SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 *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 *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 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 *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 *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 *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 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         if (priv->firmware)
1658                 kfree(priv->firmware);
1659         release_region(dev->base_addr, 32);
1660         free_netdev(dev);
1661 }
1662
1663 EXPORT_SYMBOL(stop_atmel_card);
1664
1665 static int atmel_set_essid(struct net_device *dev,
1666                            struct iw_request_info *info,
1667                            struct iw_point *dwrq,
1668                            char *extra)
1669 {
1670         struct atmel_private *priv = netdev_priv(dev);
1671
1672         /* Check if we asked for `any' */
1673         if(dwrq->flags == 0) {
1674                 priv->connect_to_any_BSS = 1;
1675         } else {
1676                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1677
1678                 priv->connect_to_any_BSS = 0;
1679
1680                 /* Check the size of the string */
1681                 if (dwrq->length > MAX_SSID_LENGTH + 1)
1682                          return -E2BIG ;
1683                 if (index != 0)
1684                         return -EINVAL;
1685
1686                 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1687                 priv->new_SSID_size = dwrq->length - 1;
1688         }
1689
1690         return -EINPROGRESS;
1691 }
1692
1693 static int atmel_get_essid(struct net_device *dev,
1694                            struct iw_request_info *info,
1695                            struct iw_point *dwrq,
1696                            char *extra)
1697 {
1698         struct atmel_private *priv = netdev_priv(dev);
1699
1700         /* Get the current SSID */
1701         if (priv->new_SSID_size != 0) {
1702                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1703                 extra[priv->new_SSID_size] = '\0';
1704                 dwrq->length = priv->new_SSID_size + 1;
1705         } else {
1706                 memcpy(extra, priv->SSID, priv->SSID_size);
1707                 extra[priv->SSID_size] = '\0';
1708                 dwrq->length = priv->SSID_size + 1;
1709         }
1710
1711         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1712
1713         return 0;
1714 }
1715
1716 static int atmel_get_wap(struct net_device *dev,
1717                          struct iw_request_info *info,
1718                          struct sockaddr *awrq,
1719                          char *extra)
1720 {
1721         struct atmel_private *priv = netdev_priv(dev);
1722         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1723         awrq->sa_family = ARPHRD_ETHER;
1724
1725         return 0;
1726 }
1727
1728 static int atmel_set_encode(struct net_device *dev,
1729                             struct iw_request_info *info,
1730                             struct iw_point *dwrq,
1731                             char *extra)
1732 {
1733         struct atmel_private *priv = netdev_priv(dev);
1734
1735         /* Basic checking: do we have a key to set ?
1736          * Note : with the new API, it's impossible to get a NULL pointer.
1737          * Therefore, we need to check a key size == 0 instead.
1738          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1739          * when no key is present (only change flags), but older versions
1740          * don't do it. - Jean II */
1741         if (dwrq->length > 0) {
1742                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1743                 int current_index = priv->default_key;
1744                 /* Check the size of the key */
1745                 if (dwrq->length > 13) {
1746                         return -EINVAL;
1747                 }
1748                 /* Check the index (none -> use current) */
1749                 if (index < 0 || index >= 4)
1750                         index = current_index;
1751                 else
1752                         priv->default_key = index;
1753                 /* Set the length */
1754                 if (dwrq->length > 5)
1755                         priv->wep_key_len[index] = 13;
1756                 else
1757                         if (dwrq->length > 0)
1758                                 priv->wep_key_len[index] = 5;
1759                         else
1760                                 /* Disable the key */
1761                                 priv->wep_key_len[index] = 0;
1762                 /* Check if the key is not marked as invalid */
1763                 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1764                         /* Cleanup */
1765                         memset(priv->wep_keys[index], 0, 13);
1766                         /* Copy the key in the driver */
1767                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1768                 }
1769                 /* WE specify that if a valid key is set, encryption
1770                  * should be enabled (user may turn it off later)
1771                  * This is also how "iwconfig ethX key on" works */
1772                 if (index == current_index &&
1773                     priv->wep_key_len[index] > 0) {
1774                         priv->wep_is_on = 1;
1775                         priv->exclude_unencrypted = 1;
1776                         if (priv->wep_key_len[index] > 5) {
1777                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1778                                 priv->encryption_level = 2;
1779                         } else {
1780                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1781                                 priv->encryption_level = 1;
1782                         }
1783                 }
1784         } else {
1785                 /* Do we want to just set the transmit key index ? */
1786                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1787                 if ( index>=0 && index < 4 ) {
1788                         priv->default_key = index;
1789                 } else
1790                         /* Don't complain if only change the mode */
1791                         if(!dwrq->flags & IW_ENCODE_MODE) {
1792                                 return -EINVAL;
1793                         }
1794         }
1795         /* Read the flags */
1796         if(dwrq->flags & IW_ENCODE_DISABLED) {
1797                 priv->wep_is_on = 0;
1798                 priv->encryption_level = 0;
1799                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1800         } else {
1801                 priv->wep_is_on = 1;
1802                 if (priv->wep_key_len[priv->default_key] > 5) {
1803                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1804                         priv->encryption_level = 2;
1805                 } else {
1806                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1807                         priv->encryption_level = 1;
1808                 }
1809         }
1810         if(dwrq->flags & IW_ENCODE_RESTRICTED)
1811                 priv->exclude_unencrypted = 1;
1812         if(dwrq->flags & IW_ENCODE_OPEN)
1813                 priv->exclude_unencrypted = 0;
1814
1815         return -EINPROGRESS;            /* Call commit handler */
1816 }
1817
1818
1819 static int atmel_get_encode(struct net_device *dev,
1820                             struct iw_request_info *info,
1821                             struct iw_point *dwrq,
1822                             char *extra)
1823 {
1824         struct atmel_private *priv = netdev_priv(dev);
1825         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1826
1827         if (!priv->wep_is_on)
1828                 dwrq->flags = IW_ENCODE_DISABLED;
1829         else {
1830                 if (priv->exclude_unencrypted)
1831                         dwrq->flags = IW_ENCODE_RESTRICTED;
1832                 else
1833                         dwrq->flags = IW_ENCODE_OPEN;
1834         }
1835                 /* Which key do we want ? -1 -> tx index */
1836         if (index < 0 || index >= 4)
1837                 index = priv->default_key;
1838         dwrq->flags |= index + 1;
1839         /* Copy the key to the user buffer */
1840         dwrq->length = priv->wep_key_len[index];
1841         if (dwrq->length > 16) {
1842                 dwrq->length=0;
1843         } else {
1844                 memset(extra, 0, 16);
1845                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1846         }
1847
1848         return 0;
1849 }
1850
1851 static int atmel_get_name(struct net_device *dev,
1852                           struct iw_request_info *info,
1853                           char *cwrq,
1854                           char *extra)
1855 {
1856         strcpy(cwrq, "IEEE 802.11-DS");
1857         return 0;
1858 }
1859
1860 static int atmel_set_rate(struct net_device *dev,
1861                           struct iw_request_info *info,
1862                           struct iw_param *vwrq,
1863                           char *extra)
1864 {
1865         struct atmel_private *priv = netdev_priv(dev);
1866
1867         if (vwrq->fixed == 0) {
1868                 priv->tx_rate = 3;
1869                 priv->auto_tx_rate = 1;
1870         } else {
1871                 priv->auto_tx_rate = 0;
1872
1873                 /* Which type of value ? */
1874                 if((vwrq->value < 4) && (vwrq->value >= 0)) {
1875                         /* Setting by rate index */
1876                 priv->tx_rate = vwrq->value;
1877                 } else {
1878                 /* Setting by frequency value */
1879                         switch (vwrq->value) {
1880                         case  1000000: priv->tx_rate = 0; break;
1881                         case  2000000: priv->tx_rate = 1; break;
1882                         case  5500000: priv->tx_rate = 2; break;
1883                         case 11000000: priv->tx_rate = 3; break;
1884                         default: return -EINVAL;
1885                         }
1886                 }
1887         }
1888
1889         return -EINPROGRESS;
1890 }
1891
1892 static int atmel_set_mode(struct net_device *dev,
1893                           struct iw_request_info *info,
1894                           __u32 *uwrq,
1895                           char *extra)
1896 {
1897         struct atmel_private *priv = netdev_priv(dev);
1898
1899         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
1900                 return -EINVAL;
1901
1902         priv->operating_mode = *uwrq;
1903         return -EINPROGRESS;
1904 }
1905
1906 static int atmel_get_mode(struct net_device *dev,
1907                           struct iw_request_info *info,
1908                           __u32 *uwrq,
1909                           char *extra)
1910 {
1911         struct atmel_private *priv = netdev_priv(dev);
1912
1913         *uwrq = priv->operating_mode;
1914         return 0;
1915 }
1916
1917 static int atmel_get_rate(struct net_device *dev,
1918                          struct iw_request_info *info,
1919                          struct iw_param *vwrq,
1920                          char *extra)
1921 {
1922         struct atmel_private *priv = netdev_priv(dev);
1923
1924         if (priv->auto_tx_rate) {
1925                 vwrq->fixed = 0;
1926                 vwrq->value = 11000000;
1927         } else {
1928                 vwrq->fixed = 1;
1929                 switch(priv->tx_rate) {
1930                 case 0: vwrq->value =  1000000; break;
1931                 case 1: vwrq->value =  2000000; break;
1932                 case 2: vwrq->value =  5500000; break;
1933                 case 3: vwrq->value = 11000000; break;
1934                 }
1935         }
1936         return 0;
1937 }
1938
1939 static int atmel_set_power(struct net_device *dev,
1940                            struct iw_request_info *info,
1941                            struct iw_param *vwrq,
1942                            char *extra)
1943 {
1944         struct atmel_private *priv = netdev_priv(dev);
1945         priv->power_mode = vwrq->disabled ? 0 : 1;
1946         return -EINPROGRESS;
1947 }
1948
1949 static int atmel_get_power(struct net_device *dev,
1950                            struct iw_request_info *info,
1951                            struct iw_param *vwrq,
1952                            char *extra)
1953 {
1954         struct atmel_private *priv = netdev_priv(dev);
1955         vwrq->disabled = priv->power_mode ? 0 : 1;
1956         vwrq->flags = IW_POWER_ON;
1957         return 0;
1958 }
1959
1960 static int atmel_set_retry(struct net_device *dev,
1961                            struct iw_request_info *info,
1962                            struct iw_param *vwrq,
1963                            char *extra)
1964 {
1965         struct atmel_private *priv = netdev_priv(dev);
1966
1967         if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
1968                 if(vwrq->flags & IW_RETRY_MAX)
1969                         priv->long_retry = vwrq->value;
1970                 else if (vwrq->flags & IW_RETRY_MIN)
1971                         priv->short_retry = vwrq->value;
1972                 else {
1973                         /* No modifier : set both */
1974                         priv->long_retry = vwrq->value;
1975                         priv->short_retry = vwrq->value;
1976                 }
1977                 return -EINPROGRESS;
1978         }
1979
1980         return -EINVAL;
1981 }
1982
1983 static int atmel_get_retry(struct net_device *dev,
1984                            struct iw_request_info *info,
1985                            struct iw_param *vwrq,
1986                            char *extra)
1987 {
1988         struct atmel_private *priv = netdev_priv(dev);
1989
1990         vwrq->disabled = 0;      /* Can't be disabled */
1991
1992         /* Note : by default, display the min retry number */
1993         if((vwrq->flags & IW_RETRY_MAX)) {
1994                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1995                 vwrq->value = priv->long_retry;
1996         } else {
1997                 vwrq->flags = IW_RETRY_LIMIT;
1998                 vwrq->value = priv->short_retry;
1999                 if(priv->long_retry != priv->short_retry)
2000                         vwrq->flags |= IW_RETRY_MIN;
2001         }
2002
2003         return 0;
2004 }
2005
2006 static int atmel_set_rts(struct net_device *dev,
2007                          struct iw_request_info *info,
2008                          struct iw_param *vwrq,
2009                          char *extra)
2010 {
2011         struct atmel_private *priv = netdev_priv(dev);
2012         int rthr = vwrq->value;
2013
2014         if(vwrq->disabled)
2015                 rthr = 2347;
2016         if((rthr < 0) || (rthr > 2347)) {
2017                 return -EINVAL;
2018         }
2019         priv->rts_threshold = rthr;
2020
2021         return -EINPROGRESS;            /* Call commit handler */
2022 }
2023
2024 static int atmel_get_rts(struct net_device *dev,
2025                          struct iw_request_info *info,
2026                          struct iw_param *vwrq,
2027                          char *extra)
2028 {
2029         struct atmel_private *priv = netdev_priv(dev);
2030
2031         vwrq->value = priv->rts_threshold;
2032         vwrq->disabled = (vwrq->value >= 2347);
2033         vwrq->fixed = 1;
2034
2035         return 0;
2036 }
2037
2038 static int atmel_set_frag(struct net_device *dev,
2039                           struct iw_request_info *info,
2040                           struct iw_param *vwrq,
2041                           char *extra)
2042 {
2043         struct atmel_private *priv = netdev_priv(dev);
2044         int fthr = vwrq->value;
2045
2046         if(vwrq->disabled)
2047                 fthr = 2346;
2048         if((fthr < 256) || (fthr > 2346)) {
2049                 return -EINVAL;
2050         }
2051         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2052         priv->frag_threshold = fthr;
2053
2054         return -EINPROGRESS;            /* Call commit handler */
2055 }
2056
2057 static int atmel_get_frag(struct net_device *dev,
2058                           struct iw_request_info *info,
2059                           struct iw_param *vwrq,
2060                           char *extra)
2061 {
2062         struct atmel_private *priv = netdev_priv(dev);
2063
2064         vwrq->value = priv->frag_threshold;
2065         vwrq->disabled = (vwrq->value >= 2346);
2066         vwrq->fixed = 1;
2067
2068         return 0;
2069 }
2070
2071 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2072                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2073
2074 static int atmel_set_freq(struct net_device *dev,
2075                           struct iw_request_info *info,
2076                           struct iw_freq *fwrq,
2077                           char *extra)
2078 {
2079         struct atmel_private *priv = netdev_priv(dev);
2080         int rc = -EINPROGRESS;          /* Call commit handler */
2081
2082         /* If setting by frequency, convert to a channel */
2083         if((fwrq->e == 1) &&
2084            (fwrq->m >= (int) 241200000) &&
2085            (fwrq->m <= (int) 248700000)) {
2086                 int f = fwrq->m / 100000;
2087                 int c = 0;
2088                 while((c < 14) && (f != frequency_list[c]))
2089                         c++;
2090                 /* Hack to fall through... */
2091                 fwrq->e = 0;
2092                 fwrq->m = c + 1;
2093         }
2094         /* Setting by channel number */
2095         if((fwrq->m > 1000) || (fwrq->e > 0))
2096                 rc = -EOPNOTSUPP;
2097         else {
2098                 int channel = fwrq->m;
2099                 if (atmel_validate_channel(priv, channel) == 0) {
2100                         priv->channel = channel;
2101                 } else {
2102                         rc = -EINVAL;
2103                 }
2104         }
2105         return rc;
2106 }
2107
2108 static int atmel_get_freq(struct net_device *dev,
2109                           struct iw_request_info *info,
2110                           struct iw_freq *fwrq,
2111                           char *extra)
2112 {
2113         struct atmel_private *priv = netdev_priv(dev);
2114
2115         fwrq->m = priv->channel;
2116         fwrq->e = 0;
2117         return 0;
2118 }
2119
2120 static int atmel_set_scan(struct net_device *dev,
2121                           struct iw_request_info *info,
2122                           struct iw_param *vwrq,
2123                           char *extra)
2124 {
2125         struct atmel_private *priv = netdev_priv(dev);
2126         unsigned long flags;
2127
2128         /* Note : you may have realised that, as this is a SET operation,
2129          * this is privileged and therefore a normal user can't
2130          * perform scanning.
2131          * This is not an error, while the device perform scanning,
2132          * traffic doesn't flow, so it's a perfect DoS...
2133          * Jean II */
2134
2135         if (priv->station_state == STATION_STATE_DOWN)
2136                 return -EAGAIN;
2137
2138         /* Timeout old surveys. */
2139         if ((jiffies - priv->last_survey) > (20 * HZ))
2140                 priv->site_survey_state = SITE_SURVEY_IDLE;
2141         priv->last_survey = jiffies;
2142
2143         /* Initiate a scan command */
2144         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2145                 return -EBUSY;
2146
2147         del_timer_sync(&priv->management_timer);
2148         spin_lock_irqsave(&priv->irqlock, flags);
2149
2150         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2151         priv->fast_scan = 0;
2152         atmel_scan(priv, 0);
2153         spin_unlock_irqrestore(&priv->irqlock, flags);
2154
2155         return 0;
2156 }
2157
2158 static int atmel_get_scan(struct net_device *dev,
2159                           struct iw_request_info *info,
2160                           struct iw_point *dwrq,
2161                           char *extra)
2162 {
2163         struct atmel_private *priv = netdev_priv(dev);
2164         int i;
2165         char *current_ev = extra;
2166         struct iw_event iwe;
2167
2168         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2169                 return -EAGAIN;
2170
2171         for(i=0; i<priv->BSS_list_entries; i++) {
2172                 iwe.cmd = SIOCGIWAP;
2173                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2174                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2175                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2176
2177                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2178                 if (iwe.u.data.length > 32)
2179                         iwe.u.data.length = 32;
2180                 iwe.cmd = SIOCGIWESSID;
2181                 iwe.u.data.flags = 1;
2182                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2183
2184                 iwe.cmd = SIOCGIWMODE;
2185                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2186                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2187
2188                 iwe.cmd = SIOCGIWFREQ;
2189                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2190                 iwe.u.freq.e = 0;
2191                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2192
2193                 iwe.cmd = SIOCGIWENCODE;
2194                 if (priv->BSSinfo[i].UsingWEP)
2195                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2196                 else
2197                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2198                 iwe.u.data.length = 0;
2199                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2200
2201         }
2202
2203         /* Length of data */
2204         dwrq->length = (current_ev - extra);
2205         dwrq->flags = 0;
2206
2207         return 0;
2208 }
2209
2210 static int atmel_get_range(struct net_device *dev,
2211                            struct iw_request_info *info,
2212                            struct iw_point *dwrq,
2213                            char *extra)
2214 {
2215         struct atmel_private *priv = netdev_priv(dev);
2216         struct iw_range *range = (struct iw_range *) extra;
2217         int k,i,j;
2218
2219         dwrq->length = sizeof(struct iw_range);
2220         memset(range, 0, sizeof(range));
2221         range->min_nwid = 0x0000;
2222         range->max_nwid = 0x0000;
2223         range->num_channels = 0;
2224         for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2225                 if (priv->reg_domain == channel_table[j].reg_domain) {
2226                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2227                         break;
2228                 }
2229         if (range->num_channels != 0) {
2230                 for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2231                         range->freq[k].i = i; /* List index */
2232                         range->freq[k].m = frequency_list[i-1] * 100000;
2233                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2234                 }
2235                 range->num_frequency = k;
2236         }
2237
2238         range->max_qual.qual = 100;
2239         range->max_qual.level = 100;
2240         range->max_qual.noise = 0;
2241         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2242
2243         range->avg_qual.qual = 50;
2244         range->avg_qual.level = 50;
2245         range->avg_qual.noise = 0;
2246         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2247
2248         range->sensitivity = 0;
2249
2250         range->bitrate[0] =  1000000;
2251         range->bitrate[1] =  2000000;
2252         range->bitrate[2] =  5500000;
2253         range->bitrate[3] = 11000000;
2254         range->num_bitrates = 4;
2255
2256         range->min_rts = 0;
2257         range->max_rts = 2347;
2258         range->min_frag = 256;
2259         range->max_frag = 2346;
2260
2261         range->encoding_size[0] = 5;
2262         range->encoding_size[1] = 13;
2263         range->num_encoding_sizes = 2;
2264         range->max_encoding_tokens = 4;
2265
2266         range->pmp_flags = IW_POWER_ON;
2267         range->pmt_flags = IW_POWER_ON;
2268         range->pm_capa = 0;
2269
2270         range->we_version_source = WIRELESS_EXT;
2271         range->we_version_compiled = WIRELESS_EXT;
2272         range->retry_capa = IW_RETRY_LIMIT ;
2273         range->retry_flags = IW_RETRY_LIMIT;
2274         range->r_time_flags = 0;
2275         range->min_retry = 1;
2276         range->max_retry = 65535;
2277
2278         return 0;
2279 }
2280
2281 static int atmel_set_wap(struct net_device *dev,
2282                          struct iw_request_info *info,
2283                          struct sockaddr *awrq,
2284                          char *extra)
2285 {
2286         struct atmel_private *priv = netdev_priv(dev);
2287         int i;
2288         static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
2289         unsigned long flags;
2290
2291         if (awrq->sa_family != ARPHRD_ETHER)
2292                 return -EINVAL;
2293
2294         if (memcmp(bcast, awrq->sa_data, 6) == 0) {
2295                 del_timer_sync(&priv->management_timer);
2296                 spin_lock_irqsave(&priv->irqlock, flags);
2297                 atmel_scan(priv, 1);
2298                 spin_unlock_irqrestore(&priv->irqlock, flags);
2299                 return 0;
2300         }
2301
2302         for(i=0; i<priv->BSS_list_entries; i++) {
2303                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2304                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2305                                 return -EINVAL;
2306                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2307                                 return -EINVAL;
2308                         } else {
2309                                 del_timer_sync(&priv->management_timer);
2310                                 spin_lock_irqsave(&priv->irqlock, flags);
2311                                 atmel_join_bss(priv, i);
2312                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2313                                 return 0;
2314                         }
2315                 }
2316         }
2317
2318         return -EINVAL;
2319 }
2320
2321 static int atmel_config_commit(struct net_device *dev,
2322                                struct iw_request_info *info,    /* NULL */
2323                                void *zwrq,                      /* NULL */
2324                                char *extra)                     /* NULL */
2325 {
2326         return atmel_open(dev);
2327 }
2328
2329 static const iw_handler         atmel_handler[] =
2330 {
2331         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2332         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2333         (iw_handler) NULL,                      /* SIOCSIWNWID */
2334         (iw_handler) NULL,                      /* SIOCGIWNWID */
2335         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2336         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2337         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2338         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2339         (iw_handler) NULL,                      /* SIOCSIWSENS */
2340         (iw_handler) NULL,                      /* SIOCGIWSENS */
2341         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2342         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2343         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2344         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2345         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2346         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2347         (iw_handler) NULL,                      /* SIOCSIWSPY */
2348         (iw_handler) NULL,                      /* SIOCGIWSPY */
2349         (iw_handler) NULL,                      /* -- hole -- */
2350         (iw_handler) NULL,                      /* -- hole -- */
2351         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2352         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2353         (iw_handler) NULL,                      /* -- hole -- */
2354         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2355         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2356         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2357         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2358         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2359         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2360         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2361         (iw_handler) NULL,                      /* -- hole -- */
2362         (iw_handler) NULL,                      /* -- hole -- */
2363         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2364         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2365         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2366         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2367         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2368         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2369         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2370         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2371         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2372         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2373         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2374         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2375         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2376         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2377 };
2378
2379
2380 static const iw_handler         atmel_private_handler[] =
2381 {
2382         NULL,                           /* SIOCIWFIRSTPRIV */
2383 };
2384
2385 typedef struct atmel_priv_ioctl {
2386         char id[32];
2387         unsigned char __user *data;
2388         unsigned short len;
2389 } atmel_priv_ioctl;
2390
2391
2392 #define ATMELFWL SIOCIWFIRSTPRIV
2393 #define ATMELIDIFC ATMELFWL + 1
2394 #define ATMELRD ATMELFWL + 2
2395 #define ATMELMAGIC 0x51807
2396 #define REGDOMAINSZ 20
2397
2398 static const struct iw_priv_args atmel_private_args[] = {
2399 /*{ cmd,         set_args,                            get_args, name } */
2400   { ATMELFWL, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof (atmel_priv_ioctl), IW_PRIV_TYPE_NONE, "atmelfwl" },
2401   { ATMELIDIFC, IW_PRIV_TYPE_NONE, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "atmelidifc" },
2402   { ATMELRD, IW_PRIV_TYPE_CHAR | REGDOMAINSZ, IW_PRIV_TYPE_NONE, "regdomain" },
2403 };
2404
2405 static const struct iw_handler_def      atmel_handler_def =
2406 {
2407         .num_standard   = sizeof(atmel_handler)/sizeof(iw_handler),
2408         .num_private    = sizeof(atmel_private_handler)/sizeof(iw_handler),
2409         .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
2410         .standard       = (iw_handler *) atmel_handler,
2411         .private        = (iw_handler *) atmel_private_handler,
2412         .private_args   = (struct iw_priv_args *) atmel_private_args,
2413         .get_wireless_stats = atmel_get_wireless_stats
2414 };
2415
2416 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2417 {
2418         int i, rc = 0;
2419         struct atmel_private *priv = netdev_priv(dev);
2420         atmel_priv_ioctl com;
2421         struct iwreq *wrq = (struct iwreq *) rq;
2422         unsigned char *new_firmware;
2423         char domain[REGDOMAINSZ+1];
2424
2425         switch (cmd) {
2426         case ATMELIDIFC:
2427                 wrq->u.param.value = ATMELMAGIC;
2428                 break;
2429
2430         case ATMELFWL:
2431                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2432                         rc = -EFAULT;
2433                         break;
2434                 }
2435
2436                 if (!capable(CAP_NET_ADMIN)) {
2437                         rc = -EPERM;
2438                         break;
2439                 }
2440
2441                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2442                         rc = -ENOMEM;
2443                         break;
2444                 }
2445
2446                 if (copy_from_user(new_firmware, com.data, com.len)) {
2447                         kfree(new_firmware);
2448                         rc = -EFAULT;
2449                         break;
2450                 }
2451
2452                 if (priv->firmware)
2453                         kfree(priv->firmware);
2454
2455                 priv->firmware = new_firmware;
2456                 priv->firmware_length = com.len;
2457                 strncpy(priv->firmware_id, com.id, 31);
2458                 priv->firmware_id[31] = '\0';
2459                 break;
2460
2461         case ATMELRD:
2462                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2463                         rc = -EFAULT;
2464                         break;
2465                 }
2466
2467                 if (!capable(CAP_NET_ADMIN)) {
2468                         rc = -EPERM;
2469                         break;
2470                 }
2471
2472                 domain[REGDOMAINSZ] = 0;
2473                 rc = -EINVAL;
2474                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2475                         /* strcasecmp doesn't exist in the library */
2476                         char *a = channel_table[i].name;
2477                         char *b = domain;
2478                         while (*a) {
2479                                 char c1 = *a++;
2480                                 char c2 = *b++;
2481                                 if (tolower(c1) != tolower(c2))
2482                                         break;
2483                         }
2484                         if (!*a && !*b) {
2485                                 priv->config_reg_domain = channel_table[i].reg_domain;
2486                                 rc = 0;
2487                         }
2488                 }
2489
2490                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2491                         rc = atmel_open(dev);
2492                 break;
2493
2494         default:
2495                 rc = -EOPNOTSUPP;
2496         }
2497
2498         return rc;
2499 }
2500
2501 struct auth_body {
2502         u16 alg;
2503         u16 trans_seq;
2504         u16 status;
2505         u8 el_id;
2506         u8 chall_text_len;
2507         u8 chall_text[253];
2508 };
2509
2510 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2511 {
2512         int old_state = priv->station_state;
2513
2514         if (new_state == old_state)
2515                 return;
2516
2517         priv->station_state = new_state;
2518
2519         if (new_state == STATION_STATE_READY) {
2520                 netif_start_queue(priv->dev);
2521                 netif_carrier_on(priv->dev);
2522         }
2523
2524         if (old_state == STATION_STATE_READY) {
2525                 netif_carrier_off(priv->dev);
2526                 if (netif_running(priv->dev))
2527                         netif_stop_queue(priv->dev);
2528                 priv->last_beacon_timestamp = 0;
2529         }
2530 }
2531
2532 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2533 {
2534         struct {
2535                 u8 BSSID[6];
2536                 u8 SSID[MAX_SSID_LENGTH];
2537                 u8 scan_type;
2538                 u8 channel;
2539                 u16 BSS_type;
2540                 u16 min_channel_time;
2541                 u16 max_channel_time;
2542                 u8 options;
2543                 u8 SSID_size;
2544         } cmd;
2545
2546         memset(cmd.BSSID, 0xff, 6);
2547
2548         if (priv->fast_scan) {
2549                 cmd.SSID_size = priv->SSID_size;
2550                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2551                 cmd.min_channel_time = cpu_to_le16(10);
2552                 cmd.max_channel_time = cpu_to_le16(50);
2553         } else {
2554                 priv->BSS_list_entries = 0;
2555                 cmd.SSID_size = 0;
2556                 cmd.min_channel_time = cpu_to_le16(10);
2557                 cmd.max_channel_time = cpu_to_le16(120);
2558         }
2559
2560         cmd.options = 0;
2561
2562         if (!specific_ssid)
2563                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2564
2565         cmd.channel = (priv->channel & 0x7f);
2566         cmd.scan_type = SCAN_TYPE_ACTIVE;
2567         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2568                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2569
2570         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2571
2572         /* This must come after all hardware access to avoid being messed up
2573            by stuff happening in interrupt context after we leave STATE_DOWN */
2574         atmel_enter_state(priv, STATION_STATE_SCANNING);
2575 }
2576
2577 static void join(struct atmel_private *priv, int type)
2578 {
2579         struct {
2580                 u8 BSSID[6];
2581                 u8 SSID[MAX_SSID_LENGTH];
2582                 u8 BSS_type; /* this is a short in a scan command - weird */
2583                 u8 channel;
2584                 u16 timeout;
2585                 u8 SSID_size;
2586                 u8 reserved;
2587         } cmd;
2588
2589         cmd.SSID_size = priv->SSID_size;
2590         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2591         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2592         cmd.channel = (priv->channel & 0x7f);
2593         cmd.BSS_type = type;
2594         cmd.timeout = cpu_to_le16(2000);
2595
2596         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2597 }
2598
2599
2600 static void start(struct atmel_private *priv, int type)
2601 {
2602         struct {
2603                 u8 BSSID[6];
2604                 u8 SSID[MAX_SSID_LENGTH];
2605                 u8 BSS_type;
2606                 u8 channel;
2607                 u8 SSID_size;
2608                 u8 reserved[3];
2609         } cmd;
2610
2611         cmd.SSID_size = priv->SSID_size;
2612         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2613         memcpy(cmd.BSSID, priv->BSSID, 6);
2614         cmd.BSS_type = type;
2615         cmd.channel = (priv->channel & 0x7f);
2616
2617         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2618 }
2619
2620 static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 channel)
2621 {
2622         int rejoin = 0;
2623         int new = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ?
2624                 SHORT_PREAMBLE : LONG_PREAMBLE;
2625
2626         if (priv->preamble != new) {
2627                 priv->preamble = new;
2628                 rejoin = 1;
2629                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2630         }
2631
2632         if (priv->channel != channel) {
2633                 priv->channel = channel;
2634                 rejoin = 1;
2635                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2636         }
2637
2638         if (rejoin) {
2639                 priv->station_is_associated = 0;
2640                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2641
2642                 if (priv->operating_mode == IW_MODE_INFRA)
2643                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2644                 else
2645                         join(priv, BSS_TYPE_AD_HOC);
2646         }
2647 }
2648
2649
2650 static void send_authentication_request(struct atmel_private *priv, u16 system, u8 *challenge, int challenge_len)
2651 {
2652         struct ieee80211_hdr header;
2653         struct auth_body auth;
2654
2655         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2656         header.duration_id      = cpu_to_le16(0x8000);
2657         header.seq_ctl = 0;
2658         memcpy(header.addr1, priv->CurrentBSSID, 6);
2659         memcpy(header.addr2, priv->dev->dev_addr, 6);
2660         memcpy(header.addr3, priv->CurrentBSSID, 6);
2661
2662         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2663                 /* no WEP for authentication frames with TrSeqNo 1 */
2664                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2665
2666         auth.alg = cpu_to_le16(system);
2667
2668         auth.status = 0;
2669         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2670         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2671         priv->CurrentAuthentTransactionSeqNum += 2;
2672
2673         if (challenge_len != 0) {
2674                 auth.el_id = 16; /* challenge_text */
2675                 auth.chall_text_len = challenge_len;
2676                 memcpy(auth.chall_text, challenge, challenge_len);
2677                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2678         } else {
2679                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2680         }
2681 }
2682
2683 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2684 {
2685         u8 *ssid_el_p;
2686         int bodysize;
2687         struct ieee80211_hdr header;
2688         struct ass_req_format {
2689                 u16 capability;
2690                 u16 listen_interval;
2691                 u8 ap[6]; /* nothing after here directly accessible */
2692                 u8 ssid_el_id;
2693                 u8 ssid_len;
2694                 u8 ssid[MAX_SSID_LENGTH];
2695                 u8 sup_rates_el_id;
2696                 u8 sup_rates_len;
2697                 u8 rates[4];
2698         } body;
2699
2700         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2701                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2702         header.duration_id = cpu_to_le16(0x8000);
2703         header.seq_ctl = 0;
2704
2705         memcpy(header.addr1, priv->CurrentBSSID, 6);
2706         memcpy(header.addr2, priv->dev->dev_addr, 6);
2707         memcpy(header.addr3, priv->CurrentBSSID, 6);
2708
2709         body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
2710         if (priv->wep_is_on)
2711                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
2712         if (priv->preamble == SHORT_PREAMBLE)
2713                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
2714
2715         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2716
2717         /* current AP address - only in reassoc frame */
2718         if (is_reassoc) {
2719                 memcpy(body.ap,  priv->CurrentBSSID, 6);
2720                 ssid_el_p = (u8 *)&body.ssid_el_id;
2721                 bodysize = 18 + priv->SSID_size;
2722         } else {
2723                 ssid_el_p = (u8 *)&body.ap[0];
2724                 bodysize = 12 + priv->SSID_size;
2725         }
2726
2727         ssid_el_p[0]= C80211_MGMT_ElementID_SSID;
2728         ssid_el_p[1] = priv->SSID_size;
2729         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2730         ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
2731         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2732         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2733
2734         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2735 }
2736
2737 static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee80211_hdr *header)
2738 {
2739         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2740                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2741         else
2742                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2743 }
2744
2745 static int retrieve_bss(struct atmel_private *priv)
2746 {
2747         int i;
2748         int max_rssi = -128;
2749         int max_index = -1;
2750
2751         if (priv->BSS_list_entries == 0)
2752                 return -1;
2753
2754         if (priv->connect_to_any_BSS) {
2755                 /* Select a BSS with the max-RSSI but of the same type and of the same WEP mode
2756                    and that it is not marked as 'bad' (i.e. we had previously failed to connect to
2757                    this BSS with the settings that we currently use) */
2758                 priv->current_BSS = 0;
2759                 for(i=0; i<priv->BSS_list_entries; i++) {
2760                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2761                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2762                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2763                             !(priv->BSSinfo[i].channel & 0x80)) {
2764                                 max_rssi = priv->BSSinfo[i].RSSI;
2765                                 priv->current_BSS = max_index = i;
2766                         }
2767
2768                 }
2769                 return max_index;
2770         }
2771
2772         for(i=0; i<priv->BSS_list_entries; i++) {
2773                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2774                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2775                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2776                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2777                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2778                                 max_rssi = priv->BSSinfo[i].RSSI;
2779                                 max_index = i;
2780                         }
2781                 }
2782         }
2783         return max_index;
2784 }
2785
2786
2787 static void store_bss_info(struct atmel_private *priv, struct ieee80211_hdr *header,
2788                            u16 capability, u16 beacon_period, u8 channel, u8 rssi,
2789                            u8 ssid_len, u8 *ssid, int is_beacon)
2790 {
2791         u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
2792         int i, index;
2793
2794         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2795                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2796                         index = i;
2797
2798         /* If we process a probe and an entry from this BSS exists
2799            we will update the BSS entry with the info from this BSS.
2800            If we process a beacon we will only update RSSI */
2801
2802         if (index == -1) {
2803                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2804                         return;
2805                 index = priv->BSS_list_entries++;
2806                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2807                 priv->BSSinfo[index].RSSI = rssi;
2808         } else {
2809                 if (rssi > priv->BSSinfo[index].RSSI)
2810                         priv->BSSinfo[index].RSSI = rssi;
2811                 if (is_beacon)
2812                         return;
2813         }
2814
2815         priv->BSSinfo[index].channel = channel;
2816         priv->BSSinfo[index].beacon_period = beacon_period;
2817         priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
2818         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2819         priv->BSSinfo[index].SSIDsize = ssid_len;
2820
2821         if (capability & C80211_MGMT_CAPABILITY_IBSS)
2822                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
2823         else if (capability & C80211_MGMT_CAPABILITY_ESS)
2824                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
2825
2826         priv->BSSinfo[index].preamble = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ?
2827                 SHORT_PREAMBLE : LONG_PREAMBLE;
2828 }
2829
2830 static void authenticate(struct atmel_private *priv, u16 frame_len)
2831 {
2832         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
2833         u16 status = le16_to_cpu(auth->status);
2834         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
2835         u16 system = le16_to_cpu(auth->alg);
2836
2837         if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) {
2838                 /* no WEP */
2839                 if (priv->station_was_associated) {
2840                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2841                         send_association_request(priv, 1);
2842                         return;
2843                 } else {
2844                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2845                         send_association_request(priv, 0);
2846                         return;
2847                 }
2848         }
2849
2850         if (status == C80211_MGMT_SC_Success && priv->wep_is_on) {
2851                 /* WEP */
2852                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
2853                         return;
2854
2855                 if (trans_seq_no == 0x0002 &&
2856                     auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
2857                         send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
2858                         return;
2859                 }
2860
2861                 if (trans_seq_no == 0x0004) {
2862                         if(priv->station_was_associated) {
2863                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2864                                 send_association_request(priv, 1);
2865                                 return;
2866                         } else {
2867                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2868                                 send_association_request(priv, 0);
2869                                 return;
2870                         }
2871                 }
2872         }
2873
2874         if (status == C80211_MGMT_SC_AuthAlgNotSupported) {
2875                 /* Do opensystem first, then try sharedkey */
2876                 if (system ==  C80211_MGMT_AAN_OPENSYSTEM) {
2877                         priv->CurrentAuthentTransactionSeqNum = 0x001;
2878                         send_authentication_request(priv, C80211_MGMT_AAN_SHAREDKEY, NULL, 0);
2879                 } else if (priv->connect_to_any_BSS) {
2880                         int bss_index;
2881
2882                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2883
2884                         if ((bss_index  = retrieve_bss(priv)) != -1) {
2885                                 atmel_join_bss(priv, bss_index);
2886                                 return;
2887                         }
2888                 }
2889         }
2890
2891
2892         priv->AuthenticationRequestRetryCnt = 0;
2893         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2894         priv->station_is_associated = 0;
2895 }
2896
2897 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
2898 {
2899         struct ass_resp_format {
2900                 u16 capability;
2901                 u16 status;
2902                 u16 ass_id;
2903                 u8 el_id;
2904                 u8 length;
2905                 u8 rates[4];
2906         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
2907
2908         u16 status = le16_to_cpu(ass_resp->status);
2909         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
2910         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
2911
2912         if (frame_len < 8 + rates_len)
2913                 return;
2914
2915         if (status == C80211_MGMT_SC_Success) {
2916                 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
2917                         priv->AssociationRequestRetryCnt = 0;
2918                 else
2919                         priv->ReAssociationRequestRetryCnt = 0;
2920
2921                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
2922                 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
2923                 if (priv->power_mode == 0) {
2924                         priv->listen_interval = 1;
2925                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2926                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2927                 } else {
2928                         priv->listen_interval = 2;
2929                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
2930                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
2931                 }
2932
2933                 priv->station_is_associated = 1;
2934                 priv->station_was_associated = 1;
2935                 atmel_enter_state(priv, STATION_STATE_READY);
2936                 return;
2937         }
2938
2939         if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
2940             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2941             status != C80211_MGMT_SC_SupportCapabilities &&
2942             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2943                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2944                 priv->AssociationRequestRetryCnt++;
2945                 send_association_request(priv, 0);
2946                 return;
2947         }
2948
2949         if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
2950             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2951             status != C80211_MGMT_SC_SupportCapabilities &&
2952             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2953                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2954                 priv->ReAssociationRequestRetryCnt++;
2955                 send_association_request(priv, 1);
2956                 return;
2957         }
2958
2959         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2960         priv->station_is_associated = 0;
2961
2962         if(priv->connect_to_any_BSS) {
2963                 int bss_index;
2964                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2965
2966                 if ((bss_index = retrieve_bss(priv)) != -1)
2967                         atmel_join_bss(priv, bss_index);
2968
2969         }
2970 }
2971
2972 void atmel_join_bss(struct atmel_private *priv, int bss_index)
2973 {
2974         struct bss_info *bss =  &priv->BSSinfo[bss_index];
2975
2976         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
2977         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
2978
2979         /* The WPA stuff cares about the current AP address */
2980         if (priv->use_wpa)
2981                 build_wpa_mib(priv);
2982
2983         /* When switching to AdHoc turn OFF Power Save if needed */
2984
2985         if (bss->BSStype == IW_MODE_ADHOC &&
2986             priv->operating_mode != IW_MODE_ADHOC &&
2987             priv->power_mode) {
2988                 priv->power_mode = 0;
2989                 priv->listen_interval = 1;
2990                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2991                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2992         }
2993
2994         priv->operating_mode = bss->BSStype;
2995         priv->channel = bss->channel & 0x7f;
2996         priv->beacon_period = bss->beacon_period;
2997
2998         if (priv->preamble != bss->preamble) {
2999                 priv->preamble = bss->preamble;
3000                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3001         }
3002
3003         if (!priv->wep_is_on && bss->UsingWEP) {
3004                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3005                 priv->station_is_associated = 0;
3006                 return;
3007         }
3008
3009         if (priv->wep_is_on && !bss->UsingWEP) {
3010                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3011                 priv->station_is_associated = 0;
3012                 return;
3013         }
3014
3015         atmel_enter_state(priv, STATION_STATE_JOINNING);
3016
3017         if (priv->operating_mode == IW_MODE_INFRA)
3018                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3019         else
3020                 join(priv, BSS_TYPE_AD_HOC);
3021 }
3022
3023
3024 static void restart_search(struct atmel_private *priv)
3025 {
3026         int bss_index;
3027
3028         if (!priv->connect_to_any_BSS) {
3029                 atmel_scan(priv, 1);
3030         } else {
3031                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3032
3033                 if ((bss_index = retrieve_bss(priv)) != -1)
3034                         atmel_join_bss(priv, bss_index);
3035                 else
3036                         atmel_scan(priv, 0);
3037
3038         }
3039 }
3040
3041 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3042 {
3043         u8 old = priv->wstats.qual.level;
3044         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3045
3046         switch (priv->firmware_type) {
3047                 case ATMEL_FW_TYPE_502E:
3048                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3049                         break;
3050                 default:
3051                         break;
3052         }
3053
3054         rssi = rssi * 100 / max_rssi;
3055         if((rssi + old) % 2)
3056                 priv->wstats.qual.level =  ((rssi + old)/2) + 1;
3057         else
3058                 priv->wstats.qual.level =  ((rssi + old)/2);
3059         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3060         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3061 }
3062
3063 static void atmel_smooth_qual(struct atmel_private *priv)
3064 {
3065         unsigned long time_diff = (jiffies - priv->last_qual)/HZ;
3066         while (time_diff--) {
3067                 priv->last_qual += HZ;
3068                 priv->wstats.qual.qual = priv->wstats.qual.qual/2;
3069                 priv->wstats.qual.qual +=
3070                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3071                 priv->beacons_this_sec = 0;
3072         }
3073         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3074         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3075 }
3076
3077 /* deals with incoming managment frames. */
3078 static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
3079                       u16 frame_len, u8 rssi)
3080 {
3081         u16 subtype;
3082
3083         switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE) {
3084         case C80211_SUBTYPE_MGMT_BEACON :
3085         case C80211_SUBTYPE_MGMT_ProbeResponse:
3086
3087                 /* beacon frame has multiple variable-length fields -
3088                    never let an engineer loose with a data structure design. */
3089                 {
3090                         struct beacon_format {
3091                                 u64 timestamp;
3092                                 u16 interval;
3093                                 u16 capability;
3094                                 u8 ssid_el_id;
3095                                 u8 ssid_length;
3096                                 /* ssid here */
3097                                 u8 rates_el_id;
3098                                 u8 rates_length;
3099                                 /* rates here */
3100                                 u8 ds_el_id;
3101                                 u8 ds_length;
3102                                 /* ds here */
3103                         } *beacon = (struct beacon_format *)priv->rx_buf;
3104
3105                         u8 channel, rates_length, ssid_length;
3106                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3107                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3108                         u16 capability = le16_to_cpu(beacon->capability);
3109                         u8 *beaconp = priv->rx_buf;
3110                         ssid_length = beacon->ssid_length;
3111                         /* this blows chunks. */
3112                         if (frame_len < 14 || frame_len < ssid_length + 15)
3113                                 return;
3114                         rates_length = beaconp[beacon->ssid_length + 15];
3115                         if (frame_len < ssid_length + rates_length + 18)
3116                                 return;
3117                         if (ssid_length >  MAX_SSID_LENGTH)
3118                                 return;
3119                         channel = beaconp[ssid_length + rates_length + 18];
3120
3121                         if (priv->station_state == STATION_STATE_READY) {
3122                                 smooth_rssi(priv, rssi);
3123                                 if (is_frame_from_current_bss(priv, header)) {
3124                                         priv->beacons_this_sec++;
3125                                         atmel_smooth_qual(priv);
3126                                         if (priv->last_beacon_timestamp) {
3127                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3128                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3129                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3130                                                 if (beacons > 1)
3131                                                         priv->wstats.miss.beacon += beacons - 1;
3132                                         }
3133                                         priv->last_beacon_timestamp = timestamp;
3134                                         handle_beacon_probe(priv, capability, channel);
3135                                 }
3136                         }
3137
3138                         if (priv->station_state == STATION_STATE_SCANNING )
3139                                 store_bss_info(priv, header, capability, beacon_interval, channel,
3140                                                rssi, ssid_length, &beacon->rates_el_id,
3141                                                subtype == C80211_SUBTYPE_MGMT_BEACON) ;
3142                 }
3143                 break;
3144
3145         case C80211_SUBTYPE_MGMT_Authentication:
3146
3147                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3148                         authenticate(priv, frame_len);
3149
3150                 break;
3151
3152         case C80211_SUBTYPE_MGMT_ASS_RESPONSE:
3153         case C80211_SUBTYPE_MGMT_REASS_RESPONSE:
3154
3155                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3156                     priv->station_state == STATION_STATE_REASSOCIATING)
3157                         associate(priv, frame_len, subtype);
3158
3159                 break;
3160
3161         case C80211_SUBTYPE_MGMT_DISASSOSIATION:
3162                 if (priv->station_is_associated &&
3163                     priv->operating_mode == IW_MODE_INFRA &&
3164                     is_frame_from_current_bss(priv, header)) {
3165                         priv->station_was_associated = 0;
3166                         priv->station_is_associated = 0;
3167
3168                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3169                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3170                 }
3171
3172                 break;
3173
3174         case C80211_SUBTYPE_MGMT_Deauthentication:
3175                 if (priv->operating_mode == IW_MODE_INFRA &&
3176                     is_frame_from_current_bss(priv, header)) {
3177                         priv->station_was_associated = 0;
3178
3179                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3180                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3181                 }
3182
3183                 break;
3184         }
3185 }
3186
3187 /* run when timer expires */
3188 static void atmel_management_timer(u_long a)
3189 {
3190   struct net_device *dev = (struct net_device *) a;
3191   struct atmel_private *priv = netdev_priv(dev);
3192   unsigned long flags;
3193
3194   /* Check if the card has been yanked. */
3195   if (priv->card && priv->present_callback &&
3196       !(*priv->present_callback)(priv->card))
3197           return;
3198
3199   spin_lock_irqsave(&priv->irqlock, flags);
3200
3201   switch (priv->station_state) {
3202
3203   case STATION_STATE_AUTHENTICATING:
3204           if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3205                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3206                   priv->station_is_associated = 0;
3207                   priv->AuthenticationRequestRetryCnt = 0;
3208                   restart_search(priv);
3209           } else {
3210                   priv->AuthenticationRequestRetryCnt++;
3211                   priv->CurrentAuthentTransactionSeqNum = 0x0001;
3212                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3213                   send_authentication_request(priv, C80211_MGMT_AAN_OPENSYSTEM, NULL, 0);
3214           }
3215
3216           break;
3217
3218   case STATION_STATE_ASSOCIATING:
3219           if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3220                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3221                   priv->station_is_associated = 0;
3222                   priv->AssociationRequestRetryCnt = 0;
3223                   restart_search(priv);
3224           } else {
3225                   priv->AssociationRequestRetryCnt++;
3226                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3227                   send_association_request(priv, 0);
3228           }
3229
3230           break;
3231
3232   case STATION_STATE_REASSOCIATING:
3233           if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3234                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3235                   priv->station_is_associated = 0;
3236                   priv->ReAssociationRequestRetryCnt = 0;
3237                   restart_search(priv);
3238           } else {
3239                   priv->ReAssociationRequestRetryCnt++;
3240                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3241                   send_association_request(priv, 1);
3242           }
3243
3244           break;
3245
3246   default:
3247           break;
3248   }
3249
3250   spin_unlock_irqrestore(&priv->irqlock, flags);
3251 }
3252
3253 static void atmel_command_irq(struct atmel_private *priv)
3254 {
3255         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3256         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3257         int fast_scan;
3258
3259         if (status == CMD_STATUS_IDLE ||
3260             status == CMD_STATUS_IN_PROGRESS)
3261                 return;
3262
3263         switch (command){
3264
3265         case CMD_Start:
3266                 if (status == CMD_STATUS_COMPLETE) {
3267                         priv->station_was_associated = priv->station_is_associated;
3268                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3269                                       (u8 *)priv->CurrentBSSID, 6);
3270                         atmel_enter_state(priv, STATION_STATE_READY);
3271                 }
3272                 break;
3273
3274         case CMD_Scan:
3275                 fast_scan = priv->fast_scan;
3276                 priv->fast_scan = 0;
3277
3278                 if (status != CMD_STATUS_COMPLETE) {
3279                         atmel_scan(priv, 1);
3280                 } else {
3281                         int bss_index = retrieve_bss(priv);
3282                         if (bss_index != -1) {
3283                                 atmel_join_bss(priv, bss_index);
3284                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3285                                    priv->SSID_size != 0) {
3286                                 start(priv, BSS_TYPE_AD_HOC);
3287                         } else {
3288                                 priv->fast_scan = !fast_scan;
3289                                 atmel_scan(priv, 1);
3290                         }
3291                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3292                 }
3293                 break;
3294
3295         case CMD_SiteSurvey:
3296                 priv->fast_scan = 0;
3297
3298                 if (status != CMD_STATUS_COMPLETE)
3299                         return;
3300
3301                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3302                 if (priv->station_is_associated) {
3303                         atmel_enter_state(priv, STATION_STATE_READY);
3304                 } else {
3305                         atmel_scan(priv, 1);
3306                 }
3307                 break;
3308
3309         case CMD_Join:
3310                 if (status == CMD_STATUS_COMPLETE) {
3311                         if (priv->operating_mode == IW_MODE_ADHOC) {
3312                                 priv->station_was_associated = priv->station_is_associated;
3313                                 atmel_enter_state(priv, STATION_STATE_READY);
3314                         } else {
3315                                 priv->AuthenticationRequestRetryCnt = 0;
3316                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3317
3318                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3319                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3320                                 send_authentication_request(priv, C80211_MGMT_AAN_SHAREDKEY, NULL, 0);
3321                         }
3322                         return;
3323                 }
3324
3325                 atmel_scan(priv, 1);
3326
3327         }
3328 }
3329
3330 static int atmel_wakeup_firmware(struct atmel_private *priv)
3331 {
3332         struct host_info_struct *iface = &priv->host_info;
3333         u16 mr1, mr3;
3334         int i;
3335
3336         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3337                 atmel_set_gcr(priv->dev, GCR_REMAP);
3338
3339         /* wake up on-board processor */
3340         atmel_clear_gcr(priv->dev, 0x0040);
3341         atmel_write16(priv->dev, BSR, BSS_SRAM);
3342
3343         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3344                 mdelay(100);
3345
3346         /* and wait for it */
3347         for (i =  LOOP_RETRY_LIMIT; i; i--) {
3348                 mr1 = atmel_read16(priv->dev, MR1);
3349                 mr3 = atmel_read16(priv->dev, MR3);
3350
3351                 if (mr3 & MAC_BOOT_COMPLETE)
3352                         break;
3353                 if (mr1 & MAC_BOOT_COMPLETE &&
3354                     priv->bus_type == BUS_TYPE_PCCARD)
3355                         break;
3356         }
3357
3358         if (i == 0) {
3359                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3360                 return 0;
3361         }
3362
3363         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3364                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3365                 return 0;
3366         }
3367
3368         /* now check for completion of MAC initialization through
3369            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3370            MAC initialization, check completion status, set interrupt mask,
3371            enables interrupts and calls Tx and Rx initialization functions */
3372
3373         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3374
3375         for (i =  LOOP_RETRY_LIMIT; i; i--) {
3376                 mr1 = atmel_read16(priv->dev, MR1);
3377                 mr3 = atmel_read16(priv->dev, MR3);
3378
3379                 if (mr3 & MAC_INIT_COMPLETE)
3380                         break;
3381                 if (mr1 & MAC_INIT_COMPLETE &&
3382                     priv->bus_type == BUS_TYPE_PCCARD)
3383                         break;
3384         }
3385
3386         if (i == 0) {
3387                 printk(KERN_ALERT "%s: MAC failed to initialise.\n", priv->dev->name);
3388                 return 0;
3389         }
3390
3391         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3392         if ((mr3 & MAC_INIT_COMPLETE) &&
3393             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3394                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3395                 return 0;
3396         }
3397         if ((mr1 & MAC_INIT_COMPLETE) &&
3398             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3399                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3400                 return 0;
3401         }
3402
3403         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3404                            priv->host_info_base, sizeof(*iface));
3405
3406         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3407         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3408         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3409         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3410         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3411         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3412         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3413         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3414         iface->build_version = le16_to_cpu(iface->build_version);
3415         iface->command_pos = le16_to_cpu(iface->command_pos);
3416         iface->major_version = le16_to_cpu(iface->major_version);
3417         iface->minor_version = le16_to_cpu(iface->minor_version);
3418         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3419         iface->mac_status = le16_to_cpu(iface->mac_status);
3420
3421         return 1;
3422 }
3423
3424 /* determine type of memory and MAC address */
3425 static int probe_atmel_card(struct net_device *dev)
3426 {
3427         int rc = 0;
3428         struct atmel_private *priv = netdev_priv(dev);
3429
3430         /* reset pccard */
3431         if (priv->bus_type == BUS_TYPE_PCCARD)
3432                 atmel_write16(dev, GCR, 0x0060);
3433
3434         atmel_write16(dev, GCR, 0x0040);
3435         mdelay(500);
3436
3437         if (atmel_read16(dev, MR2) == 0) {
3438                 /* No stored firmware so load a small stub which just
3439                    tells us the MAC address */
3440                 int i;
3441                 priv->card_type = CARD_TYPE_EEPROM;
3442                 atmel_write16(dev, BSR, BSS_IRAM);
3443                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3444                 atmel_set_gcr(dev, GCR_REMAP);
3445                 atmel_clear_gcr(priv->dev, 0x0040);
3446                 atmel_write16(dev, BSR, BSS_SRAM);
3447                 for (i =  LOOP_RETRY_LIMIT; i; i--)
3448                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3449                                 break;
3450                 if (i == 0) {
3451                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3452                 } else {
3453                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3454                         /* got address, now squash it again until the network
3455                            interface is opened */
3456                         if (priv->bus_type == BUS_TYPE_PCCARD)
3457                                 atmel_write16(dev, GCR, 0x0060);
3458                         atmel_write16(dev, GCR, 0x0040);
3459                         rc = 1;
3460                 }
3461         } else if (atmel_read16(dev, MR4) == 0) {
3462                 /* Mac address easy in this case. */
3463                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3464                 atmel_write16(dev,  BSR, 1);
3465                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3466                 atmel_write16(dev,  BSR, 0x200);
3467                 rc = 1;
3468         } else {
3469                 /* Standard firmware in flash, boot it up and ask
3470                    for the Mac Address */
3471                 priv->card_type = CARD_TYPE_SPI_FLASH;
3472                 if (atmel_wakeup_firmware(priv)) {
3473                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3474
3475                         /* got address, now squash it again until the network
3476                            interface is opened */
3477                         if (priv->bus_type == BUS_TYPE_PCCARD)
3478                                 atmel_write16(dev, GCR, 0x0060);
3479                         atmel_write16(dev, GCR, 0x0040);
3480                         rc = 1;
3481                 }
3482         }
3483
3484         if (rc) {
3485                 if (dev->dev_addr[0] == 0xFF) {
3486                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3487                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3488                         memcpy(dev->dev_addr, default_mac, 6);
3489                 }
3490         }
3491
3492         return rc;
3493 }
3494
3495 static void build_wep_mib(struct atmel_private *priv)
3496 /* Move the encyption information on the MIB structure.
3497    This routine is for the pre-WPA firmware: later firmware has
3498    a different format MIB and a different routine. */
3499 {
3500         struct { /* NB this is matched to the hardware, don't change. */
3501                 u8 wep_is_on;
3502                 u8 default_key; /* 0..3 */
3503                 u8 reserved;
3504                 u8 exclude_unencrypted;
3505
3506                 u32 WEPICV_error_count;
3507                 u32 WEP_excluded_count;
3508
3509                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3510                 u8 encryption_level; /* 0, 1, 2 */
3511                 u8 reserved2[3];
3512         } mib;
3513         int i;
3514
3515         mib.wep_is_on = priv->wep_is_on;
3516         if (priv->wep_is_on) {
3517                 if (priv->wep_key_len[priv->default_key] > 5)
3518                         mib.encryption_level = 2;
3519                 else
3520                         mib.encryption_level = 1;
3521         } else {
3522                 mib.encryption_level = 0;
3523         }
3524
3525         mib.default_key = priv->default_key;
3526         mib.exclude_unencrypted = priv->exclude_unencrypted;
3527
3528         for(i = 0; i < MAX_ENCRYPTION_KEYS;  i++)
3529                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3530
3531         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3532 }
3533
3534 static void build_wpa_mib(struct atmel_private *priv)
3535 {
3536         /* This is for the later (WPA enabled) firmware. */
3537
3538         struct { /* NB this is matched to the hardware, don't change. */
3539                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3540                 u8 receiver_address[6];
3541                 u8 wep_is_on;
3542                 u8 default_key; /* 0..3 */
3543                 u8 group_key;
3544                 u8 exclude_unencrypted;
3545                 u8 encryption_type;
3546                 u8 reserved;
3547
3548                 u32 WEPICV_error_count;
3549                 u32 WEP_excluded_count;
3550
3551                 u8 key_RSC[4][8];
3552         } mib;
3553
3554         int i;
3555
3556         mib.wep_is_on = priv->wep_is_on;
3557         mib.exclude_unencrypted = priv->exclude_unencrypted;
3558         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3559
3560         /* zero all the keys before adding in valid ones. */
3561         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3562
3563         if (priv->wep_is_on) {
3564                 /* There's a comment in the Atmel code to the effect that this is only valid
3565                    when still using WEP, it may need to be set to something to use WPA */
3566                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3567
3568                 mib.default_key = mib.group_key = 255;
3569                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3570                         if (priv->wep_key_len[i] > 0) {
3571                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3572                                 if (i == priv->default_key) {
3573                                         mib.default_key = i;
3574                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3575                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3576                                 } else {
3577                                         mib.group_key = i;
3578                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3579                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3580                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3581                                 }
3582                         }
3583                 }
3584                 if (mib.default_key == 255)
3585                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3586                 if (mib.group_key == 255)
3587                         mib.group_key = mib.default_key;
3588
3589         }
3590
3591         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3592 }
3593
3594 static int reset_atmel_card(struct net_device *dev)
3595 {
3596         /* do everything necessary to wake up the hardware, including
3597            waiting for the lightning strike and throwing the knife switch....
3598
3599            set all the Mib values which matter in the card to match
3600            their settings in the atmel_private structure. Some of these
3601            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3602            can only be changed by tearing down the world and coming back through
3603            here.
3604
3605            This routine is also responsible for initialising some
3606            hardware-specific fields in the atmel_private structure,
3607            including a copy of the firmware's hostinfo stucture
3608            which is the route into the rest of the firmare datastructures. */
3609
3610         struct atmel_private *priv = netdev_priv(dev);
3611         u8 configuration;
3612
3613         /* data to add to the firmware names, in priority order
3614            this implemenents firmware versioning */
3615
3616         static char *firmware_modifier[] = {
3617                 "-wpa",
3618                 "",
3619                 NULL
3620         };
3621
3622         /* reset pccard */
3623         if (priv->bus_type == BUS_TYPE_PCCARD)
3624                 atmel_write16(priv->dev, GCR, 0x0060);
3625
3626         /* stop card , disable interrupts */
3627         atmel_write16(priv->dev, GCR, 0x0040);
3628
3629         if (priv->card_type == CARD_TYPE_EEPROM) {
3630                 /* copy in firmware if needed */
3631                 const struct firmware *fw_entry = NULL;
3632                 unsigned char *fw;
3633                 int len = priv->firmware_length;
3634                 if (!(fw = priv->firmware)) {
3635                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3636                                 if (strlen(priv->firmware_id) == 0) {
3637                                         printk(KERN_INFO
3638                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3639                                                dev->name);
3640                                         printk(KERN_INFO
3641                                                "%s: if not, use the firmware= module parameter.\n",
3642                                                dev->name);
3643                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3644                                 }
3645                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3646                                         printk(KERN_ALERT
3647                                                "%s: firmware %s is missing, cannot continue.\n",
3648                                                dev->name, priv->firmware_id);
3649                                         return 0;
3650                                 }
3651                         } else {
3652                                 int fw_index = 0;
3653                                 int success = 0;
3654
3655                                 /* get firmware filename entry based on firmware type ID */
3656                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3657                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3658                                         fw_index++;
3659
3660                                 /* construct the actual firmware file name */
3661                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3662                                         int i;
3663                                         for (i = 0; firmware_modifier[i]; i++) {
3664                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3665                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3666                                                 priv->firmware_id[31] = '\0';
3667                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3668                                                         success = 1;
3669                                                         break;
3670                                                 }
3671                                         }
3672                                 }
3673                                 if (!success) {
3674                                         printk(KERN_ALERT
3675                                                "%s: firmware %s is missing, cannot start.\n",
3676                                                dev->name, priv->firmware_id);
3677                                         priv->firmware_id[0] = '\0';
3678                                         return 0;
3679                                 }
3680                         }
3681
3682                         fw = fw_entry->data;
3683                         len = fw_entry->size;
3684                 }
3685
3686                 if (len <= 0x6000) {
3687                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3688                         atmel_copy_to_card(priv->dev, 0, fw, len);
3689                         atmel_set_gcr(priv->dev, GCR_REMAP);
3690                 } else {
3691                         /* Remap */
3692                         atmel_set_gcr(priv->dev, GCR_REMAP);
3693                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3694                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3695                         atmel_write16(priv->dev, BSR, 0x2ff);
3696                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3697                 }
3698
3699                 if (fw_entry)
3700                         release_firmware(fw_entry);
3701         }
3702
3703         if (!atmel_wakeup_firmware(priv))
3704                 return 0;
3705
3706         /* Check the version and set the correct flag for wpa stuff,
3707            old and new firmware is incompatible.
3708            The pre-wpa 3com firmware reports major version 5,
3709            the wpa 3com firmware is major version 4 and doesn't need
3710            the 3com broken-ness filter. */
3711         priv->use_wpa = (priv->host_info.major_version == 4);
3712         priv->radio_on_broken = (priv->host_info.major_version == 5);
3713
3714         /* unmask all irq sources */
3715         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3716
3717         /* int Tx system and enable Tx */
3718         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3719         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3720         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3721         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3722
3723         priv->tx_desc_free = priv->host_info.tx_desc_count;
3724         priv->tx_desc_head = 0;
3725         priv->tx_desc_tail = 0;
3726         priv->tx_desc_previous = 0;
3727         priv->tx_free_mem = priv->host_info.tx_buff_size;
3728         priv->tx_buff_head = 0;
3729         priv->tx_buff_tail = 0;
3730
3731         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3732         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3733                                    configuration | FUNC_CTRL_TxENABLE);
3734
3735         /* init Rx system and enable */
3736         priv->rx_desc_head = 0;
3737
3738         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3739         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3740                                    configuration | FUNC_CTRL_RxENABLE);
3741
3742         if (!priv->radio_on_broken) {
3743                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3744                     CMD_STATUS_REJECTED_RADIO_OFF) {
3745                         printk(KERN_INFO
3746                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3747                                dev->name);
3748                         return 0;
3749                 }
3750         }
3751
3752         /* set up enough MIB values to run. */
3753         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3754         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3755         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3756         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3757         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3758         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3759         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3760         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3761                       priv->dev->dev_addr, 6);
3762         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3763         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3764         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3765         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3766         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3767         if (priv->use_wpa)
3768                 build_wpa_mib(priv);
3769         else
3770                 build_wep_mib(priv);
3771
3772         return 1;
3773 }
3774
3775 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3776 {
3777         if (cmd)
3778                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
3779                                    cmd, cmd_size);
3780
3781         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
3782         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
3783 }
3784
3785 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3786 {
3787         int i, status;
3788
3789         atmel_send_command(priv, command, cmd, cmd_size);
3790
3791         for (i = 5000; i; i--) {
3792                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3793                 if (status != CMD_STATUS_IDLE &&
3794                     status != CMD_STATUS_IN_PROGRESS)
3795                         break;
3796                 udelay(20);
3797         }
3798
3799         if (i == 0) {
3800                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
3801                 status =  CMD_STATUS_HOST_ERROR;
3802         } else {
3803                 if (command != CMD_EnableRadio)
3804                         status = CMD_STATUS_COMPLETE;
3805         }
3806
3807         return status;
3808 }
3809
3810 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
3811 {
3812         struct get_set_mib m;
3813         m.type = type;
3814         m.size = 1;
3815         m.index = index;
3816
3817         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3818         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
3819 }
3820
3821 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
3822 {
3823         struct get_set_mib m;
3824         m.type = type;
3825         m.size = 1;
3826         m.index = index;
3827         m.data[0] = data;
3828
3829         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3830 }
3831
3832 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data)
3833 {
3834         struct get_set_mib m;
3835         m.type = type;
3836         m.size = 2;
3837         m.index = index;
3838         m.data[0] = data;
3839         m.data[1] = data >> 8;
3840
3841         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
3842 }
3843
3844 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3845 {
3846         struct get_set_mib m;
3847         m.type = type;
3848         m.size = data_len;
3849         m.index = index;
3850
3851         if (data_len > MIB_MAX_DATA_BYTES)
3852                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3853
3854         memcpy(m.data, data, data_len);
3855         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3856 }
3857
3858 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3859 {
3860         struct get_set_mib m;
3861         m.type = type;
3862         m.size = data_len;
3863         m.index = index;
3864
3865         if (data_len > MIB_MAX_DATA_BYTES)
3866                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3867
3868         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3869         atmel_copy_to_host(priv->dev, data,
3870                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
3871 }
3872
3873 static void atmel_writeAR(struct net_device *dev, u16 data)
3874 {
3875         int i;
3876         outw(data, dev->base_addr + AR);
3877         /* Address register appears to need some convincing..... */
3878         for (i = 0; data != inw(dev->base_addr + AR) && i<10; i++)
3879                 outw(data, dev->base_addr + AR);
3880 }
3881
3882 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len)
3883 {
3884         int i;
3885         atmel_writeAR(dev, dest);
3886         if (dest % 2) {
3887                 atmel_write8(dev, DR, *src);
3888                 src++; len--;
3889         }
3890         for (i = len; i > 1 ; i -= 2) {
3891                 u8 lb = *src++;
3892                 u8 hb = *src++;
3893                 atmel_write16(dev, DR, lb | (hb << 8));
3894         }
3895         if (i)
3896                 atmel_write8(dev, DR, *src);
3897 }
3898
3899 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len)
3900 {
3901         int i;
3902         atmel_writeAR(dev, src);
3903         if (src % 2) {
3904                 *dest = atmel_read8(dev, DR);
3905                 dest++; len--;
3906         }
3907         for (i = len; i > 1 ; i -= 2) {
3908                 u16 hw = atmel_read16(dev, DR);
3909                 *dest++ = hw;
3910                 *dest++ = hw >> 8;
3911         }
3912         if (i)
3913                 *dest = atmel_read8(dev, DR);
3914 }
3915
3916 static void atmel_set_gcr(struct net_device *dev, u16 mask)
3917 {
3918         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
3919 }
3920
3921 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
3922 {
3923         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
3924 }
3925
3926 static int atmel_lock_mac(struct atmel_private *priv)
3927 {
3928         int i, j = 20;
3929  retry:
3930         for (i = 5000; i; i--) {
3931                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
3932                         break;
3933                 udelay(20);
3934         }
3935
3936         if (!i) return 0; /* timed out */
3937
3938         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
3939         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
3940                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
3941                 if (!j--) return 0; /* timed out */
3942                 goto retry;
3943         }
3944
3945         return 1;
3946 }
3947
3948 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
3949 {
3950         atmel_writeAR(priv->dev, pos);
3951         atmel_write16(priv->dev, DR, data); /* card is little-endian */
3952         atmel_write16(priv->dev, DR, data >> 16);
3953 }
3954
3955 /***************************************************************************/
3956 /* There follows the source form of the MAC address reading firmware       */
3957 /***************************************************************************/
3958 #if 0
3959
3960 /* Copyright 2003 Matthew T. Russotto                                      */
3961 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
3962 /* included in "atmel wireless lan drivers" package                        */
3963 /**
3964     This file is part of net.russotto.AtmelMACFW, hereto referred to
3965     as AtmelMACFW
3966
3967     AtmelMACFW is free software; you can redistribute it and/or modify
3968     it under the terms of the GNU General Public License version 2
3969     as published by the Free Software Foundation.
3970
3971     AtmelMACFW is distributed in the hope that it will be useful,
3972     but WITHOUT ANY WARRANTY; without even the implied warranty of
3973     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
3974     GNU General Public License for more details.
3975
3976     You should have received a copy of the GNU General Public License
3977     along with AtmelMACFW; if not, write to the Free Software
3978     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
3979
3980 ****************************************************************************/
3981 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
3982 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
3983 /* It only works on SPI EEPROM versions of the card.                       */
3984
3985 /* This firmware initializes the SPI controller and clock, reads the MAC   */
3986 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
3987 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
3988 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
3989 /* MR4, for investigational purposes (maybe we can determine chip type     */
3990 /* from that?)                                                             */
3991
3992         .org 0
3993     .set MRBASE, 0x8000000
3994         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
3995         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
3996         .set SRAM_BASE,  0x02000000
3997         .set SP_BASE,    0x0F300000
3998         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
3999         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4000         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4001         .set STACK_BASE, 0x5600
4002         .set SP_SR, 0x10
4003         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4004         .set SP_RDRF, 1 /* status register bit -- RDR full */
4005         .set SP_SWRST, 0x80
4006         .set SP_SPIEN, 0x1
4007         .set SP_CR, 0   /* control register */
4008         .set SP_MR, 4   /* mode register */
4009         .set SP_RDR, 0x08 /* Read Data Register */
4010         .set SP_TDR, 0x0C /* Transmit Data Register */
4011         .set SP_CSR0, 0x30 /* chip select registers */
4012         .set SP_CSR1, 0x34
4013         .set SP_CSR2, 0x38
4014         .set SP_CSR3, 0x3C
4015         .set NVRAM_CMD_RDSR, 5 /* read status register */
4016         .set NVRAM_CMD_READ, 3 /* read data */
4017         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4018         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4019                                   serial output, since SO is normally high.  But it
4020                                   does cause 8 clock cycles and thus 8 bits to be
4021                                   clocked in to the chip.  See Atmel's SPI
4022                                   controller (e.g. AT91M55800) timing and 4K
4023                                   SPI EEPROM manuals */
4024
4025         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4026         .set NVRAM_IMAGE, 0x02000200
4027         .set NVRAM_LENGTH, 0x0200
4028         .set MAC_ADDRESS_MIB, SRAM_BASE
4029         .set MAC_ADDRESS_LENGTH, 6
4030         .set MAC_BOOT_FLAG, 0x10
4031         .set MR1, 0
4032         .set MR2, 4
4033         .set MR3, 8
4034         .set MR4, 0xC
4035 RESET_VECTOR:
4036         b RESET_HANDLER
4037 UNDEF_VECTOR:
4038         b HALT1
4039 SWI_VECTOR:
4040         b HALT1
4041 IABORT_VECTOR:
4042         b HALT1
4043 DABORT_VECTOR:
4044 RESERVED_VECTOR:
4045         b HALT1
4046 IRQ_VECTOR:
4047         b HALT1
4048 FIQ_VECTOR:
4049         b HALT1
4050 HALT1:  b HALT1
4051 RESET_HANDLER:
4052         mov     r0, #CPSR_INITIAL
4053         msr     CPSR_c, r0      /* This is probably unnecessary */
4054
4055 /* I'm guessing this is initializing clock generator electronics for SPI */
4056         ldr     r0, =SPI_CGEN_BASE
4057         mov     r1, #0
4058         mov     r1, r1, lsl #3
4059         orr     r1,r1, #0
4060         str     r1, [r0]
4061         ldr     r1, [r0, #28]
4062         bic     r1, r1, #16
4063         str     r1, [r0, #28]
4064         mov     r1, #1
4065         str     r1, [r0, #8]
4066
4067         ldr     r0, =MRBASE
4068         mov     r1, #0
4069         strh    r1, [r0, #MR1]
4070         strh    r1, [r0, #MR2]
4071         strh    r1, [r0, #MR3]
4072         strh    r1, [r0, #MR4]
4073
4074         mov     sp, #STACK_BASE
4075         bl      SP_INIT
4076         mov     r0, #10
4077         bl      DELAY9
4078         bl      GET_MAC_ADDR
4079         bl      GET_WHOLE_NVRAM
4080         ldr     r0, =MRBASE
4081         ldr     r1, =MAC_ADDRESS_MIB
4082         strh    r1, [r0, #MR2]
4083         ldr     r1, =NVRAM_IMAGE
4084         strh    r1, [r0, #MR4]
4085         mov     r1, #MAC_BOOT_FLAG
4086         strh    r1, [r0, #MR3]
4087 HALT2:  b HALT2
4088 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4089 GET_WHOLE_NVRAM:
4090         stmdb   sp!, {lr}
4091         mov     r2, #0 /* 0th bytes of NVRAM */
4092         mov     r3, #NVRAM_LENGTH
4093         mov     r1, #0          /* not used in routine */
4094         ldr     r0, =NVRAM_IMAGE
4095         bl      NVRAM_XFER
4096         ldmia   sp!, {lr}
4097         bx      lr
4098 .endfunc
4099
4100 .func Get_MAC_Addr, GET_MAC_ADDR
4101 GET_MAC_ADDR:
4102         stmdb   sp!, {lr}
4103         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4104         mov     r3, #MAC_ADDRESS_LENGTH
4105         mov     r1, #0          /* not used in routine */
4106         ldr     r0, =MAC_ADDRESS_MIB
4107         bl      NVRAM_XFER
4108         ldmia   sp!, {lr}
4109         bx      lr
4110 .endfunc
4111 .ltorg
4112 .func Delay9, DELAY9
4113 DELAY9:
4114         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4115 DELAYLOOP:
4116         beq     DELAY9_done
4117         subs    r0, r0, #1
4118         b       DELAYLOOP
4119 DELAY9_done:
4120         bx      lr
4121 .endfunc
4122
4123 .func SP_Init, SP_INIT
4124 SP_INIT:
4125         mov     r1, #SP_SWRST
4126         ldr     r0, =SP_BASE
4127         str     r1, [r0, #SP_CR] /* reset the SPI */
4128         mov     r1, #0
4129         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4130         mov     r1, #SP_SPIEN
4131         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4132         str     r1, [r0, #SP_CR] /* enable the SPI */
4133
4134 /*  My guess would be this turns on the SPI clock */
4135         ldr     r3, =SPI_CGEN_BASE
4136         ldr     r1, [r3, #28]
4137         orr     r1, r1, #0x2000
4138         str     r1, [r3, #28]
4139
4140         ldr     r1, =0x2000c01
4141         str     r1, [r0, #SP_CSR0]
4142         ldr     r1, =0x2000201
4143         str     r1, [r0, #SP_CSR1]
4144         str     r1, [r0, #SP_CSR2]
4145         str     r1, [r0, #SP_CSR3]
4146         ldr     r1, [r0, #SP_SR]
4147         ldr     r0, [r0, #SP_RDR]
4148         bx      lr
4149 .endfunc
4150 .func NVRAM_Init, NVRAM_INIT
4151 NVRAM_INIT:
4152         ldr     r1, =SP_BASE
4153         ldr     r0, [r1, #SP_RDR]
4154         mov     r0, #NVRAM_CMD_RDSR
4155         str     r0, [r1, #SP_TDR]
4156 SP_loop1:
4157         ldr     r0, [r1, #SP_SR]
4158         tst     r0, #SP_TDRE
4159         beq     SP_loop1
4160
4161         mov     r0, #SPI_8CLOCKS
4162         str     r0, [r1, #SP_TDR]
4163 SP_loop2:
4164         ldr     r0, [r1, #SP_SR]
4165         tst     r0, #SP_TDRE
4166         beq     SP_loop2
4167
4168         ldr     r0, [r1, #SP_RDR]
4169 SP_loop3:
4170         ldr     r0, [r1, #SP_SR]
4171         tst     r0, #SP_RDRF
4172         beq     SP_loop3
4173
4174         ldr     r0, [r1, #SP_RDR]
4175         and     r0, r0, #255
4176         bx      lr
4177 .endfunc
4178
4179 .func NVRAM_Xfer, NVRAM_XFER
4180         /* r0 = dest address */
4181         /* r1 = not used */
4182         /* r2 = src address within NVRAM */
4183         /* r3 = length */
4184 NVRAM_XFER:
4185         stmdb   sp!, {r4, r5, lr}
4186         mov     r5, r0          /* save r0 (dest address) */
4187         mov     r4, r3          /* save r3 (length) */
4188         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4189         and     r0, r0, #8
4190         add     r0, r0, #NVRAM_CMD_READ
4191         ldr     r1, =NVRAM_SCRATCH
4192         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4193         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4194 _local1:
4195         bl      NVRAM_INIT
4196         tst     r0, #NVRAM_SR_RDY
4197         bne     _local1
4198         mov     r0, #20
4199         bl      DELAY9
4200         mov     r2, r4          /* length */
4201         mov     r1, r5          /* dest address */
4202         mov     r0, #2          /* bytes to transfer in command */
4203         bl      NVRAM_XFER2
4204         ldmia   sp!, {r4, r5, lr}
4205         bx      lr
4206 .endfunc
4207
4208 .func NVRAM_Xfer2, NVRAM_XFER2
4209 NVRAM_XFER2:
4210         stmdb   sp!, {r4, r5, r6, lr}
4211         ldr     r4, =SP_BASE
4212         mov     r3, #0
4213         cmp     r0, #0
4214         bls     _local2
4215         ldr     r5, =NVRAM_SCRATCH
4216 _local4:
4217         ldrb    r6, [r5, r3]
4218         str     r6, [r4, #SP_TDR]
4219 _local3:
4220         ldr     r6, [r4, #SP_SR]
4221         tst     r6, #SP_TDRE
4222         beq     _local3
4223         add     r3, r3, #1
4224         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4225         blo     _local4
4226 _local2:
4227         mov     r3, #SPI_8CLOCKS
4228         str     r3, [r4, #SP_TDR]
4229         ldr     r0, [r4, #SP_RDR]
4230 _local5:
4231         ldr     r0, [r4, #SP_SR]
4232         tst     r0, #SP_RDRF
4233         beq     _local5
4234         ldr     r0, [r4, #SP_RDR] /* what's this byte?  It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
4235         mov     r0, #0
4236         cmp     r2, #0  /* r2 is # of bytes to copy in */
4237         bls     _local6
4238 _local7:
4239         ldr     r5, [r4, #SP_SR]
4240         tst     r5, #SP_TDRE
4241         beq     _local7
4242         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4243 _local8:
4244         ldr     r5, [r4, #SP_SR]
4245         tst     r5, #SP_RDRF
4246         beq     _local8
4247         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4248         strb    r5, [r1], #1 /* postindexed */
4249         add     r0, r0, #1
4250         cmp     r0, r2
4251         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4252 _local6:
4253         mov     r0, #200
4254         bl      DELAY9
4255         ldmia   sp!, {r4, r5, r6, lr}
4256         bx      lr
4257 #endif