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 96
  76
  77 MODULE_AUTHOR("Simon Kelley");
  78 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  79 MODULE_LICENSE("GPL");
  80 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  81
  82 /* The name of the firmware file to be loaded
  83    over-rides any automatic selection */
  84 static char *firmware = NULL;
  85 module_param(firmware, charp, 0);
  86
  87 /* table of firmware file names */
  88 static struct {
  89         AtmelFWType fw_type;
  90         const char *fw_file;
  91         const char *fw_file_ext;
  92 } fw_table[] = {
  93         { ATMEL_FW_TYPE_502,      "atmel_at76c502",      "bin" },
  94         { ATMEL_FW_TYPE_502D,     "atmel_at76c502d",     "bin" },
  95         { ATMEL_FW_TYPE_502E,     "atmel_at76c502e",     "bin" },
  96         { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
  97         { ATMEL_FW_TYPE_504,      "atmel_at76c504",      "bin" },
  98         { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
  99         { ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
 100         { ATMEL_FW_TYPE_506,      "atmel_at76c506",      "bin" },
 101         { ATMEL_FW_TYPE_NONE,      NULL,                  NULL }
 102 };
 103
 104 #define MAX_SSID_LENGTH 32
 105 #define MGMT_JIFFIES (256 * HZ / 100)
 106
 107 #define MAX_BSS_ENTRIES 64
 108
 109 /* registers */
 110 #define GCR  0x00    //      (SIR0)  General Configuration Register
 111 #define BSR  0x02    //      (SIR1)  Bank Switching Select Register
 112 #define AR   0x04
 113 #define DR   0x08
 114 #define MR1  0x12    //      Mirror Register 1
 115 #define MR2  0x14    //      Mirror Register 2
 116 #define MR3  0x16    //      Mirror Register 3
 117 #define MR4  0x18    //      Mirror Register 4
 118
 119 #define GPR1                            0x0c
 120 #define GPR2                            0x0e
 121 #define GPR3                            0x10
 122 //
 123 // Constants for the GCR register.
 124 //
 125 #define GCR_REMAP     0x0400          // Remap internal SRAM to 0
 126 #define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset)
 127 #define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
 128 #define GCR_ENINT     0x0002          // Enable Interrupts
 129 #define GCR_ACKINT    0x0008          // Acknowledge Interrupts
 130
 131 #define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
 132 #define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
 133 //
 134 // Constants for the MR registers.
 135 //
 136 #define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
 137 #define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
 138 #define MAC_INIT_OK             0x0002        // MAC boot has been completed
 139
 140 #define C80211_SUBTYPE_MGMT_ASS_REQUEST                 0x00
 141 #define C80211_SUBTYPE_MGMT_ASS_RESPONSE                0x10
 142 #define C80211_SUBTYPE_MGMT_REASS_REQUEST               0x20
 143 #define C80211_SUBTYPE_MGMT_REASS_RESPONSE              0x30
 144 #define C80211_SUBTYPE_MGMT_ProbeRequest                0x40
 145 #define C80211_SUBTYPE_MGMT_ProbeResponse               0x50
 146 #define C80211_SUBTYPE_MGMT_BEACON                      0x80
 147 #define C80211_SUBTYPE_MGMT_ATIM                        0x90
 148 #define C80211_SUBTYPE_MGMT_DISASSOSIATION              0xA0
 149 #define C80211_SUBTYPE_MGMT_Authentication              0xB0
 150 #define C80211_SUBTYPE_MGMT_Deauthentication    0xC0
 151
 152 #define C80211_MGMT_AAN_OPENSYSTEM              0x0000
 153 #define C80211_MGMT_AAN_SHAREDKEY               0x0001
 154
 155 #define C80211_MGMT_CAPABILITY_ESS              0x0001  // see 802.11 p.58
 156 #define C80211_MGMT_CAPABILITY_IBSS             0x0002  //      - " -
 157 #define C80211_MGMT_CAPABILITY_CFPollable       0x0004  //      - " -
 158 #define C80211_MGMT_CAPABILITY_CFPollRequest    0x0008  //      - " -
 159 #define C80211_MGMT_CAPABILITY_Privacy          0x0010  //      - " -
 160
 161 #define C80211_MGMT_SC_Success                  0
 162 #define C80211_MGMT_SC_Unspecified              1
 163 #define C80211_MGMT_SC_SupportCapabilities      10
 164 #define C80211_MGMT_SC_ReassDenied              11
 165 #define C80211_MGMT_SC_AssDenied                12
 166 #define C80211_MGMT_SC_AuthAlgNotSupported      13
 167 #define C80211_MGMT_SC_AuthTransSeqNumError     14
 168 #define C80211_MGMT_SC_AuthRejectChallenge      15
 169 #define C80211_MGMT_SC_AuthRejectTimeout        16
 170 #define C80211_MGMT_SC_AssDeniedHandleAP        17
 171 #define C80211_MGMT_SC_AssDeniedBSSRate         18
 172
 173 #define C80211_MGMT_ElementID_SSID              0
 174 #define C80211_MGMT_ElementID_SupportedRates    1
 175 #define C80211_MGMT_ElementID_ChallengeText     16
 176 #define C80211_MGMT_CAPABILITY_ShortPreamble    0x0020
 177
 178 #define MIB_MAX_DATA_BYTES    212
 179 #define MIB_HEADER_SIZE       4    /* first four fields */
 180
 181 struct get_set_mib {
 182         u8 type;
 183         u8 size;
 184         u8 index;
 185         u8 reserved;
 186         u8 data[MIB_MAX_DATA_BYTES];
 187 };
 188
 189 struct rx_desc {
 190         u32          Next;
 191         u16          MsduPos;
 192         u16          MsduSize;
 193
 194         u8           State;
 195         u8           Status;
 196         u8           Rate;
 197         u8           Rssi;
 198         u8           LinkQuality;
 199         u8           PreambleType;
 200         u16          Duration;
 201         u32          RxTime;
 202
 203 };
 204
 205 #define RX_DESC_FLAG_VALID       0x80
 206 #define RX_DESC_FLAG_CONSUMED    0x40
 207 #define RX_DESC_FLAG_IDLE        0x00
 208
 209 #define RX_STATUS_SUCCESS        0x00
 210
 211 #define RX_DESC_MSDU_POS_OFFSET      4
 212 #define RX_DESC_MSDU_SIZE_OFFSET     6
 213 #define RX_DESC_FLAGS_OFFSET         8
 214 #define RX_DESC_STATUS_OFFSET        9
 215 #define RX_DESC_RSSI_OFFSET          11
 216 #define RX_DESC_LINK_QUALITY_OFFSET  12
 217 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 218 #define RX_DESC_DURATION_OFFSET      14
 219 #define RX_DESC_RX_TIME_OFFSET       16
 220
 221
 222 struct tx_desc {
 223         u32       NextDescriptor;
 224         u16       TxStartOfFrame;
 225         u16       TxLength;
 226
 227         u8        TxState;
 228         u8        TxStatus;
 229         u8        RetryCount;
 230
 231         u8        TxRate;
 232
 233         u8        KeyIndex;
 234         u8        ChiperType;
 235         u8        ChipreLength;
 236         u8        Reserved1;
 237
 238         u8        Reserved;
 239         u8        PacketType;
 240         u16       HostTxLength;
 241
 242 };
 243
 244
 245 #define TX_DESC_NEXT_OFFSET          0
 246 #define TX_DESC_POS_OFFSET           4
 247 #define TX_DESC_SIZE_OFFSET          6
 248 #define TX_DESC_FLAGS_OFFSET         8
 249 #define TX_DESC_STATUS_OFFSET        9
 250 #define TX_DESC_RETRY_OFFSET         10
 251 #define TX_DESC_RATE_OFFSET          11
 252 #define TX_DESC_KEY_INDEX_OFFSET     12
 253 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 254 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 255 #define TX_DESC_PACKET_TYPE_OFFSET   17
 256 #define TX_DESC_HOST_LENGTH_OFFSET   18
 257
 258
 259
 260 ///////////////////////////////////////////////////////
 261 // Host-MAC interface
 262 ///////////////////////////////////////////////////////
 263
 264 #define TX_STATUS_SUCCESS       0x00
 265
 266 #define TX_FIRM_OWN             0x80
 267 #define TX_DONE                 0x40
 268
 269
 270 #define TX_ERROR                0x01
 271
 272 #define TX_PACKET_TYPE_DATA     0x01
 273 #define TX_PACKET_TYPE_MGMT     0x02
 274
 275 #define ISR_EMPTY               0x00        // no bits set in ISR
 276 #define ISR_TxCOMPLETE          0x01        // packet transmitted
 277 #define ISR_RxCOMPLETE          0x02        // packet received
 278 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
 279 #define ISR_FATAL_ERROR         0x08        // Fatal error
 280 #define ISR_COMMAND_COMPLETE    0x10        // command completed
 281 #define ISR_OUT_OF_RANGE        0x20        // command completed
 282 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
 283 #define ISR_GENERIC_IRQ         0x80
 284
 285
 286 #define Local_Mib_Type          0x01
 287 #define Mac_Address_Mib_Type    0x02
 288 #define Mac_Mib_Type            0x03
 289 #define Statistics_Mib_Type     0x04
 290 #define Mac_Mgmt_Mib_Type       0x05
 291 #define Mac_Wep_Mib_Type        0x06
 292 #define Phy_Mib_Type            0x07
 293 #define Multi_Domain_MIB        0x08
 294
 295 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 296 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 297 #define MAC_MIB_RTS_THRESHOLD_POS             10
 298 #define MAC_MIB_SHORT_RETRY_POS               16
 299 #define MAC_MIB_LONG_RETRY_POS                17
 300 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 301 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 302 #define MAC_MGMT_MIB_STATION_ID_POS           6
 303 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 304 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 305 #define MAC_MGMT_MIB_PS_MODE_POS              53
 306 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 307 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 308 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 309 #define PHY_MIB_CHANNEL_POS                   14
 310 #define PHY_MIB_RATE_SET_POS                  20
 311 #define PHY_MIB_REG_DOMAIN_POS                26
 312 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 313 #define LOCAL_MIB_SSID_SIZE                   5
 314 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 315 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 316 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 317 #define LOCAL_MIB_PREAMBLE_TYPE               9
 318 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 319
 320
 321 #define         CMD_Set_MIB_Vars              0x01
 322 #define         CMD_Get_MIB_Vars              0x02
 323 #define         CMD_Scan                      0x03
 324 #define         CMD_Join                      0x04
 325 #define         CMD_Start                     0x05
 326 #define         CMD_EnableRadio               0x06
 327 #define         CMD_DisableRadio              0x07
 328 #define         CMD_SiteSurvey                0x0B
 329
 330 #define         CMD_STATUS_IDLE                   0x00
 331 #define         CMD_STATUS_COMPLETE               0x01
 332 #define         CMD_STATUS_UNKNOWN                0x02
 333 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 334 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 335 #define         CMD_STATUS_TIME_OUT               0x07
 336 #define         CMD_STATUS_IN_PROGRESS            0x08
 337 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 338 #define         CMD_STATUS_HOST_ERROR             0xFF
 339 #define         CMD_STATUS_BUSY                   0xFE
 340
 341
 342 #define CMD_BLOCK_COMMAND_OFFSET        0
 343 #define CMD_BLOCK_STATUS_OFFSET         1
 344 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 345
 346 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 347
 348 #define MGMT_FRAME_BODY_OFFSET          24
 349 #define MAX_AUTHENTICATION_RETRIES      3
 350 #define MAX_ASSOCIATION_RETRIES         3
 351
 352 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 353
 354 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 355 #define LOOP_RETRY_LIMIT   500000
 356
 357 #define ACTIVE_MODE     1
 358 #define PS_MODE         2
 359
 360 #define MAX_ENCRYPTION_KEYS 4
 361 #define MAX_ENCRYPTION_KEY_SIZE 40
 362
 363 ///////////////////////////////////////////////////////////////////////////
 364 // 802.11 related definitions
 365 ///////////////////////////////////////////////////////////////////////////
 366
 367 //
 368 // Regulatory Domains
 369 //
 370
 371 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
 372 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
 373 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
 374 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
 375 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
 376 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
 377 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
 378 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
 379
 380 #define BSS_TYPE_AD_HOC         1
 381 #define BSS_TYPE_INFRASTRUCTURE 2
 382
 383 #define SCAN_TYPE_ACTIVE        0
 384 #define SCAN_TYPE_PASSIVE       1
 385
 386 #define LONG_PREAMBLE           0
 387 #define SHORT_PREAMBLE          1
 388 #define AUTO_PREAMBLE           2
 389
 390 #define DATA_FRAME_WS_HEADER_SIZE   30
 391
 392 /* promiscuous mode control */
 393 #define PROM_MODE_OFF                   0x0
 394 #define PROM_MODE_UNKNOWN               0x1
 395 #define PROM_MODE_CRC_FAILED            0x2
 396 #define PROM_MODE_DUPLICATED            0x4
 397 #define PROM_MODE_MGMT                  0x8
 398 #define PROM_MODE_CTRL                  0x10
 399 #define PROM_MODE_BAD_PROTOCOL          0x20
 400
 401
 402 #define IFACE_INT_STATUS_OFFSET         0
 403 #define IFACE_INT_MASK_OFFSET           1
 404 #define IFACE_LOCKOUT_HOST_OFFSET       2
 405 #define IFACE_LOCKOUT_MAC_OFFSET        3
 406 #define IFACE_FUNC_CTRL_OFFSET          28
 407 #define IFACE_MAC_STAT_OFFSET           30
 408 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 409
 410 #define CIPHER_SUITE_NONE     0
 411 #define CIPHER_SUITE_WEP_64   1
 412 #define CIPHER_SUITE_TKIP     2
 413 #define CIPHER_SUITE_AES      3
 414 #define CIPHER_SUITE_CCX      4
 415 #define CIPHER_SUITE_WEP_128  5
 416
 417 //
 418 // IFACE MACROS & definitions
 419 //
 420 //
 421
 422 // FuncCtrl field:
 423 //
 424 #define FUNC_CTRL_TxENABLE              0x10
 425 #define FUNC_CTRL_RxENABLE              0x20
 426 #define FUNC_CTRL_INIT_COMPLETE         0x01
 427
 428 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 429    For copyright information and source see the end of this file. */
 430 static u8 mac_reader[] = {
 431         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
 432         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
 433         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 434         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
 435         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
 436         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
 437         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
 438         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
 439         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
 440         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
 441         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 442         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 443         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 444         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 445         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
 446         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
 447         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
 448         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
 449         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
 450         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
 451         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
 452         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
 453         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
 454         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 455         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 456         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
 457         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
 458         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
 459         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
 460         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
 461         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
 462         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
 463         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
 464         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
 465         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
 466         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
 467         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
 468         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
 469         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
 470         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
 471         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
 472         0x00,0x01,0x00,0x02
 473 };
 474
 475 struct atmel_private {
 476         void *card; /* Bus dependent stucture varies for PCcard */
 477         int (*present_callback)(void *); /* And callback which uses it */
 478         char firmware_id[32];
 479         AtmelFWType firmware_type;
 480         u8 *firmware;
 481         int firmware_length;
 482         struct timer_list management_timer;
 483         struct net_device *dev;
 484         struct device *sys_dev;
 485         struct iw_statistics wstats;
 486         struct net_device_stats stats;  // device stats
 487         spinlock_t irqlock, timerlock;  // spinlocks
 488         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 489         enum {
 490                 CARD_TYPE_PARALLEL_FLASH,
 491                 CARD_TYPE_SPI_FLASH,
 492                 CARD_TYPE_EEPROM
 493         } card_type;
 494         int do_rx_crc; /* If we need to CRC incoming packets */
 495         int probe_crc; /* set if we don't yet know */
 496         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 497         u16 rx_desc_head;
 498         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 499         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 500
 501         u16 frag_seq, frag_len, frag_no;
 502         u8 frag_source[6];
 503
 504         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 505         u8 group_cipher_suite, pairwise_cipher_suite;
 506         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 507         int wep_key_len[MAX_ENCRYPTION_KEYS];
 508         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 509
 510         u16 host_info_base;
 511         struct host_info_struct {
 512                 /* NB this is matched to the hardware, don't change. */
 513                 u8 volatile int_status;
 514                 u8 volatile int_mask;
 515                 u8 volatile lockout_host;
 516                 u8 volatile lockout_mac;
 517
 518                 u16 tx_buff_pos;
 519                 u16 tx_buff_size;
 520                 u16 tx_desc_pos;
 521                 u16 tx_desc_count;
 522
 523                 u16 rx_buff_pos;
 524                 u16 rx_buff_size;
 525                 u16 rx_desc_pos;
 526                 u16 rx_desc_count;
 527
 528                 u16 build_version;
 529                 u16 command_pos;
 530
 531                 u16 major_version;
 532                 u16 minor_version;
 533
 534                 u16 func_ctrl;
 535                 u16 mac_status;
 536                 u16 generic_IRQ_type;
 537                 u8  reserved[2];
 538         } host_info;
 539
 540         enum {
 541                 STATION_STATE_SCANNING,
 542                 STATION_STATE_JOINNING,
 543                 STATION_STATE_AUTHENTICATING,
 544                 STATION_STATE_ASSOCIATING,
 545                 STATION_STATE_READY,
 546                 STATION_STATE_REASSOCIATING,
 547                 STATION_STATE_DOWN,
 548                 STATION_STATE_MGMT_ERROR
 549         } station_state;
 550
 551         int operating_mode, power_mode;
 552         time_t last_qual;
 553         int beacons_this_sec;
 554         int channel;
 555         int reg_domain, config_reg_domain;
 556         int tx_rate;
 557         int auto_tx_rate;
 558         int rts_threshold;
 559         int frag_threshold;
 560         int long_retry, short_retry;
 561         int preamble;
 562         int default_beacon_period, beacon_period, listen_interval;
 563         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 564         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 565         enum {
 566                 SITE_SURVEY_IDLE,
 567                 SITE_SURVEY_IN_PROGRESS,
 568                 SITE_SURVEY_COMPLETED
 569         } site_survey_state;
 570         time_t last_survey;
 571
 572         int station_was_associated, station_is_associated;
 573         int fast_scan;
 574
 575         struct bss_info {
 576                 int channel;
 577                 int SSIDsize;
 578                 int RSSI;
 579                 int UsingWEP;
 580                 int preamble;
 581                 int beacon_period;
 582                 int BSStype;
 583                 u8 BSSID[6];
 584                 u8 SSID[MAX_SSID_LENGTH];
 585         } BSSinfo[MAX_BSS_ENTRIES];
 586         int BSS_list_entries, current_BSS;
 587         int connect_to_any_BSS;
 588         int SSID_size, new_SSID_size;
 589         u8 CurrentBSSID[6], BSSID[6];
 590         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 591         u64 last_beacon_timestamp;
 592         u8 rx_buf[MAX_WIRELESS_BODY];
 593
 594 };
 595
 596 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
 597
 598 static const struct {
 599         int reg_domain;
 600         int min, max;
 601         char *name;
 602 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 603                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 604                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 605                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 606                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 607                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 608                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 609                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 610
 611 static void build_wpa_mib(struct atmel_private *priv);
 612 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 613 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len);
 614 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len);
 615 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 616 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 617 static int atmel_lock_mac(struct atmel_private *priv);
 618 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 619 static void atmel_command_irq(struct atmel_private *priv);
 620 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 621 static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
 622                                    u16 frame_len, u8 rssi);
 623 static void atmel_management_timer(u_long a);
 624 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
 625 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
 626 static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
 627                                             u8 *body, int body_len);
 628
 629 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 630 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data);
 631 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data);
 632 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
 633 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
 634 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 635 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 636 static void atmel_smooth_qual(struct atmel_private *priv);
 637 static void atmel_writeAR(struct net_device *dev, u16 data);
 638 static int probe_atmel_card(struct net_device *dev);
 639 static int reset_atmel_card(struct net_device *dev );
 640 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 641 int atmel_open (struct net_device *dev);
 642
 643 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 644 {
 645         return priv->host_info_base + offset;
 646 }
 647
 648 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 649 {
 650         return priv->host_info.command_pos + offset;
 651 }
 652
 653 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16  desc)
 654 {
 655         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 656 }
 657
 658 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16  desc)
 659 {
 660         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 661 }
 662
 663 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 664 {
 665         return inb(dev->base_addr + offset);
 666 }
 667
 668 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 669 {
 670         outb(data, dev->base_addr + offset);
 671 }
 672
 673 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 674 {
 675         return inw(dev->base_addr + offset);
 676 }
 677
 678 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 679 {
 680         outw(data, dev->base_addr + offset);
 681 }
 682
 683 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 684 {
 685         atmel_writeAR(priv->dev, pos);
 686         return atmel_read8(priv->dev, DR);
 687 }
 688
 689 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 690 {
 691         atmel_writeAR(priv->dev, pos);
 692         atmel_write8(priv->dev, DR, data);
 693 }
 694
 695 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 696 {
 697         atmel_writeAR(priv->dev, pos);
 698         return atmel_read16(priv->dev, DR);
 699 }
 700
 701 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 702 {
 703         atmel_writeAR(priv->dev, pos);
 704         atmel_write16(priv->dev, DR, data);
 705 }
 706
 707 static const struct iw_handler_def atmel_handler_def;
 708
 709 static void tx_done_irq(struct atmel_private *priv)
 710 {
 711         int i;
 712
 713         for (i = 0;
 714              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 715                      i < priv->host_info.tx_desc_count;
 716              i++) {
 717
 718                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 719                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 720                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 721
 722                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 723
 724                 priv->tx_free_mem += msdu_size;
 725                 priv->tx_desc_free++;
 726
 727                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 728                         priv->tx_buff_head = 0;
 729                 else
 730                         priv->tx_buff_head += msdu_size;
 731
 732                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 733                         priv->tx_desc_head++ ;
 734                 else
 735                         priv->tx_desc_head = 0;
 736
 737                 if (type == TX_PACKET_TYPE_DATA) {
 738                         if (status == TX_STATUS_SUCCESS)
 739                                 priv->stats.tx_packets++;
 740                         else
 741                                 priv->stats.tx_errors++;
 742                         netif_wake_queue(priv->dev);
 743                 }
 744         }
 745 }
 746
 747 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 748 {
 749         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 750
 751         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 752                 return 0;
 753
 754         if (bottom_free >= len)
 755                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 756
 757         if (priv->tx_free_mem - bottom_free >= len) {
 758                 priv->tx_buff_tail = 0;
 759                 return priv->host_info.tx_buff_pos;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, u16 len, u16 buff, u8 type)
 766 {
 767         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 768         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 769         if (!priv->use_wpa)
 770                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 771         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 772         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 773         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 774         if (priv->use_wpa) {
 775                 int cipher_type, cipher_length;
 776                 if (is_bcast) {
 777                         cipher_type = priv->group_cipher_suite;
 778                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 779                             cipher_type == CIPHER_SUITE_WEP_128 )
 780                                 cipher_length = 8;
 781                         else if (cipher_type == CIPHER_SUITE_TKIP)
 782                                 cipher_length = 12;
 783                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 784                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 785                                 cipher_type = priv->pairwise_cipher_suite;
 786                                 cipher_length = 8;
 787                         } else {
 788                                 cipher_type = CIPHER_SUITE_NONE;
 789                                 cipher_length = 0;
 790                         }
 791                 } else {
 792                         cipher_type = priv->pairwise_cipher_suite;
 793                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 794                             cipher_type == CIPHER_SUITE_WEP_128 )
 795                                 cipher_length = 8;
 796                         else if (cipher_type == CIPHER_SUITE_TKIP)
 797                                 cipher_length = 12;
 798                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 799                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 800                                 cipher_type = priv->group_cipher_suite;
 801                                 cipher_length = 8;
 802                         } else {
 803                                 cipher_type = CIPHER_SUITE_NONE;
 804                                 cipher_length = 0;
 805                         }
 806                 }
 807
 808                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 809                             cipher_type);
 810                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 811                             cipher_length);
 812         }
 813         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 814         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 815         if (priv->tx_desc_previous != priv->tx_desc_tail)
 816                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 817         priv->tx_desc_previous = priv->tx_desc_tail;
 818         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count -1 ))
 819                 priv->tx_desc_tail++;
 820         else
 821                 priv->tx_desc_tail = 0;
 822         priv->tx_desc_free--;
 823         priv->tx_free_mem -= len;
 824
 825 }
 826
 827 static int start_tx (struct sk_buff *skb, struct net_device *dev)
 828 {
 829         struct atmel_private *priv = netdev_priv(dev);
 830         struct ieee80211_hdr_4addr header;
 831         unsigned long flags;
 832         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 833         u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
 834
 835         if (priv->card && priv->present_callback &&
 836             !(*priv->present_callback)(priv->card)) {
 837                 priv->stats.tx_errors++;
 838                 dev_kfree_skb(skb);
 839                 return 0;
 840         }
 841
 842         if (priv->station_state != STATION_STATE_READY) {
 843                 priv->stats.tx_errors++;
 844                 dev_kfree_skb(skb);
 845                 return 0;
 846         }
 847
 848         /* first ensure the timer func cannot run */
 849         spin_lock_bh(&priv->timerlock);
 850         /* then stop the hardware ISR */
 851         spin_lock_irqsave(&priv->irqlock, flags);
 852         /* nb doing the above in the opposite order will deadlock */
 853
 854         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 855            12 first bytes (containing DA/SA) and put them in the appropriate fields of
 856            the Wireless Header. Thus the packet length is then the initial + 18 (+30-12) */
 857
 858         if (!(buff = find_tx_buff(priv, len + 18))) {
 859                 priv->stats.tx_dropped++;
 860                 spin_unlock_irqrestore(&priv->irqlock, flags);
 861                 spin_unlock_bh(&priv->timerlock);
 862                 netif_stop_queue(dev);
 863                 return 1;
 864         }
 865
 866         frame_ctl = IEEE80211_FTYPE_DATA;
 867         header.duration_id = 0;
 868         header.seq_ctl = 0;
 869         if (priv->wep_is_on)
 870                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 871         if (priv->operating_mode == IW_MODE_ADHOC) {
 872                 memcpy(&header.addr1, skb->data, 6);
 873                 memcpy(&header.addr2, dev->dev_addr, 6);
 874                 memcpy(&header.addr3, priv->BSSID, 6);
 875         } else {
 876                 frame_ctl |= IEEE80211_FCTL_TODS;
 877                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 878                 memcpy(&header.addr2, dev->dev_addr, 6);
 879                 memcpy(&header.addr3, skb->data, 6);
 880         }
 881
 882         if (priv->use_wpa)
 883                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 884
 885         header.frame_ctl = cpu_to_le16(frame_ctl);
 886         /* Copy the wireless header into the card */
 887         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 888         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 889         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 890         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 891
 892         /* low bit of first byte of destination tells us if broadcast */
 893         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 894         dev->trans_start = jiffies;
 895         priv->stats.tx_bytes += len;
 896
 897         spin_unlock_irqrestore(&priv->irqlock, flags);
 898         spin_unlock_bh(&priv->timerlock);
 899         dev_kfree_skb(skb);
 900
 901         return 0;
 902 }
 903
 904 static void atmel_transmit_management_frame(struct atmel_private *priv,
 905                                             struct ieee80211_hdr_4addr *header,
 906                                             u8 *body, int body_len)
 907 {
 908         u16 buff;
 909         int len =  MGMT_FRAME_BODY_OFFSET + body_len;
 910
 911         if (!(buff = find_tx_buff(priv, len)))
 912                 return;
 913
 914         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 915         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 916         priv->tx_buff_tail += len;
 917         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 918 }
 919
 920 static void fast_rx_path(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
 921                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 922 {
 923         /* fast path: unfragmented packet copy directly into skbuf */
 924         u8 mac4[6];
 925         struct sk_buff  *skb;
 926         unsigned char *skbp;
 927
 928         /* get the final, mac 4 header field, this tells us encapsulation */
 929         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 930         msdu_size -= 6;
 931
 932         if (priv->do_rx_crc) {
 933                 crc = crc32_le(crc, mac4, 6);
 934                 msdu_size -= 4;
 935         }
 936
 937         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 938                 priv->stats.rx_dropped++;
 939                 return;
 940         }
 941
 942         skb_reserve(skb, 2);
 943         skbp = skb_put(skb, msdu_size + 12);
 944         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 945
 946         if (priv->do_rx_crc) {
 947                 u32 netcrc;
 948                 crc = crc32_le(crc, skbp + 12, msdu_size);
 949                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 950                 if ((crc ^ 0xffffffff) != netcrc) {
 951                         priv->stats.rx_crc_errors++;
 952                         dev_kfree_skb(skb);
 953                         return;
 954                 }
 955         }
 956
 957         memcpy(skbp, header->addr1, 6); /* destination address */
 958         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 959                 memcpy(&skbp[6], header->addr3, 6);
 960         else
 961                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 962
 963         priv->dev->last_rx=jiffies;
 964         skb->dev = priv->dev;
 965         skb->protocol = eth_type_trans(skb, priv->dev);
 966         skb->ip_summed = CHECKSUM_NONE;
 967         netif_rx(skb);
 968         priv->stats.rx_bytes += 12 + msdu_size;
 969         priv->stats.rx_packets++;
 970 }
 971
 972 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 973    It doesn't matter that this is slow: it is only used to proble the first few packets. */
 974 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 975 {
 976         int i = msdu_size - 4;
 977         u32 netcrc, crc = 0xffffffff;
 978
 979         if (msdu_size < 4)
 980                 return 0;
 981
 982         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 983
 984         atmel_writeAR(priv->dev, packet_loc);
 985         while (i--) {
 986                 u8 octet = atmel_read8(priv->dev, DR);
 987                 crc = crc32_le(crc, &octet, 1);
 988         }
 989
 990         return (crc ^ 0xffffffff) == netcrc;
 991 }
 992
 993 static void frag_rx_path(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
 994                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
 995 {
 996         u8 mac4[6];
 997         u8 source[6];
 998         struct sk_buff *skb;
 999
1000         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
1001                 memcpy(source, header->addr3, 6);
1002         else
1003                 memcpy(source, header->addr2, 6);
1004
1005         rx_packet_loc += 24; /* skip header */
1006
1007         if (priv->do_rx_crc)
1008                 msdu_size -= 4;
1009
1010         if (frag_no == 0) { /* first fragment */
1011                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
1012                 msdu_size -= 6;
1013                 rx_packet_loc += 6;
1014
1015                 if (priv->do_rx_crc)
1016                         crc = crc32_le(crc, mac4, 6);
1017
1018                 priv->frag_seq = seq_no;
1019                 priv->frag_no = 1;
1020                 priv->frag_len = msdu_size;
1021                 memcpy(priv->frag_source, source, 6);
1022                 memcpy(&priv->rx_buf[6], source, 6);
1023                 memcpy(priv->rx_buf, header->addr1, 6);
1024
1025                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1026
1027                 if (priv->do_rx_crc) {
1028                         u32 netcrc;
1029                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1030                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1031                         if ((crc ^ 0xffffffff) != netcrc) {
1032                                 priv->stats.rx_crc_errors++;
1033                                 memset(priv->frag_source, 0xff, 6);
1034                         }
1035                 }
1036
1037         } else if (priv->frag_no == frag_no &&
1038                    priv->frag_seq == seq_no &&
1039                    memcmp(priv->frag_source, source, 6) == 0) {
1040
1041                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1042                                    rx_packet_loc, msdu_size);
1043                 if (priv->do_rx_crc) {
1044                         u32 netcrc;
1045                         crc = crc32_le(crc,
1046                                        &priv->rx_buf[12 + priv->frag_len],
1047                                        msdu_size);
1048                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1049                         if ((crc ^ 0xffffffff) != netcrc) {
1050                                 priv->stats.rx_crc_errors++;
1051                                 memset(priv->frag_source, 0xff, 6);
1052                                 more_frags = 1; /* don't send broken assembly */
1053                         }
1054                 }
1055
1056                 priv->frag_len += msdu_size;
1057                 priv->frag_no++;
1058
1059                 if (!more_frags) { /* last one */
1060                         memset(priv->frag_source, 0xff, 6);
1061                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1062                                 priv->stats.rx_dropped++;
1063                         } else {
1064                                 skb_reserve(skb, 2);
1065                                 memcpy(skb_put(skb, priv->frag_len + 12),
1066                                        priv->rx_buf,
1067                                        priv->frag_len + 12);
1068                                 priv->dev->last_rx = jiffies;
1069                                 skb->dev = priv->dev;
1070                                 skb->protocol = eth_type_trans(skb, priv->dev);
1071                                 skb->ip_summed = CHECKSUM_NONE;
1072                                 netif_rx(skb);
1073                                 priv->stats.rx_bytes += priv->frag_len + 12;
1074                                 priv->stats.rx_packets++;
1075                         }
1076                 }
1077
1078         } else
1079                 priv->wstats.discard.fragment++;
1080 }
1081
1082 static void rx_done_irq(struct atmel_private *priv)
1083 {
1084         int i;
1085         struct ieee80211_hdr_4addr header;
1086
1087         for (i = 0;
1088              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1089                      i < priv->host_info.rx_desc_count;
1090              i++) {
1091
1092                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1093                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1094                 u32 crc = 0xffffffff;
1095
1096                 if (status != RX_STATUS_SUCCESS) {
1097                         if (status == 0xc1) /* determined by experiment */
1098                                 priv->wstats.discard.nwid++;
1099                         else
1100                                 priv->stats.rx_errors++;
1101                         goto next;
1102                 }
1103
1104                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1105                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1106
1107                 if (msdu_size < 30) {
1108                         priv->stats.rx_errors++;
1109                         goto next;
1110                 }
1111
1112                 /* Get header as far as end of seq_ctl */
1113                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1114                 frame_ctl = le16_to_cpu(header.frame_ctl);
1115                 seq_control = le16_to_cpu(header.seq_ctl);
1116
1117                 /* probe for CRC use here if needed  once five packets have arrived with
1118                    the same crc status, we assume we know what's happening and stop probing */
1119                 if (priv->probe_crc) {
1120                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1121                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1122                         } else {
1123                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1124                         }
1125                         if (priv->do_rx_crc) {
1126                                 if (priv->crc_ok_cnt++ > 5)
1127                                         priv->probe_crc = 0;
1128                         } else {
1129                                 if (priv->crc_ko_cnt++ > 5)
1130                                         priv->probe_crc = 0;
1131                         }
1132                 }
1133
1134                 /* don't CRC header when WEP in use */
1135                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1136                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1137                 }
1138                 msdu_size -= 24; /* header */
1139
1140                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1141
1142                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1143                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1144                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1145
1146                         if (!more_fragments && packet_fragment_no == 0 ) {
1147                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1148                         } else {
1149                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1150                                              packet_sequence_no, packet_fragment_no, more_fragments);
1151                         }
1152                 }
1153
1154                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1155                         /* copy rest of packet into buffer */
1156                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1157
1158                         /* we use the same buffer for frag reassembly and control packets */
1159                         memset(priv->frag_source, 0xff, 6);
1160
1161                         if (priv->do_rx_crc) {
1162                                 /* last 4 octets is crc */
1163                                 msdu_size -= 4;
1164                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1165                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1166                                         priv->stats.rx_crc_errors++;
1167                                         goto next;
1168                                 }
1169                         }
1170
1171                         atmel_management_frame(priv, &header, msdu_size,
1172                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1173                 }
1174
1175         next:
1176                 /* release descriptor */
1177                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1178
1179                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1180                         priv->rx_desc_head++;
1181                 else
1182                         priv->rx_desc_head = 0;
1183         }
1184 }
1185
1186 static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1187 {
1188         struct net_device *dev = (struct net_device *) dev_id;
1189         struct atmel_private *priv = netdev_priv(dev);
1190         u8 isr;
1191         int i = -1;
1192         static u8 irq_order[] = {
1193                 ISR_OUT_OF_RANGE,
1194                 ISR_RxCOMPLETE,
1195                 ISR_TxCOMPLETE,
1196                 ISR_RxFRAMELOST,
1197                 ISR_FATAL_ERROR,
1198                 ISR_COMMAND_COMPLETE,
1199                 ISR_IBSS_MERGE,
1200                 ISR_GENERIC_IRQ
1201         };
1202
1203
1204         if (priv->card && priv->present_callback &&
1205             !(*priv->present_callback)(priv->card))
1206                 return IRQ_HANDLED;
1207
1208         /* In this state upper-level code assumes it can mess with
1209            the card unhampered by interrupts which may change register state.
1210            Note that even though the card shouldn't generate interrupts
1211            the inturrupt line may be shared. This allows card setup
1212            to go on without disabling interrupts for a long time. */
1213         if (priv->station_state == STATION_STATE_DOWN)
1214                 return IRQ_NONE;
1215
1216         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1217
1218         while (1) {
1219                 if (!atmel_lock_mac(priv)) {
1220                         /* failed to contact card */
1221                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1222                         return IRQ_HANDLED;
1223                 }
1224
1225                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1226                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1227
1228                 if (!isr) {
1229                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1230                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1231                 }
1232
1233                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1234
1235                 for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
1236                         if (isr & irq_order[i])
1237                                 break;
1238
1239                 if (!atmel_lock_mac(priv)) {
1240                         /* failed to contact card */
1241                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1242                         return IRQ_HANDLED;
1243                 }
1244
1245                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1246                 isr ^= irq_order[i];
1247                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1248                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1249
1250                 switch (irq_order[i]) {
1251
1252                 case ISR_OUT_OF_RANGE:
1253                         if (priv->operating_mode == IW_MODE_INFRA &&
1254                             priv->station_state == STATION_STATE_READY) {
1255                                 priv->station_is_associated = 0;
1256                                 atmel_scan(priv, 1);
1257                         }
1258                         break;
1259
1260                 case ISR_RxFRAMELOST:
1261                         priv->wstats.discard.misc++;
1262                         /* fall through */
1263                 case ISR_RxCOMPLETE:
1264                         rx_done_irq(priv);
1265                         break;
1266
1267                 case ISR_TxCOMPLETE:
1268                         tx_done_irq(priv);
1269                         break;
1270
1271                 case ISR_FATAL_ERROR:
1272                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1273                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1274                         break;
1275
1276                 case ISR_COMMAND_COMPLETE:
1277                         atmel_command_irq(priv);
1278                         break;
1279
1280                 case ISR_IBSS_MERGE:
1281                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1282                                       priv->CurrentBSSID, 6);
1283                         /* The WPA stuff cares about the current AP address */
1284                         if (priv->use_wpa)
1285                                 build_wpa_mib(priv);
1286                         break;
1287                 case ISR_GENERIC_IRQ:
1288                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1289                         break;
1290                 }
1291         }
1292 }
1293
1294
1295 static struct net_device_stats *atmel_get_stats (struct net_device *dev)
1296 {
1297         struct atmel_private *priv = netdev_priv(dev);
1298         return &priv->stats;
1299 }
1300
1301 static struct iw_statistics *atmel_get_wireless_stats (struct net_device *dev)
1302 {
1303         struct atmel_private *priv = netdev_priv(dev);
1304
1305         /* update the link quality here in case we are seeing no beacons
1306            at all to drive the process */
1307         atmel_smooth_qual(priv);
1308
1309         priv->wstats.status = priv->station_state;
1310
1311         if (priv->operating_mode == IW_MODE_INFRA) {
1312                 if (priv->station_state != STATION_STATE_READY) {
1313                         priv->wstats.qual.qual = 0;
1314                         priv->wstats.qual.level = 0;
1315                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1316                                         | IW_QUAL_LEVEL_INVALID);
1317                 }
1318                 priv->wstats.qual.noise = 0;
1319                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1320         } else {
1321                 /* Quality levels cannot be determined in ad-hoc mode,
1322                    because we can 'hear' more that one remote station. */
1323                 priv->wstats.qual.qual = 0;
1324                 priv->wstats.qual.level = 0;
1325                 priv->wstats.qual.noise = 0;
1326                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1327                                         | IW_QUAL_LEVEL_INVALID
1328                                         | IW_QUAL_NOISE_INVALID;
1329                 priv->wstats.miss.beacon = 0;
1330         }
1331
1332         return (&priv->wstats);
1333 }
1334
1335 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1336 {
1337         if ((new_mtu < 68) || (new_mtu > 2312))
1338                 return -EINVAL;
1339         dev->mtu = new_mtu;
1340         return 0;
1341 }
1342
1343 static int atmel_set_mac_address(struct net_device *dev, void *p)
1344 {
1345         struct sockaddr *addr = p;
1346
1347         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1348         return atmel_open(dev);
1349 }
1350
1351 EXPORT_SYMBOL(atmel_open);
1352
1353 int atmel_open (struct net_device *dev)
1354 {
1355         struct atmel_private *priv = netdev_priv(dev);
1356         int i, channel;
1357
1358         /* any scheduled timer is no longer needed and might screw things up.. */
1359         del_timer_sync(&priv->management_timer);
1360
1361         /* Interrupts will not touch the card once in this state... */
1362         priv->station_state = STATION_STATE_DOWN;
1363
1364         if (priv->new_SSID_size) {
1365                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1366                 priv->SSID_size = priv->new_SSID_size;
1367                 priv->new_SSID_size = 0;
1368         }
1369         priv->BSS_list_entries = 0;
1370
1371         priv->AuthenticationRequestRetryCnt = 0;
1372         priv->AssociationRequestRetryCnt = 0;
1373         priv->ReAssociationRequestRetryCnt = 0;
1374         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1375         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1376
1377         priv->site_survey_state = SITE_SURVEY_IDLE;
1378         priv->station_is_associated = 0;
1379
1380         if (!reset_atmel_card(dev))
1381                 return -EAGAIN;
1382
1383         if (priv->config_reg_domain) {
1384                 priv->reg_domain = priv->config_reg_domain;
1385                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1386         } else {
1387                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1388                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1389                         if (priv->reg_domain == channel_table[i].reg_domain)
1390                                 break;
1391                 if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
1392                         priv->reg_domain = REG_DOMAIN_MKK1;
1393                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1394                 }
1395         }
1396
1397         if ((channel = atmel_validate_channel(priv, priv->channel)))
1398                 priv->channel = channel;
1399
1400         /* this moves station_state on.... */
1401         atmel_scan(priv, 1);
1402
1403         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1404         return 0;
1405 }
1406
1407 static int atmel_close (struct net_device *dev)
1408 {
1409         struct atmel_private *priv = netdev_priv(dev);
1410
1411         atmel_enter_state(priv, STATION_STATE_DOWN);
1412
1413         if (priv->bus_type == BUS_TYPE_PCCARD)
1414                 atmel_write16(dev, GCR, 0x0060);
1415         atmel_write16(dev, GCR, 0x0040);
1416         return 0;
1417 }
1418
1419 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1420 {
1421         /* check that channel is OK, if so return zero,
1422            else return suitable default channel */
1423         int i;
1424
1425         for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1426                 if (priv->reg_domain == channel_table[i].reg_domain) {
1427                         if (channel >= channel_table[i].min &&
1428                             channel <= channel_table[i].max)
1429                                 return 0;
1430                         else
1431                                 return channel_table[i].min;
1432                 }
1433         return 0;
1434 }
1435
1436 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1437 {
1438         int i;
1439         char *p = buf;
1440         char *s, *r, *c;
1441
1442         p += sprintf(p, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1443
1444         if (priv->station_state != STATION_STATE_DOWN) {
1445                 p += sprintf(p, "Firmware version:\t%d.%d build %d\nFirmware location:\t",
1446                              priv->host_info.major_version,
1447                              priv->host_info.minor_version,
1448                              priv->host_info.build_version);
1449
1450                 if (priv->card_type != CARD_TYPE_EEPROM)
1451                         p += sprintf(p, "on card\n");
1452                 else if (priv->firmware)
1453                         p += sprintf(p, "%s loaded by host\n", priv->firmware_id);
1454                 else
1455                         p += sprintf(p, "%s loaded by hotplug\n", priv->firmware_id);
1456
1457                 switch(priv->card_type) {
1458                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1459                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1460                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1461                 default: c = "<unknown>";
1462                 }
1463
1464
1465                 r = "<unknown>";
1466                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1467                         if (priv->reg_domain == channel_table[i].reg_domain)
1468                                 r = channel_table[i].name;
1469
1470                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1471                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1472                 p += sprintf(p, "Host CRC checking:\t%s\n",
1473                              priv->do_rx_crc ? "On" : "Off");
1474                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1475                              priv->use_wpa ? "Yes" : "No");
1476         }
1477
1478         switch(priv->station_state) {
1479         case STATION_STATE_SCANNING: s = "Scanning"; break;
1480         case STATION_STATE_JOINNING: s = "Joining"; break;
1481         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1482         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1483         case STATION_STATE_READY: s = "Ready"; break;
1484         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1485         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1486         case STATION_STATE_DOWN: s = "Down"; break;
1487         default: s = "<unknown>";
1488         }
1489
1490         p += sprintf(p, "Current state:\t\t%s\n", s);
1491         return  p - buf;
1492 }
1493
1494 static int atmel_read_proc(char *page, char **start, off_t off,
1495                            int count, int *eof, void *data)
1496 {
1497         struct atmel_private *priv = data;
1498         int len = atmel_proc_output (page, priv);
1499         if (len <= off+count) *eof = 1;
1500         *start = page + off;
1501         len -= off;
1502         if (len>count) len = count;
1503         if (len<0) len = 0;
1504         return len;
1505 }
1506
1507 struct net_device *init_atmel_card( unsigned short irq, int 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 (priv->bus_type == BUS_TYPE_PCI &&
1609             !request_region( dev->base_addr, 64, dev->name )) {
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 wireless. Version %d.%d simon@thekelleys.org.uk\n",
1626                dev->name, DRIVER_MAJOR, DRIVER_MINOR);
1627
1628         SET_MODULE_OWNER(dev);
1629         return dev;
1630
1631  err_out_res:
1632         if (priv->bus_type == BUS_TYPE_PCI)
1633                 release_region( dev->base_addr, 64 );
1634  err_out_irq:
1635         free_irq(dev->irq, dev);
1636  err_out_free:
1637         free_netdev(dev);
1638         return NULL;
1639 }
1640
1641 EXPORT_SYMBOL(init_atmel_card);
1642
1643 void stop_atmel_card(struct net_device *dev, int freeres)
1644 {
1645         struct atmel_private *priv = netdev_priv(dev);
1646
1647         /* put a brick on it... */
1648         if (priv->bus_type == BUS_TYPE_PCCARD)
1649                 atmel_write16(dev, GCR, 0x0060);
1650         atmel_write16(dev, GCR, 0x0040);
1651
1652         del_timer_sync(&priv->management_timer);
1653         unregister_netdev(dev);
1654         remove_proc_entry("driver/atmel", NULL);
1655         free_irq(dev->irq, dev);
1656         if (priv->firmware)
1657                 kfree(priv->firmware);
1658         if (freeres) {
1659                 /* PCMCIA frees this stuff, so only for PCI */
1660                 release_region(dev->base_addr, 64);
1661         }
1662         free_netdev(dev);
1663 }
1664
1665 EXPORT_SYMBOL(stop_atmel_card);
1666
1667 static int atmel_set_essid(struct net_device *dev,
1668                            struct iw_request_info *info,
1669                            struct iw_point *dwrq,
1670                            char *extra)
1671 {
1672         struct atmel_private *priv = netdev_priv(dev);
1673
1674         /* Check if we asked for `any' */
1675         if(dwrq->flags == 0) {
1676                 priv->connect_to_any_BSS = 1;
1677         } else {
1678                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1679
1680                 priv->connect_to_any_BSS = 0;
1681
1682                 /* Check the size of the string */
1683                 if (dwrq->length > MAX_SSID_LENGTH + 1)
1684                          return -E2BIG ;
1685                 if (index != 0)
1686                         return -EINVAL;
1687
1688                 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1689                 priv->new_SSID_size = dwrq->length - 1;
1690         }
1691
1692         return -EINPROGRESS;
1693 }
1694
1695 static int atmel_get_essid(struct net_device *dev,
1696                            struct iw_request_info *info,
1697                            struct iw_point *dwrq,
1698                            char *extra)
1699 {
1700         struct atmel_private *priv = netdev_priv(dev);
1701
1702         /* Get the current SSID */
1703         if (priv->new_SSID_size != 0) {
1704                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1705                 extra[priv->new_SSID_size] = '\0';
1706                 dwrq->length = priv->new_SSID_size + 1;
1707         } else {
1708                 memcpy(extra, priv->SSID, priv->SSID_size);
1709                 extra[priv->SSID_size] = '\0';
1710                 dwrq->length = priv->SSID_size + 1;
1711         }
1712
1713         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1714
1715         return 0;
1716 }
1717
1718 static int atmel_get_wap(struct net_device *dev,
1719                          struct iw_request_info *info,
1720                          struct sockaddr *awrq,
1721                          char *extra)
1722 {
1723         struct atmel_private *priv = netdev_priv(dev);
1724         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1725         awrq->sa_family = ARPHRD_ETHER;
1726
1727         return 0;
1728 }
1729
1730 static int atmel_set_encode(struct net_device *dev,
1731                             struct iw_request_info *info,
1732                             struct iw_point *dwrq,
1733                             char *extra)
1734 {
1735         struct atmel_private *priv = netdev_priv(dev);
1736
1737         /* Basic checking: do we have a key to set ?
1738          * Note : with the new API, it's impossible to get a NULL pointer.
1739          * Therefore, we need to check a key size == 0 instead.
1740          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1741          * when no key is present (only change flags), but older versions
1742          * don't do it. - Jean II */
1743         if (dwrq->length > 0) {
1744                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1745                 int current_index = priv->default_key;
1746                 /* Check the size of the key */
1747                 if (dwrq->length > 13) {
1748                         return -EINVAL;
1749                 }
1750                 /* Check the index (none -> use current) */
1751                 if (index < 0 || index >= 4)
1752                         index = current_index;
1753                 else
1754                         priv->default_key = index;
1755                 /* Set the length */
1756                 if (dwrq->length > 5)
1757                         priv->wep_key_len[index] = 13;
1758                 else
1759                         if (dwrq->length > 0)
1760                                 priv->wep_key_len[index] = 5;
1761                         else
1762                                 /* Disable the key */
1763                                 priv->wep_key_len[index] = 0;
1764                 /* Check if the key is not marked as invalid */
1765                 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1766                         /* Cleanup */
1767                         memset(priv->wep_keys[index], 0, 13);
1768                         /* Copy the key in the driver */
1769                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1770                 }
1771                 /* WE specify that if a valid key is set, encryption
1772                  * should be enabled (user may turn it off later)
1773                  * This is also how "iwconfig ethX key on" works */
1774                 if (index == current_index &&
1775                     priv->wep_key_len[index] > 0) {
1776                         priv->wep_is_on = 1;
1777                         priv->exclude_unencrypted = 1;
1778                         if (priv->wep_key_len[index] > 5) {
1779                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1780                                 priv->encryption_level = 2;
1781                         } else {
1782                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1783                                 priv->encryption_level = 1;
1784                         }
1785                 }
1786         } else {
1787                 /* Do we want to just set the transmit key index ? */
1788                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1789                 if ( index>=0 && index < 4 ) {
1790                         priv->default_key = index;
1791                 } else
1792                         /* Don't complain if only change the mode */
1793                         if(!dwrq->flags & IW_ENCODE_MODE) {
1794                                 return -EINVAL;
1795                         }
1796         }
1797         /* Read the flags */
1798         if(dwrq->flags & IW_ENCODE_DISABLED) {
1799                 priv->wep_is_on = 0;
1800                 priv->encryption_level = 0;
1801                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1802         } else {
1803                 priv->wep_is_on = 1;
1804                 if (priv->wep_key_len[priv->default_key] > 5) {
1805                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1806                         priv->encryption_level = 2;
1807                 } else {
1808                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1809                         priv->encryption_level = 1;
1810                 }
1811         }
1812         if(dwrq->flags & IW_ENCODE_RESTRICTED)
1813                 priv->exclude_unencrypted = 1;
1814         if(dwrq->flags & IW_ENCODE_OPEN)
1815                 priv->exclude_unencrypted = 0;
1816
1817         return -EINPROGRESS;            /* Call commit handler */
1818 }
1819
1820
1821 static int atmel_get_encode(struct net_device *dev,
1822                             struct iw_request_info *info,
1823                             struct iw_point *dwrq,
1824                             char *extra)
1825 {
1826         struct atmel_private *priv = netdev_priv(dev);
1827         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1828
1829         if (!priv->wep_is_on)
1830                 dwrq->flags = IW_ENCODE_DISABLED;
1831         else if (priv->exclude_unencrypted)
1832                 dwrq->flags = IW_ENCODE_RESTRICTED;
1833         else
1834                 dwrq->flags = IW_ENCODE_OPEN;
1835
1836                 /* Which key do we want ? -1 -> tx index */
1837         if (index < 0 || index >= 4)
1838                 index = priv->default_key;
1839         dwrq->flags |= index + 1;
1840         /* Copy the key to the user buffer */
1841         dwrq->length = priv->wep_key_len[index];
1842         if (dwrq->length > 16) {
1843                 dwrq->length=0;
1844         } else {
1845                 memset(extra, 0, 16);
1846                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1847         }
1848
1849         return 0;
1850 }
1851
1852 static int atmel_get_name(struct net_device *dev,
1853                           struct iw_request_info *info,
1854                           char *cwrq,
1855                           char *extra)
1856 {
1857         strcpy(cwrq, "IEEE 802.11-DS");
1858         return 0;
1859 }
1860
1861 static int atmel_set_rate(struct net_device *dev,
1862                           struct iw_request_info *info,
1863                           struct iw_param *vwrq,
1864                           char *extra)
1865 {
1866         struct atmel_private *priv = netdev_priv(dev);
1867
1868         if (vwrq->fixed == 0) {
1869                 priv->tx_rate = 3;
1870                 priv->auto_tx_rate = 1;
1871         } else {
1872                 priv->auto_tx_rate = 0;
1873
1874                 /* Which type of value ? */
1875                 if((vwrq->value < 4) && (vwrq->value >= 0)) {
1876                         /* Setting by rate index */
1877                 priv->tx_rate = vwrq->value;
1878                 } else {
1879                 /* Setting by frequency value */
1880                         switch (vwrq->value) {
1881                         case  1000000: priv->tx_rate = 0; break;
1882                         case  2000000: priv->tx_rate = 1; break;
1883                         case  5500000: priv->tx_rate = 2; break;
1884                         case 11000000: priv->tx_rate = 3; break;
1885                         default: return -EINVAL;
1886                         }
1887                 }
1888         }
1889
1890         return -EINPROGRESS;
1891 }
1892
1893 static int atmel_set_mode(struct net_device *dev,
1894                           struct iw_request_info *info,
1895                           __u32 *uwrq,
1896                           char *extra)
1897 {
1898         struct atmel_private *priv = netdev_priv(dev);
1899
1900         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
1901                 return -EINVAL;
1902
1903         priv->operating_mode = *uwrq;
1904         return -EINPROGRESS;
1905 }
1906
1907 static int atmel_get_mode(struct net_device *dev,
1908                           struct iw_request_info *info,
1909                           __u32 *uwrq,
1910                           char *extra)
1911 {
1912         struct atmel_private *priv = netdev_priv(dev);
1913
1914         *uwrq = priv->operating_mode;
1915         return 0;
1916 }
1917
1918 static int atmel_get_rate(struct net_device *dev,
1919                          struct iw_request_info *info,
1920                          struct iw_param *vwrq,
1921                          char *extra)
1922 {
1923         struct atmel_private *priv = netdev_priv(dev);
1924
1925         if (priv->auto_tx_rate) {
1926                 vwrq->fixed = 0;
1927                 vwrq->value = 11000000;
1928         } else {
1929                 vwrq->fixed = 1;
1930                 switch(priv->tx_rate) {
1931                 case 0: vwrq->value =  1000000; break;
1932                 case 1: vwrq->value =  2000000; break;
1933                 case 2: vwrq->value =  5500000; break;
1934                 case 3: vwrq->value = 11000000; break;
1935                 }
1936         }
1937         return 0;
1938 }
1939
1940 static int atmel_set_power(struct net_device *dev,
1941                            struct iw_request_info *info,
1942                            struct iw_param *vwrq,
1943                            char *extra)
1944 {
1945         struct atmel_private *priv = netdev_priv(dev);
1946         priv->power_mode = vwrq->disabled ? 0 : 1;
1947         return -EINPROGRESS;
1948 }
1949
1950 static int atmel_get_power(struct net_device *dev,
1951                            struct iw_request_info *info,
1952                            struct iw_param *vwrq,
1953                            char *extra)
1954 {
1955         struct atmel_private *priv = netdev_priv(dev);
1956         vwrq->disabled = priv->power_mode ? 0 : 1;
1957         vwrq->flags = IW_POWER_ON;
1958         return 0;
1959 }
1960
1961 static int atmel_set_retry(struct net_device *dev,
1962                            struct iw_request_info *info,
1963                            struct iw_param *vwrq,
1964                            char *extra)
1965 {
1966         struct atmel_private *priv = netdev_priv(dev);
1967
1968         if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
1969                 if(vwrq->flags & IW_RETRY_MAX)
1970                         priv->long_retry = vwrq->value;
1971                 else if (vwrq->flags & IW_RETRY_MIN)
1972                         priv->short_retry = vwrq->value;
1973                 else {
1974                         /* No modifier : set both */
1975                         priv->long_retry = vwrq->value;
1976                         priv->short_retry = vwrq->value;
1977                 }
1978                 return -EINPROGRESS;
1979         }
1980
1981         return -EINVAL;
1982 }
1983
1984 static int atmel_get_retry(struct net_device *dev,
1985                            struct iw_request_info *info,
1986                            struct iw_param *vwrq,
1987                            char *extra)
1988 {
1989         struct atmel_private *priv = netdev_priv(dev);
1990
1991         vwrq->disabled = 0;      /* Can't be disabled */
1992
1993         /* Note : by default, display the min retry number */
1994         if((vwrq->flags & IW_RETRY_MAX)) {
1995                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1996                 vwrq->value = priv->long_retry;
1997         } else {
1998                 vwrq->flags = IW_RETRY_LIMIT;
1999                 vwrq->value = priv->short_retry;
2000                 if(priv->long_retry != priv->short_retry)
2001                         vwrq->flags |= IW_RETRY_MIN;
2002         }
2003
2004         return 0;
2005 }
2006
2007 static int atmel_set_rts(struct net_device *dev,
2008                          struct iw_request_info *info,
2009                          struct iw_param *vwrq,
2010                          char *extra)
2011 {
2012         struct atmel_private *priv = netdev_priv(dev);
2013         int rthr = vwrq->value;
2014
2015         if(vwrq->disabled)
2016                 rthr = 2347;
2017         if((rthr < 0) || (rthr > 2347)) {
2018                 return -EINVAL;
2019         }
2020         priv->rts_threshold = rthr;
2021
2022         return -EINPROGRESS;            /* Call commit handler */
2023 }
2024
2025 static int atmel_get_rts(struct net_device *dev,
2026                          struct iw_request_info *info,
2027                          struct iw_param *vwrq,
2028                          char *extra)
2029 {
2030         struct atmel_private *priv = netdev_priv(dev);
2031
2032         vwrq->value = priv->rts_threshold;
2033         vwrq->disabled = (vwrq->value >= 2347);
2034         vwrq->fixed = 1;
2035
2036         return 0;
2037 }
2038
2039 static int atmel_set_frag(struct net_device *dev,
2040                           struct iw_request_info *info,
2041                           struct iw_param *vwrq,
2042                           char *extra)
2043 {
2044         struct atmel_private *priv = netdev_priv(dev);
2045         int fthr = vwrq->value;
2046
2047         if(vwrq->disabled)
2048                 fthr = 2346;
2049         if((fthr < 256) || (fthr > 2346)) {
2050                 return -EINVAL;
2051         }
2052         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2053         priv->frag_threshold = fthr;
2054
2055         return -EINPROGRESS;            /* Call commit handler */
2056 }
2057
2058 static int atmel_get_frag(struct net_device *dev,
2059                           struct iw_request_info *info,
2060                           struct iw_param *vwrq,
2061                           char *extra)
2062 {
2063         struct atmel_private *priv = netdev_priv(dev);
2064
2065         vwrq->value = priv->frag_threshold;
2066         vwrq->disabled = (vwrq->value >= 2346);
2067         vwrq->fixed = 1;
2068
2069         return 0;
2070 }
2071
2072 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2073                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2074
2075 static int atmel_set_freq(struct net_device *dev,
2076                           struct iw_request_info *info,
2077                           struct iw_freq *fwrq,
2078                           char *extra)
2079 {
2080         struct atmel_private *priv = netdev_priv(dev);
2081         int rc = -EINPROGRESS;          /* Call commit handler */
2082
2083         /* If setting by frequency, convert to a channel */
2084         if((fwrq->e == 1) &&
2085            (fwrq->m >= (int) 241200000) &&
2086            (fwrq->m <= (int) 248700000)) {
2087                 int f = fwrq->m / 100000;
2088                 int c = 0;
2089                 while((c < 14) && (f != frequency_list[c]))
2090                         c++;
2091                 /* Hack to fall through... */
2092                 fwrq->e = 0;
2093                 fwrq->m = c + 1;
2094         }
2095         /* Setting by channel number */
2096         if((fwrq->m > 1000) || (fwrq->e > 0))
2097                 rc = -EOPNOTSUPP;
2098         else {
2099                 int channel = fwrq->m;
2100                 if (atmel_validate_channel(priv, channel) == 0) {
2101                         priv->channel = channel;
2102                 } else {
2103                         rc = -EINVAL;
2104                 }
2105         }
2106         return rc;
2107 }
2108
2109 static int atmel_get_freq(struct net_device *dev,
2110                           struct iw_request_info *info,
2111                           struct iw_freq *fwrq,
2112                           char *extra)
2113 {
2114         struct atmel_private *priv = netdev_priv(dev);
2115
2116         fwrq->m = priv->channel;
2117         fwrq->e = 0;
2118         return 0;
2119 }
2120
2121 static int atmel_set_scan(struct net_device *dev,
2122                           struct iw_request_info *info,
2123                           struct iw_param *vwrq,
2124                           char *extra)
2125 {
2126         struct atmel_private *priv = netdev_priv(dev);
2127         unsigned long flags;
2128
2129         /* Note : you may have realised that, as this is a SET operation,
2130          * this is privileged and therefore a normal user can't
2131          * perform scanning.
2132          * This is not an error, while the device perform scanning,
2133          * traffic doesn't flow, so it's a perfect DoS...
2134          * Jean II */
2135
2136         if (priv->station_state == STATION_STATE_DOWN)
2137                 return -EAGAIN;
2138
2139         /* Timeout old surveys. */
2140         if ((jiffies - priv->last_survey) > (20 * HZ))
2141                 priv->site_survey_state = SITE_SURVEY_IDLE;
2142         priv->last_survey = jiffies;
2143
2144         /* Initiate a scan command */
2145         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2146                 return -EBUSY;
2147
2148         del_timer_sync(&priv->management_timer);
2149         spin_lock_irqsave(&priv->irqlock, flags);
2150
2151         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2152         priv->fast_scan = 0;
2153         atmel_scan(priv, 0);
2154         spin_unlock_irqrestore(&priv->irqlock, flags);
2155
2156         return 0;
2157 }
2158
2159 static int atmel_get_scan(struct net_device *dev,
2160                           struct iw_request_info *info,
2161                           struct iw_point *dwrq,
2162                           char *extra)
2163 {
2164         struct atmel_private *priv = netdev_priv(dev);
2165         int i;
2166         char *current_ev = extra;
2167         struct iw_event iwe;
2168
2169         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2170                 return -EAGAIN;
2171
2172         for(i=0; i<priv->BSS_list_entries; i++) {
2173                 iwe.cmd = SIOCGIWAP;
2174                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2175                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2176                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2177
2178                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2179                 if (iwe.u.data.length > 32)
2180                         iwe.u.data.length = 32;
2181                 iwe.cmd = SIOCGIWESSID;
2182                 iwe.u.data.flags = 1;
2183                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2184
2185                 iwe.cmd = SIOCGIWMODE;
2186                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2187                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2188
2189                 iwe.cmd = SIOCGIWFREQ;
2190                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2191                 iwe.u.freq.e = 0;
2192                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2193
2194                 iwe.cmd = SIOCGIWENCODE;
2195                 if (priv->BSSinfo[i].UsingWEP)
2196                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2197                 else
2198                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2199                 iwe.u.data.length = 0;
2200                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2201
2202         }
2203
2204         /* Length of data */
2205         dwrq->length = (current_ev - extra);
2206         dwrq->flags = 0;
2207
2208         return 0;
2209 }
2210
2211 static int atmel_get_range(struct net_device *dev,
2212                            struct iw_request_info *info,
2213                            struct iw_point *dwrq,
2214                            char *extra)
2215 {
2216         struct atmel_private *priv = netdev_priv(dev);
2217         struct iw_range *range = (struct iw_range *) extra;
2218         int k,i,j;
2219
2220         dwrq->length = sizeof(struct iw_range);
2221         memset(range, 0, sizeof(range));
2222         range->min_nwid = 0x0000;
2223         range->max_nwid = 0x0000;
2224         range->num_channels = 0;
2225         for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2226                 if (priv->reg_domain == channel_table[j].reg_domain) {
2227                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2228                         break;
2229                 }
2230         if (range->num_channels != 0) {
2231                 for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2232                         range->freq[k].i = i; /* List index */
2233                         range->freq[k].m = frequency_list[i-1] * 100000;
2234                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2235                 }
2236                 range->num_frequency = k;
2237         }
2238
2239         range->max_qual.qual = 100;
2240         range->max_qual.level = 100;
2241         range->max_qual.noise = 0;
2242         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2243
2244         range->avg_qual.qual = 50;
2245         range->avg_qual.level = 50;
2246         range->avg_qual.noise = 0;
2247         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2248
2249         range->sensitivity = 0;
2250
2251         range->bitrate[0] =  1000000;
2252         range->bitrate[1] =  2000000;
2253         range->bitrate[2] =  5500000;
2254         range->bitrate[3] = 11000000;
2255         range->num_bitrates = 4;
2256
2257         range->min_rts = 0;
2258         range->max_rts = 2347;
2259         range->min_frag = 256;
2260         range->max_frag = 2346;
2261
2262         range->encoding_size[0] = 5;
2263         range->encoding_size[1] = 13;
2264         range->num_encoding_sizes = 2;
2265         range->max_encoding_tokens = 4;
2266
2267         range->pmp_flags = IW_POWER_ON;
2268         range->pmt_flags = IW_POWER_ON;
2269         range->pm_capa = 0;
2270
2271         range->we_version_source = WIRELESS_EXT;
2272         range->we_version_compiled = WIRELESS_EXT;
2273         range->retry_capa = IW_RETRY_LIMIT ;
2274         range->retry_flags = IW_RETRY_LIMIT;
2275         range->r_time_flags = 0;
2276         range->min_retry = 1;
2277         range->max_retry = 65535;
2278
2279         return 0;
2280 }
2281
2282 static int atmel_set_wap(struct net_device *dev,
2283                          struct iw_request_info *info,
2284                          struct sockaddr *awrq,
2285                          char *extra)
2286 {
2287         struct atmel_private *priv = netdev_priv(dev);
2288         int i;
2289         static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
2290         unsigned long flags;
2291
2292         if (awrq->sa_family != ARPHRD_ETHER)
2293                 return -EINVAL;
2294
2295         if (memcmp(bcast, awrq->sa_data, 6) == 0) {
2296                 del_timer_sync(&priv->management_timer);
2297                 spin_lock_irqsave(&priv->irqlock, flags);
2298                 atmel_scan(priv, 1);
2299                 spin_unlock_irqrestore(&priv->irqlock, flags);
2300                 return 0;
2301         }
2302
2303         for(i=0; i<priv->BSS_list_entries; i++) {
2304                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2305                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2306                                 return -EINVAL;
2307                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2308                                 return -EINVAL;
2309                         } else {
2310                                 del_timer_sync(&priv->management_timer);
2311                                 spin_lock_irqsave(&priv->irqlock, flags);
2312                                 atmel_join_bss(priv, i);
2313                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2314                                 return 0;
2315                         }
2316                 }
2317         }
2318
2319         return -EINVAL;
2320 }
2321
2322 static int atmel_config_commit(struct net_device *dev,
2323                                struct iw_request_info *info,    /* NULL */
2324                                void *zwrq,                      /* NULL */
2325                                char *extra)                     /* NULL */
2326 {
2327         return atmel_open(dev);
2328 }
2329
2330 static const iw_handler         atmel_handler[] =
2331 {
2332         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2333         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2334         (iw_handler) NULL,                      /* SIOCSIWNWID */
2335         (iw_handler) NULL,                      /* SIOCGIWNWID */
2336         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2337         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2338         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2339         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2340         (iw_handler) NULL,                      /* SIOCSIWSENS */
2341         (iw_handler) NULL,                      /* SIOCGIWSENS */
2342         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2343         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2344         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2345         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2346         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2347         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2348         (iw_handler) NULL,                      /* SIOCSIWSPY */
2349         (iw_handler) NULL,                      /* SIOCGIWSPY */
2350         (iw_handler) NULL,                      /* -- hole -- */
2351         (iw_handler) NULL,                      /* -- hole -- */
2352         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2353         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2354         (iw_handler) NULL,                      /* -- hole -- */
2355         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2356         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2357         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2358         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2359         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2360         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2361         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2362         (iw_handler) NULL,                      /* -- hole -- */
2363         (iw_handler) NULL,                      /* -- hole -- */
2364         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2365         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2366         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2367         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2368         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2369         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2370         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2371         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2372         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2373         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2374         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2375         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2376         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2377         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2378 };
2379
2380
2381 static const iw_handler         atmel_private_handler[] =
2382 {
2383         NULL,                           /* SIOCIWFIRSTPRIV */
2384 };
2385
2386 typedef struct atmel_priv_ioctl {
2387         char id[32];
2388         unsigned char __user *data;
2389         unsigned short len;
2390 } atmel_priv_ioctl;
2391
2392
2393 #define ATMELFWL SIOCIWFIRSTPRIV
2394 #define ATMELIDIFC ATMELFWL + 1
2395 #define ATMELRD ATMELFWL + 2
2396 #define ATMELMAGIC 0x51807
2397 #define REGDOMAINSZ 20
2398
2399 static const struct iw_priv_args atmel_private_args[] = {
2400 /*{ cmd,         set_args,                            get_args, name } */
2401   { ATMELFWL, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof (atmel_priv_ioctl), IW_PRIV_TYPE_NONE, "atmelfwl" },
2402   { ATMELIDIFC, IW_PRIV_TYPE_NONE, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "atmelidifc" },
2403   { ATMELRD, IW_PRIV_TYPE_CHAR | REGDOMAINSZ, IW_PRIV_TYPE_NONE, "regdomain" },
2404 };
2405
2406 static const struct iw_handler_def      atmel_handler_def =
2407 {
2408         .num_standard   = sizeof(atmel_handler)/sizeof(iw_handler),
2409         .num_private    = sizeof(atmel_private_handler)/sizeof(iw_handler),
2410         .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
2411         .standard       = (iw_handler *) atmel_handler,
2412         .private        = (iw_handler *) atmel_private_handler,
2413         .private_args   = (struct iw_priv_args *) atmel_private_args,
2414         .get_wireless_stats = atmel_get_wireless_stats
2415 };
2416
2417 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2418 {
2419         int i, rc = 0;
2420         struct atmel_private *priv = netdev_priv(dev);
2421         atmel_priv_ioctl com;
2422         struct iwreq *wrq = (struct iwreq *) rq;
2423         unsigned char *new_firmware;
2424         char domain[REGDOMAINSZ+1];
2425
2426         switch (cmd) {
2427         case ATMELIDIFC:
2428                 wrq->u.param.value = ATMELMAGIC;
2429                 break;
2430
2431         case ATMELFWL:
2432                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2433                         rc = -EFAULT;
2434                         break;
2435                 }
2436
2437                 if (!capable(CAP_NET_ADMIN)) {
2438                         rc = -EPERM;
2439                         break;
2440                 }
2441
2442                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2443                         rc = -ENOMEM;
2444                         break;
2445                 }
2446
2447                 if (copy_from_user(new_firmware, com.data, com.len)) {
2448                         kfree(new_firmware);
2449                         rc = -EFAULT;
2450                         break;
2451                 }
2452
2453                 if (priv->firmware)
2454                         kfree(priv->firmware);
2455
2456                 priv->firmware = new_firmware;
2457                 priv->firmware_length = com.len;
2458                 strncpy(priv->firmware_id, com.id, 31);
2459                 priv->firmware_id[31] = '\0';
2460                 break;
2461
2462         case ATMELRD:
2463                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2464                         rc = -EFAULT;
2465                         break;
2466                 }
2467
2468                 if (!capable(CAP_NET_ADMIN)) {
2469                         rc = -EPERM;
2470                         break;
2471                 }
2472
2473                 domain[REGDOMAINSZ] = 0;
2474                 rc = -EINVAL;
2475                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2476                         /* strcasecmp doesn't exist in the library */
2477                         char *a = channel_table[i].name;
2478                         char *b = domain;
2479                         while (*a) {
2480                                 char c1 = *a++;
2481                                 char c2 = *b++;
2482                                 if (tolower(c1) != tolower(c2))
2483                                         break;
2484                         }
2485                         if (!*a && !*b) {
2486                                 priv->config_reg_domain = channel_table[i].reg_domain;
2487                                 rc = 0;
2488                         }
2489                 }
2490
2491                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2492                         rc = atmel_open(dev);
2493                 break;
2494
2495         default:
2496                 rc = -EOPNOTSUPP;
2497         }
2498
2499         return rc;
2500 }
2501
2502 struct auth_body {
2503         u16 alg;
2504         u16 trans_seq;
2505         u16 status;
2506         u8 el_id;
2507         u8 chall_text_len;
2508         u8 chall_text[253];
2509 };
2510
2511 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2512 {
2513         int old_state = priv->station_state;
2514
2515         if (new_state == old_state)
2516                 return;
2517
2518         priv->station_state = new_state;
2519
2520         if (new_state == STATION_STATE_READY) {
2521                 netif_start_queue(priv->dev);
2522                 netif_carrier_on(priv->dev);
2523         }
2524
2525         if (old_state == STATION_STATE_READY) {
2526                 netif_carrier_off(priv->dev);
2527                 if (netif_running(priv->dev))
2528                         netif_stop_queue(priv->dev);
2529                 priv->last_beacon_timestamp = 0;
2530         }
2531 }
2532
2533 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2534 {
2535         struct {
2536                 u8 BSSID[6];
2537                 u8 SSID[MAX_SSID_LENGTH];
2538                 u8 scan_type;
2539                 u8 channel;
2540                 u16 BSS_type;
2541                 u16 min_channel_time;
2542                 u16 max_channel_time;
2543                 u8 options;
2544                 u8 SSID_size;
2545         } cmd;
2546
2547         memset(cmd.BSSID, 0xff, 6);
2548
2549         if (priv->fast_scan) {
2550                 cmd.SSID_size = priv->SSID_size;
2551                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2552                 cmd.min_channel_time = cpu_to_le16(10);
2553                 cmd.max_channel_time = cpu_to_le16(50);
2554         } else {
2555                 priv->BSS_list_entries = 0;
2556                 cmd.SSID_size = 0;
2557                 cmd.min_channel_time = cpu_to_le16(10);
2558                 cmd.max_channel_time = cpu_to_le16(120);
2559         }
2560
2561         cmd.options = 0;
2562
2563         if (!specific_ssid)
2564                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2565
2566         cmd.channel = (priv->channel & 0x7f);
2567         cmd.scan_type = SCAN_TYPE_ACTIVE;
2568         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2569                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2570
2571         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2572
2573         /* This must come after all hardware access to avoid being messed up
2574            by stuff happening in interrupt context after we leave STATE_DOWN */
2575         atmel_enter_state(priv, STATION_STATE_SCANNING);
2576 }
2577
2578 static void join(struct atmel_private *priv, int type)
2579 {
2580         struct {
2581                 u8 BSSID[6];
2582                 u8 SSID[MAX_SSID_LENGTH];
2583                 u8 BSS_type; /* this is a short in a scan command - weird */
2584                 u8 channel;
2585                 u16 timeout;
2586                 u8 SSID_size;
2587                 u8 reserved;
2588         } cmd;
2589
2590         cmd.SSID_size = priv->SSID_size;
2591         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2592         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2593         cmd.channel = (priv->channel & 0x7f);
2594         cmd.BSS_type = type;
2595         cmd.timeout = cpu_to_le16(2000);
2596
2597         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2598 }
2599
2600
2601 static void start(struct atmel_private *priv, int type)
2602 {
2603         struct {
2604                 u8 BSSID[6];
2605                 u8 SSID[MAX_SSID_LENGTH];
2606                 u8 BSS_type;
2607                 u8 channel;
2608                 u8 SSID_size;
2609                 u8 reserved[3];
2610         } cmd;
2611
2612         cmd.SSID_size = priv->SSID_size;
2613         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2614         memcpy(cmd.BSSID, priv->BSSID, 6);
2615         cmd.BSS_type = type;
2616         cmd.channel = (priv->channel & 0x7f);
2617
2618         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2619 }
2620
2621 static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 channel)
2622 {
2623         int rejoin = 0;
2624         int new = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ?
2625                 SHORT_PREAMBLE : LONG_PREAMBLE;
2626
2627         if (priv->preamble != new) {
2628                 priv->preamble = new;
2629                 rejoin = 1;
2630                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2631         }
2632
2633         if (priv->channel != channel) {
2634                 priv->channel = channel;
2635                 rejoin = 1;
2636                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2637         }
2638
2639         if (rejoin) {
2640                 priv->station_is_associated = 0;
2641                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2642
2643                 if (priv->operating_mode == IW_MODE_INFRA)
2644                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2645                 else
2646                         join(priv, BSS_TYPE_AD_HOC);
2647         }
2648 }
2649
2650
2651 static void send_authentication_request(struct atmel_private *priv, u8 *challenge, int challenge_len)
2652 {
2653         struct ieee80211_hdr_4addr header;
2654         struct auth_body auth;
2655
2656         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2657         header.duration_id      = cpu_to_le16(0x8000);
2658         header.seq_ctl = 0;
2659         memcpy(header.addr1, priv->CurrentBSSID, 6);
2660         memcpy(header.addr2, priv->dev->dev_addr, 6);
2661         memcpy(header.addr3, priv->CurrentBSSID, 6);
2662
2663         if (priv->wep_is_on) {
2664                 auth.alg = cpu_to_le16(C80211_MGMT_AAN_SHAREDKEY);
2665                 /* no WEP for authentication frames with TrSeqNo 1 */
2666                 if (priv->CurrentAuthentTransactionSeqNum != 1)
2667                         header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2668         } else {
2669                 auth.alg = cpu_to_le16(C80211_MGMT_AAN_OPENSYSTEM);
2670         }
2671
2672         auth.status = 0;
2673         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2674         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2675         priv->CurrentAuthentTransactionSeqNum += 2;
2676
2677         if (challenge_len != 0) {
2678                 auth.el_id = 16; /* challenge_text */
2679                 auth.chall_text_len = challenge_len;
2680                 memcpy(auth.chall_text, challenge, challenge_len);
2681                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2682         } else {
2683                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2684         }
2685 }
2686
2687 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2688 {
2689         u8 *ssid_el_p;
2690         int bodysize;
2691         struct ieee80211_hdr_4addr header;
2692         struct ass_req_format {
2693                 u16 capability;
2694                 u16 listen_interval;
2695                 u8 ap[6]; /* nothing after here directly accessible */
2696                 u8 ssid_el_id;
2697                 u8 ssid_len;
2698                 u8 ssid[MAX_SSID_LENGTH];
2699                 u8 sup_rates_el_id;
2700                 u8 sup_rates_len;
2701                 u8 rates[4];
2702         } body;
2703
2704         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2705                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2706         header.duration_id = cpu_to_le16(0x8000);
2707         header.seq_ctl = 0;
2708
2709         memcpy(header.addr1, priv->CurrentBSSID, 6);
2710         memcpy(header.addr2, priv->dev->dev_addr, 6);
2711         memcpy(header.addr3, priv->CurrentBSSID, 6);
2712
2713         body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
2714         if (priv->wep_is_on)
2715                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
2716         if (priv->preamble == SHORT_PREAMBLE)
2717                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
2718
2719         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2720
2721         /* current AP address - only in reassoc frame */
2722         if (is_reassoc) {
2723                 memcpy(body.ap,  priv->CurrentBSSID, 6);
2724                 ssid_el_p = (u8 *)&body.ssid_el_id;
2725                 bodysize = 18 + priv->SSID_size;
2726         } else {
2727                 ssid_el_p = (u8 *)&body.ap[0];
2728                 bodysize = 12 + priv->SSID_size;
2729         }
2730
2731         ssid_el_p[0]= C80211_MGMT_ElementID_SSID;
2732         ssid_el_p[1] = priv->SSID_size;
2733         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2734         ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
2735         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2736         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2737
2738         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2739 }
2740
2741 static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee80211_hdr_4addr *header)
2742 {
2743         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2744                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2745         else
2746                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2747 }
2748
2749 static int retrieve_bss(struct atmel_private *priv)
2750 {
2751         int i;
2752         int max_rssi = -128;
2753         int max_index = -1;
2754
2755         if (priv->BSS_list_entries == 0)
2756                 return -1;
2757
2758         if (priv->connect_to_any_BSS) {
2759                 /* Select a BSS with the max-RSSI but of the same type and of the same WEP mode
2760                    and that it is not marked as 'bad' (i.e. we had previously failed to connect to
2761                    this BSS with the settings that we currently use) */
2762                 priv->current_BSS = 0;
2763                 for(i=0; i<priv->BSS_list_entries; i++) {
2764                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2765                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2766                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2767                             !(priv->BSSinfo[i].channel & 0x80)) {
2768                                 max_rssi = priv->BSSinfo[i].RSSI;
2769                                 priv->current_BSS = max_index = i;
2770                         }
2771
2772                 }
2773                 return max_index;
2774         }
2775
2776         for(i=0; i<priv->BSS_list_entries; i++) {
2777                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2778                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2779                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2780                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2781                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2782                                 max_rssi = priv->BSSinfo[i].RSSI;
2783                                 max_index = i;
2784                         }
2785                 }
2786         }
2787         return max_index;
2788 }
2789
2790
2791 static void store_bss_info(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
2792                            u16 capability, u16 beacon_period, u8 channel, u8 rssi,
2793                            u8 ssid_len, u8 *ssid, int is_beacon)
2794 {
2795         u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
2796         int i, index;
2797
2798         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2799                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2800                         index = i;
2801
2802         /* If we process a probe and an entry from this BSS exists
2803            we will update the BSS entry with the info from this BSS.
2804            If we process a beacon we will only update RSSI */
2805
2806         if (index == -1) {
2807                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2808                         return;
2809                 index = priv->BSS_list_entries++;
2810                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2811                 priv->BSSinfo[index].RSSI = rssi;
2812         } else {
2813                 if (rssi > priv->BSSinfo[index].RSSI)
2814                         priv->BSSinfo[index].RSSI = rssi;
2815                 if (is_beacon)
2816                         return;
2817         }
2818
2819         priv->BSSinfo[index].channel = channel;
2820         priv->BSSinfo[index].beacon_period = beacon_period;
2821         priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
2822         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2823         priv->BSSinfo[index].SSIDsize = ssid_len;
2824
2825         if (capability & C80211_MGMT_CAPABILITY_IBSS)
2826                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
2827         else if (capability & C80211_MGMT_CAPABILITY_ESS)
2828                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
2829
2830         priv->BSSinfo[index].preamble = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ?
2831                 SHORT_PREAMBLE : LONG_PREAMBLE;
2832 }
2833
2834 static void authenticate(struct atmel_private *priv, u16 frame_len)
2835 {
2836         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
2837         u16 status = le16_to_cpu(auth->status);
2838         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
2839
2840         if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) {
2841                 /* no WEP */
2842                 if (priv->station_was_associated) {
2843                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2844                         send_association_request(priv, 1);
2845                         return;
2846                 } else {
2847                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2848                         send_association_request(priv, 0);
2849                         return;
2850                 }
2851         }
2852
2853         if (status == C80211_MGMT_SC_Success && priv->wep_is_on) {
2854                 /* WEP */
2855                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
2856                         return;
2857
2858                 if (trans_seq_no == 0x0002 &&
2859                     auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
2860                         send_authentication_request(priv, auth->chall_text, auth->chall_text_len);
2861                         return;
2862                 }
2863
2864                 if (trans_seq_no == 0x0004) {
2865                         if(priv->station_was_associated) {
2866                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2867                                 send_association_request(priv, 1);
2868                                 return;
2869                         } else {
2870                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2871                                 send_association_request(priv, 0);
2872                                 return;
2873                         }
2874                 }
2875         }
2876
2877         if (status == C80211_MGMT_SC_AuthAlgNotSupported && priv->connect_to_any_BSS) {
2878                 int bss_index;
2879
2880                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2881
2882                 if ((bss_index  = retrieve_bss(priv)) != -1) {
2883                         atmel_join_bss(priv, bss_index);
2884                         return;
2885                 }
2886         }
2887
2888
2889         priv->AuthenticationRequestRetryCnt = 0;
2890         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2891         priv->station_is_associated = 0;
2892 }
2893
2894 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
2895 {
2896         struct ass_resp_format {
2897                 u16 capability;
2898                 u16 status;
2899                 u16 ass_id;
2900                 u8 el_id;
2901                 u8 length;
2902                 u8 rates[4];
2903         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
2904
2905         u16 status = le16_to_cpu(ass_resp->status);
2906         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
2907         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
2908
2909         if (frame_len < 8 + rates_len)
2910                 return;
2911
2912         if (status == C80211_MGMT_SC_Success) {
2913                 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
2914                         priv->AssociationRequestRetryCnt = 0;
2915                 else
2916                         priv->ReAssociationRequestRetryCnt = 0;
2917
2918                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
2919                 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
2920                 if (priv->power_mode == 0) {
2921                         priv->listen_interval = 1;
2922                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2923                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2924                 } else {
2925                         priv->listen_interval = 2;
2926                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
2927                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
2928                 }
2929
2930                 priv->station_is_associated = 1;
2931                 priv->station_was_associated = 1;
2932                 atmel_enter_state(priv, STATION_STATE_READY);
2933                 return;
2934         }
2935
2936         if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
2937             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2938             status != C80211_MGMT_SC_SupportCapabilities &&
2939             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2940                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2941                 priv->AssociationRequestRetryCnt++;
2942                 send_association_request(priv, 0);
2943                 return;
2944         }
2945
2946         if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
2947             status != C80211_MGMT_SC_AssDeniedBSSRate &&
2948             status != C80211_MGMT_SC_SupportCapabilities &&
2949             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2950                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2951                 priv->ReAssociationRequestRetryCnt++;
2952                 send_association_request(priv, 1);
2953                 return;
2954         }
2955
2956         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
2957         priv->station_is_associated = 0;
2958
2959         if(priv->connect_to_any_BSS) {
2960                 int bss_index;
2961                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2962
2963                 if ((bss_index = retrieve_bss(priv)) != -1)
2964                         atmel_join_bss(priv, bss_index);
2965
2966         }
2967 }
2968
2969 void atmel_join_bss(struct atmel_private *priv, int bss_index)
2970 {
2971         struct bss_info *bss =  &priv->BSSinfo[bss_index];
2972
2973         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
2974         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
2975
2976         /* The WPA stuff cares about the current AP address */
2977         if (priv->use_wpa)
2978                 build_wpa_mib(priv);
2979
2980         /* When switching to AdHoc turn OFF Power Save if needed */
2981
2982         if (bss->BSStype == IW_MODE_ADHOC &&
2983             priv->operating_mode != IW_MODE_ADHOC &&
2984             priv->power_mode) {
2985                 priv->power_mode = 0;
2986                 priv->listen_interval = 1;
2987                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
2988                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2989         }
2990
2991         priv->operating_mode = bss->BSStype;
2992         priv->channel = bss->channel & 0x7f;
2993         priv->beacon_period = bss->beacon_period;
2994
2995         if (priv->preamble != bss->preamble) {
2996                 priv->preamble = bss->preamble;
2997                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
2998         }
2999
3000         if (!priv->wep_is_on && bss->UsingWEP) {
3001                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3002                 priv->station_is_associated = 0;
3003                 return;
3004         }
3005
3006         if (priv->wep_is_on && !bss->UsingWEP) {
3007                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3008                 priv->station_is_associated = 0;
3009                 return;
3010         }
3011
3012         atmel_enter_state(priv, STATION_STATE_JOINNING);
3013
3014         if (priv->operating_mode == IW_MODE_INFRA)
3015                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3016         else
3017                 join(priv, BSS_TYPE_AD_HOC);
3018 }
3019
3020
3021 static void restart_search(struct atmel_private *priv)
3022 {
3023         int bss_index;
3024
3025         if (!priv->connect_to_any_BSS) {
3026                 atmel_scan(priv, 1);
3027         } else {
3028                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3029
3030                 if ((bss_index = retrieve_bss(priv)) != -1)
3031                         atmel_join_bss(priv, bss_index);
3032                 else
3033                         atmel_scan(priv, 0);
3034
3035         }
3036 }
3037
3038 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3039 {
3040         u8 old = priv->wstats.qual.level;
3041         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3042
3043         switch (priv->firmware_type) {
3044                 case ATMEL_FW_TYPE_502E:
3045                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3046                         break;
3047                 default:
3048                         break;
3049         }
3050
3051         rssi = rssi * 100 / max_rssi;
3052         if((rssi + old) % 2)
3053                 priv->wstats.qual.level =  ((rssi + old)/2) + 1;
3054         else
3055                 priv->wstats.qual.level =  ((rssi + old)/2);
3056         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3057         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3058 }
3059
3060 static void atmel_smooth_qual(struct atmel_private *priv)
3061 {
3062         unsigned long time_diff = (jiffies - priv->last_qual)/HZ;
3063         while (time_diff--) {
3064                 priv->last_qual += HZ;
3065                 priv->wstats.qual.qual = priv->wstats.qual.qual/2;
3066                 priv->wstats.qual.qual +=
3067                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3068                 priv->beacons_this_sec = 0;
3069         }
3070         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3071         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3072 }
3073
3074 /* deals with incoming managment frames. */
3075 static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr_4addr *header,
3076                       u16 frame_len, u8 rssi)
3077 {
3078         u16 subtype;
3079
3080         switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE) {
3081         case C80211_SUBTYPE_MGMT_BEACON :
3082         case C80211_SUBTYPE_MGMT_ProbeResponse:
3083
3084                 /* beacon frame has multiple variable-length fields -
3085                    never let an engineer loose with a data structure design. */
3086                 {
3087                         struct beacon_format {
3088                                 u64 timestamp;
3089                                 u16 interval;
3090                                 u16 capability;
3091                                 u8 ssid_el_id;
3092                                 u8 ssid_length;
3093                                 /* ssid here */
3094                                 u8 rates_el_id;
3095                                 u8 rates_length;
3096                                 /* rates here */
3097                                 u8 ds_el_id;
3098                                 u8 ds_length;
3099                                 /* ds here */
3100                         } *beacon = (struct beacon_format *)priv->rx_buf;
3101
3102                         u8 channel, rates_length, ssid_length;
3103                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3104                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3105                         u16 capability = le16_to_cpu(beacon->capability);
3106                         u8 *beaconp = priv->rx_buf;
3107                         ssid_length = beacon->ssid_length;
3108                         /* this blows chunks. */
3109                         if (frame_len < 14 || frame_len < ssid_length + 15)
3110                                 return;
3111                         rates_length = beaconp[beacon->ssid_length + 15];
3112                         if (frame_len < ssid_length + rates_length + 18)
3113                                 return;
3114                         if (ssid_length >  MAX_SSID_LENGTH)
3115                                 return;
3116                         channel = beaconp[ssid_length + rates_length + 18];
3117
3118                         if (priv->station_state == STATION_STATE_READY) {
3119                                 smooth_rssi(priv, rssi);
3120                                 if (is_frame_from_current_bss(priv, header)) {
3121                                         priv->beacons_this_sec++;
3122                                         atmel_smooth_qual(priv);
3123                                         if (priv->last_beacon_timestamp) {
3124                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3125                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3126                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3127                                                 if (beacons > 1)
3128                                                         priv->wstats.miss.beacon += beacons - 1;
3129                                         }
3130                                         priv->last_beacon_timestamp = timestamp;
3131                                         handle_beacon_probe(priv, capability, channel);
3132                                 }
3133                         }
3134
3135                         if (priv->station_state == STATION_STATE_SCANNING )
3136                                 store_bss_info(priv, header, capability, beacon_interval, channel,
3137                                                rssi, ssid_length, &beacon->rates_el_id,
3138                                                subtype == C80211_SUBTYPE_MGMT_BEACON) ;
3139                 }
3140                 break;
3141
3142         case C80211_SUBTYPE_MGMT_Authentication:
3143
3144                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3145                         authenticate(priv, frame_len);
3146
3147                 break;
3148
3149         case C80211_SUBTYPE_MGMT_ASS_RESPONSE:
3150         case C80211_SUBTYPE_MGMT_REASS_RESPONSE:
3151
3152                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3153                     priv->station_state == STATION_STATE_REASSOCIATING)
3154                         associate(priv, frame_len, subtype);
3155
3156                 break;
3157
3158         case C80211_SUBTYPE_MGMT_DISASSOSIATION:
3159                 if (priv->station_is_associated &&
3160                     priv->operating_mode == IW_MODE_INFRA &&
3161                     is_frame_from_current_bss(priv, header)) {
3162                         priv->station_was_associated = 0;
3163                         priv->station_is_associated = 0;
3164
3165                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3166                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3167                 }
3168
3169                 break;
3170
3171         case C80211_SUBTYPE_MGMT_Deauthentication:
3172                 if (priv->operating_mode == IW_MODE_INFRA &&
3173                     is_frame_from_current_bss(priv, header)) {
3174                         priv->station_was_associated = 0;
3175
3176                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3177                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3178                 }
3179
3180                 break;
3181         }
3182 }
3183
3184 /* run when timer expires */
3185 static void atmel_management_timer(u_long a)
3186 {
3187   struct net_device *dev = (struct net_device *) a;
3188   struct atmel_private *priv = netdev_priv(dev);
3189   unsigned long flags;
3190
3191   /* Check if the card has been yanked. */
3192   if (priv->card && priv->present_callback &&
3193       !(*priv->present_callback)(priv->card))
3194           return;
3195
3196   spin_lock_irqsave(&priv->irqlock, flags);
3197
3198   switch (priv->station_state) {
3199
3200   case STATION_STATE_AUTHENTICATING:
3201           if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3202                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3203                   priv->station_is_associated = 0;
3204                   priv->AuthenticationRequestRetryCnt = 0;
3205                   restart_search(priv);
3206           } else {
3207                   priv->AuthenticationRequestRetryCnt++;
3208                   priv->CurrentAuthentTransactionSeqNum = 0x0001;
3209                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3210                   send_authentication_request(priv, NULL, 0);
3211           }
3212
3213           break;
3214
3215   case STATION_STATE_ASSOCIATING:
3216           if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3217                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3218                   priv->station_is_associated = 0;
3219                   priv->AssociationRequestRetryCnt = 0;
3220                   restart_search(priv);
3221           } else {
3222                   priv->AssociationRequestRetryCnt++;
3223                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3224                   send_association_request(priv, 0);
3225           }
3226
3227           break;
3228
3229   case STATION_STATE_REASSOCIATING:
3230           if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3231                   atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3232                   priv->station_is_associated = 0;
3233                   priv->ReAssociationRequestRetryCnt = 0;
3234                   restart_search(priv);
3235           } else {
3236                   priv->ReAssociationRequestRetryCnt++;
3237                   mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3238                   send_association_request(priv, 1);
3239           }
3240
3241           break;
3242
3243   default:
3244           break;
3245   }
3246
3247   spin_unlock_irqrestore(&priv->irqlock, flags);
3248 }
3249
3250 static void atmel_command_irq(struct atmel_private *priv)
3251 {
3252         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3253         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3254         int fast_scan;
3255
3256         if (status == CMD_STATUS_IDLE ||
3257             status == CMD_STATUS_IN_PROGRESS)
3258                 return;
3259
3260         switch (command){
3261
3262         case CMD_Start:
3263                 if (status == CMD_STATUS_COMPLETE) {
3264                         priv->station_was_associated = priv->station_is_associated;
3265                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3266                                       (u8 *)priv->CurrentBSSID, 6);
3267                         atmel_enter_state(priv, STATION_STATE_READY);
3268                 }
3269                 break;
3270
3271         case CMD_Scan:
3272                 fast_scan = priv->fast_scan;
3273                 priv->fast_scan = 0;
3274
3275                 if (status != CMD_STATUS_COMPLETE) {
3276                         atmel_scan(priv, 1);
3277                 } else {
3278                         int bss_index = retrieve_bss(priv);
3279                         if (bss_index != -1) {
3280                                 atmel_join_bss(priv, bss_index);
3281                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3282                                    priv->SSID_size != 0) {
3283                                 start(priv, BSS_TYPE_AD_HOC);
3284                         } else {
3285                                 priv->fast_scan = !fast_scan;
3286                                 atmel_scan(priv, 1);
3287                         }
3288                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3289                 }
3290                 break;
3291
3292         case CMD_SiteSurvey:
3293                 priv->fast_scan = 0;
3294
3295                 if (status != CMD_STATUS_COMPLETE)
3296                         return;
3297
3298                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3299                 if (priv->station_is_associated) {
3300                         atmel_enter_state(priv, STATION_STATE_READY);
3301                 } else {
3302                         atmel_scan(priv, 1);
3303                 }
3304                 break;
3305
3306         case CMD_Join:
3307                 if (status == CMD_STATUS_COMPLETE) {
3308                         if (priv->operating_mode == IW_MODE_ADHOC) {
3309                                 priv->station_was_associated = priv->station_is_associated;
3310                                 atmel_enter_state(priv, STATION_STATE_READY);
3311                         } else {
3312                                 priv->AuthenticationRequestRetryCnt = 0;
3313                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3314
3315                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3316                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3317                                 send_authentication_request(priv, NULL, 0);
3318                         }
3319                         return;
3320                 }
3321
3322                 atmel_scan(priv, 1);
3323
3324         }
3325 }
3326
3327 static int atmel_wakeup_firmware(struct atmel_private *priv)
3328 {
3329         struct host_info_struct *iface = &priv->host_info;
3330         u16 mr1, mr3;
3331         int i;
3332
3333         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3334                 atmel_set_gcr(priv->dev, GCR_REMAP);
3335
3336         /* wake up on-board processor */
3337         atmel_clear_gcr(priv->dev, 0x0040);
3338         atmel_write16(priv->dev, BSR, BSS_SRAM);
3339
3340         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3341                 mdelay(100);
3342
3343         /* and wait for it */
3344         for (i =  LOOP_RETRY_LIMIT; i; i--) {
3345                 mr1 = atmel_read16(priv->dev, MR1);
3346                 mr3 = atmel_read16(priv->dev, MR3);
3347
3348                 if (mr3 & MAC_BOOT_COMPLETE)
3349                         break;
3350                 if (mr1 & MAC_BOOT_COMPLETE &&
3351                     priv->bus_type == BUS_TYPE_PCCARD)
3352                         break;
3353         }
3354
3355         if (i == 0) {
3356                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3357                 return 0;
3358         }
3359
3360         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3361                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3362                 return 0;
3363         }
3364
3365         /* now check for completion of MAC initialization through
3366            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3367            MAC initialization, check completion status, set interrupt mask,
3368            enables interrupts and calls Tx and Rx initialization functions */
3369
3370         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3371
3372         for (i =  LOOP_RETRY_LIMIT; i; i--) {
3373                 mr1 = atmel_read16(priv->dev, MR1);
3374                 mr3 = atmel_read16(priv->dev, MR3);
3375
3376                 if (mr3 & MAC_INIT_COMPLETE)
3377                         break;
3378                 if (mr1 & MAC_INIT_COMPLETE &&
3379                     priv->bus_type == BUS_TYPE_PCCARD)
3380                         break;
3381         }
3382
3383         if (i == 0) {
3384                 printk(KERN_ALERT "%s: MAC failed to initialise.\n", priv->dev->name);
3385                 return 0;
3386         }
3387
3388         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3389         if ((mr3 & MAC_INIT_COMPLETE) &&
3390             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3391                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3392                 return 0;
3393         }
3394         if ((mr1 & MAC_INIT_COMPLETE) &&
3395             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3396                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3397                 return 0;
3398         }
3399
3400         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3401                            priv->host_info_base, sizeof(*iface));
3402
3403         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3404         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3405         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3406         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3407         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3408         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3409         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3410         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3411         iface->build_version = le16_to_cpu(iface->build_version);
3412         iface->command_pos = le16_to_cpu(iface->command_pos);
3413         iface->major_version = le16_to_cpu(iface->major_version);
3414         iface->minor_version = le16_to_cpu(iface->minor_version);
3415         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3416         iface->mac_status = le16_to_cpu(iface->mac_status);
3417
3418         return 1;
3419 }
3420
3421 /* determine type of memory and MAC address */
3422 static int probe_atmel_card(struct net_device *dev)
3423 {
3424         int rc = 0;
3425         struct atmel_private *priv = netdev_priv(dev);
3426
3427         /* reset pccard */
3428         if (priv->bus_type == BUS_TYPE_PCCARD)
3429                 atmel_write16(dev, GCR, 0x0060);
3430
3431         atmel_write16(dev, GCR, 0x0040);
3432         mdelay(500);
3433
3434         if (atmel_read16(dev, MR2) == 0) {
3435                 /* No stored firmware so load a small stub which just
3436                    tells us the MAC address */
3437                 int i;
3438                 priv->card_type = CARD_TYPE_EEPROM;
3439                 atmel_write16(dev, BSR, BSS_IRAM);
3440                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3441                 atmel_set_gcr(dev, GCR_REMAP);
3442                 atmel_clear_gcr(priv->dev, 0x0040);
3443                 atmel_write16(dev, BSR, BSS_SRAM);
3444                 for (i =  LOOP_RETRY_LIMIT; i; i--)
3445                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3446                                 break;
3447                 if (i == 0) {
3448                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3449                 } else {
3450                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3451                         /* got address, now squash it again until the network
3452                            interface is opened */
3453                         if (priv->bus_type == BUS_TYPE_PCCARD)
3454                                 atmel_write16(dev, GCR, 0x0060);
3455                         atmel_write16(dev, GCR, 0x0040);
3456                         rc = 1;
3457                 }
3458         } else if (atmel_read16(dev, MR4) == 0) {
3459                 /* Mac address easy in this case. */
3460                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3461                 atmel_write16(dev,  BSR, 1);
3462                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3463                 atmel_write16(dev,  BSR, 0x200);
3464                 rc = 1;
3465         } else {
3466                 /* Standard firmware in flash, boot it up and ask
3467                    for the Mac Address */
3468                 priv->card_type = CARD_TYPE_SPI_FLASH;
3469                 if (atmel_wakeup_firmware(priv)) {
3470                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3471
3472                         /* got address, now squash it again until the network
3473                            interface is opened */
3474                         if (priv->bus_type == BUS_TYPE_PCCARD)
3475                                 atmel_write16(dev, GCR, 0x0060);
3476                         atmel_write16(dev, GCR, 0x0040);
3477                         rc = 1;
3478                 }
3479         }
3480
3481         if (rc) {
3482                 if (dev->dev_addr[0] == 0xFF) {
3483                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3484                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3485                         memcpy(dev->dev_addr, default_mac, 6);
3486                 }
3487                 printk(KERN_INFO "%s: MAC address %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
3488                        dev->name,
3489                        dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3490                        dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
3491
3492         }
3493
3494         return rc;
3495 }
3496
3497 static void build_wep_mib(struct atmel_private *priv)
3498 /* Move the encyption information on the MIB structure.
3499    This routine is for the pre-WPA firmware: later firmware has
3500    a different format MIB and a different routine. */
3501 {
3502         struct { /* NB this is matched to the hardware, don't change. */
3503                 u8 wep_is_on;
3504                 u8 default_key; /* 0..3 */
3505                 u8 reserved;
3506                 u8 exclude_unencrypted;
3507
3508                 u32 WEPICV_error_count;
3509                 u32 WEP_excluded_count;
3510
3511                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3512                 u8 encryption_level; /* 0, 1, 2 */
3513                 u8 reserved2[3];
3514         } mib;
3515         int i;
3516
3517         mib.wep_is_on = priv->wep_is_on;
3518         if (priv->wep_is_on) {
3519                 if (priv->wep_key_len[priv->default_key] > 5)
3520                         mib.encryption_level = 2;
3521                 else
3522                         mib.encryption_level = 1;
3523         } else {
3524                 mib.encryption_level = 0;
3525         }
3526
3527         mib.default_key = priv->default_key;
3528         mib.exclude_unencrypted = priv->exclude_unencrypted;
3529
3530         for(i = 0; i < MAX_ENCRYPTION_KEYS;  i++)
3531                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3532
3533         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3534 }
3535
3536 static void build_wpa_mib(struct atmel_private *priv)
3537 {
3538         /* This is for the later (WPA enabled) firmware. */
3539
3540         struct { /* NB this is matched to the hardware, don't change. */
3541                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3542                 u8 receiver_address[6];
3543                 u8 wep_is_on;
3544                 u8 default_key; /* 0..3 */
3545                 u8 group_key;
3546                 u8 exclude_unencrypted;
3547                 u8 encryption_type;
3548                 u8 reserved;
3549
3550                 u32 WEPICV_error_count;
3551                 u32 WEP_excluded_count;
3552
3553                 u8 key_RSC[4][8];
3554         } mib;
3555
3556         int i;
3557
3558         mib.wep_is_on = priv->wep_is_on;
3559         mib.exclude_unencrypted = priv->exclude_unencrypted;
3560         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3561
3562         /* zero all the keys before adding in valid ones. */
3563         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3564
3565         if (priv->wep_is_on) {
3566                 /* There's a comment in the Atmel code to the effect that this is only valid
3567                    when still using WEP, it may need to be set to something to use WPA */
3568                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3569
3570                 mib.default_key = mib.group_key = 255;
3571                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3572                         if (priv->wep_key_len[i] > 0) {
3573                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3574                                 if (i == priv->default_key) {
3575                                         mib.default_key = i;
3576                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3577                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3578                                 } else {
3579                                         mib.group_key = i;
3580                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3581                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3582                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3583                                 }
3584                         }
3585                 }
3586                 if (mib.default_key == 255)
3587                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3588                 if (mib.group_key == 255)
3589                         mib.group_key = mib.default_key;
3590
3591         }
3592
3593         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3594 }
3595
3596 static int reset_atmel_card(struct net_device *dev)
3597 {
3598         /* do everything necessary to wake up the hardware, including
3599            waiting for the lightning strike and throwing the knife switch....
3600
3601            set all the Mib values which matter in the card to match
3602            their settings in the atmel_private structure. Some of these
3603            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3604            can only be changed by tearing down the world and coming back through
3605            here.
3606
3607            This routine is also responsible for initialising some
3608            hardware-specific fields in the atmel_private structure,
3609            including a copy of the firmware's hostinfo stucture
3610            which is the route into the rest of the firmare datastructures. */
3611
3612         struct atmel_private *priv = netdev_priv(dev);
3613         u8 configuration;
3614
3615         /* data to add to the firmware names, in priority order
3616            this implemenents firmware versioning */
3617
3618         static char *firmware_modifier[] = {
3619                 "-wpa",
3620                 "",
3621                 NULL
3622         };
3623
3624         /* reset pccard */
3625         if (priv->bus_type == BUS_TYPE_PCCARD)
3626                 atmel_write16(priv->dev, GCR, 0x0060);
3627
3628         /* stop card , disable interrupts */
3629         atmel_write16(priv->dev, GCR, 0x0040);
3630
3631         if (priv->card_type == CARD_TYPE_EEPROM) {
3632                 /* copy in firmware if needed */
3633                 const struct firmware *fw_entry = NULL;
3634                 unsigned char *fw;
3635                 int len = priv->firmware_length;
3636                 if (!(fw = priv->firmware)) {
3637                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3638                                 if (strlen(priv->firmware_id) == 0) {
3639                                         printk(KERN_INFO
3640                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3641                                                dev->name);
3642                                         printk(KERN_INFO
3643                                                "%s: if not, use the firmware= module parameter.\n",
3644                                                dev->name);
3645                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3646                                 }
3647                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3648                                         printk(KERN_ALERT
3649                                                "%s: firmware %s is missing, cannot continue.\n",
3650                                                dev->name, priv->firmware_id);
3651                                         return 0;
3652                                 }
3653                         } else {
3654                                 int fw_index = 0;
3655                                 int success = 0;
3656
3657                                 /* get firmware filename entry based on firmware type ID */
3658                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3659                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3660                                         fw_index++;
3661
3662                                 /* construct the actual firmware file name */
3663                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3664                                         int i;
3665                                         for (i = 0; firmware_modifier[i]; i++) {
3666                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3667                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3668                                                 priv->firmware_id[31] = '\0';
3669                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3670                                                         success = 1;
3671                                                         break;
3672                                                 }
3673                                         }
3674                                 }
3675                                 if (!success) {
3676                                         printk(KERN_ALERT
3677                                                "%s: firmware %s is missing, cannot start.\n",
3678                                                dev->name, priv->firmware_id);
3679                                         priv->firmware_id[0] = '\0';
3680                                         return 0;
3681                                 }
3682                         }
3683
3684                         fw = fw_entry->data;
3685                         len = fw_entry->size;
3686                 }
3687
3688                 if (len <= 0x6000) {
3689                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3690                         atmel_copy_to_card(priv->dev, 0, fw, len);
3691                         atmel_set_gcr(priv->dev, GCR_REMAP);
3692                 } else {
3693                         /* Remap */
3694                         atmel_set_gcr(priv->dev, GCR_REMAP);
3695                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3696                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3697                         atmel_write16(priv->dev, BSR, 0x2ff);
3698                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3699                 }
3700
3701                 if (fw_entry)
3702                         release_firmware(fw_entry);
3703         }
3704
3705         if (!atmel_wakeup_firmware(priv))
3706                 return 0;
3707
3708         /* Check the version and set the correct flag for wpa stuff,
3709            old and new firmware is incompatible.
3710            The pre-wpa 3com firmware reports major version 5,
3711            the wpa 3com firmware is major version 4 and doesn't need
3712            the 3com broken-ness filter. */
3713         priv->use_wpa = (priv->host_info.major_version == 4);
3714         priv->radio_on_broken = (priv->host_info.major_version == 5);
3715
3716         /* unmask all irq sources */
3717         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3718
3719         /* int Tx system and enable Tx */
3720         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3721         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3722         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3723         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3724
3725         priv->tx_desc_free = priv->host_info.tx_desc_count;
3726         priv->tx_desc_head = 0;
3727         priv->tx_desc_tail = 0;
3728         priv->tx_desc_previous = 0;
3729         priv->tx_free_mem = priv->host_info.tx_buff_size;
3730         priv->tx_buff_head = 0;
3731         priv->tx_buff_tail = 0;
3732
3733         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3734         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3735                                    configuration | FUNC_CTRL_TxENABLE);
3736
3737         /* init Rx system and enable */
3738         priv->rx_desc_head = 0;
3739
3740         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3741         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3742                                    configuration | FUNC_CTRL_RxENABLE);
3743
3744         if (!priv->radio_on_broken) {
3745                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3746                     CMD_STATUS_REJECTED_RADIO_OFF) {
3747                         printk(KERN_INFO
3748                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3749                                dev->name);
3750                         return 0;
3751                 }
3752         }
3753
3754         /* set up enough MIB values to run. */
3755         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3756         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3757         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3758         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3759         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3760         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3761         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3762         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3763                       priv->dev->dev_addr, 6);
3764         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3765         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3766         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3767         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3768         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3769         if (priv->use_wpa)
3770                 build_wpa_mib(priv);
3771         else
3772                 build_wep_mib(priv);
3773
3774         return 1;
3775 }
3776
3777 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3778 {
3779         if (cmd)
3780                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
3781                                    cmd, cmd_size);
3782
3783         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
3784         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
3785 }
3786
3787 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3788 {
3789         int i, status;
3790
3791         atmel_send_command(priv, command, cmd, cmd_size);
3792
3793         for (i = 5000; i; i--) {
3794                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3795                 if (status != CMD_STATUS_IDLE &&
3796                     status != CMD_STATUS_IN_PROGRESS)
3797                         break;
3798                 udelay(20);
3799         }
3800
3801         if (i == 0) {
3802                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
3803                 status =  CMD_STATUS_HOST_ERROR;
3804         } else {
3805                 if (command != CMD_EnableRadio)
3806                         status = CMD_STATUS_COMPLETE;
3807         }
3808
3809         return status;
3810 }
3811
3812 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
3813 {
3814         struct get_set_mib m;
3815         m.type = type;
3816         m.size = 1;
3817         m.index = index;
3818
3819         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3820         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
3821 }
3822
3823 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
3824 {
3825         struct get_set_mib m;
3826         m.type = type;
3827         m.size = 1;
3828         m.index = index;
3829         m.data[0] = data;
3830
3831         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3832 }
3833
3834 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data)
3835 {
3836         struct get_set_mib m;
3837         m.type = type;
3838         m.size = 2;
3839         m.index = index;
3840         m.data[0] = data;
3841         m.data[1] = data >> 8;
3842
3843         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
3844 }
3845
3846 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3847 {
3848         struct get_set_mib m;
3849         m.type = type;
3850         m.size = data_len;
3851         m.index = index;
3852
3853         if (data_len > MIB_MAX_DATA_BYTES)
3854                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3855
3856         memcpy(m.data, data, data_len);
3857         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3858 }
3859
3860 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3861 {
3862         struct get_set_mib m;
3863         m.type = type;
3864         m.size = data_len;
3865         m.index = index;
3866
3867         if (data_len > MIB_MAX_DATA_BYTES)
3868                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3869
3870         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3871         atmel_copy_to_host(priv->dev, data,
3872                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
3873 }
3874
3875 static void atmel_writeAR(struct net_device *dev, u16 data)
3876 {
3877         int i;
3878         outw(data, dev->base_addr + AR);
3879         /* Address register appears to need some convincing..... */
3880         for (i = 0; data != inw(dev->base_addr + AR) && i<10; i++)
3881                 outw(data, dev->base_addr + AR);
3882 }
3883
3884 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len)
3885 {
3886         int i;
3887         atmel_writeAR(dev, dest);
3888         if (dest % 2) {
3889                 atmel_write8(dev, DR, *src);
3890                 src++; len--;
3891         }
3892         for (i = len; i > 1 ; i -= 2) {
3893                 u8 lb = *src++;
3894                 u8 hb = *src++;
3895                 atmel_write16(dev, DR, lb | (hb << 8));
3896         }
3897         if (i)
3898                 atmel_write8(dev, DR, *src);
3899 }
3900
3901 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len)
3902 {
3903         int i;
3904         atmel_writeAR(dev, src);
3905         if (src % 2) {
3906                 *dest = atmel_read8(dev, DR);
3907                 dest++; len--;
3908         }
3909         for (i = len; i > 1 ; i -= 2) {
3910                 u16 hw = atmel_read16(dev, DR);
3911                 *dest++ = hw;
3912                 *dest++ = hw >> 8;
3913         }
3914         if (i)
3915                 *dest = atmel_read8(dev, DR);
3916 }
3917
3918 static void atmel_set_gcr(struct net_device *dev, u16 mask)
3919 {
3920         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
3921 }
3922
3923 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
3924 {
3925         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
3926 }
3927
3928 static int atmel_lock_mac(struct atmel_private *priv)
3929 {
3930         int i, j = 20;
3931  retry:
3932         for (i = 5000; i; i--) {
3933                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
3934                         break;
3935                 udelay(20);
3936         }
3937
3938         if (!i) return 0; /* timed out */
3939
3940         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
3941         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
3942                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
3943                 if (!j--) return 0; /* timed out */
3944                 goto retry;
3945         }
3946
3947         return 1;
3948 }
3949
3950 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
3951 {
3952         atmel_writeAR(priv->dev, pos);
3953         atmel_write16(priv->dev, DR, data); /* card is little-endian */
3954         atmel_write16(priv->dev, DR, data >> 16);
3955 }
3956
3957 /***************************************************************************/
3958 /* There follows the source form of the MAC address reading firmware       */
3959 /***************************************************************************/
3960 #if 0
3961
3962 /* Copyright 2003 Matthew T. Russotto                                      */
3963 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
3964 /* included in "atmel wireless lan drivers" package                        */
3965 /**
3966     This file is part of net.russotto.AtmelMACFW, hereto referred to
3967     as AtmelMACFW
3968
3969     AtmelMACFW is free software; you can redistribute it and/or modify
3970     it under the terms of the GNU General Public License version 2
3971     as published by the Free Software Foundation.
3972
3973     AtmelMACFW is distributed in the hope that it will be useful,
3974     but WITHOUT ANY WARRANTY; without even the implied warranty of
3975     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
3976     GNU General Public License for more details.
3977
3978     You should have received a copy of the GNU General Public License
3979     along with AtmelMACFW; if not, write to the Free Software
3980     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
3981
3982 ****************************************************************************/
3983 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
3984 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
3985 /* It only works on SPI EEPROM versions of the card.                       */
3986
3987 /* This firmware initializes the SPI controller and clock, reads the MAC   */
3988 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
3989 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
3990 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
3991 /* MR4, for investigational purposes (maybe we can determine chip type     */
3992 /* from that?)                                                             */
3993
3994         .org 0
3995     .set MRBASE, 0x8000000
3996         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
3997         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
3998         .set SRAM_BASE,  0x02000000
3999         .set SP_BASE,    0x0F300000
4000         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4001         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4002         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4003         .set STACK_BASE, 0x5600
4004         .set SP_SR, 0x10
4005         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4006         .set SP_RDRF, 1 /* status register bit -- RDR full */
4007         .set SP_SWRST, 0x80
4008         .set SP_SPIEN, 0x1
4009         .set SP_CR, 0   /* control register */
4010         .set SP_MR, 4   /* mode register */
4011         .set SP_RDR, 0x08 /* Read Data Register */
4012         .set SP_TDR, 0x0C /* Transmit Data Register */
4013         .set SP_CSR0, 0x30 /* chip select registers */
4014         .set SP_CSR1, 0x34
4015         .set SP_CSR2, 0x38
4016         .set SP_CSR3, 0x3C
4017         .set NVRAM_CMD_RDSR, 5 /* read status register */
4018         .set NVRAM_CMD_READ, 3 /* read data */
4019         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4020         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4021                                   serial output, since SO is normally high.  But it
4022                                   does cause 8 clock cycles and thus 8 bits to be
4023                                   clocked in to the chip.  See Atmel's SPI
4024                                   controller (e.g. AT91M55800) timing and 4K
4025                                   SPI EEPROM manuals */
4026
4027         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4028         .set NVRAM_IMAGE, 0x02000200
4029         .set NVRAM_LENGTH, 0x0200
4030         .set MAC_ADDRESS_MIB, SRAM_BASE
4031         .set MAC_ADDRESS_LENGTH, 6
4032         .set MAC_BOOT_FLAG, 0x10
4033         .set MR1, 0
4034         .set MR2, 4
4035         .set MR3, 8
4036         .set MR4, 0xC
4037 RESET_VECTOR:
4038         b RESET_HANDLER
4039 UNDEF_VECTOR:
4040         b HALT1
4041 SWI_VECTOR:
4042         b HALT1
4043 IABORT_VECTOR:
4044         b HALT1
4045 DABORT_VECTOR:
4046 RESERVED_VECTOR:
4047         b HALT1
4048 IRQ_VECTOR:
4049         b HALT1
4050 FIQ_VECTOR:
4051         b HALT1
4052 HALT1:  b HALT1
4053 RESET_HANDLER:
4054         mov     r0, #CPSR_INITIAL
4055         msr     CPSR_c, r0      /* This is probably unnecessary */
4056
4057 /* I'm guessing this is initializing clock generator electronics for SPI */
4058         ldr     r0, =SPI_CGEN_BASE
4059         mov     r1, #0
4060         mov     r1, r1, lsl #3
4061         orr     r1,r1, #0
4062         str     r1, [r0]
4063         ldr     r1, [r0, #28]
4064         bic     r1, r1, #16
4065         str     r1, [r0, #28]
4066         mov     r1, #1
4067         str     r1, [r0, #8]
4068
4069         ldr     r0, =MRBASE
4070         mov     r1, #0
4071         strh    r1, [r0, #MR1]
4072         strh    r1, [r0, #MR2]
4073         strh    r1, [r0, #MR3]
4074         strh    r1, [r0, #MR4]
4075
4076         mov     sp, #STACK_BASE
4077         bl      SP_INIT
4078         mov     r0, #10
4079         bl      DELAY9
4080         bl      GET_MAC_ADDR
4081         bl      GET_WHOLE_NVRAM
4082         ldr     r0, =MRBASE
4083         ldr     r1, =MAC_ADDRESS_MIB
4084         strh    r1, [r0, #MR2]
4085         ldr     r1, =NVRAM_IMAGE
4086         strh    r1, [r0, #MR4]
4087         mov     r1, #MAC_BOOT_FLAG
4088         strh    r1, [r0, #MR3]
4089 HALT2:  b HALT2
4090 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4091 GET_WHOLE_NVRAM:
4092         stmdb   sp!, {lr}
4093         mov     r2, #0 /* 0th bytes of NVRAM */
4094         mov     r3, #NVRAM_LENGTH
4095         mov     r1, #0          /* not used in routine */
4096         ldr     r0, =NVRAM_IMAGE
4097         bl      NVRAM_XFER
4098         ldmia   sp!, {lr}
4099         bx      lr
4100 .endfunc
4101
4102 .func Get_MAC_Addr, GET_MAC_ADDR
4103 GET_MAC_ADDR:
4104         stmdb   sp!, {lr}
4105         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4106         mov     r3, #MAC_ADDRESS_LENGTH
4107         mov     r1, #0          /* not used in routine */
4108         ldr     r0, =MAC_ADDRESS_MIB
4109         bl      NVRAM_XFER
4110         ldmia   sp!, {lr}
4111         bx      lr
4112 .endfunc
4113 .ltorg
4114 .func Delay9, DELAY9
4115 DELAY9:
4116         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4117 DELAYLOOP:
4118         beq     DELAY9_done
4119         subs    r0, r0, #1
4120         b       DELAYLOOP
4121 DELAY9_done:
4122         bx      lr
4123 .endfunc
4124
4125 .func SP_Init, SP_INIT
4126 SP_INIT:
4127         mov     r1, #SP_SWRST
4128         ldr     r0, =SP_BASE
4129         str     r1, [r0, #SP_CR] /* reset the SPI */
4130         mov     r1, #0
4131         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4132         mov     r1, #SP_SPIEN
4133         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4134         str     r1, [r0, #SP_CR] /* enable the SPI */
4135
4136 /*  My guess would be this turns on the SPI clock */
4137         ldr     r3, =SPI_CGEN_BASE
4138         ldr     r1, [r3, #28]
4139         orr     r1, r1, #0x2000
4140         str     r1, [r3, #28]
4141
4142         ldr     r1, =0x2000c01
4143         str     r1, [r0, #SP_CSR0]
4144         ldr     r1, =0x2000201
4145         str     r1, [r0, #SP_CSR1]
4146         str     r1, [r0, #SP_CSR2]
4147         str     r1, [r0, #SP_CSR3]
4148         ldr     r1, [r0, #SP_SR]
4149         ldr     r0, [r0, #SP_RDR]
4150         bx      lr
4151 .endfunc
4152 .func NVRAM_Init, NVRAM_INIT
4153 NVRAM_INIT:
4154         ldr     r1, =SP_BASE
4155         ldr     r0, [r1, #SP_RDR]
4156         mov     r0, #NVRAM_CMD_RDSR
4157         str     r0, [r1, #SP_TDR]
4158 SP_loop1:
4159         ldr     r0, [r1, #SP_SR]
4160         tst     r0, #SP_TDRE
4161         beq     SP_loop1
4162
4163         mov     r0, #SPI_8CLOCKS
4164         str     r0, [r1, #SP_TDR]
4165 SP_loop2:
4166         ldr     r0, [r1, #SP_SR]
4167         tst     r0, #SP_TDRE
4168         beq     SP_loop2
4169
4170         ldr     r0, [r1, #SP_RDR]
4171 SP_loop3:
4172         ldr     r0, [r1, #SP_SR]
4173         tst     r0, #SP_RDRF
4174         beq     SP_loop3
4175
4176         ldr     r0, [r1, #SP_RDR]
4177         and     r0, r0, #255
4178         bx      lr
4179 .endfunc
4180
4181 .func NVRAM_Xfer, NVRAM_XFER
4182         /* r0 = dest address */
4183         /* r1 = not used */
4184         /* r2 = src address within NVRAM */
4185         /* r3 = length */
4186 NVRAM_XFER:
4187         stmdb   sp!, {r4, r5, lr}
4188         mov     r5, r0          /* save r0 (dest address) */
4189         mov     r4, r3          /* save r3 (length) */
4190         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4191         and     r0, r0, #8
4192         add     r0, r0, #NVRAM_CMD_READ
4193         ldr     r1, =NVRAM_SCRATCH
4194         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4195         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4196 _local1:
4197         bl      NVRAM_INIT
4198         tst     r0, #NVRAM_SR_RDY
4199         bne     _local1
4200         mov     r0, #20
4201         bl      DELAY9
4202         mov     r2, r4          /* length */
4203         mov     r1, r5          /* dest address */
4204         mov     r0, #2          /* bytes to transfer in command */
4205         bl      NVRAM_XFER2
4206         ldmia   sp!, {r4, r5, lr}
4207         bx      lr
4208 .endfunc
4209
4210 .func NVRAM_Xfer2, NVRAM_XFER2
4211 NVRAM_XFER2:
4212         stmdb   sp!, {r4, r5, r6, lr}
4213         ldr     r4, =SP_BASE
4214         mov     r3, #0
4215         cmp     r0, #0
4216         bls     _local2
4217         ldr     r5, =NVRAM_SCRATCH
4218 _local4:
4219         ldrb    r6, [r5, r3]
4220         str     r6, [r4, #SP_TDR]
4221 _local3:
4222         ldr     r6, [r4, #SP_SR]
4223         tst     r6, #SP_TDRE
4224         beq     _local3
4225         add     r3, r3, #1
4226         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4227         blo     _local4
4228 _local2:
4229         mov     r3, #SPI_8CLOCKS
4230         str     r3, [r4, #SP_TDR]
4231         ldr     r0, [r4, #SP_RDR]
4232 _local5:
4233         ldr     r0, [r4, #SP_SR]
4234         tst     r0, #SP_RDRF
4235         beq     _local5
4236         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 */
4237         mov     r0, #0
4238         cmp     r2, #0  /* r2 is # of bytes to copy in */
4239         bls     _local6
4240 _local7:
4241         ldr     r5, [r4, #SP_SR]
4242         tst     r5, #SP_TDRE
4243         beq     _local7
4244         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4245 _local8:
4246         ldr     r5, [r4, #SP_SR]
4247         tst     r5, #SP_RDRF
4248         beq     _local8
4249         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4250         strb    r5, [r1], #1 /* postindexed */
4251         add     r0, r0, #1
4252         cmp     r0, r2
4253         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4254 _local6:
4255         mov     r0, #200
4256         bl      DELAY9
4257         ldmia   sp!, {r4, r5, r6, lr}
4258         bx      lr
4259 #endif