drivers/net/wireless/atmel.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003-2004 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12     extensions, (C) Jean Tourrilhes.
  13
  14     The firmware module for reading the MAC address of the card comes from
  15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17     This file contains the module in binary form and, under the terms
  18     of the GPL, in source form. The source is located at the end of the file.
  19
  20     This program is free software; you can redistribute it and/or modify
  21     it under the terms of the GNU General Public License as published by
  22     the Free Software Foundation; either version 2 of the License, or
  23     (at your option) any later version.
  24
  25     This software is distributed in the hope that it will be useful,
  26     but WITHOUT ANY WARRANTY; without even the implied warranty of
  27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28     GNU General Public License for more details.
  29
  30     You should have received a copy of the GNU General Public License
  31     along with Atmel wireless lan drivers; if not, write to the Free Software
  32     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  36
  37     Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
  38     hardware used during development of this driver.
  39
  40 ******************************************************************************/
  41
  42 #include <linux/config.h>
  43 #include <linux/init.h>
  44
  45 #include <linux/kernel.h>
  46 #include <linux/sched.h>
  47 #include <linux/ptrace.h>
  48 #include <linux/slab.h>
  49 #include <linux/string.h>
  50 #include <linux/ctype.h>
  51 #include <linux/timer.h>
  52 #include <asm/io.h>
  53 #include <asm/system.h>
  54 #include <asm/uaccess.h>
  55 #include <linux/module.h>
  56 #include <linux/netdevice.h>
  57 #include <linux/etherdevice.h>
  58 #include <linux/skbuff.h>
  59 #include <linux/if_arp.h>
  60 #include <linux/ioport.h>
  61 #include <linux/fcntl.h>
  62 #include <linux/delay.h>
  63 #include <linux/wireless.h>
  64 #include <net/iw_handler.h>
  65 #include <linux/byteorder/generic.h>
  66 #include <linux/crc32.h>
  67 #include <linux/proc_fs.h>
  68 #include <linux/device.h>
  69 #include <linux/moduleparam.h>
  70 #include <linux/firmware.h>
  71 #include <net/ieee80211.h>
  72 #include "atmel.h"
  73
  74 #define DRIVER_MAJOR 0
  75 #define DRIVER_MINOR 98
  76
  77 MODULE_AUTHOR("Simon Kelley");
  78 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  79 MODULE_LICENSE("GPL");
  80 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  81
  82 /* The name of the firmware file to be loaded
  83    over-rides any automatic selection */
  84 static char *firmware = NULL;
  85 module_param(firmware, charp, 0);
  86
  87 /* table of firmware file names */
  88 static struct {
  89         AtmelFWType fw_type;
  90         const char *fw_file;
  91         const char *fw_file_ext;
  92 } fw_table[] = {
  93         { ATMEL_FW_TYPE_502,      "atmel_at76c502",      "bin" },
  94         { ATMEL_FW_TYPE_502D,     "atmel_at76c502d",     "bin" },
  95         { ATMEL_FW_TYPE_502E,     "atmel_at76c502e",     "bin" },
  96         { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
  97         { ATMEL_FW_TYPE_504,      "atmel_at76c504",      "bin" },
  98         { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
  99         { ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
 100         { ATMEL_FW_TYPE_506,      "atmel_at76c506",      "bin" },
 101         { ATMEL_FW_TYPE_NONE,      NULL,                  NULL }
 102 };
 103
 104 #define MAX_SSID_LENGTH 32
 105 #define MGMT_JIFFIES (256 * HZ / 100)
 106
 107 #define MAX_BSS_ENTRIES 64
 108
 109 /* registers */
 110 #define GCR  0x00    //      (SIR0)  General Configuration Register
 111 #define BSR  0x02    //      (SIR1)  Bank Switching Select Register
 112 #define AR   0x04
 113 #define DR   0x08
 114 #define MR1  0x12    //      Mirror Register 1
 115 #define MR2  0x14    //      Mirror Register 2
 116 #define MR3  0x16    //      Mirror Register 3
 117 #define MR4  0x18    //      Mirror Register 4
 118
 119 #define GPR1                            0x0c
 120 #define GPR2                            0x0e
 121 #define GPR3                            0x10
 122 //
 123 // Constants for the GCR register.
 124 //
 125 #define GCR_REMAP     0x0400          // Remap internal SRAM to 0
 126 #define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset)
 127 #define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
 128 #define GCR_ENINT     0x0002          // Enable Interrupts
 129 #define GCR_ACKINT    0x0008          // Acknowledge Interrupts
 130
 131 #define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
 132 #define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
 133 //
 134 // Constants for the MR registers.
 135 //
 136 #define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
 137 #define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
 138 #define MAC_INIT_OK             0x0002        // MAC boot has been completed
 139
 140 #define C80211_SUBTYPE_MGMT_ASS_REQUEST                 0x00
 141 #define C80211_SUBTYPE_MGMT_ASS_RESPONSE                0x10
 142 #define C80211_SUBTYPE_MGMT_REASS_REQUEST               0x20
 143 #define C80211_SUBTYPE_MGMT_REASS_RESPONSE              0x30
 144 #define C80211_SUBTYPE_MGMT_ProbeRequest                0x40
 145 #define C80211_SUBTYPE_MGMT_ProbeResponse               0x50
 146 #define C80211_SUBTYPE_MGMT_BEACON                      0x80
 147 #define C80211_SUBTYPE_MGMT_ATIM                        0x90
 148 #define C80211_SUBTYPE_MGMT_DISASSOSIATION              0xA0
 149 #define C80211_SUBTYPE_MGMT_Authentication              0xB0
 150 #define C80211_SUBTYPE_MGMT_Deauthentication    0xC0
 151
 152 #define C80211_MGMT_AAN_OPENSYSTEM              0x0000
 153 #define C80211_MGMT_AAN_SHAREDKEY               0x0001
 154
 155 #define C80211_MGMT_CAPABILITY_ESS              0x0001  // see 802.11 p.58
 156 #define C80211_MGMT_CAPABILITY_IBSS             0x0002  //      - " -
 157 #define C80211_MGMT_CAPABILITY_CFPollable       0x0004  //      - " -
 158 #define C80211_MGMT_CAPABILITY_CFPollRequest    0x0008  //      - " -
 159 #define C80211_MGMT_CAPABILITY_Privacy          0x0010  //      - " -
 160
 161 #define C80211_MGMT_SC_Success                  0
 162 #define C80211_MGMT_SC_Unspecified              1
 163 #define C80211_MGMT_SC_SupportCapabilities      10
 164 #define C80211_MGMT_SC_ReassDenied              11
 165 #define C80211_MGMT_SC_AssDenied                12
 166 #define C80211_MGMT_SC_AuthAlgNotSupported      13
 167 #define C80211_MGMT_SC_AuthTransSeqNumError     14
 168 #define C80211_MGMT_SC_AuthRejectChallenge      15
 169 #define C80211_MGMT_SC_AuthRejectTimeout        16
 170 #define C80211_MGMT_SC_AssDeniedHandleAP        17
 171 #define C80211_MGMT_SC_AssDeniedBSSRate         18
 172
 173 #define C80211_MGMT_ElementID_SSID              0
 174 #define C80211_MGMT_ElementID_SupportedRates    1
 175 #define C80211_MGMT_ElementID_ChallengeText     16
 176 #define C80211_MGMT_CAPABILITY_ShortPreamble    0x0020
 177
 178 #define MIB_MAX_DATA_BYTES    212
 179 #define MIB_HEADER_SIZE       4    /* first four fields */
 180
 181 struct get_set_mib {
 182         u8 type;
 183         u8 size;
 184         u8 index;
 185         u8 reserved;
 186         u8 data[MIB_MAX_DATA_BYTES];
 187 };
 188
 189 struct rx_desc {
 190         u32          Next;
 191         u16          MsduPos;
 192         u16          MsduSize;
 193
 194         u8           State;
 195         u8           Status;
 196         u8           Rate;
 197         u8           Rssi;
 198         u8           LinkQuality;
 199         u8           PreambleType;
 200         u16          Duration;
 201         u32          RxTime;
 202 };
 203
 204 #define RX_DESC_FLAG_VALID       0x80
 205 #define RX_DESC_FLAG_CONSUMED    0x40
 206 #define RX_DESC_FLAG_IDLE        0x00
 207
 208 #define RX_STATUS_SUCCESS        0x00
 209
 210 #define RX_DESC_MSDU_POS_OFFSET      4
 211 #define RX_DESC_MSDU_SIZE_OFFSET     6
 212 #define RX_DESC_FLAGS_OFFSET         8
 213 #define RX_DESC_STATUS_OFFSET        9
 214 #define RX_DESC_RSSI_OFFSET          11
 215 #define RX_DESC_LINK_QUALITY_OFFSET  12
 216 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 217 #define RX_DESC_DURATION_OFFSET      14
 218 #define RX_DESC_RX_TIME_OFFSET       16
 219
 220 struct tx_desc {
 221         u32       NextDescriptor;
 222         u16       TxStartOfFrame;
 223         u16       TxLength;
 224
 225         u8        TxState;
 226         u8        TxStatus;
 227         u8        RetryCount;
 228
 229         u8        TxRate;
 230
 231         u8        KeyIndex;
 232         u8        ChiperType;
 233         u8        ChipreLength;
 234         u8        Reserved1;
 235
 236         u8        Reserved;
 237         u8        PacketType;
 238         u16       HostTxLength;
 239 };
 240
 241 #define TX_DESC_NEXT_OFFSET          0
 242 #define TX_DESC_POS_OFFSET           4
 243 #define TX_DESC_SIZE_OFFSET          6
 244 #define TX_DESC_FLAGS_OFFSET         8
 245 #define TX_DESC_STATUS_OFFSET        9
 246 #define TX_DESC_RETRY_OFFSET         10
 247 #define TX_DESC_RATE_OFFSET          11
 248 #define TX_DESC_KEY_INDEX_OFFSET     12
 249 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 250 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 251 #define TX_DESC_PACKET_TYPE_OFFSET   17
 252 #define TX_DESC_HOST_LENGTH_OFFSET   18
 253
 254 ///////////////////////////////////////////////////////
 255 // Host-MAC interface
 256 ///////////////////////////////////////////////////////
 257
 258 #define TX_STATUS_SUCCESS       0x00
 259
 260 #define TX_FIRM_OWN             0x80
 261 #define TX_DONE                 0x40
 262
 263 #define TX_ERROR                0x01
 264
 265 #define TX_PACKET_TYPE_DATA     0x01
 266 #define TX_PACKET_TYPE_MGMT     0x02
 267
 268 #define ISR_EMPTY               0x00        // no bits set in ISR
 269 #define ISR_TxCOMPLETE          0x01        // packet transmitted
 270 #define ISR_RxCOMPLETE          0x02        // packet received
 271 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
 272 #define ISR_FATAL_ERROR         0x08        // Fatal error
 273 #define ISR_COMMAND_COMPLETE    0x10        // command completed
 274 #define ISR_OUT_OF_RANGE        0x20        // command completed
 275 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
 276 #define ISR_GENERIC_IRQ         0x80
 277
 278 #define Local_Mib_Type          0x01
 279 #define Mac_Address_Mib_Type    0x02
 280 #define Mac_Mib_Type            0x03
 281 #define Statistics_Mib_Type     0x04
 282 #define Mac_Mgmt_Mib_Type       0x05
 283 #define Mac_Wep_Mib_Type        0x06
 284 #define Phy_Mib_Type            0x07
 285 #define Multi_Domain_MIB        0x08
 286
 287 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 288 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 289 #define MAC_MIB_RTS_THRESHOLD_POS             10
 290 #define MAC_MIB_SHORT_RETRY_POS               16
 291 #define MAC_MIB_LONG_RETRY_POS                17
 292 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 293 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 294 #define MAC_MGMT_MIB_STATION_ID_POS           6
 295 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 296 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 297 #define MAC_MGMT_MIB_PS_MODE_POS              53
 298 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 299 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 300 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 301 #define PHY_MIB_CHANNEL_POS                   14
 302 #define PHY_MIB_RATE_SET_POS                  20
 303 #define PHY_MIB_REG_DOMAIN_POS                26
 304 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 305 #define LOCAL_MIB_SSID_SIZE                   5
 306 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 307 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 308 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 309 #define LOCAL_MIB_PREAMBLE_TYPE               9
 310 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 311
 312 #define         CMD_Set_MIB_Vars              0x01
 313 #define         CMD_Get_MIB_Vars              0x02
 314 #define         CMD_Scan                      0x03
 315 #define         CMD_Join                      0x04
 316 #define         CMD_Start                     0x05
 317 #define         CMD_EnableRadio               0x06
 318 #define         CMD_DisableRadio              0x07
 319 #define         CMD_SiteSurvey                0x0B
 320
 321 #define         CMD_STATUS_IDLE                   0x00
 322 #define         CMD_STATUS_COMPLETE               0x01
 323 #define         CMD_STATUS_UNKNOWN                0x02
 324 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 325 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 326 #define         CMD_STATUS_TIME_OUT               0x07
 327 #define         CMD_STATUS_IN_PROGRESS            0x08
 328 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 329 #define         CMD_STATUS_HOST_ERROR             0xFF
 330 #define         CMD_STATUS_BUSY                   0xFE
 331
 332 #define CMD_BLOCK_COMMAND_OFFSET        0
 333 #define CMD_BLOCK_STATUS_OFFSET         1
 334 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 335
 336 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 337
 338 #define MGMT_FRAME_BODY_OFFSET          24
 339 #define MAX_AUTHENTICATION_RETRIES      3
 340 #define MAX_ASSOCIATION_RETRIES         3
 341
 342 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 343
 344 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 345 #define LOOP_RETRY_LIMIT   500000
 346
 347 #define ACTIVE_MODE     1
 348 #define PS_MODE         2
 349
 350 #define MAX_ENCRYPTION_KEYS 4
 351 #define MAX_ENCRYPTION_KEY_SIZE 40
 352
 353 ///////////////////////////////////////////////////////////////////////////
 354 // 802.11 related definitions
 355 ///////////////////////////////////////////////////////////////////////////
 356
 357 //
 358 // Regulatory Domains
 359 //
 360
 361 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
 362 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
 363 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
 364 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
 365 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
 366 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
 367 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
 368 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
 369
 370 #define BSS_TYPE_AD_HOC         1
 371 #define BSS_TYPE_INFRASTRUCTURE 2
 372
 373 #define SCAN_TYPE_ACTIVE        0
 374 #define SCAN_TYPE_PASSIVE       1
 375
 376 #define LONG_PREAMBLE           0
 377 #define SHORT_PREAMBLE          1
 378 #define AUTO_PREAMBLE           2
 379
 380 #define DATA_FRAME_WS_HEADER_SIZE   30
 381
 382 /* promiscuous mode control */
 383 #define PROM_MODE_OFF                   0x0
 384 #define PROM_MODE_UNKNOWN               0x1
 385 #define PROM_MODE_CRC_FAILED            0x2
 386 #define PROM_MODE_DUPLICATED            0x4
 387 #define PROM_MODE_MGMT                  0x8
 388 #define PROM_MODE_CTRL                  0x10
 389 #define PROM_MODE_BAD_PROTOCOL          0x20
 390
 391 #define IFACE_INT_STATUS_OFFSET         0
 392 #define IFACE_INT_MASK_OFFSET           1
 393 #define IFACE_LOCKOUT_HOST_OFFSET       2
 394 #define IFACE_LOCKOUT_MAC_OFFSET        3
 395 #define IFACE_FUNC_CTRL_OFFSET          28
 396 #define IFACE_MAC_STAT_OFFSET           30
 397 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 398
 399 #define CIPHER_SUITE_NONE     0
 400 #define CIPHER_SUITE_WEP_64   1
 401 #define CIPHER_SUITE_TKIP     2
 402 #define CIPHER_SUITE_AES      3
 403 #define CIPHER_SUITE_CCX      4
 404 #define CIPHER_SUITE_WEP_128  5
 405
 406 //
 407 // IFACE MACROS & definitions
 408 //
 409 //
 410
 411 // FuncCtrl field:
 412 //
 413 #define FUNC_CTRL_TxENABLE              0x10
 414 #define FUNC_CTRL_RxENABLE              0x20
 415 #define FUNC_CTRL_INIT_COMPLETE         0x01
 416
 417 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 418    For copyright information and source see the end of this file. */
 419 static u8 mac_reader[] = {
 420         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
 421         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
 422         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 423         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
 424         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
 425         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
 426         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
 427         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
 428         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
 429         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
 430         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 431         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 432         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 433         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 434         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
 435         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
 436         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
 437         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
 438         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
 439         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
 440         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
 441         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
 442         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
 443         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 444         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 445         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
 446         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
 447         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
 448         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
 449         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
 450         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
 451         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
 452         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
 453         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
 454         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
 455         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
 456         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
 457         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
 458         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
 459         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
 460         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
 461         0x00,0x01,0x00,0x02
 462 };
 463
 464 struct atmel_private {
 465         void *card; /* Bus dependent stucture varies for PCcard */
 466         int (*present_callback)(void *); /* And callback which uses it */
 467         char firmware_id[32];
 468         AtmelFWType firmware_type;
 469         u8 *firmware;
 470         int firmware_length;
 471         struct timer_list management_timer;
 472         struct net_device *dev;
 473         struct device *sys_dev;
 474         struct iw_statistics wstats;
 475         struct net_device_stats stats;  // device stats
 476         spinlock_t irqlock, timerlock;  // spinlocks
 477         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 478         enum {
 479                 CARD_TYPE_PARALLEL_FLASH,
 480                 CARD_TYPE_SPI_FLASH,
 481                 CARD_TYPE_EEPROM
 482         } card_type;
 483         int do_rx_crc; /* If we need to CRC incoming packets */
 484         int probe_crc; /* set if we don't yet know */
 485         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 486         u16 rx_desc_head;
 487         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 488         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 489
 490         u16 frag_seq, frag_len, frag_no;
 491         u8 frag_source[6];
 492
 493         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 494         u8 group_cipher_suite, pairwise_cipher_suite;
 495         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 496         int wep_key_len[MAX_ENCRYPTION_KEYS];
 497         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 498
 499         u16 host_info_base;
 500         struct host_info_struct {
 501                 /* NB this is matched to the hardware, don't change. */
 502                 u8 volatile int_status;
 503                 u8 volatile int_mask;
 504                 u8 volatile lockout_host;
 505                 u8 volatile lockout_mac;
 506
 507                 u16 tx_buff_pos;
 508                 u16 tx_buff_size;
 509                 u16 tx_desc_pos;
 510                 u16 tx_desc_count;
 511
 512                 u16 rx_buff_pos;
 513                 u16 rx_buff_size;
 514                 u16 rx_desc_pos;
 515                 u16 rx_desc_count;
 516
 517                 u16 build_version;
 518                 u16 command_pos;
 519
 520                 u16 major_version;
 521                 u16 minor_version;
 522
 523                 u16 func_ctrl;
 524                 u16 mac_status;
 525                 u16 generic_IRQ_type;
 526                 u8  reserved[2];
 527         } host_info;
 528
 529         enum {
 530                 STATION_STATE_SCANNING,
 531                 STATION_STATE_JOINNING,
 532                 STATION_STATE_AUTHENTICATING,
 533                 STATION_STATE_ASSOCIATING,
 534                 STATION_STATE_READY,
 535                 STATION_STATE_REASSOCIATING,
 536                 STATION_STATE_DOWN,
 537                 STATION_STATE_MGMT_ERROR
 538         } station_state;
 539
 540         int operating_mode, power_mode;
 541         time_t last_qual;
 542         int beacons_this_sec;
 543         int channel;
 544         int reg_domain, config_reg_domain;
 545         int tx_rate;
 546         int auto_tx_rate;
 547         int rts_threshold;
 548         int frag_threshold;
 549         int long_retry, short_retry;
 550         int preamble;
 551         int default_beacon_period, beacon_period, listen_interval;
 552         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 553         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 554         enum {
 555                 SITE_SURVEY_IDLE,
 556                 SITE_SURVEY_IN_PROGRESS,
 557                 SITE_SURVEY_COMPLETED
 558         } site_survey_state;
 559         time_t last_survey;
 560
 561         int station_was_associated, station_is_associated;
 562         int fast_scan;
 563
 564         struct bss_info {
 565                 int channel;
 566                 int SSIDsize;
 567                 int RSSI;
 568                 int UsingWEP;
 569                 int preamble;
 570                 int beacon_period;
 571                 int BSStype;
 572                 u8 BSSID[6];
 573                 u8 SSID[MAX_SSID_LENGTH];
 574         } BSSinfo[MAX_BSS_ENTRIES];
 575         int BSS_list_entries, current_BSS;
 576         int connect_to_any_BSS;
 577         int SSID_size, new_SSID_size;
 578         u8 CurrentBSSID[6], BSSID[6];
 579         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 580         u64 last_beacon_timestamp;
 581         u8 rx_buf[MAX_WIRELESS_BODY];
 582 };
 583
 584 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
 585
 586 static const struct {
 587         int reg_domain;
 588         int min, max;
 589         char *name;
 590 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 591                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 592                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 593                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 594                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 595                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 596                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 597                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 598
 599 static void build_wpa_mib(struct atmel_private *priv);
 600 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 601 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 602                                unsigned char *src, u16 len);
 603 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 604                                u16 src, u16 len);
 605 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 606 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 607 static int atmel_lock_mac(struct atmel_private *priv);
 608 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 609 static void atmel_command_irq(struct atmel_private *priv);
 610 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 611 static void atmel_management_frame(struct atmel_private *priv,
 612                                    struct ieee80211_hdr_4addr *header,
 613                                    u16 frame_len, u8 rssi);
 614 static void atmel_management_timer(u_long a);
 615 static void atmel_send_command(struct atmel_private *priv, int command,
 616                                void *cmd, int cmd_size);
 617 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 618                                    void *cmd, int cmd_size);
 619 static void atmel_transmit_management_frame(struct atmel_private *priv,
 620                                             struct ieee80211_hdr_4addr *header,
 621                                             u8 *body, int body_len);
 622
 623 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 624 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 625                            u8 data);
 626 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 627                             u16 data);
 628 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 629                           u8 *data, int data_len);
 630 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 631                           u8 *data, int data_len);
 632 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 633 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 634 static void atmel_smooth_qual(struct atmel_private *priv);
 635 static void atmel_writeAR(struct net_device *dev, u16 data);
 636 static int probe_atmel_card(struct net_device *dev);
 637 static int reset_atmel_card(struct net_device *dev );
 638 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 639 int atmel_open (struct net_device *dev);
 640
 641 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 642 {
 643         return priv->host_info_base + offset;
 644 }
 645
 646 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 647 {
 648         return priv->host_info.command_pos + offset;
 649 }
 650
 651 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 652 {
 653         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 654 }
 655
 656 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 657 {
 658         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 659 }
 660
 661 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 662 {
 663         return inb(dev->base_addr + offset);
 664 }
 665
 666 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 667 {
 668         outb(data, dev->base_addr + offset);
 669 }
 670
 671 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 672 {
 673         return inw(dev->base_addr + offset);
 674 }
 675
 676 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 677 {
 678         outw(data, dev->base_addr + offset);
 679 }
 680
 681 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 682 {
 683         atmel_writeAR(priv->dev, pos);
 684         return atmel_read8(priv->dev, DR);
 685 }
 686
 687 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 688 {
 689         atmel_writeAR(priv->dev, pos);
 690         atmel_write8(priv->dev, DR, data);
 691 }
 692
 693 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 694 {
 695         atmel_writeAR(priv->dev, pos);
 696         return atmel_read16(priv->dev, DR);
 697 }
 698
 699 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 700 {
 701         atmel_writeAR(priv->dev, pos);
 702         atmel_write16(priv->dev, DR, data);
 703 }
 704
 705 static const struct iw_handler_def atmel_handler_def;
 706
 707 static void tx_done_irq(struct atmel_private *priv)
 708 {
 709         int i;
 710
 711         for (i = 0;
 712              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 713                      i < priv->host_info.tx_desc_count;
 714              i++) {
 715                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 716                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 717                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 718
 719                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 720
 721                 priv->tx_free_mem += msdu_size;
 722                 priv->tx_desc_free++;
 723
 724                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 725                         priv->tx_buff_head = 0;
 726                 else
 727                         priv->tx_buff_head += msdu_size;
 728
 729                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 730                         priv->tx_desc_head++ ;
 731                 else
 732                         priv->tx_desc_head = 0;
 733
 734                 if (type == TX_PACKET_TYPE_DATA) {
 735                         if (status == TX_STATUS_SUCCESS)
 736                                 priv->stats.tx_packets++;
 737                         else
 738                                 priv->stats.tx_errors++;
 739                         netif_wake_queue(priv->dev);
 740                 }
 741         }
 742 }
 743
 744 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 745 {
 746         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 747
 748         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 749                 return 0;
 750
 751         if (bottom_free >= len)
 752                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 753
 754         if (priv->tx_free_mem - bottom_free >= len) {
 755                 priv->tx_buff_tail = 0;
 756                 return priv->host_info.tx_buff_pos;
 757         }
 758
 759         return 0;
 760 }
 761
 762 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 763                                  u16 len, u16 buff, u8 type)
 764 {
 765         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 766         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 767         if (!priv->use_wpa)
 768                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 769         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 770         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 771         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 772         if (priv->use_wpa) {
 773                 int cipher_type, cipher_length;
 774                 if (is_bcast) {
 775                         cipher_type = priv->group_cipher_suite;
 776                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 777                             cipher_type == CIPHER_SUITE_WEP_128)
 778                                 cipher_length = 8;
 779                         else if (cipher_type == CIPHER_SUITE_TKIP)
 780                                 cipher_length = 12;
 781                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 782                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 783                                 cipher_type = priv->pairwise_cipher_suite;
 784                                 cipher_length = 8;
 785                         } else {
 786                                 cipher_type = CIPHER_SUITE_NONE;
 787                                 cipher_length = 0;
 788                         }
 789                 } else {
 790                         cipher_type = priv->pairwise_cipher_suite;
 791                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 792                             cipher_type == CIPHER_SUITE_WEP_128)
 793                                 cipher_length = 8;
 794                         else if (cipher_type == CIPHER_SUITE_TKIP)
 795                                 cipher_length = 12;
 796                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 797                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 798                                 cipher_type = priv->group_cipher_suite;
 799                                 cipher_length = 8;
 800                         } else {
 801                                 cipher_type = CIPHER_SUITE_NONE;
 802                                 cipher_length = 0;
 803                         }
 804                 }
 805
 806                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 807                             cipher_type);
 808                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 809                             cipher_length);
 810         }
 811         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 812         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 813         if (priv->tx_desc_previous != priv->tx_desc_tail)
 814                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 815         priv->tx_desc_previous = priv->tx_desc_tail;
 816         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 817                 priv->tx_desc_tail++;
 818         else
 819                 priv->tx_desc_tail = 0;
 820         priv->tx_desc_free--;
 821         priv->tx_free_mem -= len;
 822 }
 823
 824 static int start_tx(struct sk_buff *skb, struct net_device *dev)
 825 {
 826         struct atmel_private *priv = netdev_priv(dev);
 827         struct ieee80211_hdr_4addr header;
 828         unsigned long flags;
 829         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 830         u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
 831
 832         if (priv->card && priv->present_callback &&
 833             !(*priv->present_callback)(priv->card)) {
 834                 priv->stats.tx_errors++;
 835                 dev_kfree_skb(skb);
 836                 return 0;
 837         }
 838
 839         if (priv->station_state != STATION_STATE_READY) {
 840                 priv->stats.tx_errors++;
 841                 dev_kfree_skb(skb);
 842                 return 0;
 843         }
 844
 845         /* first ensure the timer func cannot run */
 846         spin_lock_bh(&priv->timerlock);
 847         /* then stop the hardware ISR */
 848         spin_lock_irqsave(&priv->irqlock, flags);
 849         /* nb doing the above in the opposite order will deadlock */
 850
 851         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 852            12 first bytes (containing DA/SA) and put them in the appropriate
 853            fields of the Wireless Header. Thus the packet length is then the
 854            initial + 18 (+30-12) */
 855
 856         if (!(buff = find_tx_buff(priv, len + 18))) {
 857                 priv->stats.tx_dropped++;
 858                 spin_unlock_irqrestore(&priv->irqlock, flags);
 859                 spin_unlock_bh(&priv->timerlock);
 860                 netif_stop_queue(dev);
 861                 return 1;
 862         }
 863
 864         frame_ctl = IEEE80211_FTYPE_DATA;
 865         header.duration_id = 0;
 866         header.seq_ctl = 0;
 867         if (priv->wep_is_on)
 868                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 869         if (priv->operating_mode == IW_MODE_ADHOC) {
 870                 memcpy(&header.addr1, skb->data, 6);
 871                 memcpy(&header.addr2, dev->dev_addr, 6);
 872                 memcpy(&header.addr3, priv->BSSID, 6);
 873         } else {
 874                 frame_ctl |= IEEE80211_FCTL_TODS;
 875                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 876                 memcpy(&header.addr2, dev->dev_addr, 6);
 877                 memcpy(&header.addr3, skb->data, 6);
 878         }
 879
 880         if (priv->use_wpa)
 881                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 882
 883         header.frame_ctl = cpu_to_le16(frame_ctl);
 884         /* Copy the wireless header into the card */
 885         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 886         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 887         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 888         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 889
 890         /* low bit of first byte of destination tells us if broadcast */
 891         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 892         dev->trans_start = jiffies;
 893         priv->stats.tx_bytes += len;
 894
 895         spin_unlock_irqrestore(&priv->irqlock, flags);
 896         spin_unlock_bh(&priv->timerlock);
 897         dev_kfree_skb(skb);
 898
 899         return 0;
 900 }
 901
 902 static void atmel_transmit_management_frame(struct atmel_private *priv,
 903                                             struct ieee80211_hdr_4addr *header,
 904                                             u8 *body, int body_len)
 905 {
 906         u16 buff;
 907         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 908
 909         if (!(buff = find_tx_buff(priv, len)))
 910                 return;
 911
 912         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 913         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 914         priv->tx_buff_tail += len;
 915         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 916 }
 917
 918 static void fast_rx_path(struct atmel_private *priv,
 919                          struct ieee80211_hdr_4addr *header,
 920                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 921 {
 922         /* fast path: unfragmented packet copy directly into skbuf */
 923         u8 mac4[6];
 924         struct sk_buff  *skb;
 925         unsigned char *skbp;
 926
 927         /* get the final, mac 4 header field, this tells us encapsulation */
 928         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 929         msdu_size -= 6;
 930
 931         if (priv->do_rx_crc) {
 932                 crc = crc32_le(crc, mac4, 6);
 933                 msdu_size -= 4;
 934         }
 935
 936         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 937                 priv->stats.rx_dropped++;
 938                 return;
 939         }
 940
 941         skb_reserve(skb, 2);
 942         skbp = skb_put(skb, msdu_size + 12);
 943         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 944
 945         if (priv->do_rx_crc) {
 946                 u32 netcrc;
 947                 crc = crc32_le(crc, skbp + 12, msdu_size);
 948                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 949                 if ((crc ^ 0xffffffff) != netcrc) {
 950                         priv->stats.rx_crc_errors++;
 951                         dev_kfree_skb(skb);
 952                         return;
 953                 }
 954         }
 955
 956         memcpy(skbp, header->addr1, 6); /* destination address */
 957         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 958                 memcpy(&skbp[6], header->addr3, 6);
 959         else
 960                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 961
 962         priv->dev->last_rx = jiffies;
 963         skb->dev = priv->dev;
 964         skb->protocol = eth_type_trans(skb, priv->dev);
 965         skb->ip_summed = CHECKSUM_NONE;
 966         netif_rx(skb);
 967         priv->stats.rx_bytes += 12 + msdu_size;
 968         priv->stats.rx_packets++;
 969 }
 970
 971 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 972    It doesn't matter that this is slow: it is only used to proble the first few
 973    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,
 994                          struct ieee80211_hdr_4addr *header,
 995                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 996                          u8 frag_no, int more_frags)
 997 {
 998         u8 mac4[6];
 999         u8 source[6];
1000         struct sk_buff *skb;
1001
1002         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
1003                 memcpy(source, header->addr3, 6);
1004         else
1005                 memcpy(source, header->addr2, 6);
1006
1007         rx_packet_loc += 24; /* skip header */
1008
1009         if (priv->do_rx_crc)
1010                 msdu_size -= 4;
1011
1012         if (frag_no == 0) { /* first fragment */
1013                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
1014                 msdu_size -= 6;
1015                 rx_packet_loc += 6;
1016
1017                 if (priv->do_rx_crc)
1018                         crc = crc32_le(crc, mac4, 6);
1019
1020                 priv->frag_seq = seq_no;
1021                 priv->frag_no = 1;
1022                 priv->frag_len = msdu_size;
1023                 memcpy(priv->frag_source, source, 6);
1024                 memcpy(&priv->rx_buf[6], source, 6);
1025                 memcpy(priv->rx_buf, header->addr1, 6);
1026
1027                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1028
1029                 if (priv->do_rx_crc) {
1030                         u32 netcrc;
1031                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1032                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1033                         if ((crc ^ 0xffffffff) != netcrc) {
1034                                 priv->stats.rx_crc_errors++;
1035                                 memset(priv->frag_source, 0xff, 6);
1036                         }
1037                 }
1038
1039         } else if (priv->frag_no == frag_no &&
1040                    priv->frag_seq == seq_no &&
1041                    memcmp(priv->frag_source, source, 6) == 0) {
1042
1043                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1044                                    rx_packet_loc, msdu_size);
1045                 if (priv->do_rx_crc) {
1046                         u32 netcrc;
1047                         crc = crc32_le(crc,
1048                                        &priv->rx_buf[12 + priv->frag_len],
1049                                        msdu_size);
1050                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1051                         if ((crc ^ 0xffffffff) != netcrc) {
1052                                 priv->stats.rx_crc_errors++;
1053                                 memset(priv->frag_source, 0xff, 6);
1054                                 more_frags = 1; /* don't send broken assembly */
1055                         }
1056                 }
1057
1058                 priv->frag_len += msdu_size;
1059                 priv->frag_no++;
1060
1061                 if (!more_frags) { /* last one */
1062                         memset(priv->frag_source, 0xff, 6);
1063                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1064                                 priv->stats.rx_dropped++;
1065                         } else {
1066                                 skb_reserve(skb, 2);
1067                                 memcpy(skb_put(skb, priv->frag_len + 12),
1068                                        priv->rx_buf,
1069                                        priv->frag_len + 12);
1070                                 priv->dev->last_rx = jiffies;
1071                                 skb->dev = priv->dev;
1072                                 skb->protocol = eth_type_trans(skb, priv->dev);
1073                                 skb->ip_summed = CHECKSUM_NONE;
1074                                 netif_rx(skb);
1075                                 priv->stats.rx_bytes += priv->frag_len + 12;
1076                                 priv->stats.rx_packets++;
1077                         }
1078                 }
1079         } else
1080                 priv->wstats.discard.fragment++;
1081 }
1082
1083 static void rx_done_irq(struct atmel_private *priv)
1084 {
1085         int i;
1086         struct ieee80211_hdr_4addr header;
1087
1088         for (i = 0;
1089              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1090                      i < priv->host_info.rx_desc_count;
1091              i++) {
1092
1093                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1094                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1095                 u32 crc = 0xffffffff;
1096
1097                 if (status != RX_STATUS_SUCCESS) {
1098                         if (status == 0xc1) /* determined by experiment */
1099                                 priv->wstats.discard.nwid++;
1100                         else
1101                                 priv->stats.rx_errors++;
1102                         goto next;
1103                 }
1104
1105                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1106                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1107
1108                 if (msdu_size < 30) {
1109                         priv->stats.rx_errors++;
1110                         goto next;
1111                 }
1112
1113                 /* Get header as far as end of seq_ctl */
1114                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1115                 frame_ctl = le16_to_cpu(header.frame_ctl);
1116                 seq_control = le16_to_cpu(header.seq_ctl);
1117
1118                 /* probe for CRC use here if needed  once five packets have
1119                    arrived with the same crc status, we assume we know what's
1120                    happening and stop probing */
1121                 if (priv->probe_crc) {
1122                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1123                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1124                         } else {
1125                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1126                         }
1127                         if (priv->do_rx_crc) {
1128                                 if (priv->crc_ok_cnt++ > 5)
1129                                         priv->probe_crc = 0;
1130                         } else {
1131                                 if (priv->crc_ko_cnt++ > 5)
1132                                         priv->probe_crc = 0;
1133                         }
1134                 }
1135
1136                 /* don't CRC header when WEP in use */
1137                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1138                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1139                 }
1140                 msdu_size -= 24; /* header */
1141
1142                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1143                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1144                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1145                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1146
1147                         if (!more_fragments && packet_fragment_no == 0) {
1148                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1149                         } else {
1150                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1151                                              packet_sequence_no, packet_fragment_no, more_fragments);
1152                         }
1153                 }
1154
1155                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1156                         /* copy rest of packet into buffer */
1157                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1158
1159                         /* we use the same buffer for frag reassembly and control packets */
1160                         memset(priv->frag_source, 0xff, 6);
1161
1162                         if (priv->do_rx_crc) {
1163                                 /* last 4 octets is crc */
1164                                 msdu_size -= 4;
1165                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1166                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1167                                         priv->stats.rx_crc_errors++;
1168                                         goto next;
1169                                 }
1170                         }
1171
1172                         atmel_management_frame(priv, &header, msdu_size,
1173                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1174                 }
1175
1176 next:
1177                 /* release descriptor */
1178                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1179
1180                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1181                         priv->rx_desc_head++;
1182                 else
1183                         priv->rx_desc_head = 0;
1184         }
1185 }
1186
1187 static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1188 {
1189         struct net_device *dev = (struct net_device *) dev_id;
1190         struct atmel_private *priv = netdev_priv(dev);
1191         u8 isr;
1192         int i = -1;
1193         static u8 irq_order[] = {
1194                 ISR_OUT_OF_RANGE,
1195                 ISR_RxCOMPLETE,
1196                 ISR_TxCOMPLETE,
1197                 ISR_RxFRAMELOST,
1198                 ISR_FATAL_ERROR,
1199                 ISR_COMMAND_COMPLETE,
1200                 ISR_IBSS_MERGE,
1201                 ISR_GENERIC_IRQ
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 static struct net_device_stats *atmel_get_stats(struct net_device *dev)
1295 {
1296         struct atmel_private *priv = netdev_priv(dev);
1297         return &priv->stats;
1298 }
1299
1300 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1301 {
1302         struct atmel_private *priv = netdev_priv(dev);
1303
1304         /* update the link quality here in case we are seeing no beacons
1305            at all to drive the process */
1306         atmel_smooth_qual(priv);
1307
1308         priv->wstats.status = priv->station_state;
1309
1310         if (priv->operating_mode == IW_MODE_INFRA) {
1311                 if (priv->station_state != STATION_STATE_READY) {
1312                         priv->wstats.qual.qual = 0;
1313                         priv->wstats.qual.level = 0;
1314                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1315                                         | IW_QUAL_LEVEL_INVALID);
1316                 }
1317                 priv->wstats.qual.noise = 0;
1318                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1319         } else {
1320                 /* Quality levels cannot be determined in ad-hoc mode,
1321                    because we can 'hear' more that one remote station. */
1322                 priv->wstats.qual.qual = 0;
1323                 priv->wstats.qual.level = 0;
1324                 priv->wstats.qual.noise = 0;
1325                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1326                                         | IW_QUAL_LEVEL_INVALID
1327                                         | IW_QUAL_NOISE_INVALID;
1328                 priv->wstats.miss.beacon = 0;
1329         }
1330
1331         return &priv->wstats;
1332 }
1333
1334 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1335 {
1336         if ((new_mtu < 68) || (new_mtu > 2312))
1337                 return -EINVAL;
1338         dev->mtu = new_mtu;
1339         return 0;
1340 }
1341
1342 static int atmel_set_mac_address(struct net_device *dev, void *p)
1343 {
1344         struct sockaddr *addr = p;
1345
1346         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1347         return atmel_open(dev);
1348 }
1349
1350 EXPORT_SYMBOL(atmel_open);
1351
1352 int atmel_open(struct net_device *dev)
1353 {
1354         struct atmel_private *priv = netdev_priv(dev);
1355         int i, channel;
1356
1357         /* any scheduled timer is no longer needed and might screw things up.. */
1358         del_timer_sync(&priv->management_timer);
1359
1360         /* Interrupts will not touch the card once in this state... */
1361         priv->station_state = STATION_STATE_DOWN;
1362
1363         if (priv->new_SSID_size) {
1364                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1365                 priv->SSID_size = priv->new_SSID_size;
1366                 priv->new_SSID_size = 0;
1367         }
1368         priv->BSS_list_entries = 0;
1369
1370         priv->AuthenticationRequestRetryCnt = 0;
1371         priv->AssociationRequestRetryCnt = 0;
1372         priv->ReAssociationRequestRetryCnt = 0;
1373         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1374         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1375
1376         priv->site_survey_state = SITE_SURVEY_IDLE;
1377         priv->station_is_associated = 0;
1378
1379         if (!reset_atmel_card(dev))
1380                 return -EAGAIN;
1381
1382         if (priv->config_reg_domain) {
1383                 priv->reg_domain = priv->config_reg_domain;
1384                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1385         } else {
1386                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1387                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1388                         if (priv->reg_domain == channel_table[i].reg_domain)
1389                                 break;
1390                 if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
1391                         priv->reg_domain = REG_DOMAIN_MKK1;
1392                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1393                 }
1394         }
1395
1396         if ((channel = atmel_validate_channel(priv, priv->channel)))
1397                 priv->channel = channel;
1398
1399         /* this moves station_state on.... */
1400         atmel_scan(priv, 1);
1401
1402         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1403         return 0;
1404 }
1405
1406 static int atmel_close(struct net_device *dev)
1407 {
1408         struct atmel_private *priv = netdev_priv(dev);
1409
1410         /* Send event to userspace that we are disassociating */
1411         if (priv->station_state == STATION_STATE_READY) {
1412                 union iwreq_data wrqu;
1413
1414                 wrqu.data.length = 0;
1415                 wrqu.data.flags = 0;
1416                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1417                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1418                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1419         }
1420
1421         atmel_enter_state(priv, STATION_STATE_DOWN);
1422
1423         if (priv->bus_type == BUS_TYPE_PCCARD)
1424                 atmel_write16(dev, GCR, 0x0060);
1425         atmel_write16(dev, GCR, 0x0040);
1426         return 0;
1427 }
1428
1429 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1430 {
1431         /* check that channel is OK, if so return zero,
1432            else return suitable default channel */
1433         int i;
1434
1435         for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1436                 if (priv->reg_domain == channel_table[i].reg_domain) {
1437                         if (channel >= channel_table[i].min &&
1438                             channel <= channel_table[i].max)
1439                                 return 0;
1440                         else
1441                                 return channel_table[i].min;
1442                 }
1443         return 0;
1444 }
1445
1446 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1447 {
1448         int i;
1449         char *p = buf;
1450         char *s, *r, *c;
1451
1452         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1453                      DRIVER_MAJOR, DRIVER_MINOR);
1454
1455         if (priv->station_state != STATION_STATE_DOWN) {
1456                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1457                                 "Firmware location:\t",
1458                              priv->host_info.major_version,
1459                              priv->host_info.minor_version,
1460                              priv->host_info.build_version);
1461
1462                 if (priv->card_type != CARD_TYPE_EEPROM)
1463                         p += sprintf(p, "on card\n");
1464                 else if (priv->firmware)
1465                         p += sprintf(p, "%s loaded by host\n",
1466                                      priv->firmware_id);
1467                 else
1468                         p += sprintf(p, "%s loaded by hotplug\n",
1469                                      priv->firmware_id);
1470
1471                 switch (priv->card_type) {
1472                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1473                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1474                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1475                 default: c = "<unknown>";
1476                 }
1477
1478                 r = "<unknown>";
1479                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1480                         if (priv->reg_domain == channel_table[i].reg_domain)
1481                                 r = channel_table[i].name;
1482
1483                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1484                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1485                 p += sprintf(p, "Host CRC checking:\t%s\n",
1486                              priv->do_rx_crc ? "On" : "Off");
1487                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1488                              priv->use_wpa ? "Yes" : "No");
1489         }
1490
1491         switch(priv->station_state) {
1492         case STATION_STATE_SCANNING: s = "Scanning"; break;
1493         case STATION_STATE_JOINNING: s = "Joining"; break;
1494         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1495         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1496         case STATION_STATE_READY: s = "Ready"; break;
1497         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1498         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1499         case STATION_STATE_DOWN: s = "Down"; break;
1500         default: s = "<unknown>";
1501         }
1502
1503         p += sprintf(p, "Current state:\t\t%s\n", s);
1504         return p - buf;
1505 }
1506
1507 static int atmel_read_proc(char *page, char **start, off_t off,
1508                            int count, int *eof, void *data)
1509 {
1510         struct atmel_private *priv = data;
1511         int len = atmel_proc_output (page, priv);
1512         if (len <= off+count) *eof = 1;
1513         *start = page + off;
1514         len -= off;
1515         if (len>count) len = count;
1516         if (len<0) len = 0;
1517         return len;
1518 }
1519
1520 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1521                                    const AtmelFWType fw_type,
1522                                    struct device *sys_dev,
1523                                    int (*card_present)(void *), void *card)
1524 {
1525         struct proc_dir_entry *ent;
1526         struct net_device *dev;
1527         struct atmel_private *priv;
1528         int rc;
1529
1530         /* Create the network device object. */
1531         dev = alloc_etherdev(sizeof(*priv));
1532         if (!dev) {
1533                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1534                 return NULL;
1535         }
1536         if (dev_alloc_name(dev, dev->name) < 0) {
1537                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1538                 goto err_out_free;
1539         }
1540
1541         priv = netdev_priv(dev);
1542         priv->dev = dev;
1543         priv->sys_dev = sys_dev;
1544         priv->present_callback = card_present;
1545         priv->card = card;
1546         priv->firmware = NULL;
1547         priv->firmware_id[0] = '\0';
1548         priv->firmware_type = fw_type;
1549         if (firmware) /* module parameter */
1550                 strcpy(priv->firmware_id, firmware);
1551         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1552         priv->station_state = STATION_STATE_DOWN;
1553         priv->do_rx_crc = 0;
1554         /* For PCMCIA cards, some chips need CRC, some don't
1555            so we have to probe. */
1556         if (priv->bus_type == BUS_TYPE_PCCARD) {
1557                 priv->probe_crc = 1;
1558                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1559         } else
1560                 priv->probe_crc = 0;
1561         memset(&priv->stats, 0, sizeof(priv->stats));
1562         memset(&priv->wstats, 0, sizeof(priv->wstats));
1563         priv->last_qual = jiffies;
1564         priv->last_beacon_timestamp = 0;
1565         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1566         memset(priv->BSSID, 0, 6);
1567         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1568         priv->station_was_associated = 0;
1569
1570         priv->last_survey = jiffies;
1571         priv->preamble = LONG_PREAMBLE;
1572         priv->operating_mode = IW_MODE_INFRA;
1573         priv->connect_to_any_BSS = 0;
1574         priv->config_reg_domain = 0;
1575         priv->reg_domain = 0;
1576         priv->tx_rate = 3;
1577         priv->auto_tx_rate = 1;
1578         priv->channel = 4;
1579         priv->power_mode = 0;
1580         priv->SSID[0] = '\0';
1581         priv->SSID_size = 0;
1582         priv->new_SSID_size = 0;
1583         priv->frag_threshold = 2346;
1584         priv->rts_threshold = 2347;
1585         priv->short_retry = 7;
1586         priv->long_retry = 4;
1587
1588         priv->wep_is_on = 0;
1589         priv->default_key = 0;
1590         priv->encryption_level = 0;
1591         priv->exclude_unencrypted = 0;
1592         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1593         priv->use_wpa = 0;
1594         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1595         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1596
1597         priv->default_beacon_period = priv->beacon_period = 100;
1598         priv->listen_interval = 1;
1599
1600         init_timer(&priv->management_timer);
1601         spin_lock_init(&priv->irqlock);
1602         spin_lock_init(&priv->timerlock);
1603         priv->management_timer.function = atmel_management_timer;
1604         priv->management_timer.data = (unsigned long) dev;
1605
1606         dev->open = atmel_open;
1607         dev->stop = atmel_close;
1608         dev->change_mtu = atmel_change_mtu;
1609         dev->set_mac_address = atmel_set_mac_address;
1610         dev->hard_start_xmit = start_tx;
1611         dev->get_stats = atmel_get_stats;
1612         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1613         dev->do_ioctl = atmel_ioctl;
1614         dev->irq = irq;
1615         dev->base_addr = port;
1616
1617         SET_NETDEV_DEV(dev, sys_dev);
1618
1619         if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
1620                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1621                 goto err_out_free;
1622         }
1623
1624         if (!request_region(dev->base_addr, 32,
1625                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1626                 goto err_out_irq;
1627         }
1628
1629         if (register_netdev(dev))
1630                 goto err_out_res;
1631
1632         if (!probe_atmel_card(dev)){
1633                 unregister_netdev(dev);
1634                 goto err_out_res;
1635         }
1636
1637         netif_carrier_off(dev);
1638
1639         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1640         if (!ent)
1641                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1642
1643         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
1644                dev->name, DRIVER_MAJOR, DRIVER_MINOR,
1645                dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1646                dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
1647
1648         SET_MODULE_OWNER(dev);
1649         return dev;
1650
1651 err_out_res:
1652         release_region( dev->base_addr, 32);
1653 err_out_irq:
1654         free_irq(dev->irq, dev);
1655 err_out_free:
1656         free_netdev(dev);
1657         return NULL;
1658 }
1659
1660 EXPORT_SYMBOL(init_atmel_card);
1661
1662 void stop_atmel_card(struct net_device *dev)
1663 {
1664         struct atmel_private *priv = netdev_priv(dev);
1665
1666         /* put a brick on it... */
1667         if (priv->bus_type == BUS_TYPE_PCCARD)
1668                 atmel_write16(dev, GCR, 0x0060);
1669         atmel_write16(dev, GCR, 0x0040);
1670
1671         del_timer_sync(&priv->management_timer);
1672         unregister_netdev(dev);
1673         remove_proc_entry("driver/atmel", NULL);
1674         free_irq(dev->irq, dev);
1675         kfree(priv->firmware);
1676         release_region(dev->base_addr, 32);
1677         free_netdev(dev);
1678 }
1679
1680 EXPORT_SYMBOL(stop_atmel_card);
1681
1682 static int atmel_set_essid(struct net_device *dev,
1683                            struct iw_request_info *info,
1684                            struct iw_point *dwrq,
1685                            char *extra)
1686 {
1687         struct atmel_private *priv = netdev_priv(dev);
1688
1689         /* Check if we asked for `any' */
1690         if(dwrq->flags == 0) {
1691                 priv->connect_to_any_BSS = 1;
1692         } else {
1693                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1694
1695                 priv->connect_to_any_BSS = 0;
1696
1697                 /* Check the size of the string */
1698                 if (dwrq->length > MAX_SSID_LENGTH + 1)
1699                          return -E2BIG;
1700                 if (index != 0)
1701                         return -EINVAL;
1702
1703                 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1704                 priv->new_SSID_size = dwrq->length - 1;
1705         }
1706
1707         return -EINPROGRESS;
1708 }
1709
1710 static int atmel_get_essid(struct net_device *dev,
1711                            struct iw_request_info *info,
1712                            struct iw_point *dwrq,
1713                            char *extra)
1714 {
1715         struct atmel_private *priv = netdev_priv(dev);
1716
1717         /* Get the current SSID */
1718         if (priv->new_SSID_size != 0) {
1719                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1720                 extra[priv->new_SSID_size] = '\0';
1721                 dwrq->length = priv->new_SSID_size;
1722         } else {
1723                 memcpy(extra, priv->SSID, priv->SSID_size);
1724                 extra[priv->SSID_size] = '\0';
1725                 dwrq->length = priv->SSID_size;
1726         }
1727
1728         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1729
1730         return 0;
1731 }
1732
1733 static int atmel_get_wap(struct net_device *dev,
1734                          struct iw_request_info *info,
1735                          struct sockaddr *awrq,
1736                          char *extra)
1737 {
1738         struct atmel_private *priv = netdev_priv(dev);
1739         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1740         awrq->sa_family = ARPHRD_ETHER;
1741
1742         return 0;
1743 }
1744
1745 static int atmel_set_encode(struct net_device *dev,
1746                             struct iw_request_info *info,
1747                             struct iw_point *dwrq,
1748                             char *extra)
1749 {
1750         struct atmel_private *priv = netdev_priv(dev);
1751
1752         /* Basic checking: do we have a key to set ?
1753          * Note : with the new API, it's impossible to get a NULL pointer.
1754          * Therefore, we need to check a key size == 0 instead.
1755          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1756          * when no key is present (only change flags), but older versions
1757          * don't do it. - Jean II */
1758         if (dwrq->length > 0) {
1759                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1760                 int current_index = priv->default_key;
1761                 /* Check the size of the key */
1762                 if (dwrq->length > 13) {
1763                         return -EINVAL;
1764                 }
1765                 /* Check the index (none -> use current) */
1766                 if (index < 0 || index >= 4)
1767                         index = current_index;
1768                 else
1769                         priv->default_key = index;
1770                 /* Set the length */
1771                 if (dwrq->length > 5)
1772                         priv->wep_key_len[index] = 13;
1773                 else
1774                         if (dwrq->length > 0)
1775                                 priv->wep_key_len[index] = 5;
1776                         else
1777                                 /* Disable the key */
1778                                 priv->wep_key_len[index] = 0;
1779                 /* Check if the key is not marked as invalid */
1780                 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1781                         /* Cleanup */
1782                         memset(priv->wep_keys[index], 0, 13);
1783                         /* Copy the key in the driver */
1784                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1785                 }
1786                 /* WE specify that if a valid key is set, encryption
1787                  * should be enabled (user may turn it off later)
1788                  * This is also how "iwconfig ethX key on" works */
1789                 if (index == current_index &&
1790                     priv->wep_key_len[index] > 0) {
1791                         priv->wep_is_on = 1;
1792                         priv->exclude_unencrypted = 1;
1793                         if (priv->wep_key_len[index] > 5) {
1794                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1795                                 priv->encryption_level = 2;
1796                         } else {
1797                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1798                                 priv->encryption_level = 1;
1799                         }
1800                 }
1801         } else {
1802                 /* Do we want to just set the transmit key index ? */
1803                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1804                 if (index >= 0 && index < 4) {
1805                         priv->default_key = index;
1806                 } else
1807                         /* Don't complain if only change the mode */
1808                         if (!dwrq->flags & IW_ENCODE_MODE) {
1809                                 return -EINVAL;
1810                         }
1811         }
1812         /* Read the flags */
1813         if (dwrq->flags & IW_ENCODE_DISABLED) {
1814                 priv->wep_is_on = 0;
1815                 priv->encryption_level = 0;
1816                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1817         } else {
1818                 priv->wep_is_on = 1;
1819                 if (priv->wep_key_len[priv->default_key] > 5) {
1820                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1821                         priv->encryption_level = 2;
1822                 } else {
1823                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1824                         priv->encryption_level = 1;
1825                 }
1826         }
1827         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1828                 priv->exclude_unencrypted = 1;
1829         if(dwrq->flags & IW_ENCODE_OPEN)
1830                 priv->exclude_unencrypted = 0;
1831
1832         return -EINPROGRESS;            /* Call commit handler */
1833 }
1834
1835 static int atmel_get_encode(struct net_device *dev,
1836                             struct iw_request_info *info,
1837                             struct iw_point *dwrq,
1838                             char *extra)
1839 {
1840         struct atmel_private *priv = netdev_priv(dev);
1841         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1842
1843         if (!priv->wep_is_on)
1844                 dwrq->flags = IW_ENCODE_DISABLED;
1845         else {
1846                 if (priv->exclude_unencrypted)
1847                         dwrq->flags = IW_ENCODE_RESTRICTED;
1848                 else
1849                         dwrq->flags = IW_ENCODE_OPEN;
1850         }
1851                 /* Which key do we want ? -1 -> tx index */
1852         if (index < 0 || index >= 4)
1853                 index = priv->default_key;
1854         dwrq->flags |= index + 1;
1855         /* Copy the key to the user buffer */
1856         dwrq->length = priv->wep_key_len[index];
1857         if (dwrq->length > 16) {
1858                 dwrq->length=0;
1859         } else {
1860                 memset(extra, 0, 16);
1861                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1862         }
1863
1864         return 0;
1865 }
1866
1867 static int atmel_set_encodeext(struct net_device *dev,
1868                             struct iw_request_info *info,
1869                             union iwreq_data *wrqu,
1870                             char *extra)
1871 {
1872         struct atmel_private *priv = netdev_priv(dev);
1873         struct iw_point *encoding = &wrqu->encoding;
1874         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1875         int idx, key_len, alg = ext->alg, set_key = 1;
1876
1877         /* Determine and validate the key index */
1878         idx = encoding->flags & IW_ENCODE_INDEX;
1879         if (idx) {
1880                 if (idx < 1 || idx > WEP_KEYS)
1881                         return -EINVAL;
1882                 idx--;
1883         } else
1884                 idx = priv->default_key;
1885
1886         if (encoding->flags & IW_ENCODE_DISABLED)
1887             alg = IW_ENCODE_ALG_NONE;
1888
1889         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1890                 priv->default_key = idx;
1891                 set_key = ext->key_len > 0 ? 1 : 0;
1892         }
1893
1894         if (set_key) {
1895                 /* Set the requested key first */
1896                 switch (alg) {
1897                 case IW_ENCODE_ALG_NONE:
1898                         priv->wep_is_on = 0;
1899                         priv->encryption_level = 0;
1900                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1901                         break;
1902                 case IW_ENCODE_ALG_WEP:
1903                         if (ext->key_len > 5) {
1904                                 priv->wep_key_len[idx] = 13;
1905                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1906                                 priv->encryption_level = 2;
1907                         } else if (ext->key_len > 0) {
1908                                 priv->wep_key_len[idx] = 5;
1909                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1910                                 priv->encryption_level = 1;
1911                         } else {
1912                                 return -EINVAL;
1913                         }
1914                         priv->wep_is_on = 1;
1915                         memset(priv->wep_keys[idx], 0, 13);
1916                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1917                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1918                         break;
1919                 default:
1920                         return -EINVAL;
1921                 }
1922         }
1923
1924         return -EINPROGRESS;
1925 }
1926
1927 static int atmel_get_encodeext(struct net_device *dev,
1928                             struct iw_request_info *info,
1929                             union iwreq_data *wrqu,
1930                             char *extra)
1931 {
1932         struct atmel_private *priv = netdev_priv(dev);
1933         struct iw_point *encoding = &wrqu->encoding;
1934         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1935         int idx, max_key_len;
1936
1937         max_key_len = encoding->length - sizeof(*ext);
1938         if (max_key_len < 0)
1939                 return -EINVAL;
1940
1941         idx = encoding->flags & IW_ENCODE_INDEX;
1942         if (idx) {
1943                 if (idx < 1 || idx > WEP_KEYS)
1944                         return -EINVAL;
1945                 idx--;
1946         } else
1947                 idx = priv->default_key;
1948
1949         encoding->flags = idx + 1;
1950         memset(ext, 0, sizeof(*ext));
1951
1952         if (!priv->wep_is_on) {
1953                 ext->alg = IW_ENCODE_ALG_NONE;
1954                 ext->key_len = 0;
1955                 encoding->flags |= IW_ENCODE_DISABLED;
1956         } else {
1957                 if (priv->encryption_level > 0)
1958                         ext->alg = IW_ENCODE_ALG_WEP;
1959                 else
1960                         return -EINVAL;
1961
1962                 ext->key_len = priv->wep_key_len[idx];
1963                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1964                 encoding->flags |= IW_ENCODE_ENABLED;
1965         }
1966
1967         return 0;
1968 }
1969
1970 static int atmel_set_auth(struct net_device *dev,
1971                                struct iw_request_info *info,
1972                                union iwreq_data *wrqu, char *extra)
1973 {
1974         struct atmel_private *priv = netdev_priv(dev);
1975         struct iw_param *param = &wrqu->param;
1976
1977         switch (param->flags & IW_AUTH_INDEX) {
1978         case IW_AUTH_WPA_VERSION:
1979         case IW_AUTH_CIPHER_PAIRWISE:
1980         case IW_AUTH_CIPHER_GROUP:
1981         case IW_AUTH_KEY_MGMT:
1982         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1983         case IW_AUTH_PRIVACY_INVOKED:
1984                 /*
1985                  * atmel does not use these parameters
1986                  */
1987                 break;
1988
1989         case IW_AUTH_DROP_UNENCRYPTED:
1990                 priv->exclude_unencrypted = param->value ? 1 : 0;
1991                 break;
1992
1993         case IW_AUTH_80211_AUTH_ALG: {
1994                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1995                                 priv->exclude_unencrypted = 1;
1996                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1997                                 priv->exclude_unencrypted = 0;
1998                         } else
1999                                 return -EINVAL;
2000                         break;
2001                 }
2002
2003         case IW_AUTH_WPA_ENABLED:
2004                 /* Silently accept disable of WPA */
2005                 if (param->value > 0)
2006                         return -EOPNOTSUPP;
2007                 break;
2008
2009         default:
2010                 return -EOPNOTSUPP;
2011         }
2012         return -EINPROGRESS;
2013 }
2014
2015 static int atmel_get_auth(struct net_device *dev,
2016                                struct iw_request_info *info,
2017                                union iwreq_data *wrqu, char *extra)
2018 {
2019         struct atmel_private *priv = netdev_priv(dev);
2020         struct iw_param *param = &wrqu->param;
2021
2022         switch (param->flags & IW_AUTH_INDEX) {
2023         case IW_AUTH_DROP_UNENCRYPTED:
2024                 param->value = priv->exclude_unencrypted;
2025                 break;
2026
2027         case IW_AUTH_80211_AUTH_ALG:
2028                 if (priv->exclude_unencrypted == 1)
2029                         param->value = IW_AUTH_ALG_SHARED_KEY;
2030                 else
2031                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2032                 break;
2033
2034         case IW_AUTH_WPA_ENABLED:
2035                 param->value = 0;
2036                 break;
2037
2038         default:
2039                 return -EOPNOTSUPP;
2040         }
2041         return 0;
2042 }
2043
2044
2045 static int atmel_get_name(struct net_device *dev,
2046                           struct iw_request_info *info,
2047                           char *cwrq,
2048                           char *extra)
2049 {
2050         strcpy(cwrq, "IEEE 802.11-DS");
2051         return 0;
2052 }
2053
2054 static int atmel_set_rate(struct net_device *dev,
2055                           struct iw_request_info *info,
2056                           struct iw_param *vwrq,
2057                           char *extra)
2058 {
2059         struct atmel_private *priv = netdev_priv(dev);
2060
2061         if (vwrq->fixed == 0) {
2062                 priv->tx_rate = 3;
2063                 priv->auto_tx_rate = 1;
2064         } else {
2065                 priv->auto_tx_rate = 0;
2066
2067                 /* Which type of value ? */
2068                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2069                         /* Setting by rate index */
2070                         priv->tx_rate = vwrq->value;
2071                 } else {
2072                 /* Setting by frequency value */
2073                         switch (vwrq->value) {
2074                         case  1000000: priv->tx_rate = 0; break;
2075                         case  2000000: priv->tx_rate = 1; break;
2076                         case  5500000: priv->tx_rate = 2; break;
2077                         case 11000000: priv->tx_rate = 3; break;
2078                         default: return -EINVAL;
2079                         }
2080                 }
2081         }
2082
2083         return -EINPROGRESS;
2084 }
2085
2086 static int atmel_set_mode(struct net_device *dev,
2087                           struct iw_request_info *info,
2088                           __u32 *uwrq,
2089                           char *extra)
2090 {
2091         struct atmel_private *priv = netdev_priv(dev);
2092
2093         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2094                 return -EINVAL;
2095
2096         priv->operating_mode = *uwrq;
2097         return -EINPROGRESS;
2098 }
2099
2100 static int atmel_get_mode(struct net_device *dev,
2101                           struct iw_request_info *info,
2102                           __u32 *uwrq,
2103                           char *extra)
2104 {
2105         struct atmel_private *priv = netdev_priv(dev);
2106
2107         *uwrq = priv->operating_mode;
2108         return 0;
2109 }
2110
2111 static int atmel_get_rate(struct net_device *dev,
2112                          struct iw_request_info *info,
2113                          struct iw_param *vwrq,
2114                          char *extra)
2115 {
2116         struct atmel_private *priv = netdev_priv(dev);
2117
2118         if (priv->auto_tx_rate) {
2119                 vwrq->fixed = 0;
2120                 vwrq->value = 11000000;
2121         } else {
2122                 vwrq->fixed = 1;
2123                 switch(priv->tx_rate) {
2124                 case 0: vwrq->value =  1000000; break;
2125                 case 1: vwrq->value =  2000000; break;
2126                 case 2: vwrq->value =  5500000; break;
2127                 case 3: vwrq->value = 11000000; break;
2128                 }
2129         }
2130         return 0;
2131 }
2132
2133 static int atmel_set_power(struct net_device *dev,
2134                            struct iw_request_info *info,
2135                            struct iw_param *vwrq,
2136                            char *extra)
2137 {
2138         struct atmel_private *priv = netdev_priv(dev);
2139         priv->power_mode = vwrq->disabled ? 0 : 1;
2140         return -EINPROGRESS;
2141 }
2142
2143 static int atmel_get_power(struct net_device *dev,
2144                            struct iw_request_info *info,
2145                            struct iw_param *vwrq,
2146                            char *extra)
2147 {
2148         struct atmel_private *priv = netdev_priv(dev);
2149         vwrq->disabled = priv->power_mode ? 0 : 1;
2150         vwrq->flags = IW_POWER_ON;
2151         return 0;
2152 }
2153
2154 static int atmel_set_retry(struct net_device *dev,
2155                            struct iw_request_info *info,
2156                            struct iw_param *vwrq,
2157                            char *extra)
2158 {
2159         struct atmel_private *priv = netdev_priv(dev);
2160
2161         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2162                 if (vwrq->flags & IW_RETRY_MAX)
2163                         priv->long_retry = vwrq->value;
2164                 else if (vwrq->flags & IW_RETRY_MIN)
2165                         priv->short_retry = vwrq->value;
2166                 else {
2167                         /* No modifier : set both */
2168                         priv->long_retry = vwrq->value;
2169                         priv->short_retry = vwrq->value;
2170                 }
2171                 return -EINPROGRESS;
2172         }
2173
2174         return -EINVAL;
2175 }
2176
2177 static int atmel_get_retry(struct net_device *dev,
2178                            struct iw_request_info *info,
2179                            struct iw_param *vwrq,
2180                            char *extra)
2181 {
2182         struct atmel_private *priv = netdev_priv(dev);
2183
2184         vwrq->disabled = 0;      /* Can't be disabled */
2185
2186         /* Note : by default, display the min retry number */
2187         if (vwrq->flags & IW_RETRY_MAX) {
2188                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
2189                 vwrq->value = priv->long_retry;
2190         } else {
2191                 vwrq->flags = IW_RETRY_LIMIT;
2192                 vwrq->value = priv->short_retry;
2193                 if (priv->long_retry != priv->short_retry)
2194                         vwrq->flags |= IW_RETRY_MIN;
2195         }
2196
2197         return 0;
2198 }
2199
2200 static int atmel_set_rts(struct net_device *dev,
2201                          struct iw_request_info *info,
2202                          struct iw_param *vwrq,
2203                          char *extra)
2204 {
2205         struct atmel_private *priv = netdev_priv(dev);
2206         int rthr = vwrq->value;
2207
2208         if (vwrq->disabled)
2209                 rthr = 2347;
2210         if ((rthr < 0) || (rthr > 2347)) {
2211                 return -EINVAL;
2212         }
2213         priv->rts_threshold = rthr;
2214
2215         return -EINPROGRESS;            /* Call commit handler */
2216 }
2217
2218 static int atmel_get_rts(struct net_device *dev,
2219                          struct iw_request_info *info,
2220                          struct iw_param *vwrq,
2221                          char *extra)
2222 {
2223         struct atmel_private *priv = netdev_priv(dev);
2224
2225         vwrq->value = priv->rts_threshold;
2226         vwrq->disabled = (vwrq->value >= 2347);
2227         vwrq->fixed = 1;
2228
2229         return 0;
2230 }
2231
2232 static int atmel_set_frag(struct net_device *dev,
2233                           struct iw_request_info *info,
2234                           struct iw_param *vwrq,
2235                           char *extra)
2236 {
2237         struct atmel_private *priv = netdev_priv(dev);
2238         int fthr = vwrq->value;
2239
2240         if (vwrq->disabled)
2241                 fthr = 2346;
2242         if ((fthr < 256) || (fthr > 2346)) {
2243                 return -EINVAL;
2244         }
2245         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2246         priv->frag_threshold = fthr;
2247
2248         return -EINPROGRESS;            /* Call commit handler */
2249 }
2250
2251 static int atmel_get_frag(struct net_device *dev,
2252                           struct iw_request_info *info,
2253                           struct iw_param *vwrq,
2254                           char *extra)
2255 {
2256         struct atmel_private *priv = netdev_priv(dev);
2257
2258         vwrq->value = priv->frag_threshold;
2259         vwrq->disabled = (vwrq->value >= 2346);
2260         vwrq->fixed = 1;
2261
2262         return 0;
2263 }
2264
2265 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2266                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2267
2268 static int atmel_set_freq(struct net_device *dev,
2269                           struct iw_request_info *info,
2270                           struct iw_freq *fwrq,
2271                           char *extra)
2272 {
2273         struct atmel_private *priv = netdev_priv(dev);
2274         int rc = -EINPROGRESS;          /* Call commit handler */
2275
2276         /* If setting by frequency, convert to a channel */
2277         if ((fwrq->e == 1) &&
2278             (fwrq->m >= (int) 241200000) &&
2279             (fwrq->m <= (int) 248700000)) {
2280                 int f = fwrq->m / 100000;
2281                 int c = 0;
2282                 while ((c < 14) && (f != frequency_list[c]))
2283                         c++;
2284                 /* Hack to fall through... */
2285                 fwrq->e = 0;
2286                 fwrq->m = c + 1;
2287         }
2288         /* Setting by channel number */
2289         if ((fwrq->m > 1000) || (fwrq->e > 0))
2290                 rc = -EOPNOTSUPP;
2291         else {
2292                 int channel = fwrq->m;
2293                 if (atmel_validate_channel(priv, channel) == 0) {
2294                         priv->channel = channel;
2295                 } else {
2296                         rc = -EINVAL;
2297                 }
2298         }
2299         return rc;
2300 }
2301
2302 static int atmel_get_freq(struct net_device *dev,
2303                           struct iw_request_info *info,
2304                           struct iw_freq *fwrq,
2305                           char *extra)
2306 {
2307         struct atmel_private *priv = netdev_priv(dev);
2308
2309         fwrq->m = priv->channel;
2310         fwrq->e = 0;
2311         return 0;
2312 }
2313
2314 static int atmel_set_scan(struct net_device *dev,
2315                           struct iw_request_info *info,
2316                           struct iw_param *vwrq,
2317                           char *extra)
2318 {
2319         struct atmel_private *priv = netdev_priv(dev);
2320         unsigned long flags;
2321
2322         /* Note : you may have realised that, as this is a SET operation,
2323          * this is privileged and therefore a normal user can't
2324          * perform scanning.
2325          * This is not an error, while the device perform scanning,
2326          * traffic doesn't flow, so it's a perfect DoS...
2327          * Jean II */
2328
2329         if (priv->station_state == STATION_STATE_DOWN)
2330                 return -EAGAIN;
2331
2332         /* Timeout old surveys. */
2333         if ((jiffies - priv->last_survey) > (20 * HZ))
2334                 priv->site_survey_state = SITE_SURVEY_IDLE;
2335         priv->last_survey = jiffies;
2336
2337         /* Initiate a scan command */
2338         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2339                 return -EBUSY;
2340
2341         del_timer_sync(&priv->management_timer);
2342         spin_lock_irqsave(&priv->irqlock, flags);
2343
2344         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2345         priv->fast_scan = 0;
2346         atmel_scan(priv, 0);
2347         spin_unlock_irqrestore(&priv->irqlock, flags);
2348
2349         return 0;
2350 }
2351
2352 static int atmel_get_scan(struct net_device *dev,
2353                           struct iw_request_info *info,
2354                           struct iw_point *dwrq,
2355                           char *extra)
2356 {
2357         struct atmel_private *priv = netdev_priv(dev);
2358         int i;
2359         char *current_ev = extra;
2360         struct iw_event iwe;
2361
2362         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2363                 return -EAGAIN;
2364
2365         for (i = 0; i < priv->BSS_list_entries; i++) {
2366                 iwe.cmd = SIOCGIWAP;
2367                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2368                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2369                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2370
2371                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2372                 if (iwe.u.data.length > 32)
2373                         iwe.u.data.length = 32;
2374                 iwe.cmd = SIOCGIWESSID;
2375                 iwe.u.data.flags = 1;
2376                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2377
2378                 iwe.cmd = SIOCGIWMODE;
2379                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2380                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2381
2382                 iwe.cmd = SIOCGIWFREQ;
2383                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2384                 iwe.u.freq.e = 0;
2385                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2386
2387                 iwe.cmd = SIOCGIWENCODE;
2388                 if (priv->BSSinfo[i].UsingWEP)
2389                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2390                 else
2391                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2392                 iwe.u.data.length = 0;
2393                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2394         }
2395
2396         /* Length of data */
2397         dwrq->length = (current_ev - extra);
2398         dwrq->flags = 0;
2399
2400         return 0;
2401 }
2402
2403 static int atmel_get_range(struct net_device *dev,
2404                            struct iw_request_info *info,
2405                            struct iw_point *dwrq,
2406                            char *extra)
2407 {
2408         struct atmel_private *priv = netdev_priv(dev);
2409         struct iw_range *range = (struct iw_range *) extra;
2410         int k, i, j;
2411
2412         dwrq->length = sizeof(struct iw_range);
2413         memset(range, 0, sizeof(struct iw_range));
2414         range->min_nwid = 0x0000;
2415         range->max_nwid = 0x0000;
2416         range->num_channels = 0;
2417         for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2418                 if (priv->reg_domain == channel_table[j].reg_domain) {
2419                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2420                         break;
2421                 }
2422         if (range->num_channels != 0) {
2423                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2424                         range->freq[k].i = i; /* List index */
2425                         range->freq[k].m = frequency_list[i - 1] * 100000;
2426                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2427                 }
2428                 range->num_frequency = k;
2429         }
2430
2431         range->max_qual.qual = 100;
2432         range->max_qual.level = 100;
2433         range->max_qual.noise = 0;
2434         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2435
2436         range->avg_qual.qual = 50;
2437         range->avg_qual.level = 50;
2438         range->avg_qual.noise = 0;
2439         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2440
2441         range->sensitivity = 0;
2442
2443         range->bitrate[0] =  1000000;
2444         range->bitrate[1] =  2000000;
2445         range->bitrate[2] =  5500000;
2446         range->bitrate[3] = 11000000;
2447         range->num_bitrates = 4;
2448
2449         range->min_rts = 0;
2450         range->max_rts = 2347;
2451         range->min_frag = 256;
2452         range->max_frag = 2346;
2453
2454         range->encoding_size[0] = 5;
2455         range->encoding_size[1] = 13;
2456         range->num_encoding_sizes = 2;
2457         range->max_encoding_tokens = 4;
2458
2459         range->pmp_flags = IW_POWER_ON;
2460         range->pmt_flags = IW_POWER_ON;
2461         range->pm_capa = 0;
2462
2463         range->we_version_source = WIRELESS_EXT;
2464         range->we_version_compiled = WIRELESS_EXT;
2465         range->retry_capa = IW_RETRY_LIMIT ;
2466         range->retry_flags = IW_RETRY_LIMIT;
2467         range->r_time_flags = 0;
2468         range->min_retry = 1;
2469         range->max_retry = 65535;
2470
2471         return 0;
2472 }
2473
2474 static int atmel_set_wap(struct net_device *dev,
2475                          struct iw_request_info *info,
2476                          struct sockaddr *awrq,
2477                          char *extra)
2478 {
2479         struct atmel_private *priv = netdev_priv(dev);
2480         int i;
2481         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2482         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2483         unsigned long flags;
2484
2485         if (awrq->sa_family != ARPHRD_ETHER)
2486                 return -EINVAL;
2487
2488         if (!memcmp(any, awrq->sa_data, 6) ||
2489             !memcmp(off, awrq->sa_data, 6)) {
2490                 del_timer_sync(&priv->management_timer);
2491                 spin_lock_irqsave(&priv->irqlock, flags);
2492                 atmel_scan(priv, 1);
2493                 spin_unlock_irqrestore(&priv->irqlock, flags);
2494                 return 0;
2495         }
2496
2497         for (i = 0; i < priv->BSS_list_entries; i++) {
2498                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2499                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2500                                 return -EINVAL;
2501                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2502                                 return -EINVAL;
2503                         } else {
2504                                 del_timer_sync(&priv->management_timer);
2505                                 spin_lock_irqsave(&priv->irqlock, flags);
2506                                 atmel_join_bss(priv, i);
2507                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2508                                 return 0;
2509                         }
2510                 }
2511         }
2512
2513         return -EINVAL;
2514 }
2515
2516 static int atmel_config_commit(struct net_device *dev,
2517                                struct iw_request_info *info,    /* NULL */
2518                                void *zwrq,                      /* NULL */
2519                                char *extra)                     /* NULL */
2520 {
2521         return atmel_open(dev);
2522 }
2523
2524 static const iw_handler atmel_handler[] =
2525 {
2526         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2527         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2528         (iw_handler) NULL,                      /* SIOCSIWNWID */
2529         (iw_handler) NULL,                      /* SIOCGIWNWID */
2530         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2531         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2532         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2533         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2534         (iw_handler) NULL,                      /* SIOCSIWSENS */
2535         (iw_handler) NULL,                      /* SIOCGIWSENS */
2536         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2537         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2538         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2539         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2540         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2541         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2542         (iw_handler) NULL,                      /* SIOCSIWSPY */
2543         (iw_handler) NULL,                      /* SIOCGIWSPY */
2544         (iw_handler) NULL,                      /* -- hole -- */
2545         (iw_handler) NULL,                      /* -- hole -- */
2546         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2547         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2548         (iw_handler) NULL,                      /* -- hole -- */
2549         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2550         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2551         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2552         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2553         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2554         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2555         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2556         (iw_handler) NULL,                      /* -- hole -- */
2557         (iw_handler) NULL,                      /* -- hole -- */
2558         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2559         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2560         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2561         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2562         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2563         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2564         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2565         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2566         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2567         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2568         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2569         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2570         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2571         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2572         (iw_handler) NULL,                      /* -- hole -- */
2573         (iw_handler) NULL,                      /* -- hole -- */
2574         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2575         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2576         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2577         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2578         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2579         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2580         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2581 };
2582
2583 static const iw_handler atmel_private_handler[] =
2584 {
2585         NULL,                           /* SIOCIWFIRSTPRIV */
2586 };
2587
2588 typedef struct atmel_priv_ioctl {
2589         char id[32];
2590         unsigned char __user *data;
2591         unsigned short len;
2592 } atmel_priv_ioctl;
2593
2594 #define ATMELFWL        SIOCIWFIRSTPRIV
2595 #define ATMELIDIFC      ATMELFWL + 1
2596 #define ATMELRD         ATMELFWL + 2
2597 #define ATMELMAGIC 0x51807
2598 #define REGDOMAINSZ 20
2599
2600 static const struct iw_priv_args atmel_private_args[] = {
2601         {
2602                 .cmd = ATMELFWL,
2603                 .set_args = IW_PRIV_TYPE_BYTE
2604                                 | IW_PRIV_SIZE_FIXED
2605                                 | sizeof (atmel_priv_ioctl),
2606                 .get_args = IW_PRIV_TYPE_NONE,
2607                 .name = "atmelfwl"
2608         }, {
2609                 .cmd = ATMELIDIFC,
2610                 .set_args = IW_PRIV_TYPE_NONE,
2611                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2612                 .name = "atmelidifc"
2613         }, {
2614                 .cmd = ATMELRD,
2615                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2616                 .get_args = IW_PRIV_TYPE_NONE,
2617                 .name = "regdomain"
2618         },
2619 };
2620
2621 static const struct iw_handler_def atmel_handler_def =
2622 {
2623         .num_standard   = sizeof(atmel_handler)/sizeof(iw_handler),
2624         .num_private    = sizeof(atmel_private_handler)/sizeof(iw_handler),
2625         .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
2626         .standard       = (iw_handler *) atmel_handler,
2627         .private        = (iw_handler *) atmel_private_handler,
2628         .private_args   = (struct iw_priv_args *) atmel_private_args,
2629         .get_wireless_stats = atmel_get_wireless_stats
2630 };
2631
2632 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2633 {
2634         int i, rc = 0;
2635         struct atmel_private *priv = netdev_priv(dev);
2636         atmel_priv_ioctl com;
2637         struct iwreq *wrq = (struct iwreq *) rq;
2638         unsigned char *new_firmware;
2639         char domain[REGDOMAINSZ + 1];
2640
2641         switch (cmd) {
2642         case ATMELIDIFC:
2643                 wrq->u.param.value = ATMELMAGIC;
2644                 break;
2645
2646         case ATMELFWL:
2647                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2648                         rc = -EFAULT;
2649                         break;
2650                 }
2651
2652                 if (!capable(CAP_NET_ADMIN)) {
2653                         rc = -EPERM;
2654                         break;
2655                 }
2656
2657                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2658                         rc = -ENOMEM;
2659                         break;
2660                 }
2661
2662                 if (copy_from_user(new_firmware, com.data, com.len)) {
2663                         kfree(new_firmware);
2664                         rc = -EFAULT;
2665                         break;
2666                 }
2667
2668                 kfree(priv->firmware);
2669
2670                 priv->firmware = new_firmware;
2671                 priv->firmware_length = com.len;
2672                 strncpy(priv->firmware_id, com.id, 31);
2673                 priv->firmware_id[31] = '\0';
2674                 break;
2675
2676         case ATMELRD:
2677                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2678                         rc = -EFAULT;
2679                         break;
2680                 }
2681
2682                 if (!capable(CAP_NET_ADMIN)) {
2683                         rc = -EPERM;
2684                         break;
2685                 }
2686
2687                 domain[REGDOMAINSZ] = 0;
2688                 rc = -EINVAL;
2689                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2690                         /* strcasecmp doesn't exist in the library */
2691                         char *a = channel_table[i].name;
2692                         char *b = domain;
2693                         while (*a) {
2694                                 char c1 = *a++;
2695                                 char c2 = *b++;
2696                                 if (tolower(c1) != tolower(c2))
2697                                         break;
2698                         }
2699                         if (!*a && !*b) {
2700                                 priv->config_reg_domain = channel_table[i].reg_domain;
2701                                 rc = 0;
2702                         }
2703                 }
2704
2705                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2706                         rc = atmel_open(dev);
2707                 break;
2708
2709         default:
2710                 rc = -EOPNOTSUPP;
2711         }
2712
2713         return rc;
2714 }
2715
2716 struct auth_body {
2717         u16 alg;
2718         u16 trans_seq;
2719         u16 status;
2720         u8 el_id;
2721         u8 chall_text_len;
2722         u8 chall_text[253];
2723 };
2724
2725 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2726 {
2727         int old_state = priv->station_state;
2728
2729         if (new_state == old_state)
2730                 return;
2731
2732         priv->station_state = new_state;
2733
2734         if (new_state == STATION_STATE_READY) {
2735                 netif_start_queue(priv->dev);
2736                 netif_carrier_on(priv->dev);
2737         }
2738
2739         if (old_state == STATION_STATE_READY) {
2740                 netif_carrier_off(priv->dev);
2741                 if (netif_running(priv->dev))
2742                         netif_stop_queue(priv->dev);
2743                 priv->last_beacon_timestamp = 0;
2744         }
2745 }
2746
2747 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2748 {
2749         struct {
2750                 u8 BSSID[6];
2751                 u8 SSID[MAX_SSID_LENGTH];
2752                 u8 scan_type;
2753                 u8 channel;
2754                 u16 BSS_type;
2755                 u16 min_channel_time;
2756                 u16 max_channel_time;
2757                 u8 options;
2758                 u8 SSID_size;
2759         } cmd;
2760
2761         memset(cmd.BSSID, 0xff, 6);
2762
2763         if (priv->fast_scan) {
2764                 cmd.SSID_size = priv->SSID_size;
2765                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2766                 cmd.min_channel_time = cpu_to_le16(10);
2767                 cmd.max_channel_time = cpu_to_le16(50);
2768         } else {
2769                 priv->BSS_list_entries = 0;
2770                 cmd.SSID_size = 0;
2771                 cmd.min_channel_time = cpu_to_le16(10);
2772                 cmd.max_channel_time = cpu_to_le16(120);
2773         }
2774
2775         cmd.options = 0;
2776
2777         if (!specific_ssid)
2778                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2779
2780         cmd.channel = (priv->channel & 0x7f);
2781         cmd.scan_type = SCAN_TYPE_ACTIVE;
2782         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2783                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2784
2785         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2786
2787         /* This must come after all hardware access to avoid being messed up
2788            by stuff happening in interrupt context after we leave STATE_DOWN */
2789         atmel_enter_state(priv, STATION_STATE_SCANNING);
2790 }
2791
2792 static void join(struct atmel_private *priv, int type)
2793 {
2794         struct {
2795                 u8 BSSID[6];
2796                 u8 SSID[MAX_SSID_LENGTH];
2797                 u8 BSS_type; /* this is a short in a scan command - weird */
2798                 u8 channel;
2799                 u16 timeout;
2800                 u8 SSID_size;
2801                 u8 reserved;
2802         } cmd;
2803
2804         cmd.SSID_size = priv->SSID_size;
2805         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2806         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2807         cmd.channel = (priv->channel & 0x7f);
2808         cmd.BSS_type = type;
2809         cmd.timeout = cpu_to_le16(2000);
2810
2811         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2812 }
2813
2814 static void start(struct atmel_private *priv, int type)
2815 {
2816         struct {
2817                 u8 BSSID[6];
2818                 u8 SSID[MAX_SSID_LENGTH];
2819                 u8 BSS_type;
2820                 u8 channel;
2821                 u8 SSID_size;
2822                 u8 reserved[3];
2823         } cmd;
2824
2825         cmd.SSID_size = priv->SSID_size;
2826         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2827         memcpy(cmd.BSSID, priv->BSSID, 6);
2828         cmd.BSS_type = type;
2829         cmd.channel = (priv->channel & 0x7f);
2830
2831         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2832 }
2833
2834 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2835                                 u8 channel)
2836 {
2837         int rejoin = 0;
2838         int new = capability  & C80211_MGMT_CAPABILITY_ShortPreamble ?
2839                 SHORT_PREAMBLE : LONG_PREAMBLE;
2840
2841         if (priv->preamble != new) {
2842                 priv->preamble = new;
2843                 rejoin = 1;
2844                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2845         }
2846
2847         if (priv->channel != channel) {
2848                 priv->channel = channel;
2849                 rejoin = 1;
2850                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2851         }
2852
2853         if (rejoin) {
2854                 priv->station_is_associated = 0;
2855                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2856
2857                 if (priv->operating_mode == IW_MODE_INFRA)
2858                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2859                 else
2860                         join(priv, BSS_TYPE_AD_HOC);
2861         }
2862 }
2863
2864 static void send_authentication_request(struct atmel_private *priv, u16 system,
2865                                         u8 *challenge, int challenge_len)
2866 {
2867         struct ieee80211_hdr_4addr header;
2868         struct auth_body auth;
2869
2870         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2871         header.duration_id = cpu_to_le16(0x8000);
2872         header.seq_ctl = 0;
2873         memcpy(header.addr1, priv->CurrentBSSID, 6);
2874         memcpy(header.addr2, priv->dev->dev_addr, 6);
2875         memcpy(header.addr3, priv->CurrentBSSID, 6);
2876
2877         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2878                 /* no WEP for authentication frames with TrSeqNo 1 */
2879                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2880
2881         auth.alg = cpu_to_le16(system);
2882
2883         auth.status = 0;
2884         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2885         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2886         priv->CurrentAuthentTransactionSeqNum += 2;
2887
2888         if (challenge_len != 0) {
2889                 auth.el_id = 16; /* challenge_text */
2890                 auth.chall_text_len = challenge_len;
2891                 memcpy(auth.chall_text, challenge, challenge_len);
2892                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2893         } else {
2894                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2895         }
2896 }
2897
2898 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2899 {
2900         u8 *ssid_el_p;
2901         int bodysize;
2902         struct ieee80211_hdr_4addr header;
2903         struct ass_req_format {
2904                 u16 capability;
2905                 u16 listen_interval;
2906                 u8 ap[6]; /* nothing after here directly accessible */
2907                 u8 ssid_el_id;
2908                 u8 ssid_len;
2909                 u8 ssid[MAX_SSID_LENGTH];
2910                 u8 sup_rates_el_id;
2911                 u8 sup_rates_len;
2912                 u8 rates[4];
2913         } body;
2914
2915         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2916                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2917         header.duration_id = cpu_to_le16(0x8000);
2918         header.seq_ctl = 0;
2919
2920         memcpy(header.addr1, priv->CurrentBSSID, 6);
2921         memcpy(header.addr2, priv->dev->dev_addr, 6);
2922         memcpy(header.addr3, priv->CurrentBSSID, 6);
2923
2924         body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
2925         if (priv->wep_is_on)
2926                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
2927         if (priv->preamble == SHORT_PREAMBLE)
2928                 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
2929
2930         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2931
2932         /* current AP address - only in reassoc frame */
2933         if (is_reassoc) {
2934                 memcpy(body.ap, priv->CurrentBSSID, 6);
2935                 ssid_el_p = (u8 *)&body.ssid_el_id;
2936                 bodysize = 18 + priv->SSID_size;
2937         } else {
2938                 ssid_el_p = (u8 *)&body.ap[0];
2939                 bodysize = 12 + priv->SSID_size;
2940         }
2941
2942         ssid_el_p[0] = C80211_MGMT_ElementID_SSID;
2943         ssid_el_p[1] = priv->SSID_size;
2944         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2945         ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
2946         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2947         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2948
2949         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2950 }
2951
2952 static int is_frame_from_current_bss(struct atmel_private *priv,
2953                                      struct ieee80211_hdr_4addr *header)
2954 {
2955         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2956                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2957         else
2958                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2959 }
2960
2961 static int retrieve_bss(struct atmel_private *priv)
2962 {
2963         int i;
2964         int max_rssi = -128;
2965         int max_index = -1;
2966
2967         if (priv->BSS_list_entries == 0)
2968                 return -1;
2969
2970         if (priv->connect_to_any_BSS) {
2971                 /* Select a BSS with the max-RSSI but of the same type and of
2972                    the same WEP mode and that it is not marked as 'bad' (i.e.
2973                    we had previously failed to connect to this BSS with the
2974                    settings that we currently use) */
2975                 priv->current_BSS = 0;
2976                 for (i = 0; i < priv->BSS_list_entries; i++) {
2977                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2978                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2979                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2980                             !(priv->BSSinfo[i].channel & 0x80)) {
2981                                 max_rssi = priv->BSSinfo[i].RSSI;
2982                                 priv->current_BSS = max_index = i;
2983                         }
2984                 }
2985                 return max_index;
2986         }
2987
2988         for (i = 0; i < priv->BSS_list_entries; i++) {
2989                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2990                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2991                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2992                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2993                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2994                                 max_rssi = priv->BSSinfo[i].RSSI;
2995                                 max_index = i;
2996                         }
2997                 }
2998         }
2999         return max_index;
3000 }
3001
3002 static void store_bss_info(struct atmel_private *priv,
3003                            struct ieee80211_hdr_4addr *header, u16 capability,
3004                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3005                            u8 *ssid, int is_beacon)
3006 {
3007         u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
3008         int i, index;
3009
3010         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3011                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
3012                         index = i;
3013
3014         /* If we process a probe and an entry from this BSS exists
3015            we will update the BSS entry with the info from this BSS.
3016            If we process a beacon we will only update RSSI */
3017
3018         if (index == -1) {
3019                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3020                         return;
3021                 index = priv->BSS_list_entries++;
3022                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3023                 priv->BSSinfo[index].RSSI = rssi;
3024         } else {
3025                 if (rssi > priv->BSSinfo[index].RSSI)
3026                         priv->BSSinfo[index].RSSI = rssi;
3027                 if (is_beacon)
3028                         return;
3029         }
3030
3031         priv->BSSinfo[index].channel = channel;
3032         priv->BSSinfo[index].beacon_period = beacon_period;
3033         priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
3034         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3035         priv->BSSinfo[index].SSIDsize = ssid_len;
3036
3037         if (capability & C80211_MGMT_CAPABILITY_IBSS)
3038                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3039         else if (capability & C80211_MGMT_CAPABILITY_ESS)
3040                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
3041
3042         priv->BSSinfo[index].preamble = capability & C80211_MGMT_CAPABILITY_ShortPreamble ?
3043                 SHORT_PREAMBLE : LONG_PREAMBLE;
3044 }
3045
3046 static void authenticate(struct atmel_private *priv, u16 frame_len)
3047 {
3048         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3049         u16 status = le16_to_cpu(auth->status);
3050         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3051         u16 system = le16_to_cpu(auth->alg);
3052
3053         if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) {
3054                 /* no WEP */
3055                 if (priv->station_was_associated) {
3056                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3057                         send_association_request(priv, 1);
3058                         return;
3059                 } else {
3060                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3061                         send_association_request(priv, 0);
3062                         return;
3063                 }
3064         }
3065
3066         if (status == C80211_MGMT_SC_Success && priv->wep_is_on) {
3067                 int should_associate = 0;
3068                 /* WEP */
3069                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3070                         return;
3071
3072                 if (system == C80211_MGMT_AAN_OPENSYSTEM) {
3073                         if (trans_seq_no == 0x0002) {
3074                                 should_associate = 1;
3075                         }
3076                 } else if (system == C80211_MGMT_AAN_SHAREDKEY) {
3077                         if (trans_seq_no == 0x0002 &&
3078                             auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
3079                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3080                                 return;
3081                         } else if (trans_seq_no == 0x0004) {
3082                                 should_associate = 1;
3083                         }
3084                 }
3085
3086                 if (should_associate) {
3087                         if(priv->station_was_associated) {
3088                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3089                                 send_association_request(priv, 1);
3090                                 return;
3091                         } else {
3092                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3093                                 send_association_request(priv, 0);
3094                                 return;
3095                         }
3096                 }
3097         }
3098
3099         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3100                 /* Do opensystem first, then try sharedkey */
3101                 if (system == WLAN_AUTH_OPEN) {
3102                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3103                         priv->exclude_unencrypted = 1;
3104                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3105                         return;
3106                 } else if (priv->connect_to_any_BSS) {
3107                         int bss_index;
3108
3109                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3110
3111                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3112                                 atmel_join_bss(priv, bss_index);
3113                                 return;
3114                         }
3115                 }
3116         }
3117
3118         priv->AuthenticationRequestRetryCnt = 0;
3119         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3120         priv->station_is_associated = 0;
3121 }
3122
3123 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3124 {
3125         struct ass_resp_format {
3126                 u16 capability;
3127                 u16 status;
3128                 u16 ass_id;
3129                 u8 el_id;
3130                 u8 length;
3131                 u8 rates[4];
3132         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3133
3134         u16 status = le16_to_cpu(ass_resp->status);
3135         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3136         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3137
3138         union iwreq_data wrqu;
3139
3140         if (frame_len < 8 + rates_len)
3141                 return;
3142
3143         if (status == C80211_MGMT_SC_Success) {
3144                 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
3145                         priv->AssociationRequestRetryCnt = 0;
3146                 else
3147                         priv->ReAssociationRequestRetryCnt = 0;
3148
3149                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3150                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3151                 atmel_set_mib(priv, Phy_Mib_Type,
3152                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3153                 if (priv->power_mode == 0) {
3154                         priv->listen_interval = 1;
3155                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3156                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3157                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3158                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3159                 } else {
3160                         priv->listen_interval = 2;
3161                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3162                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3163                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3164                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3165                 }
3166
3167                 priv->station_is_associated = 1;
3168                 priv->station_was_associated = 1;
3169                 atmel_enter_state(priv, STATION_STATE_READY);
3170
3171                 /* Send association event to userspace */
3172                 wrqu.data.length = 0;
3173                 wrqu.data.flags = 0;
3174                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3175                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3176                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3177
3178                 return;
3179         }
3180
3181         if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
3182             status != C80211_MGMT_SC_AssDeniedBSSRate &&
3183             status != C80211_MGMT_SC_SupportCapabilities &&
3184             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3185                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3186                 priv->AssociationRequestRetryCnt++;
3187                 send_association_request(priv, 0);
3188                 return;
3189         }
3190
3191         if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
3192             status != C80211_MGMT_SC_AssDeniedBSSRate &&
3193             status != C80211_MGMT_SC_SupportCapabilities &&
3194             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3195                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3196                 priv->ReAssociationRequestRetryCnt++;
3197                 send_association_request(priv, 1);
3198                 return;
3199         }
3200
3201         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3202         priv->station_is_associated = 0;
3203
3204         if (priv->connect_to_any_BSS) {
3205                 int bss_index;
3206                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3207
3208                 if ((bss_index = retrieve_bss(priv)) != -1)
3209                         atmel_join_bss(priv, bss_index);
3210         }
3211 }
3212
3213 void atmel_join_bss(struct atmel_private *priv, int bss_index)
3214 {
3215         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3216
3217         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3218         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3219
3220         /* The WPA stuff cares about the current AP address */
3221         if (priv->use_wpa)
3222                 build_wpa_mib(priv);
3223
3224         /* When switching to AdHoc turn OFF Power Save if needed */
3225
3226         if (bss->BSStype == IW_MODE_ADHOC &&
3227             priv->operating_mode != IW_MODE_ADHOC &&
3228             priv->power_mode) {
3229                 priv->power_mode = 0;
3230                 priv->listen_interval = 1;
3231                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3232                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3233                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3234                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3235         }
3236
3237         priv->operating_mode = bss->BSStype;
3238         priv->channel = bss->channel & 0x7f;
3239         priv->beacon_period = bss->beacon_period;
3240
3241         if (priv->preamble != bss->preamble) {
3242                 priv->preamble = bss->preamble;
3243                 atmel_set_mib8(priv, Local_Mib_Type,
3244                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3245         }
3246
3247         if (!priv->wep_is_on && bss->UsingWEP) {
3248                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3249                 priv->station_is_associated = 0;
3250                 return;
3251         }
3252
3253         if (priv->wep_is_on && !bss->UsingWEP) {
3254                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3255                 priv->station_is_associated = 0;
3256                 return;
3257         }
3258
3259         atmel_enter_state(priv, STATION_STATE_JOINNING);
3260
3261         if (priv->operating_mode == IW_MODE_INFRA)
3262                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3263         else
3264                 join(priv, BSS_TYPE_AD_HOC);
3265 }
3266
3267 static void restart_search(struct atmel_private *priv)
3268 {
3269         int bss_index;
3270
3271         if (!priv->connect_to_any_BSS) {
3272                 atmel_scan(priv, 1);
3273         } else {
3274                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3275
3276                 if ((bss_index = retrieve_bss(priv)) != -1)
3277                         atmel_join_bss(priv, bss_index);
3278                 else
3279                         atmel_scan(priv, 0);
3280         }
3281 }
3282
3283 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3284 {
3285         u8 old = priv->wstats.qual.level;
3286         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3287
3288         switch (priv->firmware_type) {
3289                 case ATMEL_FW_TYPE_502E:
3290                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3291                         break;
3292                 default:
3293                         break;
3294         }
3295
3296         rssi = rssi * 100 / max_rssi;
3297         if ((rssi + old) % 2)
3298                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3299         else
3300                 priv->wstats.qual.level = (rssi + old) / 2;
3301         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3302         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3303 }
3304
3305 static void atmel_smooth_qual(struct atmel_private *priv)
3306 {
3307         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3308         while (time_diff--) {
3309                 priv->last_qual += HZ;
3310                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3311                 priv->wstats.qual.qual +=
3312                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3313                 priv->beacons_this_sec = 0;
3314         }
3315         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3316         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3317 }
3318
3319 /* deals with incoming managment frames. */
3320 static void atmel_management_frame(struct atmel_private *priv,
3321                                    struct ieee80211_hdr_4addr *header,
3322                                    u16 frame_len, u8 rssi)
3323 {
3324         u16 subtype;
3325
3326         subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
3327         switch (subtype) {
3328         case C80211_SUBTYPE_MGMT_BEACON:
3329         case C80211_SUBTYPE_MGMT_ProbeResponse:
3330
3331                 /* beacon frame has multiple variable-length fields -
3332                    never let an engineer loose with a data structure design. */
3333                 {
3334                         struct beacon_format {
3335                                 u64 timestamp;
3336                                 u16 interval;
3337                                 u16 capability;
3338                                 u8 ssid_el_id;
3339                                 u8 ssid_length;
3340                                 /* ssid here */
3341                                 u8 rates_el_id;
3342                                 u8 rates_length;
3343                                 /* rates here */
3344                                 u8 ds_el_id;
3345                                 u8 ds_length;
3346                                 /* ds here */
3347                         } *beacon = (struct beacon_format *)priv->rx_buf;
3348
3349                         u8 channel, rates_length, ssid_length;
3350                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3351                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3352                         u16 capability = le16_to_cpu(beacon->capability);
3353                         u8 *beaconp = priv->rx_buf;
3354                         ssid_length = beacon->ssid_length;
3355                         /* this blows chunks. */
3356                         if (frame_len < 14 || frame_len < ssid_length + 15)
3357                                 return;
3358                         rates_length = beaconp[beacon->ssid_length + 15];
3359                         if (frame_len < ssid_length + rates_length + 18)
3360                                 return;
3361                         if (ssid_length >  MAX_SSID_LENGTH)
3362                                 return;
3363                         channel = beaconp[ssid_length + rates_length + 18];
3364
3365                         if (priv->station_state == STATION_STATE_READY) {
3366                                 smooth_rssi(priv, rssi);
3367                                 if (is_frame_from_current_bss(priv, header)) {
3368                                         priv->beacons_this_sec++;
3369                                         atmel_smooth_qual(priv);
3370                                         if (priv->last_beacon_timestamp) {
3371                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3372                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3373                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3374                                                 if (beacons > 1)
3375                                                         priv->wstats.miss.beacon += beacons - 1;
3376                                         }
3377                                         priv->last_beacon_timestamp = timestamp;
3378                                         handle_beacon_probe(priv, capability, channel);
3379                                 }
3380                         }
3381
3382                         if (priv->station_state == STATION_STATE_SCANNING)
3383                                 store_bss_info(priv, header, capability,
3384                                                beacon_interval, channel, rssi,
3385                                                ssid_length,
3386                                                &beacon->rates_el_id,
3387                                                subtype == C80211_SUBTYPE_MGMT_BEACON);
3388                 }
3389                 break;
3390
3391         case C80211_SUBTYPE_MGMT_Authentication:
3392
3393                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3394                         authenticate(priv, frame_len);
3395
3396                 break;
3397
3398         case C80211_SUBTYPE_MGMT_ASS_RESPONSE:
3399         case C80211_SUBTYPE_MGMT_REASS_RESPONSE:
3400
3401                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3402                     priv->station_state == STATION_STATE_REASSOCIATING)
3403                         associate(priv, frame_len, subtype);
3404
3405                 break;
3406
3407         case C80211_SUBTYPE_MGMT_DISASSOSIATION:
3408                 if (priv->station_is_associated &&
3409                     priv->operating_mode == IW_MODE_INFRA &&
3410                     is_frame_from_current_bss(priv, header)) {
3411                         priv->station_was_associated = 0;
3412                         priv->station_is_associated = 0;
3413
3414                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3415                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3416                 }
3417
3418                 break;
3419
3420         case C80211_SUBTYPE_MGMT_Deauthentication:
3421                 if (priv->operating_mode == IW_MODE_INFRA &&
3422                     is_frame_from_current_bss(priv, header)) {
3423                         priv->station_was_associated = 0;
3424
3425                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3426                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3427                 }
3428
3429                 break;
3430         }
3431 }
3432
3433 /* run when timer expires */
3434 static void atmel_management_timer(u_long a)
3435 {
3436         struct net_device *dev = (struct net_device *) a;
3437         struct atmel_private *priv = netdev_priv(dev);
3438         unsigned long flags;
3439
3440         /* Check if the card has been yanked. */
3441         if (priv->card && priv->present_callback &&
3442                 !(*priv->present_callback)(priv->card))
3443                 return;
3444
3445         spin_lock_irqsave(&priv->irqlock, flags);
3446
3447         switch (priv->station_state) {
3448
3449         case STATION_STATE_AUTHENTICATING:
3450                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3451                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3452                         priv->station_is_associated = 0;
3453                         priv->AuthenticationRequestRetryCnt = 0;
3454                         restart_search(priv);
3455                 } else {
3456                         int auth = C80211_MGMT_AAN_OPENSYSTEM;
3457                         priv->AuthenticationRequestRetryCnt++;
3458                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3459                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3460                         if (priv->wep_is_on && priv->exclude_unencrypted)
3461                                 auth = C80211_MGMT_AAN_SHAREDKEY;
3462                         send_authentication_request(priv, auth, NULL, 0);
3463           }
3464           break;
3465
3466         case STATION_STATE_ASSOCIATING:
3467                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3468                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3469                         priv->station_is_associated = 0;
3470                         priv->AssociationRequestRetryCnt = 0;
3471                         restart_search(priv);
3472                 } else {
3473                         priv->AssociationRequestRetryCnt++;
3474                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3475                         send_association_request(priv, 0);
3476                 }
3477           break;
3478
3479         case STATION_STATE_REASSOCIATING:
3480                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3481                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3482                         priv->station_is_associated = 0;
3483                         priv->ReAssociationRequestRetryCnt = 0;
3484                         restart_search(priv);
3485                 } else {
3486                         priv->ReAssociationRequestRetryCnt++;
3487                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3488                         send_association_request(priv, 1);
3489                 }
3490                 break;
3491
3492         default:
3493                 break;
3494         }
3495
3496         spin_unlock_irqrestore(&priv->irqlock, flags);
3497 }
3498
3499 static void atmel_command_irq(struct atmel_private *priv)
3500 {
3501         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3502         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3503         int fast_scan;
3504
3505         if (status == CMD_STATUS_IDLE ||
3506             status == CMD_STATUS_IN_PROGRESS)
3507                 return;
3508
3509         switch (command){
3510
3511         case CMD_Start:
3512                 if (status == CMD_STATUS_COMPLETE) {
3513                         priv->station_was_associated = priv->station_is_associated;
3514                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3515                                       (u8 *)priv->CurrentBSSID, 6);
3516                         atmel_enter_state(priv, STATION_STATE_READY);
3517                 }
3518                 break;
3519
3520         case CMD_Scan:
3521                 fast_scan = priv->fast_scan;
3522                 priv->fast_scan = 0;
3523
3524                 if (status != CMD_STATUS_COMPLETE) {
3525                         atmel_scan(priv, 1);
3526                 } else {
3527                         int bss_index = retrieve_bss(priv);
3528                         if (bss_index != -1) {
3529                                 atmel_join_bss(priv, bss_index);
3530                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3531                                    priv->SSID_size != 0) {
3532                                 start(priv, BSS_TYPE_AD_HOC);
3533                         } else {
3534                                 priv->fast_scan = !fast_scan;
3535                                 atmel_scan(priv, 1);
3536                         }
3537                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3538                 }
3539                 break;
3540
3541         case CMD_SiteSurvey:
3542                 priv->fast_scan = 0;
3543
3544                 if (status != CMD_STATUS_COMPLETE)
3545                         return;
3546
3547                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3548                 if (priv->station_is_associated) {
3549                         atmel_enter_state(priv, STATION_STATE_READY);
3550                 } else {
3551                         atmel_scan(priv, 1);
3552                 }
3553                 break;
3554
3555         case CMD_Join:
3556                 if (status == CMD_STATUS_COMPLETE) {
3557                         if (priv->operating_mode == IW_MODE_ADHOC) {
3558                                 priv->station_was_associated = priv->station_is_associated;
3559                                 atmel_enter_state(priv, STATION_STATE_READY);
3560                         } else {
3561                                 int auth = C80211_MGMT_AAN_OPENSYSTEM;
3562                                 priv->AuthenticationRequestRetryCnt = 0;
3563                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3564
3565                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3566                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3567                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3568                                         auth = C80211_MGMT_AAN_SHAREDKEY;
3569                                 send_authentication_request(priv, auth, NULL, 0);
3570                         }
3571                         return;
3572                 }
3573
3574                 atmel_scan(priv, 1);
3575         }
3576 }
3577
3578 static int atmel_wakeup_firmware(struct atmel_private *priv)
3579 {
3580         struct host_info_struct *iface = &priv->host_info;
3581         u16 mr1, mr3;
3582         int i;
3583
3584         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3585                 atmel_set_gcr(priv->dev, GCR_REMAP);
3586
3587         /* wake up on-board processor */
3588         atmel_clear_gcr(priv->dev, 0x0040);
3589         atmel_write16(priv->dev, BSR, BSS_SRAM);
3590
3591         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3592                 mdelay(100);
3593
3594         /* and wait for it */
3595         for (i = LOOP_RETRY_LIMIT; i; i--) {
3596                 mr1 = atmel_read16(priv->dev, MR1);
3597                 mr3 = atmel_read16(priv->dev, MR3);
3598
3599                 if (mr3 & MAC_BOOT_COMPLETE)
3600                         break;
3601                 if (mr1 & MAC_BOOT_COMPLETE &&
3602                     priv->bus_type == BUS_TYPE_PCCARD)
3603                         break;
3604         }
3605
3606         if (i == 0) {
3607                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3608                 return 0;
3609         }
3610
3611         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3612                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3613                 return 0;
3614         }
3615
3616         /* now check for completion of MAC initialization through
3617            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3618            MAC initialization, check completion status, set interrupt mask,
3619            enables interrupts and calls Tx and Rx initialization functions */
3620
3621         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3622
3623         for (i = LOOP_RETRY_LIMIT; i; i--) {
3624                 mr1 = atmel_read16(priv->dev, MR1);
3625                 mr3 = atmel_read16(priv->dev, MR3);
3626
3627                 if (mr3 & MAC_INIT_COMPLETE)
3628                         break;
3629                 if (mr1 & MAC_INIT_COMPLETE &&
3630                     priv->bus_type == BUS_TYPE_PCCARD)
3631                         break;
3632         }
3633
3634         if (i == 0) {
3635                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3636                                 priv->dev->name);
3637                 return 0;
3638         }
3639
3640         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3641         if ((mr3 & MAC_INIT_COMPLETE) &&
3642             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3643                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3644                 return 0;
3645         }
3646         if ((mr1 & MAC_INIT_COMPLETE) &&
3647             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3648                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3649                 return 0;
3650         }
3651
3652         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3653                            priv->host_info_base, sizeof(*iface));
3654
3655         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3656         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3657         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3658         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3659         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3660         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3661         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3662         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3663         iface->build_version = le16_to_cpu(iface->build_version);
3664         iface->command_pos = le16_to_cpu(iface->command_pos);
3665         iface->major_version = le16_to_cpu(iface->major_version);
3666         iface->minor_version = le16_to_cpu(iface->minor_version);
3667         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3668         iface->mac_status = le16_to_cpu(iface->mac_status);
3669
3670         return 1;
3671 }
3672
3673 /* determine type of memory and MAC address */
3674 static int probe_atmel_card(struct net_device *dev)
3675 {
3676         int rc = 0;
3677         struct atmel_private *priv = netdev_priv(dev);
3678
3679         /* reset pccard */
3680         if (priv->bus_type == BUS_TYPE_PCCARD)
3681                 atmel_write16(dev, GCR, 0x0060);
3682
3683         atmel_write16(dev, GCR, 0x0040);
3684         mdelay(500);
3685
3686         if (atmel_read16(dev, MR2) == 0) {
3687                 /* No stored firmware so load a small stub which just
3688                    tells us the MAC address */
3689                 int i;
3690                 priv->card_type = CARD_TYPE_EEPROM;
3691                 atmel_write16(dev, BSR, BSS_IRAM);
3692                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3693                 atmel_set_gcr(dev, GCR_REMAP);
3694                 atmel_clear_gcr(priv->dev, 0x0040);
3695                 atmel_write16(dev, BSR, BSS_SRAM);
3696                 for (i = LOOP_RETRY_LIMIT; i; i--)
3697                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3698                                 break;
3699                 if (i == 0) {
3700                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3701                 } else {
3702                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3703                         /* got address, now squash it again until the network
3704                            interface is opened */
3705                         if (priv->bus_type == BUS_TYPE_PCCARD)
3706                                 atmel_write16(dev, GCR, 0x0060);
3707                         atmel_write16(dev, GCR, 0x0040);
3708                         rc = 1;
3709                 }
3710         } else if (atmel_read16(dev, MR4) == 0) {
3711                 /* Mac address easy in this case. */
3712                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3713                 atmel_write16(dev,  BSR, 1);
3714                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3715                 atmel_write16(dev,  BSR, 0x200);
3716                 rc = 1;
3717         } else {
3718                 /* Standard firmware in flash, boot it up and ask
3719                    for the Mac Address */
3720                 priv->card_type = CARD_TYPE_SPI_FLASH;
3721                 if (atmel_wakeup_firmware(priv)) {
3722                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3723
3724                         /* got address, now squash it again until the network
3725                            interface is opened */
3726                         if (priv->bus_type == BUS_TYPE_PCCARD)
3727                                 atmel_write16(dev, GCR, 0x0060);
3728                         atmel_write16(dev, GCR, 0x0040);
3729                         rc = 1;
3730                 }
3731         }
3732
3733         if (rc) {
3734                 if (dev->dev_addr[0] == 0xFF) {
3735                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3736                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3737                         memcpy(dev->dev_addr, default_mac, 6);
3738                 }
3739         }
3740
3741         return rc;
3742 }
3743
3744 /* Move the encyption information on the MIB structure.
3745    This routine is for the pre-WPA firmware: later firmware has
3746    a different format MIB and a different routine. */
3747 static void build_wep_mib(struct atmel_private *priv)
3748 {
3749         struct { /* NB this is matched to the hardware, don't change. */
3750                 u8 wep_is_on;
3751                 u8 default_key; /* 0..3 */
3752                 u8 reserved;
3753                 u8 exclude_unencrypted;
3754
3755                 u32 WEPICV_error_count;
3756                 u32 WEP_excluded_count;
3757
3758                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3759                 u8 encryption_level; /* 0, 1, 2 */
3760                 u8 reserved2[3];
3761         } mib;
3762         int i;
3763
3764         mib.wep_is_on = priv->wep_is_on;
3765         if (priv->wep_is_on) {
3766                 if (priv->wep_key_len[priv->default_key] > 5)
3767                         mib.encryption_level = 2;
3768                 else
3769                         mib.encryption_level = 1;
3770         } else {
3771                 mib.encryption_level = 0;
3772         }
3773
3774         mib.default_key = priv->default_key;
3775         mib.exclude_unencrypted = priv->exclude_unencrypted;
3776
3777         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3778                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3779
3780         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3781 }
3782
3783 static void build_wpa_mib(struct atmel_private *priv)
3784 {
3785         /* This is for the later (WPA enabled) firmware. */
3786
3787         struct { /* NB this is matched to the hardware, don't change. */
3788                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3789                 u8 receiver_address[6];
3790                 u8 wep_is_on;
3791                 u8 default_key; /* 0..3 */
3792                 u8 group_key;
3793                 u8 exclude_unencrypted;
3794                 u8 encryption_type;
3795                 u8 reserved;
3796
3797                 u32 WEPICV_error_count;
3798                 u32 WEP_excluded_count;
3799
3800                 u8 key_RSC[4][8];
3801         } mib;
3802
3803         int i;
3804
3805         mib.wep_is_on = priv->wep_is_on;
3806         mib.exclude_unencrypted = priv->exclude_unencrypted;
3807         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3808
3809         /* zero all the keys before adding in valid ones. */
3810         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3811
3812         if (priv->wep_is_on) {
3813                 /* There's a comment in the Atmel code to the effect that this
3814                    is only valid when still using WEP, it may need to be set to
3815                    something to use WPA */
3816                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3817
3818                 mib.default_key = mib.group_key = 255;
3819                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3820                         if (priv->wep_key_len[i] > 0) {
3821                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3822                                 if (i == priv->default_key) {
3823                                         mib.default_key = i;
3824                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3825                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3826                                 } else {
3827                                         mib.group_key = i;
3828                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3829                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3830                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3831                                 }
3832                         }
3833                 }
3834                 if (mib.default_key == 255)
3835                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3836                 if (mib.group_key == 255)
3837                         mib.group_key = mib.default_key;
3838
3839         }
3840
3841         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3842 }
3843
3844 static int reset_atmel_card(struct net_device *dev)
3845 {
3846         /* do everything necessary to wake up the hardware, including
3847            waiting for the lightning strike and throwing the knife switch....
3848
3849            set all the Mib values which matter in the card to match
3850            their settings in the atmel_private structure. Some of these
3851            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3852            can only be changed by tearing down the world and coming back through
3853            here.
3854
3855            This routine is also responsible for initialising some
3856            hardware-specific fields in the atmel_private structure,
3857            including a copy of the firmware's hostinfo stucture
3858            which is the route into the rest of the firmare datastructures. */
3859
3860         struct atmel_private *priv = netdev_priv(dev);
3861         u8 configuration;
3862         int old_state = priv->station_state;
3863
3864         /* data to add to the firmware names, in priority order
3865            this implemenents firmware versioning */
3866
3867         static char *firmware_modifier[] = {
3868                 "-wpa",
3869                 "",
3870                 NULL
3871         };
3872
3873         /* reset pccard */
3874         if (priv->bus_type == BUS_TYPE_PCCARD)
3875                 atmel_write16(priv->dev, GCR, 0x0060);
3876
3877         /* stop card , disable interrupts */
3878         atmel_write16(priv->dev, GCR, 0x0040);
3879
3880         if (priv->card_type == CARD_TYPE_EEPROM) {
3881                 /* copy in firmware if needed */
3882                 const struct firmware *fw_entry = NULL;
3883                 unsigned char *fw;
3884                 int len = priv->firmware_length;
3885                 if (!(fw = priv->firmware)) {
3886                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3887                                 if (strlen(priv->firmware_id) == 0) {
3888                                         printk(KERN_INFO
3889                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3890                                                dev->name);
3891                                         printk(KERN_INFO
3892                                                "%s: if not, use the firmware= module parameter.\n",
3893                                                dev->name);
3894                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3895                                 }
3896                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3897                                         printk(KERN_ALERT
3898                                                "%s: firmware %s is missing, cannot continue.\n",
3899                                                dev->name, priv->firmware_id);
3900                                         return 0;
3901                                 }
3902                         } else {
3903                                 int fw_index = 0;
3904                                 int success = 0;
3905
3906                                 /* get firmware filename entry based on firmware type ID */
3907                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3908                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3909                                         fw_index++;
3910
3911                                 /* construct the actual firmware file name */
3912                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3913                                         int i;
3914                                         for (i = 0; firmware_modifier[i]; i++) {
3915                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3916                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3917                                                 priv->firmware_id[31] = '\0';
3918                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3919                                                         success = 1;
3920                                                         break;
3921                                                 }
3922                                         }
3923                                 }
3924                                 if (!success) {
3925                                         printk(KERN_ALERT
3926                                                "%s: firmware %s is missing, cannot start.\n",
3927                                                dev->name, priv->firmware_id);
3928                                         priv->firmware_id[0] = '\0';
3929                                         return 0;
3930                                 }
3931                         }
3932
3933                         fw = fw_entry->data;
3934                         len = fw_entry->size;
3935                 }
3936
3937                 if (len <= 0x6000) {
3938                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3939                         atmel_copy_to_card(priv->dev, 0, fw, len);
3940                         atmel_set_gcr(priv->dev, GCR_REMAP);
3941                 } else {
3942                         /* Remap */
3943                         atmel_set_gcr(priv->dev, GCR_REMAP);
3944                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3945                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3946                         atmel_write16(priv->dev, BSR, 0x2ff);
3947                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3948                 }
3949
3950                 if (fw_entry)
3951                         release_firmware(fw_entry);
3952         }
3953
3954         if (!atmel_wakeup_firmware(priv))
3955                 return 0;
3956
3957         /* Check the version and set the correct flag for wpa stuff,
3958            old and new firmware is incompatible.
3959            The pre-wpa 3com firmware reports major version 5,
3960            the wpa 3com firmware is major version 4 and doesn't need
3961            the 3com broken-ness filter. */
3962         priv->use_wpa = (priv->host_info.major_version == 4);
3963         priv->radio_on_broken = (priv->host_info.major_version == 5);
3964
3965         /* unmask all irq sources */
3966         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3967
3968         /* int Tx system and enable Tx */
3969         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3970         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3971         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3972         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3973
3974         priv->tx_desc_free = priv->host_info.tx_desc_count;
3975         priv->tx_desc_head = 0;
3976         priv->tx_desc_tail = 0;
3977         priv->tx_desc_previous = 0;
3978         priv->tx_free_mem = priv->host_info.tx_buff_size;
3979         priv->tx_buff_head = 0;
3980         priv->tx_buff_tail = 0;
3981
3982         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3983         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3984                                    configuration | FUNC_CTRL_TxENABLE);
3985
3986         /* init Rx system and enable */
3987         priv->rx_desc_head = 0;
3988
3989         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3990         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3991                                    configuration | FUNC_CTRL_RxENABLE);
3992
3993         if (!priv->radio_on_broken) {
3994                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3995                     CMD_STATUS_REJECTED_RADIO_OFF) {
3996                         printk(KERN_INFO
3997                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3998                                dev->name);
3999                         return 0;
4000                 }
4001         }
4002
4003         /* set up enough MIB values to run. */
4004         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4005         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4006         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4007         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4008         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4009         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4010         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4011         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4012                       priv->dev->dev_addr, 6);
4013         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4014         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4015         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4016         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4017         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4018         if (priv->use_wpa)
4019                 build_wpa_mib(priv);
4020         else
4021                 build_wep_mib(priv);
4022
4023         if (old_state == STATION_STATE_READY)
4024         {
4025                 union iwreq_data wrqu;
4026
4027                 wrqu.data.length = 0;
4028                 wrqu.data.flags = 0;
4029                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4030                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4031                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4032         }
4033
4034         return 1;
4035 }
4036
4037 static void atmel_send_command(struct atmel_private *priv, int command,
4038                                void *cmd, int cmd_size)
4039 {
4040         if (cmd)
4041                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4042                                    cmd, cmd_size);
4043
4044         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4045         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4046 }
4047
4048 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4049                                    void *cmd, int cmd_size)
4050 {
4051         int i, status;
4052
4053         atmel_send_command(priv, command, cmd, cmd_size);
4054
4055         for (i = 5000; i; i--) {
4056                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4057                 if (status != CMD_STATUS_IDLE &&
4058                     status != CMD_STATUS_IN_PROGRESS)
4059                         break;
4060                 udelay(20);
4061         }
4062
4063         if (i == 0) {
4064                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4065                 status =  CMD_STATUS_HOST_ERROR;
4066         } else {
4067                 if (command != CMD_EnableRadio)
4068                         status = CMD_STATUS_COMPLETE;
4069         }
4070
4071         return status;
4072 }
4073
4074 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4075 {
4076         struct get_set_mib m;
4077         m.type = type;
4078         m.size = 1;
4079         m.index = index;
4080
4081         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4082         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4083 }
4084
4085 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4086 {
4087         struct get_set_mib m;
4088         m.type = type;
4089         m.size = 1;
4090         m.index = index;
4091         m.data[0] = data;
4092
4093         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4094 }
4095
4096 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4097                             u16 data)
4098 {
4099         struct get_set_mib m;
4100         m.type = type;
4101         m.size = 2;
4102         m.index = index;
4103         m.data[0] = data;
4104         m.data[1] = data >> 8;
4105
4106         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4107 }
4108
4109 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4110                           u8 *data, int data_len)
4111 {
4112         struct get_set_mib m;
4113         m.type = type;
4114         m.size = data_len;
4115         m.index = index;
4116
4117         if (data_len > MIB_MAX_DATA_BYTES)
4118                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4119
4120         memcpy(m.data, data, data_len);
4121         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4122 }
4123
4124 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4125                           u8 *data, int data_len)
4126 {
4127         struct get_set_mib m;
4128         m.type = type;
4129         m.size = data_len;
4130         m.index = index;
4131
4132         if (data_len > MIB_MAX_DATA_BYTES)
4133                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4134
4135         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4136         atmel_copy_to_host(priv->dev, data,
4137                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4138 }
4139
4140 static void atmel_writeAR(struct net_device *dev, u16 data)
4141 {
4142         int i;
4143         outw(data, dev->base_addr + AR);
4144         /* Address register appears to need some convincing..... */
4145         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4146                 outw(data, dev->base_addr + AR);
4147 }
4148
4149 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4150                                unsigned char *src, u16 len)
4151 {
4152         int i;
4153         atmel_writeAR(dev, dest);
4154         if (dest % 2) {
4155                 atmel_write8(dev, DR, *src);
4156                 src++; len--;
4157         }
4158         for (i = len; i > 1 ; i -= 2) {
4159                 u8 lb = *src++;
4160                 u8 hb = *src++;
4161                 atmel_write16(dev, DR, lb | (hb << 8));
4162         }
4163         if (i)
4164                 atmel_write8(dev, DR, *src);
4165 }
4166
4167 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4168                                u16 src, u16 len)
4169 {
4170         int i;
4171         atmel_writeAR(dev, src);
4172         if (src % 2) {
4173                 *dest = atmel_read8(dev, DR);
4174                 dest++; len--;
4175         }
4176         for (i = len; i > 1 ; i -= 2) {
4177                 u16 hw = atmel_read16(dev, DR);
4178                 *dest++ = hw;
4179                 *dest++ = hw >> 8;
4180         }
4181         if (i)
4182                 *dest = atmel_read8(dev, DR);
4183 }
4184
4185 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4186 {
4187         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4188 }
4189
4190 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4191 {
4192         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4193 }
4194
4195 static int atmel_lock_mac(struct atmel_private *priv)
4196 {
4197         int i, j = 20;
4198  retry:
4199         for (i = 5000; i; i--) {
4200                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4201                         break;
4202                 udelay(20);
4203         }
4204
4205         if (!i)
4206                 return 0; /* timed out */
4207
4208         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4209         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4210                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4211                 if (!j--)
4212                         return 0; /* timed out */
4213                 goto retry;
4214         }
4215
4216         return 1;
4217 }
4218
4219 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4220 {
4221         atmel_writeAR(priv->dev, pos);
4222         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4223         atmel_write16(priv->dev, DR, data >> 16);
4224 }
4225
4226 /***************************************************************************/
4227 /* There follows the source form of the MAC address reading firmware       */
4228 /***************************************************************************/
4229 #if 0
4230
4231 /* Copyright 2003 Matthew T. Russotto                                      */
4232 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4233 /* included in "atmel wireless lan drivers" package                        */
4234 /**
4235     This file is part of net.russotto.AtmelMACFW, hereto referred to
4236     as AtmelMACFW
4237
4238     AtmelMACFW is free software; you can redistribute it and/or modify
4239     it under the terms of the GNU General Public License version 2
4240     as published by the Free Software Foundation.
4241
4242     AtmelMACFW is distributed in the hope that it will be useful,
4243     but WITHOUT ANY WARRANTY; without even the implied warranty of
4244     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4245     GNU General Public License for more details.
4246
4247     You should have received a copy of the GNU General Public License
4248     along with AtmelMACFW; if not, write to the Free Software
4249     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4250
4251 ****************************************************************************/
4252 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4253 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4254 /* It only works on SPI EEPROM versions of the card.                       */
4255
4256 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4257 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4258 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4259 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4260 /* MR4, for investigational purposes (maybe we can determine chip type     */
4261 /* from that?)                                                             */
4262
4263         .org 0
4264     .set MRBASE, 0x8000000
4265         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4266         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4267         .set SRAM_BASE,  0x02000000
4268         .set SP_BASE,    0x0F300000
4269         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4270         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4271         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4272         .set STACK_BASE, 0x5600
4273         .set SP_SR, 0x10
4274         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4275         .set SP_RDRF, 1 /* status register bit -- RDR full */
4276         .set SP_SWRST, 0x80
4277         .set SP_SPIEN, 0x1
4278         .set SP_CR, 0   /* control register */
4279         .set SP_MR, 4   /* mode register */
4280         .set SP_RDR, 0x08 /* Read Data Register */
4281         .set SP_TDR, 0x0C /* Transmit Data Register */
4282         .set SP_CSR0, 0x30 /* chip select registers */
4283         .set SP_CSR1, 0x34
4284         .set SP_CSR2, 0x38
4285         .set SP_CSR3, 0x3C
4286         .set NVRAM_CMD_RDSR, 5 /* read status register */
4287         .set NVRAM_CMD_READ, 3 /* read data */
4288         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4289         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4290                                   serial output, since SO is normally high.  But it
4291                                   does cause 8 clock cycles and thus 8 bits to be
4292                                   clocked in to the chip.  See Atmel's SPI
4293                                   controller (e.g. AT91M55800) timing and 4K
4294                                   SPI EEPROM manuals */
4295
4296         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4297         .set NVRAM_IMAGE, 0x02000200
4298         .set NVRAM_LENGTH, 0x0200
4299         .set MAC_ADDRESS_MIB, SRAM_BASE
4300         .set MAC_ADDRESS_LENGTH, 6
4301         .set MAC_BOOT_FLAG, 0x10
4302         .set MR1, 0
4303         .set MR2, 4
4304         .set MR3, 8
4305         .set MR4, 0xC
4306 RESET_VECTOR:
4307         b RESET_HANDLER
4308 UNDEF_VECTOR:
4309         b HALT1
4310 SWI_VECTOR:
4311         b HALT1
4312 IABORT_VECTOR:
4313         b HALT1
4314 DABORT_VECTOR:
4315 RESERVED_VECTOR:
4316         b HALT1
4317 IRQ_VECTOR:
4318         b HALT1
4319 FIQ_VECTOR:
4320         b HALT1
4321 HALT1:  b HALT1
4322 RESET_HANDLER:
4323         mov     r0, #CPSR_INITIAL
4324         msr     CPSR_c, r0      /* This is probably unnecessary */
4325
4326 /* I'm guessing this is initializing clock generator electronics for SPI */
4327         ldr     r0, =SPI_CGEN_BASE
4328         mov     r1, #0
4329         mov     r1, r1, lsl #3
4330         orr     r1,r1, #0
4331         str     r1, [r0]
4332         ldr     r1, [r0, #28]
4333         bic     r1, r1, #16
4334         str     r1, [r0, #28]
4335         mov     r1, #1
4336         str     r1, [r0, #8]
4337
4338         ldr     r0, =MRBASE
4339         mov     r1, #0
4340         strh    r1, [r0, #MR1]
4341         strh    r1, [r0, #MR2]
4342         strh    r1, [r0, #MR3]
4343         strh    r1, [r0, #MR4]
4344
4345         mov     sp, #STACK_BASE
4346         bl      SP_INIT
4347         mov     r0, #10
4348         bl      DELAY9
4349         bl      GET_MAC_ADDR
4350         bl      GET_WHOLE_NVRAM
4351         ldr     r0, =MRBASE
4352         ldr     r1, =MAC_ADDRESS_MIB
4353         strh    r1, [r0, #MR2]
4354         ldr     r1, =NVRAM_IMAGE
4355         strh    r1, [r0, #MR4]
4356         mov     r1, #MAC_BOOT_FLAG
4357         strh    r1, [r0, #MR3]
4358 HALT2:  b HALT2
4359 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4360 GET_WHOLE_NVRAM:
4361         stmdb   sp!, {lr}
4362         mov     r2, #0 /* 0th bytes of NVRAM */
4363         mov     r3, #NVRAM_LENGTH
4364         mov     r1, #0          /* not used in routine */
4365         ldr     r0, =NVRAM_IMAGE
4366         bl      NVRAM_XFER
4367         ldmia   sp!, {lr}
4368         bx      lr
4369 .endfunc
4370
4371 .func Get_MAC_Addr, GET_MAC_ADDR
4372 GET_MAC_ADDR:
4373         stmdb   sp!, {lr}
4374         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4375         mov     r3, #MAC_ADDRESS_LENGTH
4376         mov     r1, #0          /* not used in routine */
4377         ldr     r0, =MAC_ADDRESS_MIB
4378         bl      NVRAM_XFER
4379         ldmia   sp!, {lr}
4380         bx      lr
4381 .endfunc
4382 .ltorg
4383 .func Delay9, DELAY9
4384 DELAY9:
4385         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4386 DELAYLOOP:
4387         beq     DELAY9_done
4388         subs    r0, r0, #1
4389         b       DELAYLOOP
4390 DELAY9_done:
4391         bx      lr
4392 .endfunc
4393
4394 .func SP_Init, SP_INIT
4395 SP_INIT:
4396         mov     r1, #SP_SWRST
4397         ldr     r0, =SP_BASE
4398         str     r1, [r0, #SP_CR] /* reset the SPI */
4399         mov     r1, #0
4400         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4401         mov     r1, #SP_SPIEN
4402         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4403         str     r1, [r0, #SP_CR] /* enable the SPI */
4404
4405 /*  My guess would be this turns on the SPI clock */
4406         ldr     r3, =SPI_CGEN_BASE
4407         ldr     r1, [r3, #28]
4408         orr     r1, r1, #0x2000
4409         str     r1, [r3, #28]
4410
4411         ldr     r1, =0x2000c01
4412         str     r1, [r0, #SP_CSR0]
4413         ldr     r1, =0x2000201
4414         str     r1, [r0, #SP_CSR1]
4415         str     r1, [r0, #SP_CSR2]
4416         str     r1, [r0, #SP_CSR3]
4417         ldr     r1, [r0, #SP_SR]
4418         ldr     r0, [r0, #SP_RDR]
4419         bx      lr
4420 .endfunc
4421 .func NVRAM_Init, NVRAM_INIT
4422 NVRAM_INIT:
4423         ldr     r1, =SP_BASE
4424         ldr     r0, [r1, #SP_RDR]
4425         mov     r0, #NVRAM_CMD_RDSR
4426         str     r0, [r1, #SP_TDR]
4427 SP_loop1:
4428         ldr     r0, [r1, #SP_SR]
4429         tst     r0, #SP_TDRE
4430         beq     SP_loop1
4431
4432         mov     r0, #SPI_8CLOCKS
4433         str     r0, [r1, #SP_TDR]
4434 SP_loop2:
4435         ldr     r0, [r1, #SP_SR]
4436         tst     r0, #SP_TDRE
4437         beq     SP_loop2
4438
4439         ldr     r0, [r1, #SP_RDR]
4440 SP_loop3:
4441         ldr     r0, [r1, #SP_SR]
4442         tst     r0, #SP_RDRF
4443         beq     SP_loop3
4444
4445         ldr     r0, [r1, #SP_RDR]
4446         and     r0, r0, #255
4447         bx      lr
4448 .endfunc
4449
4450 .func NVRAM_Xfer, NVRAM_XFER
4451         /* r0 = dest address */
4452         /* r1 = not used */
4453         /* r2 = src address within NVRAM */
4454         /* r3 = length */
4455 NVRAM_XFER:
4456         stmdb   sp!, {r4, r5, lr}
4457         mov     r5, r0          /* save r0 (dest address) */
4458         mov     r4, r3          /* save r3 (length) */
4459         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4460         and     r0, r0, #8
4461         add     r0, r0, #NVRAM_CMD_READ
4462         ldr     r1, =NVRAM_SCRATCH
4463         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4464         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4465 _local1:
4466         bl      NVRAM_INIT
4467         tst     r0, #NVRAM_SR_RDY
4468         bne     _local1
4469         mov     r0, #20
4470         bl      DELAY9
4471         mov     r2, r4          /* length */
4472         mov     r1, r5          /* dest address */
4473         mov     r0, #2          /* bytes to transfer in command */
4474         bl      NVRAM_XFER2
4475         ldmia   sp!, {r4, r5, lr}
4476         bx      lr
4477 .endfunc
4478
4479 .func NVRAM_Xfer2, NVRAM_XFER2
4480 NVRAM_XFER2:
4481         stmdb   sp!, {r4, r5, r6, lr}
4482         ldr     r4, =SP_BASE
4483         mov     r3, #0
4484         cmp     r0, #0
4485         bls     _local2
4486         ldr     r5, =NVRAM_SCRATCH
4487 _local4:
4488         ldrb    r6, [r5, r3]
4489         str     r6, [r4, #SP_TDR]
4490 _local3:
4491         ldr     r6, [r4, #SP_SR]
4492         tst     r6, #SP_TDRE
4493         beq     _local3
4494         add     r3, r3, #1
4495         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4496         blo     _local4
4497 _local2:
4498         mov     r3, #SPI_8CLOCKS
4499         str     r3, [r4, #SP_TDR]
4500         ldr     r0, [r4, #SP_RDR]
4501 _local5:
4502         ldr     r0, [r4, #SP_SR]
4503         tst     r0, #SP_RDRF
4504         beq     _local5
4505         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 */
4506         mov     r0, #0
4507         cmp     r2, #0  /* r2 is # of bytes to copy in */
4508         bls     _local6
4509 _local7:
4510         ldr     r5, [r4, #SP_SR]
4511         tst     r5, #SP_TDRE
4512         beq     _local7
4513         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4514 _local8:
4515         ldr     r5, [r4, #SP_SR]
4516         tst     r5, #SP_RDRF
4517         beq     _local8
4518         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4519         strb    r5, [r1], #1 /* postindexed */
4520         add     r0, r0, #1
4521         cmp     r0, r2
4522         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4523 _local6:
4524         mov     r0, #200
4525         bl      DELAY9
4526         ldmia   sp!, {r4, r5, r6, lr}
4527         bx      lr
4528 #endif