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 MIB_MAX_DATA_BYTES    212
 141 #define MIB_HEADER_SIZE       4    /* first four fields */
 142
 143 struct get_set_mib {
 144         u8 type;
 145         u8 size;
 146         u8 index;
 147         u8 reserved;
 148         u8 data[MIB_MAX_DATA_BYTES];
 149 };
 150
 151 struct rx_desc {
 152         u32          Next;
 153         u16          MsduPos;
 154         u16          MsduSize;
 155
 156         u8           State;
 157         u8           Status;
 158         u8           Rate;
 159         u8           Rssi;
 160         u8           LinkQuality;
 161         u8           PreambleType;
 162         u16          Duration;
 163         u32          RxTime;
 164 };
 165
 166 #define RX_DESC_FLAG_VALID       0x80
 167 #define RX_DESC_FLAG_CONSUMED    0x40
 168 #define RX_DESC_FLAG_IDLE        0x00
 169
 170 #define RX_STATUS_SUCCESS        0x00
 171
 172 #define RX_DESC_MSDU_POS_OFFSET      4
 173 #define RX_DESC_MSDU_SIZE_OFFSET     6
 174 #define RX_DESC_FLAGS_OFFSET         8
 175 #define RX_DESC_STATUS_OFFSET        9
 176 #define RX_DESC_RSSI_OFFSET          11
 177 #define RX_DESC_LINK_QUALITY_OFFSET  12
 178 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 179 #define RX_DESC_DURATION_OFFSET      14
 180 #define RX_DESC_RX_TIME_OFFSET       16
 181
 182 struct tx_desc {
 183         u32       NextDescriptor;
 184         u16       TxStartOfFrame;
 185         u16       TxLength;
 186
 187         u8        TxState;
 188         u8        TxStatus;
 189         u8        RetryCount;
 190
 191         u8        TxRate;
 192
 193         u8        KeyIndex;
 194         u8        ChiperType;
 195         u8        ChipreLength;
 196         u8        Reserved1;
 197
 198         u8        Reserved;
 199         u8        PacketType;
 200         u16       HostTxLength;
 201 };
 202
 203 #define TX_DESC_NEXT_OFFSET          0
 204 #define TX_DESC_POS_OFFSET           4
 205 #define TX_DESC_SIZE_OFFSET          6
 206 #define TX_DESC_FLAGS_OFFSET         8
 207 #define TX_DESC_STATUS_OFFSET        9
 208 #define TX_DESC_RETRY_OFFSET         10
 209 #define TX_DESC_RATE_OFFSET          11
 210 #define TX_DESC_KEY_INDEX_OFFSET     12
 211 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 212 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 213 #define TX_DESC_PACKET_TYPE_OFFSET   17
 214 #define TX_DESC_HOST_LENGTH_OFFSET   18
 215
 216 ///////////////////////////////////////////////////////
 217 // Host-MAC interface
 218 ///////////////////////////////////////////////////////
 219
 220 #define TX_STATUS_SUCCESS       0x00
 221
 222 #define TX_FIRM_OWN             0x80
 223 #define TX_DONE                 0x40
 224
 225 #define TX_ERROR                0x01
 226
 227 #define TX_PACKET_TYPE_DATA     0x01
 228 #define TX_PACKET_TYPE_MGMT     0x02
 229
 230 #define ISR_EMPTY               0x00        // no bits set in ISR
 231 #define ISR_TxCOMPLETE          0x01        // packet transmitted
 232 #define ISR_RxCOMPLETE          0x02        // packet received
 233 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
 234 #define ISR_FATAL_ERROR         0x08        // Fatal error
 235 #define ISR_COMMAND_COMPLETE    0x10        // command completed
 236 #define ISR_OUT_OF_RANGE        0x20        // command completed
 237 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
 238 #define ISR_GENERIC_IRQ         0x80
 239
 240 #define Local_Mib_Type          0x01
 241 #define Mac_Address_Mib_Type    0x02
 242 #define Mac_Mib_Type            0x03
 243 #define Statistics_Mib_Type     0x04
 244 #define Mac_Mgmt_Mib_Type       0x05
 245 #define Mac_Wep_Mib_Type        0x06
 246 #define Phy_Mib_Type            0x07
 247 #define Multi_Domain_MIB        0x08
 248
 249 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 250 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 251 #define MAC_MIB_RTS_THRESHOLD_POS             10
 252 #define MAC_MIB_SHORT_RETRY_POS               16
 253 #define MAC_MIB_LONG_RETRY_POS                17
 254 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 255 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 256 #define MAC_MGMT_MIB_STATION_ID_POS           6
 257 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 258 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 259 #define MAC_MGMT_MIB_PS_MODE_POS              53
 260 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 261 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 262 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 263 #define PHY_MIB_CHANNEL_POS                   14
 264 #define PHY_MIB_RATE_SET_POS                  20
 265 #define PHY_MIB_REG_DOMAIN_POS                26
 266 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 267 #define LOCAL_MIB_SSID_SIZE                   5
 268 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 269 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 270 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 271 #define LOCAL_MIB_PREAMBLE_TYPE               9
 272 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 273
 274 #define         CMD_Set_MIB_Vars              0x01
 275 #define         CMD_Get_MIB_Vars              0x02
 276 #define         CMD_Scan                      0x03
 277 #define         CMD_Join                      0x04
 278 #define         CMD_Start                     0x05
 279 #define         CMD_EnableRadio               0x06
 280 #define         CMD_DisableRadio              0x07
 281 #define         CMD_SiteSurvey                0x0B
 282
 283 #define         CMD_STATUS_IDLE                   0x00
 284 #define         CMD_STATUS_COMPLETE               0x01
 285 #define         CMD_STATUS_UNKNOWN                0x02
 286 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 287 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 288 #define         CMD_STATUS_TIME_OUT               0x07
 289 #define         CMD_STATUS_IN_PROGRESS            0x08
 290 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 291 #define         CMD_STATUS_HOST_ERROR             0xFF
 292 #define         CMD_STATUS_BUSY                   0xFE
 293
 294 #define CMD_BLOCK_COMMAND_OFFSET        0
 295 #define CMD_BLOCK_STATUS_OFFSET         1
 296 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 297
 298 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 299
 300 #define MGMT_FRAME_BODY_OFFSET          24
 301 #define MAX_AUTHENTICATION_RETRIES      3
 302 #define MAX_ASSOCIATION_RETRIES         3
 303
 304 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 305
 306 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 307 #define LOOP_RETRY_LIMIT   500000
 308
 309 #define ACTIVE_MODE     1
 310 #define PS_MODE         2
 311
 312 #define MAX_ENCRYPTION_KEYS 4
 313 #define MAX_ENCRYPTION_KEY_SIZE 40
 314
 315 ///////////////////////////////////////////////////////////////////////////
 316 // 802.11 related definitions
 317 ///////////////////////////////////////////////////////////////////////////
 318
 319 //
 320 // Regulatory Domains
 321 //
 322
 323 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
 324 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
 325 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
 326 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
 327 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
 328 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
 329 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
 330 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
 331
 332 #define BSS_TYPE_AD_HOC         1
 333 #define BSS_TYPE_INFRASTRUCTURE 2
 334
 335 #define SCAN_TYPE_ACTIVE        0
 336 #define SCAN_TYPE_PASSIVE       1
 337
 338 #define LONG_PREAMBLE           0
 339 #define SHORT_PREAMBLE          1
 340 #define AUTO_PREAMBLE           2
 341
 342 #define DATA_FRAME_WS_HEADER_SIZE   30
 343
 344 /* promiscuous mode control */
 345 #define PROM_MODE_OFF                   0x0
 346 #define PROM_MODE_UNKNOWN               0x1
 347 #define PROM_MODE_CRC_FAILED            0x2
 348 #define PROM_MODE_DUPLICATED            0x4
 349 #define PROM_MODE_MGMT                  0x8
 350 #define PROM_MODE_CTRL                  0x10
 351 #define PROM_MODE_BAD_PROTOCOL          0x20
 352
 353 #define IFACE_INT_STATUS_OFFSET         0
 354 #define IFACE_INT_MASK_OFFSET           1
 355 #define IFACE_LOCKOUT_HOST_OFFSET       2
 356 #define IFACE_LOCKOUT_MAC_OFFSET        3
 357 #define IFACE_FUNC_CTRL_OFFSET          28
 358 #define IFACE_MAC_STAT_OFFSET           30
 359 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 360
 361 #define CIPHER_SUITE_NONE     0
 362 #define CIPHER_SUITE_WEP_64   1
 363 #define CIPHER_SUITE_TKIP     2
 364 #define CIPHER_SUITE_AES      3
 365 #define CIPHER_SUITE_CCX      4
 366 #define CIPHER_SUITE_WEP_128  5
 367
 368 //
 369 // IFACE MACROS & definitions
 370 //
 371 //
 372
 373 // FuncCtrl field:
 374 //
 375 #define FUNC_CTRL_TxENABLE              0x10
 376 #define FUNC_CTRL_RxENABLE              0x20
 377 #define FUNC_CTRL_INIT_COMPLETE         0x01
 378
 379 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 380    For copyright information and source see the end of this file. */
 381 static u8 mac_reader[] = {
 382         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
 383         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
 384         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 385         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
 386         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
 387         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
 388         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
 389         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
 390         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
 391         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
 392         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 393         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 394         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 395         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 396         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
 397         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
 398         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
 399         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
 400         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
 401         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
 402         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
 403         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
 404         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
 405         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 406         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 407         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
 408         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
 409         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
 410         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
 411         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
 412         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
 413         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
 414         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
 415         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
 416         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
 417         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
 418         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
 419         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
 420         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
 421         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
 422         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
 423         0x00,0x01,0x00,0x02
 424 };
 425
 426 struct atmel_private {
 427         void *card; /* Bus dependent stucture varies for PCcard */
 428         int (*present_callback)(void *); /* And callback which uses it */
 429         char firmware_id[32];
 430         AtmelFWType firmware_type;
 431         u8 *firmware;
 432         int firmware_length;
 433         struct timer_list management_timer;
 434         struct net_device *dev;
 435         struct device *sys_dev;
 436         struct iw_statistics wstats;
 437         struct net_device_stats stats;  // device stats
 438         spinlock_t irqlock, timerlock;  // spinlocks
 439         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 440         enum {
 441                 CARD_TYPE_PARALLEL_FLASH,
 442                 CARD_TYPE_SPI_FLASH,
 443                 CARD_TYPE_EEPROM
 444         } card_type;
 445         int do_rx_crc; /* If we need to CRC incoming packets */
 446         int probe_crc; /* set if we don't yet know */
 447         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 448         u16 rx_desc_head;
 449         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 450         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 451
 452         u16 frag_seq, frag_len, frag_no;
 453         u8 frag_source[6];
 454
 455         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 456         u8 group_cipher_suite, pairwise_cipher_suite;
 457         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 458         int wep_key_len[MAX_ENCRYPTION_KEYS];
 459         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 460
 461         u16 host_info_base;
 462         struct host_info_struct {
 463                 /* NB this is matched to the hardware, don't change. */
 464                 u8 volatile int_status;
 465                 u8 volatile int_mask;
 466                 u8 volatile lockout_host;
 467                 u8 volatile lockout_mac;
 468
 469                 u16 tx_buff_pos;
 470                 u16 tx_buff_size;
 471                 u16 tx_desc_pos;
 472                 u16 tx_desc_count;
 473
 474                 u16 rx_buff_pos;
 475                 u16 rx_buff_size;
 476                 u16 rx_desc_pos;
 477                 u16 rx_desc_count;
 478
 479                 u16 build_version;
 480                 u16 command_pos;
 481
 482                 u16 major_version;
 483                 u16 minor_version;
 484
 485                 u16 func_ctrl;
 486                 u16 mac_status;
 487                 u16 generic_IRQ_type;
 488                 u8  reserved[2];
 489         } host_info;
 490
 491         enum {
 492                 STATION_STATE_SCANNING,
 493                 STATION_STATE_JOINNING,
 494                 STATION_STATE_AUTHENTICATING,
 495                 STATION_STATE_ASSOCIATING,
 496                 STATION_STATE_READY,
 497                 STATION_STATE_REASSOCIATING,
 498                 STATION_STATE_DOWN,
 499                 STATION_STATE_MGMT_ERROR
 500         } station_state;
 501
 502         int operating_mode, power_mode;
 503         time_t last_qual;
 504         int beacons_this_sec;
 505         int channel;
 506         int reg_domain, config_reg_domain;
 507         int tx_rate;
 508         int auto_tx_rate;
 509         int rts_threshold;
 510         int frag_threshold;
 511         int long_retry, short_retry;
 512         int preamble;
 513         int default_beacon_period, beacon_period, listen_interval;
 514         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 515         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 516         enum {
 517                 SITE_SURVEY_IDLE,
 518                 SITE_SURVEY_IN_PROGRESS,
 519                 SITE_SURVEY_COMPLETED
 520         } site_survey_state;
 521         time_t last_survey;
 522
 523         int station_was_associated, station_is_associated;
 524         int fast_scan;
 525
 526         struct bss_info {
 527                 int channel;
 528                 int SSIDsize;
 529                 int RSSI;
 530                 int UsingWEP;
 531                 int preamble;
 532                 int beacon_period;
 533                 int BSStype;
 534                 u8 BSSID[6];
 535                 u8 SSID[MAX_SSID_LENGTH];
 536         } BSSinfo[MAX_BSS_ENTRIES];
 537         int BSS_list_entries, current_BSS;
 538         int connect_to_any_BSS;
 539         int SSID_size, new_SSID_size;
 540         u8 CurrentBSSID[6], BSSID[6];
 541         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 542         u64 last_beacon_timestamp;
 543         u8 rx_buf[MAX_WIRELESS_BODY];
 544 };
 545
 546 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
 547
 548 static const struct {
 549         int reg_domain;
 550         int min, max;
 551         char *name;
 552 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 553                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 554                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 555                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 556                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 557                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 558                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 559                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 560
 561 static void build_wpa_mib(struct atmel_private *priv);
 562 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 563 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 564                                unsigned char *src, u16 len);
 565 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 566                                u16 src, u16 len);
 567 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 568 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 569 static int atmel_lock_mac(struct atmel_private *priv);
 570 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 571 static void atmel_command_irq(struct atmel_private *priv);
 572 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 573 static void atmel_management_frame(struct atmel_private *priv,
 574                                    struct ieee80211_hdr_4addr *header,
 575                                    u16 frame_len, u8 rssi);
 576 static void atmel_management_timer(u_long a);
 577 static void atmel_send_command(struct atmel_private *priv, int command,
 578                                void *cmd, int cmd_size);
 579 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 580                                    void *cmd, int cmd_size);
 581 static void atmel_transmit_management_frame(struct atmel_private *priv,
 582                                             struct ieee80211_hdr_4addr *header,
 583                                             u8 *body, int body_len);
 584
 585 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 586 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 587                            u8 data);
 588 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 589                             u16 data);
 590 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 591                           u8 *data, int data_len);
 592 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 593                           u8 *data, int data_len);
 594 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 595 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 596 static void atmel_smooth_qual(struct atmel_private *priv);
 597 static void atmel_writeAR(struct net_device *dev, u16 data);
 598 static int probe_atmel_card(struct net_device *dev);
 599 static int reset_atmel_card(struct net_device *dev );
 600 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 601 int atmel_open (struct net_device *dev);
 602
 603 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 604 {
 605         return priv->host_info_base + offset;
 606 }
 607
 608 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 609 {
 610         return priv->host_info.command_pos + offset;
 611 }
 612
 613 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 614 {
 615         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 616 }
 617
 618 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 619 {
 620         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 621 }
 622
 623 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 624 {
 625         return inb(dev->base_addr + offset);
 626 }
 627
 628 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 629 {
 630         outb(data, dev->base_addr + offset);
 631 }
 632
 633 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 634 {
 635         return inw(dev->base_addr + offset);
 636 }
 637
 638 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 639 {
 640         outw(data, dev->base_addr + offset);
 641 }
 642
 643 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 644 {
 645         atmel_writeAR(priv->dev, pos);
 646         return atmel_read8(priv->dev, DR);
 647 }
 648
 649 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 650 {
 651         atmel_writeAR(priv->dev, pos);
 652         atmel_write8(priv->dev, DR, data);
 653 }
 654
 655 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 656 {
 657         atmel_writeAR(priv->dev, pos);
 658         return atmel_read16(priv->dev, DR);
 659 }
 660
 661 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 662 {
 663         atmel_writeAR(priv->dev, pos);
 664         atmel_write16(priv->dev, DR, data);
 665 }
 666
 667 static const struct iw_handler_def atmel_handler_def;
 668
 669 static void tx_done_irq(struct atmel_private *priv)
 670 {
 671         int i;
 672
 673         for (i = 0;
 674              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 675                      i < priv->host_info.tx_desc_count;
 676              i++) {
 677                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 678                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 679                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 680
 681                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 682
 683                 priv->tx_free_mem += msdu_size;
 684                 priv->tx_desc_free++;
 685
 686                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 687                         priv->tx_buff_head = 0;
 688                 else
 689                         priv->tx_buff_head += msdu_size;
 690
 691                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 692                         priv->tx_desc_head++ ;
 693                 else
 694                         priv->tx_desc_head = 0;
 695
 696                 if (type == TX_PACKET_TYPE_DATA) {
 697                         if (status == TX_STATUS_SUCCESS)
 698                                 priv->stats.tx_packets++;
 699                         else
 700                                 priv->stats.tx_errors++;
 701                         netif_wake_queue(priv->dev);
 702                 }
 703         }
 704 }
 705
 706 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 707 {
 708         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 709
 710         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 711                 return 0;
 712
 713         if (bottom_free >= len)
 714                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 715
 716         if (priv->tx_free_mem - bottom_free >= len) {
 717                 priv->tx_buff_tail = 0;
 718                 return priv->host_info.tx_buff_pos;
 719         }
 720
 721         return 0;
 722 }
 723
 724 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 725                                  u16 len, u16 buff, u8 type)
 726 {
 727         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 728         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 729         if (!priv->use_wpa)
 730                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 731         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 732         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 733         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 734         if (priv->use_wpa) {
 735                 int cipher_type, cipher_length;
 736                 if (is_bcast) {
 737                         cipher_type = priv->group_cipher_suite;
 738                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 739                             cipher_type == CIPHER_SUITE_WEP_128)
 740                                 cipher_length = 8;
 741                         else if (cipher_type == CIPHER_SUITE_TKIP)
 742                                 cipher_length = 12;
 743                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 744                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 745                                 cipher_type = priv->pairwise_cipher_suite;
 746                                 cipher_length = 8;
 747                         } else {
 748                                 cipher_type = CIPHER_SUITE_NONE;
 749                                 cipher_length = 0;
 750                         }
 751                 } else {
 752                         cipher_type = priv->pairwise_cipher_suite;
 753                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 754                             cipher_type == CIPHER_SUITE_WEP_128)
 755                                 cipher_length = 8;
 756                         else if (cipher_type == CIPHER_SUITE_TKIP)
 757                                 cipher_length = 12;
 758                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 759                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 760                                 cipher_type = priv->group_cipher_suite;
 761                                 cipher_length = 8;
 762                         } else {
 763                                 cipher_type = CIPHER_SUITE_NONE;
 764                                 cipher_length = 0;
 765                         }
 766                 }
 767
 768                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 769                             cipher_type);
 770                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 771                             cipher_length);
 772         }
 773         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 774         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 775         if (priv->tx_desc_previous != priv->tx_desc_tail)
 776                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 777         priv->tx_desc_previous = priv->tx_desc_tail;
 778         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 779                 priv->tx_desc_tail++;
 780         else
 781                 priv->tx_desc_tail = 0;
 782         priv->tx_desc_free--;
 783         priv->tx_free_mem -= len;
 784 }
 785
 786 static int start_tx(struct sk_buff *skb, struct net_device *dev)
 787 {
 788         struct atmel_private *priv = netdev_priv(dev);
 789         struct ieee80211_hdr_4addr header;
 790         unsigned long flags;
 791         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 792         u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
 793
 794         if (priv->card && priv->present_callback &&
 795             !(*priv->present_callback)(priv->card)) {
 796                 priv->stats.tx_errors++;
 797                 dev_kfree_skb(skb);
 798                 return 0;
 799         }
 800
 801         if (priv->station_state != STATION_STATE_READY) {
 802                 priv->stats.tx_errors++;
 803                 dev_kfree_skb(skb);
 804                 return 0;
 805         }
 806
 807         /* first ensure the timer func cannot run */
 808         spin_lock_bh(&priv->timerlock);
 809         /* then stop the hardware ISR */
 810         spin_lock_irqsave(&priv->irqlock, flags);
 811         /* nb doing the above in the opposite order will deadlock */
 812
 813         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 814            12 first bytes (containing DA/SA) and put them in the appropriate
 815            fields of the Wireless Header. Thus the packet length is then the
 816            initial + 18 (+30-12) */
 817
 818         if (!(buff = find_tx_buff(priv, len + 18))) {
 819                 priv->stats.tx_dropped++;
 820                 spin_unlock_irqrestore(&priv->irqlock, flags);
 821                 spin_unlock_bh(&priv->timerlock);
 822                 netif_stop_queue(dev);
 823                 return 1;
 824         }
 825
 826         frame_ctl = IEEE80211_FTYPE_DATA;
 827         header.duration_id = 0;
 828         header.seq_ctl = 0;
 829         if (priv->wep_is_on)
 830                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 831         if (priv->operating_mode == IW_MODE_ADHOC) {
 832                 memcpy(&header.addr1, skb->data, 6);
 833                 memcpy(&header.addr2, dev->dev_addr, 6);
 834                 memcpy(&header.addr3, priv->BSSID, 6);
 835         } else {
 836                 frame_ctl |= IEEE80211_FCTL_TODS;
 837                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 838                 memcpy(&header.addr2, dev->dev_addr, 6);
 839                 memcpy(&header.addr3, skb->data, 6);
 840         }
 841
 842         if (priv->use_wpa)
 843                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 844
 845         header.frame_ctl = cpu_to_le16(frame_ctl);
 846         /* Copy the wireless header into the card */
 847         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 848         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 849         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 850         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 851
 852         /* low bit of first byte of destination tells us if broadcast */
 853         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 854         dev->trans_start = jiffies;
 855         priv->stats.tx_bytes += len;
 856
 857         spin_unlock_irqrestore(&priv->irqlock, flags);
 858         spin_unlock_bh(&priv->timerlock);
 859         dev_kfree_skb(skb);
 860
 861         return 0;
 862 }
 863
 864 static void atmel_transmit_management_frame(struct atmel_private *priv,
 865                                             struct ieee80211_hdr_4addr *header,
 866                                             u8 *body, int body_len)
 867 {
 868         u16 buff;
 869         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 870
 871         if (!(buff = find_tx_buff(priv, len)))
 872                 return;
 873
 874         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 875         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 876         priv->tx_buff_tail += len;
 877         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 878 }
 879
 880 static void fast_rx_path(struct atmel_private *priv,
 881                          struct ieee80211_hdr_4addr *header,
 882                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 883 {
 884         /* fast path: unfragmented packet copy directly into skbuf */
 885         u8 mac4[6];
 886         struct sk_buff  *skb;
 887         unsigned char *skbp;
 888
 889         /* get the final, mac 4 header field, this tells us encapsulation */
 890         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 891         msdu_size -= 6;
 892
 893         if (priv->do_rx_crc) {
 894                 crc = crc32_le(crc, mac4, 6);
 895                 msdu_size -= 4;
 896         }
 897
 898         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 899                 priv->stats.rx_dropped++;
 900                 return;
 901         }
 902
 903         skb_reserve(skb, 2);
 904         skbp = skb_put(skb, msdu_size + 12);
 905         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 906
 907         if (priv->do_rx_crc) {
 908                 u32 netcrc;
 909                 crc = crc32_le(crc, skbp + 12, msdu_size);
 910                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 911                 if ((crc ^ 0xffffffff) != netcrc) {
 912                         priv->stats.rx_crc_errors++;
 913                         dev_kfree_skb(skb);
 914                         return;
 915                 }
 916         }
 917
 918         memcpy(skbp, header->addr1, 6); /* destination address */
 919         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 920                 memcpy(&skbp[6], header->addr3, 6);
 921         else
 922                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 923
 924         priv->dev->last_rx = jiffies;
 925         skb->dev = priv->dev;
 926         skb->protocol = eth_type_trans(skb, priv->dev);
 927         skb->ip_summed = CHECKSUM_NONE;
 928         netif_rx(skb);
 929         priv->stats.rx_bytes += 12 + msdu_size;
 930         priv->stats.rx_packets++;
 931 }
 932
 933 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 934    It doesn't matter that this is slow: it is only used to proble the first few
 935    packets. */
 936 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 937 {
 938         int i = msdu_size - 4;
 939         u32 netcrc, crc = 0xffffffff;
 940
 941         if (msdu_size < 4)
 942                 return 0;
 943
 944         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 945
 946         atmel_writeAR(priv->dev, packet_loc);
 947         while (i--) {
 948                 u8 octet = atmel_read8(priv->dev, DR);
 949                 crc = crc32_le(crc, &octet, 1);
 950         }
 951
 952         return (crc ^ 0xffffffff) == netcrc;
 953 }
 954
 955 static void frag_rx_path(struct atmel_private *priv,
 956                          struct ieee80211_hdr_4addr *header,
 957                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 958                          u8 frag_no, int more_frags)
 959 {
 960         u8 mac4[6];
 961         u8 source[6];
 962         struct sk_buff *skb;
 963
 964         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 965                 memcpy(source, header->addr3, 6);
 966         else
 967                 memcpy(source, header->addr2, 6);
 968
 969         rx_packet_loc += 24; /* skip header */
 970
 971         if (priv->do_rx_crc)
 972                 msdu_size -= 4;
 973
 974         if (frag_no == 0) { /* first fragment */
 975                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 976                 msdu_size -= 6;
 977                 rx_packet_loc += 6;
 978
 979                 if (priv->do_rx_crc)
 980                         crc = crc32_le(crc, mac4, 6);
 981
 982                 priv->frag_seq = seq_no;
 983                 priv->frag_no = 1;
 984                 priv->frag_len = msdu_size;
 985                 memcpy(priv->frag_source, source, 6);
 986                 memcpy(&priv->rx_buf[6], source, 6);
 987                 memcpy(priv->rx_buf, header->addr1, 6);
 988
 989                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 990
 991                 if (priv->do_rx_crc) {
 992                         u32 netcrc;
 993                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 994                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 995                         if ((crc ^ 0xffffffff) != netcrc) {
 996                                 priv->stats.rx_crc_errors++;
 997                                 memset(priv->frag_source, 0xff, 6);
 998                         }
 999                 }
1000
1001         } else if (priv->frag_no == frag_no &&
1002                    priv->frag_seq == seq_no &&
1003                    memcmp(priv->frag_source, source, 6) == 0) {
1004
1005                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1006                                    rx_packet_loc, msdu_size);
1007                 if (priv->do_rx_crc) {
1008                         u32 netcrc;
1009                         crc = crc32_le(crc,
1010                                        &priv->rx_buf[12 + priv->frag_len],
1011                                        msdu_size);
1012                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1013                         if ((crc ^ 0xffffffff) != netcrc) {
1014                                 priv->stats.rx_crc_errors++;
1015                                 memset(priv->frag_source, 0xff, 6);
1016                                 more_frags = 1; /* don't send broken assembly */
1017                         }
1018                 }
1019
1020                 priv->frag_len += msdu_size;
1021                 priv->frag_no++;
1022
1023                 if (!more_frags) { /* last one */
1024                         memset(priv->frag_source, 0xff, 6);
1025                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1026                                 priv->stats.rx_dropped++;
1027                         } else {
1028                                 skb_reserve(skb, 2);
1029                                 memcpy(skb_put(skb, priv->frag_len + 12),
1030                                        priv->rx_buf,
1031                                        priv->frag_len + 12);
1032                                 priv->dev->last_rx = jiffies;
1033                                 skb->dev = priv->dev;
1034                                 skb->protocol = eth_type_trans(skb, priv->dev);
1035                                 skb->ip_summed = CHECKSUM_NONE;
1036                                 netif_rx(skb);
1037                                 priv->stats.rx_bytes += priv->frag_len + 12;
1038                                 priv->stats.rx_packets++;
1039                         }
1040                 }
1041         } else
1042                 priv->wstats.discard.fragment++;
1043 }
1044
1045 static void rx_done_irq(struct atmel_private *priv)
1046 {
1047         int i;
1048         struct ieee80211_hdr_4addr header;
1049
1050         for (i = 0;
1051              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1052                      i < priv->host_info.rx_desc_count;
1053              i++) {
1054
1055                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1056                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1057                 u32 crc = 0xffffffff;
1058
1059                 if (status != RX_STATUS_SUCCESS) {
1060                         if (status == 0xc1) /* determined by experiment */
1061                                 priv->wstats.discard.nwid++;
1062                         else
1063                                 priv->stats.rx_errors++;
1064                         goto next;
1065                 }
1066
1067                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1068                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1069
1070                 if (msdu_size < 30) {
1071                         priv->stats.rx_errors++;
1072                         goto next;
1073                 }
1074
1075                 /* Get header as far as end of seq_ctl */
1076                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1077                 frame_ctl = le16_to_cpu(header.frame_ctl);
1078                 seq_control = le16_to_cpu(header.seq_ctl);
1079
1080                 /* probe for CRC use here if needed  once five packets have
1081                    arrived with the same crc status, we assume we know what's
1082                    happening and stop probing */
1083                 if (priv->probe_crc) {
1084                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1085                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1086                         } else {
1087                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1088                         }
1089                         if (priv->do_rx_crc) {
1090                                 if (priv->crc_ok_cnt++ > 5)
1091                                         priv->probe_crc = 0;
1092                         } else {
1093                                 if (priv->crc_ko_cnt++ > 5)
1094                                         priv->probe_crc = 0;
1095                         }
1096                 }
1097
1098                 /* don't CRC header when WEP in use */
1099                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1100                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1101                 }
1102                 msdu_size -= 24; /* header */
1103
1104                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1105                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1106                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1107                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1108
1109                         if (!more_fragments && packet_fragment_no == 0) {
1110                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1111                         } else {
1112                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1113                                              packet_sequence_no, packet_fragment_no, more_fragments);
1114                         }
1115                 }
1116
1117                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1118                         /* copy rest of packet into buffer */
1119                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1120
1121                         /* we use the same buffer for frag reassembly and control packets */
1122                         memset(priv->frag_source, 0xff, 6);
1123
1124                         if (priv->do_rx_crc) {
1125                                 /* last 4 octets is crc */
1126                                 msdu_size -= 4;
1127                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1128                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1129                                         priv->stats.rx_crc_errors++;
1130                                         goto next;
1131                                 }
1132                         }
1133
1134                         atmel_management_frame(priv, &header, msdu_size,
1135                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1136                 }
1137
1138 next:
1139                 /* release descriptor */
1140                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1141
1142                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1143                         priv->rx_desc_head++;
1144                 else
1145                         priv->rx_desc_head = 0;
1146         }
1147 }
1148
1149 static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1150 {
1151         struct net_device *dev = (struct net_device *) dev_id;
1152         struct atmel_private *priv = netdev_priv(dev);
1153         u8 isr;
1154         int i = -1;
1155         static u8 irq_order[] = {
1156                 ISR_OUT_OF_RANGE,
1157                 ISR_RxCOMPLETE,
1158                 ISR_TxCOMPLETE,
1159                 ISR_RxFRAMELOST,
1160                 ISR_FATAL_ERROR,
1161                 ISR_COMMAND_COMPLETE,
1162                 ISR_IBSS_MERGE,
1163                 ISR_GENERIC_IRQ
1164         };
1165
1166         if (priv->card && priv->present_callback &&
1167             !(*priv->present_callback)(priv->card))
1168                 return IRQ_HANDLED;
1169
1170         /* In this state upper-level code assumes it can mess with
1171            the card unhampered by interrupts which may change register state.
1172            Note that even though the card shouldn't generate interrupts
1173            the inturrupt line may be shared. This allows card setup
1174            to go on without disabling interrupts for a long time. */
1175         if (priv->station_state == STATION_STATE_DOWN)
1176                 return IRQ_NONE;
1177
1178         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1179
1180         while (1) {
1181                 if (!atmel_lock_mac(priv)) {
1182                         /* failed to contact card */
1183                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1184                         return IRQ_HANDLED;
1185                 }
1186
1187                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1188                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1189
1190                 if (!isr) {
1191                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1192                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1193                 }
1194
1195                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1196
1197                 for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
1198                         if (isr & irq_order[i])
1199                                 break;
1200
1201                 if (!atmel_lock_mac(priv)) {
1202                         /* failed to contact card */
1203                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1204                         return IRQ_HANDLED;
1205                 }
1206
1207                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1208                 isr ^= irq_order[i];
1209                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1210                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1211
1212                 switch (irq_order[i]) {
1213
1214                 case ISR_OUT_OF_RANGE:
1215                         if (priv->operating_mode == IW_MODE_INFRA &&
1216                             priv->station_state == STATION_STATE_READY) {
1217                                 priv->station_is_associated = 0;
1218                                 atmel_scan(priv, 1);
1219                         }
1220                         break;
1221
1222                 case ISR_RxFRAMELOST:
1223                         priv->wstats.discard.misc++;
1224                         /* fall through */
1225                 case ISR_RxCOMPLETE:
1226                         rx_done_irq(priv);
1227                         break;
1228
1229                 case ISR_TxCOMPLETE:
1230                         tx_done_irq(priv);
1231                         break;
1232
1233                 case ISR_FATAL_ERROR:
1234                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1235                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1236                         break;
1237
1238                 case ISR_COMMAND_COMPLETE:
1239                         atmel_command_irq(priv);
1240                         break;
1241
1242                 case ISR_IBSS_MERGE:
1243                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1244                                       priv->CurrentBSSID, 6);
1245                         /* The WPA stuff cares about the current AP address */
1246                         if (priv->use_wpa)
1247                                 build_wpa_mib(priv);
1248                         break;
1249                 case ISR_GENERIC_IRQ:
1250                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1251                         break;
1252                 }
1253         }
1254 }
1255
1256 static struct net_device_stats *atmel_get_stats(struct net_device *dev)
1257 {
1258         struct atmel_private *priv = netdev_priv(dev);
1259         return &priv->stats;
1260 }
1261
1262 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1263 {
1264         struct atmel_private *priv = netdev_priv(dev);
1265
1266         /* update the link quality here in case we are seeing no beacons
1267            at all to drive the process */
1268         atmel_smooth_qual(priv);
1269
1270         priv->wstats.status = priv->station_state;
1271
1272         if (priv->operating_mode == IW_MODE_INFRA) {
1273                 if (priv->station_state != STATION_STATE_READY) {
1274                         priv->wstats.qual.qual = 0;
1275                         priv->wstats.qual.level = 0;
1276                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1277                                         | IW_QUAL_LEVEL_INVALID);
1278                 }
1279                 priv->wstats.qual.noise = 0;
1280                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1281         } else {
1282                 /* Quality levels cannot be determined in ad-hoc mode,
1283                    because we can 'hear' more that one remote station. */
1284                 priv->wstats.qual.qual = 0;
1285                 priv->wstats.qual.level = 0;
1286                 priv->wstats.qual.noise = 0;
1287                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1288                                         | IW_QUAL_LEVEL_INVALID
1289                                         | IW_QUAL_NOISE_INVALID;
1290                 priv->wstats.miss.beacon = 0;
1291         }
1292
1293         return &priv->wstats;
1294 }
1295
1296 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1297 {
1298         if ((new_mtu < 68) || (new_mtu > 2312))
1299                 return -EINVAL;
1300         dev->mtu = new_mtu;
1301         return 0;
1302 }
1303
1304 static int atmel_set_mac_address(struct net_device *dev, void *p)
1305 {
1306         struct sockaddr *addr = p;
1307
1308         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1309         return atmel_open(dev);
1310 }
1311
1312 EXPORT_SYMBOL(atmel_open);
1313
1314 int atmel_open(struct net_device *dev)
1315 {
1316         struct atmel_private *priv = netdev_priv(dev);
1317         int i, channel;
1318
1319         /* any scheduled timer is no longer needed and might screw things up.. */
1320         del_timer_sync(&priv->management_timer);
1321
1322         /* Interrupts will not touch the card once in this state... */
1323         priv->station_state = STATION_STATE_DOWN;
1324
1325         if (priv->new_SSID_size) {
1326                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1327                 priv->SSID_size = priv->new_SSID_size;
1328                 priv->new_SSID_size = 0;
1329         }
1330         priv->BSS_list_entries = 0;
1331
1332         priv->AuthenticationRequestRetryCnt = 0;
1333         priv->AssociationRequestRetryCnt = 0;
1334         priv->ReAssociationRequestRetryCnt = 0;
1335         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1336         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1337
1338         priv->site_survey_state = SITE_SURVEY_IDLE;
1339         priv->station_is_associated = 0;
1340
1341         if (!reset_atmel_card(dev))
1342                 return -EAGAIN;
1343
1344         if (priv->config_reg_domain) {
1345                 priv->reg_domain = priv->config_reg_domain;
1346                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1347         } else {
1348                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1349                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1350                         if (priv->reg_domain == channel_table[i].reg_domain)
1351                                 break;
1352                 if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
1353                         priv->reg_domain = REG_DOMAIN_MKK1;
1354                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1355                 }
1356         }
1357
1358         if ((channel = atmel_validate_channel(priv, priv->channel)))
1359                 priv->channel = channel;
1360
1361         /* this moves station_state on.... */
1362         atmel_scan(priv, 1);
1363
1364         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1365         return 0;
1366 }
1367
1368 static int atmel_close(struct net_device *dev)
1369 {
1370         struct atmel_private *priv = netdev_priv(dev);
1371
1372         /* Send event to userspace that we are disassociating */
1373         if (priv->station_state == STATION_STATE_READY) {
1374                 union iwreq_data wrqu;
1375
1376                 wrqu.data.length = 0;
1377                 wrqu.data.flags = 0;
1378                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1379                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1380                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1381         }
1382
1383         atmel_enter_state(priv, STATION_STATE_DOWN);
1384
1385         if (priv->bus_type == BUS_TYPE_PCCARD)
1386                 atmel_write16(dev, GCR, 0x0060);
1387         atmel_write16(dev, GCR, 0x0040);
1388         return 0;
1389 }
1390
1391 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1392 {
1393         /* check that channel is OK, if so return zero,
1394            else return suitable default channel */
1395         int i;
1396
1397         for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1398                 if (priv->reg_domain == channel_table[i].reg_domain) {
1399                         if (channel >= channel_table[i].min &&
1400                             channel <= channel_table[i].max)
1401                                 return 0;
1402                         else
1403                                 return channel_table[i].min;
1404                 }
1405         return 0;
1406 }
1407
1408 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1409 {
1410         int i;
1411         char *p = buf;
1412         char *s, *r, *c;
1413
1414         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1415                      DRIVER_MAJOR, DRIVER_MINOR);
1416
1417         if (priv->station_state != STATION_STATE_DOWN) {
1418                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1419                                 "Firmware location:\t",
1420                              priv->host_info.major_version,
1421                              priv->host_info.minor_version,
1422                              priv->host_info.build_version);
1423
1424                 if (priv->card_type != CARD_TYPE_EEPROM)
1425                         p += sprintf(p, "on card\n");
1426                 else if (priv->firmware)
1427                         p += sprintf(p, "%s loaded by host\n",
1428                                      priv->firmware_id);
1429                 else
1430                         p += sprintf(p, "%s loaded by hotplug\n",
1431                                      priv->firmware_id);
1432
1433                 switch (priv->card_type) {
1434                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1435                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1436                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1437                 default: c = "<unknown>";
1438                 }
1439
1440                 r = "<unknown>";
1441                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1442                         if (priv->reg_domain == channel_table[i].reg_domain)
1443                                 r = channel_table[i].name;
1444
1445                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1446                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1447                 p += sprintf(p, "Host CRC checking:\t%s\n",
1448                              priv->do_rx_crc ? "On" : "Off");
1449                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1450                              priv->use_wpa ? "Yes" : "No");
1451         }
1452
1453         switch(priv->station_state) {
1454         case STATION_STATE_SCANNING: s = "Scanning"; break;
1455         case STATION_STATE_JOINNING: s = "Joining"; break;
1456         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1457         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1458         case STATION_STATE_READY: s = "Ready"; break;
1459         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1460         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1461         case STATION_STATE_DOWN: s = "Down"; break;
1462         default: s = "<unknown>";
1463         }
1464
1465         p += sprintf(p, "Current state:\t\t%s\n", s);
1466         return p - buf;
1467 }
1468
1469 static int atmel_read_proc(char *page, char **start, off_t off,
1470                            int count, int *eof, void *data)
1471 {
1472         struct atmel_private *priv = data;
1473         int len = atmel_proc_output (page, priv);
1474         if (len <= off+count) *eof = 1;
1475         *start = page + off;
1476         len -= off;
1477         if (len>count) len = count;
1478         if (len<0) len = 0;
1479         return len;
1480 }
1481
1482 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1483                                    const AtmelFWType fw_type,
1484                                    struct device *sys_dev,
1485                                    int (*card_present)(void *), void *card)
1486 {
1487         struct proc_dir_entry *ent;
1488         struct net_device *dev;
1489         struct atmel_private *priv;
1490         int rc;
1491
1492         /* Create the network device object. */
1493         dev = alloc_etherdev(sizeof(*priv));
1494         if (!dev) {
1495                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1496                 return NULL;
1497         }
1498         if (dev_alloc_name(dev, dev->name) < 0) {
1499                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1500                 goto err_out_free;
1501         }
1502
1503         priv = netdev_priv(dev);
1504         priv->dev = dev;
1505         priv->sys_dev = sys_dev;
1506         priv->present_callback = card_present;
1507         priv->card = card;
1508         priv->firmware = NULL;
1509         priv->firmware_id[0] = '\0';
1510         priv->firmware_type = fw_type;
1511         if (firmware) /* module parameter */
1512                 strcpy(priv->firmware_id, firmware);
1513         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1514         priv->station_state = STATION_STATE_DOWN;
1515         priv->do_rx_crc = 0;
1516         /* For PCMCIA cards, some chips need CRC, some don't
1517            so we have to probe. */
1518         if (priv->bus_type == BUS_TYPE_PCCARD) {
1519                 priv->probe_crc = 1;
1520                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1521         } else
1522                 priv->probe_crc = 0;
1523         memset(&priv->stats, 0, sizeof(priv->stats));
1524         memset(&priv->wstats, 0, sizeof(priv->wstats));
1525         priv->last_qual = jiffies;
1526         priv->last_beacon_timestamp = 0;
1527         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1528         memset(priv->BSSID, 0, 6);
1529         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1530         priv->station_was_associated = 0;
1531
1532         priv->last_survey = jiffies;
1533         priv->preamble = LONG_PREAMBLE;
1534         priv->operating_mode = IW_MODE_INFRA;
1535         priv->connect_to_any_BSS = 0;
1536         priv->config_reg_domain = 0;
1537         priv->reg_domain = 0;
1538         priv->tx_rate = 3;
1539         priv->auto_tx_rate = 1;
1540         priv->channel = 4;
1541         priv->power_mode = 0;
1542         priv->SSID[0] = '\0';
1543         priv->SSID_size = 0;
1544         priv->new_SSID_size = 0;
1545         priv->frag_threshold = 2346;
1546         priv->rts_threshold = 2347;
1547         priv->short_retry = 7;
1548         priv->long_retry = 4;
1549
1550         priv->wep_is_on = 0;
1551         priv->default_key = 0;
1552         priv->encryption_level = 0;
1553         priv->exclude_unencrypted = 0;
1554         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1555         priv->use_wpa = 0;
1556         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1557         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1558
1559         priv->default_beacon_period = priv->beacon_period = 100;
1560         priv->listen_interval = 1;
1561
1562         init_timer(&priv->management_timer);
1563         spin_lock_init(&priv->irqlock);
1564         spin_lock_init(&priv->timerlock);
1565         priv->management_timer.function = atmel_management_timer;
1566         priv->management_timer.data = (unsigned long) dev;
1567
1568         dev->open = atmel_open;
1569         dev->stop = atmel_close;
1570         dev->change_mtu = atmel_change_mtu;
1571         dev->set_mac_address = atmel_set_mac_address;
1572         dev->hard_start_xmit = start_tx;
1573         dev->get_stats = atmel_get_stats;
1574         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1575         dev->do_ioctl = atmel_ioctl;
1576         dev->irq = irq;
1577         dev->base_addr = port;
1578
1579         SET_NETDEV_DEV(dev, sys_dev);
1580
1581         if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
1582                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1583                 goto err_out_free;
1584         }
1585
1586         if (!request_region(dev->base_addr, 32,
1587                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1588                 goto err_out_irq;
1589         }
1590
1591         if (register_netdev(dev))
1592                 goto err_out_res;
1593
1594         if (!probe_atmel_card(dev)){
1595                 unregister_netdev(dev);
1596                 goto err_out_res;
1597         }
1598
1599         netif_carrier_off(dev);
1600
1601         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1602         if (!ent)
1603                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1604
1605         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
1606                dev->name, DRIVER_MAJOR, DRIVER_MINOR,
1607                dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1608                dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
1609
1610         SET_MODULE_OWNER(dev);
1611         return dev;
1612
1613 err_out_res:
1614         release_region( dev->base_addr, 32);
1615 err_out_irq:
1616         free_irq(dev->irq, dev);
1617 err_out_free:
1618         free_netdev(dev);
1619         return NULL;
1620 }
1621
1622 EXPORT_SYMBOL(init_atmel_card);
1623
1624 void stop_atmel_card(struct net_device *dev)
1625 {
1626         struct atmel_private *priv = netdev_priv(dev);
1627
1628         /* put a brick on it... */
1629         if (priv->bus_type == BUS_TYPE_PCCARD)
1630                 atmel_write16(dev, GCR, 0x0060);
1631         atmel_write16(dev, GCR, 0x0040);
1632
1633         del_timer_sync(&priv->management_timer);
1634         unregister_netdev(dev);
1635         remove_proc_entry("driver/atmel", NULL);
1636         free_irq(dev->irq, dev);
1637         kfree(priv->firmware);
1638         release_region(dev->base_addr, 32);
1639         free_netdev(dev);
1640 }
1641
1642 EXPORT_SYMBOL(stop_atmel_card);
1643
1644 static int atmel_set_essid(struct net_device *dev,
1645                            struct iw_request_info *info,
1646                            struct iw_point *dwrq,
1647                            char *extra)
1648 {
1649         struct atmel_private *priv = netdev_priv(dev);
1650
1651         /* Check if we asked for `any' */
1652         if(dwrq->flags == 0) {
1653                 priv->connect_to_any_BSS = 1;
1654         } else {
1655                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1656
1657                 priv->connect_to_any_BSS = 0;
1658
1659                 /* Check the size of the string */
1660                 if (dwrq->length > MAX_SSID_LENGTH + 1)
1661                          return -E2BIG;
1662                 if (index != 0)
1663                         return -EINVAL;
1664
1665                 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1666                 priv->new_SSID_size = dwrq->length - 1;
1667         }
1668
1669         return -EINPROGRESS;
1670 }
1671
1672 static int atmel_get_essid(struct net_device *dev,
1673                            struct iw_request_info *info,
1674                            struct iw_point *dwrq,
1675                            char *extra)
1676 {
1677         struct atmel_private *priv = netdev_priv(dev);
1678
1679         /* Get the current SSID */
1680         if (priv->new_SSID_size != 0) {
1681                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1682                 extra[priv->new_SSID_size] = '\0';
1683                 dwrq->length = priv->new_SSID_size;
1684         } else {
1685                 memcpy(extra, priv->SSID, priv->SSID_size);
1686                 extra[priv->SSID_size] = '\0';
1687                 dwrq->length = priv->SSID_size;
1688         }
1689
1690         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1691
1692         return 0;
1693 }
1694
1695 static int atmel_get_wap(struct net_device *dev,
1696                          struct iw_request_info *info,
1697                          struct sockaddr *awrq,
1698                          char *extra)
1699 {
1700         struct atmel_private *priv = netdev_priv(dev);
1701         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1702         awrq->sa_family = ARPHRD_ETHER;
1703
1704         return 0;
1705 }
1706
1707 static int atmel_set_encode(struct net_device *dev,
1708                             struct iw_request_info *info,
1709                             struct iw_point *dwrq,
1710                             char *extra)
1711 {
1712         struct atmel_private *priv = netdev_priv(dev);
1713
1714         /* Basic checking: do we have a key to set ?
1715          * Note : with the new API, it's impossible to get a NULL pointer.
1716          * Therefore, we need to check a key size == 0 instead.
1717          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1718          * when no key is present (only change flags), but older versions
1719          * don't do it. - Jean II */
1720         if (dwrq->length > 0) {
1721                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1722                 int current_index = priv->default_key;
1723                 /* Check the size of the key */
1724                 if (dwrq->length > 13) {
1725                         return -EINVAL;
1726                 }
1727                 /* Check the index (none -> use current) */
1728                 if (index < 0 || index >= 4)
1729                         index = current_index;
1730                 else
1731                         priv->default_key = index;
1732                 /* Set the length */
1733                 if (dwrq->length > 5)
1734                         priv->wep_key_len[index] = 13;
1735                 else
1736                         if (dwrq->length > 0)
1737                                 priv->wep_key_len[index] = 5;
1738                         else
1739                                 /* Disable the key */
1740                                 priv->wep_key_len[index] = 0;
1741                 /* Check if the key is not marked as invalid */
1742                 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1743                         /* Cleanup */
1744                         memset(priv->wep_keys[index], 0, 13);
1745                         /* Copy the key in the driver */
1746                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1747                 }
1748                 /* WE specify that if a valid key is set, encryption
1749                  * should be enabled (user may turn it off later)
1750                  * This is also how "iwconfig ethX key on" works */
1751                 if (index == current_index &&
1752                     priv->wep_key_len[index] > 0) {
1753                         priv->wep_is_on = 1;
1754                         priv->exclude_unencrypted = 1;
1755                         if (priv->wep_key_len[index] > 5) {
1756                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1757                                 priv->encryption_level = 2;
1758                         } else {
1759                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1760                                 priv->encryption_level = 1;
1761                         }
1762                 }
1763         } else {
1764                 /* Do we want to just set the transmit key index ? */
1765                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1766                 if (index >= 0 && index < 4) {
1767                         priv->default_key = index;
1768                 } else
1769                         /* Don't complain if only change the mode */
1770                         if (!dwrq->flags & IW_ENCODE_MODE) {
1771                                 return -EINVAL;
1772                         }
1773         }
1774         /* Read the flags */
1775         if (dwrq->flags & IW_ENCODE_DISABLED) {
1776                 priv->wep_is_on = 0;
1777                 priv->encryption_level = 0;
1778                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1779         } else {
1780                 priv->wep_is_on = 1;
1781                 if (priv->wep_key_len[priv->default_key] > 5) {
1782                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1783                         priv->encryption_level = 2;
1784                 } else {
1785                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1786                         priv->encryption_level = 1;
1787                 }
1788         }
1789         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1790                 priv->exclude_unencrypted = 1;
1791         if(dwrq->flags & IW_ENCODE_OPEN)
1792                 priv->exclude_unencrypted = 0;
1793
1794         return -EINPROGRESS;            /* Call commit handler */
1795 }
1796
1797 static int atmel_get_encode(struct net_device *dev,
1798                             struct iw_request_info *info,
1799                             struct iw_point *dwrq,
1800                             char *extra)
1801 {
1802         struct atmel_private *priv = netdev_priv(dev);
1803         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1804
1805         if (!priv->wep_is_on)
1806                 dwrq->flags = IW_ENCODE_DISABLED;
1807         else {
1808                 if (priv->exclude_unencrypted)
1809                         dwrq->flags = IW_ENCODE_RESTRICTED;
1810                 else
1811                         dwrq->flags = IW_ENCODE_OPEN;
1812         }
1813                 /* Which key do we want ? -1 -> tx index */
1814         if (index < 0 || index >= 4)
1815                 index = priv->default_key;
1816         dwrq->flags |= index + 1;
1817         /* Copy the key to the user buffer */
1818         dwrq->length = priv->wep_key_len[index];
1819         if (dwrq->length > 16) {
1820                 dwrq->length=0;
1821         } else {
1822                 memset(extra, 0, 16);
1823                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1824         }
1825
1826         return 0;
1827 }
1828
1829 static int atmel_set_encodeext(struct net_device *dev,
1830                             struct iw_request_info *info,
1831                             union iwreq_data *wrqu,
1832                             char *extra)
1833 {
1834         struct atmel_private *priv = netdev_priv(dev);
1835         struct iw_point *encoding = &wrqu->encoding;
1836         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1837         int idx, key_len, alg = ext->alg, set_key = 1;
1838
1839         /* Determine and validate the key index */
1840         idx = encoding->flags & IW_ENCODE_INDEX;
1841         if (idx) {
1842                 if (idx < 1 || idx > WEP_KEYS)
1843                         return -EINVAL;
1844                 idx--;
1845         } else
1846                 idx = priv->default_key;
1847
1848         if (encoding->flags & IW_ENCODE_DISABLED)
1849             alg = IW_ENCODE_ALG_NONE;
1850
1851         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1852                 priv->default_key = idx;
1853                 set_key = ext->key_len > 0 ? 1 : 0;
1854         }
1855
1856         if (set_key) {
1857                 /* Set the requested key first */
1858                 switch (alg) {
1859                 case IW_ENCODE_ALG_NONE:
1860                         priv->wep_is_on = 0;
1861                         priv->encryption_level = 0;
1862                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1863                         break;
1864                 case IW_ENCODE_ALG_WEP:
1865                         if (ext->key_len > 5) {
1866                                 priv->wep_key_len[idx] = 13;
1867                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1868                                 priv->encryption_level = 2;
1869                         } else if (ext->key_len > 0) {
1870                                 priv->wep_key_len[idx] = 5;
1871                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1872                                 priv->encryption_level = 1;
1873                         } else {
1874                                 return -EINVAL;
1875                         }
1876                         priv->wep_is_on = 1;
1877                         memset(priv->wep_keys[idx], 0, 13);
1878                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1879                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1880                         break;
1881                 default:
1882                         return -EINVAL;
1883                 }
1884         }
1885
1886         return -EINPROGRESS;
1887 }
1888
1889 static int atmel_get_encodeext(struct net_device *dev,
1890                             struct iw_request_info *info,
1891                             union iwreq_data *wrqu,
1892                             char *extra)
1893 {
1894         struct atmel_private *priv = netdev_priv(dev);
1895         struct iw_point *encoding = &wrqu->encoding;
1896         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1897         int idx, max_key_len;
1898
1899         max_key_len = encoding->length - sizeof(*ext);
1900         if (max_key_len < 0)
1901                 return -EINVAL;
1902
1903         idx = encoding->flags & IW_ENCODE_INDEX;
1904         if (idx) {
1905                 if (idx < 1 || idx > WEP_KEYS)
1906                         return -EINVAL;
1907                 idx--;
1908         } else
1909                 idx = priv->default_key;
1910
1911         encoding->flags = idx + 1;
1912         memset(ext, 0, sizeof(*ext));
1913
1914         if (!priv->wep_is_on) {
1915                 ext->alg = IW_ENCODE_ALG_NONE;
1916                 ext->key_len = 0;
1917                 encoding->flags |= IW_ENCODE_DISABLED;
1918         } else {
1919                 if (priv->encryption_level > 0)
1920                         ext->alg = IW_ENCODE_ALG_WEP;
1921                 else
1922                         return -EINVAL;
1923
1924                 ext->key_len = priv->wep_key_len[idx];
1925                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1926                 encoding->flags |= IW_ENCODE_ENABLED;
1927         }
1928
1929         return 0;
1930 }
1931
1932 static int atmel_set_auth(struct net_device *dev,
1933                                struct iw_request_info *info,
1934                                union iwreq_data *wrqu, char *extra)
1935 {
1936         struct atmel_private *priv = netdev_priv(dev);
1937         struct iw_param *param = &wrqu->param;
1938
1939         switch (param->flags & IW_AUTH_INDEX) {
1940         case IW_AUTH_WPA_VERSION:
1941         case IW_AUTH_CIPHER_PAIRWISE:
1942         case IW_AUTH_CIPHER_GROUP:
1943         case IW_AUTH_KEY_MGMT:
1944         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1945         case IW_AUTH_PRIVACY_INVOKED:
1946                 /*
1947                  * atmel does not use these parameters
1948                  */
1949                 break;
1950
1951         case IW_AUTH_DROP_UNENCRYPTED:
1952                 priv->exclude_unencrypted = param->value ? 1 : 0;
1953                 break;
1954
1955         case IW_AUTH_80211_AUTH_ALG: {
1956                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1957                                 priv->exclude_unencrypted = 1;
1958                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1959                                 priv->exclude_unencrypted = 0;
1960                         } else
1961                                 return -EINVAL;
1962                         break;
1963                 }
1964
1965         case IW_AUTH_WPA_ENABLED:
1966                 /* Silently accept disable of WPA */
1967                 if (param->value > 0)
1968                         return -EOPNOTSUPP;
1969                 break;
1970
1971         default:
1972                 return -EOPNOTSUPP;
1973         }
1974         return -EINPROGRESS;
1975 }
1976
1977 static int atmel_get_auth(struct net_device *dev,
1978                                struct iw_request_info *info,
1979                                union iwreq_data *wrqu, char *extra)
1980 {
1981         struct atmel_private *priv = netdev_priv(dev);
1982         struct iw_param *param = &wrqu->param;
1983
1984         switch (param->flags & IW_AUTH_INDEX) {
1985         case IW_AUTH_DROP_UNENCRYPTED:
1986                 param->value = priv->exclude_unencrypted;
1987                 break;
1988
1989         case IW_AUTH_80211_AUTH_ALG:
1990                 if (priv->exclude_unencrypted == 1)
1991                         param->value = IW_AUTH_ALG_SHARED_KEY;
1992                 else
1993                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1994                 break;
1995
1996         case IW_AUTH_WPA_ENABLED:
1997                 param->value = 0;
1998                 break;
1999
2000         default:
2001                 return -EOPNOTSUPP;
2002         }
2003         return 0;
2004 }
2005
2006
2007 static int atmel_get_name(struct net_device *dev,
2008                           struct iw_request_info *info,
2009                           char *cwrq,
2010                           char *extra)
2011 {
2012         strcpy(cwrq, "IEEE 802.11-DS");
2013         return 0;
2014 }
2015
2016 static int atmel_set_rate(struct net_device *dev,
2017                           struct iw_request_info *info,
2018                           struct iw_param *vwrq,
2019                           char *extra)
2020 {
2021         struct atmel_private *priv = netdev_priv(dev);
2022
2023         if (vwrq->fixed == 0) {
2024                 priv->tx_rate = 3;
2025                 priv->auto_tx_rate = 1;
2026         } else {
2027                 priv->auto_tx_rate = 0;
2028
2029                 /* Which type of value ? */
2030                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2031                         /* Setting by rate index */
2032                         priv->tx_rate = vwrq->value;
2033                 } else {
2034                 /* Setting by frequency value */
2035                         switch (vwrq->value) {
2036                         case  1000000: priv->tx_rate = 0; break;
2037                         case  2000000: priv->tx_rate = 1; break;
2038                         case  5500000: priv->tx_rate = 2; break;
2039                         case 11000000: priv->tx_rate = 3; break;
2040                         default: return -EINVAL;
2041                         }
2042                 }
2043         }
2044
2045         return -EINPROGRESS;
2046 }
2047
2048 static int atmel_set_mode(struct net_device *dev,
2049                           struct iw_request_info *info,
2050                           __u32 *uwrq,
2051                           char *extra)
2052 {
2053         struct atmel_private *priv = netdev_priv(dev);
2054
2055         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2056                 return -EINVAL;
2057
2058         priv->operating_mode = *uwrq;
2059         return -EINPROGRESS;
2060 }
2061
2062 static int atmel_get_mode(struct net_device *dev,
2063                           struct iw_request_info *info,
2064                           __u32 *uwrq,
2065                           char *extra)
2066 {
2067         struct atmel_private *priv = netdev_priv(dev);
2068
2069         *uwrq = priv->operating_mode;
2070         return 0;
2071 }
2072
2073 static int atmel_get_rate(struct net_device *dev,
2074                          struct iw_request_info *info,
2075                          struct iw_param *vwrq,
2076                          char *extra)
2077 {
2078         struct atmel_private *priv = netdev_priv(dev);
2079
2080         if (priv->auto_tx_rate) {
2081                 vwrq->fixed = 0;
2082                 vwrq->value = 11000000;
2083         } else {
2084                 vwrq->fixed = 1;
2085                 switch(priv->tx_rate) {
2086                 case 0: vwrq->value =  1000000; break;
2087                 case 1: vwrq->value =  2000000; break;
2088                 case 2: vwrq->value =  5500000; break;
2089                 case 3: vwrq->value = 11000000; break;
2090                 }
2091         }
2092         return 0;
2093 }
2094
2095 static int atmel_set_power(struct net_device *dev,
2096                            struct iw_request_info *info,
2097                            struct iw_param *vwrq,
2098                            char *extra)
2099 {
2100         struct atmel_private *priv = netdev_priv(dev);
2101         priv->power_mode = vwrq->disabled ? 0 : 1;
2102         return -EINPROGRESS;
2103 }
2104
2105 static int atmel_get_power(struct net_device *dev,
2106                            struct iw_request_info *info,
2107                            struct iw_param *vwrq,
2108                            char *extra)
2109 {
2110         struct atmel_private *priv = netdev_priv(dev);
2111         vwrq->disabled = priv->power_mode ? 0 : 1;
2112         vwrq->flags = IW_POWER_ON;
2113         return 0;
2114 }
2115
2116 static int atmel_set_retry(struct net_device *dev,
2117                            struct iw_request_info *info,
2118                            struct iw_param *vwrq,
2119                            char *extra)
2120 {
2121         struct atmel_private *priv = netdev_priv(dev);
2122
2123         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2124                 if (vwrq->flags & IW_RETRY_MAX)
2125                         priv->long_retry = vwrq->value;
2126                 else if (vwrq->flags & IW_RETRY_MIN)
2127                         priv->short_retry = vwrq->value;
2128                 else {
2129                         /* No modifier : set both */
2130                         priv->long_retry = vwrq->value;
2131                         priv->short_retry = vwrq->value;
2132                 }
2133                 return -EINPROGRESS;
2134         }
2135
2136         return -EINVAL;
2137 }
2138
2139 static int atmel_get_retry(struct net_device *dev,
2140                            struct iw_request_info *info,
2141                            struct iw_param *vwrq,
2142                            char *extra)
2143 {
2144         struct atmel_private *priv = netdev_priv(dev);
2145
2146         vwrq->disabled = 0;      /* Can't be disabled */
2147
2148         /* Note : by default, display the min retry number */
2149         if (vwrq->flags & IW_RETRY_MAX) {
2150                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
2151                 vwrq->value = priv->long_retry;
2152         } else {
2153                 vwrq->flags = IW_RETRY_LIMIT;
2154                 vwrq->value = priv->short_retry;
2155                 if (priv->long_retry != priv->short_retry)
2156                         vwrq->flags |= IW_RETRY_MIN;
2157         }
2158
2159         return 0;
2160 }
2161
2162 static int atmel_set_rts(struct net_device *dev,
2163                          struct iw_request_info *info,
2164                          struct iw_param *vwrq,
2165                          char *extra)
2166 {
2167         struct atmel_private *priv = netdev_priv(dev);
2168         int rthr = vwrq->value;
2169
2170         if (vwrq->disabled)
2171                 rthr = 2347;
2172         if ((rthr < 0) || (rthr > 2347)) {
2173                 return -EINVAL;
2174         }
2175         priv->rts_threshold = rthr;
2176
2177         return -EINPROGRESS;            /* Call commit handler */
2178 }
2179
2180 static int atmel_get_rts(struct net_device *dev,
2181                          struct iw_request_info *info,
2182                          struct iw_param *vwrq,
2183                          char *extra)
2184 {
2185         struct atmel_private *priv = netdev_priv(dev);
2186
2187         vwrq->value = priv->rts_threshold;
2188         vwrq->disabled = (vwrq->value >= 2347);
2189         vwrq->fixed = 1;
2190
2191         return 0;
2192 }
2193
2194 static int atmel_set_frag(struct net_device *dev,
2195                           struct iw_request_info *info,
2196                           struct iw_param *vwrq,
2197                           char *extra)
2198 {
2199         struct atmel_private *priv = netdev_priv(dev);
2200         int fthr = vwrq->value;
2201
2202         if (vwrq->disabled)
2203                 fthr = 2346;
2204         if ((fthr < 256) || (fthr > 2346)) {
2205                 return -EINVAL;
2206         }
2207         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2208         priv->frag_threshold = fthr;
2209
2210         return -EINPROGRESS;            /* Call commit handler */
2211 }
2212
2213 static int atmel_get_frag(struct net_device *dev,
2214                           struct iw_request_info *info,
2215                           struct iw_param *vwrq,
2216                           char *extra)
2217 {
2218         struct atmel_private *priv = netdev_priv(dev);
2219
2220         vwrq->value = priv->frag_threshold;
2221         vwrq->disabled = (vwrq->value >= 2346);
2222         vwrq->fixed = 1;
2223
2224         return 0;
2225 }
2226
2227 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2228                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2229
2230 static int atmel_set_freq(struct net_device *dev,
2231                           struct iw_request_info *info,
2232                           struct iw_freq *fwrq,
2233                           char *extra)
2234 {
2235         struct atmel_private *priv = netdev_priv(dev);
2236         int rc = -EINPROGRESS;          /* Call commit handler */
2237
2238         /* If setting by frequency, convert to a channel */
2239         if ((fwrq->e == 1) &&
2240             (fwrq->m >= (int) 241200000) &&
2241             (fwrq->m <= (int) 248700000)) {
2242                 int f = fwrq->m / 100000;
2243                 int c = 0;
2244                 while ((c < 14) && (f != frequency_list[c]))
2245                         c++;
2246                 /* Hack to fall through... */
2247                 fwrq->e = 0;
2248                 fwrq->m = c + 1;
2249         }
2250         /* Setting by channel number */
2251         if ((fwrq->m > 1000) || (fwrq->e > 0))
2252                 rc = -EOPNOTSUPP;
2253         else {
2254                 int channel = fwrq->m;
2255                 if (atmel_validate_channel(priv, channel) == 0) {
2256                         priv->channel = channel;
2257                 } else {
2258                         rc = -EINVAL;
2259                 }
2260         }
2261         return rc;
2262 }
2263
2264 static int atmel_get_freq(struct net_device *dev,
2265                           struct iw_request_info *info,
2266                           struct iw_freq *fwrq,
2267                           char *extra)
2268 {
2269         struct atmel_private *priv = netdev_priv(dev);
2270
2271         fwrq->m = priv->channel;
2272         fwrq->e = 0;
2273         return 0;
2274 }
2275
2276 static int atmel_set_scan(struct net_device *dev,
2277                           struct iw_request_info *info,
2278                           struct iw_param *vwrq,
2279                           char *extra)
2280 {
2281         struct atmel_private *priv = netdev_priv(dev);
2282         unsigned long flags;
2283
2284         /* Note : you may have realised that, as this is a SET operation,
2285          * this is privileged and therefore a normal user can't
2286          * perform scanning.
2287          * This is not an error, while the device perform scanning,
2288          * traffic doesn't flow, so it's a perfect DoS...
2289          * Jean II */
2290
2291         if (priv->station_state == STATION_STATE_DOWN)
2292                 return -EAGAIN;
2293
2294         /* Timeout old surveys. */
2295         if ((jiffies - priv->last_survey) > (20 * HZ))
2296                 priv->site_survey_state = SITE_SURVEY_IDLE;
2297         priv->last_survey = jiffies;
2298
2299         /* Initiate a scan command */
2300         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2301                 return -EBUSY;
2302
2303         del_timer_sync(&priv->management_timer);
2304         spin_lock_irqsave(&priv->irqlock, flags);
2305
2306         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2307         priv->fast_scan = 0;
2308         atmel_scan(priv, 0);
2309         spin_unlock_irqrestore(&priv->irqlock, flags);
2310
2311         return 0;
2312 }
2313
2314 static int atmel_get_scan(struct net_device *dev,
2315                           struct iw_request_info *info,
2316                           struct iw_point *dwrq,
2317                           char *extra)
2318 {
2319         struct atmel_private *priv = netdev_priv(dev);
2320         int i;
2321         char *current_ev = extra;
2322         struct iw_event iwe;
2323
2324         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2325                 return -EAGAIN;
2326
2327         for (i = 0; i < priv->BSS_list_entries; i++) {
2328                 iwe.cmd = SIOCGIWAP;
2329                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2330                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2331                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2332
2333                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2334                 if (iwe.u.data.length > 32)
2335                         iwe.u.data.length = 32;
2336                 iwe.cmd = SIOCGIWESSID;
2337                 iwe.u.data.flags = 1;
2338                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2339
2340                 iwe.cmd = SIOCGIWMODE;
2341                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2342                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2343
2344                 iwe.cmd = SIOCGIWFREQ;
2345                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2346                 iwe.u.freq.e = 0;
2347                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2348
2349                 iwe.cmd = SIOCGIWENCODE;
2350                 if (priv->BSSinfo[i].UsingWEP)
2351                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2352                 else
2353                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2354                 iwe.u.data.length = 0;
2355                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2356         }
2357
2358         /* Length of data */
2359         dwrq->length = (current_ev - extra);
2360         dwrq->flags = 0;
2361
2362         return 0;
2363 }
2364
2365 static int atmel_get_range(struct net_device *dev,
2366                            struct iw_request_info *info,
2367                            struct iw_point *dwrq,
2368                            char *extra)
2369 {
2370         struct atmel_private *priv = netdev_priv(dev);
2371         struct iw_range *range = (struct iw_range *) extra;
2372         int k, i, j;
2373
2374         dwrq->length = sizeof(struct iw_range);
2375         memset(range, 0, sizeof(struct iw_range));
2376         range->min_nwid = 0x0000;
2377         range->max_nwid = 0x0000;
2378         range->num_channels = 0;
2379         for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2380                 if (priv->reg_domain == channel_table[j].reg_domain) {
2381                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2382                         break;
2383                 }
2384         if (range->num_channels != 0) {
2385                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2386                         range->freq[k].i = i; /* List index */
2387                         range->freq[k].m = frequency_list[i - 1] * 100000;
2388                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2389                 }
2390                 range->num_frequency = k;
2391         }
2392
2393         range->max_qual.qual = 100;
2394         range->max_qual.level = 100;
2395         range->max_qual.noise = 0;
2396         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2397
2398         range->avg_qual.qual = 50;
2399         range->avg_qual.level = 50;
2400         range->avg_qual.noise = 0;
2401         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2402
2403         range->sensitivity = 0;
2404
2405         range->bitrate[0] =  1000000;
2406         range->bitrate[1] =  2000000;
2407         range->bitrate[2] =  5500000;
2408         range->bitrate[3] = 11000000;
2409         range->num_bitrates = 4;
2410
2411         range->min_rts = 0;
2412         range->max_rts = 2347;
2413         range->min_frag = 256;
2414         range->max_frag = 2346;
2415
2416         range->encoding_size[0] = 5;
2417         range->encoding_size[1] = 13;
2418         range->num_encoding_sizes = 2;
2419         range->max_encoding_tokens = 4;
2420
2421         range->pmp_flags = IW_POWER_ON;
2422         range->pmt_flags = IW_POWER_ON;
2423         range->pm_capa = 0;
2424
2425         range->we_version_source = WIRELESS_EXT;
2426         range->we_version_compiled = WIRELESS_EXT;
2427         range->retry_capa = IW_RETRY_LIMIT ;
2428         range->retry_flags = IW_RETRY_LIMIT;
2429         range->r_time_flags = 0;
2430         range->min_retry = 1;
2431         range->max_retry = 65535;
2432
2433         return 0;
2434 }
2435
2436 static int atmel_set_wap(struct net_device *dev,
2437                          struct iw_request_info *info,
2438                          struct sockaddr *awrq,
2439                          char *extra)
2440 {
2441         struct atmel_private *priv = netdev_priv(dev);
2442         int i;
2443         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2444         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2445         unsigned long flags;
2446
2447         if (awrq->sa_family != ARPHRD_ETHER)
2448                 return -EINVAL;
2449
2450         if (!memcmp(any, awrq->sa_data, 6) ||
2451             !memcmp(off, awrq->sa_data, 6)) {
2452                 del_timer_sync(&priv->management_timer);
2453                 spin_lock_irqsave(&priv->irqlock, flags);
2454                 atmel_scan(priv, 1);
2455                 spin_unlock_irqrestore(&priv->irqlock, flags);
2456                 return 0;
2457         }
2458
2459         for (i = 0; i < priv->BSS_list_entries; i++) {
2460                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2461                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2462                                 return -EINVAL;
2463                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2464                                 return -EINVAL;
2465                         } else {
2466                                 del_timer_sync(&priv->management_timer);
2467                                 spin_lock_irqsave(&priv->irqlock, flags);
2468                                 atmel_join_bss(priv, i);
2469                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2470                                 return 0;
2471                         }
2472                 }
2473         }
2474
2475         return -EINVAL;
2476 }
2477
2478 static int atmel_config_commit(struct net_device *dev,
2479                                struct iw_request_info *info,    /* NULL */
2480                                void *zwrq,                      /* NULL */
2481                                char *extra)                     /* NULL */
2482 {
2483         return atmel_open(dev);
2484 }
2485
2486 static const iw_handler atmel_handler[] =
2487 {
2488         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2489         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2490         (iw_handler) NULL,                      /* SIOCSIWNWID */
2491         (iw_handler) NULL,                      /* SIOCGIWNWID */
2492         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2493         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2494         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2495         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2496         (iw_handler) NULL,                      /* SIOCSIWSENS */
2497         (iw_handler) NULL,                      /* SIOCGIWSENS */
2498         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2499         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2500         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2501         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2502         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2503         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2504         (iw_handler) NULL,                      /* SIOCSIWSPY */
2505         (iw_handler) NULL,                      /* SIOCGIWSPY */
2506         (iw_handler) NULL,                      /* -- hole -- */
2507         (iw_handler) NULL,                      /* -- hole -- */
2508         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2509         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2510         (iw_handler) NULL,                      /* -- hole -- */
2511         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2512         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2513         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2514         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2515         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2516         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2517         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2518         (iw_handler) NULL,                      /* -- hole -- */
2519         (iw_handler) NULL,                      /* -- hole -- */
2520         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2521         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2522         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2523         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2524         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2525         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2526         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2527         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2528         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2529         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2530         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2531         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2532         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2533         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2534         (iw_handler) NULL,                      /* -- hole -- */
2535         (iw_handler) NULL,                      /* -- hole -- */
2536         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2537         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2538         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2539         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2540         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2541         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2542         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2543 };
2544
2545 static const iw_handler atmel_private_handler[] =
2546 {
2547         NULL,                           /* SIOCIWFIRSTPRIV */
2548 };
2549
2550 typedef struct atmel_priv_ioctl {
2551         char id[32];
2552         unsigned char __user *data;
2553         unsigned short len;
2554 } atmel_priv_ioctl;
2555
2556 #define ATMELFWL        SIOCIWFIRSTPRIV
2557 #define ATMELIDIFC      ATMELFWL + 1
2558 #define ATMELRD         ATMELFWL + 2
2559 #define ATMELMAGIC 0x51807
2560 #define REGDOMAINSZ 20
2561
2562 static const struct iw_priv_args atmel_private_args[] = {
2563         {
2564                 .cmd = ATMELFWL,
2565                 .set_args = IW_PRIV_TYPE_BYTE
2566                                 | IW_PRIV_SIZE_FIXED
2567                                 | sizeof (atmel_priv_ioctl),
2568                 .get_args = IW_PRIV_TYPE_NONE,
2569                 .name = "atmelfwl"
2570         }, {
2571                 .cmd = ATMELIDIFC,
2572                 .set_args = IW_PRIV_TYPE_NONE,
2573                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2574                 .name = "atmelidifc"
2575         }, {
2576                 .cmd = ATMELRD,
2577                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2578                 .get_args = IW_PRIV_TYPE_NONE,
2579                 .name = "regdomain"
2580         },
2581 };
2582
2583 static const struct iw_handler_def atmel_handler_def =
2584 {
2585         .num_standard   = sizeof(atmel_handler)/sizeof(iw_handler),
2586         .num_private    = sizeof(atmel_private_handler)/sizeof(iw_handler),
2587         .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
2588         .standard       = (iw_handler *) atmel_handler,
2589         .private        = (iw_handler *) atmel_private_handler,
2590         .private_args   = (struct iw_priv_args *) atmel_private_args,
2591         .get_wireless_stats = atmel_get_wireless_stats
2592 };
2593
2594 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2595 {
2596         int i, rc = 0;
2597         struct atmel_private *priv = netdev_priv(dev);
2598         atmel_priv_ioctl com;
2599         struct iwreq *wrq = (struct iwreq *) rq;
2600         unsigned char *new_firmware;
2601         char domain[REGDOMAINSZ + 1];
2602
2603         switch (cmd) {
2604         case ATMELIDIFC:
2605                 wrq->u.param.value = ATMELMAGIC;
2606                 break;
2607
2608         case ATMELFWL:
2609                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2610                         rc = -EFAULT;
2611                         break;
2612                 }
2613
2614                 if (!capable(CAP_NET_ADMIN)) {
2615                         rc = -EPERM;
2616                         break;
2617                 }
2618
2619                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2620                         rc = -ENOMEM;
2621                         break;
2622                 }
2623
2624                 if (copy_from_user(new_firmware, com.data, com.len)) {
2625                         kfree(new_firmware);
2626                         rc = -EFAULT;
2627                         break;
2628                 }
2629
2630                 kfree(priv->firmware);
2631
2632                 priv->firmware = new_firmware;
2633                 priv->firmware_length = com.len;
2634                 strncpy(priv->firmware_id, com.id, 31);
2635                 priv->firmware_id[31] = '\0';
2636                 break;
2637
2638         case ATMELRD:
2639                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2640                         rc = -EFAULT;
2641                         break;
2642                 }
2643
2644                 if (!capable(CAP_NET_ADMIN)) {
2645                         rc = -EPERM;
2646                         break;
2647                 }
2648
2649                 domain[REGDOMAINSZ] = 0;
2650                 rc = -EINVAL;
2651                 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2652                         /* strcasecmp doesn't exist in the library */
2653                         char *a = channel_table[i].name;
2654                         char *b = domain;
2655                         while (*a) {
2656                                 char c1 = *a++;
2657                                 char c2 = *b++;
2658                                 if (tolower(c1) != tolower(c2))
2659                                         break;
2660                         }
2661                         if (!*a && !*b) {
2662                                 priv->config_reg_domain = channel_table[i].reg_domain;
2663                                 rc = 0;
2664                         }
2665                 }
2666
2667                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2668                         rc = atmel_open(dev);
2669                 break;
2670
2671         default:
2672                 rc = -EOPNOTSUPP;
2673         }
2674
2675         return rc;
2676 }
2677
2678 struct auth_body {
2679         u16 alg;
2680         u16 trans_seq;
2681         u16 status;
2682         u8 el_id;
2683         u8 chall_text_len;
2684         u8 chall_text[253];
2685 };
2686
2687 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2688 {
2689         int old_state = priv->station_state;
2690
2691         if (new_state == old_state)
2692                 return;
2693
2694         priv->station_state = new_state;
2695
2696         if (new_state == STATION_STATE_READY) {
2697                 netif_start_queue(priv->dev);
2698                 netif_carrier_on(priv->dev);
2699         }
2700
2701         if (old_state == STATION_STATE_READY) {
2702                 netif_carrier_off(priv->dev);
2703                 if (netif_running(priv->dev))
2704                         netif_stop_queue(priv->dev);
2705                 priv->last_beacon_timestamp = 0;
2706         }
2707 }
2708
2709 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2710 {
2711         struct {
2712                 u8 BSSID[6];
2713                 u8 SSID[MAX_SSID_LENGTH];
2714                 u8 scan_type;
2715                 u8 channel;
2716                 u16 BSS_type;
2717                 u16 min_channel_time;
2718                 u16 max_channel_time;
2719                 u8 options;
2720                 u8 SSID_size;
2721         } cmd;
2722
2723         memset(cmd.BSSID, 0xff, 6);
2724
2725         if (priv->fast_scan) {
2726                 cmd.SSID_size = priv->SSID_size;
2727                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2728                 cmd.min_channel_time = cpu_to_le16(10);
2729                 cmd.max_channel_time = cpu_to_le16(50);
2730         } else {
2731                 priv->BSS_list_entries = 0;
2732                 cmd.SSID_size = 0;
2733                 cmd.min_channel_time = cpu_to_le16(10);
2734                 cmd.max_channel_time = cpu_to_le16(120);
2735         }
2736
2737         cmd.options = 0;
2738
2739         if (!specific_ssid)
2740                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2741
2742         cmd.channel = (priv->channel & 0x7f);
2743         cmd.scan_type = SCAN_TYPE_ACTIVE;
2744         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2745                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2746
2747         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2748
2749         /* This must come after all hardware access to avoid being messed up
2750            by stuff happening in interrupt context after we leave STATE_DOWN */
2751         atmel_enter_state(priv, STATION_STATE_SCANNING);
2752 }
2753
2754 static void join(struct atmel_private *priv, int type)
2755 {
2756         struct {
2757                 u8 BSSID[6];
2758                 u8 SSID[MAX_SSID_LENGTH];
2759                 u8 BSS_type; /* this is a short in a scan command - weird */
2760                 u8 channel;
2761                 u16 timeout;
2762                 u8 SSID_size;
2763                 u8 reserved;
2764         } cmd;
2765
2766         cmd.SSID_size = priv->SSID_size;
2767         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2768         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2769         cmd.channel = (priv->channel & 0x7f);
2770         cmd.BSS_type = type;
2771         cmd.timeout = cpu_to_le16(2000);
2772
2773         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2774 }
2775
2776 static void start(struct atmel_private *priv, int type)
2777 {
2778         struct {
2779                 u8 BSSID[6];
2780                 u8 SSID[MAX_SSID_LENGTH];
2781                 u8 BSS_type;
2782                 u8 channel;
2783                 u8 SSID_size;
2784                 u8 reserved[3];
2785         } cmd;
2786
2787         cmd.SSID_size = priv->SSID_size;
2788         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2789         memcpy(cmd.BSSID, priv->BSSID, 6);
2790         cmd.BSS_type = type;
2791         cmd.channel = (priv->channel & 0x7f);
2792
2793         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2794 }
2795
2796 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2797                                 u8 channel)
2798 {
2799         int rejoin = 0;
2800         int new = capability & MFIE_TYPE_POWER_CONSTRAINT ?
2801                 SHORT_PREAMBLE : LONG_PREAMBLE;
2802
2803         if (priv->preamble != new) {
2804                 priv->preamble = new;
2805                 rejoin = 1;
2806                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2807         }
2808
2809         if (priv->channel != channel) {
2810                 priv->channel = channel;
2811                 rejoin = 1;
2812                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2813         }
2814
2815         if (rejoin) {
2816                 priv->station_is_associated = 0;
2817                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2818
2819                 if (priv->operating_mode == IW_MODE_INFRA)
2820                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2821                 else
2822                         join(priv, BSS_TYPE_AD_HOC);
2823         }
2824 }
2825
2826 static void send_authentication_request(struct atmel_private *priv, u16 system,
2827                                         u8 *challenge, int challenge_len)
2828 {
2829         struct ieee80211_hdr_4addr header;
2830         struct auth_body auth;
2831
2832         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2833         header.duration_id = cpu_to_le16(0x8000);
2834         header.seq_ctl = 0;
2835         memcpy(header.addr1, priv->CurrentBSSID, 6);
2836         memcpy(header.addr2, priv->dev->dev_addr, 6);
2837         memcpy(header.addr3, priv->CurrentBSSID, 6);
2838
2839         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2840                 /* no WEP for authentication frames with TrSeqNo 1 */
2841                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2842
2843         auth.alg = cpu_to_le16(system);
2844
2845         auth.status = 0;
2846         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2847         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2848         priv->CurrentAuthentTransactionSeqNum += 2;
2849
2850         if (challenge_len != 0) {
2851                 auth.el_id = 16; /* challenge_text */
2852                 auth.chall_text_len = challenge_len;
2853                 memcpy(auth.chall_text, challenge, challenge_len);
2854                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2855         } else {
2856                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2857         }
2858 }
2859
2860 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2861 {
2862         u8 *ssid_el_p;
2863         int bodysize;
2864         struct ieee80211_hdr_4addr header;
2865         struct ass_req_format {
2866                 u16 capability;
2867                 u16 listen_interval;
2868                 u8 ap[6]; /* nothing after here directly accessible */
2869                 u8 ssid_el_id;
2870                 u8 ssid_len;
2871                 u8 ssid[MAX_SSID_LENGTH];
2872                 u8 sup_rates_el_id;
2873                 u8 sup_rates_len;
2874                 u8 rates[4];
2875         } body;
2876
2877         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2878                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2879         header.duration_id = cpu_to_le16(0x8000);
2880         header.seq_ctl = 0;
2881
2882         memcpy(header.addr1, priv->CurrentBSSID, 6);
2883         memcpy(header.addr2, priv->dev->dev_addr, 6);
2884         memcpy(header.addr3, priv->CurrentBSSID, 6);
2885
2886         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2887         if (priv->wep_is_on)
2888                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2889         if (priv->preamble == SHORT_PREAMBLE)
2890                 body.capability |= cpu_to_le16(MFIE_TYPE_POWER_CONSTRAINT);
2891
2892         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2893
2894         /* current AP address - only in reassoc frame */
2895         if (is_reassoc) {
2896                 memcpy(body.ap, priv->CurrentBSSID, 6);
2897                 ssid_el_p = (u8 *)&body.ssid_el_id;
2898                 bodysize = 18 + priv->SSID_size;
2899         } else {
2900                 ssid_el_p = (u8 *)&body.ap[0];
2901                 bodysize = 12 + priv->SSID_size;
2902         }
2903
2904         ssid_el_p[0] = MFIE_TYPE_SSID;
2905         ssid_el_p[1] = priv->SSID_size;
2906         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2907         ssid_el_p[2 + priv->SSID_size] = MFIE_TYPE_RATES;
2908         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2909         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2910
2911         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2912 }
2913
2914 static int is_frame_from_current_bss(struct atmel_private *priv,
2915                                      struct ieee80211_hdr_4addr *header)
2916 {
2917         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2918                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2919         else
2920                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2921 }
2922
2923 static int retrieve_bss(struct atmel_private *priv)
2924 {
2925         int i;
2926         int max_rssi = -128;
2927         int max_index = -1;
2928
2929         if (priv->BSS_list_entries == 0)
2930                 return -1;
2931
2932         if (priv->connect_to_any_BSS) {
2933                 /* Select a BSS with the max-RSSI but of the same type and of
2934                    the same WEP mode and that it is not marked as 'bad' (i.e.
2935                    we had previously failed to connect to this BSS with the
2936                    settings that we currently use) */
2937                 priv->current_BSS = 0;
2938                 for (i = 0; i < priv->BSS_list_entries; i++) {
2939                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2940                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2941                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2942                             !(priv->BSSinfo[i].channel & 0x80)) {
2943                                 max_rssi = priv->BSSinfo[i].RSSI;
2944                                 priv->current_BSS = max_index = i;
2945                         }
2946                 }
2947                 return max_index;
2948         }
2949
2950         for (i = 0; i < priv->BSS_list_entries; i++) {
2951                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2952                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2953                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2954                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2955                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2956                                 max_rssi = priv->BSSinfo[i].RSSI;
2957                                 max_index = i;
2958                         }
2959                 }
2960         }
2961         return max_index;
2962 }
2963
2964 static void store_bss_info(struct atmel_private *priv,
2965                            struct ieee80211_hdr_4addr *header, u16 capability,
2966                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2967                            u8 *ssid, int is_beacon)
2968 {
2969         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2970         int i, index;
2971
2972         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2973                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2974                         index = i;
2975
2976         /* If we process a probe and an entry from this BSS exists
2977            we will update the BSS entry with the info from this BSS.
2978            If we process a beacon we will only update RSSI */
2979
2980         if (index == -1) {
2981                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2982                         return;
2983                 index = priv->BSS_list_entries++;
2984                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2985                 priv->BSSinfo[index].RSSI = rssi;
2986         } else {
2987                 if (rssi > priv->BSSinfo[index].RSSI)
2988                         priv->BSSinfo[index].RSSI = rssi;
2989                 if (is_beacon)
2990                         return;
2991         }
2992
2993         priv->BSSinfo[index].channel = channel;
2994         priv->BSSinfo[index].beacon_period = beacon_period;
2995         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2996         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2997         priv->BSSinfo[index].SSIDsize = ssid_len;
2998
2999         if (capability & WLAN_CAPABILITY_IBSS)
3000                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3001         else if (capability & WLAN_CAPABILITY_ESS)
3002                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
3003
3004         priv->BSSinfo[index].preamble = capability & MFIE_TYPE_POWER_CONSTRAINT ?
3005                 SHORT_PREAMBLE : LONG_PREAMBLE;
3006 }
3007
3008 static void authenticate(struct atmel_private *priv, u16 frame_len)
3009 {
3010         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3011         u16 status = le16_to_cpu(auth->status);
3012         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3013         u16 system = le16_to_cpu(auth->alg);
3014
3015         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3016                 /* no WEP */
3017                 if (priv->station_was_associated) {
3018                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3019                         send_association_request(priv, 1);
3020                         return;
3021                 } else {
3022                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3023                         send_association_request(priv, 0);
3024                         return;
3025                 }
3026         }
3027
3028         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3029                 int should_associate = 0;
3030                 /* WEP */
3031                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3032                         return;
3033
3034                 if (system == WLAN_AUTH_OPEN) {
3035                         if (trans_seq_no == 0x0002) {
3036                                 should_associate = 1;
3037                         }
3038                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3039                         if (trans_seq_no == 0x0002 &&
3040                             auth->el_id == MFIE_TYPE_CHALLENGE) {
3041                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3042                                 return;
3043                         } else if (trans_seq_no == 0x0004) {
3044                                 should_associate = 1;
3045                         }
3046                 }
3047
3048                 if (should_associate) {
3049                         if(priv->station_was_associated) {
3050                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3051                                 send_association_request(priv, 1);
3052                                 return;
3053                         } else {
3054                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3055                                 send_association_request(priv, 0);
3056                                 return;
3057                         }
3058                 }
3059         }
3060
3061         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3062                 /* Do opensystem first, then try sharedkey */
3063                 if (system == WLAN_AUTH_OPEN) {
3064                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3065                         priv->exclude_unencrypted = 1;
3066                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3067                         return;
3068                 } else if (priv->connect_to_any_BSS) {
3069                         int bss_index;
3070
3071                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3072
3073                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3074                                 atmel_join_bss(priv, bss_index);
3075                                 return;
3076                         }
3077                 }
3078         }
3079
3080         priv->AuthenticationRequestRetryCnt = 0;
3081         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3082         priv->station_is_associated = 0;
3083 }
3084
3085 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3086 {
3087         struct ass_resp_format {
3088                 u16 capability;
3089                 u16 status;
3090                 u16 ass_id;
3091                 u8 el_id;
3092                 u8 length;
3093                 u8 rates[4];
3094         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3095
3096         u16 status = le16_to_cpu(ass_resp->status);
3097         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3098         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3099
3100         union iwreq_data wrqu;
3101
3102         if (frame_len < 8 + rates_len)
3103                 return;
3104
3105         if (status == WLAN_STATUS_SUCCESS) {
3106                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3107                         priv->AssociationRequestRetryCnt = 0;
3108                 else
3109                         priv->ReAssociationRequestRetryCnt = 0;
3110
3111                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3112                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3113                 atmel_set_mib(priv, Phy_Mib_Type,
3114                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3115                 if (priv->power_mode == 0) {
3116                         priv->listen_interval = 1;
3117                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3118                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3119                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3120                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3121                 } else {
3122                         priv->listen_interval = 2;
3123                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3124                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3125                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3126                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3127                 }
3128
3129                 priv->station_is_associated = 1;
3130                 priv->station_was_associated = 1;
3131                 atmel_enter_state(priv, STATION_STATE_READY);
3132
3133                 /* Send association event to userspace */
3134                 wrqu.data.length = 0;
3135                 wrqu.data.flags = 0;
3136                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3137                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3138                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3139
3140                 return;
3141         }
3142
3143         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3144             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3145             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3146             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3147                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3148                 priv->AssociationRequestRetryCnt++;
3149                 send_association_request(priv, 0);
3150                 return;
3151         }
3152
3153         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3154             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3155             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3156             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3157                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3158                 priv->ReAssociationRequestRetryCnt++;
3159                 send_association_request(priv, 1);
3160                 return;
3161         }
3162
3163         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3164         priv->station_is_associated = 0;
3165
3166         if (priv->connect_to_any_BSS) {
3167                 int bss_index;
3168                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3169
3170                 if ((bss_index = retrieve_bss(priv)) != -1)
3171                         atmel_join_bss(priv, bss_index);
3172         }
3173 }
3174
3175 void atmel_join_bss(struct atmel_private *priv, int bss_index)
3176 {
3177         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3178
3179         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3180         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3181
3182         /* The WPA stuff cares about the current AP address */
3183         if (priv->use_wpa)
3184                 build_wpa_mib(priv);
3185
3186         /* When switching to AdHoc turn OFF Power Save if needed */
3187
3188         if (bss->BSStype == IW_MODE_ADHOC &&
3189             priv->operating_mode != IW_MODE_ADHOC &&
3190             priv->power_mode) {
3191                 priv->power_mode = 0;
3192                 priv->listen_interval = 1;
3193                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3194                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3195                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3196                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3197         }
3198
3199         priv->operating_mode = bss->BSStype;
3200         priv->channel = bss->channel & 0x7f;
3201         priv->beacon_period = bss->beacon_period;
3202
3203         if (priv->preamble != bss->preamble) {
3204                 priv->preamble = bss->preamble;
3205                 atmel_set_mib8(priv, Local_Mib_Type,
3206                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3207         }
3208
3209         if (!priv->wep_is_on && bss->UsingWEP) {
3210                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3211                 priv->station_is_associated = 0;
3212                 return;
3213         }
3214
3215         if (priv->wep_is_on && !bss->UsingWEP) {
3216                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3217                 priv->station_is_associated = 0;
3218                 return;
3219         }
3220
3221         atmel_enter_state(priv, STATION_STATE_JOINNING);
3222
3223         if (priv->operating_mode == IW_MODE_INFRA)
3224                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3225         else
3226                 join(priv, BSS_TYPE_AD_HOC);
3227 }
3228
3229 static void restart_search(struct atmel_private *priv)
3230 {
3231         int bss_index;
3232
3233         if (!priv->connect_to_any_BSS) {
3234                 atmel_scan(priv, 1);
3235         } else {
3236                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3237
3238                 if ((bss_index = retrieve_bss(priv)) != -1)
3239                         atmel_join_bss(priv, bss_index);
3240                 else
3241                         atmel_scan(priv, 0);
3242         }
3243 }
3244
3245 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3246 {
3247         u8 old = priv->wstats.qual.level;
3248         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3249
3250         switch (priv->firmware_type) {
3251                 case ATMEL_FW_TYPE_502E:
3252                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3253                         break;
3254                 default:
3255                         break;
3256         }
3257
3258         rssi = rssi * 100 / max_rssi;
3259         if ((rssi + old) % 2)
3260                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3261         else
3262                 priv->wstats.qual.level = (rssi + old) / 2;
3263         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3264         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3265 }
3266
3267 static void atmel_smooth_qual(struct atmel_private *priv)
3268 {
3269         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3270         while (time_diff--) {
3271                 priv->last_qual += HZ;
3272                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3273                 priv->wstats.qual.qual +=
3274                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3275                 priv->beacons_this_sec = 0;
3276         }
3277         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3278         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3279 }
3280
3281 /* deals with incoming managment frames. */
3282 static void atmel_management_frame(struct atmel_private *priv,
3283                                    struct ieee80211_hdr_4addr *header,
3284                                    u16 frame_len, u8 rssi)
3285 {
3286         u16 subtype;
3287
3288         subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
3289         switch (subtype) {
3290         case IEEE80211_STYPE_BEACON:
3291         case IEEE80211_STYPE_PROBE_RESP:
3292
3293                 /* beacon frame has multiple variable-length fields -
3294                    never let an engineer loose with a data structure design. */
3295                 {
3296                         struct beacon_format {
3297                                 u64 timestamp;
3298                                 u16 interval;
3299                                 u16 capability;
3300                                 u8 ssid_el_id;
3301                                 u8 ssid_length;
3302                                 /* ssid here */
3303                                 u8 rates_el_id;
3304                                 u8 rates_length;
3305                                 /* rates here */
3306                                 u8 ds_el_id;
3307                                 u8 ds_length;
3308                                 /* ds here */
3309                         } *beacon = (struct beacon_format *)priv->rx_buf;
3310
3311                         u8 channel, rates_length, ssid_length;
3312                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3313                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3314                         u16 capability = le16_to_cpu(beacon->capability);
3315                         u8 *beaconp = priv->rx_buf;
3316                         ssid_length = beacon->ssid_length;
3317                         /* this blows chunks. */
3318                         if (frame_len < 14 || frame_len < ssid_length + 15)
3319                                 return;
3320                         rates_length = beaconp[beacon->ssid_length + 15];
3321                         if (frame_len < ssid_length + rates_length + 18)
3322                                 return;
3323                         if (ssid_length >  MAX_SSID_LENGTH)
3324                                 return;
3325                         channel = beaconp[ssid_length + rates_length + 18];
3326
3327                         if (priv->station_state == STATION_STATE_READY) {
3328                                 smooth_rssi(priv, rssi);
3329                                 if (is_frame_from_current_bss(priv, header)) {
3330                                         priv->beacons_this_sec++;
3331                                         atmel_smooth_qual(priv);
3332                                         if (priv->last_beacon_timestamp) {
3333                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3334                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3335                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3336                                                 if (beacons > 1)
3337                                                         priv->wstats.miss.beacon += beacons - 1;
3338                                         }
3339                                         priv->last_beacon_timestamp = timestamp;
3340                                         handle_beacon_probe(priv, capability, channel);
3341                                 }
3342                         }
3343
3344                         if (priv->station_state == STATION_STATE_SCANNING)
3345                                 store_bss_info(priv, header, capability,
3346                                                beacon_interval, channel, rssi,
3347                                                ssid_length,
3348                                                &beacon->rates_el_id,
3349                                                subtype == IEEE80211_STYPE_BEACON);
3350                 }
3351                 break;
3352
3353         case IEEE80211_STYPE_AUTH:
3354
3355                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3356                         authenticate(priv, frame_len);
3357
3358                 break;
3359
3360         case IEEE80211_STYPE_ASSOC_RESP:
3361         case IEEE80211_STYPE_REASSOC_RESP:
3362
3363                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3364                     priv->station_state == STATION_STATE_REASSOCIATING)
3365                         associate(priv, frame_len, subtype);
3366
3367                 break;
3368
3369         case IEEE80211_STYPE_DISASSOC:
3370                 if (priv->station_is_associated &&
3371                     priv->operating_mode == IW_MODE_INFRA &&
3372                     is_frame_from_current_bss(priv, header)) {
3373                         priv->station_was_associated = 0;
3374                         priv->station_is_associated = 0;
3375
3376                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3377                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3378                 }
3379
3380                 break;
3381
3382         case IEEE80211_STYPE_DEAUTH:
3383                 if (priv->operating_mode == IW_MODE_INFRA &&
3384                     is_frame_from_current_bss(priv, header)) {
3385                         priv->station_was_associated = 0;
3386
3387                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3388                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3389                 }
3390
3391                 break;
3392         }
3393 }
3394
3395 /* run when timer expires */
3396 static void atmel_management_timer(u_long a)
3397 {
3398         struct net_device *dev = (struct net_device *) a;
3399         struct atmel_private *priv = netdev_priv(dev);
3400         unsigned long flags;
3401
3402         /* Check if the card has been yanked. */
3403         if (priv->card && priv->present_callback &&
3404                 !(*priv->present_callback)(priv->card))
3405                 return;
3406
3407         spin_lock_irqsave(&priv->irqlock, flags);
3408
3409         switch (priv->station_state) {
3410
3411         case STATION_STATE_AUTHENTICATING:
3412                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3413                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3414                         priv->station_is_associated = 0;
3415                         priv->AuthenticationRequestRetryCnt = 0;
3416                         restart_search(priv);
3417                 } else {
3418                         int auth = WLAN_AUTH_OPEN;
3419                         priv->AuthenticationRequestRetryCnt++;
3420                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3421                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3422                         if (priv->wep_is_on && priv->exclude_unencrypted)
3423                                 auth = WLAN_AUTH_SHARED_KEY;
3424                         send_authentication_request(priv, auth, NULL, 0);
3425           }
3426           break;
3427
3428         case STATION_STATE_ASSOCIATING:
3429                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3430                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3431                         priv->station_is_associated = 0;
3432                         priv->AssociationRequestRetryCnt = 0;
3433                         restart_search(priv);
3434                 } else {
3435                         priv->AssociationRequestRetryCnt++;
3436                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3437                         send_association_request(priv, 0);
3438                 }
3439           break;
3440
3441         case STATION_STATE_REASSOCIATING:
3442                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3443                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3444                         priv->station_is_associated = 0;
3445                         priv->ReAssociationRequestRetryCnt = 0;
3446                         restart_search(priv);
3447                 } else {
3448                         priv->ReAssociationRequestRetryCnt++;
3449                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3450                         send_association_request(priv, 1);
3451                 }
3452                 break;
3453
3454         default:
3455                 break;
3456         }
3457
3458         spin_unlock_irqrestore(&priv->irqlock, flags);
3459 }
3460
3461 static void atmel_command_irq(struct atmel_private *priv)
3462 {
3463         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3464         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3465         int fast_scan;
3466         union iwreq_data wrqu;
3467
3468         if (status == CMD_STATUS_IDLE ||
3469             status == CMD_STATUS_IN_PROGRESS)
3470                 return;
3471
3472         switch (command){
3473
3474         case CMD_Start:
3475                 if (status == CMD_STATUS_COMPLETE) {
3476                         priv->station_was_associated = priv->station_is_associated;
3477                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3478                                       (u8 *)priv->CurrentBSSID, 6);
3479                         atmel_enter_state(priv, STATION_STATE_READY);
3480                 }
3481                 break;
3482
3483         case CMD_Scan:
3484                 fast_scan = priv->fast_scan;
3485                 priv->fast_scan = 0;
3486
3487                 if (status != CMD_STATUS_COMPLETE) {
3488                         atmel_scan(priv, 1);
3489                 } else {
3490                         int bss_index = retrieve_bss(priv);
3491                         int notify_scan_complete = 1;
3492                         if (bss_index != -1) {
3493                                 atmel_join_bss(priv, bss_index);
3494                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3495                                    priv->SSID_size != 0) {
3496                                 start(priv, BSS_TYPE_AD_HOC);
3497                         } else {
3498                                 priv->fast_scan = !fast_scan;
3499                                 atmel_scan(priv, 1);
3500                                 notify_scan_complete = 0;
3501                         }
3502                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3503                         if (notify_scan_complete) {
3504                                 wrqu.data.length = 0;
3505                                 wrqu.data.flags = 0;
3506                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3507                         }
3508                 }
3509                 break;
3510
3511         case CMD_SiteSurvey:
3512                 priv->fast_scan = 0;
3513
3514                 if (status != CMD_STATUS_COMPLETE)
3515                         return;
3516
3517                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3518                 if (priv->station_is_associated) {
3519                         atmel_enter_state(priv, STATION_STATE_READY);
3520                         wrqu.data.length = 0;
3521                         wrqu.data.flags = 0;
3522                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3523                 } else {
3524                         atmel_scan(priv, 1);
3525                 }
3526                 break;
3527
3528         case CMD_Join:
3529                 if (status == CMD_STATUS_COMPLETE) {
3530                         if (priv->operating_mode == IW_MODE_ADHOC) {
3531                                 priv->station_was_associated = priv->station_is_associated;
3532                                 atmel_enter_state(priv, STATION_STATE_READY);
3533                         } else {
3534                                 int auth = WLAN_AUTH_OPEN;
3535                                 priv->AuthenticationRequestRetryCnt = 0;
3536                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3537
3538                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3539                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3540                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3541                                         auth = WLAN_AUTH_SHARED_KEY;
3542                                 send_authentication_request(priv, auth, NULL, 0);
3543                         }
3544                         return;
3545                 }
3546
3547                 atmel_scan(priv, 1);
3548         }
3549 }
3550
3551 static int atmel_wakeup_firmware(struct atmel_private *priv)
3552 {
3553         struct host_info_struct *iface = &priv->host_info;
3554         u16 mr1, mr3;
3555         int i;
3556
3557         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3558                 atmel_set_gcr(priv->dev, GCR_REMAP);
3559
3560         /* wake up on-board processor */
3561         atmel_clear_gcr(priv->dev, 0x0040);
3562         atmel_write16(priv->dev, BSR, BSS_SRAM);
3563
3564         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3565                 mdelay(100);
3566
3567         /* and wait for it */
3568         for (i = LOOP_RETRY_LIMIT; i; i--) {
3569                 mr1 = atmel_read16(priv->dev, MR1);
3570                 mr3 = atmel_read16(priv->dev, MR3);
3571
3572                 if (mr3 & MAC_BOOT_COMPLETE)
3573                         break;
3574                 if (mr1 & MAC_BOOT_COMPLETE &&
3575                     priv->bus_type == BUS_TYPE_PCCARD)
3576                         break;
3577         }
3578
3579         if (i == 0) {
3580                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3581                 return 0;
3582         }
3583
3584         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3585                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3586                 return 0;
3587         }
3588
3589         /* now check for completion of MAC initialization through
3590            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3591            MAC initialization, check completion status, set interrupt mask,
3592            enables interrupts and calls Tx and Rx initialization functions */
3593
3594         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3595
3596         for (i = LOOP_RETRY_LIMIT; i; i--) {
3597                 mr1 = atmel_read16(priv->dev, MR1);
3598                 mr3 = atmel_read16(priv->dev, MR3);
3599
3600                 if (mr3 & MAC_INIT_COMPLETE)
3601                         break;
3602                 if (mr1 & MAC_INIT_COMPLETE &&
3603                     priv->bus_type == BUS_TYPE_PCCARD)
3604                         break;
3605         }
3606
3607         if (i == 0) {
3608                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3609                                 priv->dev->name);
3610                 return 0;
3611         }
3612
3613         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3614         if ((mr3 & MAC_INIT_COMPLETE) &&
3615             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3616                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3617                 return 0;
3618         }
3619         if ((mr1 & MAC_INIT_COMPLETE) &&
3620             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3621                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3622                 return 0;
3623         }
3624
3625         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3626                            priv->host_info_base, sizeof(*iface));
3627
3628         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3629         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3630         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3631         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3632         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3633         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3634         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3635         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3636         iface->build_version = le16_to_cpu(iface->build_version);
3637         iface->command_pos = le16_to_cpu(iface->command_pos);
3638         iface->major_version = le16_to_cpu(iface->major_version);
3639         iface->minor_version = le16_to_cpu(iface->minor_version);
3640         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3641         iface->mac_status = le16_to_cpu(iface->mac_status);
3642
3643         return 1;
3644 }
3645
3646 /* determine type of memory and MAC address */
3647 static int probe_atmel_card(struct net_device *dev)
3648 {
3649         int rc = 0;
3650         struct atmel_private *priv = netdev_priv(dev);
3651
3652         /* reset pccard */
3653         if (priv->bus_type == BUS_TYPE_PCCARD)
3654                 atmel_write16(dev, GCR, 0x0060);
3655
3656         atmel_write16(dev, GCR, 0x0040);
3657         mdelay(500);
3658
3659         if (atmel_read16(dev, MR2) == 0) {
3660                 /* No stored firmware so load a small stub which just
3661                    tells us the MAC address */
3662                 int i;
3663                 priv->card_type = CARD_TYPE_EEPROM;
3664                 atmel_write16(dev, BSR, BSS_IRAM);
3665                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3666                 atmel_set_gcr(dev, GCR_REMAP);
3667                 atmel_clear_gcr(priv->dev, 0x0040);
3668                 atmel_write16(dev, BSR, BSS_SRAM);
3669                 for (i = LOOP_RETRY_LIMIT; i; i--)
3670                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3671                                 break;
3672                 if (i == 0) {
3673                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3674                 } else {
3675                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3676                         /* got address, now squash it again until the network
3677                            interface is opened */
3678                         if (priv->bus_type == BUS_TYPE_PCCARD)
3679                                 atmel_write16(dev, GCR, 0x0060);
3680                         atmel_write16(dev, GCR, 0x0040);
3681                         rc = 1;
3682                 }
3683         } else if (atmel_read16(dev, MR4) == 0) {
3684                 /* Mac address easy in this case. */
3685                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3686                 atmel_write16(dev,  BSR, 1);
3687                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3688                 atmel_write16(dev,  BSR, 0x200);
3689                 rc = 1;
3690         } else {
3691                 /* Standard firmware in flash, boot it up and ask
3692                    for the Mac Address */
3693                 priv->card_type = CARD_TYPE_SPI_FLASH;
3694                 if (atmel_wakeup_firmware(priv)) {
3695                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3696
3697                         /* got address, now squash it again until the network
3698                            interface is opened */
3699                         if (priv->bus_type == BUS_TYPE_PCCARD)
3700                                 atmel_write16(dev, GCR, 0x0060);
3701                         atmel_write16(dev, GCR, 0x0040);
3702                         rc = 1;
3703                 }
3704         }
3705
3706         if (rc) {
3707                 if (dev->dev_addr[0] == 0xFF) {
3708                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3709                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3710                         memcpy(dev->dev_addr, default_mac, 6);
3711                 }
3712         }
3713
3714         return rc;
3715 }
3716
3717 /* Move the encyption information on the MIB structure.
3718    This routine is for the pre-WPA firmware: later firmware has
3719    a different format MIB and a different routine. */
3720 static void build_wep_mib(struct atmel_private *priv)
3721 {
3722         struct { /* NB this is matched to the hardware, don't change. */
3723                 u8 wep_is_on;
3724                 u8 default_key; /* 0..3 */
3725                 u8 reserved;
3726                 u8 exclude_unencrypted;
3727
3728                 u32 WEPICV_error_count;
3729                 u32 WEP_excluded_count;
3730
3731                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3732                 u8 encryption_level; /* 0, 1, 2 */
3733                 u8 reserved2[3];
3734         } mib;
3735         int i;
3736
3737         mib.wep_is_on = priv->wep_is_on;
3738         if (priv->wep_is_on) {
3739                 if (priv->wep_key_len[priv->default_key] > 5)
3740                         mib.encryption_level = 2;
3741                 else
3742                         mib.encryption_level = 1;
3743         } else {
3744                 mib.encryption_level = 0;
3745         }
3746
3747         mib.default_key = priv->default_key;
3748         mib.exclude_unencrypted = priv->exclude_unencrypted;
3749
3750         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3751                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3752
3753         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3754 }
3755
3756 static void build_wpa_mib(struct atmel_private *priv)
3757 {
3758         /* This is for the later (WPA enabled) firmware. */
3759
3760         struct { /* NB this is matched to the hardware, don't change. */
3761                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3762                 u8 receiver_address[6];
3763                 u8 wep_is_on;
3764                 u8 default_key; /* 0..3 */
3765                 u8 group_key;
3766                 u8 exclude_unencrypted;
3767                 u8 encryption_type;
3768                 u8 reserved;
3769
3770                 u32 WEPICV_error_count;
3771                 u32 WEP_excluded_count;
3772
3773                 u8 key_RSC[4][8];
3774         } mib;
3775
3776         int i;
3777
3778         mib.wep_is_on = priv->wep_is_on;
3779         mib.exclude_unencrypted = priv->exclude_unencrypted;
3780         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3781
3782         /* zero all the keys before adding in valid ones. */
3783         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3784
3785         if (priv->wep_is_on) {
3786                 /* There's a comment in the Atmel code to the effect that this
3787                    is only valid when still using WEP, it may need to be set to
3788                    something to use WPA */
3789                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3790
3791                 mib.default_key = mib.group_key = 255;
3792                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3793                         if (priv->wep_key_len[i] > 0) {
3794                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3795                                 if (i == priv->default_key) {
3796                                         mib.default_key = i;
3797                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3798                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3799                                 } else {
3800                                         mib.group_key = i;
3801                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3802                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3803                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3804                                 }
3805                         }
3806                 }
3807                 if (mib.default_key == 255)
3808                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3809                 if (mib.group_key == 255)
3810                         mib.group_key = mib.default_key;
3811
3812         }
3813
3814         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3815 }
3816
3817 static int reset_atmel_card(struct net_device *dev)
3818 {
3819         /* do everything necessary to wake up the hardware, including
3820            waiting for the lightning strike and throwing the knife switch....
3821
3822            set all the Mib values which matter in the card to match
3823            their settings in the atmel_private structure. Some of these
3824            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3825            can only be changed by tearing down the world and coming back through
3826            here.
3827
3828            This routine is also responsible for initialising some
3829            hardware-specific fields in the atmel_private structure,
3830            including a copy of the firmware's hostinfo stucture
3831            which is the route into the rest of the firmare datastructures. */
3832
3833         struct atmel_private *priv = netdev_priv(dev);
3834         u8 configuration;
3835         int old_state = priv->station_state;
3836
3837         /* data to add to the firmware names, in priority order
3838            this implemenents firmware versioning */
3839
3840         static char *firmware_modifier[] = {
3841                 "-wpa",
3842                 "",
3843                 NULL
3844         };
3845
3846         /* reset pccard */
3847         if (priv->bus_type == BUS_TYPE_PCCARD)
3848                 atmel_write16(priv->dev, GCR, 0x0060);
3849
3850         /* stop card , disable interrupts */
3851         atmel_write16(priv->dev, GCR, 0x0040);
3852
3853         if (priv->card_type == CARD_TYPE_EEPROM) {
3854                 /* copy in firmware if needed */
3855                 const struct firmware *fw_entry = NULL;
3856                 unsigned char *fw;
3857                 int len = priv->firmware_length;
3858                 if (!(fw = priv->firmware)) {
3859                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3860                                 if (strlen(priv->firmware_id) == 0) {
3861                                         printk(KERN_INFO
3862                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3863                                                dev->name);
3864                                         printk(KERN_INFO
3865                                                "%s: if not, use the firmware= module parameter.\n",
3866                                                dev->name);
3867                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3868                                 }
3869                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3870                                         printk(KERN_ALERT
3871                                                "%s: firmware %s is missing, cannot continue.\n",
3872                                                dev->name, priv->firmware_id);
3873                                         return 0;
3874                                 }
3875                         } else {
3876                                 int fw_index = 0;
3877                                 int success = 0;
3878
3879                                 /* get firmware filename entry based on firmware type ID */
3880                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3881                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3882                                         fw_index++;
3883
3884                                 /* construct the actual firmware file name */
3885                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3886                                         int i;
3887                                         for (i = 0; firmware_modifier[i]; i++) {
3888                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3889                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3890                                                 priv->firmware_id[31] = '\0';
3891                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3892                                                         success = 1;
3893                                                         break;
3894                                                 }
3895                                         }
3896                                 }
3897                                 if (!success) {
3898                                         printk(KERN_ALERT
3899                                                "%s: firmware %s is missing, cannot start.\n",
3900                                                dev->name, priv->firmware_id);
3901                                         priv->firmware_id[0] = '\0';
3902                                         return 0;
3903                                 }
3904                         }
3905
3906                         fw = fw_entry->data;
3907                         len = fw_entry->size;
3908                 }
3909
3910                 if (len <= 0x6000) {
3911                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3912                         atmel_copy_to_card(priv->dev, 0, fw, len);
3913                         atmel_set_gcr(priv->dev, GCR_REMAP);
3914                 } else {
3915                         /* Remap */
3916                         atmel_set_gcr(priv->dev, GCR_REMAP);
3917                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3918                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3919                         atmel_write16(priv->dev, BSR, 0x2ff);
3920                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3921                 }
3922
3923                 if (fw_entry)
3924                         release_firmware(fw_entry);
3925         }
3926
3927         if (!atmel_wakeup_firmware(priv))
3928                 return 0;
3929
3930         /* Check the version and set the correct flag for wpa stuff,
3931            old and new firmware is incompatible.
3932            The pre-wpa 3com firmware reports major version 5,
3933            the wpa 3com firmware is major version 4 and doesn't need
3934            the 3com broken-ness filter. */
3935         priv->use_wpa = (priv->host_info.major_version == 4);
3936         priv->radio_on_broken = (priv->host_info.major_version == 5);
3937
3938         /* unmask all irq sources */
3939         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3940
3941         /* int Tx system and enable Tx */
3942         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3943         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3944         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3945         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3946
3947         priv->tx_desc_free = priv->host_info.tx_desc_count;
3948         priv->tx_desc_head = 0;
3949         priv->tx_desc_tail = 0;
3950         priv->tx_desc_previous = 0;
3951         priv->tx_free_mem = priv->host_info.tx_buff_size;
3952         priv->tx_buff_head = 0;
3953         priv->tx_buff_tail = 0;
3954
3955         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3956         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3957                                    configuration | FUNC_CTRL_TxENABLE);
3958
3959         /* init Rx system and enable */
3960         priv->rx_desc_head = 0;
3961
3962         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3963         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3964                                    configuration | FUNC_CTRL_RxENABLE);
3965
3966         if (!priv->radio_on_broken) {
3967                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3968                     CMD_STATUS_REJECTED_RADIO_OFF) {
3969                         printk(KERN_INFO
3970                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3971                                dev->name);
3972                         return 0;
3973                 }
3974         }
3975
3976         /* set up enough MIB values to run. */
3977         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3978         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3979         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3980         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3981         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3982         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3983         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3984         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3985                       priv->dev->dev_addr, 6);
3986         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3987         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3988         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3989         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3990         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3991         if (priv->use_wpa)
3992                 build_wpa_mib(priv);
3993         else
3994                 build_wep_mib(priv);
3995
3996         if (old_state == STATION_STATE_READY)
3997         {
3998                 union iwreq_data wrqu;
3999
4000                 wrqu.data.length = 0;
4001                 wrqu.data.flags = 0;
4002                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4003                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4004                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4005         }
4006
4007         return 1;
4008 }
4009
4010 static void atmel_send_command(struct atmel_private *priv, int command,
4011                                void *cmd, int cmd_size)
4012 {
4013         if (cmd)
4014                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4015                                    cmd, cmd_size);
4016
4017         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4018         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4019 }
4020
4021 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4022                                    void *cmd, int cmd_size)
4023 {
4024         int i, status;
4025
4026         atmel_send_command(priv, command, cmd, cmd_size);
4027
4028         for (i = 5000; i; i--) {
4029                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4030                 if (status != CMD_STATUS_IDLE &&
4031                     status != CMD_STATUS_IN_PROGRESS)
4032                         break;
4033                 udelay(20);
4034         }
4035
4036         if (i == 0) {
4037                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4038                 status =  CMD_STATUS_HOST_ERROR;
4039         } else {
4040                 if (command != CMD_EnableRadio)
4041                         status = CMD_STATUS_COMPLETE;
4042         }
4043
4044         return status;
4045 }
4046
4047 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4048 {
4049         struct get_set_mib m;
4050         m.type = type;
4051         m.size = 1;
4052         m.index = index;
4053
4054         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4055         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4056 }
4057
4058 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4059 {
4060         struct get_set_mib m;
4061         m.type = type;
4062         m.size = 1;
4063         m.index = index;
4064         m.data[0] = data;
4065
4066         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4067 }
4068
4069 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4070                             u16 data)
4071 {
4072         struct get_set_mib m;
4073         m.type = type;
4074         m.size = 2;
4075         m.index = index;
4076         m.data[0] = data;
4077         m.data[1] = data >> 8;
4078
4079         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4080 }
4081
4082 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4083                           u8 *data, int data_len)
4084 {
4085         struct get_set_mib m;
4086         m.type = type;
4087         m.size = data_len;
4088         m.index = index;
4089
4090         if (data_len > MIB_MAX_DATA_BYTES)
4091                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4092
4093         memcpy(m.data, data, data_len);
4094         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4095 }
4096
4097 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4098                           u8 *data, int data_len)
4099 {
4100         struct get_set_mib m;
4101         m.type = type;
4102         m.size = data_len;
4103         m.index = index;
4104
4105         if (data_len > MIB_MAX_DATA_BYTES)
4106                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4107
4108         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4109         atmel_copy_to_host(priv->dev, data,
4110                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4111 }
4112
4113 static void atmel_writeAR(struct net_device *dev, u16 data)
4114 {
4115         int i;
4116         outw(data, dev->base_addr + AR);
4117         /* Address register appears to need some convincing..... */
4118         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4119                 outw(data, dev->base_addr + AR);
4120 }
4121
4122 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4123                                unsigned char *src, u16 len)
4124 {
4125         int i;
4126         atmel_writeAR(dev, dest);
4127         if (dest % 2) {
4128                 atmel_write8(dev, DR, *src);
4129                 src++; len--;
4130         }
4131         for (i = len; i > 1 ; i -= 2) {
4132                 u8 lb = *src++;
4133                 u8 hb = *src++;
4134                 atmel_write16(dev, DR, lb | (hb << 8));
4135         }
4136         if (i)
4137                 atmel_write8(dev, DR, *src);
4138 }
4139
4140 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4141                                u16 src, u16 len)
4142 {
4143         int i;
4144         atmel_writeAR(dev, src);
4145         if (src % 2) {
4146                 *dest = atmel_read8(dev, DR);
4147                 dest++; len--;
4148         }
4149         for (i = len; i > 1 ; i -= 2) {
4150                 u16 hw = atmel_read16(dev, DR);
4151                 *dest++ = hw;
4152                 *dest++ = hw >> 8;
4153         }
4154         if (i)
4155                 *dest = atmel_read8(dev, DR);
4156 }
4157
4158 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4159 {
4160         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4161 }
4162
4163 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4164 {
4165         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4166 }
4167
4168 static int atmel_lock_mac(struct atmel_private *priv)
4169 {
4170         int i, j = 20;
4171  retry:
4172         for (i = 5000; i; i--) {
4173                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4174                         break;
4175                 udelay(20);
4176         }
4177
4178         if (!i)
4179                 return 0; /* timed out */
4180
4181         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4182         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4183                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4184                 if (!j--)
4185                         return 0; /* timed out */
4186                 goto retry;
4187         }
4188
4189         return 1;
4190 }
4191
4192 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4193 {
4194         atmel_writeAR(priv->dev, pos);
4195         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4196         atmel_write16(priv->dev, DR, data >> 16);
4197 }
4198
4199 /***************************************************************************/
4200 /* There follows the source form of the MAC address reading firmware       */
4201 /***************************************************************************/
4202 #if 0
4203
4204 /* Copyright 2003 Matthew T. Russotto                                      */
4205 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4206 /* included in "atmel wireless lan drivers" package                        */
4207 /**
4208     This file is part of net.russotto.AtmelMACFW, hereto referred to
4209     as AtmelMACFW
4210
4211     AtmelMACFW is free software; you can redistribute it and/or modify
4212     it under the terms of the GNU General Public License version 2
4213     as published by the Free Software Foundation.
4214
4215     AtmelMACFW is distributed in the hope that it will be useful,
4216     but WITHOUT ANY WARRANTY; without even the implied warranty of
4217     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4218     GNU General Public License for more details.
4219
4220     You should have received a copy of the GNU General Public License
4221     along with AtmelMACFW; if not, write to the Free Software
4222     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4223
4224 ****************************************************************************/
4225 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4226 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4227 /* It only works on SPI EEPROM versions of the card.                       */
4228
4229 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4230 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4231 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4232 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4233 /* MR4, for investigational purposes (maybe we can determine chip type     */
4234 /* from that?)                                                             */
4235
4236         .org 0
4237     .set MRBASE, 0x8000000
4238         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4239         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4240         .set SRAM_BASE,  0x02000000
4241         .set SP_BASE,    0x0F300000
4242         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4243         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4244         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4245         .set STACK_BASE, 0x5600
4246         .set SP_SR, 0x10
4247         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4248         .set SP_RDRF, 1 /* status register bit -- RDR full */
4249         .set SP_SWRST, 0x80
4250         .set SP_SPIEN, 0x1
4251         .set SP_CR, 0   /* control register */
4252         .set SP_MR, 4   /* mode register */
4253         .set SP_RDR, 0x08 /* Read Data Register */
4254         .set SP_TDR, 0x0C /* Transmit Data Register */
4255         .set SP_CSR0, 0x30 /* chip select registers */
4256         .set SP_CSR1, 0x34
4257         .set SP_CSR2, 0x38
4258         .set SP_CSR3, 0x3C
4259         .set NVRAM_CMD_RDSR, 5 /* read status register */
4260         .set NVRAM_CMD_READ, 3 /* read data */
4261         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4262         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4263                                   serial output, since SO is normally high.  But it
4264                                   does cause 8 clock cycles and thus 8 bits to be
4265                                   clocked in to the chip.  See Atmel's SPI
4266                                   controller (e.g. AT91M55800) timing and 4K
4267                                   SPI EEPROM manuals */
4268
4269         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4270         .set NVRAM_IMAGE, 0x02000200
4271         .set NVRAM_LENGTH, 0x0200
4272         .set MAC_ADDRESS_MIB, SRAM_BASE
4273         .set MAC_ADDRESS_LENGTH, 6
4274         .set MAC_BOOT_FLAG, 0x10
4275         .set MR1, 0
4276         .set MR2, 4
4277         .set MR3, 8
4278         .set MR4, 0xC
4279 RESET_VECTOR:
4280         b RESET_HANDLER
4281 UNDEF_VECTOR:
4282         b HALT1
4283 SWI_VECTOR:
4284         b HALT1
4285 IABORT_VECTOR:
4286         b HALT1
4287 DABORT_VECTOR:
4288 RESERVED_VECTOR:
4289         b HALT1
4290 IRQ_VECTOR:
4291         b HALT1
4292 FIQ_VECTOR:
4293         b HALT1
4294 HALT1:  b HALT1
4295 RESET_HANDLER:
4296         mov     r0, #CPSR_INITIAL
4297         msr     CPSR_c, r0      /* This is probably unnecessary */
4298
4299 /* I'm guessing this is initializing clock generator electronics for SPI */
4300         ldr     r0, =SPI_CGEN_BASE
4301         mov     r1, #0
4302         mov     r1, r1, lsl #3
4303         orr     r1,r1, #0
4304         str     r1, [r0]
4305         ldr     r1, [r0, #28]
4306         bic     r1, r1, #16
4307         str     r1, [r0, #28]
4308         mov     r1, #1
4309         str     r1, [r0, #8]
4310
4311         ldr     r0, =MRBASE
4312         mov     r1, #0
4313         strh    r1, [r0, #MR1]
4314         strh    r1, [r0, #MR2]
4315         strh    r1, [r0, #MR3]
4316         strh    r1, [r0, #MR4]
4317
4318         mov     sp, #STACK_BASE
4319         bl      SP_INIT
4320         mov     r0, #10
4321         bl      DELAY9
4322         bl      GET_MAC_ADDR
4323         bl      GET_WHOLE_NVRAM
4324         ldr     r0, =MRBASE
4325         ldr     r1, =MAC_ADDRESS_MIB
4326         strh    r1, [r0, #MR2]
4327         ldr     r1, =NVRAM_IMAGE
4328         strh    r1, [r0, #MR4]
4329         mov     r1, #MAC_BOOT_FLAG
4330         strh    r1, [r0, #MR3]
4331 HALT2:  b HALT2
4332 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4333 GET_WHOLE_NVRAM:
4334         stmdb   sp!, {lr}
4335         mov     r2, #0 /* 0th bytes of NVRAM */
4336         mov     r3, #NVRAM_LENGTH
4337         mov     r1, #0          /* not used in routine */
4338         ldr     r0, =NVRAM_IMAGE
4339         bl      NVRAM_XFER
4340         ldmia   sp!, {lr}
4341         bx      lr
4342 .endfunc
4343
4344 .func Get_MAC_Addr, GET_MAC_ADDR
4345 GET_MAC_ADDR:
4346         stmdb   sp!, {lr}
4347         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4348         mov     r3, #MAC_ADDRESS_LENGTH
4349         mov     r1, #0          /* not used in routine */
4350         ldr     r0, =MAC_ADDRESS_MIB
4351         bl      NVRAM_XFER
4352         ldmia   sp!, {lr}
4353         bx      lr
4354 .endfunc
4355 .ltorg
4356 .func Delay9, DELAY9
4357 DELAY9:
4358         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4359 DELAYLOOP:
4360         beq     DELAY9_done
4361         subs    r0, r0, #1
4362         b       DELAYLOOP
4363 DELAY9_done:
4364         bx      lr
4365 .endfunc
4366
4367 .func SP_Init, SP_INIT
4368 SP_INIT:
4369         mov     r1, #SP_SWRST
4370         ldr     r0, =SP_BASE
4371         str     r1, [r0, #SP_CR] /* reset the SPI */
4372         mov     r1, #0
4373         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4374         mov     r1, #SP_SPIEN
4375         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4376         str     r1, [r0, #SP_CR] /* enable the SPI */
4377
4378 /*  My guess would be this turns on the SPI clock */
4379         ldr     r3, =SPI_CGEN_BASE
4380         ldr     r1, [r3, #28]
4381         orr     r1, r1, #0x2000
4382         str     r1, [r3, #28]
4383
4384         ldr     r1, =0x2000c01
4385         str     r1, [r0, #SP_CSR0]
4386         ldr     r1, =0x2000201
4387         str     r1, [r0, #SP_CSR1]
4388         str     r1, [r0, #SP_CSR2]
4389         str     r1, [r0, #SP_CSR3]
4390         ldr     r1, [r0, #SP_SR]
4391         ldr     r0, [r0, #SP_RDR]
4392         bx      lr
4393 .endfunc
4394 .func NVRAM_Init, NVRAM_INIT
4395 NVRAM_INIT:
4396         ldr     r1, =SP_BASE
4397         ldr     r0, [r1, #SP_RDR]
4398         mov     r0, #NVRAM_CMD_RDSR
4399         str     r0, [r1, #SP_TDR]
4400 SP_loop1:
4401         ldr     r0, [r1, #SP_SR]
4402         tst     r0, #SP_TDRE
4403         beq     SP_loop1
4404
4405         mov     r0, #SPI_8CLOCKS
4406         str     r0, [r1, #SP_TDR]
4407 SP_loop2:
4408         ldr     r0, [r1, #SP_SR]
4409         tst     r0, #SP_TDRE
4410         beq     SP_loop2
4411
4412         ldr     r0, [r1, #SP_RDR]
4413 SP_loop3:
4414         ldr     r0, [r1, #SP_SR]
4415         tst     r0, #SP_RDRF
4416         beq     SP_loop3
4417
4418         ldr     r0, [r1, #SP_RDR]
4419         and     r0, r0, #255
4420         bx      lr
4421 .endfunc
4422
4423 .func NVRAM_Xfer, NVRAM_XFER
4424         /* r0 = dest address */
4425         /* r1 = not used */
4426         /* r2 = src address within NVRAM */
4427         /* r3 = length */
4428 NVRAM_XFER:
4429         stmdb   sp!, {r4, r5, lr}
4430         mov     r5, r0          /* save r0 (dest address) */
4431         mov     r4, r3          /* save r3 (length) */
4432         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4433         and     r0, r0, #8
4434         add     r0, r0, #NVRAM_CMD_READ
4435         ldr     r1, =NVRAM_SCRATCH
4436         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4437         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4438 _local1:
4439         bl      NVRAM_INIT
4440         tst     r0, #NVRAM_SR_RDY
4441         bne     _local1
4442         mov     r0, #20
4443         bl      DELAY9
4444         mov     r2, r4          /* length */
4445         mov     r1, r5          /* dest address */
4446         mov     r0, #2          /* bytes to transfer in command */
4447         bl      NVRAM_XFER2
4448         ldmia   sp!, {r4, r5, lr}
4449         bx      lr
4450 .endfunc
4451
4452 .func NVRAM_Xfer2, NVRAM_XFER2
4453 NVRAM_XFER2:
4454         stmdb   sp!, {r4, r5, r6, lr}
4455         ldr     r4, =SP_BASE
4456         mov     r3, #0
4457         cmp     r0, #0
4458         bls     _local2
4459         ldr     r5, =NVRAM_SCRATCH
4460 _local4:
4461         ldrb    r6, [r5, r3]
4462         str     r6, [r4, #SP_TDR]
4463 _local3:
4464         ldr     r6, [r4, #SP_SR]
4465         tst     r6, #SP_TDRE
4466         beq     _local3
4467         add     r3, r3, #1
4468         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4469         blo     _local4
4470 _local2:
4471         mov     r3, #SPI_8CLOCKS
4472         str     r3, [r4, #SP_TDR]
4473         ldr     r0, [r4, #SP_RDR]
4474 _local5:
4475         ldr     r0, [r4, #SP_SR]
4476         tst     r0, #SP_RDRF
4477         beq     _local5
4478         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 */
4479         mov     r0, #0
4480         cmp     r2, #0  /* r2 is # of bytes to copy in */
4481         bls     _local6
4482 _local7:
4483         ldr     r5, [r4, #SP_SR]
4484         tst     r5, #SP_TDRE
4485         beq     _local7
4486         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4487 _local8:
4488         ldr     r5, [r4, #SP_SR]
4489         tst     r5, #SP_RDRF
4490         beq     _local8
4491         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4492         strb    r5, [r1], #1 /* postindexed */
4493         add     r0, r0, #1
4494         cmp     r0, r2
4495         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4496 _local6:
4497         mov     r0, #200
4498         bl      DELAY9
4499         ldmia   sp!, {r4, r5, r6, lr}
4500         bx      lr
4501 #endif