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/init.h>
  43
  44 #include <linux/kernel.h>
  45 #include <linux/ptrace.h>
  46 #include <linux/slab.h>
  47 #include <linux/string.h>
  48 #include <linux/ctype.h>
  49 #include <linux/timer.h>
  50 #include <asm/byteorder.h>
  51 #include <asm/io.h>
  52 #include <asm/system.h>
  53 #include <asm/uaccess.h>
  54 #include <linux/module.h>
  55 #include <linux/netdevice.h>
  56 #include <linux/etherdevice.h>
  57 #include <linux/skbuff.h>
  58 #include <linux/if_arp.h>
  59 #include <linux/ioport.h>
  60 #include <linux/fcntl.h>
  61 #include <linux/delay.h>
  62 #include <linux/wireless.h>
  63 #include <net/iw_handler.h>
  64 #include <linux/crc32.h>
  65 #include <linux/proc_fs.h>
  66 #include <linux/device.h>
  67 #include <linux/moduleparam.h>
  68 #include <linux/firmware.h>
  69 #include <linux/jiffies.h>
  70 #include <net/ieee80211.h>
  71 #include "atmel.h"
  72
  73 #define DRIVER_MAJOR 0
  74 #define DRIVER_MINOR 98
  75
  76 MODULE_AUTHOR("Simon Kelley");
  77 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  78 MODULE_LICENSE("GPL");
  79 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  80
  81 /* The name of the firmware file to be loaded
  82    over-rides any automatic selection */
  83 static char *firmware = NULL;
  84 module_param(firmware, charp, 0);
  85
  86 /* table of firmware file names */
  87 static struct {
  88         AtmelFWType fw_type;
  89         const char *fw_file;
  90         const char *fw_file_ext;
  91 } fw_table[] = {
  92         { ATMEL_FW_TYPE_502,      "atmel_at76c502",      "bin" },
  93         { ATMEL_FW_TYPE_502D,     "atmel_at76c502d",     "bin" },
  94         { ATMEL_FW_TYPE_502E,     "atmel_at76c502e",     "bin" },
  95         { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
  96         { ATMEL_FW_TYPE_504,      "atmel_at76c504",      "bin" },
  97         { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
  98         { ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
  99         { ATMEL_FW_TYPE_506,      "atmel_at76c506",      "bin" },
 100         { ATMEL_FW_TYPE_NONE,      NULL,                  NULL }
 101 };
 102
 103 #define MAX_SSID_LENGTH 32
 104 #define MGMT_JIFFIES (256 * HZ / 100)
 105
 106 #define MAX_BSS_ENTRIES 64
 107
 108 /* registers */
 109 #define GCR  0x00    //      (SIR0)  General Configuration Register
 110 #define BSR  0x02    //      (SIR1)  Bank Switching Select Register
 111 #define AR   0x04
 112 #define DR   0x08
 113 #define MR1  0x12    //      Mirror Register 1
 114 #define MR2  0x14    //      Mirror Register 2
 115 #define MR3  0x16    //      Mirror Register 3
 116 #define MR4  0x18    //      Mirror Register 4
 117
 118 #define GPR1                            0x0c
 119 #define GPR2                            0x0e
 120 #define GPR3                            0x10
 121 //
 122 // Constants for the GCR register.
 123 //
 124 #define GCR_REMAP     0x0400          // Remap internal SRAM to 0
 125 #define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset)
 126 #define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
 127 #define GCR_ENINT     0x0002          // Enable Interrupts
 128 #define GCR_ACKINT    0x0008          // Acknowledge Interrupts
 129
 130 #define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
 131 #define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
 132 //
 133 // Constants for the MR registers.
 134 //
 135 #define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
 136 #define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
 137 #define MAC_INIT_OK             0x0002        // MAC boot has been completed
 138
 139 #define MIB_MAX_DATA_BYTES    212
 140 #define MIB_HEADER_SIZE       4    /* first four fields */
 141
 142 struct get_set_mib {
 143         u8 type;
 144         u8 size;
 145         u8 index;
 146         u8 reserved;
 147         u8 data[MIB_MAX_DATA_BYTES];
 148 };
 149
 150 struct rx_desc {
 151         u32          Next;
 152         u16          MsduPos;
 153         u16          MsduSize;
 154
 155         u8           State;
 156         u8           Status;
 157         u8           Rate;
 158         u8           Rssi;
 159         u8           LinkQuality;
 160         u8           PreambleType;
 161         u16          Duration;
 162         u32          RxTime;
 163 };
 164
 165 #define RX_DESC_FLAG_VALID       0x80
 166 #define RX_DESC_FLAG_CONSUMED    0x40
 167 #define RX_DESC_FLAG_IDLE        0x00
 168
 169 #define RX_STATUS_SUCCESS        0x00
 170
 171 #define RX_DESC_MSDU_POS_OFFSET      4
 172 #define RX_DESC_MSDU_SIZE_OFFSET     6
 173 #define RX_DESC_FLAGS_OFFSET         8
 174 #define RX_DESC_STATUS_OFFSET        9
 175 #define RX_DESC_RSSI_OFFSET          11
 176 #define RX_DESC_LINK_QUALITY_OFFSET  12
 177 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 178 #define RX_DESC_DURATION_OFFSET      14
 179 #define RX_DESC_RX_TIME_OFFSET       16
 180
 181 struct tx_desc {
 182         u32       NextDescriptor;
 183         u16       TxStartOfFrame;
 184         u16       TxLength;
 185
 186         u8        TxState;
 187         u8        TxStatus;
 188         u8        RetryCount;
 189
 190         u8        TxRate;
 191
 192         u8        KeyIndex;
 193         u8        ChiperType;
 194         u8        ChipreLength;
 195         u8        Reserved1;
 196
 197         u8        Reserved;
 198         u8        PacketType;
 199         u16       HostTxLength;
 200 };
 201
 202 #define TX_DESC_NEXT_OFFSET          0
 203 #define TX_DESC_POS_OFFSET           4
 204 #define TX_DESC_SIZE_OFFSET          6
 205 #define TX_DESC_FLAGS_OFFSET         8
 206 #define TX_DESC_STATUS_OFFSET        9
 207 #define TX_DESC_RETRY_OFFSET         10
 208 #define TX_DESC_RATE_OFFSET          11
 209 #define TX_DESC_KEY_INDEX_OFFSET     12
 210 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 211 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 212 #define TX_DESC_PACKET_TYPE_OFFSET   17
 213 #define TX_DESC_HOST_LENGTH_OFFSET   18
 214
 215 ///////////////////////////////////////////////////////
 216 // Host-MAC interface
 217 ///////////////////////////////////////////////////////
 218
 219 #define TX_STATUS_SUCCESS       0x00
 220
 221 #define TX_FIRM_OWN             0x80
 222 #define TX_DONE                 0x40
 223
 224 #define TX_ERROR                0x01
 225
 226 #define TX_PACKET_TYPE_DATA     0x01
 227 #define TX_PACKET_TYPE_MGMT     0x02
 228
 229 #define ISR_EMPTY               0x00        // no bits set in ISR
 230 #define ISR_TxCOMPLETE          0x01        // packet transmitted
 231 #define ISR_RxCOMPLETE          0x02        // packet received
 232 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
 233 #define ISR_FATAL_ERROR         0x08        // Fatal error
 234 #define ISR_COMMAND_COMPLETE    0x10        // command completed
 235 #define ISR_OUT_OF_RANGE        0x20        // command completed
 236 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
 237 #define ISR_GENERIC_IRQ         0x80
 238
 239 #define Local_Mib_Type          0x01
 240 #define Mac_Address_Mib_Type    0x02
 241 #define Mac_Mib_Type            0x03
 242 #define Statistics_Mib_Type     0x04
 243 #define Mac_Mgmt_Mib_Type       0x05
 244 #define Mac_Wep_Mib_Type        0x06
 245 #define Phy_Mib_Type            0x07
 246 #define Multi_Domain_MIB        0x08
 247
 248 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 249 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 250 #define MAC_MIB_RTS_THRESHOLD_POS             10
 251 #define MAC_MIB_SHORT_RETRY_POS               16
 252 #define MAC_MIB_LONG_RETRY_POS                17
 253 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 254 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 255 #define MAC_MGMT_MIB_STATION_ID_POS           6
 256 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 257 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 258 #define MAC_MGMT_MIB_PS_MODE_POS              53
 259 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 260 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 261 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 262 #define PHY_MIB_CHANNEL_POS                   14
 263 #define PHY_MIB_RATE_SET_POS                  20
 264 #define PHY_MIB_REG_DOMAIN_POS                26
 265 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 266 #define LOCAL_MIB_SSID_SIZE                   5
 267 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 268 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 269 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 270 #define LOCAL_MIB_PREAMBLE_TYPE               9
 271 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 272
 273 #define         CMD_Set_MIB_Vars              0x01
 274 #define         CMD_Get_MIB_Vars              0x02
 275 #define         CMD_Scan                      0x03
 276 #define         CMD_Join                      0x04
 277 #define         CMD_Start                     0x05
 278 #define         CMD_EnableRadio               0x06
 279 #define         CMD_DisableRadio              0x07
 280 #define         CMD_SiteSurvey                0x0B
 281
 282 #define         CMD_STATUS_IDLE                   0x00
 283 #define         CMD_STATUS_COMPLETE               0x01
 284 #define         CMD_STATUS_UNKNOWN                0x02
 285 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 286 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 287 #define         CMD_STATUS_TIME_OUT               0x07
 288 #define         CMD_STATUS_IN_PROGRESS            0x08
 289 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 290 #define         CMD_STATUS_HOST_ERROR             0xFF
 291 #define         CMD_STATUS_BUSY                   0xFE
 292
 293 #define CMD_BLOCK_COMMAND_OFFSET        0
 294 #define CMD_BLOCK_STATUS_OFFSET         1
 295 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 296
 297 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 298
 299 #define MGMT_FRAME_BODY_OFFSET          24
 300 #define MAX_AUTHENTICATION_RETRIES      3
 301 #define MAX_ASSOCIATION_RETRIES         3
 302
 303 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 304
 305 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 306 #define LOOP_RETRY_LIMIT   500000
 307
 308 #define ACTIVE_MODE     1
 309 #define PS_MODE         2
 310
 311 #define MAX_ENCRYPTION_KEYS 4
 312 #define MAX_ENCRYPTION_KEY_SIZE 40
 313
 314 ///////////////////////////////////////////////////////////////////////////
 315 // 802.11 related definitions
 316 ///////////////////////////////////////////////////////////////////////////
 317
 318 //
 319 // Regulatory Domains
 320 //
 321
 322 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
 323 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
 324 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
 325 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
 326 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
 327 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
 328 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
 329 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
 330
 331 #define BSS_TYPE_AD_HOC         1
 332 #define BSS_TYPE_INFRASTRUCTURE 2
 333
 334 #define SCAN_TYPE_ACTIVE        0
 335 #define SCAN_TYPE_PASSIVE       1
 336
 337 #define LONG_PREAMBLE           0
 338 #define SHORT_PREAMBLE          1
 339 #define AUTO_PREAMBLE           2
 340
 341 #define DATA_FRAME_WS_HEADER_SIZE   30
 342
 343 /* promiscuous mode control */
 344 #define PROM_MODE_OFF                   0x0
 345 #define PROM_MODE_UNKNOWN               0x1
 346 #define PROM_MODE_CRC_FAILED            0x2
 347 #define PROM_MODE_DUPLICATED            0x4
 348 #define PROM_MODE_MGMT                  0x8
 349 #define PROM_MODE_CTRL                  0x10
 350 #define PROM_MODE_BAD_PROTOCOL          0x20
 351
 352 #define IFACE_INT_STATUS_OFFSET         0
 353 #define IFACE_INT_MASK_OFFSET           1
 354 #define IFACE_LOCKOUT_HOST_OFFSET       2
 355 #define IFACE_LOCKOUT_MAC_OFFSET        3
 356 #define IFACE_FUNC_CTRL_OFFSET          28
 357 #define IFACE_MAC_STAT_OFFSET           30
 358 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 359
 360 #define CIPHER_SUITE_NONE     0
 361 #define CIPHER_SUITE_WEP_64   1
 362 #define CIPHER_SUITE_TKIP     2
 363 #define CIPHER_SUITE_AES      3
 364 #define CIPHER_SUITE_CCX      4
 365 #define CIPHER_SUITE_WEP_128  5
 366
 367 //
 368 // IFACE MACROS & definitions
 369 //
 370 //
 371
 372 // FuncCtrl field:
 373 //
 374 #define FUNC_CTRL_TxENABLE              0x10
 375 #define FUNC_CTRL_RxENABLE              0x20
 376 #define FUNC_CTRL_INIT_COMPLETE         0x01
 377
 378 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 379    For copyright information and source see the end of this file. */
 380 static u8 mac_reader[] = {
 381         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
 382         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
 383         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 384         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
 385         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
 386         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
 387         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
 388         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
 389         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
 390         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
 391         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 392         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 393         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 394         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 395         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
 396         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
 397         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
 398         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
 399         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
 400         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
 401         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
 402         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
 403         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
 404         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 405         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 406         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
 407         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
 408         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
 409         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
 410         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
 411         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
 412         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
 413         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
 414         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
 415         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
 416         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
 417         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
 418         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
 419         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
 420         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
 421         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
 422         0x00,0x01,0x00,0x02
 423 };
 424
 425 struct atmel_private {
 426         void *card; /* Bus dependent stucture varies for PCcard */
 427         int (*present_callback)(void *); /* And callback which uses it */
 428         char firmware_id[32];
 429         AtmelFWType firmware_type;
 430         u8 *firmware;
 431         int firmware_length;
 432         struct timer_list management_timer;
 433         struct net_device *dev;
 434         struct device *sys_dev;
 435         struct iw_statistics wstats;
 436         spinlock_t irqlock, timerlock;  // spinlocks
 437         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 438         enum {
 439                 CARD_TYPE_PARALLEL_FLASH,
 440                 CARD_TYPE_SPI_FLASH,
 441                 CARD_TYPE_EEPROM
 442         } card_type;
 443         int do_rx_crc; /* If we need to CRC incoming packets */
 444         int probe_crc; /* set if we don't yet know */
 445         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 446         u16 rx_desc_head;
 447         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 448         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 449
 450         u16 frag_seq, frag_len, frag_no;
 451         u8 frag_source[6];
 452
 453         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 454         u8 group_cipher_suite, pairwise_cipher_suite;
 455         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 456         int wep_key_len[MAX_ENCRYPTION_KEYS];
 457         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 458
 459         u16 host_info_base;
 460         struct host_info_struct {
 461                 /* NB this is matched to the hardware, don't change. */
 462                 u8 volatile int_status;
 463                 u8 volatile int_mask;
 464                 u8 volatile lockout_host;
 465                 u8 volatile lockout_mac;
 466
 467                 u16 tx_buff_pos;
 468                 u16 tx_buff_size;
 469                 u16 tx_desc_pos;
 470                 u16 tx_desc_count;
 471
 472                 u16 rx_buff_pos;
 473                 u16 rx_buff_size;
 474                 u16 rx_desc_pos;
 475                 u16 rx_desc_count;
 476
 477                 u16 build_version;
 478                 u16 command_pos;
 479
 480                 u16 major_version;
 481                 u16 minor_version;
 482
 483                 u16 func_ctrl;
 484                 u16 mac_status;
 485                 u16 generic_IRQ_type;
 486                 u8  reserved[2];
 487         } host_info;
 488
 489         enum {
 490                 STATION_STATE_SCANNING,
 491                 STATION_STATE_JOINNING,
 492                 STATION_STATE_AUTHENTICATING,
 493                 STATION_STATE_ASSOCIATING,
 494                 STATION_STATE_READY,
 495                 STATION_STATE_REASSOCIATING,
 496                 STATION_STATE_DOWN,
 497                 STATION_STATE_MGMT_ERROR
 498         } station_state;
 499
 500         int operating_mode, power_mode;
 501         time_t last_qual;
 502         int beacons_this_sec;
 503         int channel;
 504         int reg_domain, config_reg_domain;
 505         int tx_rate;
 506         int auto_tx_rate;
 507         int rts_threshold;
 508         int frag_threshold;
 509         int long_retry, short_retry;
 510         int preamble;
 511         int default_beacon_period, beacon_period, listen_interval;
 512         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 513         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 514         enum {
 515                 SITE_SURVEY_IDLE,
 516                 SITE_SURVEY_IN_PROGRESS,
 517                 SITE_SURVEY_COMPLETED
 518         } site_survey_state;
 519         unsigned long last_survey;
 520
 521         int station_was_associated, station_is_associated;
 522         int fast_scan;
 523
 524         struct bss_info {
 525                 int channel;
 526                 int SSIDsize;
 527                 int RSSI;
 528                 int UsingWEP;
 529                 int preamble;
 530                 int beacon_period;
 531                 int BSStype;
 532                 u8 BSSID[6];
 533                 u8 SSID[MAX_SSID_LENGTH];
 534         } BSSinfo[MAX_BSS_ENTRIES];
 535         int BSS_list_entries, current_BSS;
 536         int connect_to_any_BSS;
 537         int SSID_size, new_SSID_size;
 538         u8 CurrentBSSID[6], BSSID[6];
 539         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 540         u64 last_beacon_timestamp;
 541         u8 rx_buf[MAX_WIRELESS_BODY];
 542 };
 543
 544 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
 545
 546 static const struct {
 547         int reg_domain;
 548         int min, max;
 549         char *name;
 550 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 551                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 552                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 553                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 554                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 555                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 556                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 557                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 558
 559 static void build_wpa_mib(struct atmel_private *priv);
 560 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 561 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 562                                unsigned char *src, u16 len);
 563 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 564                                u16 src, u16 len);
 565 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 566 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 567 static int atmel_lock_mac(struct atmel_private *priv);
 568 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 569 static void atmel_command_irq(struct atmel_private *priv);
 570 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 571 static void atmel_management_frame(struct atmel_private *priv,
 572                                    struct ieee80211_hdr_4addr *header,
 573                                    u16 frame_len, u8 rssi);
 574 static void atmel_management_timer(u_long a);
 575 static void atmel_send_command(struct atmel_private *priv, int command,
 576                                void *cmd, int cmd_size);
 577 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 578                                    void *cmd, int cmd_size);
 579 static void atmel_transmit_management_frame(struct atmel_private *priv,
 580                                             struct ieee80211_hdr_4addr *header,
 581                                             u8 *body, int body_len);
 582
 583 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 584 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 585                            u8 data);
 586 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 587                             u16 data);
 588 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 589                           u8 *data, int data_len);
 590 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 591                           u8 *data, int data_len);
 592 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 593 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 594 static void atmel_smooth_qual(struct atmel_private *priv);
 595 static void atmel_writeAR(struct net_device *dev, u16 data);
 596 static int probe_atmel_card(struct net_device *dev);
 597 static int reset_atmel_card(struct net_device *dev);
 598 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 599 int atmel_open (struct net_device *dev);
 600
 601 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 602 {
 603         return priv->host_info_base + offset;
 604 }
 605
 606 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 607 {
 608         return priv->host_info.command_pos + offset;
 609 }
 610
 611 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 612 {
 613         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 614 }
 615
 616 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 617 {
 618         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 619 }
 620
 621 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 622 {
 623         return inb(dev->base_addr + offset);
 624 }
 625
 626 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 627 {
 628         outb(data, dev->base_addr + offset);
 629 }
 630
 631 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 632 {
 633         return inw(dev->base_addr + offset);
 634 }
 635
 636 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 637 {
 638         outw(data, dev->base_addr + offset);
 639 }
 640
 641 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 642 {
 643         atmel_writeAR(priv->dev, pos);
 644         return atmel_read8(priv->dev, DR);
 645 }
 646
 647 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 648 {
 649         atmel_writeAR(priv->dev, pos);
 650         atmel_write8(priv->dev, DR, data);
 651 }
 652
 653 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 654 {
 655         atmel_writeAR(priv->dev, pos);
 656         return atmel_read16(priv->dev, DR);
 657 }
 658
 659 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 660 {
 661         atmel_writeAR(priv->dev, pos);
 662         atmel_write16(priv->dev, DR, data);
 663 }
 664
 665 static const struct iw_handler_def atmel_handler_def;
 666
 667 static void tx_done_irq(struct atmel_private *priv)
 668 {
 669         int i;
 670
 671         for (i = 0;
 672              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 673                      i < priv->host_info.tx_desc_count;
 674              i++) {
 675                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 676                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 677                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 678
 679                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 680
 681                 priv->tx_free_mem += msdu_size;
 682                 priv->tx_desc_free++;
 683
 684                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 685                         priv->tx_buff_head = 0;
 686                 else
 687                         priv->tx_buff_head += msdu_size;
 688
 689                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 690                         priv->tx_desc_head++ ;
 691                 else
 692                         priv->tx_desc_head = 0;
 693
 694                 if (type == TX_PACKET_TYPE_DATA) {
 695                         if (status == TX_STATUS_SUCCESS)
 696                                 priv->dev->stats.tx_packets++;
 697                         else
 698                                 priv->dev->stats.tx_errors++;
 699                         netif_wake_queue(priv->dev);
 700                 }
 701         }
 702 }
 703
 704 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 705 {
 706         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 707
 708         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 709                 return 0;
 710
 711         if (bottom_free >= len)
 712                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 713
 714         if (priv->tx_free_mem - bottom_free >= len) {
 715                 priv->tx_buff_tail = 0;
 716                 return priv->host_info.tx_buff_pos;
 717         }
 718
 719         return 0;
 720 }
 721
 722 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 723                                  u16 len, u16 buff, u8 type)
 724 {
 725         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 726         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 727         if (!priv->use_wpa)
 728                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 729         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 730         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 731         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 732         if (priv->use_wpa) {
 733                 int cipher_type, cipher_length;
 734                 if (is_bcast) {
 735                         cipher_type = priv->group_cipher_suite;
 736                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 737                             cipher_type == CIPHER_SUITE_WEP_128)
 738                                 cipher_length = 8;
 739                         else if (cipher_type == CIPHER_SUITE_TKIP)
 740                                 cipher_length = 12;
 741                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 742                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 743                                 cipher_type = priv->pairwise_cipher_suite;
 744                                 cipher_length = 8;
 745                         } else {
 746                                 cipher_type = CIPHER_SUITE_NONE;
 747                                 cipher_length = 0;
 748                         }
 749                 } else {
 750                         cipher_type = priv->pairwise_cipher_suite;
 751                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 752                             cipher_type == CIPHER_SUITE_WEP_128)
 753                                 cipher_length = 8;
 754                         else if (cipher_type == CIPHER_SUITE_TKIP)
 755                                 cipher_length = 12;
 756                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 757                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 758                                 cipher_type = priv->group_cipher_suite;
 759                                 cipher_length = 8;
 760                         } else {
 761                                 cipher_type = CIPHER_SUITE_NONE;
 762                                 cipher_length = 0;
 763                         }
 764                 }
 765
 766                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 767                             cipher_type);
 768                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 769                             cipher_length);
 770         }
 771         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 772         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 773         if (priv->tx_desc_previous != priv->tx_desc_tail)
 774                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 775         priv->tx_desc_previous = priv->tx_desc_tail;
 776         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 777                 priv->tx_desc_tail++;
 778         else
 779                 priv->tx_desc_tail = 0;
 780         priv->tx_desc_free--;
 781         priv->tx_free_mem -= len;
 782 }
 783
 784 static int start_tx(struct sk_buff *skb, struct net_device *dev)
 785 {
 786         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 787         struct atmel_private *priv = netdev_priv(dev);
 788         struct ieee80211_hdr_4addr header;
 789         unsigned long flags;
 790         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 791
 792         if (priv->card && priv->present_callback &&
 793             !(*priv->present_callback)(priv->card)) {
 794                 dev->stats.tx_errors++;
 795                 dev_kfree_skb(skb);
 796                 return 0;
 797         }
 798
 799         if (priv->station_state != STATION_STATE_READY) {
 800                 dev->stats.tx_errors++;
 801                 dev_kfree_skb(skb);
 802                 return 0;
 803         }
 804
 805         /* first ensure the timer func cannot run */
 806         spin_lock_bh(&priv->timerlock);
 807         /* then stop the hardware ISR */
 808         spin_lock_irqsave(&priv->irqlock, flags);
 809         /* nb doing the above in the opposite order will deadlock */
 810
 811         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 812            12 first bytes (containing DA/SA) and put them in the appropriate
 813            fields of the Wireless Header. Thus the packet length is then the
 814            initial + 18 (+30-12) */
 815
 816         if (!(buff = find_tx_buff(priv, len + 18))) {
 817                 dev->stats.tx_dropped++;
 818                 spin_unlock_irqrestore(&priv->irqlock, flags);
 819                 spin_unlock_bh(&priv->timerlock);
 820                 netif_stop_queue(dev);
 821                 return 1;
 822         }
 823
 824         frame_ctl = IEEE80211_FTYPE_DATA;
 825         header.duration_id = 0;
 826         header.seq_ctl = 0;
 827         if (priv->wep_is_on)
 828                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 829         if (priv->operating_mode == IW_MODE_ADHOC) {
 830                 skb_copy_from_linear_data(skb, &header.addr1, 6);
 831                 memcpy(&header.addr2, dev->dev_addr, 6);
 832                 memcpy(&header.addr3, priv->BSSID, 6);
 833         } else {
 834                 frame_ctl |= IEEE80211_FCTL_TODS;
 835                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 836                 memcpy(&header.addr2, dev->dev_addr, 6);
 837                 skb_copy_from_linear_data(skb, &header.addr3, 6);
 838         }
 839
 840         if (priv->use_wpa)
 841                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 842
 843         header.frame_ctl = cpu_to_le16(frame_ctl);
 844         /* Copy the wireless header into the card */
 845         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 846         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 847         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 848         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 849
 850         /* low bit of first byte of destination tells us if broadcast */
 851         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 852         dev->trans_start = jiffies;
 853         dev->stats.tx_bytes += len;
 854
 855         spin_unlock_irqrestore(&priv->irqlock, flags);
 856         spin_unlock_bh(&priv->timerlock);
 857         dev_kfree_skb(skb);
 858
 859         return 0;
 860 }
 861
 862 static void atmel_transmit_management_frame(struct atmel_private *priv,
 863                                             struct ieee80211_hdr_4addr *header,
 864                                             u8 *body, int body_len)
 865 {
 866         u16 buff;
 867         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 868
 869         if (!(buff = find_tx_buff(priv, len)))
 870                 return;
 871
 872         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 873         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 874         priv->tx_buff_tail += len;
 875         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 876 }
 877
 878 static void fast_rx_path(struct atmel_private *priv,
 879                          struct ieee80211_hdr_4addr *header,
 880                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 881 {
 882         /* fast path: unfragmented packet copy directly into skbuf */
 883         u8 mac4[6];
 884         struct sk_buff  *skb;
 885         unsigned char *skbp;
 886
 887         /* get the final, mac 4 header field, this tells us encapsulation */
 888         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 889         msdu_size -= 6;
 890
 891         if (priv->do_rx_crc) {
 892                 crc = crc32_le(crc, mac4, 6);
 893                 msdu_size -= 4;
 894         }
 895
 896         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 897                 priv->dev->stats.rx_dropped++;
 898                 return;
 899         }
 900
 901         skb_reserve(skb, 2);
 902         skbp = skb_put(skb, msdu_size + 12);
 903         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 904
 905         if (priv->do_rx_crc) {
 906                 u32 netcrc;
 907                 crc = crc32_le(crc, skbp + 12, msdu_size);
 908                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 909                 if ((crc ^ 0xffffffff) != netcrc) {
 910                         priv->dev->stats.rx_crc_errors++;
 911                         dev_kfree_skb(skb);
 912                         return;
 913                 }
 914         }
 915
 916         memcpy(skbp, header->addr1, 6); /* destination address */
 917         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 918                 memcpy(&skbp[6], header->addr3, 6);
 919         else
 920                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 921
 922         priv->dev->last_rx = jiffies;
 923         skb->protocol = eth_type_trans(skb, priv->dev);
 924         skb->ip_summed = CHECKSUM_NONE;
 925         netif_rx(skb);
 926         priv->dev->stats.rx_bytes += 12 + msdu_size;
 927         priv->dev->stats.rx_packets++;
 928 }
 929
 930 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 931    It doesn't matter that this is slow: it is only used to proble the first few
 932    packets. */
 933 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 934 {
 935         int i = msdu_size - 4;
 936         u32 netcrc, crc = 0xffffffff;
 937
 938         if (msdu_size < 4)
 939                 return 0;
 940
 941         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 942
 943         atmel_writeAR(priv->dev, packet_loc);
 944         while (i--) {
 945                 u8 octet = atmel_read8(priv->dev, DR);
 946                 crc = crc32_le(crc, &octet, 1);
 947         }
 948
 949         return (crc ^ 0xffffffff) == netcrc;
 950 }
 951
 952 static void frag_rx_path(struct atmel_private *priv,
 953                          struct ieee80211_hdr_4addr *header,
 954                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 955                          u8 frag_no, int more_frags)
 956 {
 957         u8 mac4[6];
 958         u8 source[6];
 959         struct sk_buff *skb;
 960
 961         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 962                 memcpy(source, header->addr3, 6);
 963         else
 964                 memcpy(source, header->addr2, 6);
 965
 966         rx_packet_loc += 24; /* skip header */
 967
 968         if (priv->do_rx_crc)
 969                 msdu_size -= 4;
 970
 971         if (frag_no == 0) { /* first fragment */
 972                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 973                 msdu_size -= 6;
 974                 rx_packet_loc += 6;
 975
 976                 if (priv->do_rx_crc)
 977                         crc = crc32_le(crc, mac4, 6);
 978
 979                 priv->frag_seq = seq_no;
 980                 priv->frag_no = 1;
 981                 priv->frag_len = msdu_size;
 982                 memcpy(priv->frag_source, source, 6);
 983                 memcpy(&priv->rx_buf[6], source, 6);
 984                 memcpy(priv->rx_buf, header->addr1, 6);
 985
 986                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 987
 988                 if (priv->do_rx_crc) {
 989                         u32 netcrc;
 990                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 991                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 992                         if ((crc ^ 0xffffffff) != netcrc) {
 993                                 priv->dev->stats.rx_crc_errors++;
 994                                 memset(priv->frag_source, 0xff, 6);
 995                         }
 996                 }
 997
 998         } else if (priv->frag_no == frag_no &&
 999                    priv->frag_seq == seq_no &&
1000                    memcmp(priv->frag_source, source, 6) == 0) {
1001
1002                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1003                                    rx_packet_loc, msdu_size);
1004                 if (priv->do_rx_crc) {
1005                         u32 netcrc;
1006                         crc = crc32_le(crc,
1007                                        &priv->rx_buf[12 + priv->frag_len],
1008                                        msdu_size);
1009                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1010                         if ((crc ^ 0xffffffff) != netcrc) {
1011                                 priv->dev->stats.rx_crc_errors++;
1012                                 memset(priv->frag_source, 0xff, 6);
1013                                 more_frags = 1; /* don't send broken assembly */
1014                         }
1015                 }
1016
1017                 priv->frag_len += msdu_size;
1018                 priv->frag_no++;
1019
1020                 if (!more_frags) { /* last one */
1021                         memset(priv->frag_source, 0xff, 6);
1022                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1023                                 priv->dev->stats.rx_dropped++;
1024                         } else {
1025                                 skb_reserve(skb, 2);
1026                                 memcpy(skb_put(skb, priv->frag_len + 12),
1027                                        priv->rx_buf,
1028                                        priv->frag_len + 12);
1029                                 priv->dev->last_rx = jiffies;
1030                                 skb->protocol = eth_type_trans(skb, priv->dev);
1031                                 skb->ip_summed = CHECKSUM_NONE;
1032                                 netif_rx(skb);
1033                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1034                                 priv->dev->stats.rx_packets++;
1035                         }
1036                 }
1037         } else
1038                 priv->wstats.discard.fragment++;
1039 }
1040
1041 static void rx_done_irq(struct atmel_private *priv)
1042 {
1043         int i;
1044         struct ieee80211_hdr_4addr header;
1045
1046         for (i = 0;
1047              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1048                      i < priv->host_info.rx_desc_count;
1049              i++) {
1050
1051                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1052                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1053                 u32 crc = 0xffffffff;
1054
1055                 if (status != RX_STATUS_SUCCESS) {
1056                         if (status == 0xc1) /* determined by experiment */
1057                                 priv->wstats.discard.nwid++;
1058                         else
1059                                 priv->dev->stats.rx_errors++;
1060                         goto next;
1061                 }
1062
1063                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1064                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1065
1066                 if (msdu_size < 30) {
1067                         priv->dev->stats.rx_errors++;
1068                         goto next;
1069                 }
1070
1071                 /* Get header as far as end of seq_ctl */
1072                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1073                 frame_ctl = le16_to_cpu(header.frame_ctl);
1074                 seq_control = le16_to_cpu(header.seq_ctl);
1075
1076                 /* probe for CRC use here if needed  once five packets have
1077                    arrived with the same crc status, we assume we know what's
1078                    happening and stop probing */
1079                 if (priv->probe_crc) {
1080                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1081                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1082                         } else {
1083                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1084                         }
1085                         if (priv->do_rx_crc) {
1086                                 if (priv->crc_ok_cnt++ > 5)
1087                                         priv->probe_crc = 0;
1088                         } else {
1089                                 if (priv->crc_ko_cnt++ > 5)
1090                                         priv->probe_crc = 0;
1091                         }
1092                 }
1093
1094                 /* don't CRC header when WEP in use */
1095                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1096                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1097                 }
1098                 msdu_size -= 24; /* header */
1099
1100                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1101                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1102                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1103                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1104
1105                         if (!more_fragments && packet_fragment_no == 0) {
1106                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1107                         } else {
1108                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1109                                              packet_sequence_no, packet_fragment_no, more_fragments);
1110                         }
1111                 }
1112
1113                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1114                         /* copy rest of packet into buffer */
1115                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1116
1117                         /* we use the same buffer for frag reassembly and control packets */
1118                         memset(priv->frag_source, 0xff, 6);
1119
1120                         if (priv->do_rx_crc) {
1121                                 /* last 4 octets is crc */
1122                                 msdu_size -= 4;
1123                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1124                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1125                                         priv->dev->stats.rx_crc_errors++;
1126                                         goto next;
1127                                 }
1128                         }
1129
1130                         atmel_management_frame(priv, &header, msdu_size,
1131                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1132                 }
1133
1134 next:
1135                 /* release descriptor */
1136                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1137
1138                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1139                         priv->rx_desc_head++;
1140                 else
1141                         priv->rx_desc_head = 0;
1142         }
1143 }
1144
1145 static irqreturn_t service_interrupt(int irq, void *dev_id)
1146 {
1147         struct net_device *dev = (struct net_device *) dev_id;
1148         struct atmel_private *priv = netdev_priv(dev);
1149         u8 isr;
1150         int i = -1;
1151         static u8 irq_order[] = {
1152                 ISR_OUT_OF_RANGE,
1153                 ISR_RxCOMPLETE,
1154                 ISR_TxCOMPLETE,
1155                 ISR_RxFRAMELOST,
1156                 ISR_FATAL_ERROR,
1157                 ISR_COMMAND_COMPLETE,
1158                 ISR_IBSS_MERGE,
1159                 ISR_GENERIC_IRQ
1160         };
1161
1162         if (priv->card && priv->present_callback &&
1163             !(*priv->present_callback)(priv->card))
1164                 return IRQ_HANDLED;
1165
1166         /* In this state upper-level code assumes it can mess with
1167            the card unhampered by interrupts which may change register state.
1168            Note that even though the card shouldn't generate interrupts
1169            the inturrupt line may be shared. This allows card setup
1170            to go on without disabling interrupts for a long time. */
1171         if (priv->station_state == STATION_STATE_DOWN)
1172                 return IRQ_NONE;
1173
1174         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1175
1176         while (1) {
1177                 if (!atmel_lock_mac(priv)) {
1178                         /* failed to contact card */
1179                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1180                         return IRQ_HANDLED;
1181                 }
1182
1183                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1184                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1185
1186                 if (!isr) {
1187                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1188                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1189                 }
1190
1191                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1192
1193                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1194                         if (isr & irq_order[i])
1195                                 break;
1196
1197                 if (!atmel_lock_mac(priv)) {
1198                         /* failed to contact card */
1199                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1200                         return IRQ_HANDLED;
1201                 }
1202
1203                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1204                 isr ^= irq_order[i];
1205                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1206                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1207
1208                 switch (irq_order[i]) {
1209
1210                 case ISR_OUT_OF_RANGE:
1211                         if (priv->operating_mode == IW_MODE_INFRA &&
1212                             priv->station_state == STATION_STATE_READY) {
1213                                 priv->station_is_associated = 0;
1214                                 atmel_scan(priv, 1);
1215                         }
1216                         break;
1217
1218                 case ISR_RxFRAMELOST:
1219                         priv->wstats.discard.misc++;
1220                         /* fall through */
1221                 case ISR_RxCOMPLETE:
1222                         rx_done_irq(priv);
1223                         break;
1224
1225                 case ISR_TxCOMPLETE:
1226                         tx_done_irq(priv);
1227                         break;
1228
1229                 case ISR_FATAL_ERROR:
1230                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1231                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1232                         break;
1233
1234                 case ISR_COMMAND_COMPLETE:
1235                         atmel_command_irq(priv);
1236                         break;
1237
1238                 case ISR_IBSS_MERGE:
1239                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1240                                       priv->CurrentBSSID, 6);
1241                         /* The WPA stuff cares about the current AP address */
1242                         if (priv->use_wpa)
1243                                 build_wpa_mib(priv);
1244                         break;
1245                 case ISR_GENERIC_IRQ:
1246                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1247                         break;
1248                 }
1249         }
1250 }
1251
1252 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1253 {
1254         struct atmel_private *priv = netdev_priv(dev);
1255
1256         /* update the link quality here in case we are seeing no beacons
1257            at all to drive the process */
1258         atmel_smooth_qual(priv);
1259
1260         priv->wstats.status = priv->station_state;
1261
1262         if (priv->operating_mode == IW_MODE_INFRA) {
1263                 if (priv->station_state != STATION_STATE_READY) {
1264                         priv->wstats.qual.qual = 0;
1265                         priv->wstats.qual.level = 0;
1266                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1267                                         | IW_QUAL_LEVEL_INVALID);
1268                 }
1269                 priv->wstats.qual.noise = 0;
1270                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1271         } else {
1272                 /* Quality levels cannot be determined in ad-hoc mode,
1273                    because we can 'hear' more that one remote station. */
1274                 priv->wstats.qual.qual = 0;
1275                 priv->wstats.qual.level = 0;
1276                 priv->wstats.qual.noise = 0;
1277                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1278                                         | IW_QUAL_LEVEL_INVALID
1279                                         | IW_QUAL_NOISE_INVALID;
1280                 priv->wstats.miss.beacon = 0;
1281         }
1282
1283         return &priv->wstats;
1284 }
1285
1286 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1287 {
1288         if ((new_mtu < 68) || (new_mtu > 2312))
1289                 return -EINVAL;
1290         dev->mtu = new_mtu;
1291         return 0;
1292 }
1293
1294 static int atmel_set_mac_address(struct net_device *dev, void *p)
1295 {
1296         struct sockaddr *addr = p;
1297
1298         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1299         return atmel_open(dev);
1300 }
1301
1302 EXPORT_SYMBOL(atmel_open);
1303
1304 int atmel_open(struct net_device *dev)
1305 {
1306         struct atmel_private *priv = netdev_priv(dev);
1307         int i, channel;
1308
1309         /* any scheduled timer is no longer needed and might screw things up.. */
1310         del_timer_sync(&priv->management_timer);
1311
1312         /* Interrupts will not touch the card once in this state... */
1313         priv->station_state = STATION_STATE_DOWN;
1314
1315         if (priv->new_SSID_size) {
1316                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1317                 priv->SSID_size = priv->new_SSID_size;
1318                 priv->new_SSID_size = 0;
1319         }
1320         priv->BSS_list_entries = 0;
1321
1322         priv->AuthenticationRequestRetryCnt = 0;
1323         priv->AssociationRequestRetryCnt = 0;
1324         priv->ReAssociationRequestRetryCnt = 0;
1325         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1326         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1327
1328         priv->site_survey_state = SITE_SURVEY_IDLE;
1329         priv->station_is_associated = 0;
1330
1331         if (!reset_atmel_card(dev))
1332                 return -EAGAIN;
1333
1334         if (priv->config_reg_domain) {
1335                 priv->reg_domain = priv->config_reg_domain;
1336                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1337         } else {
1338                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1339                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1340                         if (priv->reg_domain == channel_table[i].reg_domain)
1341                                 break;
1342                 if (i == ARRAY_SIZE(channel_table)) {
1343                         priv->reg_domain = REG_DOMAIN_MKK1;
1344                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1345                 }
1346         }
1347
1348         if ((channel = atmel_validate_channel(priv, priv->channel)))
1349                 priv->channel = channel;
1350
1351         /* this moves station_state on.... */
1352         atmel_scan(priv, 1);
1353
1354         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1355         return 0;
1356 }
1357
1358 static int atmel_close(struct net_device *dev)
1359 {
1360         struct atmel_private *priv = netdev_priv(dev);
1361
1362         /* Send event to userspace that we are disassociating */
1363         if (priv->station_state == STATION_STATE_READY) {
1364                 union iwreq_data wrqu;
1365
1366                 wrqu.data.length = 0;
1367                 wrqu.data.flags = 0;
1368                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1369                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1370                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1371         }
1372
1373         atmel_enter_state(priv, STATION_STATE_DOWN);
1374
1375         if (priv->bus_type == BUS_TYPE_PCCARD)
1376                 atmel_write16(dev, GCR, 0x0060);
1377         atmel_write16(dev, GCR, 0x0040);
1378         return 0;
1379 }
1380
1381 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1382 {
1383         /* check that channel is OK, if so return zero,
1384            else return suitable default channel */
1385         int i;
1386
1387         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1388                 if (priv->reg_domain == channel_table[i].reg_domain) {
1389                         if (channel >= channel_table[i].min &&
1390                             channel <= channel_table[i].max)
1391                                 return 0;
1392                         else
1393                                 return channel_table[i].min;
1394                 }
1395         return 0;
1396 }
1397
1398 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1399 {
1400         int i;
1401         char *p = buf;
1402         char *s, *r, *c;
1403
1404         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1405                      DRIVER_MAJOR, DRIVER_MINOR);
1406
1407         if (priv->station_state != STATION_STATE_DOWN) {
1408                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1409                                 "Firmware location:\t",
1410                              priv->host_info.major_version,
1411                              priv->host_info.minor_version,
1412                              priv->host_info.build_version);
1413
1414                 if (priv->card_type != CARD_TYPE_EEPROM)
1415                         p += sprintf(p, "on card\n");
1416                 else if (priv->firmware)
1417                         p += sprintf(p, "%s loaded by host\n",
1418                                      priv->firmware_id);
1419                 else
1420                         p += sprintf(p, "%s loaded by hotplug\n",
1421                                      priv->firmware_id);
1422
1423                 switch (priv->card_type) {
1424                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1425                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1426                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1427                 default: c = "<unknown>";
1428                 }
1429
1430                 r = "<unknown>";
1431                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1432                         if (priv->reg_domain == channel_table[i].reg_domain)
1433                                 r = channel_table[i].name;
1434
1435                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1436                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1437                 p += sprintf(p, "Host CRC checking:\t%s\n",
1438                              priv->do_rx_crc ? "On" : "Off");
1439                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1440                              priv->use_wpa ? "Yes" : "No");
1441         }
1442
1443         switch(priv->station_state) {
1444         case STATION_STATE_SCANNING: s = "Scanning"; break;
1445         case STATION_STATE_JOINNING: s = "Joining"; break;
1446         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1447         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1448         case STATION_STATE_READY: s = "Ready"; break;
1449         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1450         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1451         case STATION_STATE_DOWN: s = "Down"; break;
1452         default: s = "<unknown>";
1453         }
1454
1455         p += sprintf(p, "Current state:\t\t%s\n", s);
1456         return p - buf;
1457 }
1458
1459 static int atmel_read_proc(char *page, char **start, off_t off,
1460                            int count, int *eof, void *data)
1461 {
1462         struct atmel_private *priv = data;
1463         int len = atmel_proc_output (page, priv);
1464         if (len <= off+count) *eof = 1;
1465         *start = page + off;
1466         len -= off;
1467         if (len>count) len = count;
1468         if (len<0) len = 0;
1469         return len;
1470 }
1471
1472 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1473                                    const AtmelFWType fw_type,
1474                                    struct device *sys_dev,
1475                                    int (*card_present)(void *), void *card)
1476 {
1477         struct proc_dir_entry *ent;
1478         struct net_device *dev;
1479         struct atmel_private *priv;
1480         int rc;
1481         DECLARE_MAC_BUF(mac);
1482
1483         /* Create the network device object. */
1484         dev = alloc_etherdev(sizeof(*priv));
1485         if (!dev) {
1486                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1487                 return NULL;
1488         }
1489         if (dev_alloc_name(dev, dev->name) < 0) {
1490                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1491                 goto err_out_free;
1492         }
1493
1494         priv = netdev_priv(dev);
1495         priv->dev = dev;
1496         priv->sys_dev = sys_dev;
1497         priv->present_callback = card_present;
1498         priv->card = card;
1499         priv->firmware = NULL;
1500         priv->firmware_id[0] = '\0';
1501         priv->firmware_type = fw_type;
1502         if (firmware) /* module parameter */
1503                 strcpy(priv->firmware_id, firmware);
1504         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1505         priv->station_state = STATION_STATE_DOWN;
1506         priv->do_rx_crc = 0;
1507         /* For PCMCIA cards, some chips need CRC, some don't
1508            so we have to probe. */
1509         if (priv->bus_type == BUS_TYPE_PCCARD) {
1510                 priv->probe_crc = 1;
1511                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1512         } else
1513                 priv->probe_crc = 0;
1514         priv->last_qual = jiffies;
1515         priv->last_beacon_timestamp = 0;
1516         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1517         memset(priv->BSSID, 0, 6);
1518         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1519         priv->station_was_associated = 0;
1520
1521         priv->last_survey = jiffies;
1522         priv->preamble = LONG_PREAMBLE;
1523         priv->operating_mode = IW_MODE_INFRA;
1524         priv->connect_to_any_BSS = 0;
1525         priv->config_reg_domain = 0;
1526         priv->reg_domain = 0;
1527         priv->tx_rate = 3;
1528         priv->auto_tx_rate = 1;
1529         priv->channel = 4;
1530         priv->power_mode = 0;
1531         priv->SSID[0] = '\0';
1532         priv->SSID_size = 0;
1533         priv->new_SSID_size = 0;
1534         priv->frag_threshold = 2346;
1535         priv->rts_threshold = 2347;
1536         priv->short_retry = 7;
1537         priv->long_retry = 4;
1538
1539         priv->wep_is_on = 0;
1540         priv->default_key = 0;
1541         priv->encryption_level = 0;
1542         priv->exclude_unencrypted = 0;
1543         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1544         priv->use_wpa = 0;
1545         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1546         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1547
1548         priv->default_beacon_period = priv->beacon_period = 100;
1549         priv->listen_interval = 1;
1550
1551         init_timer(&priv->management_timer);
1552         spin_lock_init(&priv->irqlock);
1553         spin_lock_init(&priv->timerlock);
1554         priv->management_timer.function = atmel_management_timer;
1555         priv->management_timer.data = (unsigned long) dev;
1556
1557         dev->open = atmel_open;
1558         dev->stop = atmel_close;
1559         dev->change_mtu = atmel_change_mtu;
1560         dev->set_mac_address = atmel_set_mac_address;
1561         dev->hard_start_xmit = start_tx;
1562         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1563         dev->do_ioctl = atmel_ioctl;
1564         dev->irq = irq;
1565         dev->base_addr = port;
1566
1567         SET_NETDEV_DEV(dev, sys_dev);
1568
1569         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1570                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1571                 goto err_out_free;
1572         }
1573
1574         if (!request_region(dev->base_addr, 32,
1575                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1576                 goto err_out_irq;
1577         }
1578
1579         if (register_netdev(dev))
1580                 goto err_out_res;
1581
1582         if (!probe_atmel_card(dev)){
1583                 unregister_netdev(dev);
1584                 goto err_out_res;
1585         }
1586
1587         netif_carrier_off(dev);
1588
1589         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1590         if (!ent)
1591                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1592
1593         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %s\n",
1594                dev->name, DRIVER_MAJOR, DRIVER_MINOR, print_mac(mac, dev->dev_addr));
1595
1596         return dev;
1597
1598 err_out_res:
1599         release_region( dev->base_addr, 32);
1600 err_out_irq:
1601         free_irq(dev->irq, dev);
1602 err_out_free:
1603         free_netdev(dev);
1604         return NULL;
1605 }
1606
1607 EXPORT_SYMBOL(init_atmel_card);
1608
1609 void stop_atmel_card(struct net_device *dev)
1610 {
1611         struct atmel_private *priv = netdev_priv(dev);
1612
1613         /* put a brick on it... */
1614         if (priv->bus_type == BUS_TYPE_PCCARD)
1615                 atmel_write16(dev, GCR, 0x0060);
1616         atmel_write16(dev, GCR, 0x0040);
1617
1618         del_timer_sync(&priv->management_timer);
1619         unregister_netdev(dev);
1620         remove_proc_entry("driver/atmel", NULL);
1621         free_irq(dev->irq, dev);
1622         kfree(priv->firmware);
1623         release_region(dev->base_addr, 32);
1624         free_netdev(dev);
1625 }
1626
1627 EXPORT_SYMBOL(stop_atmel_card);
1628
1629 static int atmel_set_essid(struct net_device *dev,
1630                            struct iw_request_info *info,
1631                            struct iw_point *dwrq,
1632                            char *extra)
1633 {
1634         struct atmel_private *priv = netdev_priv(dev);
1635
1636         /* Check if we asked for `any' */
1637         if(dwrq->flags == 0) {
1638                 priv->connect_to_any_BSS = 1;
1639         } else {
1640                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1641
1642                 priv->connect_to_any_BSS = 0;
1643
1644                 /* Check the size of the string */
1645                 if (dwrq->length > MAX_SSID_LENGTH)
1646                          return -E2BIG;
1647                 if (index != 0)
1648                         return -EINVAL;
1649
1650                 memcpy(priv->new_SSID, extra, dwrq->length);
1651                 priv->new_SSID_size = dwrq->length;
1652         }
1653
1654         return -EINPROGRESS;
1655 }
1656
1657 static int atmel_get_essid(struct net_device *dev,
1658                            struct iw_request_info *info,
1659                            struct iw_point *dwrq,
1660                            char *extra)
1661 {
1662         struct atmel_private *priv = netdev_priv(dev);
1663
1664         /* Get the current SSID */
1665         if (priv->new_SSID_size != 0) {
1666                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1667                 dwrq->length = priv->new_SSID_size;
1668         } else {
1669                 memcpy(extra, priv->SSID, priv->SSID_size);
1670                 dwrq->length = priv->SSID_size;
1671         }
1672
1673         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1674
1675         return 0;
1676 }
1677
1678 static int atmel_get_wap(struct net_device *dev,
1679                          struct iw_request_info *info,
1680                          struct sockaddr *awrq,
1681                          char *extra)
1682 {
1683         struct atmel_private *priv = netdev_priv(dev);
1684         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1685         awrq->sa_family = ARPHRD_ETHER;
1686
1687         return 0;
1688 }
1689
1690 static int atmel_set_encode(struct net_device *dev,
1691                             struct iw_request_info *info,
1692                             struct iw_point *dwrq,
1693                             char *extra)
1694 {
1695         struct atmel_private *priv = netdev_priv(dev);
1696
1697         /* Basic checking: do we have a key to set ?
1698          * Note : with the new API, it's impossible to get a NULL pointer.
1699          * Therefore, we need to check a key size == 0 instead.
1700          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1701          * when no key is present (only change flags), but older versions
1702          * don't do it. - Jean II */
1703         if (dwrq->length > 0) {
1704                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1705                 int current_index = priv->default_key;
1706                 /* Check the size of the key */
1707                 if (dwrq->length > 13) {
1708                         return -EINVAL;
1709                 }
1710                 /* Check the index (none -> use current) */
1711                 if (index < 0 || index >= 4)
1712                         index = current_index;
1713                 else
1714                         priv->default_key = index;
1715                 /* Set the length */
1716                 if (dwrq->length > 5)
1717                         priv->wep_key_len[index] = 13;
1718                 else
1719                         if (dwrq->length > 0)
1720                                 priv->wep_key_len[index] = 5;
1721                         else
1722                                 /* Disable the key */
1723                                 priv->wep_key_len[index] = 0;
1724                 /* Check if the key is not marked as invalid */
1725                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1726                         /* Cleanup */
1727                         memset(priv->wep_keys[index], 0, 13);
1728                         /* Copy the key in the driver */
1729                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1730                 }
1731                 /* WE specify that if a valid key is set, encryption
1732                  * should be enabled (user may turn it off later)
1733                  * This is also how "iwconfig ethX key on" works */
1734                 if (index == current_index &&
1735                     priv->wep_key_len[index] > 0) {
1736                         priv->wep_is_on = 1;
1737                         priv->exclude_unencrypted = 1;
1738                         if (priv->wep_key_len[index] > 5) {
1739                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1740                                 priv->encryption_level = 2;
1741                         } else {
1742                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1743                                 priv->encryption_level = 1;
1744                         }
1745                 }
1746         } else {
1747                 /* Do we want to just set the transmit key index ? */
1748                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1749                 if (index >= 0 && index < 4) {
1750                         priv->default_key = index;
1751                 } else
1752                         /* Don't complain if only change the mode */
1753                         if (!(dwrq->flags & IW_ENCODE_MODE))
1754                                 return -EINVAL;
1755         }
1756         /* Read the flags */
1757         if (dwrq->flags & IW_ENCODE_DISABLED) {
1758                 priv->wep_is_on = 0;
1759                 priv->encryption_level = 0;
1760                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1761         } else {
1762                 priv->wep_is_on = 1;
1763                 if (priv->wep_key_len[priv->default_key] > 5) {
1764                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1765                         priv->encryption_level = 2;
1766                 } else {
1767                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1768                         priv->encryption_level = 1;
1769                 }
1770         }
1771         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1772                 priv->exclude_unencrypted = 1;
1773         if(dwrq->flags & IW_ENCODE_OPEN)
1774                 priv->exclude_unencrypted = 0;
1775
1776         return -EINPROGRESS;            /* Call commit handler */
1777 }
1778
1779 static int atmel_get_encode(struct net_device *dev,
1780                             struct iw_request_info *info,
1781                             struct iw_point *dwrq,
1782                             char *extra)
1783 {
1784         struct atmel_private *priv = netdev_priv(dev);
1785         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1786
1787         if (!priv->wep_is_on)
1788                 dwrq->flags = IW_ENCODE_DISABLED;
1789         else {
1790                 if (priv->exclude_unencrypted)
1791                         dwrq->flags = IW_ENCODE_RESTRICTED;
1792                 else
1793                         dwrq->flags = IW_ENCODE_OPEN;
1794         }
1795                 /* Which key do we want ? -1 -> tx index */
1796         if (index < 0 || index >= 4)
1797                 index = priv->default_key;
1798         dwrq->flags |= index + 1;
1799         /* Copy the key to the user buffer */
1800         dwrq->length = priv->wep_key_len[index];
1801         if (dwrq->length > 16) {
1802                 dwrq->length=0;
1803         } else {
1804                 memset(extra, 0, 16);
1805                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1806         }
1807
1808         return 0;
1809 }
1810
1811 static int atmel_set_encodeext(struct net_device *dev,
1812                             struct iw_request_info *info,
1813                             union iwreq_data *wrqu,
1814                             char *extra)
1815 {
1816         struct atmel_private *priv = netdev_priv(dev);
1817         struct iw_point *encoding = &wrqu->encoding;
1818         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1819         int idx, key_len, alg = ext->alg, set_key = 1;
1820
1821         /* Determine and validate the key index */
1822         idx = encoding->flags & IW_ENCODE_INDEX;
1823         if (idx) {
1824                 if (idx < 1 || idx > WEP_KEYS)
1825                         return -EINVAL;
1826                 idx--;
1827         } else
1828                 idx = priv->default_key;
1829
1830         if (encoding->flags & IW_ENCODE_DISABLED)
1831             alg = IW_ENCODE_ALG_NONE;
1832
1833         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1834                 priv->default_key = idx;
1835                 set_key = ext->key_len > 0 ? 1 : 0;
1836         }
1837
1838         if (set_key) {
1839                 /* Set the requested key first */
1840                 switch (alg) {
1841                 case IW_ENCODE_ALG_NONE:
1842                         priv->wep_is_on = 0;
1843                         priv->encryption_level = 0;
1844                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1845                         break;
1846                 case IW_ENCODE_ALG_WEP:
1847                         if (ext->key_len > 5) {
1848                                 priv->wep_key_len[idx] = 13;
1849                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1850                                 priv->encryption_level = 2;
1851                         } else if (ext->key_len > 0) {
1852                                 priv->wep_key_len[idx] = 5;
1853                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1854                                 priv->encryption_level = 1;
1855                         } else {
1856                                 return -EINVAL;
1857                         }
1858                         priv->wep_is_on = 1;
1859                         memset(priv->wep_keys[idx], 0, 13);
1860                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1861                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1862                         break;
1863                 default:
1864                         return -EINVAL;
1865                 }
1866         }
1867
1868         return -EINPROGRESS;
1869 }
1870
1871 static int atmel_get_encodeext(struct net_device *dev,
1872                             struct iw_request_info *info,
1873                             union iwreq_data *wrqu,
1874                             char *extra)
1875 {
1876         struct atmel_private *priv = netdev_priv(dev);
1877         struct iw_point *encoding = &wrqu->encoding;
1878         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1879         int idx, max_key_len;
1880
1881         max_key_len = encoding->length - sizeof(*ext);
1882         if (max_key_len < 0)
1883                 return -EINVAL;
1884
1885         idx = encoding->flags & IW_ENCODE_INDEX;
1886         if (idx) {
1887                 if (idx < 1 || idx > WEP_KEYS)
1888                         return -EINVAL;
1889                 idx--;
1890         } else
1891                 idx = priv->default_key;
1892
1893         encoding->flags = idx + 1;
1894         memset(ext, 0, sizeof(*ext));
1895
1896         if (!priv->wep_is_on) {
1897                 ext->alg = IW_ENCODE_ALG_NONE;
1898                 ext->key_len = 0;
1899                 encoding->flags |= IW_ENCODE_DISABLED;
1900         } else {
1901                 if (priv->encryption_level > 0)
1902                         ext->alg = IW_ENCODE_ALG_WEP;
1903                 else
1904                         return -EINVAL;
1905
1906                 ext->key_len = priv->wep_key_len[idx];
1907                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1908                 encoding->flags |= IW_ENCODE_ENABLED;
1909         }
1910
1911         return 0;
1912 }
1913
1914 static int atmel_set_auth(struct net_device *dev,
1915                                struct iw_request_info *info,
1916                                union iwreq_data *wrqu, char *extra)
1917 {
1918         struct atmel_private *priv = netdev_priv(dev);
1919         struct iw_param *param = &wrqu->param;
1920
1921         switch (param->flags & IW_AUTH_INDEX) {
1922         case IW_AUTH_WPA_VERSION:
1923         case IW_AUTH_CIPHER_PAIRWISE:
1924         case IW_AUTH_CIPHER_GROUP:
1925         case IW_AUTH_KEY_MGMT:
1926         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1927         case IW_AUTH_PRIVACY_INVOKED:
1928                 /*
1929                  * atmel does not use these parameters
1930                  */
1931                 break;
1932
1933         case IW_AUTH_DROP_UNENCRYPTED:
1934                 priv->exclude_unencrypted = param->value ? 1 : 0;
1935                 break;
1936
1937         case IW_AUTH_80211_AUTH_ALG: {
1938                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1939                                 priv->exclude_unencrypted = 1;
1940                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1941                                 priv->exclude_unencrypted = 0;
1942                         } else
1943                                 return -EINVAL;
1944                         break;
1945                 }
1946
1947         case IW_AUTH_WPA_ENABLED:
1948                 /* Silently accept disable of WPA */
1949                 if (param->value > 0)
1950                         return -EOPNOTSUPP;
1951                 break;
1952
1953         default:
1954                 return -EOPNOTSUPP;
1955         }
1956         return -EINPROGRESS;
1957 }
1958
1959 static int atmel_get_auth(struct net_device *dev,
1960                                struct iw_request_info *info,
1961                                union iwreq_data *wrqu, char *extra)
1962 {
1963         struct atmel_private *priv = netdev_priv(dev);
1964         struct iw_param *param = &wrqu->param;
1965
1966         switch (param->flags & IW_AUTH_INDEX) {
1967         case IW_AUTH_DROP_UNENCRYPTED:
1968                 param->value = priv->exclude_unencrypted;
1969                 break;
1970
1971         case IW_AUTH_80211_AUTH_ALG:
1972                 if (priv->exclude_unencrypted == 1)
1973                         param->value = IW_AUTH_ALG_SHARED_KEY;
1974                 else
1975                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1976                 break;
1977
1978         case IW_AUTH_WPA_ENABLED:
1979                 param->value = 0;
1980                 break;
1981
1982         default:
1983                 return -EOPNOTSUPP;
1984         }
1985         return 0;
1986 }
1987
1988
1989 static int atmel_get_name(struct net_device *dev,
1990                           struct iw_request_info *info,
1991                           char *cwrq,
1992                           char *extra)
1993 {
1994         strcpy(cwrq, "IEEE 802.11-DS");
1995         return 0;
1996 }
1997
1998 static int atmel_set_rate(struct net_device *dev,
1999                           struct iw_request_info *info,
2000                           struct iw_param *vwrq,
2001                           char *extra)
2002 {
2003         struct atmel_private *priv = netdev_priv(dev);
2004
2005         if (vwrq->fixed == 0) {
2006                 priv->tx_rate = 3;
2007                 priv->auto_tx_rate = 1;
2008         } else {
2009                 priv->auto_tx_rate = 0;
2010
2011                 /* Which type of value ? */
2012                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2013                         /* Setting by rate index */
2014                         priv->tx_rate = vwrq->value;
2015                 } else {
2016                 /* Setting by frequency value */
2017                         switch (vwrq->value) {
2018                         case  1000000: priv->tx_rate = 0; break;
2019                         case  2000000: priv->tx_rate = 1; break;
2020                         case  5500000: priv->tx_rate = 2; break;
2021                         case 11000000: priv->tx_rate = 3; break;
2022                         default: return -EINVAL;
2023                         }
2024                 }
2025         }
2026
2027         return -EINPROGRESS;
2028 }
2029
2030 static int atmel_set_mode(struct net_device *dev,
2031                           struct iw_request_info *info,
2032                           __u32 *uwrq,
2033                           char *extra)
2034 {
2035         struct atmel_private *priv = netdev_priv(dev);
2036
2037         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2038                 return -EINVAL;
2039
2040         priv->operating_mode = *uwrq;
2041         return -EINPROGRESS;
2042 }
2043
2044 static int atmel_get_mode(struct net_device *dev,
2045                           struct iw_request_info *info,
2046                           __u32 *uwrq,
2047                           char *extra)
2048 {
2049         struct atmel_private *priv = netdev_priv(dev);
2050
2051         *uwrq = priv->operating_mode;
2052         return 0;
2053 }
2054
2055 static int atmel_get_rate(struct net_device *dev,
2056                          struct iw_request_info *info,
2057                          struct iw_param *vwrq,
2058                          char *extra)
2059 {
2060         struct atmel_private *priv = netdev_priv(dev);
2061
2062         if (priv->auto_tx_rate) {
2063                 vwrq->fixed = 0;
2064                 vwrq->value = 11000000;
2065         } else {
2066                 vwrq->fixed = 1;
2067                 switch(priv->tx_rate) {
2068                 case 0: vwrq->value =  1000000; break;
2069                 case 1: vwrq->value =  2000000; break;
2070                 case 2: vwrq->value =  5500000; break;
2071                 case 3: vwrq->value = 11000000; break;
2072                 }
2073         }
2074         return 0;
2075 }
2076
2077 static int atmel_set_power(struct net_device *dev,
2078                            struct iw_request_info *info,
2079                            struct iw_param *vwrq,
2080                            char *extra)
2081 {
2082         struct atmel_private *priv = netdev_priv(dev);
2083         priv->power_mode = vwrq->disabled ? 0 : 1;
2084         return -EINPROGRESS;
2085 }
2086
2087 static int atmel_get_power(struct net_device *dev,
2088                            struct iw_request_info *info,
2089                            struct iw_param *vwrq,
2090                            char *extra)
2091 {
2092         struct atmel_private *priv = netdev_priv(dev);
2093         vwrq->disabled = priv->power_mode ? 0 : 1;
2094         vwrq->flags = IW_POWER_ON;
2095         return 0;
2096 }
2097
2098 static int atmel_set_retry(struct net_device *dev,
2099                            struct iw_request_info *info,
2100                            struct iw_param *vwrq,
2101                            char *extra)
2102 {
2103         struct atmel_private *priv = netdev_priv(dev);
2104
2105         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2106                 if (vwrq->flags & IW_RETRY_LONG)
2107                         priv->long_retry = vwrq->value;
2108                 else if (vwrq->flags & IW_RETRY_SHORT)
2109                         priv->short_retry = vwrq->value;
2110                 else {
2111                         /* No modifier : set both */
2112                         priv->long_retry = vwrq->value;
2113                         priv->short_retry = vwrq->value;
2114                 }
2115                 return -EINPROGRESS;
2116         }
2117
2118         return -EINVAL;
2119 }
2120
2121 static int atmel_get_retry(struct net_device *dev,
2122                            struct iw_request_info *info,
2123                            struct iw_param *vwrq,
2124                            char *extra)
2125 {
2126         struct atmel_private *priv = netdev_priv(dev);
2127
2128         vwrq->disabled = 0;      /* Can't be disabled */
2129
2130         /* Note : by default, display the short retry number */
2131         if (vwrq->flags & IW_RETRY_LONG) {
2132                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2133                 vwrq->value = priv->long_retry;
2134         } else {
2135                 vwrq->flags = IW_RETRY_LIMIT;
2136                 vwrq->value = priv->short_retry;
2137                 if (priv->long_retry != priv->short_retry)
2138                         vwrq->flags |= IW_RETRY_SHORT;
2139         }
2140
2141         return 0;
2142 }
2143
2144 static int atmel_set_rts(struct net_device *dev,
2145                          struct iw_request_info *info,
2146                          struct iw_param *vwrq,
2147                          char *extra)
2148 {
2149         struct atmel_private *priv = netdev_priv(dev);
2150         int rthr = vwrq->value;
2151
2152         if (vwrq->disabled)
2153                 rthr = 2347;
2154         if ((rthr < 0) || (rthr > 2347)) {
2155                 return -EINVAL;
2156         }
2157         priv->rts_threshold = rthr;
2158
2159         return -EINPROGRESS;            /* Call commit handler */
2160 }
2161
2162 static int atmel_get_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
2169         vwrq->value = priv->rts_threshold;
2170         vwrq->disabled = (vwrq->value >= 2347);
2171         vwrq->fixed = 1;
2172
2173         return 0;
2174 }
2175
2176 static int atmel_set_frag(struct net_device *dev,
2177                           struct iw_request_info *info,
2178                           struct iw_param *vwrq,
2179                           char *extra)
2180 {
2181         struct atmel_private *priv = netdev_priv(dev);
2182         int fthr = vwrq->value;
2183
2184         if (vwrq->disabled)
2185                 fthr = 2346;
2186         if ((fthr < 256) || (fthr > 2346)) {
2187                 return -EINVAL;
2188         }
2189         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2190         priv->frag_threshold = fthr;
2191
2192         return -EINPROGRESS;            /* Call commit handler */
2193 }
2194
2195 static int atmel_get_frag(struct net_device *dev,
2196                           struct iw_request_info *info,
2197                           struct iw_param *vwrq,
2198                           char *extra)
2199 {
2200         struct atmel_private *priv = netdev_priv(dev);
2201
2202         vwrq->value = priv->frag_threshold;
2203         vwrq->disabled = (vwrq->value >= 2346);
2204         vwrq->fixed = 1;
2205
2206         return 0;
2207 }
2208
2209 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2210                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2211
2212 static int atmel_set_freq(struct net_device *dev,
2213                           struct iw_request_info *info,
2214                           struct iw_freq *fwrq,
2215                           char *extra)
2216 {
2217         struct atmel_private *priv = netdev_priv(dev);
2218         int rc = -EINPROGRESS;          /* Call commit handler */
2219
2220         /* If setting by frequency, convert to a channel */
2221         if ((fwrq->e == 1) &&
2222             (fwrq->m >= (int) 241200000) &&
2223             (fwrq->m <= (int) 248700000)) {
2224                 int f = fwrq->m / 100000;
2225                 int c = 0;
2226                 while ((c < 14) && (f != frequency_list[c]))
2227                         c++;
2228                 /* Hack to fall through... */
2229                 fwrq->e = 0;
2230                 fwrq->m = c + 1;
2231         }
2232         /* Setting by channel number */
2233         if ((fwrq->m > 1000) || (fwrq->e > 0))
2234                 rc = -EOPNOTSUPP;
2235         else {
2236                 int channel = fwrq->m;
2237                 if (atmel_validate_channel(priv, channel) == 0) {
2238                         priv->channel = channel;
2239                 } else {
2240                         rc = -EINVAL;
2241                 }
2242         }
2243         return rc;
2244 }
2245
2246 static int atmel_get_freq(struct net_device *dev,
2247                           struct iw_request_info *info,
2248                           struct iw_freq *fwrq,
2249                           char *extra)
2250 {
2251         struct atmel_private *priv = netdev_priv(dev);
2252
2253         fwrq->m = priv->channel;
2254         fwrq->e = 0;
2255         return 0;
2256 }
2257
2258 static int atmel_set_scan(struct net_device *dev,
2259                           struct iw_request_info *info,
2260                           struct iw_param *vwrq,
2261                           char *extra)
2262 {
2263         struct atmel_private *priv = netdev_priv(dev);
2264         unsigned long flags;
2265
2266         /* Note : you may have realised that, as this is a SET operation,
2267          * this is privileged and therefore a normal user can't
2268          * perform scanning.
2269          * This is not an error, while the device perform scanning,
2270          * traffic doesn't flow, so it's a perfect DoS...
2271          * Jean II */
2272
2273         if (priv->station_state == STATION_STATE_DOWN)
2274                 return -EAGAIN;
2275
2276         /* Timeout old surveys. */
2277         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2278                 priv->site_survey_state = SITE_SURVEY_IDLE;
2279         priv->last_survey = jiffies;
2280
2281         /* Initiate a scan command */
2282         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2283                 return -EBUSY;
2284
2285         del_timer_sync(&priv->management_timer);
2286         spin_lock_irqsave(&priv->irqlock, flags);
2287
2288         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2289         priv->fast_scan = 0;
2290         atmel_scan(priv, 0);
2291         spin_unlock_irqrestore(&priv->irqlock, flags);
2292
2293         return 0;
2294 }
2295
2296 static int atmel_get_scan(struct net_device *dev,
2297                           struct iw_request_info *info,
2298                           struct iw_point *dwrq,
2299                           char *extra)
2300 {
2301         struct atmel_private *priv = netdev_priv(dev);
2302         int i;
2303         char *current_ev = extra;
2304         struct iw_event iwe;
2305
2306         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2307                 return -EAGAIN;
2308
2309         for (i = 0; i < priv->BSS_list_entries; i++) {
2310                 iwe.cmd = SIOCGIWAP;
2311                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2312                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2313                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2314
2315                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2316                 if (iwe.u.data.length > 32)
2317                         iwe.u.data.length = 32;
2318                 iwe.cmd = SIOCGIWESSID;
2319                 iwe.u.data.flags = 1;
2320                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2321
2322                 iwe.cmd = SIOCGIWMODE;
2323                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2324                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2325
2326                 iwe.cmd = SIOCGIWFREQ;
2327                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2328                 iwe.u.freq.e = 0;
2329                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2330
2331                 /* Add quality statistics */
2332                 iwe.cmd = IWEVQUAL;
2333                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2334                 iwe.u.qual.qual  = iwe.u.qual.level;
2335                 /* iwe.u.qual.noise  = SOMETHING */
2336                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA , &iwe, IW_EV_QUAL_LEN);
2337
2338
2339                 iwe.cmd = SIOCGIWENCODE;
2340                 if (priv->BSSinfo[i].UsingWEP)
2341                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2342                 else
2343                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2344                 iwe.u.data.length = 0;
2345                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2346         }
2347
2348         /* Length of data */
2349         dwrq->length = (current_ev - extra);
2350         dwrq->flags = 0;
2351
2352         return 0;
2353 }
2354
2355 static int atmel_get_range(struct net_device *dev,
2356                            struct iw_request_info *info,
2357                            struct iw_point *dwrq,
2358                            char *extra)
2359 {
2360         struct atmel_private *priv = netdev_priv(dev);
2361         struct iw_range *range = (struct iw_range *) extra;
2362         int k, i, j;
2363
2364         dwrq->length = sizeof(struct iw_range);
2365         memset(range, 0, sizeof(struct iw_range));
2366         range->min_nwid = 0x0000;
2367         range->max_nwid = 0x0000;
2368         range->num_channels = 0;
2369         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2370                 if (priv->reg_domain == channel_table[j].reg_domain) {
2371                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2372                         break;
2373                 }
2374         if (range->num_channels != 0) {
2375                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2376                         range->freq[k].i = i; /* List index */
2377                         range->freq[k].m = frequency_list[i - 1] * 100000;
2378                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2379                 }
2380                 range->num_frequency = k;
2381         }
2382
2383         range->max_qual.qual = 100;
2384         range->max_qual.level = 100;
2385         range->max_qual.noise = 0;
2386         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2387
2388         range->avg_qual.qual = 50;
2389         range->avg_qual.level = 50;
2390         range->avg_qual.noise = 0;
2391         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2392
2393         range->sensitivity = 0;
2394
2395         range->bitrate[0] =  1000000;
2396         range->bitrate[1] =  2000000;
2397         range->bitrate[2] =  5500000;
2398         range->bitrate[3] = 11000000;
2399         range->num_bitrates = 4;
2400
2401         range->min_rts = 0;
2402         range->max_rts = 2347;
2403         range->min_frag = 256;
2404         range->max_frag = 2346;
2405
2406         range->encoding_size[0] = 5;
2407         range->encoding_size[1] = 13;
2408         range->num_encoding_sizes = 2;
2409         range->max_encoding_tokens = 4;
2410
2411         range->pmp_flags = IW_POWER_ON;
2412         range->pmt_flags = IW_POWER_ON;
2413         range->pm_capa = 0;
2414
2415         range->we_version_source = WIRELESS_EXT;
2416         range->we_version_compiled = WIRELESS_EXT;
2417         range->retry_capa = IW_RETRY_LIMIT ;
2418         range->retry_flags = IW_RETRY_LIMIT;
2419         range->r_time_flags = 0;
2420         range->min_retry = 1;
2421         range->max_retry = 65535;
2422
2423         return 0;
2424 }
2425
2426 static int atmel_set_wap(struct net_device *dev,
2427                          struct iw_request_info *info,
2428                          struct sockaddr *awrq,
2429                          char *extra)
2430 {
2431         struct atmel_private *priv = netdev_priv(dev);
2432         int i;
2433         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2434         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2435         unsigned long flags;
2436
2437         if (awrq->sa_family != ARPHRD_ETHER)
2438                 return -EINVAL;
2439
2440         if (!memcmp(any, awrq->sa_data, 6) ||
2441             !memcmp(off, awrq->sa_data, 6)) {
2442                 del_timer_sync(&priv->management_timer);
2443                 spin_lock_irqsave(&priv->irqlock, flags);
2444                 atmel_scan(priv, 1);
2445                 spin_unlock_irqrestore(&priv->irqlock, flags);
2446                 return 0;
2447         }
2448
2449         for (i = 0; i < priv->BSS_list_entries; i++) {
2450                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2451                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2452                                 return -EINVAL;
2453                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2454                                 return -EINVAL;
2455                         } else {
2456                                 del_timer_sync(&priv->management_timer);
2457                                 spin_lock_irqsave(&priv->irqlock, flags);
2458                                 atmel_join_bss(priv, i);
2459                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2460                                 return 0;
2461                         }
2462                 }
2463         }
2464
2465         return -EINVAL;
2466 }
2467
2468 static int atmel_config_commit(struct net_device *dev,
2469                                struct iw_request_info *info,    /* NULL */
2470                                void *zwrq,                      /* NULL */
2471                                char *extra)                     /* NULL */
2472 {
2473         return atmel_open(dev);
2474 }
2475
2476 static const iw_handler atmel_handler[] =
2477 {
2478         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2479         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2480         (iw_handler) NULL,                      /* SIOCSIWNWID */
2481         (iw_handler) NULL,                      /* SIOCGIWNWID */
2482         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2483         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2484         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2485         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2486         (iw_handler) NULL,                      /* SIOCSIWSENS */
2487         (iw_handler) NULL,                      /* SIOCGIWSENS */
2488         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2489         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2490         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2491         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2492         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2493         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2494         (iw_handler) NULL,                      /* SIOCSIWSPY */
2495         (iw_handler) NULL,                      /* SIOCGIWSPY */
2496         (iw_handler) NULL,                      /* -- hole -- */
2497         (iw_handler) NULL,                      /* -- hole -- */
2498         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2499         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2500         (iw_handler) NULL,                      /* -- hole -- */
2501         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2502         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2503         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2504         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2505         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2506         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2507         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2508         (iw_handler) NULL,                      /* -- hole -- */
2509         (iw_handler) NULL,                      /* -- hole -- */
2510         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2511         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2512         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2513         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2514         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2515         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2516         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2517         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2518         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2519         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2520         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2521         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2522         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2523         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2524         (iw_handler) NULL,                      /* -- hole -- */
2525         (iw_handler) NULL,                      /* -- hole -- */
2526         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2527         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2528         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2529         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2530         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2531         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2532         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2533 };
2534
2535 static const iw_handler atmel_private_handler[] =
2536 {
2537         NULL,                           /* SIOCIWFIRSTPRIV */
2538 };
2539
2540 typedef struct atmel_priv_ioctl {
2541         char id[32];
2542         unsigned char __user *data;
2543         unsigned short len;
2544 } atmel_priv_ioctl;
2545
2546 #define ATMELFWL        SIOCIWFIRSTPRIV
2547 #define ATMELIDIFC      ATMELFWL + 1
2548 #define ATMELRD         ATMELFWL + 2
2549 #define ATMELMAGIC 0x51807
2550 #define REGDOMAINSZ 20
2551
2552 static const struct iw_priv_args atmel_private_args[] = {
2553         {
2554                 .cmd = ATMELFWL,
2555                 .set_args = IW_PRIV_TYPE_BYTE
2556                                 | IW_PRIV_SIZE_FIXED
2557                                 | sizeof (atmel_priv_ioctl),
2558                 .get_args = IW_PRIV_TYPE_NONE,
2559                 .name = "atmelfwl"
2560         }, {
2561                 .cmd = ATMELIDIFC,
2562                 .set_args = IW_PRIV_TYPE_NONE,
2563                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2564                 .name = "atmelidifc"
2565         }, {
2566                 .cmd = ATMELRD,
2567                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2568                 .get_args = IW_PRIV_TYPE_NONE,
2569                 .name = "regdomain"
2570         },
2571 };
2572
2573 static const struct iw_handler_def atmel_handler_def =
2574 {
2575         .num_standard   = ARRAY_SIZE(atmel_handler),
2576         .num_private    = ARRAY_SIZE(atmel_private_handler),
2577         .num_private_args = ARRAY_SIZE(atmel_private_args),
2578         .standard       = (iw_handler *) atmel_handler,
2579         .private        = (iw_handler *) atmel_private_handler,
2580         .private_args   = (struct iw_priv_args *) atmel_private_args,
2581         .get_wireless_stats = atmel_get_wireless_stats
2582 };
2583
2584 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2585 {
2586         int i, rc = 0;
2587         struct atmel_private *priv = netdev_priv(dev);
2588         atmel_priv_ioctl com;
2589         struct iwreq *wrq = (struct iwreq *) rq;
2590         unsigned char *new_firmware;
2591         char domain[REGDOMAINSZ + 1];
2592
2593         switch (cmd) {
2594         case ATMELIDIFC:
2595                 wrq->u.param.value = ATMELMAGIC;
2596                 break;
2597
2598         case ATMELFWL:
2599                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2600                         rc = -EFAULT;
2601                         break;
2602                 }
2603
2604                 if (!capable(CAP_NET_ADMIN)) {
2605                         rc = -EPERM;
2606                         break;
2607                 }
2608
2609                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2610                         rc = -ENOMEM;
2611                         break;
2612                 }
2613
2614                 if (copy_from_user(new_firmware, com.data, com.len)) {
2615                         kfree(new_firmware);
2616                         rc = -EFAULT;
2617                         break;
2618                 }
2619
2620                 kfree(priv->firmware);
2621
2622                 priv->firmware = new_firmware;
2623                 priv->firmware_length = com.len;
2624                 strncpy(priv->firmware_id, com.id, 31);
2625                 priv->firmware_id[31] = '\0';
2626                 break;
2627
2628         case ATMELRD:
2629                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2630                         rc = -EFAULT;
2631                         break;
2632                 }
2633
2634                 if (!capable(CAP_NET_ADMIN)) {
2635                         rc = -EPERM;
2636                         break;
2637                 }
2638
2639                 domain[REGDOMAINSZ] = 0;
2640                 rc = -EINVAL;
2641                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2642                         /* strcasecmp doesn't exist in the library */
2643                         char *a = channel_table[i].name;
2644                         char *b = domain;
2645                         while (*a) {
2646                                 char c1 = *a++;
2647                                 char c2 = *b++;
2648                                 if (tolower(c1) != tolower(c2))
2649                                         break;
2650                         }
2651                         if (!*a && !*b) {
2652                                 priv->config_reg_domain = channel_table[i].reg_domain;
2653                                 rc = 0;
2654                         }
2655                 }
2656
2657                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2658                         rc = atmel_open(dev);
2659                 break;
2660
2661         default:
2662                 rc = -EOPNOTSUPP;
2663         }
2664
2665         return rc;
2666 }
2667
2668 struct auth_body {
2669         __le16 alg;
2670         __le16 trans_seq;
2671         __le16 status;
2672         u8 el_id;
2673         u8 chall_text_len;
2674         u8 chall_text[253];
2675 };
2676
2677 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2678 {
2679         int old_state = priv->station_state;
2680
2681         if (new_state == old_state)
2682                 return;
2683
2684         priv->station_state = new_state;
2685
2686         if (new_state == STATION_STATE_READY) {
2687                 netif_start_queue(priv->dev);
2688                 netif_carrier_on(priv->dev);
2689         }
2690
2691         if (old_state == STATION_STATE_READY) {
2692                 netif_carrier_off(priv->dev);
2693                 if (netif_running(priv->dev))
2694                         netif_stop_queue(priv->dev);
2695                 priv->last_beacon_timestamp = 0;
2696         }
2697 }
2698
2699 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2700 {
2701         struct {
2702                 u8 BSSID[6];
2703                 u8 SSID[MAX_SSID_LENGTH];
2704                 u8 scan_type;
2705                 u8 channel;
2706                 __le16 BSS_type;
2707                 __le16 min_channel_time;
2708                 __le16 max_channel_time;
2709                 u8 options;
2710                 u8 SSID_size;
2711         } cmd;
2712
2713         memset(cmd.BSSID, 0xff, 6);
2714
2715         if (priv->fast_scan) {
2716                 cmd.SSID_size = priv->SSID_size;
2717                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2718                 cmd.min_channel_time = cpu_to_le16(10);
2719                 cmd.max_channel_time = cpu_to_le16(50);
2720         } else {
2721                 priv->BSS_list_entries = 0;
2722                 cmd.SSID_size = 0;
2723                 cmd.min_channel_time = cpu_to_le16(10);
2724                 cmd.max_channel_time = cpu_to_le16(120);
2725         }
2726
2727         cmd.options = 0;
2728
2729         if (!specific_ssid)
2730                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2731
2732         cmd.channel = (priv->channel & 0x7f);
2733         cmd.scan_type = SCAN_TYPE_ACTIVE;
2734         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2735                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2736
2737         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2738
2739         /* This must come after all hardware access to avoid being messed up
2740            by stuff happening in interrupt context after we leave STATE_DOWN */
2741         atmel_enter_state(priv, STATION_STATE_SCANNING);
2742 }
2743
2744 static void join(struct atmel_private *priv, int type)
2745 {
2746         struct {
2747                 u8 BSSID[6];
2748                 u8 SSID[MAX_SSID_LENGTH];
2749                 u8 BSS_type; /* this is a short in a scan command - weird */
2750                 u8 channel;
2751                 __le16 timeout;
2752                 u8 SSID_size;
2753                 u8 reserved;
2754         } cmd;
2755
2756         cmd.SSID_size = priv->SSID_size;
2757         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2758         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2759         cmd.channel = (priv->channel & 0x7f);
2760         cmd.BSS_type = type;
2761         cmd.timeout = cpu_to_le16(2000);
2762
2763         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2764 }
2765
2766 static void start(struct atmel_private *priv, int type)
2767 {
2768         struct {
2769                 u8 BSSID[6];
2770                 u8 SSID[MAX_SSID_LENGTH];
2771                 u8 BSS_type;
2772                 u8 channel;
2773                 u8 SSID_size;
2774                 u8 reserved[3];
2775         } cmd;
2776
2777         cmd.SSID_size = priv->SSID_size;
2778         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2779         memcpy(cmd.BSSID, priv->BSSID, 6);
2780         cmd.BSS_type = type;
2781         cmd.channel = (priv->channel & 0x7f);
2782
2783         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2784 }
2785
2786 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2787                                 u8 channel)
2788 {
2789         int rejoin = 0;
2790         int new = capability & MFIE_TYPE_POWER_CONSTRAINT ?
2791                 SHORT_PREAMBLE : LONG_PREAMBLE;
2792
2793         if (priv->preamble != new) {
2794                 priv->preamble = new;
2795                 rejoin = 1;
2796                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2797         }
2798
2799         if (priv->channel != channel) {
2800                 priv->channel = channel;
2801                 rejoin = 1;
2802                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2803         }
2804
2805         if (rejoin) {
2806                 priv->station_is_associated = 0;
2807                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2808
2809                 if (priv->operating_mode == IW_MODE_INFRA)
2810                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2811                 else
2812                         join(priv, BSS_TYPE_AD_HOC);
2813         }
2814 }
2815
2816 static void send_authentication_request(struct atmel_private *priv, u16 system,
2817                                         u8 *challenge, int challenge_len)
2818 {
2819         struct ieee80211_hdr_4addr header;
2820         struct auth_body auth;
2821
2822         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2823         header.duration_id = cpu_to_le16(0x8000);
2824         header.seq_ctl = 0;
2825         memcpy(header.addr1, priv->CurrentBSSID, 6);
2826         memcpy(header.addr2, priv->dev->dev_addr, 6);
2827         memcpy(header.addr3, priv->CurrentBSSID, 6);
2828
2829         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2830                 /* no WEP for authentication frames with TrSeqNo 1 */
2831                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2832
2833         auth.alg = cpu_to_le16(system);
2834
2835         auth.status = 0;
2836         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2837         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2838         priv->CurrentAuthentTransactionSeqNum += 2;
2839
2840         if (challenge_len != 0) {
2841                 auth.el_id = 16; /* challenge_text */
2842                 auth.chall_text_len = challenge_len;
2843                 memcpy(auth.chall_text, challenge, challenge_len);
2844                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2845         } else {
2846                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2847         }
2848 }
2849
2850 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2851 {
2852         u8 *ssid_el_p;
2853         int bodysize;
2854         struct ieee80211_hdr_4addr header;
2855         struct ass_req_format {
2856                 __le16 capability;
2857                 __le16 listen_interval;
2858                 u8 ap[6]; /* nothing after here directly accessible */
2859                 u8 ssid_el_id;
2860                 u8 ssid_len;
2861                 u8 ssid[MAX_SSID_LENGTH];
2862                 u8 sup_rates_el_id;
2863                 u8 sup_rates_len;
2864                 u8 rates[4];
2865         } body;
2866
2867         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2868                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2869         header.duration_id = cpu_to_le16(0x8000);
2870         header.seq_ctl = 0;
2871
2872         memcpy(header.addr1, priv->CurrentBSSID, 6);
2873         memcpy(header.addr2, priv->dev->dev_addr, 6);
2874         memcpy(header.addr3, priv->CurrentBSSID, 6);
2875
2876         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2877         if (priv->wep_is_on)
2878                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2879         if (priv->preamble == SHORT_PREAMBLE)
2880                 body.capability |= cpu_to_le16(MFIE_TYPE_POWER_CONSTRAINT);
2881
2882         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2883
2884         /* current AP address - only in reassoc frame */
2885         if (is_reassoc) {
2886                 memcpy(body.ap, priv->CurrentBSSID, 6);
2887                 ssid_el_p = (u8 *)&body.ssid_el_id;
2888                 bodysize = 18 + priv->SSID_size;
2889         } else {
2890                 ssid_el_p = (u8 *)&body.ap[0];
2891                 bodysize = 12 + priv->SSID_size;
2892         }
2893
2894         ssid_el_p[0] = MFIE_TYPE_SSID;
2895         ssid_el_p[1] = priv->SSID_size;
2896         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2897         ssid_el_p[2 + priv->SSID_size] = MFIE_TYPE_RATES;
2898         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2899         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2900
2901         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2902 }
2903
2904 static int is_frame_from_current_bss(struct atmel_private *priv,
2905                                      struct ieee80211_hdr_4addr *header)
2906 {
2907         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2908                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2909         else
2910                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2911 }
2912
2913 static int retrieve_bss(struct atmel_private *priv)
2914 {
2915         int i;
2916         int max_rssi = -128;
2917         int max_index = -1;
2918
2919         if (priv->BSS_list_entries == 0)
2920                 return -1;
2921
2922         if (priv->connect_to_any_BSS) {
2923                 /* Select a BSS with the max-RSSI but of the same type and of
2924                    the same WEP mode and that it is not marked as 'bad' (i.e.
2925                    we had previously failed to connect to this BSS with the
2926                    settings that we currently use) */
2927                 priv->current_BSS = 0;
2928                 for (i = 0; i < priv->BSS_list_entries; i++) {
2929                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2930                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2931                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2932                             !(priv->BSSinfo[i].channel & 0x80)) {
2933                                 max_rssi = priv->BSSinfo[i].RSSI;
2934                                 priv->current_BSS = max_index = i;
2935                         }
2936                 }
2937                 return max_index;
2938         }
2939
2940         for (i = 0; i < priv->BSS_list_entries; i++) {
2941                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2942                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2943                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2944                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2945                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2946                                 max_rssi = priv->BSSinfo[i].RSSI;
2947                                 max_index = i;
2948                         }
2949                 }
2950         }
2951         return max_index;
2952 }
2953
2954 static void store_bss_info(struct atmel_private *priv,
2955                            struct ieee80211_hdr_4addr *header, u16 capability,
2956                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2957                            u8 *ssid, int is_beacon)
2958 {
2959         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2960         int i, index;
2961
2962         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2963                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2964                         index = i;
2965
2966         /* If we process a probe and an entry from this BSS exists
2967            we will update the BSS entry with the info from this BSS.
2968            If we process a beacon we will only update RSSI */
2969
2970         if (index == -1) {
2971                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2972                         return;
2973                 index = priv->BSS_list_entries++;
2974                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2975                 priv->BSSinfo[index].RSSI = rssi;
2976         } else {
2977                 if (rssi > priv->BSSinfo[index].RSSI)
2978                         priv->BSSinfo[index].RSSI = rssi;
2979                 if (is_beacon)
2980                         return;
2981         }
2982
2983         priv->BSSinfo[index].channel = channel;
2984         priv->BSSinfo[index].beacon_period = beacon_period;
2985         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2986         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2987         priv->BSSinfo[index].SSIDsize = ssid_len;
2988
2989         if (capability & WLAN_CAPABILITY_IBSS)
2990                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
2991         else if (capability & WLAN_CAPABILITY_ESS)
2992                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
2993
2994         priv->BSSinfo[index].preamble = capability & MFIE_TYPE_POWER_CONSTRAINT ?
2995                 SHORT_PREAMBLE : LONG_PREAMBLE;
2996 }
2997
2998 static void authenticate(struct atmel_private *priv, u16 frame_len)
2999 {
3000         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3001         u16 status = le16_to_cpu(auth->status);
3002         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3003         u16 system = le16_to_cpu(auth->alg);
3004
3005         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3006                 /* no WEP */
3007                 if (priv->station_was_associated) {
3008                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3009                         send_association_request(priv, 1);
3010                         return;
3011                 } else {
3012                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3013                         send_association_request(priv, 0);
3014                         return;
3015                 }
3016         }
3017
3018         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3019                 int should_associate = 0;
3020                 /* WEP */
3021                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3022                         return;
3023
3024                 if (system == WLAN_AUTH_OPEN) {
3025                         if (trans_seq_no == 0x0002) {
3026                                 should_associate = 1;
3027                         }
3028                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3029                         if (trans_seq_no == 0x0002 &&
3030                             auth->el_id == MFIE_TYPE_CHALLENGE) {
3031                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3032                                 return;
3033                         } else if (trans_seq_no == 0x0004) {
3034                                 should_associate = 1;
3035                         }
3036                 }
3037
3038                 if (should_associate) {
3039                         if(priv->station_was_associated) {
3040                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3041                                 send_association_request(priv, 1);
3042                                 return;
3043                         } else {
3044                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3045                                 send_association_request(priv, 0);
3046                                 return;
3047                         }
3048                 }
3049         }
3050
3051         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3052                 /* Do opensystem first, then try sharedkey */
3053                 if (system == WLAN_AUTH_OPEN) {
3054                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3055                         priv->exclude_unencrypted = 1;
3056                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3057                         return;
3058                 } else if (priv->connect_to_any_BSS) {
3059                         int bss_index;
3060
3061                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3062
3063                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3064                                 atmel_join_bss(priv, bss_index);
3065                                 return;
3066                         }
3067                 }
3068         }
3069
3070         priv->AuthenticationRequestRetryCnt = 0;
3071         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3072         priv->station_is_associated = 0;
3073 }
3074
3075 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3076 {
3077         struct ass_resp_format {
3078                 __le16 capability;
3079                 __le16 status;
3080                 __le16 ass_id;
3081                 u8 el_id;
3082                 u8 length;
3083                 u8 rates[4];
3084         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3085
3086         u16 status = le16_to_cpu(ass_resp->status);
3087         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3088         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3089
3090         union iwreq_data wrqu;
3091
3092         if (frame_len < 8 + rates_len)
3093                 return;
3094
3095         if (status == WLAN_STATUS_SUCCESS) {
3096                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3097                         priv->AssociationRequestRetryCnt = 0;
3098                 else
3099                         priv->ReAssociationRequestRetryCnt = 0;
3100
3101                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3102                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3103                 atmel_set_mib(priv, Phy_Mib_Type,
3104                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3105                 if (priv->power_mode == 0) {
3106                         priv->listen_interval = 1;
3107                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3108                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3109                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3110                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3111                 } else {
3112                         priv->listen_interval = 2;
3113                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3114                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3115                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3116                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3117                 }
3118
3119                 priv->station_is_associated = 1;
3120                 priv->station_was_associated = 1;
3121                 atmel_enter_state(priv, STATION_STATE_READY);
3122
3123                 /* Send association event to userspace */
3124                 wrqu.data.length = 0;
3125                 wrqu.data.flags = 0;
3126                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3127                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3128                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3129
3130                 return;
3131         }
3132
3133         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3134             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3135             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3136             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3137                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3138                 priv->AssociationRequestRetryCnt++;
3139                 send_association_request(priv, 0);
3140                 return;
3141         }
3142
3143         if (subtype == IEEE80211_STYPE_REASSOC_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->ReAssociationRequestRetryCnt++;
3149                 send_association_request(priv, 1);
3150                 return;
3151         }
3152
3153         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3154         priv->station_is_associated = 0;
3155
3156         if (priv->connect_to_any_BSS) {
3157                 int bss_index;
3158                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3159
3160                 if ((bss_index = retrieve_bss(priv)) != -1)
3161                         atmel_join_bss(priv, bss_index);
3162         }
3163 }
3164
3165 void atmel_join_bss(struct atmel_private *priv, int bss_index)
3166 {
3167         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3168
3169         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3170         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3171
3172         /* The WPA stuff cares about the current AP address */
3173         if (priv->use_wpa)
3174                 build_wpa_mib(priv);
3175
3176         /* When switching to AdHoc turn OFF Power Save if needed */
3177
3178         if (bss->BSStype == IW_MODE_ADHOC &&
3179             priv->operating_mode != IW_MODE_ADHOC &&
3180             priv->power_mode) {
3181                 priv->power_mode = 0;
3182                 priv->listen_interval = 1;
3183                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3184                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3185                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3186                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3187         }
3188
3189         priv->operating_mode = bss->BSStype;
3190         priv->channel = bss->channel & 0x7f;
3191         priv->beacon_period = bss->beacon_period;
3192
3193         if (priv->preamble != bss->preamble) {
3194                 priv->preamble = bss->preamble;
3195                 atmel_set_mib8(priv, Local_Mib_Type,
3196                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3197         }
3198
3199         if (!priv->wep_is_on && bss->UsingWEP) {
3200                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3201                 priv->station_is_associated = 0;
3202                 return;
3203         }
3204
3205         if (priv->wep_is_on && !bss->UsingWEP) {
3206                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3207                 priv->station_is_associated = 0;
3208                 return;
3209         }
3210
3211         atmel_enter_state(priv, STATION_STATE_JOINNING);
3212
3213         if (priv->operating_mode == IW_MODE_INFRA)
3214                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3215         else
3216                 join(priv, BSS_TYPE_AD_HOC);
3217 }
3218
3219 static void restart_search(struct atmel_private *priv)
3220 {
3221         int bss_index;
3222
3223         if (!priv->connect_to_any_BSS) {
3224                 atmel_scan(priv, 1);
3225         } else {
3226                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3227
3228                 if ((bss_index = retrieve_bss(priv)) != -1)
3229                         atmel_join_bss(priv, bss_index);
3230                 else
3231                         atmel_scan(priv, 0);
3232         }
3233 }
3234
3235 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3236 {
3237         u8 old = priv->wstats.qual.level;
3238         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3239
3240         switch (priv->firmware_type) {
3241                 case ATMEL_FW_TYPE_502E:
3242                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3243                         break;
3244                 default:
3245                         break;
3246         }
3247
3248         rssi = rssi * 100 / max_rssi;
3249         if ((rssi + old) % 2)
3250                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3251         else
3252                 priv->wstats.qual.level = (rssi + old) / 2;
3253         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3254         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3255 }
3256
3257 static void atmel_smooth_qual(struct atmel_private *priv)
3258 {
3259         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3260         while (time_diff--) {
3261                 priv->last_qual += HZ;
3262                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3263                 priv->wstats.qual.qual +=
3264                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3265                 priv->beacons_this_sec = 0;
3266         }
3267         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3268         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3269 }
3270
3271 /* deals with incoming managment frames. */
3272 static void atmel_management_frame(struct atmel_private *priv,
3273                                    struct ieee80211_hdr_4addr *header,
3274                                    u16 frame_len, u8 rssi)
3275 {
3276         u16 subtype;
3277
3278         subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
3279         switch (subtype) {
3280         case IEEE80211_STYPE_BEACON:
3281         case IEEE80211_STYPE_PROBE_RESP:
3282
3283                 /* beacon frame has multiple variable-length fields -
3284                    never let an engineer loose with a data structure design. */
3285                 {
3286                         struct beacon_format {
3287                                 __le64 timestamp;
3288                                 __le16 interval;
3289                                 __le16 capability;
3290                                 u8 ssid_el_id;
3291                                 u8 ssid_length;
3292                                 /* ssid here */
3293                                 u8 rates_el_id;
3294                                 u8 rates_length;
3295                                 /* rates here */
3296                                 u8 ds_el_id;
3297                                 u8 ds_length;
3298                                 /* ds here */
3299                         } *beacon = (struct beacon_format *)priv->rx_buf;
3300
3301                         u8 channel, rates_length, ssid_length;
3302                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3303                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3304                         u16 capability = le16_to_cpu(beacon->capability);
3305                         u8 *beaconp = priv->rx_buf;
3306                         ssid_length = beacon->ssid_length;
3307                         /* this blows chunks. */
3308                         if (frame_len < 14 || frame_len < ssid_length + 15)
3309                                 return;
3310                         rates_length = beaconp[beacon->ssid_length + 15];
3311                         if (frame_len < ssid_length + rates_length + 18)
3312                                 return;
3313                         if (ssid_length >  MAX_SSID_LENGTH)
3314                                 return;
3315                         channel = beaconp[ssid_length + rates_length + 18];
3316
3317                         if (priv->station_state == STATION_STATE_READY) {
3318                                 smooth_rssi(priv, rssi);
3319                                 if (is_frame_from_current_bss(priv, header)) {
3320                                         priv->beacons_this_sec++;
3321                                         atmel_smooth_qual(priv);
3322                                         if (priv->last_beacon_timestamp) {
3323                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3324                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3325                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3326                                                 if (beacons > 1)
3327                                                         priv->wstats.miss.beacon += beacons - 1;
3328                                         }
3329                                         priv->last_beacon_timestamp = timestamp;
3330                                         handle_beacon_probe(priv, capability, channel);
3331                                 }
3332                         }
3333
3334                         if (priv->station_state == STATION_STATE_SCANNING)
3335                                 store_bss_info(priv, header, capability,
3336                                                beacon_interval, channel, rssi,
3337                                                ssid_length,
3338                                                &beacon->rates_el_id,
3339                                                subtype == IEEE80211_STYPE_BEACON);
3340                 }
3341                 break;
3342
3343         case IEEE80211_STYPE_AUTH:
3344
3345                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3346                         authenticate(priv, frame_len);
3347
3348                 break;
3349
3350         case IEEE80211_STYPE_ASSOC_RESP:
3351         case IEEE80211_STYPE_REASSOC_RESP:
3352
3353                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3354                     priv->station_state == STATION_STATE_REASSOCIATING)
3355                         associate(priv, frame_len, subtype);
3356
3357                 break;
3358
3359         case IEEE80211_STYPE_DISASSOC:
3360                 if (priv->station_is_associated &&
3361                     priv->operating_mode == IW_MODE_INFRA &&
3362                     is_frame_from_current_bss(priv, header)) {
3363                         priv->station_was_associated = 0;
3364                         priv->station_is_associated = 0;
3365
3366                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3367                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3368                 }
3369
3370                 break;
3371
3372         case IEEE80211_STYPE_DEAUTH:
3373                 if (priv->operating_mode == IW_MODE_INFRA &&
3374                     is_frame_from_current_bss(priv, header)) {
3375                         priv->station_was_associated = 0;
3376
3377                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3378                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3379                 }
3380
3381                 break;
3382         }
3383 }
3384
3385 /* run when timer expires */
3386 static void atmel_management_timer(u_long a)
3387 {
3388         struct net_device *dev = (struct net_device *) a;
3389         struct atmel_private *priv = netdev_priv(dev);
3390         unsigned long flags;
3391
3392         /* Check if the card has been yanked. */
3393         if (priv->card && priv->present_callback &&
3394                 !(*priv->present_callback)(priv->card))
3395                 return;
3396
3397         spin_lock_irqsave(&priv->irqlock, flags);
3398
3399         switch (priv->station_state) {
3400
3401         case STATION_STATE_AUTHENTICATING:
3402                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3403                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3404                         priv->station_is_associated = 0;
3405                         priv->AuthenticationRequestRetryCnt = 0;
3406                         restart_search(priv);
3407                 } else {
3408                         int auth = WLAN_AUTH_OPEN;
3409                         priv->AuthenticationRequestRetryCnt++;
3410                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3411                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3412                         if (priv->wep_is_on && priv->exclude_unencrypted)
3413                                 auth = WLAN_AUTH_SHARED_KEY;
3414                         send_authentication_request(priv, auth, NULL, 0);
3415           }
3416           break;
3417
3418         case STATION_STATE_ASSOCIATING:
3419                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3420                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3421                         priv->station_is_associated = 0;
3422                         priv->AssociationRequestRetryCnt = 0;
3423                         restart_search(priv);
3424                 } else {
3425                         priv->AssociationRequestRetryCnt++;
3426                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3427                         send_association_request(priv, 0);
3428                 }
3429           break;
3430
3431         case STATION_STATE_REASSOCIATING:
3432                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3433                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3434                         priv->station_is_associated = 0;
3435                         priv->ReAssociationRequestRetryCnt = 0;
3436                         restart_search(priv);
3437                 } else {
3438                         priv->ReAssociationRequestRetryCnt++;
3439                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3440                         send_association_request(priv, 1);
3441                 }
3442                 break;
3443
3444         default:
3445                 break;
3446         }
3447
3448         spin_unlock_irqrestore(&priv->irqlock, flags);
3449 }
3450
3451 static void atmel_command_irq(struct atmel_private *priv)
3452 {
3453         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3454         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3455         int fast_scan;
3456         union iwreq_data wrqu;
3457
3458         if (status == CMD_STATUS_IDLE ||
3459             status == CMD_STATUS_IN_PROGRESS)
3460                 return;
3461
3462         switch (command){
3463
3464         case CMD_Start:
3465                 if (status == CMD_STATUS_COMPLETE) {
3466                         priv->station_was_associated = priv->station_is_associated;
3467                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3468                                       (u8 *)priv->CurrentBSSID, 6);
3469                         atmel_enter_state(priv, STATION_STATE_READY);
3470                 }
3471                 break;
3472
3473         case CMD_Scan:
3474                 fast_scan = priv->fast_scan;
3475                 priv->fast_scan = 0;
3476
3477                 if (status != CMD_STATUS_COMPLETE) {
3478                         atmel_scan(priv, 1);
3479                 } else {
3480                         int bss_index = retrieve_bss(priv);
3481                         int notify_scan_complete = 1;
3482                         if (bss_index != -1) {
3483                                 atmel_join_bss(priv, bss_index);
3484                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3485                                    priv->SSID_size != 0) {
3486                                 start(priv, BSS_TYPE_AD_HOC);
3487                         } else {
3488                                 priv->fast_scan = !fast_scan;
3489                                 atmel_scan(priv, 1);
3490                                 notify_scan_complete = 0;
3491                         }
3492                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3493                         if (notify_scan_complete) {
3494                                 wrqu.data.length = 0;
3495                                 wrqu.data.flags = 0;
3496                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3497                         }
3498                 }
3499                 break;
3500
3501         case CMD_SiteSurvey:
3502                 priv->fast_scan = 0;
3503
3504                 if (status != CMD_STATUS_COMPLETE)
3505                         return;
3506
3507                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3508                 if (priv->station_is_associated) {
3509                         atmel_enter_state(priv, STATION_STATE_READY);
3510                         wrqu.data.length = 0;
3511                         wrqu.data.flags = 0;
3512                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3513                 } else {
3514                         atmel_scan(priv, 1);
3515                 }
3516                 break;
3517
3518         case CMD_Join:
3519                 if (status == CMD_STATUS_COMPLETE) {
3520                         if (priv->operating_mode == IW_MODE_ADHOC) {
3521                                 priv->station_was_associated = priv->station_is_associated;
3522                                 atmel_enter_state(priv, STATION_STATE_READY);
3523                         } else {
3524                                 int auth = WLAN_AUTH_OPEN;
3525                                 priv->AuthenticationRequestRetryCnt = 0;
3526                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3527
3528                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3529                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3530                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3531                                         auth = WLAN_AUTH_SHARED_KEY;
3532                                 send_authentication_request(priv, auth, NULL, 0);
3533                         }
3534                         return;
3535                 }
3536
3537                 atmel_scan(priv, 1);
3538         }
3539 }
3540
3541 static int atmel_wakeup_firmware(struct atmel_private *priv)
3542 {
3543         struct host_info_struct *iface = &priv->host_info;
3544         u16 mr1, mr3;
3545         int i;
3546
3547         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3548                 atmel_set_gcr(priv->dev, GCR_REMAP);
3549
3550         /* wake up on-board processor */
3551         atmel_clear_gcr(priv->dev, 0x0040);
3552         atmel_write16(priv->dev, BSR, BSS_SRAM);
3553
3554         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3555                 mdelay(100);
3556
3557         /* and wait for it */
3558         for (i = LOOP_RETRY_LIMIT; i; i--) {
3559                 mr1 = atmel_read16(priv->dev, MR1);
3560                 mr3 = atmel_read16(priv->dev, MR3);
3561
3562                 if (mr3 & MAC_BOOT_COMPLETE)
3563                         break;
3564                 if (mr1 & MAC_BOOT_COMPLETE &&
3565                     priv->bus_type == BUS_TYPE_PCCARD)
3566                         break;
3567         }
3568
3569         if (i == 0) {
3570                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3571                 return 0;
3572         }
3573
3574         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3575                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3576                 return 0;
3577         }
3578
3579         /* now check for completion of MAC initialization through
3580            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3581            MAC initialization, check completion status, set interrupt mask,
3582            enables interrupts and calls Tx and Rx initialization functions */
3583
3584         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3585
3586         for (i = LOOP_RETRY_LIMIT; i; i--) {
3587                 mr1 = atmel_read16(priv->dev, MR1);
3588                 mr3 = atmel_read16(priv->dev, MR3);
3589
3590                 if (mr3 & MAC_INIT_COMPLETE)
3591                         break;
3592                 if (mr1 & MAC_INIT_COMPLETE &&
3593                     priv->bus_type == BUS_TYPE_PCCARD)
3594                         break;
3595         }
3596
3597         if (i == 0) {
3598                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3599                                 priv->dev->name);
3600                 return 0;
3601         }
3602
3603         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3604         if ((mr3 & MAC_INIT_COMPLETE) &&
3605             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3606                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3607                 return 0;
3608         }
3609         if ((mr1 & MAC_INIT_COMPLETE) &&
3610             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3611                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3612                 return 0;
3613         }
3614
3615         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3616                            priv->host_info_base, sizeof(*iface));
3617
3618         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3619         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3620         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3621         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3622         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3623         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3624         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3625         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3626         iface->build_version = le16_to_cpu(iface->build_version);
3627         iface->command_pos = le16_to_cpu(iface->command_pos);
3628         iface->major_version = le16_to_cpu(iface->major_version);
3629         iface->minor_version = le16_to_cpu(iface->minor_version);
3630         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3631         iface->mac_status = le16_to_cpu(iface->mac_status);
3632
3633         return 1;
3634 }
3635
3636 /* determine type of memory and MAC address */
3637 static int probe_atmel_card(struct net_device *dev)
3638 {
3639         int rc = 0;
3640         struct atmel_private *priv = netdev_priv(dev);
3641
3642         /* reset pccard */
3643         if (priv->bus_type == BUS_TYPE_PCCARD)
3644                 atmel_write16(dev, GCR, 0x0060);
3645
3646         atmel_write16(dev, GCR, 0x0040);
3647         mdelay(500);
3648
3649         if (atmel_read16(dev, MR2) == 0) {
3650                 /* No stored firmware so load a small stub which just
3651                    tells us the MAC address */
3652                 int i;
3653                 priv->card_type = CARD_TYPE_EEPROM;
3654                 atmel_write16(dev, BSR, BSS_IRAM);
3655                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3656                 atmel_set_gcr(dev, GCR_REMAP);
3657                 atmel_clear_gcr(priv->dev, 0x0040);
3658                 atmel_write16(dev, BSR, BSS_SRAM);
3659                 for (i = LOOP_RETRY_LIMIT; i; i--)
3660                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3661                                 break;
3662                 if (i == 0) {
3663                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3664                 } else {
3665                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3666                         /* got address, now squash it again until the network
3667                            interface is opened */
3668                         if (priv->bus_type == BUS_TYPE_PCCARD)
3669                                 atmel_write16(dev, GCR, 0x0060);
3670                         atmel_write16(dev, GCR, 0x0040);
3671                         rc = 1;
3672                 }
3673         } else if (atmel_read16(dev, MR4) == 0) {
3674                 /* Mac address easy in this case. */
3675                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3676                 atmel_write16(dev,  BSR, 1);
3677                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3678                 atmel_write16(dev,  BSR, 0x200);
3679                 rc = 1;
3680         } else {
3681                 /* Standard firmware in flash, boot it up and ask
3682                    for the Mac Address */
3683                 priv->card_type = CARD_TYPE_SPI_FLASH;
3684                 if (atmel_wakeup_firmware(priv)) {
3685                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3686
3687                         /* got address, now squash it again until the network
3688                            interface is opened */
3689                         if (priv->bus_type == BUS_TYPE_PCCARD)
3690                                 atmel_write16(dev, GCR, 0x0060);
3691                         atmel_write16(dev, GCR, 0x0040);
3692                         rc = 1;
3693                 }
3694         }
3695
3696         if (rc) {
3697                 if (dev->dev_addr[0] == 0xFF) {
3698                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3699                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3700                         memcpy(dev->dev_addr, default_mac, 6);
3701                 }
3702         }
3703
3704         return rc;
3705 }
3706
3707 /* Move the encyption information on the MIB structure.
3708    This routine is for the pre-WPA firmware: later firmware has
3709    a different format MIB and a different routine. */
3710 static void build_wep_mib(struct atmel_private *priv)
3711 {
3712         struct { /* NB this is matched to the hardware, don't change. */
3713                 u8 wep_is_on;
3714                 u8 default_key; /* 0..3 */
3715                 u8 reserved;
3716                 u8 exclude_unencrypted;
3717
3718                 u32 WEPICV_error_count;
3719                 u32 WEP_excluded_count;
3720
3721                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3722                 u8 encryption_level; /* 0, 1, 2 */
3723                 u8 reserved2[3];
3724         } mib;
3725         int i;
3726
3727         mib.wep_is_on = priv->wep_is_on;
3728         if (priv->wep_is_on) {
3729                 if (priv->wep_key_len[priv->default_key] > 5)
3730                         mib.encryption_level = 2;
3731                 else
3732                         mib.encryption_level = 1;
3733         } else {
3734                 mib.encryption_level = 0;
3735         }
3736
3737         mib.default_key = priv->default_key;
3738         mib.exclude_unencrypted = priv->exclude_unencrypted;
3739
3740         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3741                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3742
3743         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3744 }
3745
3746 static void build_wpa_mib(struct atmel_private *priv)
3747 {
3748         /* This is for the later (WPA enabled) firmware. */
3749
3750         struct { /* NB this is matched to the hardware, don't change. */
3751                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3752                 u8 receiver_address[6];
3753                 u8 wep_is_on;
3754                 u8 default_key; /* 0..3 */
3755                 u8 group_key;
3756                 u8 exclude_unencrypted;
3757                 u8 encryption_type;
3758                 u8 reserved;
3759
3760                 u32 WEPICV_error_count;
3761                 u32 WEP_excluded_count;
3762
3763                 u8 key_RSC[4][8];
3764         } mib;
3765
3766         int i;
3767
3768         mib.wep_is_on = priv->wep_is_on;
3769         mib.exclude_unencrypted = priv->exclude_unencrypted;
3770         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3771
3772         /* zero all the keys before adding in valid ones. */
3773         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3774
3775         if (priv->wep_is_on) {
3776                 /* There's a comment in the Atmel code to the effect that this
3777                    is only valid when still using WEP, it may need to be set to
3778                    something to use WPA */
3779                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3780
3781                 mib.default_key = mib.group_key = 255;
3782                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3783                         if (priv->wep_key_len[i] > 0) {
3784                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3785                                 if (i == priv->default_key) {
3786                                         mib.default_key = i;
3787                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3788                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3789                                 } else {
3790                                         mib.group_key = i;
3791                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3792                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3793                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3794                                 }
3795                         }
3796                 }
3797                 if (mib.default_key == 255)
3798                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3799                 if (mib.group_key == 255)
3800                         mib.group_key = mib.default_key;
3801
3802         }
3803
3804         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3805 }
3806
3807 static int reset_atmel_card(struct net_device *dev)
3808 {
3809         /* do everything necessary to wake up the hardware, including
3810            waiting for the lightning strike and throwing the knife switch....
3811
3812            set all the Mib values which matter in the card to match
3813            their settings in the atmel_private structure. Some of these
3814            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3815            can only be changed by tearing down the world and coming back through
3816            here.
3817
3818            This routine is also responsible for initialising some
3819            hardware-specific fields in the atmel_private structure,
3820            including a copy of the firmware's hostinfo stucture
3821            which is the route into the rest of the firmare datastructures. */
3822
3823         struct atmel_private *priv = netdev_priv(dev);
3824         u8 configuration;
3825         int old_state = priv->station_state;
3826
3827         /* data to add to the firmware names, in priority order
3828            this implemenents firmware versioning */
3829
3830         static char *firmware_modifier[] = {
3831                 "-wpa",
3832                 "",
3833                 NULL
3834         };
3835
3836         /* reset pccard */
3837         if (priv->bus_type == BUS_TYPE_PCCARD)
3838                 atmel_write16(priv->dev, GCR, 0x0060);
3839
3840         /* stop card , disable interrupts */
3841         atmel_write16(priv->dev, GCR, 0x0040);
3842
3843         if (priv->card_type == CARD_TYPE_EEPROM) {
3844                 /* copy in firmware if needed */
3845                 const struct firmware *fw_entry = NULL;
3846                 unsigned char *fw;
3847                 int len = priv->firmware_length;
3848                 if (!(fw = priv->firmware)) {
3849                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3850                                 if (strlen(priv->firmware_id) == 0) {
3851                                         printk(KERN_INFO
3852                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3853                                                dev->name);
3854                                         printk(KERN_INFO
3855                                                "%s: if not, use the firmware= module parameter.\n",
3856                                                dev->name);
3857                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3858                                 }
3859                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3860                                         printk(KERN_ALERT
3861                                                "%s: firmware %s is missing, cannot continue.\n",
3862                                                dev->name, priv->firmware_id);
3863                                         return 0;
3864                                 }
3865                         } else {
3866                                 int fw_index = 0;
3867                                 int success = 0;
3868
3869                                 /* get firmware filename entry based on firmware type ID */
3870                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3871                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3872                                         fw_index++;
3873
3874                                 /* construct the actual firmware file name */
3875                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3876                                         int i;
3877                                         for (i = 0; firmware_modifier[i]; i++) {
3878                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3879                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3880                                                 priv->firmware_id[31] = '\0';
3881                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3882                                                         success = 1;
3883                                                         break;
3884                                                 }
3885                                         }
3886                                 }
3887                                 if (!success) {
3888                                         printk(KERN_ALERT
3889                                                "%s: firmware %s is missing, cannot start.\n",
3890                                                dev->name, priv->firmware_id);
3891                                         priv->firmware_id[0] = '\0';
3892                                         return 0;
3893                                 }
3894                         }
3895
3896                         fw = fw_entry->data;
3897                         len = fw_entry->size;
3898                 }
3899
3900                 if (len <= 0x6000) {
3901                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3902                         atmel_copy_to_card(priv->dev, 0, fw, len);
3903                         atmel_set_gcr(priv->dev, GCR_REMAP);
3904                 } else {
3905                         /* Remap */
3906                         atmel_set_gcr(priv->dev, GCR_REMAP);
3907                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3908                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3909                         atmel_write16(priv->dev, BSR, 0x2ff);
3910                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3911                 }
3912
3913                 if (fw_entry)
3914                         release_firmware(fw_entry);
3915         }
3916
3917         if (!atmel_wakeup_firmware(priv))
3918                 return 0;
3919
3920         /* Check the version and set the correct flag for wpa stuff,
3921            old and new firmware is incompatible.
3922            The pre-wpa 3com firmware reports major version 5,
3923            the wpa 3com firmware is major version 4 and doesn't need
3924            the 3com broken-ness filter. */
3925         priv->use_wpa = (priv->host_info.major_version == 4);
3926         priv->radio_on_broken = (priv->host_info.major_version == 5);
3927
3928         /* unmask all irq sources */
3929         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3930
3931         /* int Tx system and enable Tx */
3932         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3933         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3934         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3935         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3936
3937         priv->tx_desc_free = priv->host_info.tx_desc_count;
3938         priv->tx_desc_head = 0;
3939         priv->tx_desc_tail = 0;
3940         priv->tx_desc_previous = 0;
3941         priv->tx_free_mem = priv->host_info.tx_buff_size;
3942         priv->tx_buff_head = 0;
3943         priv->tx_buff_tail = 0;
3944
3945         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3946         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3947                                    configuration | FUNC_CTRL_TxENABLE);
3948
3949         /* init Rx system and enable */
3950         priv->rx_desc_head = 0;
3951
3952         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3953         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3954                                    configuration | FUNC_CTRL_RxENABLE);
3955
3956         if (!priv->radio_on_broken) {
3957                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3958                     CMD_STATUS_REJECTED_RADIO_OFF) {
3959                         printk(KERN_INFO
3960                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3961                                dev->name);
3962                         return 0;
3963                 }
3964         }
3965
3966         /* set up enough MIB values to run. */
3967         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3968         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3969         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3970         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3971         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3972         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3973         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3974         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3975                       priv->dev->dev_addr, 6);
3976         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3977         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3978         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3979         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3980         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3981         if (priv->use_wpa)
3982                 build_wpa_mib(priv);
3983         else
3984                 build_wep_mib(priv);
3985
3986         if (old_state == STATION_STATE_READY)
3987         {
3988                 union iwreq_data wrqu;
3989
3990                 wrqu.data.length = 0;
3991                 wrqu.data.flags = 0;
3992                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3993                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
3994                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3995         }
3996
3997         return 1;
3998 }
3999
4000 static void atmel_send_command(struct atmel_private *priv, int command,
4001                                void *cmd, int cmd_size)
4002 {
4003         if (cmd)
4004                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4005                                    cmd, cmd_size);
4006
4007         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4008         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4009 }
4010
4011 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4012                                    void *cmd, int cmd_size)
4013 {
4014         int i, status;
4015
4016         atmel_send_command(priv, command, cmd, cmd_size);
4017
4018         for (i = 5000; i; i--) {
4019                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4020                 if (status != CMD_STATUS_IDLE &&
4021                     status != CMD_STATUS_IN_PROGRESS)
4022                         break;
4023                 udelay(20);
4024         }
4025
4026         if (i == 0) {
4027                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4028                 status =  CMD_STATUS_HOST_ERROR;
4029         } else {
4030                 if (command != CMD_EnableRadio)
4031                         status = CMD_STATUS_COMPLETE;
4032         }
4033
4034         return status;
4035 }
4036
4037 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4038 {
4039         struct get_set_mib m;
4040         m.type = type;
4041         m.size = 1;
4042         m.index = index;
4043
4044         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4045         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4046 }
4047
4048 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4049 {
4050         struct get_set_mib m;
4051         m.type = type;
4052         m.size = 1;
4053         m.index = index;
4054         m.data[0] = data;
4055
4056         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4057 }
4058
4059 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4060                             u16 data)
4061 {
4062         struct get_set_mib m;
4063         m.type = type;
4064         m.size = 2;
4065         m.index = index;
4066         m.data[0] = data;
4067         m.data[1] = data >> 8;
4068
4069         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4070 }
4071
4072 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4073                           u8 *data, int data_len)
4074 {
4075         struct get_set_mib m;
4076         m.type = type;
4077         m.size = data_len;
4078         m.index = index;
4079
4080         if (data_len > MIB_MAX_DATA_BYTES)
4081                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4082
4083         memcpy(m.data, data, data_len);
4084         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4085 }
4086
4087 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4088                           u8 *data, int data_len)
4089 {
4090         struct get_set_mib m;
4091         m.type = type;
4092         m.size = data_len;
4093         m.index = index;
4094
4095         if (data_len > MIB_MAX_DATA_BYTES)
4096                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4097
4098         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4099         atmel_copy_to_host(priv->dev, data,
4100                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4101 }
4102
4103 static void atmel_writeAR(struct net_device *dev, u16 data)
4104 {
4105         int i;
4106         outw(data, dev->base_addr + AR);
4107         /* Address register appears to need some convincing..... */
4108         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4109                 outw(data, dev->base_addr + AR);
4110 }
4111
4112 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4113                                unsigned char *src, u16 len)
4114 {
4115         int i;
4116         atmel_writeAR(dev, dest);
4117         if (dest % 2) {
4118                 atmel_write8(dev, DR, *src);
4119                 src++; len--;
4120         }
4121         for (i = len; i > 1 ; i -= 2) {
4122                 u8 lb = *src++;
4123                 u8 hb = *src++;
4124                 atmel_write16(dev, DR, lb | (hb << 8));
4125         }
4126         if (i)
4127                 atmel_write8(dev, DR, *src);
4128 }
4129
4130 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4131                                u16 src, u16 len)
4132 {
4133         int i;
4134         atmel_writeAR(dev, src);
4135         if (src % 2) {
4136                 *dest = atmel_read8(dev, DR);
4137                 dest++; len--;
4138         }
4139         for (i = len; i > 1 ; i -= 2) {
4140                 u16 hw = atmel_read16(dev, DR);
4141                 *dest++ = hw;
4142                 *dest++ = hw >> 8;
4143         }
4144         if (i)
4145                 *dest = atmel_read8(dev, DR);
4146 }
4147
4148 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4149 {
4150         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4151 }
4152
4153 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4154 {
4155         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4156 }
4157
4158 static int atmel_lock_mac(struct atmel_private *priv)
4159 {
4160         int i, j = 20;
4161  retry:
4162         for (i = 5000; i; i--) {
4163                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4164                         break;
4165                 udelay(20);
4166         }
4167
4168         if (!i)
4169                 return 0; /* timed out */
4170
4171         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4172         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4173                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4174                 if (!j--)
4175                         return 0; /* timed out */
4176                 goto retry;
4177         }
4178
4179         return 1;
4180 }
4181
4182 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4183 {
4184         atmel_writeAR(priv->dev, pos);
4185         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4186         atmel_write16(priv->dev, DR, data >> 16);
4187 }
4188
4189 /***************************************************************************/
4190 /* There follows the source form of the MAC address reading firmware       */
4191 /***************************************************************************/
4192 #if 0
4193
4194 /* Copyright 2003 Matthew T. Russotto                                      */
4195 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4196 /* included in "atmel wireless lan drivers" package                        */
4197 /**
4198     This file is part of net.russotto.AtmelMACFW, hereto referred to
4199     as AtmelMACFW
4200
4201     AtmelMACFW is free software; you can redistribute it and/or modify
4202     it under the terms of the GNU General Public License version 2
4203     as published by the Free Software Foundation.
4204
4205     AtmelMACFW is distributed in the hope that it will be useful,
4206     but WITHOUT ANY WARRANTY; without even the implied warranty of
4207     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4208     GNU General Public License for more details.
4209
4210     You should have received a copy of the GNU General Public License
4211     along with AtmelMACFW; if not, write to the Free Software
4212     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4213
4214 ****************************************************************************/
4215 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4216 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4217 /* It only works on SPI EEPROM versions of the card.                       */
4218
4219 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4220 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4221 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4222 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4223 /* MR4, for investigational purposes (maybe we can determine chip type     */
4224 /* from that?)                                                             */
4225
4226         .org 0
4227     .set MRBASE, 0x8000000
4228         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4229         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4230         .set SRAM_BASE,  0x02000000
4231         .set SP_BASE,    0x0F300000
4232         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4233         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4234         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4235         .set STACK_BASE, 0x5600
4236         .set SP_SR, 0x10
4237         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4238         .set SP_RDRF, 1 /* status register bit -- RDR full */
4239         .set SP_SWRST, 0x80
4240         .set SP_SPIEN, 0x1
4241         .set SP_CR, 0   /* control register */
4242         .set SP_MR, 4   /* mode register */
4243         .set SP_RDR, 0x08 /* Read Data Register */
4244         .set SP_TDR, 0x0C /* Transmit Data Register */
4245         .set SP_CSR0, 0x30 /* chip select registers */
4246         .set SP_CSR1, 0x34
4247         .set SP_CSR2, 0x38
4248         .set SP_CSR3, 0x3C
4249         .set NVRAM_CMD_RDSR, 5 /* read status register */
4250         .set NVRAM_CMD_READ, 3 /* read data */
4251         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4252         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4253                                   serial output, since SO is normally high.  But it
4254                                   does cause 8 clock cycles and thus 8 bits to be
4255                                   clocked in to the chip.  See Atmel's SPI
4256                                   controller (e.g. AT91M55800) timing and 4K
4257                                   SPI EEPROM manuals */
4258
4259         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4260         .set NVRAM_IMAGE, 0x02000200
4261         .set NVRAM_LENGTH, 0x0200
4262         .set MAC_ADDRESS_MIB, SRAM_BASE
4263         .set MAC_ADDRESS_LENGTH, 6
4264         .set MAC_BOOT_FLAG, 0x10
4265         .set MR1, 0
4266         .set MR2, 4
4267         .set MR3, 8
4268         .set MR4, 0xC
4269 RESET_VECTOR:
4270         b RESET_HANDLER
4271 UNDEF_VECTOR:
4272         b HALT1
4273 SWI_VECTOR:
4274         b HALT1
4275 IABORT_VECTOR:
4276         b HALT1
4277 DABORT_VECTOR:
4278 RESERVED_VECTOR:
4279         b HALT1
4280 IRQ_VECTOR:
4281         b HALT1
4282 FIQ_VECTOR:
4283         b HALT1
4284 HALT1:  b HALT1
4285 RESET_HANDLER:
4286         mov     r0, #CPSR_INITIAL
4287         msr     CPSR_c, r0      /* This is probably unnecessary */
4288
4289 /* I'm guessing this is initializing clock generator electronics for SPI */
4290         ldr     r0, =SPI_CGEN_BASE
4291         mov     r1, #0
4292         mov     r1, r1, lsl #3
4293         orr     r1,r1, #0
4294         str     r1, [r0]
4295         ldr     r1, [r0, #28]
4296         bic     r1, r1, #16
4297         str     r1, [r0, #28]
4298         mov     r1, #1
4299         str     r1, [r0, #8]
4300
4301         ldr     r0, =MRBASE
4302         mov     r1, #0
4303         strh    r1, [r0, #MR1]
4304         strh    r1, [r0, #MR2]
4305         strh    r1, [r0, #MR3]
4306         strh    r1, [r0, #MR4]
4307
4308         mov     sp, #STACK_BASE
4309         bl      SP_INIT
4310         mov     r0, #10
4311         bl      DELAY9
4312         bl      GET_MAC_ADDR
4313         bl      GET_WHOLE_NVRAM
4314         ldr     r0, =MRBASE
4315         ldr     r1, =MAC_ADDRESS_MIB
4316         strh    r1, [r0, #MR2]
4317         ldr     r1, =NVRAM_IMAGE
4318         strh    r1, [r0, #MR4]
4319         mov     r1, #MAC_BOOT_FLAG
4320         strh    r1, [r0, #MR3]
4321 HALT2:  b HALT2
4322 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4323 GET_WHOLE_NVRAM:
4324         stmdb   sp!, {lr}
4325         mov     r2, #0 /* 0th bytes of NVRAM */
4326         mov     r3, #NVRAM_LENGTH
4327         mov     r1, #0          /* not used in routine */
4328         ldr     r0, =NVRAM_IMAGE
4329         bl      NVRAM_XFER
4330         ldmia   sp!, {lr}
4331         bx      lr
4332 .endfunc
4333
4334 .func Get_MAC_Addr, GET_MAC_ADDR
4335 GET_MAC_ADDR:
4336         stmdb   sp!, {lr}
4337         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4338         mov     r3, #MAC_ADDRESS_LENGTH
4339         mov     r1, #0          /* not used in routine */
4340         ldr     r0, =MAC_ADDRESS_MIB
4341         bl      NVRAM_XFER
4342         ldmia   sp!, {lr}
4343         bx      lr
4344 .endfunc
4345 .ltorg
4346 .func Delay9, DELAY9
4347 DELAY9:
4348         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4349 DELAYLOOP:
4350         beq     DELAY9_done
4351         subs    r0, r0, #1
4352         b       DELAYLOOP
4353 DELAY9_done:
4354         bx      lr
4355 .endfunc
4356
4357 .func SP_Init, SP_INIT
4358 SP_INIT:
4359         mov     r1, #SP_SWRST
4360         ldr     r0, =SP_BASE
4361         str     r1, [r0, #SP_CR] /* reset the SPI */
4362         mov     r1, #0
4363         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4364         mov     r1, #SP_SPIEN
4365         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4366         str     r1, [r0, #SP_CR] /* enable the SPI */
4367
4368 /*  My guess would be this turns on the SPI clock */
4369         ldr     r3, =SPI_CGEN_BASE
4370         ldr     r1, [r3, #28]
4371         orr     r1, r1, #0x2000
4372         str     r1, [r3, #28]
4373
4374         ldr     r1, =0x2000c01
4375         str     r1, [r0, #SP_CSR0]
4376         ldr     r1, =0x2000201
4377         str     r1, [r0, #SP_CSR1]
4378         str     r1, [r0, #SP_CSR2]
4379         str     r1, [r0, #SP_CSR3]
4380         ldr     r1, [r0, #SP_SR]
4381         ldr     r0, [r0, #SP_RDR]
4382         bx      lr
4383 .endfunc
4384 .func NVRAM_Init, NVRAM_INIT
4385 NVRAM_INIT:
4386         ldr     r1, =SP_BASE
4387         ldr     r0, [r1, #SP_RDR]
4388         mov     r0, #NVRAM_CMD_RDSR
4389         str     r0, [r1, #SP_TDR]
4390 SP_loop1:
4391         ldr     r0, [r1, #SP_SR]
4392         tst     r0, #SP_TDRE
4393         beq     SP_loop1
4394
4395         mov     r0, #SPI_8CLOCKS
4396         str     r0, [r1, #SP_TDR]
4397 SP_loop2:
4398         ldr     r0, [r1, #SP_SR]
4399         tst     r0, #SP_TDRE
4400         beq     SP_loop2
4401
4402         ldr     r0, [r1, #SP_RDR]
4403 SP_loop3:
4404         ldr     r0, [r1, #SP_SR]
4405         tst     r0, #SP_RDRF
4406         beq     SP_loop3
4407
4408         ldr     r0, [r1, #SP_RDR]
4409         and     r0, r0, #255
4410         bx      lr
4411 .endfunc
4412
4413 .func NVRAM_Xfer, NVRAM_XFER
4414         /* r0 = dest address */
4415         /* r1 = not used */
4416         /* r2 = src address within NVRAM */
4417         /* r3 = length */
4418 NVRAM_XFER:
4419         stmdb   sp!, {r4, r5, lr}
4420         mov     r5, r0          /* save r0 (dest address) */
4421         mov     r4, r3          /* save r3 (length) */
4422         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4423         and     r0, r0, #8
4424         add     r0, r0, #NVRAM_CMD_READ
4425         ldr     r1, =NVRAM_SCRATCH
4426         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4427         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4428 _local1:
4429         bl      NVRAM_INIT
4430         tst     r0, #NVRAM_SR_RDY
4431         bne     _local1
4432         mov     r0, #20
4433         bl      DELAY9
4434         mov     r2, r4          /* length */
4435         mov     r1, r5          /* dest address */
4436         mov     r0, #2          /* bytes to transfer in command */
4437         bl      NVRAM_XFER2
4438         ldmia   sp!, {r4, r5, lr}
4439         bx      lr
4440 .endfunc
4441
4442 .func NVRAM_Xfer2, NVRAM_XFER2
4443 NVRAM_XFER2:
4444         stmdb   sp!, {r4, r5, r6, lr}
4445         ldr     r4, =SP_BASE
4446         mov     r3, #0
4447         cmp     r0, #0
4448         bls     _local2
4449         ldr     r5, =NVRAM_SCRATCH
4450 _local4:
4451         ldrb    r6, [r5, r3]
4452         str     r6, [r4, #SP_TDR]
4453 _local3:
4454         ldr     r6, [r4, #SP_SR]
4455         tst     r6, #SP_TDRE
4456         beq     _local3
4457         add     r3, r3, #1
4458         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4459         blo     _local4
4460 _local2:
4461         mov     r3, #SPI_8CLOCKS
4462         str     r3, [r4, #SP_TDR]
4463         ldr     r0, [r4, #SP_RDR]
4464 _local5:
4465         ldr     r0, [r4, #SP_SR]
4466         tst     r0, #SP_RDRF
4467         beq     _local5
4468         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 */
4469         mov     r0, #0
4470         cmp     r2, #0  /* r2 is # of bytes to copy in */
4471         bls     _local6
4472 _local7:
4473         ldr     r5, [r4, #SP_SR]
4474         tst     r5, #SP_TDRE
4475         beq     _local7
4476         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4477 _local8:
4478         ldr     r5, [r4, #SP_SR]
4479         tst     r5, #SP_RDRF
4480         beq     _local8
4481         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4482         strb    r5, [r1], #1 /* postindexed */
4483         add     r0, r0, #1
4484         cmp     r0, r2
4485         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4486 _local6:
4487         mov     r0, #200
4488         bl      DELAY9
4489         ldmia   sp!, {r4, r5, r6, lr}
4490         bx      lr
4491 #endif