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, see
  32     <http://www.gnu.org/licenses/>.
  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/interrupt.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/timer.h>
  49 #include <asm/byteorder.h>
  50 #include <asm/io.h>
  51 #include <asm/uaccess.h>
  52 #include <linux/module.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/if_arp.h>
  57 #include <linux/ioport.h>
  58 #include <linux/fcntl.h>
  59 #include <linux/delay.h>
  60 #include <linux/wireless.h>
  61 #include <net/iw_handler.h>
  62 #include <linux/crc32.h>
  63 #include <linux/proc_fs.h>
  64 #include <linux/seq_file.h>
  65 #include <linux/device.h>
  66 #include <linux/moduleparam.h>
  67 #include <linux/firmware.h>
  68 #include <linux/jiffies.h>
  69 #include <net/cfg80211.h>
  70 #include "atmel.h"
  71
  72 #define DRIVER_MAJOR 0
  73 #define DRIVER_MINOR 98
  74
  75 MODULE_AUTHOR("Simon Kelley");
  76 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  77 MODULE_LICENSE("GPL");
  78 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  79
  80 /* The name of the firmware file to be loaded
  81    over-rides any automatic selection */
  82 static char *firmware = NULL;
  83 module_param(firmware, charp, 0);
  84
  85 /* table of firmware file names */
  86 static struct {
  87         AtmelFWType fw_type;
  88         const char *fw_file;
  89         const char *fw_file_ext;
  90 } fw_table[] = {
  91         { ATMEL_FW_TYPE_502,            "atmel_at76c502",       "bin" },
  92         { ATMEL_FW_TYPE_502D,           "atmel_at76c502d",      "bin" },
  93         { ATMEL_FW_TYPE_502E,           "atmel_at76c502e",      "bin" },
  94         { ATMEL_FW_TYPE_502_3COM,       "atmel_at76c502_3com",  "bin" },
  95         { ATMEL_FW_TYPE_504,            "atmel_at76c504",       "bin" },
  96         { ATMEL_FW_TYPE_504_2958,       "atmel_at76c504_2958",  "bin" },
  97         { ATMEL_FW_TYPE_504A_2958,      "atmel_at76c504a_2958", "bin" },
  98         { ATMEL_FW_TYPE_506,            "atmel_at76c506",       "bin" },
  99         { ATMEL_FW_TYPE_NONE,           NULL,                   NULL }
 100 };
 101 MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
 102 MODULE_FIRMWARE("atmel_at76c502.bin");
 103 MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
 104 MODULE_FIRMWARE("atmel_at76c502d.bin");
 105 MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
 106 MODULE_FIRMWARE("atmel_at76c502e.bin");
 107 MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
 108 MODULE_FIRMWARE("atmel_at76c502_3com.bin");
 109 MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
 110 MODULE_FIRMWARE("atmel_at76c504.bin");
 111 MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
 112 MODULE_FIRMWARE("atmel_at76c504_2958.bin");
 113 MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
 114 MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
 115 MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
 116 MODULE_FIRMWARE("atmel_at76c506.bin");
 117
 118 #define MAX_SSID_LENGTH 32
 119 #define MGMT_JIFFIES (256 * HZ / 100)
 120
 121 #define MAX_BSS_ENTRIES 64
 122
 123 /* registers */
 124 #define GCR  0x00    /* (SIR0)  General Configuration Register */
 125 #define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
 126 #define AR   0x04
 127 #define DR   0x08
 128 #define MR1  0x12    /* Mirror Register 1 */
 129 #define MR2  0x14    /* Mirror Register 2 */
 130 #define MR3  0x16    /* Mirror Register 3 */
 131 #define MR4  0x18    /* Mirror Register 4 */
 132
 133 #define GPR1                            0x0c
 134 #define GPR2                            0x0e
 135 #define GPR3                            0x10
 136 /*
 137  * Constants for the GCR register.
 138  */
 139 #define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
 140 #define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
 141 #define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
 142 #define GCR_ENINT     0x0002          /* Enable Interrupts */
 143 #define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */
 144
 145 #define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
 146 #define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
 147 /*
 148  *Constants for the MR registers.
 149  */
 150 #define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
 151 #define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
 152 #define MAC_INIT_OK             0x0002        /* MAC boot has been completed */
 153
 154 #define MIB_MAX_DATA_BYTES    212
 155 #define MIB_HEADER_SIZE       4    /* first four fields */
 156
 157 struct get_set_mib {
 158         u8 type;
 159         u8 size;
 160         u8 index;
 161         u8 reserved;
 162         u8 data[MIB_MAX_DATA_BYTES];
 163 };
 164
 165 struct rx_desc {
 166         u32          Next;
 167         u16          MsduPos;
 168         u16          MsduSize;
 169
 170         u8           State;
 171         u8           Status;
 172         u8           Rate;
 173         u8           Rssi;
 174         u8           LinkQuality;
 175         u8           PreambleType;
 176         u16          Duration;
 177         u32          RxTime;
 178 };
 179
 180 #define RX_DESC_FLAG_VALID       0x80
 181 #define RX_DESC_FLAG_CONSUMED    0x40
 182 #define RX_DESC_FLAG_IDLE        0x00
 183
 184 #define RX_STATUS_SUCCESS        0x00
 185
 186 #define RX_DESC_MSDU_POS_OFFSET      4
 187 #define RX_DESC_MSDU_SIZE_OFFSET     6
 188 #define RX_DESC_FLAGS_OFFSET         8
 189 #define RX_DESC_STATUS_OFFSET        9
 190 #define RX_DESC_RSSI_OFFSET          11
 191 #define RX_DESC_LINK_QUALITY_OFFSET  12
 192 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 193 #define RX_DESC_DURATION_OFFSET      14
 194 #define RX_DESC_RX_TIME_OFFSET       16
 195
 196 struct tx_desc {
 197         u32       NextDescriptor;
 198         u16       TxStartOfFrame;
 199         u16       TxLength;
 200
 201         u8        TxState;
 202         u8        TxStatus;
 203         u8        RetryCount;
 204
 205         u8        TxRate;
 206
 207         u8        KeyIndex;
 208         u8        ChiperType;
 209         u8        ChipreLength;
 210         u8        Reserved1;
 211
 212         u8        Reserved;
 213         u8        PacketType;
 214         u16       HostTxLength;
 215 };
 216
 217 #define TX_DESC_NEXT_OFFSET          0
 218 #define TX_DESC_POS_OFFSET           4
 219 #define TX_DESC_SIZE_OFFSET          6
 220 #define TX_DESC_FLAGS_OFFSET         8
 221 #define TX_DESC_STATUS_OFFSET        9
 222 #define TX_DESC_RETRY_OFFSET         10
 223 #define TX_DESC_RATE_OFFSET          11
 224 #define TX_DESC_KEY_INDEX_OFFSET     12
 225 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 226 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 227 #define TX_DESC_PACKET_TYPE_OFFSET   17
 228 #define TX_DESC_HOST_LENGTH_OFFSET   18
 229
 230 /*
 231  * Host-MAC interface
 232  */
 233
 234 #define TX_STATUS_SUCCESS       0x00
 235
 236 #define TX_FIRM_OWN             0x80
 237 #define TX_DONE                 0x40
 238
 239 #define TX_ERROR                0x01
 240
 241 #define TX_PACKET_TYPE_DATA     0x01
 242 #define TX_PACKET_TYPE_MGMT     0x02
 243
 244 #define ISR_EMPTY               0x00        /* no bits set in ISR */
 245 #define ISR_TxCOMPLETE          0x01        /* packet transmitted */
 246 #define ISR_RxCOMPLETE          0x02        /* packet received */
 247 #define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
 248 #define ISR_FATAL_ERROR         0x08        /* Fatal error */
 249 #define ISR_COMMAND_COMPLETE    0x10        /* command completed */
 250 #define ISR_OUT_OF_RANGE        0x20        /* command completed */
 251 #define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
 252 #define ISR_GENERIC_IRQ         0x80
 253
 254 #define Local_Mib_Type          0x01
 255 #define Mac_Address_Mib_Type    0x02
 256 #define Mac_Mib_Type            0x03
 257 #define Statistics_Mib_Type     0x04
 258 #define Mac_Mgmt_Mib_Type       0x05
 259 #define Mac_Wep_Mib_Type        0x06
 260 #define Phy_Mib_Type            0x07
 261 #define Multi_Domain_MIB        0x08
 262
 263 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 264 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 265 #define MAC_MIB_RTS_THRESHOLD_POS             10
 266 #define MAC_MIB_SHORT_RETRY_POS               16
 267 #define MAC_MIB_LONG_RETRY_POS                17
 268 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 269 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 270 #define MAC_MGMT_MIB_STATION_ID_POS           6
 271 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 272 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 273 #define MAC_MGMT_MIB_PS_MODE_POS              53
 274 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 275 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 276 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 277 #define PHY_MIB_CHANNEL_POS                   14
 278 #define PHY_MIB_RATE_SET_POS                  20
 279 #define PHY_MIB_REG_DOMAIN_POS                26
 280 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 281 #define LOCAL_MIB_SSID_SIZE                   5
 282 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 283 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 284 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 285 #define LOCAL_MIB_PREAMBLE_TYPE               9
 286 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 287
 288 #define         CMD_Set_MIB_Vars              0x01
 289 #define         CMD_Get_MIB_Vars              0x02
 290 #define         CMD_Scan                      0x03
 291 #define         CMD_Join                      0x04
 292 #define         CMD_Start                     0x05
 293 #define         CMD_EnableRadio               0x06
 294 #define         CMD_DisableRadio              0x07
 295 #define         CMD_SiteSurvey                0x0B
 296
 297 #define         CMD_STATUS_IDLE                   0x00
 298 #define         CMD_STATUS_COMPLETE               0x01
 299 #define         CMD_STATUS_UNKNOWN                0x02
 300 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 301 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 302 #define         CMD_STATUS_TIME_OUT               0x07
 303 #define         CMD_STATUS_IN_PROGRESS            0x08
 304 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 305 #define         CMD_STATUS_HOST_ERROR             0xFF
 306 #define         CMD_STATUS_BUSY                   0xFE
 307
 308 #define CMD_BLOCK_COMMAND_OFFSET        0
 309 #define CMD_BLOCK_STATUS_OFFSET         1
 310 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 311
 312 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 313
 314 #define MGMT_FRAME_BODY_OFFSET          24
 315 #define MAX_AUTHENTICATION_RETRIES      3
 316 #define MAX_ASSOCIATION_RETRIES         3
 317
 318 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 319
 320 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 321 #define LOOP_RETRY_LIMIT   500000
 322
 323 #define ACTIVE_MODE     1
 324 #define PS_MODE         2
 325
 326 #define MAX_ENCRYPTION_KEYS 4
 327 #define MAX_ENCRYPTION_KEY_SIZE 40
 328
 329 /*
 330  * 802.11 related definitions
 331  */
 332
 333 /*
 334  * Regulatory Domains
 335  */
 336
 337 #define REG_DOMAIN_FCC          0x10    /* Channels     1-11    USA                             */
 338 #define REG_DOMAIN_DOC          0x20    /* Channel      1-11    Canada                          */
 339 #define REG_DOMAIN_ETSI         0x30    /* Channel      1-13    Europe (ex Spain/France)        */
 340 #define REG_DOMAIN_SPAIN        0x31    /* Channel      10-11   Spain                           */
 341 #define REG_DOMAIN_FRANCE       0x32    /* Channel      10-13   France                          */
 342 #define REG_DOMAIN_MKK          0x40    /* Channel      14      Japan                           */
 343 #define REG_DOMAIN_MKK1         0x41    /* Channel      1-14    Japan(MKK1)                     */
 344 #define REG_DOMAIN_ISRAEL       0x50    /* Channel      3-9     ISRAEL                          */
 345
 346 #define BSS_TYPE_AD_HOC         1
 347 #define BSS_TYPE_INFRASTRUCTURE 2
 348
 349 #define SCAN_TYPE_ACTIVE        0
 350 #define SCAN_TYPE_PASSIVE       1
 351
 352 #define LONG_PREAMBLE           0
 353 #define SHORT_PREAMBLE          1
 354 #define AUTO_PREAMBLE           2
 355
 356 #define DATA_FRAME_WS_HEADER_SIZE   30
 357
 358 /* promiscuous mode control */
 359 #define PROM_MODE_OFF                   0x0
 360 #define PROM_MODE_UNKNOWN               0x1
 361 #define PROM_MODE_CRC_FAILED            0x2
 362 #define PROM_MODE_DUPLICATED            0x4
 363 #define PROM_MODE_MGMT                  0x8
 364 #define PROM_MODE_CTRL                  0x10
 365 #define PROM_MODE_BAD_PROTOCOL          0x20
 366
 367 #define IFACE_INT_STATUS_OFFSET         0
 368 #define IFACE_INT_MASK_OFFSET           1
 369 #define IFACE_LOCKOUT_HOST_OFFSET       2
 370 #define IFACE_LOCKOUT_MAC_OFFSET        3
 371 #define IFACE_FUNC_CTRL_OFFSET          28
 372 #define IFACE_MAC_STAT_OFFSET           30
 373 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 374
 375 #define CIPHER_SUITE_NONE     0
 376 #define CIPHER_SUITE_WEP_64   1
 377 #define CIPHER_SUITE_TKIP     2
 378 #define CIPHER_SUITE_AES      3
 379 #define CIPHER_SUITE_CCX      4
 380 #define CIPHER_SUITE_WEP_128  5
 381
 382 /*
 383  * IFACE MACROS & definitions
 384  */
 385
 386 /*
 387  * FuncCtrl field:
 388  */
 389 #define FUNC_CTRL_TxENABLE              0x10
 390 #define FUNC_CTRL_RxENABLE              0x20
 391 #define FUNC_CTRL_INIT_COMPLETE         0x01
 392
 393 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 394    For copyright information and source see the end of this file. */
 395 static u8 mac_reader[] = {
 396         0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
 397         0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
 398         0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 399         0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
 400         0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
 401         0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
 402         0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
 403         0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
 404         0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
 405         0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
 406         0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 407         0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 408         0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 409         0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 410         0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
 411         0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
 412         0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
 413         0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
 414         0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
 415         0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
 416         0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
 417         0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
 418         0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
 419         0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 420         0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 421         0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
 422         0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
 423         0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
 424         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
 425         0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
 426         0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
 427         0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
 428         0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
 429         0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
 430         0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
 431         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
 432         0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
 433         0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
 434         0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
 435         0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
 436         0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
 437         0x00, 0x01, 0x00, 0x02
 438 };
 439
 440 struct atmel_private {
 441         void *card; /* Bus dependent structure varies for PCcard */
 442         int (*present_callback)(void *); /* And callback which uses it */
 443         char firmware_id[32];
 444         AtmelFWType firmware_type;
 445         u8 *firmware;
 446         int firmware_length;
 447         struct timer_list management_timer;
 448         struct net_device *dev;
 449         struct device *sys_dev;
 450         struct iw_statistics wstats;
 451         spinlock_t irqlock, timerlock;  /* spinlocks */
 452         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 453         enum {
 454                 CARD_TYPE_PARALLEL_FLASH,
 455                 CARD_TYPE_SPI_FLASH,
 456                 CARD_TYPE_EEPROM
 457         } card_type;
 458         int do_rx_crc; /* If we need to CRC incoming packets */
 459         int probe_crc; /* set if we don't yet know */
 460         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 461         u16 rx_desc_head;
 462         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 463         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 464
 465         u16 frag_seq, frag_len, frag_no;
 466         u8 frag_source[6];
 467
 468         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 469         u8 group_cipher_suite, pairwise_cipher_suite;
 470         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 471         int wep_key_len[MAX_ENCRYPTION_KEYS];
 472         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 473
 474         u16 host_info_base;
 475         struct host_info_struct {
 476                 /* NB this is matched to the hardware, don't change. */
 477                 u8 volatile int_status;
 478                 u8 volatile int_mask;
 479                 u8 volatile lockout_host;
 480                 u8 volatile lockout_mac;
 481
 482                 u16 tx_buff_pos;
 483                 u16 tx_buff_size;
 484                 u16 tx_desc_pos;
 485                 u16 tx_desc_count;
 486
 487                 u16 rx_buff_pos;
 488                 u16 rx_buff_size;
 489                 u16 rx_desc_pos;
 490                 u16 rx_desc_count;
 491
 492                 u16 build_version;
 493                 u16 command_pos;
 494
 495                 u16 major_version;
 496                 u16 minor_version;
 497
 498                 u16 func_ctrl;
 499                 u16 mac_status;
 500                 u16 generic_IRQ_type;
 501                 u8  reserved[2];
 502         } host_info;
 503
 504         enum {
 505                 STATION_STATE_SCANNING,
 506                 STATION_STATE_JOINNING,
 507                 STATION_STATE_AUTHENTICATING,
 508                 STATION_STATE_ASSOCIATING,
 509                 STATION_STATE_READY,
 510                 STATION_STATE_REASSOCIATING,
 511                 STATION_STATE_DOWN,
 512                 STATION_STATE_MGMT_ERROR
 513         } station_state;
 514
 515         int operating_mode, power_mode;
 516         time_t last_qual;
 517         int beacons_this_sec;
 518         int channel;
 519         int reg_domain, config_reg_domain;
 520         int tx_rate;
 521         int auto_tx_rate;
 522         int rts_threshold;
 523         int frag_threshold;
 524         int long_retry, short_retry;
 525         int preamble;
 526         int default_beacon_period, beacon_period, listen_interval;
 527         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 528         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 529         enum {
 530                 SITE_SURVEY_IDLE,
 531                 SITE_SURVEY_IN_PROGRESS,
 532                 SITE_SURVEY_COMPLETED
 533         } site_survey_state;
 534         unsigned long last_survey;
 535
 536         int station_was_associated, station_is_associated;
 537         int fast_scan;
 538
 539         struct bss_info {
 540                 int channel;
 541                 int SSIDsize;
 542                 int RSSI;
 543                 int UsingWEP;
 544                 int preamble;
 545                 int beacon_period;
 546                 int BSStype;
 547                 u8 BSSID[6];
 548                 u8 SSID[MAX_SSID_LENGTH];
 549         } BSSinfo[MAX_BSS_ENTRIES];
 550         int BSS_list_entries, current_BSS;
 551         int connect_to_any_BSS;
 552         int SSID_size, new_SSID_size;
 553         u8 CurrentBSSID[6], BSSID[6];
 554         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 555         u64 last_beacon_timestamp;
 556         u8 rx_buf[MAX_WIRELESS_BODY];
 557 };
 558
 559 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 560
 561 static const struct {
 562         int reg_domain;
 563         int min, max;
 564         char *name;
 565 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 566                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 567                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 568                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 569                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 570                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 571                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 572                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 573
 574 static void build_wpa_mib(struct atmel_private *priv);
 575 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 576 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 577                                const unsigned char *src, u16 len);
 578 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 579                                u16 src, u16 len);
 580 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 581 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 582 static int atmel_lock_mac(struct atmel_private *priv);
 583 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 584 static void atmel_command_irq(struct atmel_private *priv);
 585 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 586 static void atmel_management_frame(struct atmel_private *priv,
 587                                    struct ieee80211_hdr *header,
 588                                    u16 frame_len, u8 rssi);
 589 static void atmel_management_timer(u_long a);
 590 static void atmel_send_command(struct atmel_private *priv, int command,
 591                                void *cmd, int cmd_size);
 592 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 593                                    void *cmd, int cmd_size);
 594 static void atmel_transmit_management_frame(struct atmel_private *priv,
 595                                             struct ieee80211_hdr *header,
 596                                             u8 *body, int body_len);
 597
 598 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 599 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 600                            u8 data);
 601 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 602                             u16 data);
 603 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 604                           u8 *data, int data_len);
 605 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 606                           u8 *data, int data_len);
 607 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 608 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 609 static void atmel_smooth_qual(struct atmel_private *priv);
 610 static void atmel_writeAR(struct net_device *dev, u16 data);
 611 static int probe_atmel_card(struct net_device *dev);
 612 static int reset_atmel_card(struct net_device *dev);
 613 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 614 int atmel_open (struct net_device *dev);
 615
 616 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 617 {
 618         return priv->host_info_base + offset;
 619 }
 620
 621 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 622 {
 623         return priv->host_info.command_pos + offset;
 624 }
 625
 626 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 627 {
 628         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 629 }
 630
 631 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 632 {
 633         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 634 }
 635
 636 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 637 {
 638         return inb(dev->base_addr + offset);
 639 }
 640
 641 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 642 {
 643         outb(data, dev->base_addr + offset);
 644 }
 645
 646 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 647 {
 648         return inw(dev->base_addr + offset);
 649 }
 650
 651 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 652 {
 653         outw(data, dev->base_addr + offset);
 654 }
 655
 656 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 657 {
 658         atmel_writeAR(priv->dev, pos);
 659         return atmel_read8(priv->dev, DR);
 660 }
 661
 662 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 663 {
 664         atmel_writeAR(priv->dev, pos);
 665         atmel_write8(priv->dev, DR, data);
 666 }
 667
 668 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 669 {
 670         atmel_writeAR(priv->dev, pos);
 671         return atmel_read16(priv->dev, DR);
 672 }
 673
 674 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 675 {
 676         atmel_writeAR(priv->dev, pos);
 677         atmel_write16(priv->dev, DR, data);
 678 }
 679
 680 static const struct iw_handler_def atmel_handler_def;
 681
 682 static void tx_done_irq(struct atmel_private *priv)
 683 {
 684         int i;
 685
 686         for (i = 0;
 687              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 688                      i < priv->host_info.tx_desc_count;
 689              i++) {
 690                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 691                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 692                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 693
 694                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 695
 696                 priv->tx_free_mem += msdu_size;
 697                 priv->tx_desc_free++;
 698
 699                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 700                         priv->tx_buff_head = 0;
 701                 else
 702                         priv->tx_buff_head += msdu_size;
 703
 704                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 705                         priv->tx_desc_head++ ;
 706                 else
 707                         priv->tx_desc_head = 0;
 708
 709                 if (type == TX_PACKET_TYPE_DATA) {
 710                         if (status == TX_STATUS_SUCCESS)
 711                                 priv->dev->stats.tx_packets++;
 712                         else
 713                                 priv->dev->stats.tx_errors++;
 714                         netif_wake_queue(priv->dev);
 715                 }
 716         }
 717 }
 718
 719 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 720 {
 721         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 722
 723         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 724                 return 0;
 725
 726         if (bottom_free >= len)
 727                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 728
 729         if (priv->tx_free_mem - bottom_free >= len) {
 730                 priv->tx_buff_tail = 0;
 731                 return priv->host_info.tx_buff_pos;
 732         }
 733
 734         return 0;
 735 }
 736
 737 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 738                                  u16 len, u16 buff, u8 type)
 739 {
 740         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 741         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 742         if (!priv->use_wpa)
 743                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 744         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 745         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 746         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 747         if (priv->use_wpa) {
 748                 int cipher_type, cipher_length;
 749                 if (is_bcast) {
 750                         cipher_type = priv->group_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->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 757                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 758                                 cipher_type = priv->pairwise_cipher_suite;
 759                                 cipher_length = 8;
 760                         } else {
 761                                 cipher_type = CIPHER_SUITE_NONE;
 762                                 cipher_length = 0;
 763                         }
 764                 } else {
 765                         cipher_type = priv->pairwise_cipher_suite;
 766                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 767                             cipher_type == CIPHER_SUITE_WEP_128)
 768                                 cipher_length = 8;
 769                         else if (cipher_type == CIPHER_SUITE_TKIP)
 770                                 cipher_length = 12;
 771                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 772                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 773                                 cipher_type = priv->group_cipher_suite;
 774                                 cipher_length = 8;
 775                         } else {
 776                                 cipher_type = CIPHER_SUITE_NONE;
 777                                 cipher_length = 0;
 778                         }
 779                 }
 780
 781                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 782                             cipher_type);
 783                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 784                             cipher_length);
 785         }
 786         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 787         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 788         if (priv->tx_desc_previous != priv->tx_desc_tail)
 789                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 790         priv->tx_desc_previous = priv->tx_desc_tail;
 791         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 792                 priv->tx_desc_tail++;
 793         else
 794                 priv->tx_desc_tail = 0;
 795         priv->tx_desc_free--;
 796         priv->tx_free_mem -= len;
 797 }
 798
 799 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 800 {
 801         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 802         struct atmel_private *priv = netdev_priv(dev);
 803         struct ieee80211_hdr header;
 804         unsigned long flags;
 805         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 806
 807         if (priv->card && priv->present_callback &&
 808             !(*priv->present_callback)(priv->card)) {
 809                 dev->stats.tx_errors++;
 810                 dev_kfree_skb(skb);
 811                 return NETDEV_TX_OK;
 812         }
 813
 814         if (priv->station_state != STATION_STATE_READY) {
 815                 dev->stats.tx_errors++;
 816                 dev_kfree_skb(skb);
 817                 return NETDEV_TX_OK;
 818         }
 819
 820         /* first ensure the timer func cannot run */
 821         spin_lock_bh(&priv->timerlock);
 822         /* then stop the hardware ISR */
 823         spin_lock_irqsave(&priv->irqlock, flags);
 824         /* nb doing the above in the opposite order will deadlock */
 825
 826         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 827            12 first bytes (containing DA/SA) and put them in the appropriate
 828            fields of the Wireless Header. Thus the packet length is then the
 829            initial + 18 (+30-12) */
 830
 831         if (!(buff = find_tx_buff(priv, len + 18))) {
 832                 dev->stats.tx_dropped++;
 833                 spin_unlock_irqrestore(&priv->irqlock, flags);
 834                 spin_unlock_bh(&priv->timerlock);
 835                 netif_stop_queue(dev);
 836                 return NETDEV_TX_BUSY;
 837         }
 838
 839         frame_ctl = IEEE80211_FTYPE_DATA;
 840         header.duration_id = 0;
 841         header.seq_ctrl = 0;
 842         if (priv->wep_is_on)
 843                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 844         if (priv->operating_mode == IW_MODE_ADHOC) {
 845                 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
 846                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 847                 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
 848         } else {
 849                 frame_ctl |= IEEE80211_FCTL_TODS;
 850                 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
 851                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 852                 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
 853         }
 854
 855         if (priv->use_wpa)
 856                 memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN);
 857
 858         header.frame_control = cpu_to_le16(frame_ctl);
 859         /* Copy the wireless header into the card */
 860         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 861         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 862         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 863         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 864
 865         /* low bit of first byte of destination tells us if broadcast */
 866         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 867         dev->stats.tx_bytes += len;
 868
 869         spin_unlock_irqrestore(&priv->irqlock, flags);
 870         spin_unlock_bh(&priv->timerlock);
 871         dev_kfree_skb(skb);
 872
 873         return NETDEV_TX_OK;
 874 }
 875
 876 static void atmel_transmit_management_frame(struct atmel_private *priv,
 877                                             struct ieee80211_hdr *header,
 878                                             u8 *body, int body_len)
 879 {
 880         u16 buff;
 881         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 882
 883         if (!(buff = find_tx_buff(priv, len)))
 884                 return;
 885
 886         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 887         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 888         priv->tx_buff_tail += len;
 889         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 890 }
 891
 892 static void fast_rx_path(struct atmel_private *priv,
 893                          struct ieee80211_hdr *header,
 894                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 895 {
 896         /* fast path: unfragmented packet copy directly into skbuf */
 897         u8 mac4[6];
 898         struct sk_buff  *skb;
 899         unsigned char *skbp;
 900
 901         /* get the final, mac 4 header field, this tells us encapsulation */
 902         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 903         msdu_size -= 6;
 904
 905         if (priv->do_rx_crc) {
 906                 crc = crc32_le(crc, mac4, 6);
 907                 msdu_size -= 4;
 908         }
 909
 910         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 911                 priv->dev->stats.rx_dropped++;
 912                 return;
 913         }
 914
 915         skb_reserve(skb, 2);
 916         skbp = skb_put(skb, msdu_size + 12);
 917         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 918
 919         if (priv->do_rx_crc) {
 920                 u32 netcrc;
 921                 crc = crc32_le(crc, skbp + 12, msdu_size);
 922                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 923                 if ((crc ^ 0xffffffff) != netcrc) {
 924                         priv->dev->stats.rx_crc_errors++;
 925                         dev_kfree_skb(skb);
 926                         return;
 927                 }
 928         }
 929
 930         memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
 931         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 932                 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
 933         else
 934                 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
 935
 936         skb->protocol = eth_type_trans(skb, priv->dev);
 937         skb->ip_summed = CHECKSUM_NONE;
 938         netif_rx(skb);
 939         priv->dev->stats.rx_bytes += 12 + msdu_size;
 940         priv->dev->stats.rx_packets++;
 941 }
 942
 943 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 944    It doesn't matter that this is slow: it is only used to proble the first few
 945    packets. */
 946 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 947 {
 948         int i = msdu_size - 4;
 949         u32 netcrc, crc = 0xffffffff;
 950
 951         if (msdu_size < 4)
 952                 return 0;
 953
 954         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 955
 956         atmel_writeAR(priv->dev, packet_loc);
 957         while (i--) {
 958                 u8 octet = atmel_read8(priv->dev, DR);
 959                 crc = crc32_le(crc, &octet, 1);
 960         }
 961
 962         return (crc ^ 0xffffffff) == netcrc;
 963 }
 964
 965 static void frag_rx_path(struct atmel_private *priv,
 966                          struct ieee80211_hdr *header,
 967                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 968                          u8 frag_no, int more_frags)
 969 {
 970         u8 mac4[ETH_ALEN];
 971         u8 source[ETH_ALEN];
 972         struct sk_buff *skb;
 973
 974         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 975                 memcpy(source, header->addr3, ETH_ALEN);
 976         else
 977                 memcpy(source, header->addr2, ETH_ALEN);
 978
 979         rx_packet_loc += 24; /* skip header */
 980
 981         if (priv->do_rx_crc)
 982                 msdu_size -= 4;
 983
 984         if (frag_no == 0) { /* first fragment */
 985                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
 986                 msdu_size -= ETH_ALEN;
 987                 rx_packet_loc += ETH_ALEN;
 988
 989                 if (priv->do_rx_crc)
 990                         crc = crc32_le(crc, mac4, 6);
 991
 992                 priv->frag_seq = seq_no;
 993                 priv->frag_no = 1;
 994                 priv->frag_len = msdu_size;
 995                 memcpy(priv->frag_source, source, ETH_ALEN);
 996                 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
 997                 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
 998
 999                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1000
1001                 if (priv->do_rx_crc) {
1002                         u32 netcrc;
1003                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1004                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1005                         if ((crc ^ 0xffffffff) != netcrc) {
1006                                 priv->dev->stats.rx_crc_errors++;
1007                                 eth_broadcast_addr(priv->frag_source);
1008                         }
1009                 }
1010
1011         } else if (priv->frag_no == frag_no &&
1012                    priv->frag_seq == seq_no &&
1013                    memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
1014
1015                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1016                                    rx_packet_loc, msdu_size);
1017                 if (priv->do_rx_crc) {
1018                         u32 netcrc;
1019                         crc = crc32_le(crc,
1020                                        &priv->rx_buf[12 + priv->frag_len],
1021                                        msdu_size);
1022                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1023                         if ((crc ^ 0xffffffff) != netcrc) {
1024                                 priv->dev->stats.rx_crc_errors++;
1025                                 eth_broadcast_addr(priv->frag_source);
1026                                 more_frags = 1; /* don't send broken assembly */
1027                         }
1028                 }
1029
1030                 priv->frag_len += msdu_size;
1031                 priv->frag_no++;
1032
1033                 if (!more_frags) { /* last one */
1034                         eth_broadcast_addr(priv->frag_source);
1035                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1036                                 priv->dev->stats.rx_dropped++;
1037                         } else {
1038                                 skb_reserve(skb, 2);
1039                                 memcpy(skb_put(skb, priv->frag_len + 12),
1040                                        priv->rx_buf,
1041                                        priv->frag_len + 12);
1042                                 skb->protocol = eth_type_trans(skb, priv->dev);
1043                                 skb->ip_summed = CHECKSUM_NONE;
1044                                 netif_rx(skb);
1045                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1046                                 priv->dev->stats.rx_packets++;
1047                         }
1048                 }
1049         } else
1050                 priv->wstats.discard.fragment++;
1051 }
1052
1053 static void rx_done_irq(struct atmel_private *priv)
1054 {
1055         int i;
1056         struct ieee80211_hdr header;
1057
1058         for (i = 0;
1059              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1060                      i < priv->host_info.rx_desc_count;
1061              i++) {
1062
1063                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1064                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1065                 u32 crc = 0xffffffff;
1066
1067                 if (status != RX_STATUS_SUCCESS) {
1068                         if (status == 0xc1) /* determined by experiment */
1069                                 priv->wstats.discard.nwid++;
1070                         else
1071                                 priv->dev->stats.rx_errors++;
1072                         goto next;
1073                 }
1074
1075                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1076                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1077
1078                 if (msdu_size < 30) {
1079                         priv->dev->stats.rx_errors++;
1080                         goto next;
1081                 }
1082
1083                 /* Get header as far as end of seq_ctrl */
1084                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1085                 frame_ctl = le16_to_cpu(header.frame_control);
1086                 seq_control = le16_to_cpu(header.seq_ctrl);
1087
1088                 /* probe for CRC use here if needed  once five packets have
1089                    arrived with the same crc status, we assume we know what's
1090                    happening and stop probing */
1091                 if (priv->probe_crc) {
1092                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1093                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1094                         } else {
1095                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1096                         }
1097                         if (priv->do_rx_crc) {
1098                                 if (priv->crc_ok_cnt++ > 5)
1099                                         priv->probe_crc = 0;
1100                         } else {
1101                                 if (priv->crc_ko_cnt++ > 5)
1102                                         priv->probe_crc = 0;
1103                         }
1104                 }
1105
1106                 /* don't CRC header when WEP in use */
1107                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1108                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1109                 }
1110                 msdu_size -= 24; /* header */
1111
1112                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1113                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1114                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1115                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1116
1117                         if (!more_fragments && packet_fragment_no == 0) {
1118                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1119                         } else {
1120                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1121                                              packet_sequence_no, packet_fragment_no, more_fragments);
1122                         }
1123                 }
1124
1125                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1126                         /* copy rest of packet into buffer */
1127                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1128
1129                         /* we use the same buffer for frag reassembly and control packets */
1130                         eth_broadcast_addr(priv->frag_source);
1131
1132                         if (priv->do_rx_crc) {
1133                                 /* last 4 octets is crc */
1134                                 msdu_size -= 4;
1135                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1136                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1137                                         priv->dev->stats.rx_crc_errors++;
1138                                         goto next;
1139                                 }
1140                         }
1141
1142                         atmel_management_frame(priv, &header, msdu_size,
1143                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1144                 }
1145
1146 next:
1147                 /* release descriptor */
1148                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1149
1150                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1151                         priv->rx_desc_head++;
1152                 else
1153                         priv->rx_desc_head = 0;
1154         }
1155 }
1156
1157 static irqreturn_t service_interrupt(int irq, void *dev_id)
1158 {
1159         struct net_device *dev = (struct net_device *) dev_id;
1160         struct atmel_private *priv = netdev_priv(dev);
1161         u8 isr;
1162         int i = -1;
1163         static const u8 irq_order[] = {
1164                 ISR_OUT_OF_RANGE,
1165                 ISR_RxCOMPLETE,
1166                 ISR_TxCOMPLETE,
1167                 ISR_RxFRAMELOST,
1168                 ISR_FATAL_ERROR,
1169                 ISR_COMMAND_COMPLETE,
1170                 ISR_IBSS_MERGE,
1171                 ISR_GENERIC_IRQ
1172         };
1173
1174         if (priv->card && priv->present_callback &&
1175             !(*priv->present_callback)(priv->card))
1176                 return IRQ_HANDLED;
1177
1178         /* In this state upper-level code assumes it can mess with
1179            the card unhampered by interrupts which may change register state.
1180            Note that even though the card shouldn't generate interrupts
1181            the inturrupt line may be shared. This allows card setup
1182            to go on without disabling interrupts for a long time. */
1183         if (priv->station_state == STATION_STATE_DOWN)
1184                 return IRQ_NONE;
1185
1186         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1187
1188         while (1) {
1189                 if (!atmel_lock_mac(priv)) {
1190                         /* failed to contact card */
1191                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1192                         return IRQ_HANDLED;
1193                 }
1194
1195                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1196                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1197
1198                 if (!isr) {
1199                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1200                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1201                 }
1202
1203                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1204
1205                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1206                         if (isr & irq_order[i])
1207                                 break;
1208
1209                 if (!atmel_lock_mac(priv)) {
1210                         /* failed to contact card */
1211                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1212                         return IRQ_HANDLED;
1213                 }
1214
1215                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1216                 isr ^= irq_order[i];
1217                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1218                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1219
1220                 switch (irq_order[i]) {
1221
1222                 case ISR_OUT_OF_RANGE:
1223                         if (priv->operating_mode == IW_MODE_INFRA &&
1224                             priv->station_state == STATION_STATE_READY) {
1225                                 priv->station_is_associated = 0;
1226                                 atmel_scan(priv, 1);
1227                         }
1228                         break;
1229
1230                 case ISR_RxFRAMELOST:
1231                         priv->wstats.discard.misc++;
1232                         /* fall through */
1233                 case ISR_RxCOMPLETE:
1234                         rx_done_irq(priv);
1235                         break;
1236
1237                 case ISR_TxCOMPLETE:
1238                         tx_done_irq(priv);
1239                         break;
1240
1241                 case ISR_FATAL_ERROR:
1242                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1243                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1244                         break;
1245
1246                 case ISR_COMMAND_COMPLETE:
1247                         atmel_command_irq(priv);
1248                         break;
1249
1250                 case ISR_IBSS_MERGE:
1251                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1252                                       priv->CurrentBSSID, 6);
1253                         /* The WPA stuff cares about the current AP address */
1254                         if (priv->use_wpa)
1255                                 build_wpa_mib(priv);
1256                         break;
1257                 case ISR_GENERIC_IRQ:
1258                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1259                         break;
1260                 }
1261         }
1262 }
1263
1264 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1265 {
1266         struct atmel_private *priv = netdev_priv(dev);
1267
1268         /* update the link quality here in case we are seeing no beacons
1269            at all to drive the process */
1270         atmel_smooth_qual(priv);
1271
1272         priv->wstats.status = priv->station_state;
1273
1274         if (priv->operating_mode == IW_MODE_INFRA) {
1275                 if (priv->station_state != STATION_STATE_READY) {
1276                         priv->wstats.qual.qual = 0;
1277                         priv->wstats.qual.level = 0;
1278                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1279                                         | IW_QUAL_LEVEL_INVALID);
1280                 }
1281                 priv->wstats.qual.noise = 0;
1282                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1283         } else {
1284                 /* Quality levels cannot be determined in ad-hoc mode,
1285                    because we can 'hear' more that one remote station. */
1286                 priv->wstats.qual.qual = 0;
1287                 priv->wstats.qual.level = 0;
1288                 priv->wstats.qual.noise = 0;
1289                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1290                                         | IW_QUAL_LEVEL_INVALID
1291                                         | IW_QUAL_NOISE_INVALID;
1292                 priv->wstats.miss.beacon = 0;
1293         }
1294
1295         return &priv->wstats;
1296 }
1297
1298 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1299 {
1300         if ((new_mtu < 68) || (new_mtu > 2312))
1301                 return -EINVAL;
1302         dev->mtu = new_mtu;
1303         return 0;
1304 }
1305
1306 static int atmel_set_mac_address(struct net_device *dev, void *p)
1307 {
1308         struct sockaddr *addr = p;
1309
1310         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1311         return atmel_open(dev);
1312 }
1313
1314 EXPORT_SYMBOL(atmel_open);
1315
1316 int atmel_open(struct net_device *dev)
1317 {
1318         struct atmel_private *priv = netdev_priv(dev);
1319         int i, channel, err;
1320
1321         /* any scheduled timer is no longer needed and might screw things up.. */
1322         del_timer_sync(&priv->management_timer);
1323
1324         /* Interrupts will not touch the card once in this state... */
1325         priv->station_state = STATION_STATE_DOWN;
1326
1327         if (priv->new_SSID_size) {
1328                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1329                 priv->SSID_size = priv->new_SSID_size;
1330                 priv->new_SSID_size = 0;
1331         }
1332         priv->BSS_list_entries = 0;
1333
1334         priv->AuthenticationRequestRetryCnt = 0;
1335         priv->AssociationRequestRetryCnt = 0;
1336         priv->ReAssociationRequestRetryCnt = 0;
1337         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1338         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1339
1340         priv->site_survey_state = SITE_SURVEY_IDLE;
1341         priv->station_is_associated = 0;
1342
1343         err = reset_atmel_card(dev);
1344         if (err)
1345                 return err;
1346
1347         if (priv->config_reg_domain) {
1348                 priv->reg_domain = priv->config_reg_domain;
1349                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1350         } else {
1351                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1352                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1353                         if (priv->reg_domain == channel_table[i].reg_domain)
1354                                 break;
1355                 if (i == ARRAY_SIZE(channel_table)) {
1356                         priv->reg_domain = REG_DOMAIN_MKK1;
1357                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1358                 }
1359         }
1360
1361         if ((channel = atmel_validate_channel(priv, priv->channel)))
1362                 priv->channel = channel;
1363
1364         /* this moves station_state on.... */
1365         atmel_scan(priv, 1);
1366
1367         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1368         return 0;
1369 }
1370
1371 static int atmel_close(struct net_device *dev)
1372 {
1373         struct atmel_private *priv = netdev_priv(dev);
1374
1375         /* Send event to userspace that we are disassociating */
1376         if (priv->station_state == STATION_STATE_READY) {
1377                 union iwreq_data wrqu;
1378
1379                 wrqu.data.length = 0;
1380                 wrqu.data.flags = 0;
1381                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1382                 eth_zero_addr(wrqu.ap_addr.sa_data);
1383                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1384         }
1385
1386         atmel_enter_state(priv, STATION_STATE_DOWN);
1387
1388         if (priv->bus_type == BUS_TYPE_PCCARD)
1389                 atmel_write16(dev, GCR, 0x0060);
1390         atmel_write16(dev, GCR, 0x0040);
1391         return 0;
1392 }
1393
1394 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1395 {
1396         /* check that channel is OK, if so return zero,
1397            else return suitable default channel */
1398         int i;
1399
1400         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1401                 if (priv->reg_domain == channel_table[i].reg_domain) {
1402                         if (channel >= channel_table[i].min &&
1403                             channel <= channel_table[i].max)
1404                                 return 0;
1405                         else
1406                                 return channel_table[i].min;
1407                 }
1408         return 0;
1409 }
1410
1411 static int atmel_proc_show(struct seq_file *m, void *v)
1412 {
1413         struct atmel_private *priv = m->private;
1414         int i;
1415         char *s, *r, *c;
1416
1417         seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1418
1419         if (priv->station_state != STATION_STATE_DOWN) {
1420                 seq_printf(m,
1421                            "Firmware version:\t%d.%d build %d\n"
1422                            "Firmware location:\t",
1423                            priv->host_info.major_version,
1424                            priv->host_info.minor_version,
1425                            priv->host_info.build_version);
1426
1427                 if (priv->card_type != CARD_TYPE_EEPROM)
1428                         seq_puts(m, "on card\n");
1429                 else if (priv->firmware)
1430                         seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1431                 else
1432                         seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1433
1434                 switch (priv->card_type) {
1435                 case CARD_TYPE_PARALLEL_FLASH:
1436                         c = "Parallel flash";
1437                         break;
1438                 case CARD_TYPE_SPI_FLASH:
1439                         c = "SPI flash\n";
1440                         break;
1441                 case CARD_TYPE_EEPROM:
1442                         c = "EEPROM";
1443                         break;
1444                 default:
1445                         c = "<unknown>";
1446                 }
1447
1448                 r = "<unknown>";
1449                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1450                         if (priv->reg_domain == channel_table[i].reg_domain)
1451                                 r = channel_table[i].name;
1452
1453                 seq_printf(m, "MAC memory type:\t%s\n", c);
1454                 seq_printf(m, "Regulatory domain:\t%s\n", r);
1455                 seq_printf(m, "Host CRC checking:\t%s\n",
1456                          priv->do_rx_crc ? "On" : "Off");
1457                 seq_printf(m, "WPA-capable firmware:\t%s\n",
1458                          priv->use_wpa ? "Yes" : "No");
1459         }
1460
1461         switch (priv->station_state) {
1462         case STATION_STATE_SCANNING:
1463                 s = "Scanning";
1464                 break;
1465         case STATION_STATE_JOINNING:
1466                 s = "Joining";
1467                 break;
1468         case STATION_STATE_AUTHENTICATING:
1469                 s = "Authenticating";
1470                 break;
1471         case STATION_STATE_ASSOCIATING:
1472                 s = "Associating";
1473                 break;
1474         case STATION_STATE_READY:
1475                 s = "Ready";
1476                 break;
1477         case STATION_STATE_REASSOCIATING:
1478                 s = "Reassociating";
1479                 break;
1480         case STATION_STATE_MGMT_ERROR:
1481                 s = "Management error";
1482                 break;
1483         case STATION_STATE_DOWN:
1484                 s = "Down";
1485                 break;
1486         default:
1487                 s = "<unknown>";
1488         }
1489
1490         seq_printf(m, "Current state:\t\t%s\n", s);
1491         return 0;
1492 }
1493
1494 static int atmel_proc_open(struct inode *inode, struct file *file)
1495 {
1496         return single_open(file, atmel_proc_show, PDE_DATA(inode));
1497 }
1498
1499 static const struct file_operations atmel_proc_fops = {
1500         .open           = atmel_proc_open,
1501         .read           = seq_read,
1502         .llseek         = seq_lseek,
1503         .release        = single_release,
1504 };
1505
1506 static const struct net_device_ops atmel_netdev_ops = {
1507         .ndo_open               = atmel_open,
1508         .ndo_stop               = atmel_close,
1509         .ndo_change_mtu         = atmel_change_mtu,
1510         .ndo_set_mac_address    = atmel_set_mac_address,
1511         .ndo_start_xmit         = start_tx,
1512         .ndo_do_ioctl           = atmel_ioctl,
1513         .ndo_validate_addr      = eth_validate_addr,
1514 };
1515
1516 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1517                                    const AtmelFWType fw_type,
1518                                    struct device *sys_dev,
1519                                    int (*card_present)(void *), void *card)
1520 {
1521         struct net_device *dev;
1522         struct atmel_private *priv;
1523         int rc;
1524
1525         /* Create the network device object. */
1526         dev = alloc_etherdev(sizeof(*priv));
1527         if (!dev)
1528                 return NULL;
1529
1530         if (dev_alloc_name(dev, dev->name) < 0) {
1531                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1532                 goto err_out_free;
1533         }
1534
1535         priv = netdev_priv(dev);
1536         priv->dev = dev;
1537         priv->sys_dev = sys_dev;
1538         priv->present_callback = card_present;
1539         priv->card = card;
1540         priv->firmware = NULL;
1541         priv->firmware_id[0] = '\0';
1542         priv->firmware_type = fw_type;
1543         if (firmware) /* module parameter */
1544                 strcpy(priv->firmware_id, firmware);
1545         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1546         priv->station_state = STATION_STATE_DOWN;
1547         priv->do_rx_crc = 0;
1548         /* For PCMCIA cards, some chips need CRC, some don't
1549            so we have to probe. */
1550         if (priv->bus_type == BUS_TYPE_PCCARD) {
1551                 priv->probe_crc = 1;
1552                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1553         } else
1554                 priv->probe_crc = 0;
1555         priv->last_qual = jiffies;
1556         priv->last_beacon_timestamp = 0;
1557         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1558         eth_zero_addr(priv->BSSID);
1559         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1560         priv->station_was_associated = 0;
1561
1562         priv->last_survey = jiffies;
1563         priv->preamble = LONG_PREAMBLE;
1564         priv->operating_mode = IW_MODE_INFRA;
1565         priv->connect_to_any_BSS = 0;
1566         priv->config_reg_domain = 0;
1567         priv->reg_domain = 0;
1568         priv->tx_rate = 3;
1569         priv->auto_tx_rate = 1;
1570         priv->channel = 4;
1571         priv->power_mode = 0;
1572         priv->SSID[0] = '\0';
1573         priv->SSID_size = 0;
1574         priv->new_SSID_size = 0;
1575         priv->frag_threshold = 2346;
1576         priv->rts_threshold = 2347;
1577         priv->short_retry = 7;
1578         priv->long_retry = 4;
1579
1580         priv->wep_is_on = 0;
1581         priv->default_key = 0;
1582         priv->encryption_level = 0;
1583         priv->exclude_unencrypted = 0;
1584         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1585         priv->use_wpa = 0;
1586         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1587         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1588
1589         priv->default_beacon_period = priv->beacon_period = 100;
1590         priv->listen_interval = 1;
1591
1592         init_timer(&priv->management_timer);
1593         spin_lock_init(&priv->irqlock);
1594         spin_lock_init(&priv->timerlock);
1595         priv->management_timer.function = atmel_management_timer;
1596         priv->management_timer.data = (unsigned long) dev;
1597
1598         dev->netdev_ops = &atmel_netdev_ops;
1599         dev->wireless_handlers = &atmel_handler_def;
1600         dev->irq = irq;
1601         dev->base_addr = port;
1602
1603         SET_NETDEV_DEV(dev, sys_dev);
1604
1605         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1606                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1607                 goto err_out_free;
1608         }
1609
1610         if (!request_region(dev->base_addr, 32,
1611                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1612                 goto err_out_irq;
1613         }
1614
1615         if (register_netdev(dev))
1616                 goto err_out_res;
1617
1618         if (!probe_atmel_card(dev)) {
1619                 unregister_netdev(dev);
1620                 goto err_out_res;
1621         }
1622
1623         netif_carrier_off(dev);
1624
1625         if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv))
1626                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1627
1628         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1629                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1630
1631         return dev;
1632
1633 err_out_res:
1634         release_region(dev->base_addr, 32);
1635 err_out_irq:
1636         free_irq(dev->irq, dev);
1637 err_out_free:
1638         free_netdev(dev);
1639         return NULL;
1640 }
1641
1642 EXPORT_SYMBOL(init_atmel_card);
1643
1644 void stop_atmel_card(struct net_device *dev)
1645 {
1646         struct atmel_private *priv = netdev_priv(dev);
1647
1648         /* put a brick on it... */
1649         if (priv->bus_type == BUS_TYPE_PCCARD)
1650                 atmel_write16(dev, GCR, 0x0060);
1651         atmel_write16(dev, GCR, 0x0040);
1652
1653         del_timer_sync(&priv->management_timer);
1654         unregister_netdev(dev);
1655         remove_proc_entry("driver/atmel", NULL);
1656         free_irq(dev->irq, dev);
1657         kfree(priv->firmware);
1658         release_region(dev->base_addr, 32);
1659         free_netdev(dev);
1660 }
1661
1662 EXPORT_SYMBOL(stop_atmel_card);
1663
1664 static int atmel_set_essid(struct net_device *dev,
1665                            struct iw_request_info *info,
1666                            struct iw_point *dwrq,
1667                            char *extra)
1668 {
1669         struct atmel_private *priv = netdev_priv(dev);
1670
1671         /* Check if we asked for `any' */
1672         if (dwrq->flags == 0) {
1673                 priv->connect_to_any_BSS = 1;
1674         } else {
1675                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1676
1677                 priv->connect_to_any_BSS = 0;
1678
1679                 /* Check the size of the string */
1680                 if (dwrq->length > MAX_SSID_LENGTH)
1681                          return -E2BIG;
1682                 if (index != 0)
1683                         return -EINVAL;
1684
1685                 memcpy(priv->new_SSID, extra, dwrq->length);
1686                 priv->new_SSID_size = dwrq->length;
1687         }
1688
1689         return -EINPROGRESS;
1690 }
1691
1692 static int atmel_get_essid(struct net_device *dev,
1693                            struct iw_request_info *info,
1694                            struct iw_point *dwrq,
1695                            char *extra)
1696 {
1697         struct atmel_private *priv = netdev_priv(dev);
1698
1699         /* Get the current SSID */
1700         if (priv->new_SSID_size != 0) {
1701                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1702                 dwrq->length = priv->new_SSID_size;
1703         } else {
1704                 memcpy(extra, priv->SSID, priv->SSID_size);
1705                 dwrq->length = priv->SSID_size;
1706         }
1707
1708         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1709
1710         return 0;
1711 }
1712
1713 static int atmel_get_wap(struct net_device *dev,
1714                          struct iw_request_info *info,
1715                          struct sockaddr *awrq,
1716                          char *extra)
1717 {
1718         struct atmel_private *priv = netdev_priv(dev);
1719         memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1720         awrq->sa_family = ARPHRD_ETHER;
1721
1722         return 0;
1723 }
1724
1725 static int atmel_set_encode(struct net_device *dev,
1726                             struct iw_request_info *info,
1727                             struct iw_point *dwrq,
1728                             char *extra)
1729 {
1730         struct atmel_private *priv = netdev_priv(dev);
1731
1732         /* Basic checking: do we have a key to set ?
1733          * Note : with the new API, it's impossible to get a NULL pointer.
1734          * Therefore, we need to check a key size == 0 instead.
1735          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1736          * when no key is present (only change flags), but older versions
1737          * don't do it. - Jean II */
1738         if (dwrq->length > 0) {
1739                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1740                 int current_index = priv->default_key;
1741                 /* Check the size of the key */
1742                 if (dwrq->length > 13) {
1743                         return -EINVAL;
1744                 }
1745                 /* Check the index (none -> use current) */
1746                 if (index < 0 || index >= 4)
1747                         index = current_index;
1748                 else
1749                         priv->default_key = index;
1750                 /* Set the length */
1751                 if (dwrq->length > 5)
1752                         priv->wep_key_len[index] = 13;
1753                 else
1754                         if (dwrq->length > 0)
1755                                 priv->wep_key_len[index] = 5;
1756                         else
1757                                 /* Disable the key */
1758                                 priv->wep_key_len[index] = 0;
1759                 /* Check if the key is not marked as invalid */
1760                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1761                         /* Cleanup */
1762                         memset(priv->wep_keys[index], 0, 13);
1763                         /* Copy the key in the driver */
1764                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1765                 }
1766                 /* WE specify that if a valid key is set, encryption
1767                  * should be enabled (user may turn it off later)
1768                  * This is also how "iwconfig ethX key on" works */
1769                 if (index == current_index &&
1770                     priv->wep_key_len[index] > 0) {
1771                         priv->wep_is_on = 1;
1772                         priv->exclude_unencrypted = 1;
1773                         if (priv->wep_key_len[index] > 5) {
1774                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1775                                 priv->encryption_level = 2;
1776                         } else {
1777                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1778                                 priv->encryption_level = 1;
1779                         }
1780                 }
1781         } else {
1782                 /* Do we want to just set the transmit key index ? */
1783                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1784                 if (index >= 0 && index < 4) {
1785                         priv->default_key = index;
1786                 } else
1787                         /* Don't complain if only change the mode */
1788                         if (!(dwrq->flags & IW_ENCODE_MODE))
1789                                 return -EINVAL;
1790         }
1791         /* Read the flags */
1792         if (dwrq->flags & IW_ENCODE_DISABLED) {
1793                 priv->wep_is_on = 0;
1794                 priv->encryption_level = 0;
1795                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1796         } else {
1797                 priv->wep_is_on = 1;
1798                 if (priv->wep_key_len[priv->default_key] > 5) {
1799                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1800                         priv->encryption_level = 2;
1801                 } else {
1802                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1803                         priv->encryption_level = 1;
1804                 }
1805         }
1806         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1807                 priv->exclude_unencrypted = 1;
1808         if (dwrq->flags & IW_ENCODE_OPEN)
1809                 priv->exclude_unencrypted = 0;
1810
1811         return -EINPROGRESS;            /* Call commit handler */
1812 }
1813
1814 static int atmel_get_encode(struct net_device *dev,
1815                             struct iw_request_info *info,
1816                             struct iw_point *dwrq,
1817                             char *extra)
1818 {
1819         struct atmel_private *priv = netdev_priv(dev);
1820         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1821
1822         if (!priv->wep_is_on)
1823                 dwrq->flags = IW_ENCODE_DISABLED;
1824         else {
1825                 if (priv->exclude_unencrypted)
1826                         dwrq->flags = IW_ENCODE_RESTRICTED;
1827                 else
1828                         dwrq->flags = IW_ENCODE_OPEN;
1829         }
1830                 /* Which key do we want ? -1 -> tx index */
1831         if (index < 0 || index >= 4)
1832                 index = priv->default_key;
1833         dwrq->flags |= index + 1;
1834         /* Copy the key to the user buffer */
1835         dwrq->length = priv->wep_key_len[index];
1836         if (dwrq->length > 16) {
1837                 dwrq->length = 0;
1838         } else {
1839                 memset(extra, 0, 16);
1840                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1841         }
1842
1843         return 0;
1844 }
1845
1846 static int atmel_set_encodeext(struct net_device *dev,
1847                             struct iw_request_info *info,
1848                             union iwreq_data *wrqu,
1849                             char *extra)
1850 {
1851         struct atmel_private *priv = netdev_priv(dev);
1852         struct iw_point *encoding = &wrqu->encoding;
1853         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1854         int idx, key_len, alg = ext->alg, set_key = 1;
1855
1856         /* Determine and validate the key index */
1857         idx = encoding->flags & IW_ENCODE_INDEX;
1858         if (idx) {
1859                 if (idx < 1 || idx > 4)
1860                         return -EINVAL;
1861                 idx--;
1862         } else
1863                 idx = priv->default_key;
1864
1865         if (encoding->flags & IW_ENCODE_DISABLED)
1866             alg = IW_ENCODE_ALG_NONE;
1867
1868         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1869                 priv->default_key = idx;
1870                 set_key = ext->key_len > 0 ? 1 : 0;
1871         }
1872
1873         if (set_key) {
1874                 /* Set the requested key first */
1875                 switch (alg) {
1876                 case IW_ENCODE_ALG_NONE:
1877                         priv->wep_is_on = 0;
1878                         priv->encryption_level = 0;
1879                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1880                         break;
1881                 case IW_ENCODE_ALG_WEP:
1882                         if (ext->key_len > 5) {
1883                                 priv->wep_key_len[idx] = 13;
1884                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1885                                 priv->encryption_level = 2;
1886                         } else if (ext->key_len > 0) {
1887                                 priv->wep_key_len[idx] = 5;
1888                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1889                                 priv->encryption_level = 1;
1890                         } else {
1891                                 return -EINVAL;
1892                         }
1893                         priv->wep_is_on = 1;
1894                         memset(priv->wep_keys[idx], 0, 13);
1895                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1896                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1897                         break;
1898                 default:
1899                         return -EINVAL;
1900                 }
1901         }
1902
1903         return -EINPROGRESS;
1904 }
1905
1906 static int atmel_get_encodeext(struct net_device *dev,
1907                             struct iw_request_info *info,
1908                             union iwreq_data *wrqu,
1909                             char *extra)
1910 {
1911         struct atmel_private *priv = netdev_priv(dev);
1912         struct iw_point *encoding = &wrqu->encoding;
1913         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1914         int idx, max_key_len;
1915
1916         max_key_len = encoding->length - sizeof(*ext);
1917         if (max_key_len < 0)
1918                 return -EINVAL;
1919
1920         idx = encoding->flags & IW_ENCODE_INDEX;
1921         if (idx) {
1922                 if (idx < 1 || idx > 4)
1923                         return -EINVAL;
1924                 idx--;
1925         } else
1926                 idx = priv->default_key;
1927
1928         encoding->flags = idx + 1;
1929         memset(ext, 0, sizeof(*ext));
1930
1931         if (!priv->wep_is_on) {
1932                 ext->alg = IW_ENCODE_ALG_NONE;
1933                 ext->key_len = 0;
1934                 encoding->flags |= IW_ENCODE_DISABLED;
1935         } else {
1936                 if (priv->encryption_level > 0)
1937                         ext->alg = IW_ENCODE_ALG_WEP;
1938                 else
1939                         return -EINVAL;
1940
1941                 ext->key_len = priv->wep_key_len[idx];
1942                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1943                 encoding->flags |= IW_ENCODE_ENABLED;
1944         }
1945
1946         return 0;
1947 }
1948
1949 static int atmel_set_auth(struct net_device *dev,
1950                                struct iw_request_info *info,
1951                                union iwreq_data *wrqu, char *extra)
1952 {
1953         struct atmel_private *priv = netdev_priv(dev);
1954         struct iw_param *param = &wrqu->param;
1955
1956         switch (param->flags & IW_AUTH_INDEX) {
1957         case IW_AUTH_WPA_VERSION:
1958         case IW_AUTH_CIPHER_PAIRWISE:
1959         case IW_AUTH_CIPHER_GROUP:
1960         case IW_AUTH_KEY_MGMT:
1961         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1962         case IW_AUTH_PRIVACY_INVOKED:
1963                 /*
1964                  * atmel does not use these parameters
1965                  */
1966                 break;
1967
1968         case IW_AUTH_DROP_UNENCRYPTED:
1969                 priv->exclude_unencrypted = param->value ? 1 : 0;
1970                 break;
1971
1972         case IW_AUTH_80211_AUTH_ALG: {
1973                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1974                                 priv->exclude_unencrypted = 1;
1975                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1976                                 priv->exclude_unencrypted = 0;
1977                         } else
1978                                 return -EINVAL;
1979                         break;
1980                 }
1981
1982         case IW_AUTH_WPA_ENABLED:
1983                 /* Silently accept disable of WPA */
1984                 if (param->value > 0)
1985                         return -EOPNOTSUPP;
1986                 break;
1987
1988         default:
1989                 return -EOPNOTSUPP;
1990         }
1991         return -EINPROGRESS;
1992 }
1993
1994 static int atmel_get_auth(struct net_device *dev,
1995                                struct iw_request_info *info,
1996                                union iwreq_data *wrqu, char *extra)
1997 {
1998         struct atmel_private *priv = netdev_priv(dev);
1999         struct iw_param *param = &wrqu->param;
2000
2001         switch (param->flags & IW_AUTH_INDEX) {
2002         case IW_AUTH_DROP_UNENCRYPTED:
2003                 param->value = priv->exclude_unencrypted;
2004                 break;
2005
2006         case IW_AUTH_80211_AUTH_ALG:
2007                 if (priv->exclude_unencrypted == 1)
2008                         param->value = IW_AUTH_ALG_SHARED_KEY;
2009                 else
2010                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2011                 break;
2012
2013         case IW_AUTH_WPA_ENABLED:
2014                 param->value = 0;
2015                 break;
2016
2017         default:
2018                 return -EOPNOTSUPP;
2019         }
2020         return 0;
2021 }
2022
2023
2024 static int atmel_get_name(struct net_device *dev,
2025                           struct iw_request_info *info,
2026                           char *cwrq,
2027                           char *extra)
2028 {
2029         strcpy(cwrq, "IEEE 802.11-DS");
2030         return 0;
2031 }
2032
2033 static int atmel_set_rate(struct net_device *dev,
2034                           struct iw_request_info *info,
2035                           struct iw_param *vwrq,
2036                           char *extra)
2037 {
2038         struct atmel_private *priv = netdev_priv(dev);
2039
2040         if (vwrq->fixed == 0) {
2041                 priv->tx_rate = 3;
2042                 priv->auto_tx_rate = 1;
2043         } else {
2044                 priv->auto_tx_rate = 0;
2045
2046                 /* Which type of value ? */
2047                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2048                         /* Setting by rate index */
2049                         priv->tx_rate = vwrq->value;
2050                 } else {
2051                 /* Setting by frequency value */
2052                         switch (vwrq->value) {
2053                         case  1000000:
2054                                 priv->tx_rate = 0;
2055                                 break;
2056                         case  2000000:
2057                                 priv->tx_rate = 1;
2058                                 break;
2059                         case  5500000:
2060                                 priv->tx_rate = 2;
2061                                 break;
2062                         case 11000000:
2063                                 priv->tx_rate = 3;
2064                                 break;
2065                         default:
2066                                 return -EINVAL;
2067                         }
2068                 }
2069         }
2070
2071         return -EINPROGRESS;
2072 }
2073
2074 static int atmel_set_mode(struct net_device *dev,
2075                           struct iw_request_info *info,
2076                           __u32 *uwrq,
2077                           char *extra)
2078 {
2079         struct atmel_private *priv = netdev_priv(dev);
2080
2081         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2082                 return -EINVAL;
2083
2084         priv->operating_mode = *uwrq;
2085         return -EINPROGRESS;
2086 }
2087
2088 static int atmel_get_mode(struct net_device *dev,
2089                           struct iw_request_info *info,
2090                           __u32 *uwrq,
2091                           char *extra)
2092 {
2093         struct atmel_private *priv = netdev_priv(dev);
2094
2095         *uwrq = priv->operating_mode;
2096         return 0;
2097 }
2098
2099 static int atmel_get_rate(struct net_device *dev,
2100                          struct iw_request_info *info,
2101                          struct iw_param *vwrq,
2102                          char *extra)
2103 {
2104         struct atmel_private *priv = netdev_priv(dev);
2105
2106         if (priv->auto_tx_rate) {
2107                 vwrq->fixed = 0;
2108                 vwrq->value = 11000000;
2109         } else {
2110                 vwrq->fixed = 1;
2111                 switch (priv->tx_rate) {
2112                 case 0:
2113                         vwrq->value =  1000000;
2114                         break;
2115                 case 1:
2116                         vwrq->value =  2000000;
2117                         break;
2118                 case 2:
2119                         vwrq->value =  5500000;
2120                         break;
2121                 case 3:
2122                         vwrq->value = 11000000;
2123                         break;
2124                 }
2125         }
2126         return 0;
2127 }
2128
2129 static int atmel_set_power(struct net_device *dev,
2130                            struct iw_request_info *info,
2131                            struct iw_param *vwrq,
2132                            char *extra)
2133 {
2134         struct atmel_private *priv = netdev_priv(dev);
2135         priv->power_mode = vwrq->disabled ? 0 : 1;
2136         return -EINPROGRESS;
2137 }
2138
2139 static int atmel_get_power(struct net_device *dev,
2140                            struct iw_request_info *info,
2141                            struct iw_param *vwrq,
2142                            char *extra)
2143 {
2144         struct atmel_private *priv = netdev_priv(dev);
2145         vwrq->disabled = priv->power_mode ? 0 : 1;
2146         vwrq->flags = IW_POWER_ON;
2147         return 0;
2148 }
2149
2150 static int atmel_set_retry(struct net_device *dev,
2151                            struct iw_request_info *info,
2152                            struct iw_param *vwrq,
2153                            char *extra)
2154 {
2155         struct atmel_private *priv = netdev_priv(dev);
2156
2157         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2158                 if (vwrq->flags & IW_RETRY_LONG)
2159                         priv->long_retry = vwrq->value;
2160                 else if (vwrq->flags & IW_RETRY_SHORT)
2161                         priv->short_retry = vwrq->value;
2162                 else {
2163                         /* No modifier : set both */
2164                         priv->long_retry = vwrq->value;
2165                         priv->short_retry = vwrq->value;
2166                 }
2167                 return -EINPROGRESS;
2168         }
2169
2170         return -EINVAL;
2171 }
2172
2173 static int atmel_get_retry(struct net_device *dev,
2174                            struct iw_request_info *info,
2175                            struct iw_param *vwrq,
2176                            char *extra)
2177 {
2178         struct atmel_private *priv = netdev_priv(dev);
2179
2180         vwrq->disabled = 0;      /* Can't be disabled */
2181
2182         /* Note : by default, display the short retry number */
2183         if (vwrq->flags & IW_RETRY_LONG) {
2184                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2185                 vwrq->value = priv->long_retry;
2186         } else {
2187                 vwrq->flags = IW_RETRY_LIMIT;
2188                 vwrq->value = priv->short_retry;
2189                 if (priv->long_retry != priv->short_retry)
2190                         vwrq->flags |= IW_RETRY_SHORT;
2191         }
2192
2193         return 0;
2194 }
2195
2196 static int atmel_set_rts(struct net_device *dev,
2197                          struct iw_request_info *info,
2198                          struct iw_param *vwrq,
2199                          char *extra)
2200 {
2201         struct atmel_private *priv = netdev_priv(dev);
2202         int rthr = vwrq->value;
2203
2204         if (vwrq->disabled)
2205                 rthr = 2347;
2206         if ((rthr < 0) || (rthr > 2347)) {
2207                 return -EINVAL;
2208         }
2209         priv->rts_threshold = rthr;
2210
2211         return -EINPROGRESS;            /* Call commit handler */
2212 }
2213
2214 static int atmel_get_rts(struct net_device *dev,
2215                          struct iw_request_info *info,
2216                          struct iw_param *vwrq,
2217                          char *extra)
2218 {
2219         struct atmel_private *priv = netdev_priv(dev);
2220
2221         vwrq->value = priv->rts_threshold;
2222         vwrq->disabled = (vwrq->value >= 2347);
2223         vwrq->fixed = 1;
2224
2225         return 0;
2226 }
2227
2228 static int atmel_set_frag(struct net_device *dev,
2229                           struct iw_request_info *info,
2230                           struct iw_param *vwrq,
2231                           char *extra)
2232 {
2233         struct atmel_private *priv = netdev_priv(dev);
2234         int fthr = vwrq->value;
2235
2236         if (vwrq->disabled)
2237                 fthr = 2346;
2238         if ((fthr < 256) || (fthr > 2346)) {
2239                 return -EINVAL;
2240         }
2241         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2242         priv->frag_threshold = fthr;
2243
2244         return -EINPROGRESS;            /* Call commit handler */
2245 }
2246
2247 static int atmel_get_frag(struct net_device *dev,
2248                           struct iw_request_info *info,
2249                           struct iw_param *vwrq,
2250                           char *extra)
2251 {
2252         struct atmel_private *priv = netdev_priv(dev);
2253
2254         vwrq->value = priv->frag_threshold;
2255         vwrq->disabled = (vwrq->value >= 2346);
2256         vwrq->fixed = 1;
2257
2258         return 0;
2259 }
2260
2261 static int atmel_set_freq(struct net_device *dev,
2262                           struct iw_request_info *info,
2263                           struct iw_freq *fwrq,
2264                           char *extra)
2265 {
2266         struct atmel_private *priv = netdev_priv(dev);
2267         int rc = -EINPROGRESS;          /* Call commit handler */
2268
2269         /* If setting by frequency, convert to a channel */
2270         if (fwrq->e == 1) {
2271                 int f = fwrq->m / 100000;
2272
2273                 /* Hack to fall through... */
2274                 fwrq->e = 0;
2275                 fwrq->m = ieee80211_frequency_to_channel(f);
2276         }
2277         /* Setting by channel number */
2278         if ((fwrq->m > 1000) || (fwrq->e > 0))
2279                 rc = -EOPNOTSUPP;
2280         else {
2281                 int channel = fwrq->m;
2282                 if (atmel_validate_channel(priv, channel) == 0) {
2283                         priv->channel = channel;
2284                 } else {
2285                         rc = -EINVAL;
2286                 }
2287         }
2288         return rc;
2289 }
2290
2291 static int atmel_get_freq(struct net_device *dev,
2292                           struct iw_request_info *info,
2293                           struct iw_freq *fwrq,
2294                           char *extra)
2295 {
2296         struct atmel_private *priv = netdev_priv(dev);
2297
2298         fwrq->m = priv->channel;
2299         fwrq->e = 0;
2300         return 0;
2301 }
2302
2303 static int atmel_set_scan(struct net_device *dev,
2304                           struct iw_request_info *info,
2305                           struct iw_point *dwrq,
2306                           char *extra)
2307 {
2308         struct atmel_private *priv = netdev_priv(dev);
2309         unsigned long flags;
2310
2311         /* Note : you may have realised that, as this is a SET operation,
2312          * this is privileged and therefore a normal user can't
2313          * perform scanning.
2314          * This is not an error, while the device perform scanning,
2315          * traffic doesn't flow, so it's a perfect DoS...
2316          * Jean II */
2317
2318         if (priv->station_state == STATION_STATE_DOWN)
2319                 return -EAGAIN;
2320
2321         /* Timeout old surveys. */
2322         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2323                 priv->site_survey_state = SITE_SURVEY_IDLE;
2324         priv->last_survey = jiffies;
2325
2326         /* Initiate a scan command */
2327         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2328                 return -EBUSY;
2329
2330         del_timer_sync(&priv->management_timer);
2331         spin_lock_irqsave(&priv->irqlock, flags);
2332
2333         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2334         priv->fast_scan = 0;
2335         atmel_scan(priv, 0);
2336         spin_unlock_irqrestore(&priv->irqlock, flags);
2337
2338         return 0;
2339 }
2340
2341 static int atmel_get_scan(struct net_device *dev,
2342                           struct iw_request_info *info,
2343                           struct iw_point *dwrq,
2344                           char *extra)
2345 {
2346         struct atmel_private *priv = netdev_priv(dev);
2347         int i;
2348         char *current_ev = extra;
2349         struct iw_event iwe;
2350
2351         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2352                 return -EAGAIN;
2353
2354         for (i = 0; i < priv->BSS_list_entries; i++) {
2355                 iwe.cmd = SIOCGIWAP;
2356                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2357                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2358                 current_ev = iwe_stream_add_event(info, current_ev,
2359                                                   extra + IW_SCAN_MAX_DATA,
2360                                                   &iwe, IW_EV_ADDR_LEN);
2361
2362                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2363                 if (iwe.u.data.length > 32)
2364                         iwe.u.data.length = 32;
2365                 iwe.cmd = SIOCGIWESSID;
2366                 iwe.u.data.flags = 1;
2367                 current_ev = iwe_stream_add_point(info, current_ev,
2368                                                   extra + IW_SCAN_MAX_DATA,
2369                                                   &iwe, priv->BSSinfo[i].SSID);
2370
2371                 iwe.cmd = SIOCGIWMODE;
2372                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2373                 current_ev = iwe_stream_add_event(info, current_ev,
2374                                                   extra + IW_SCAN_MAX_DATA,
2375                                                   &iwe, IW_EV_UINT_LEN);
2376
2377                 iwe.cmd = SIOCGIWFREQ;
2378                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2379                 iwe.u.freq.e = 0;
2380                 current_ev = iwe_stream_add_event(info, current_ev,
2381                                                   extra + IW_SCAN_MAX_DATA,
2382                                                   &iwe, IW_EV_FREQ_LEN);
2383
2384                 /* Add quality statistics */
2385                 iwe.cmd = IWEVQUAL;
2386                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2387                 iwe.u.qual.qual  = iwe.u.qual.level;
2388                 /* iwe.u.qual.noise  = SOMETHING */
2389                 current_ev = iwe_stream_add_event(info, current_ev,
2390                                                   extra + IW_SCAN_MAX_DATA,
2391                                                   &iwe, IW_EV_QUAL_LEN);
2392
2393
2394                 iwe.cmd = SIOCGIWENCODE;
2395                 if (priv->BSSinfo[i].UsingWEP)
2396                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2397                 else
2398                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2399                 iwe.u.data.length = 0;
2400                 current_ev = iwe_stream_add_point(info, current_ev,
2401                                                   extra + IW_SCAN_MAX_DATA,
2402                                                   &iwe, NULL);
2403         }
2404
2405         /* Length of data */
2406         dwrq->length = (current_ev - extra);
2407         dwrq->flags = 0;
2408
2409         return 0;
2410 }
2411
2412 static int atmel_get_range(struct net_device *dev,
2413                            struct iw_request_info *info,
2414                            struct iw_point *dwrq,
2415                            char *extra)
2416 {
2417         struct atmel_private *priv = netdev_priv(dev);
2418         struct iw_range *range = (struct iw_range *) extra;
2419         int k, i, j;
2420
2421         dwrq->length = sizeof(struct iw_range);
2422         memset(range, 0, sizeof(struct iw_range));
2423         range->min_nwid = 0x0000;
2424         range->max_nwid = 0x0000;
2425         range->num_channels = 0;
2426         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2427                 if (priv->reg_domain == channel_table[j].reg_domain) {
2428                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2429                         break;
2430                 }
2431         if (range->num_channels != 0) {
2432                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2433                         range->freq[k].i = i; /* List index */
2434
2435                         /* Values in MHz -> * 10^5 * 10 */
2436                         range->freq[k].m = 100000 *
2437                          ieee80211_channel_to_frequency(i, IEEE80211_BAND_2GHZ);
2438                         range->freq[k++].e = 1;
2439                 }
2440                 range->num_frequency = k;
2441         }
2442
2443         range->max_qual.qual = 100;
2444         range->max_qual.level = 100;
2445         range->max_qual.noise = 0;
2446         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2447
2448         range->avg_qual.qual = 50;
2449         range->avg_qual.level = 50;
2450         range->avg_qual.noise = 0;
2451         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2452
2453         range->sensitivity = 0;
2454
2455         range->bitrate[0] =  1000000;
2456         range->bitrate[1] =  2000000;
2457         range->bitrate[2] =  5500000;
2458         range->bitrate[3] = 11000000;
2459         range->num_bitrates = 4;
2460
2461         range->min_rts = 0;
2462         range->max_rts = 2347;
2463         range->min_frag = 256;
2464         range->max_frag = 2346;
2465
2466         range->encoding_size[0] = 5;
2467         range->encoding_size[1] = 13;
2468         range->num_encoding_sizes = 2;
2469         range->max_encoding_tokens = 4;
2470
2471         range->pmp_flags = IW_POWER_ON;
2472         range->pmt_flags = IW_POWER_ON;
2473         range->pm_capa = 0;
2474
2475         range->we_version_source = WIRELESS_EXT;
2476         range->we_version_compiled = WIRELESS_EXT;
2477         range->retry_capa = IW_RETRY_LIMIT ;
2478         range->retry_flags = IW_RETRY_LIMIT;
2479         range->r_time_flags = 0;
2480         range->min_retry = 1;
2481         range->max_retry = 65535;
2482
2483         return 0;
2484 }
2485
2486 static int atmel_set_wap(struct net_device *dev,
2487                          struct iw_request_info *info,
2488                          struct sockaddr *awrq,
2489                          char *extra)
2490 {
2491         struct atmel_private *priv = netdev_priv(dev);
2492         int i;
2493         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2494         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2495         unsigned long flags;
2496
2497         if (awrq->sa_family != ARPHRD_ETHER)
2498                 return -EINVAL;
2499
2500         if (!memcmp(any, awrq->sa_data, 6) ||
2501             !memcmp(off, awrq->sa_data, 6)) {
2502                 del_timer_sync(&priv->management_timer);
2503                 spin_lock_irqsave(&priv->irqlock, flags);
2504                 atmel_scan(priv, 1);
2505                 spin_unlock_irqrestore(&priv->irqlock, flags);
2506                 return 0;
2507         }
2508
2509         for (i = 0; i < priv->BSS_list_entries; i++) {
2510                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2511                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2512                                 return -EINVAL;
2513                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2514                                 return -EINVAL;
2515                         } else {
2516                                 del_timer_sync(&priv->management_timer);
2517                                 spin_lock_irqsave(&priv->irqlock, flags);
2518                                 atmel_join_bss(priv, i);
2519                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2520                                 return 0;
2521                         }
2522                 }
2523         }
2524
2525         return -EINVAL;
2526 }
2527
2528 static int atmel_config_commit(struct net_device *dev,
2529                                struct iw_request_info *info,    /* NULL */
2530                                void *zwrq,                      /* NULL */
2531                                char *extra)                     /* NULL */
2532 {
2533         return atmel_open(dev);
2534 }
2535
2536 static const iw_handler atmel_handler[] =
2537 {
2538         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2539         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2540         (iw_handler) NULL,                      /* SIOCSIWNWID */
2541         (iw_handler) NULL,                      /* SIOCGIWNWID */
2542         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2543         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2544         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2545         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2546         (iw_handler) NULL,                      /* SIOCSIWSENS */
2547         (iw_handler) NULL,                      /* SIOCGIWSENS */
2548         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2549         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2550         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2551         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2552         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2553         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2554         (iw_handler) NULL,                      /* SIOCSIWSPY */
2555         (iw_handler) NULL,                      /* SIOCGIWSPY */
2556         (iw_handler) NULL,                      /* -- hole -- */
2557         (iw_handler) NULL,                      /* -- hole -- */
2558         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2559         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2560         (iw_handler) NULL,                      /* -- hole -- */
2561         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2562         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2563         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2564         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2565         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2566         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2567         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2568         (iw_handler) NULL,                      /* -- hole -- */
2569         (iw_handler) NULL,                      /* -- hole -- */
2570         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2571         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2572         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2573         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2574         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2575         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2576         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2577         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2578         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2579         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2580         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2581         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2582         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2583         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2584         (iw_handler) NULL,                      /* -- hole -- */
2585         (iw_handler) NULL,                      /* -- hole -- */
2586         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2587         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2588         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2589         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2590         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2591         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2592         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2593 };
2594
2595 static const iw_handler atmel_private_handler[] =
2596 {
2597         NULL,                           /* SIOCIWFIRSTPRIV */
2598 };
2599
2600 struct atmel_priv_ioctl {
2601         char id[32];
2602         unsigned char __user *data;
2603         unsigned short len;
2604 };
2605
2606 #define ATMELFWL        SIOCIWFIRSTPRIV
2607 #define ATMELIDIFC      ATMELFWL + 1
2608 #define ATMELRD         ATMELFWL + 2
2609 #define ATMELMAGIC 0x51807
2610 #define REGDOMAINSZ 20
2611
2612 static const struct iw_priv_args atmel_private_args[] = {
2613         {
2614                 .cmd = ATMELFWL,
2615                 .set_args = IW_PRIV_TYPE_BYTE
2616                                 | IW_PRIV_SIZE_FIXED
2617                                 | sizeof(struct atmel_priv_ioctl),
2618                 .get_args = IW_PRIV_TYPE_NONE,
2619                 .name = "atmelfwl"
2620         }, {
2621                 .cmd = ATMELIDIFC,
2622                 .set_args = IW_PRIV_TYPE_NONE,
2623                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2624                 .name = "atmelidifc"
2625         }, {
2626                 .cmd = ATMELRD,
2627                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2628                 .get_args = IW_PRIV_TYPE_NONE,
2629                 .name = "regdomain"
2630         },
2631 };
2632
2633 static const struct iw_handler_def atmel_handler_def = {
2634         .num_standard   = ARRAY_SIZE(atmel_handler),
2635         .num_private    = ARRAY_SIZE(atmel_private_handler),
2636         .num_private_args = ARRAY_SIZE(atmel_private_args),
2637         .standard       = (iw_handler *) atmel_handler,
2638         .private        = (iw_handler *) atmel_private_handler,
2639         .private_args   = (struct iw_priv_args *) atmel_private_args,
2640         .get_wireless_stats = atmel_get_wireless_stats
2641 };
2642
2643 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2644 {
2645         int i, rc = 0;
2646         struct atmel_private *priv = netdev_priv(dev);
2647         struct atmel_priv_ioctl com;
2648         struct iwreq *wrq = (struct iwreq *) rq;
2649         unsigned char *new_firmware;
2650         char domain[REGDOMAINSZ + 1];
2651
2652         switch (cmd) {
2653         case ATMELIDIFC:
2654                 wrq->u.param.value = ATMELMAGIC;
2655                 break;
2656
2657         case ATMELFWL:
2658                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2659                         rc = -EFAULT;
2660                         break;
2661                 }
2662
2663                 if (!capable(CAP_NET_ADMIN)) {
2664                         rc = -EPERM;
2665                         break;
2666                 }
2667
2668                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2669                         rc = -ENOMEM;
2670                         break;
2671                 }
2672
2673                 if (copy_from_user(new_firmware, com.data, com.len)) {
2674                         kfree(new_firmware);
2675                         rc = -EFAULT;
2676                         break;
2677                 }
2678
2679                 kfree(priv->firmware);
2680
2681                 priv->firmware = new_firmware;
2682                 priv->firmware_length = com.len;
2683                 strncpy(priv->firmware_id, com.id, 31);
2684                 priv->firmware_id[31] = '\0';
2685                 break;
2686
2687         case ATMELRD:
2688                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2689                         rc = -EFAULT;
2690                         break;
2691                 }
2692
2693                 if (!capable(CAP_NET_ADMIN)) {
2694                         rc = -EPERM;
2695                         break;
2696                 }
2697
2698                 domain[REGDOMAINSZ] = 0;
2699                 rc = -EINVAL;
2700                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2701                         if (!strcasecmp(channel_table[i].name, domain)) {
2702                                 priv->config_reg_domain = channel_table[i].reg_domain;
2703                                 rc = 0;
2704                         }
2705                 }
2706
2707                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2708                         rc = atmel_open(dev);
2709                 break;
2710
2711         default:
2712                 rc = -EOPNOTSUPP;
2713         }
2714
2715         return rc;
2716 }
2717
2718 struct auth_body {
2719         __le16 alg;
2720         __le16 trans_seq;
2721         __le16 status;
2722         u8 el_id;
2723         u8 chall_text_len;
2724         u8 chall_text[253];
2725 };
2726
2727 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2728 {
2729         int old_state = priv->station_state;
2730
2731         if (new_state == old_state)
2732                 return;
2733
2734         priv->station_state = new_state;
2735
2736         if (new_state == STATION_STATE_READY) {
2737                 netif_start_queue(priv->dev);
2738                 netif_carrier_on(priv->dev);
2739         }
2740
2741         if (old_state == STATION_STATE_READY) {
2742                 netif_carrier_off(priv->dev);
2743                 if (netif_running(priv->dev))
2744                         netif_stop_queue(priv->dev);
2745                 priv->last_beacon_timestamp = 0;
2746         }
2747 }
2748
2749 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2750 {
2751         struct {
2752                 u8 BSSID[ETH_ALEN];
2753                 u8 SSID[MAX_SSID_LENGTH];
2754                 u8 scan_type;
2755                 u8 channel;
2756                 __le16 BSS_type;
2757                 __le16 min_channel_time;
2758                 __le16 max_channel_time;
2759                 u8 options;
2760                 u8 SSID_size;
2761         } cmd;
2762
2763         eth_broadcast_addr(cmd.BSSID);
2764
2765         if (priv->fast_scan) {
2766                 cmd.SSID_size = priv->SSID_size;
2767                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2768                 cmd.min_channel_time = cpu_to_le16(10);
2769                 cmd.max_channel_time = cpu_to_le16(50);
2770         } else {
2771                 priv->BSS_list_entries = 0;
2772                 cmd.SSID_size = 0;
2773                 cmd.min_channel_time = cpu_to_le16(10);
2774                 cmd.max_channel_time = cpu_to_le16(120);
2775         }
2776
2777         cmd.options = 0;
2778
2779         if (!specific_ssid)
2780                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2781
2782         cmd.channel = (priv->channel & 0x7f);
2783         cmd.scan_type = SCAN_TYPE_ACTIVE;
2784         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2785                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2786
2787         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2788
2789         /* This must come after all hardware access to avoid being messed up
2790            by stuff happening in interrupt context after we leave STATE_DOWN */
2791         atmel_enter_state(priv, STATION_STATE_SCANNING);
2792 }
2793
2794 static void join(struct atmel_private *priv, int type)
2795 {
2796         struct {
2797                 u8 BSSID[6];
2798                 u8 SSID[MAX_SSID_LENGTH];
2799                 u8 BSS_type; /* this is a short in a scan command - weird */
2800                 u8 channel;
2801                 __le16 timeout;
2802                 u8 SSID_size;
2803                 u8 reserved;
2804         } cmd;
2805
2806         cmd.SSID_size = priv->SSID_size;
2807         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2808         memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2809         cmd.channel = (priv->channel & 0x7f);
2810         cmd.BSS_type = type;
2811         cmd.timeout = cpu_to_le16(2000);
2812
2813         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2814 }
2815
2816 static void start(struct atmel_private *priv, int type)
2817 {
2818         struct {
2819                 u8 BSSID[6];
2820                 u8 SSID[MAX_SSID_LENGTH];
2821                 u8 BSS_type;
2822                 u8 channel;
2823                 u8 SSID_size;
2824                 u8 reserved[3];
2825         } cmd;
2826
2827         cmd.SSID_size = priv->SSID_size;
2828         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2829         memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2830         cmd.BSS_type = type;
2831         cmd.channel = (priv->channel & 0x7f);
2832
2833         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2834 }
2835
2836 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2837                                 u8 channel)
2838 {
2839         int rejoin = 0;
2840         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2841                 SHORT_PREAMBLE : LONG_PREAMBLE;
2842
2843         if (priv->preamble != new) {
2844                 priv->preamble = new;
2845                 rejoin = 1;
2846                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2847         }
2848
2849         if (priv->channel != channel) {
2850                 priv->channel = channel;
2851                 rejoin = 1;
2852                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2853         }
2854
2855         if (rejoin) {
2856                 priv->station_is_associated = 0;
2857                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2858
2859                 if (priv->operating_mode == IW_MODE_INFRA)
2860                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2861                 else
2862                         join(priv, BSS_TYPE_AD_HOC);
2863         }
2864 }
2865
2866 static void send_authentication_request(struct atmel_private *priv, u16 system,
2867                                         u8 *challenge, int challenge_len)
2868 {
2869         struct ieee80211_hdr header;
2870         struct auth_body auth;
2871
2872         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2873         header.duration_id = cpu_to_le16(0x8000);
2874         header.seq_ctrl = 0;
2875         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2876         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2877         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2878
2879         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2880                 /* no WEP for authentication frames with TrSeqNo 1 */
2881                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2882
2883         auth.alg = cpu_to_le16(system);
2884
2885         auth.status = 0;
2886         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2887         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2888         priv->CurrentAuthentTransactionSeqNum += 2;
2889
2890         if (challenge_len != 0) {
2891                 auth.el_id = 16; /* challenge_text */
2892                 auth.chall_text_len = challenge_len;
2893                 memcpy(auth.chall_text, challenge, challenge_len);
2894                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2895         } else {
2896                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2897         }
2898 }
2899
2900 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2901 {
2902         u8 *ssid_el_p;
2903         int bodysize;
2904         struct ieee80211_hdr header;
2905         struct ass_req_format {
2906                 __le16 capability;
2907                 __le16 listen_interval;
2908                 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2909                 u8 ssid_el_id;
2910                 u8 ssid_len;
2911                 u8 ssid[MAX_SSID_LENGTH];
2912                 u8 sup_rates_el_id;
2913                 u8 sup_rates_len;
2914                 u8 rates[4];
2915         } body;
2916
2917         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2918                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2919         header.duration_id = cpu_to_le16(0x8000);
2920         header.seq_ctrl = 0;
2921
2922         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2923         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2924         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2925
2926         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2927         if (priv->wep_is_on)
2928                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2929         if (priv->preamble == SHORT_PREAMBLE)
2930                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2931
2932         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2933
2934         /* current AP address - only in reassoc frame */
2935         if (is_reassoc) {
2936                 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2937                 ssid_el_p = &body.ssid_el_id;
2938                 bodysize = 18 + priv->SSID_size;
2939         } else {
2940                 ssid_el_p = &body.ap[0];
2941                 bodysize = 12 + priv->SSID_size;
2942         }
2943
2944         ssid_el_p[0] = WLAN_EID_SSID;
2945         ssid_el_p[1] = priv->SSID_size;
2946         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2947         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2948         ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2949         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2950
2951         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2952 }
2953
2954 static int is_frame_from_current_bss(struct atmel_private *priv,
2955                                      struct ieee80211_hdr *header)
2956 {
2957         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2958                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2959         else
2960                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2961 }
2962
2963 static int retrieve_bss(struct atmel_private *priv)
2964 {
2965         int i;
2966         int max_rssi = -128;
2967         int max_index = -1;
2968
2969         if (priv->BSS_list_entries == 0)
2970                 return -1;
2971
2972         if (priv->connect_to_any_BSS) {
2973                 /* Select a BSS with the max-RSSI but of the same type and of
2974                    the same WEP mode and that it is not marked as 'bad' (i.e.
2975                    we had previously failed to connect to this BSS with the
2976                    settings that we currently use) */
2977                 priv->current_BSS = 0;
2978                 for (i = 0; i < priv->BSS_list_entries; i++) {
2979                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2980                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2981                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2982                             !(priv->BSSinfo[i].channel & 0x80)) {
2983                                 max_rssi = priv->BSSinfo[i].RSSI;
2984                                 priv->current_BSS = max_index = i;
2985                         }
2986                 }
2987                 return max_index;
2988         }
2989
2990         for (i = 0; i < priv->BSS_list_entries; i++) {
2991                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2992                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2993                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2994                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2995                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2996                                 max_rssi = priv->BSSinfo[i].RSSI;
2997                                 max_index = i;
2998                         }
2999                 }
3000         }
3001         return max_index;
3002 }
3003
3004 static void store_bss_info(struct atmel_private *priv,
3005                            struct ieee80211_hdr *header, u16 capability,
3006                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3007                            u8 *ssid, int is_beacon)
3008 {
3009         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3010         int i, index;
3011
3012         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3013                 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
3014                         index = i;
3015
3016         /* If we process a probe and an entry from this BSS exists
3017            we will update the BSS entry with the info from this BSS.
3018            If we process a beacon we will only update RSSI */
3019
3020         if (index == -1) {
3021                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3022                         return;
3023                 index = priv->BSS_list_entries++;
3024                 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
3025                 priv->BSSinfo[index].RSSI = rssi;
3026         } else {
3027                 if (rssi > priv->BSSinfo[index].RSSI)
3028                         priv->BSSinfo[index].RSSI = rssi;
3029                 if (is_beacon)
3030                         return;
3031         }
3032
3033         priv->BSSinfo[index].channel = channel;
3034         priv->BSSinfo[index].beacon_period = beacon_period;
3035         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3036         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3037         priv->BSSinfo[index].SSIDsize = ssid_len;
3038
3039         if (capability & WLAN_CAPABILITY_IBSS)
3040                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3041         else if (capability & WLAN_CAPABILITY_ESS)
3042                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3043
3044         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3045                 SHORT_PREAMBLE : LONG_PREAMBLE;
3046 }
3047
3048 static void authenticate(struct atmel_private *priv, u16 frame_len)
3049 {
3050         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3051         u16 status = le16_to_cpu(auth->status);
3052         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3053         u16 system = le16_to_cpu(auth->alg);
3054
3055         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3056                 /* no WEP */
3057                 if (priv->station_was_associated) {
3058                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3059                         send_association_request(priv, 1);
3060                         return;
3061                 } else {
3062                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3063                         send_association_request(priv, 0);
3064                         return;
3065                 }
3066         }
3067
3068         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3069                 int should_associate = 0;
3070                 /* WEP */
3071                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3072                         return;
3073
3074                 if (system == WLAN_AUTH_OPEN) {
3075                         if (trans_seq_no == 0x0002) {
3076                                 should_associate = 1;
3077                         }
3078                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3079                         if (trans_seq_no == 0x0002 &&
3080                             auth->el_id == WLAN_EID_CHALLENGE) {
3081                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3082                                 return;
3083                         } else if (trans_seq_no == 0x0004) {
3084                                 should_associate = 1;
3085                         }
3086                 }
3087
3088                 if (should_associate) {
3089                         if (priv->station_was_associated) {
3090                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3091                                 send_association_request(priv, 1);
3092                                 return;
3093                         } else {
3094                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3095                                 send_association_request(priv, 0);
3096                                 return;
3097                         }
3098                 }
3099         }
3100
3101         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3102                 /* Flip back and forth between WEP auth modes until the max
3103                  * authentication tries has been exceeded.
3104                  */
3105                 if (system == WLAN_AUTH_OPEN) {
3106                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3107                         priv->exclude_unencrypted = 1;
3108                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3109                         return;
3110                 } else if (system == WLAN_AUTH_SHARED_KEY
3111                            && priv->wep_is_on) {
3112                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3113                         priv->exclude_unencrypted = 0;
3114                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3115                         return;
3116                 } else if (priv->connect_to_any_BSS) {
3117                         int bss_index;
3118
3119                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3120
3121                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3122                                 atmel_join_bss(priv, bss_index);
3123                                 return;
3124                         }
3125                 }
3126         }
3127
3128         priv->AuthenticationRequestRetryCnt = 0;
3129         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3130         priv->station_is_associated = 0;
3131 }
3132
3133 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3134 {
3135         struct ass_resp_format {
3136                 __le16 capability;
3137                 __le16 status;
3138                 __le16 ass_id;
3139                 u8 el_id;
3140                 u8 length;
3141                 u8 rates[4];
3142         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3143
3144         u16 status = le16_to_cpu(ass_resp->status);
3145         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3146         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3147
3148         union iwreq_data wrqu;
3149
3150         if (frame_len < 8 + rates_len)
3151                 return;
3152
3153         if (status == WLAN_STATUS_SUCCESS) {
3154                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3155                         priv->AssociationRequestRetryCnt = 0;
3156                 else
3157                         priv->ReAssociationRequestRetryCnt = 0;
3158
3159                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3160                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3161                 atmel_set_mib(priv, Phy_Mib_Type,
3162                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3163                 if (priv->power_mode == 0) {
3164                         priv->listen_interval = 1;
3165                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3166                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3167                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3168                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3169                 } else {
3170                         priv->listen_interval = 2;
3171                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3172                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3173                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3174                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3175                 }
3176
3177                 priv->station_is_associated = 1;
3178                 priv->station_was_associated = 1;
3179                 atmel_enter_state(priv, STATION_STATE_READY);
3180
3181                 /* Send association event to userspace */
3182                 wrqu.data.length = 0;
3183                 wrqu.data.flags = 0;
3184                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3185                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3186                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3187
3188                 return;
3189         }
3190
3191         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3192             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3193             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3194             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3195                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3196                 priv->AssociationRequestRetryCnt++;
3197                 send_association_request(priv, 0);
3198                 return;
3199         }
3200
3201         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3202             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3203             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3204             priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3205                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3206                 priv->ReAssociationRequestRetryCnt++;
3207                 send_association_request(priv, 1);
3208                 return;
3209         }
3210
3211         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3212         priv->station_is_associated = 0;
3213
3214         if (priv->connect_to_any_BSS) {
3215                 int bss_index;
3216                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3217
3218                 if ((bss_index = retrieve_bss(priv)) != -1)
3219                         atmel_join_bss(priv, bss_index);
3220         }
3221 }
3222
3223 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3224 {
3225         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3226
3227         memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3228         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3229
3230         /* The WPA stuff cares about the current AP address */
3231         if (priv->use_wpa)
3232                 build_wpa_mib(priv);
3233
3234         /* When switching to AdHoc turn OFF Power Save if needed */
3235
3236         if (bss->BSStype == IW_MODE_ADHOC &&
3237             priv->operating_mode != IW_MODE_ADHOC &&
3238             priv->power_mode) {
3239                 priv->power_mode = 0;
3240                 priv->listen_interval = 1;
3241                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3242                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3243                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3244                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3245         }
3246
3247         priv->operating_mode = bss->BSStype;
3248         priv->channel = bss->channel & 0x7f;
3249         priv->beacon_period = bss->beacon_period;
3250
3251         if (priv->preamble != bss->preamble) {
3252                 priv->preamble = bss->preamble;
3253                 atmel_set_mib8(priv, Local_Mib_Type,
3254                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3255         }
3256
3257         if (!priv->wep_is_on && bss->UsingWEP) {
3258                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3259                 priv->station_is_associated = 0;
3260                 return;
3261         }
3262
3263         if (priv->wep_is_on && !bss->UsingWEP) {
3264                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3265                 priv->station_is_associated = 0;
3266                 return;
3267         }
3268
3269         atmel_enter_state(priv, STATION_STATE_JOINNING);
3270
3271         if (priv->operating_mode == IW_MODE_INFRA)
3272                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3273         else
3274                 join(priv, BSS_TYPE_AD_HOC);
3275 }
3276
3277 static void restart_search(struct atmel_private *priv)
3278 {
3279         int bss_index;
3280
3281         if (!priv->connect_to_any_BSS) {
3282                 atmel_scan(priv, 1);
3283         } else {
3284                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3285
3286                 if ((bss_index = retrieve_bss(priv)) != -1)
3287                         atmel_join_bss(priv, bss_index);
3288                 else
3289                         atmel_scan(priv, 0);
3290         }
3291 }
3292
3293 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3294 {
3295         u8 old = priv->wstats.qual.level;
3296         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3297
3298         switch (priv->firmware_type) {
3299         case ATMEL_FW_TYPE_502E:
3300                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3301                 break;
3302         default:
3303                 break;
3304         }
3305
3306         rssi = rssi * 100 / max_rssi;
3307         if ((rssi + old) % 2)
3308                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3309         else
3310                 priv->wstats.qual.level = (rssi + old) / 2;
3311         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3312         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3313 }
3314
3315 static void atmel_smooth_qual(struct atmel_private *priv)
3316 {
3317         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3318         while (time_diff--) {
3319                 priv->last_qual += HZ;
3320                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3321                 priv->wstats.qual.qual +=
3322                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3323                 priv->beacons_this_sec = 0;
3324         }
3325         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3326         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3327 }
3328
3329 /* deals with incoming management frames. */
3330 static void atmel_management_frame(struct atmel_private *priv,
3331                                    struct ieee80211_hdr *header,
3332                                    u16 frame_len, u8 rssi)
3333 {
3334         u16 subtype;
3335
3336         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3337         switch (subtype) {
3338         case IEEE80211_STYPE_BEACON:
3339         case IEEE80211_STYPE_PROBE_RESP:
3340
3341                 /* beacon frame has multiple variable-length fields -
3342                    never let an engineer loose with a data structure design. */
3343                 {
3344                         struct beacon_format {
3345                                 __le64 timestamp;
3346                                 __le16 interval;
3347                                 __le16 capability;
3348                                 u8 ssid_el_id;
3349                                 u8 ssid_length;
3350                                 /* ssid here */
3351                                 u8 rates_el_id;
3352                                 u8 rates_length;
3353                                 /* rates here */
3354                                 u8 ds_el_id;
3355                                 u8 ds_length;
3356                                 /* ds here */
3357                         } *beacon = (struct beacon_format *)priv->rx_buf;
3358
3359                         u8 channel, rates_length, ssid_length;
3360                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3361                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3362                         u16 capability = le16_to_cpu(beacon->capability);
3363                         u8 *beaconp = priv->rx_buf;
3364                         ssid_length = beacon->ssid_length;
3365                         /* this blows chunks. */
3366                         if (frame_len < 14 || frame_len < ssid_length + 15)
3367                                 return;
3368                         rates_length = beaconp[beacon->ssid_length + 15];
3369                         if (frame_len < ssid_length + rates_length + 18)
3370                                 return;
3371                         if (ssid_length >  MAX_SSID_LENGTH)
3372                                 return;
3373                         channel = beaconp[ssid_length + rates_length + 18];
3374
3375                         if (priv->station_state == STATION_STATE_READY) {
3376                                 smooth_rssi(priv, rssi);
3377                                 if (is_frame_from_current_bss(priv, header)) {
3378                                         priv->beacons_this_sec++;
3379                                         atmel_smooth_qual(priv);
3380                                         if (priv->last_beacon_timestamp) {
3381                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3382                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3383                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3384                                                 if (beacons > 1)
3385                                                         priv->wstats.miss.beacon += beacons - 1;
3386                                         }
3387                                         priv->last_beacon_timestamp = timestamp;
3388                                         handle_beacon_probe(priv, capability, channel);
3389                                 }
3390                         }
3391
3392                         if (priv->station_state == STATION_STATE_SCANNING)
3393                                 store_bss_info(priv, header, capability,
3394                                                beacon_interval, channel, rssi,
3395                                                ssid_length,
3396                                                &beacon->rates_el_id,
3397                                                subtype == IEEE80211_STYPE_BEACON);
3398                 }
3399                 break;
3400
3401         case IEEE80211_STYPE_AUTH:
3402
3403                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3404                         authenticate(priv, frame_len);
3405
3406                 break;
3407
3408         case IEEE80211_STYPE_ASSOC_RESP:
3409         case IEEE80211_STYPE_REASSOC_RESP:
3410
3411                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3412                     priv->station_state == STATION_STATE_REASSOCIATING)
3413                         associate(priv, frame_len, subtype);
3414
3415                 break;
3416
3417         case IEEE80211_STYPE_DISASSOC:
3418                 if (priv->station_is_associated &&
3419                     priv->operating_mode == IW_MODE_INFRA &&
3420                     is_frame_from_current_bss(priv, header)) {
3421                         priv->station_was_associated = 0;
3422                         priv->station_is_associated = 0;
3423
3424                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3425                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3426                 }
3427
3428                 break;
3429
3430         case IEEE80211_STYPE_DEAUTH:
3431                 if (priv->operating_mode == IW_MODE_INFRA &&
3432                     is_frame_from_current_bss(priv, header)) {
3433                         priv->station_was_associated = 0;
3434
3435                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3436                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3437                 }
3438
3439                 break;
3440         }
3441 }
3442
3443 /* run when timer expires */
3444 static void atmel_management_timer(u_long a)
3445 {
3446         struct net_device *dev = (struct net_device *) a;
3447         struct atmel_private *priv = netdev_priv(dev);
3448         unsigned long flags;
3449
3450         /* Check if the card has been yanked. */
3451         if (priv->card && priv->present_callback &&
3452                 !(*priv->present_callback)(priv->card))
3453                 return;
3454
3455         spin_lock_irqsave(&priv->irqlock, flags);
3456
3457         switch (priv->station_state) {
3458
3459         case STATION_STATE_AUTHENTICATING:
3460                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3461                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3462                         priv->station_is_associated = 0;
3463                         priv->AuthenticationRequestRetryCnt = 0;
3464                         restart_search(priv);
3465                 } else {
3466                         int auth = WLAN_AUTH_OPEN;
3467                         priv->AuthenticationRequestRetryCnt++;
3468                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3469                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3470                         if (priv->wep_is_on && priv->exclude_unencrypted)
3471                                 auth = WLAN_AUTH_SHARED_KEY;
3472                         send_authentication_request(priv, auth, NULL, 0);
3473           }
3474           break;
3475
3476         case STATION_STATE_ASSOCIATING:
3477                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3478                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3479                         priv->station_is_associated = 0;
3480                         priv->AssociationRequestRetryCnt = 0;
3481                         restart_search(priv);
3482                 } else {
3483                         priv->AssociationRequestRetryCnt++;
3484                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3485                         send_association_request(priv, 0);
3486                 }
3487           break;
3488
3489         case STATION_STATE_REASSOCIATING:
3490                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3491                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3492                         priv->station_is_associated = 0;
3493                         priv->ReAssociationRequestRetryCnt = 0;
3494                         restart_search(priv);
3495                 } else {
3496                         priv->ReAssociationRequestRetryCnt++;
3497                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3498                         send_association_request(priv, 1);
3499                 }
3500                 break;
3501
3502         default:
3503                 break;
3504         }
3505
3506         spin_unlock_irqrestore(&priv->irqlock, flags);
3507 }
3508
3509 static void atmel_command_irq(struct atmel_private *priv)
3510 {
3511         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3512         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3513         int fast_scan;
3514         union iwreq_data wrqu;
3515
3516         if (status == CMD_STATUS_IDLE ||
3517             status == CMD_STATUS_IN_PROGRESS)
3518                 return;
3519
3520         switch (command) {
3521         case CMD_Start:
3522                 if (status == CMD_STATUS_COMPLETE) {
3523                         priv->station_was_associated = priv->station_is_associated;
3524                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3525                                       (u8 *)priv->CurrentBSSID, 6);
3526                         atmel_enter_state(priv, STATION_STATE_READY);
3527                 }
3528                 break;
3529
3530         case CMD_Scan:
3531                 fast_scan = priv->fast_scan;
3532                 priv->fast_scan = 0;
3533
3534                 if (status != CMD_STATUS_COMPLETE) {
3535                         atmel_scan(priv, 1);
3536                 } else {
3537                         int bss_index = retrieve_bss(priv);
3538                         int notify_scan_complete = 1;
3539                         if (bss_index != -1) {
3540                                 atmel_join_bss(priv, bss_index);
3541                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3542                                    priv->SSID_size != 0) {
3543                                 start(priv, BSS_TYPE_AD_HOC);
3544                         } else {
3545                                 priv->fast_scan = !fast_scan;
3546                                 atmel_scan(priv, 1);
3547                                 notify_scan_complete = 0;
3548                         }
3549                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3550                         if (notify_scan_complete) {
3551                                 wrqu.data.length = 0;
3552                                 wrqu.data.flags = 0;
3553                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3554                         }
3555                 }
3556                 break;
3557
3558         case CMD_SiteSurvey:
3559                 priv->fast_scan = 0;
3560
3561                 if (status != CMD_STATUS_COMPLETE)
3562                         return;
3563
3564                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3565                 if (priv->station_is_associated) {
3566                         atmel_enter_state(priv, STATION_STATE_READY);
3567                         wrqu.data.length = 0;
3568                         wrqu.data.flags = 0;
3569                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3570                 } else {
3571                         atmel_scan(priv, 1);
3572                 }
3573                 break;
3574
3575         case CMD_Join:
3576                 if (status == CMD_STATUS_COMPLETE) {
3577                         if (priv->operating_mode == IW_MODE_ADHOC) {
3578                                 priv->station_was_associated = priv->station_is_associated;
3579                                 atmel_enter_state(priv, STATION_STATE_READY);
3580                         } else {
3581                                 int auth = WLAN_AUTH_OPEN;
3582                                 priv->AuthenticationRequestRetryCnt = 0;
3583                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3584
3585                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3586                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3587                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3588                                         auth = WLAN_AUTH_SHARED_KEY;
3589                                 send_authentication_request(priv, auth, NULL, 0);
3590                         }
3591                         return;
3592                 }
3593
3594                 atmel_scan(priv, 1);
3595         }
3596 }
3597
3598 static int atmel_wakeup_firmware(struct atmel_private *priv)
3599 {
3600         struct host_info_struct *iface = &priv->host_info;
3601         u16 mr1, mr3;
3602         int i;
3603
3604         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3605                 atmel_set_gcr(priv->dev, GCR_REMAP);
3606
3607         /* wake up on-board processor */
3608         atmel_clear_gcr(priv->dev, 0x0040);
3609         atmel_write16(priv->dev, BSR, BSS_SRAM);
3610
3611         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3612                 mdelay(100);
3613
3614         /* and wait for it */
3615         for (i = LOOP_RETRY_LIMIT; i; i--) {
3616                 mr1 = atmel_read16(priv->dev, MR1);
3617                 mr3 = atmel_read16(priv->dev, MR3);
3618
3619                 if (mr3 & MAC_BOOT_COMPLETE)
3620                         break;
3621                 if (mr1 & MAC_BOOT_COMPLETE &&
3622                     priv->bus_type == BUS_TYPE_PCCARD)
3623                         break;
3624         }
3625
3626         if (i == 0) {
3627                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3628                 return -EIO;
3629         }
3630
3631         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3632                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3633                 return -ENODEV;
3634         }
3635
3636         /* now check for completion of MAC initialization through
3637            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3638            MAC initialization, check completion status, set interrupt mask,
3639            enables interrupts and calls Tx and Rx initialization functions */
3640
3641         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3642
3643         for (i = LOOP_RETRY_LIMIT; i; i--) {
3644                 mr1 = atmel_read16(priv->dev, MR1);
3645                 mr3 = atmel_read16(priv->dev, MR3);
3646
3647                 if (mr3 & MAC_INIT_COMPLETE)
3648                         break;
3649                 if (mr1 & MAC_INIT_COMPLETE &&
3650                     priv->bus_type == BUS_TYPE_PCCARD)
3651                         break;
3652         }
3653
3654         if (i == 0) {
3655                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3656                                 priv->dev->name);
3657                 return -EIO;
3658         }
3659
3660         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3661         if ((mr3 & MAC_INIT_COMPLETE) &&
3662             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3663                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3664                 return -EIO;
3665         }
3666         if ((mr1 & MAC_INIT_COMPLETE) &&
3667             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3668                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3669                 return -EIO;
3670         }
3671
3672         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3673                            priv->host_info_base, sizeof(*iface));
3674
3675         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3676         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3677         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3678         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3679         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3680         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3681         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3682         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3683         iface->build_version = le16_to_cpu(iface->build_version);
3684         iface->command_pos = le16_to_cpu(iface->command_pos);
3685         iface->major_version = le16_to_cpu(iface->major_version);
3686         iface->minor_version = le16_to_cpu(iface->minor_version);
3687         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3688         iface->mac_status = le16_to_cpu(iface->mac_status);
3689
3690         return 0;
3691 }
3692
3693 /* determine type of memory and MAC address */
3694 static int probe_atmel_card(struct net_device *dev)
3695 {
3696         int rc = 0;
3697         struct atmel_private *priv = netdev_priv(dev);
3698
3699         /* reset pccard */
3700         if (priv->bus_type == BUS_TYPE_PCCARD)
3701                 atmel_write16(dev, GCR, 0x0060);
3702
3703         atmel_write16(dev, GCR, 0x0040);
3704         mdelay(500);
3705
3706         if (atmel_read16(dev, MR2) == 0) {
3707                 /* No stored firmware so load a small stub which just
3708                    tells us the MAC address */
3709                 int i;
3710                 priv->card_type = CARD_TYPE_EEPROM;
3711                 atmel_write16(dev, BSR, BSS_IRAM);
3712                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3713                 atmel_set_gcr(dev, GCR_REMAP);
3714                 atmel_clear_gcr(priv->dev, 0x0040);
3715                 atmel_write16(dev, BSR, BSS_SRAM);
3716                 for (i = LOOP_RETRY_LIMIT; i; i--)
3717                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3718                                 break;
3719                 if (i == 0) {
3720                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3721                 } else {
3722                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3723                         /* got address, now squash it again until the network
3724                            interface is opened */
3725                         if (priv->bus_type == BUS_TYPE_PCCARD)
3726                                 atmel_write16(dev, GCR, 0x0060);
3727                         atmel_write16(dev, GCR, 0x0040);
3728                         rc = 1;
3729                 }
3730         } else if (atmel_read16(dev, MR4) == 0) {
3731                 /* Mac address easy in this case. */
3732                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3733                 atmel_write16(dev,  BSR, 1);
3734                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3735                 atmel_write16(dev,  BSR, 0x200);
3736                 rc = 1;
3737         } else {
3738                 /* Standard firmware in flash, boot it up and ask
3739                    for the Mac Address */
3740                 priv->card_type = CARD_TYPE_SPI_FLASH;
3741                 if (atmel_wakeup_firmware(priv) == 0) {
3742                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3743
3744                         /* got address, now squash it again until the network
3745                            interface is opened */
3746                         if (priv->bus_type == BUS_TYPE_PCCARD)
3747                                 atmel_write16(dev, GCR, 0x0060);
3748                         atmel_write16(dev, GCR, 0x0040);
3749                         rc = 1;
3750                 }
3751         }
3752
3753         if (rc) {
3754                 if (dev->dev_addr[0] == 0xFF) {
3755                         static const u8 default_mac[] = {
3756                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3757                         };
3758                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3759                         memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3760                 }
3761         }
3762
3763         return rc;
3764 }
3765
3766 /* Move the encyption information on the MIB structure.
3767    This routine is for the pre-WPA firmware: later firmware has
3768    a different format MIB and a different routine. */
3769 static void build_wep_mib(struct atmel_private *priv)
3770 {
3771         struct { /* NB this is matched to the hardware, don't change. */
3772                 u8 wep_is_on;
3773                 u8 default_key; /* 0..3 */
3774                 u8 reserved;
3775                 u8 exclude_unencrypted;
3776
3777                 u32 WEPICV_error_count;
3778                 u32 WEP_excluded_count;
3779
3780                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3781                 u8 encryption_level; /* 0, 1, 2 */
3782                 u8 reserved2[3];
3783         } mib;
3784         int i;
3785
3786         mib.wep_is_on = priv->wep_is_on;
3787         if (priv->wep_is_on) {
3788                 if (priv->wep_key_len[priv->default_key] > 5)
3789                         mib.encryption_level = 2;
3790                 else
3791                         mib.encryption_level = 1;
3792         } else {
3793                 mib.encryption_level = 0;
3794         }
3795
3796         mib.default_key = priv->default_key;
3797         mib.exclude_unencrypted = priv->exclude_unencrypted;
3798
3799         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3800                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3801
3802         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3803 }
3804
3805 static void build_wpa_mib(struct atmel_private *priv)
3806 {
3807         /* This is for the later (WPA enabled) firmware. */
3808
3809         struct { /* NB this is matched to the hardware, don't change. */
3810                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3811                 u8 receiver_address[ETH_ALEN];
3812                 u8 wep_is_on;
3813                 u8 default_key; /* 0..3 */
3814                 u8 group_key;
3815                 u8 exclude_unencrypted;
3816                 u8 encryption_type;
3817                 u8 reserved;
3818
3819                 u32 WEPICV_error_count;
3820                 u32 WEP_excluded_count;
3821
3822                 u8 key_RSC[4][8];
3823         } mib;
3824
3825         int i;
3826
3827         mib.wep_is_on = priv->wep_is_on;
3828         mib.exclude_unencrypted = priv->exclude_unencrypted;
3829         memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3830
3831         /* zero all the keys before adding in valid ones. */
3832         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3833
3834         if (priv->wep_is_on) {
3835                 /* There's a comment in the Atmel code to the effect that this
3836                    is only valid when still using WEP, it may need to be set to
3837                    something to use WPA */
3838                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3839
3840                 mib.default_key = mib.group_key = 255;
3841                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3842                         if (priv->wep_key_len[i] > 0) {
3843                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3844                                 if (i == priv->default_key) {
3845                                         mib.default_key = i;
3846                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3847                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3848                                 } else {
3849                                         mib.group_key = i;
3850                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3851                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3852                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3853                                 }
3854                         }
3855                 }
3856                 if (mib.default_key == 255)
3857                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3858                 if (mib.group_key == 255)
3859                         mib.group_key = mib.default_key;
3860
3861         }
3862
3863         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3864 }
3865
3866 static int reset_atmel_card(struct net_device *dev)
3867 {
3868         /* do everything necessary to wake up the hardware, including
3869            waiting for the lightning strike and throwing the knife switch....
3870
3871            set all the Mib values which matter in the card to match
3872            their settings in the atmel_private structure. Some of these
3873            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3874            can only be changed by tearing down the world and coming back through
3875            here.
3876
3877            This routine is also responsible for initialising some
3878            hardware-specific fields in the atmel_private structure,
3879            including a copy of the firmware's hostinfo structure
3880            which is the route into the rest of the firmware datastructures. */
3881
3882         struct atmel_private *priv = netdev_priv(dev);
3883         u8 configuration;
3884         int old_state = priv->station_state;
3885         int err = 0;
3886
3887         /* data to add to the firmware names, in priority order
3888            this implemenents firmware versioning */
3889
3890         static char *firmware_modifier[] = {
3891                 "-wpa",
3892                 "",
3893                 NULL
3894         };
3895
3896         /* reset pccard */
3897         if (priv->bus_type == BUS_TYPE_PCCARD)
3898                 atmel_write16(priv->dev, GCR, 0x0060);
3899
3900         /* stop card , disable interrupts */
3901         atmel_write16(priv->dev, GCR, 0x0040);
3902
3903         if (priv->card_type == CARD_TYPE_EEPROM) {
3904                 /* copy in firmware if needed */
3905                 const struct firmware *fw_entry = NULL;
3906                 const unsigned char *fw;
3907                 int len = priv->firmware_length;
3908                 if (!(fw = priv->firmware)) {
3909                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3910                                 if (strlen(priv->firmware_id) == 0) {
3911                                         printk(KERN_INFO
3912                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3913                                                dev->name);
3914                                         printk(KERN_INFO
3915                                                "%s: if not, use the firmware= module parameter.\n",
3916                                                dev->name);
3917                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3918                                 }
3919                                 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3920                                 if (err != 0) {
3921                                         printk(KERN_ALERT
3922                                                "%s: firmware %s is missing, cannot continue.\n",
3923                                                dev->name, priv->firmware_id);
3924                                         return err;
3925                                 }
3926                         } else {
3927                                 int fw_index = 0;
3928                                 int success = 0;
3929
3930                                 /* get firmware filename entry based on firmware type ID */
3931                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3932                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3933                                         fw_index++;
3934
3935                                 /* construct the actual firmware file name */
3936                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3937                                         int i;
3938                                         for (i = 0; firmware_modifier[i]; i++) {
3939                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3940                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3941                                                 priv->firmware_id[31] = '\0';
3942                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3943                                                         success = 1;
3944                                                         break;
3945                                                 }
3946                                         }
3947                                 }
3948                                 if (!success) {
3949                                         printk(KERN_ALERT
3950                                                "%s: firmware %s is missing, cannot start.\n",
3951                                                dev->name, priv->firmware_id);
3952                                         priv->firmware_id[0] = '\0';
3953                                         return -ENOENT;
3954                                 }
3955                         }
3956
3957                         fw = fw_entry->data;
3958                         len = fw_entry->size;
3959                 }
3960
3961                 if (len <= 0x6000) {
3962                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3963                         atmel_copy_to_card(priv->dev, 0, fw, len);
3964                         atmel_set_gcr(priv->dev, GCR_REMAP);
3965                 } else {
3966                         /* Remap */
3967                         atmel_set_gcr(priv->dev, GCR_REMAP);
3968                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3969                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3970                         atmel_write16(priv->dev, BSR, 0x2ff);
3971                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3972                 }
3973
3974                 release_firmware(fw_entry);
3975         }
3976
3977         err = atmel_wakeup_firmware(priv);
3978         if (err != 0)
3979                 return err;
3980
3981         /* Check the version and set the correct flag for wpa stuff,
3982            old and new firmware is incompatible.
3983            The pre-wpa 3com firmware reports major version 5,
3984            the wpa 3com firmware is major version 4 and doesn't need
3985            the 3com broken-ness filter. */
3986         priv->use_wpa = (priv->host_info.major_version == 4);
3987         priv->radio_on_broken = (priv->host_info.major_version == 5);
3988
3989         /* unmask all irq sources */
3990         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3991
3992         /* int Tx system and enable Tx */
3993         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3994         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3995         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3996         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3997
3998         priv->tx_desc_free = priv->host_info.tx_desc_count;
3999         priv->tx_desc_head = 0;
4000         priv->tx_desc_tail = 0;
4001         priv->tx_desc_previous = 0;
4002         priv->tx_free_mem = priv->host_info.tx_buff_size;
4003         priv->tx_buff_head = 0;
4004         priv->tx_buff_tail = 0;
4005
4006         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4007         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4008                                    configuration | FUNC_CTRL_TxENABLE);
4009
4010         /* init Rx system and enable */
4011         priv->rx_desc_head = 0;
4012
4013         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4014         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4015                                    configuration | FUNC_CTRL_RxENABLE);
4016
4017         if (!priv->radio_on_broken) {
4018                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4019                     CMD_STATUS_REJECTED_RADIO_OFF) {
4020                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
4021                                dev->name);
4022                         return -EIO;
4023                 }
4024         }
4025
4026         /* set up enough MIB values to run. */
4027         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4028         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4029         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4030         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4031         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4032         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4033         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4034         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4035                       priv->dev->dev_addr, 6);
4036         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4037         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4038         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4039         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4040         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4041         if (priv->use_wpa)
4042                 build_wpa_mib(priv);
4043         else
4044                 build_wep_mib(priv);
4045
4046         if (old_state == STATION_STATE_READY) {
4047                 union iwreq_data wrqu;
4048
4049                 wrqu.data.length = 0;
4050                 wrqu.data.flags = 0;
4051                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4052                 eth_zero_addr(wrqu.ap_addr.sa_data);
4053                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4054         }
4055
4056         return 0;
4057 }
4058
4059 static void atmel_send_command(struct atmel_private *priv, int command,
4060                                void *cmd, int cmd_size)
4061 {
4062         if (cmd)
4063                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4064                                    cmd, cmd_size);
4065
4066         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4067         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4068 }
4069
4070 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4071                                    void *cmd, int cmd_size)
4072 {
4073         int i, status;
4074
4075         atmel_send_command(priv, command, cmd, cmd_size);
4076
4077         for (i = 5000; i; i--) {
4078                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4079                 if (status != CMD_STATUS_IDLE &&
4080                     status != CMD_STATUS_IN_PROGRESS)
4081                         break;
4082                 udelay(20);
4083         }
4084
4085         if (i == 0) {
4086                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4087                 status =  CMD_STATUS_HOST_ERROR;
4088         } else {
4089                 if (command != CMD_EnableRadio)
4090                         status = CMD_STATUS_COMPLETE;
4091         }
4092
4093         return status;
4094 }
4095
4096 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4097 {
4098         struct get_set_mib m;
4099         m.type = type;
4100         m.size = 1;
4101         m.index = index;
4102
4103         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4104         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4105 }
4106
4107 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4108 {
4109         struct get_set_mib m;
4110         m.type = type;
4111         m.size = 1;
4112         m.index = index;
4113         m.data[0] = data;
4114
4115         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4116 }
4117
4118 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4119                             u16 data)
4120 {
4121         struct get_set_mib m;
4122         m.type = type;
4123         m.size = 2;
4124         m.index = index;
4125         m.data[0] = data;
4126         m.data[1] = data >> 8;
4127
4128         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4129 }
4130
4131 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4132                           u8 *data, int data_len)
4133 {
4134         struct get_set_mib m;
4135         m.type = type;
4136         m.size = data_len;
4137         m.index = index;
4138
4139         if (data_len > MIB_MAX_DATA_BYTES)
4140                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4141
4142         memcpy(m.data, data, data_len);
4143         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4144 }
4145
4146 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4147                           u8 *data, int data_len)
4148 {
4149         struct get_set_mib m;
4150         m.type = type;
4151         m.size = data_len;
4152         m.index = index;
4153
4154         if (data_len > MIB_MAX_DATA_BYTES)
4155                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4156
4157         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4158         atmel_copy_to_host(priv->dev, data,
4159                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4160 }
4161
4162 static void atmel_writeAR(struct net_device *dev, u16 data)
4163 {
4164         int i;
4165         outw(data, dev->base_addr + AR);
4166         /* Address register appears to need some convincing..... */
4167         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4168                 outw(data, dev->base_addr + AR);
4169 }
4170
4171 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4172                                const unsigned char *src, u16 len)
4173 {
4174         int i;
4175         atmel_writeAR(dev, dest);
4176         if (dest % 2) {
4177                 atmel_write8(dev, DR, *src);
4178                 src++; len--;
4179         }
4180         for (i = len; i > 1 ; i -= 2) {
4181                 u8 lb = *src++;
4182                 u8 hb = *src++;
4183                 atmel_write16(dev, DR, lb | (hb << 8));
4184         }
4185         if (i)
4186                 atmel_write8(dev, DR, *src);
4187 }
4188
4189 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4190                                u16 src, u16 len)
4191 {
4192         int i;
4193         atmel_writeAR(dev, src);
4194         if (src % 2) {
4195                 *dest = atmel_read8(dev, DR);
4196                 dest++; len--;
4197         }
4198         for (i = len; i > 1 ; i -= 2) {
4199                 u16 hw = atmel_read16(dev, DR);
4200                 *dest++ = hw;
4201                 *dest++ = hw >> 8;
4202         }
4203         if (i)
4204                 *dest = atmel_read8(dev, DR);
4205 }
4206
4207 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4208 {
4209         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4210 }
4211
4212 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4213 {
4214         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4215 }
4216
4217 static int atmel_lock_mac(struct atmel_private *priv)
4218 {
4219         int i, j = 20;
4220  retry:
4221         for (i = 5000; i; i--) {
4222                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4223                         break;
4224                 udelay(20);
4225         }
4226
4227         if (!i)
4228                 return 0; /* timed out */
4229
4230         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4231         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4232                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4233                 if (!j--)
4234                         return 0; /* timed out */
4235                 goto retry;
4236         }
4237
4238         return 1;
4239 }
4240
4241 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4242 {
4243         atmel_writeAR(priv->dev, pos);
4244         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4245         atmel_write16(priv->dev, DR, data >> 16);
4246 }
4247
4248 /***************************************************************************/
4249 /* There follows the source form of the MAC address reading firmware       */
4250 /***************************************************************************/
4251 #if 0
4252
4253 /* Copyright 2003 Matthew T. Russotto                                      */
4254 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4255 /* included in "atmel wireless lan drivers" package                        */
4256 /**
4257     This file is part of net.russotto.AtmelMACFW, hereto referred to
4258     as AtmelMACFW
4259
4260     AtmelMACFW is free software; you can redistribute it and/or modify
4261     it under the terms of the GNU General Public License version 2
4262     as published by the Free Software Foundation.
4263
4264     AtmelMACFW is distributed in the hope that it will be useful,
4265     but WITHOUT ANY WARRANTY; without even the implied warranty of
4266     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4267     GNU General Public License for more details.
4268
4269     You should have received a copy of the GNU General Public License
4270     along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4271
4272 ****************************************************************************/
4273 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4274 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4275 /* It only works on SPI EEPROM versions of the card.                       */
4276
4277 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4278 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4279 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4280 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4281 /* MR4, for investigational purposes (maybe we can determine chip type     */
4282 /* from that?)                                                             */
4283
4284         .org 0
4285     .set MRBASE, 0x8000000
4286         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4287         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4288         .set SRAM_BASE,  0x02000000
4289         .set SP_BASE,    0x0F300000
4290         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4291         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4292         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4293         .set STACK_BASE, 0x5600
4294         .set SP_SR, 0x10
4295         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4296         .set SP_RDRF, 1 /* status register bit -- RDR full */
4297         .set SP_SWRST, 0x80
4298         .set SP_SPIEN, 0x1
4299         .set SP_CR, 0   /* control register */
4300         .set SP_MR, 4   /* mode register */
4301         .set SP_RDR, 0x08 /* Read Data Register */
4302         .set SP_TDR, 0x0C /* Transmit Data Register */
4303         .set SP_CSR0, 0x30 /* chip select registers */
4304         .set SP_CSR1, 0x34
4305         .set SP_CSR2, 0x38
4306         .set SP_CSR3, 0x3C
4307         .set NVRAM_CMD_RDSR, 5 /* read status register */
4308         .set NVRAM_CMD_READ, 3 /* read data */
4309         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4310         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4311                                   serial output, since SO is normally high.  But it
4312                                   does cause 8 clock cycles and thus 8 bits to be
4313                                   clocked in to the chip.  See Atmel's SPI
4314                                   controller (e.g. AT91M55800) timing and 4K
4315                                   SPI EEPROM manuals */
4316
4317         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4318         .set NVRAM_IMAGE, 0x02000200
4319         .set NVRAM_LENGTH, 0x0200
4320         .set MAC_ADDRESS_MIB, SRAM_BASE
4321         .set MAC_ADDRESS_LENGTH, 6
4322         .set MAC_BOOT_FLAG, 0x10
4323         .set MR1, 0
4324         .set MR2, 4
4325         .set MR3, 8
4326         .set MR4, 0xC
4327 RESET_VECTOR:
4328         b RESET_HANDLER
4329 UNDEF_VECTOR:
4330         b HALT1
4331 SWI_VECTOR:
4332         b HALT1
4333 IABORT_VECTOR:
4334         b HALT1
4335 DABORT_VECTOR:
4336 RESERVED_VECTOR:
4337         b HALT1
4338 IRQ_VECTOR:
4339         b HALT1
4340 FIQ_VECTOR:
4341         b HALT1
4342 HALT1:  b HALT1
4343 RESET_HANDLER:
4344         mov     r0, #CPSR_INITIAL
4345         msr     CPSR_c, r0      /* This is probably unnecessary */
4346
4347 /* I'm guessing this is initializing clock generator electronics for SPI */
4348         ldr     r0, =SPI_CGEN_BASE
4349         mov     r1, #0
4350         mov     r1, r1, lsl #3
4351         orr     r1, r1, #0
4352         str     r1, [r0]
4353         ldr     r1, [r0, #28]
4354         bic     r1, r1, #16
4355         str     r1, [r0, #28]
4356         mov     r1, #1
4357         str     r1, [r0, #8]
4358
4359         ldr     r0, =MRBASE
4360         mov     r1, #0
4361         strh    r1, [r0, #MR1]
4362         strh    r1, [r0, #MR2]
4363         strh    r1, [r0, #MR3]
4364         strh    r1, [r0, #MR4]
4365
4366         mov     sp, #STACK_BASE
4367         bl      SP_INIT
4368         mov     r0, #10
4369         bl      DELAY9
4370         bl      GET_MAC_ADDR
4371         bl      GET_WHOLE_NVRAM
4372         ldr     r0, =MRBASE
4373         ldr     r1, =MAC_ADDRESS_MIB
4374         strh    r1, [r0, #MR2]
4375         ldr     r1, =NVRAM_IMAGE
4376         strh    r1, [r0, #MR4]
4377         mov     r1, #MAC_BOOT_FLAG
4378         strh    r1, [r0, #MR3]
4379 HALT2:  b HALT2
4380 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4381 GET_WHOLE_NVRAM:
4382         stmdb   sp!, {lr}
4383         mov     r2, #0 /* 0th bytes of NVRAM */
4384         mov     r3, #NVRAM_LENGTH
4385         mov     r1, #0          /* not used in routine */
4386         ldr     r0, =NVRAM_IMAGE
4387         bl      NVRAM_XFER
4388         ldmia   sp!, {lr}
4389         bx      lr
4390 .endfunc
4391
4392 .func Get_MAC_Addr, GET_MAC_ADDR
4393 GET_MAC_ADDR:
4394         stmdb   sp!, {lr}
4395         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4396         mov     r3, #MAC_ADDRESS_LENGTH
4397         mov     r1, #0          /* not used in routine */
4398         ldr     r0, =MAC_ADDRESS_MIB
4399         bl      NVRAM_XFER
4400         ldmia   sp!, {lr}
4401         bx      lr
4402 .endfunc
4403 .ltorg
4404 .func Delay9, DELAY9
4405 DELAY9:
4406         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4407 DELAYLOOP:
4408         beq     DELAY9_done
4409         subs    r0, r0, #1
4410         b       DELAYLOOP
4411 DELAY9_done:
4412         bx      lr
4413 .endfunc
4414
4415 .func SP_Init, SP_INIT
4416 SP_INIT:
4417         mov     r1, #SP_SWRST
4418         ldr     r0, =SP_BASE
4419         str     r1, [r0, #SP_CR] /* reset the SPI */
4420         mov     r1, #0
4421         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4422         mov     r1, #SP_SPIEN
4423         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4424         str     r1, [r0, #SP_CR] /* enable the SPI */
4425
4426 /*  My guess would be this turns on the SPI clock */
4427         ldr     r3, =SPI_CGEN_BASE
4428         ldr     r1, [r3, #28]
4429         orr     r1, r1, #0x2000
4430         str     r1, [r3, #28]
4431
4432         ldr     r1, =0x2000c01
4433         str     r1, [r0, #SP_CSR0]
4434         ldr     r1, =0x2000201
4435         str     r1, [r0, #SP_CSR1]
4436         str     r1, [r0, #SP_CSR2]
4437         str     r1, [r0, #SP_CSR3]
4438         ldr     r1, [r0, #SP_SR]
4439         ldr     r0, [r0, #SP_RDR]
4440         bx      lr
4441 .endfunc
4442 .func NVRAM_Init, NVRAM_INIT
4443 NVRAM_INIT:
4444         ldr     r1, =SP_BASE
4445         ldr     r0, [r1, #SP_RDR]
4446         mov     r0, #NVRAM_CMD_RDSR
4447         str     r0, [r1, #SP_TDR]
4448 SP_loop1:
4449         ldr     r0, [r1, #SP_SR]
4450         tst     r0, #SP_TDRE
4451         beq     SP_loop1
4452
4453         mov     r0, #SPI_8CLOCKS
4454         str     r0, [r1, #SP_TDR]
4455 SP_loop2:
4456         ldr     r0, [r1, #SP_SR]
4457         tst     r0, #SP_TDRE
4458         beq     SP_loop2
4459
4460         ldr     r0, [r1, #SP_RDR]
4461 SP_loop3:
4462         ldr     r0, [r1, #SP_SR]
4463         tst     r0, #SP_RDRF
4464         beq     SP_loop3
4465
4466         ldr     r0, [r1, #SP_RDR]
4467         and     r0, r0, #255
4468         bx      lr
4469 .endfunc
4470
4471 .func NVRAM_Xfer, NVRAM_XFER
4472         /* r0 = dest address */
4473         /* r1 = not used */
4474         /* r2 = src address within NVRAM */
4475         /* r3 = length */
4476 NVRAM_XFER:
4477         stmdb   sp!, {r4, r5, lr}
4478         mov     r5, r0          /* save r0 (dest address) */
4479         mov     r4, r3          /* save r3 (length) */
4480         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4481         and     r0, r0, #8
4482         add     r0, r0, #NVRAM_CMD_READ
4483         ldr     r1, =NVRAM_SCRATCH
4484         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4485         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4486 _local1:
4487         bl      NVRAM_INIT
4488         tst     r0, #NVRAM_SR_RDY
4489         bne     _local1
4490         mov     r0, #20
4491         bl      DELAY9
4492         mov     r2, r4          /* length */
4493         mov     r1, r5          /* dest address */
4494         mov     r0, #2          /* bytes to transfer in command */
4495         bl      NVRAM_XFER2
4496         ldmia   sp!, {r4, r5, lr}
4497         bx      lr
4498 .endfunc
4499
4500 .func NVRAM_Xfer2, NVRAM_XFER2
4501 NVRAM_XFER2:
4502         stmdb   sp!, {r4, r5, r6, lr}
4503         ldr     r4, =SP_BASE
4504         mov     r3, #0
4505         cmp     r0, #0
4506         bls     _local2
4507         ldr     r5, =NVRAM_SCRATCH
4508 _local4:
4509         ldrb    r6, [r5, r3]
4510         str     r6, [r4, #SP_TDR]
4511 _local3:
4512         ldr     r6, [r4, #SP_SR]
4513         tst     r6, #SP_TDRE
4514         beq     _local3
4515         add     r3, r3, #1
4516         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4517         blo     _local4
4518 _local2:
4519         mov     r3, #SPI_8CLOCKS
4520         str     r3, [r4, #SP_TDR]
4521         ldr     r0, [r4, #SP_RDR]
4522 _local5:
4523         ldr     r0, [r4, #SP_SR]
4524         tst     r0, #SP_RDRF
4525         beq     _local5
4526         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 */
4527         mov     r0, #0
4528         cmp     r2, #0  /* r2 is # of bytes to copy in */
4529         bls     _local6
4530 _local7:
4531         ldr     r5, [r4, #SP_SR]
4532         tst     r5, #SP_TDRE
4533         beq     _local7
4534         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4535 _local8:
4536         ldr     r5, [r4, #SP_SR]
4537         tst     r5, #SP_RDRF
4538         beq     _local8
4539         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4540         strb    r5, [r1], #1 /* postindexed */
4541         add     r0, r0, #1
4542         cmp     r0, r2
4543         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4544 _local6:
4545         mov     r0, #200
4546         bl      DELAY9
4547         ldmia   sp!, {r4, r5, r6, lr}
4548         bx      lr
4549 #endif