drivers/net/wireless/atmel/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 <linux/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_set_mac_address(struct net_device *dev, void *p)
1299 {
1300         struct sockaddr *addr = p;
1301
1302         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1303         return atmel_open(dev);
1304 }
1305
1306 EXPORT_SYMBOL(atmel_open);
1307
1308 int atmel_open(struct net_device *dev)
1309 {
1310         struct atmel_private *priv = netdev_priv(dev);
1311         int i, channel, err;
1312
1313         /* any scheduled timer is no longer needed and might screw things up.. */
1314         del_timer_sync(&priv->management_timer);
1315
1316         /* Interrupts will not touch the card once in this state... */
1317         priv->station_state = STATION_STATE_DOWN;
1318
1319         if (priv->new_SSID_size) {
1320                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1321                 priv->SSID_size = priv->new_SSID_size;
1322                 priv->new_SSID_size = 0;
1323         }
1324         priv->BSS_list_entries = 0;
1325
1326         priv->AuthenticationRequestRetryCnt = 0;
1327         priv->AssociationRequestRetryCnt = 0;
1328         priv->ReAssociationRequestRetryCnt = 0;
1329         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1330         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1331
1332         priv->site_survey_state = SITE_SURVEY_IDLE;
1333         priv->station_is_associated = 0;
1334
1335         err = reset_atmel_card(dev);
1336         if (err)
1337                 return err;
1338
1339         if (priv->config_reg_domain) {
1340                 priv->reg_domain = priv->config_reg_domain;
1341                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1342         } else {
1343                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1344                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1345                         if (priv->reg_domain == channel_table[i].reg_domain)
1346                                 break;
1347                 if (i == ARRAY_SIZE(channel_table)) {
1348                         priv->reg_domain = REG_DOMAIN_MKK1;
1349                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1350                 }
1351         }
1352
1353         if ((channel = atmel_validate_channel(priv, priv->channel)))
1354                 priv->channel = channel;
1355
1356         /* this moves station_state on.... */
1357         atmel_scan(priv, 1);
1358
1359         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1360         return 0;
1361 }
1362
1363 static int atmel_close(struct net_device *dev)
1364 {
1365         struct atmel_private *priv = netdev_priv(dev);
1366
1367         /* Send event to userspace that we are disassociating */
1368         if (priv->station_state == STATION_STATE_READY) {
1369                 union iwreq_data wrqu;
1370
1371                 wrqu.data.length = 0;
1372                 wrqu.data.flags = 0;
1373                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1374                 eth_zero_addr(wrqu.ap_addr.sa_data);
1375                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1376         }
1377
1378         atmel_enter_state(priv, STATION_STATE_DOWN);
1379
1380         if (priv->bus_type == BUS_TYPE_PCCARD)
1381                 atmel_write16(dev, GCR, 0x0060);
1382         atmel_write16(dev, GCR, 0x0040);
1383         return 0;
1384 }
1385
1386 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1387 {
1388         /* check that channel is OK, if so return zero,
1389            else return suitable default channel */
1390         int i;
1391
1392         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1393                 if (priv->reg_domain == channel_table[i].reg_domain) {
1394                         if (channel >= channel_table[i].min &&
1395                             channel <= channel_table[i].max)
1396                                 return 0;
1397                         else
1398                                 return channel_table[i].min;
1399                 }
1400         return 0;
1401 }
1402
1403 static int atmel_proc_show(struct seq_file *m, void *v)
1404 {
1405         struct atmel_private *priv = m->private;
1406         int i;
1407         char *s, *r, *c;
1408
1409         seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1410
1411         if (priv->station_state != STATION_STATE_DOWN) {
1412                 seq_printf(m,
1413                            "Firmware version:\t%d.%d build %d\n"
1414                            "Firmware location:\t",
1415                            priv->host_info.major_version,
1416                            priv->host_info.minor_version,
1417                            priv->host_info.build_version);
1418
1419                 if (priv->card_type != CARD_TYPE_EEPROM)
1420                         seq_puts(m, "on card\n");
1421                 else if (priv->firmware)
1422                         seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1423                 else
1424                         seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1425
1426                 switch (priv->card_type) {
1427                 case CARD_TYPE_PARALLEL_FLASH:
1428                         c = "Parallel flash";
1429                         break;
1430                 case CARD_TYPE_SPI_FLASH:
1431                         c = "SPI flash\n";
1432                         break;
1433                 case CARD_TYPE_EEPROM:
1434                         c = "EEPROM";
1435                         break;
1436                 default:
1437                         c = "<unknown>";
1438                 }
1439
1440                 r = "<unknown>";
1441                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1442                         if (priv->reg_domain == channel_table[i].reg_domain)
1443                                 r = channel_table[i].name;
1444
1445                 seq_printf(m, "MAC memory type:\t%s\n", c);
1446                 seq_printf(m, "Regulatory domain:\t%s\n", r);
1447                 seq_printf(m, "Host CRC checking:\t%s\n",
1448                          priv->do_rx_crc ? "On" : "Off");
1449                 seq_printf(m, "WPA-capable firmware:\t%s\n",
1450                          priv->use_wpa ? "Yes" : "No");
1451         }
1452
1453         switch (priv->station_state) {
1454         case STATION_STATE_SCANNING:
1455                 s = "Scanning";
1456                 break;
1457         case STATION_STATE_JOINNING:
1458                 s = "Joining";
1459                 break;
1460         case STATION_STATE_AUTHENTICATING:
1461                 s = "Authenticating";
1462                 break;
1463         case STATION_STATE_ASSOCIATING:
1464                 s = "Associating";
1465                 break;
1466         case STATION_STATE_READY:
1467                 s = "Ready";
1468                 break;
1469         case STATION_STATE_REASSOCIATING:
1470                 s = "Reassociating";
1471                 break;
1472         case STATION_STATE_MGMT_ERROR:
1473                 s = "Management error";
1474                 break;
1475         case STATION_STATE_DOWN:
1476                 s = "Down";
1477                 break;
1478         default:
1479                 s = "<unknown>";
1480         }
1481
1482         seq_printf(m, "Current state:\t\t%s\n", s);
1483         return 0;
1484 }
1485
1486 static int atmel_proc_open(struct inode *inode, struct file *file)
1487 {
1488         return single_open(file, atmel_proc_show, PDE_DATA(inode));
1489 }
1490
1491 static const struct file_operations atmel_proc_fops = {
1492         .open           = atmel_proc_open,
1493         .read           = seq_read,
1494         .llseek         = seq_lseek,
1495         .release        = single_release,
1496 };
1497
1498 static const struct net_device_ops atmel_netdev_ops = {
1499         .ndo_open               = atmel_open,
1500         .ndo_stop               = atmel_close,
1501         .ndo_set_mac_address    = atmel_set_mac_address,
1502         .ndo_start_xmit         = start_tx,
1503         .ndo_do_ioctl           = atmel_ioctl,
1504         .ndo_validate_addr      = eth_validate_addr,
1505 };
1506
1507 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1508                                    const AtmelFWType fw_type,
1509                                    struct device *sys_dev,
1510                                    int (*card_present)(void *), void *card)
1511 {
1512         struct net_device *dev;
1513         struct atmel_private *priv;
1514         int rc;
1515
1516         /* Create the network device object. */
1517         dev = alloc_etherdev(sizeof(*priv));
1518         if (!dev)
1519                 return NULL;
1520
1521         if (dev_alloc_name(dev, dev->name) < 0) {
1522                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1523                 goto err_out_free;
1524         }
1525
1526         priv = netdev_priv(dev);
1527         priv->dev = dev;
1528         priv->sys_dev = sys_dev;
1529         priv->present_callback = card_present;
1530         priv->card = card;
1531         priv->firmware = NULL;
1532         priv->firmware_id[0] = '\0';
1533         priv->firmware_type = fw_type;
1534         if (firmware) /* module parameter */
1535                 strcpy(priv->firmware_id, firmware);
1536         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1537         priv->station_state = STATION_STATE_DOWN;
1538         priv->do_rx_crc = 0;
1539         /* For PCMCIA cards, some chips need CRC, some don't
1540            so we have to probe. */
1541         if (priv->bus_type == BUS_TYPE_PCCARD) {
1542                 priv->probe_crc = 1;
1543                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1544         } else
1545                 priv->probe_crc = 0;
1546         priv->last_qual = jiffies;
1547         priv->last_beacon_timestamp = 0;
1548         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1549         eth_zero_addr(priv->BSSID);
1550         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1551         priv->station_was_associated = 0;
1552
1553         priv->last_survey = jiffies;
1554         priv->preamble = LONG_PREAMBLE;
1555         priv->operating_mode = IW_MODE_INFRA;
1556         priv->connect_to_any_BSS = 0;
1557         priv->config_reg_domain = 0;
1558         priv->reg_domain = 0;
1559         priv->tx_rate = 3;
1560         priv->auto_tx_rate = 1;
1561         priv->channel = 4;
1562         priv->power_mode = 0;
1563         priv->SSID[0] = '\0';
1564         priv->SSID_size = 0;
1565         priv->new_SSID_size = 0;
1566         priv->frag_threshold = 2346;
1567         priv->rts_threshold = 2347;
1568         priv->short_retry = 7;
1569         priv->long_retry = 4;
1570
1571         priv->wep_is_on = 0;
1572         priv->default_key = 0;
1573         priv->encryption_level = 0;
1574         priv->exclude_unencrypted = 0;
1575         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1576         priv->use_wpa = 0;
1577         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1578         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1579
1580         priv->default_beacon_period = priv->beacon_period = 100;
1581         priv->listen_interval = 1;
1582
1583         init_timer(&priv->management_timer);
1584         spin_lock_init(&priv->irqlock);
1585         spin_lock_init(&priv->timerlock);
1586         priv->management_timer.function = atmel_management_timer;
1587         priv->management_timer.data = (unsigned long) dev;
1588
1589         dev->netdev_ops = &atmel_netdev_ops;
1590         dev->wireless_handlers = &atmel_handler_def;
1591         dev->irq = irq;
1592         dev->base_addr = port;
1593
1594         /* MTU range: 68 - 2312 */
1595         dev->min_mtu = 68;
1596         dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1597
1598         SET_NETDEV_DEV(dev, sys_dev);
1599
1600         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1601                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1602                 goto err_out_free;
1603         }
1604
1605         if (!request_region(dev->base_addr, 32,
1606                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1607                 goto err_out_irq;
1608         }
1609
1610         if (register_netdev(dev))
1611                 goto err_out_res;
1612
1613         if (!probe_atmel_card(dev)) {
1614                 unregister_netdev(dev);
1615                 goto err_out_res;
1616         }
1617
1618         netif_carrier_off(dev);
1619
1620         if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv))
1621                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1622
1623         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1624                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1625
1626         return dev;
1627
1628 err_out_res:
1629         release_region(dev->base_addr, 32);
1630 err_out_irq:
1631         free_irq(dev->irq, dev);
1632 err_out_free:
1633         free_netdev(dev);
1634         return NULL;
1635 }
1636
1637 EXPORT_SYMBOL(init_atmel_card);
1638
1639 void stop_atmel_card(struct net_device *dev)
1640 {
1641         struct atmel_private *priv = netdev_priv(dev);
1642
1643         /* put a brick on it... */
1644         if (priv->bus_type == BUS_TYPE_PCCARD)
1645                 atmel_write16(dev, GCR, 0x0060);
1646         atmel_write16(dev, GCR, 0x0040);
1647
1648         del_timer_sync(&priv->management_timer);
1649         unregister_netdev(dev);
1650         remove_proc_entry("driver/atmel", NULL);
1651         free_irq(dev->irq, dev);
1652         kfree(priv->firmware);
1653         release_region(dev->base_addr, 32);
1654         free_netdev(dev);
1655 }
1656
1657 EXPORT_SYMBOL(stop_atmel_card);
1658
1659 static int atmel_set_essid(struct net_device *dev,
1660                            struct iw_request_info *info,
1661                            struct iw_point *dwrq,
1662                            char *extra)
1663 {
1664         struct atmel_private *priv = netdev_priv(dev);
1665
1666         /* Check if we asked for `any' */
1667         if (dwrq->flags == 0) {
1668                 priv->connect_to_any_BSS = 1;
1669         } else {
1670                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1671
1672                 priv->connect_to_any_BSS = 0;
1673
1674                 /* Check the size of the string */
1675                 if (dwrq->length > MAX_SSID_LENGTH)
1676                          return -E2BIG;
1677                 if (index != 0)
1678                         return -EINVAL;
1679
1680                 memcpy(priv->new_SSID, extra, dwrq->length);
1681                 priv->new_SSID_size = dwrq->length;
1682         }
1683
1684         return -EINPROGRESS;
1685 }
1686
1687 static int atmel_get_essid(struct net_device *dev,
1688                            struct iw_request_info *info,
1689                            struct iw_point *dwrq,
1690                            char *extra)
1691 {
1692         struct atmel_private *priv = netdev_priv(dev);
1693
1694         /* Get the current SSID */
1695         if (priv->new_SSID_size != 0) {
1696                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1697                 dwrq->length = priv->new_SSID_size;
1698         } else {
1699                 memcpy(extra, priv->SSID, priv->SSID_size);
1700                 dwrq->length = priv->SSID_size;
1701         }
1702
1703         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1704
1705         return 0;
1706 }
1707
1708 static int atmel_get_wap(struct net_device *dev,
1709                          struct iw_request_info *info,
1710                          struct sockaddr *awrq,
1711                          char *extra)
1712 {
1713         struct atmel_private *priv = netdev_priv(dev);
1714         memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1715         awrq->sa_family = ARPHRD_ETHER;
1716
1717         return 0;
1718 }
1719
1720 static int atmel_set_encode(struct net_device *dev,
1721                             struct iw_request_info *info,
1722                             struct iw_point *dwrq,
1723                             char *extra)
1724 {
1725         struct atmel_private *priv = netdev_priv(dev);
1726
1727         /* Basic checking: do we have a key to set ?
1728          * Note : with the new API, it's impossible to get a NULL pointer.
1729          * Therefore, we need to check a key size == 0 instead.
1730          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1731          * when no key is present (only change flags), but older versions
1732          * don't do it. - Jean II */
1733         if (dwrq->length > 0) {
1734                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1735                 int current_index = priv->default_key;
1736                 /* Check the size of the key */
1737                 if (dwrq->length > 13) {
1738                         return -EINVAL;
1739                 }
1740                 /* Check the index (none -> use current) */
1741                 if (index < 0 || index >= 4)
1742                         index = current_index;
1743                 else
1744                         priv->default_key = index;
1745                 /* Set the length */
1746                 if (dwrq->length > 5)
1747                         priv->wep_key_len[index] = 13;
1748                 else
1749                         if (dwrq->length > 0)
1750                                 priv->wep_key_len[index] = 5;
1751                         else
1752                                 /* Disable the key */
1753                                 priv->wep_key_len[index] = 0;
1754                 /* Check if the key is not marked as invalid */
1755                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1756                         /* Cleanup */
1757                         memset(priv->wep_keys[index], 0, 13);
1758                         /* Copy the key in the driver */
1759                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1760                 }
1761                 /* WE specify that if a valid key is set, encryption
1762                  * should be enabled (user may turn it off later)
1763                  * This is also how "iwconfig ethX key on" works */
1764                 if (index == current_index &&
1765                     priv->wep_key_len[index] > 0) {
1766                         priv->wep_is_on = 1;
1767                         priv->exclude_unencrypted = 1;
1768                         if (priv->wep_key_len[index] > 5) {
1769                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1770                                 priv->encryption_level = 2;
1771                         } else {
1772                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1773                                 priv->encryption_level = 1;
1774                         }
1775                 }
1776         } else {
1777                 /* Do we want to just set the transmit key index ? */
1778                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1779                 if (index >= 0 && index < 4) {
1780                         priv->default_key = index;
1781                 } else
1782                         /* Don't complain if only change the mode */
1783                         if (!(dwrq->flags & IW_ENCODE_MODE))
1784                                 return -EINVAL;
1785         }
1786         /* Read the flags */
1787         if (dwrq->flags & IW_ENCODE_DISABLED) {
1788                 priv->wep_is_on = 0;
1789                 priv->encryption_level = 0;
1790                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1791         } else {
1792                 priv->wep_is_on = 1;
1793                 if (priv->wep_key_len[priv->default_key] > 5) {
1794                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1795                         priv->encryption_level = 2;
1796                 } else {
1797                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1798                         priv->encryption_level = 1;
1799                 }
1800         }
1801         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1802                 priv->exclude_unencrypted = 1;
1803         if (dwrq->flags & IW_ENCODE_OPEN)
1804                 priv->exclude_unencrypted = 0;
1805
1806         return -EINPROGRESS;            /* Call commit handler */
1807 }
1808
1809 static int atmel_get_encode(struct net_device *dev,
1810                             struct iw_request_info *info,
1811                             struct iw_point *dwrq,
1812                             char *extra)
1813 {
1814         struct atmel_private *priv = netdev_priv(dev);
1815         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1816
1817         if (!priv->wep_is_on)
1818                 dwrq->flags = IW_ENCODE_DISABLED;
1819         else {
1820                 if (priv->exclude_unencrypted)
1821                         dwrq->flags = IW_ENCODE_RESTRICTED;
1822                 else
1823                         dwrq->flags = IW_ENCODE_OPEN;
1824         }
1825                 /* Which key do we want ? -1 -> tx index */
1826         if (index < 0 || index >= 4)
1827                 index = priv->default_key;
1828         dwrq->flags |= index + 1;
1829         /* Copy the key to the user buffer */
1830         dwrq->length = priv->wep_key_len[index];
1831         if (dwrq->length > 16) {
1832                 dwrq->length = 0;
1833         } else {
1834                 memset(extra, 0, 16);
1835                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1836         }
1837
1838         return 0;
1839 }
1840
1841 static int atmel_set_encodeext(struct net_device *dev,
1842                             struct iw_request_info *info,
1843                             union iwreq_data *wrqu,
1844                             char *extra)
1845 {
1846         struct atmel_private *priv = netdev_priv(dev);
1847         struct iw_point *encoding = &wrqu->encoding;
1848         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1849         int idx, key_len, alg = ext->alg, set_key = 1;
1850
1851         /* Determine and validate the key index */
1852         idx = encoding->flags & IW_ENCODE_INDEX;
1853         if (idx) {
1854                 if (idx < 1 || idx > 4)
1855                         return -EINVAL;
1856                 idx--;
1857         } else
1858                 idx = priv->default_key;
1859
1860         if (encoding->flags & IW_ENCODE_DISABLED)
1861             alg = IW_ENCODE_ALG_NONE;
1862
1863         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1864                 priv->default_key = idx;
1865                 set_key = ext->key_len > 0 ? 1 : 0;
1866         }
1867
1868         if (set_key) {
1869                 /* Set the requested key first */
1870                 switch (alg) {
1871                 case IW_ENCODE_ALG_NONE:
1872                         priv->wep_is_on = 0;
1873                         priv->encryption_level = 0;
1874                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1875                         break;
1876                 case IW_ENCODE_ALG_WEP:
1877                         if (ext->key_len > 5) {
1878                                 priv->wep_key_len[idx] = 13;
1879                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1880                                 priv->encryption_level = 2;
1881                         } else if (ext->key_len > 0) {
1882                                 priv->wep_key_len[idx] = 5;
1883                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1884                                 priv->encryption_level = 1;
1885                         } else {
1886                                 return -EINVAL;
1887                         }
1888                         priv->wep_is_on = 1;
1889                         memset(priv->wep_keys[idx], 0, 13);
1890                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1891                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1892                         break;
1893                 default:
1894                         return -EINVAL;
1895                 }
1896         }
1897
1898         return -EINPROGRESS;
1899 }
1900
1901 static int atmel_get_encodeext(struct net_device *dev,
1902                             struct iw_request_info *info,
1903                             union iwreq_data *wrqu,
1904                             char *extra)
1905 {
1906         struct atmel_private *priv = netdev_priv(dev);
1907         struct iw_point *encoding = &wrqu->encoding;
1908         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1909         int idx, max_key_len;
1910
1911         max_key_len = encoding->length - sizeof(*ext);
1912         if (max_key_len < 0)
1913                 return -EINVAL;
1914
1915         idx = encoding->flags & IW_ENCODE_INDEX;
1916         if (idx) {
1917                 if (idx < 1 || idx > 4)
1918                         return -EINVAL;
1919                 idx--;
1920         } else
1921                 idx = priv->default_key;
1922
1923         encoding->flags = idx + 1;
1924         memset(ext, 0, sizeof(*ext));
1925
1926         if (!priv->wep_is_on) {
1927                 ext->alg = IW_ENCODE_ALG_NONE;
1928                 ext->key_len = 0;
1929                 encoding->flags |= IW_ENCODE_DISABLED;
1930         } else {
1931                 if (priv->encryption_level > 0)
1932                         ext->alg = IW_ENCODE_ALG_WEP;
1933                 else
1934                         return -EINVAL;
1935
1936                 ext->key_len = priv->wep_key_len[idx];
1937                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1938                 encoding->flags |= IW_ENCODE_ENABLED;
1939         }
1940
1941         return 0;
1942 }
1943
1944 static int atmel_set_auth(struct net_device *dev,
1945                                struct iw_request_info *info,
1946                                union iwreq_data *wrqu, char *extra)
1947 {
1948         struct atmel_private *priv = netdev_priv(dev);
1949         struct iw_param *param = &wrqu->param;
1950
1951         switch (param->flags & IW_AUTH_INDEX) {
1952         case IW_AUTH_WPA_VERSION:
1953         case IW_AUTH_CIPHER_PAIRWISE:
1954         case IW_AUTH_CIPHER_GROUP:
1955         case IW_AUTH_KEY_MGMT:
1956         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1957         case IW_AUTH_PRIVACY_INVOKED:
1958                 /*
1959                  * atmel does not use these parameters
1960                  */
1961                 break;
1962
1963         case IW_AUTH_DROP_UNENCRYPTED:
1964                 priv->exclude_unencrypted = param->value ? 1 : 0;
1965                 break;
1966
1967         case IW_AUTH_80211_AUTH_ALG: {
1968                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1969                                 priv->exclude_unencrypted = 1;
1970                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1971                                 priv->exclude_unencrypted = 0;
1972                         } else
1973                                 return -EINVAL;
1974                         break;
1975                 }
1976
1977         case IW_AUTH_WPA_ENABLED:
1978                 /* Silently accept disable of WPA */
1979                 if (param->value > 0)
1980                         return -EOPNOTSUPP;
1981                 break;
1982
1983         default:
1984                 return -EOPNOTSUPP;
1985         }
1986         return -EINPROGRESS;
1987 }
1988
1989 static int atmel_get_auth(struct net_device *dev,
1990                                struct iw_request_info *info,
1991                                union iwreq_data *wrqu, char *extra)
1992 {
1993         struct atmel_private *priv = netdev_priv(dev);
1994         struct iw_param *param = &wrqu->param;
1995
1996         switch (param->flags & IW_AUTH_INDEX) {
1997         case IW_AUTH_DROP_UNENCRYPTED:
1998                 param->value = priv->exclude_unencrypted;
1999                 break;
2000
2001         case IW_AUTH_80211_AUTH_ALG:
2002                 if (priv->exclude_unencrypted == 1)
2003                         param->value = IW_AUTH_ALG_SHARED_KEY;
2004                 else
2005                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2006                 break;
2007
2008         case IW_AUTH_WPA_ENABLED:
2009                 param->value = 0;
2010                 break;
2011
2012         default:
2013                 return -EOPNOTSUPP;
2014         }
2015         return 0;
2016 }
2017
2018
2019 static int atmel_get_name(struct net_device *dev,
2020                           struct iw_request_info *info,
2021                           char *cwrq,
2022                           char *extra)
2023 {
2024         strcpy(cwrq, "IEEE 802.11-DS");
2025         return 0;
2026 }
2027
2028 static int atmel_set_rate(struct net_device *dev,
2029                           struct iw_request_info *info,
2030                           struct iw_param *vwrq,
2031                           char *extra)
2032 {
2033         struct atmel_private *priv = netdev_priv(dev);
2034
2035         if (vwrq->fixed == 0) {
2036                 priv->tx_rate = 3;
2037                 priv->auto_tx_rate = 1;
2038         } else {
2039                 priv->auto_tx_rate = 0;
2040
2041                 /* Which type of value ? */
2042                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2043                         /* Setting by rate index */
2044                         priv->tx_rate = vwrq->value;
2045                 } else {
2046                 /* Setting by frequency value */
2047                         switch (vwrq->value) {
2048                         case  1000000:
2049                                 priv->tx_rate = 0;
2050                                 break;
2051                         case  2000000:
2052                                 priv->tx_rate = 1;
2053                                 break;
2054                         case  5500000:
2055                                 priv->tx_rate = 2;
2056                                 break;
2057                         case 11000000:
2058                                 priv->tx_rate = 3;
2059                                 break;
2060                         default:
2061                                 return -EINVAL;
2062                         }
2063                 }
2064         }
2065
2066         return -EINPROGRESS;
2067 }
2068
2069 static int atmel_set_mode(struct net_device *dev,
2070                           struct iw_request_info *info,
2071                           __u32 *uwrq,
2072                           char *extra)
2073 {
2074         struct atmel_private *priv = netdev_priv(dev);
2075
2076         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2077                 return -EINVAL;
2078
2079         priv->operating_mode = *uwrq;
2080         return -EINPROGRESS;
2081 }
2082
2083 static int atmel_get_mode(struct net_device *dev,
2084                           struct iw_request_info *info,
2085                           __u32 *uwrq,
2086                           char *extra)
2087 {
2088         struct atmel_private *priv = netdev_priv(dev);
2089
2090         *uwrq = priv->operating_mode;
2091         return 0;
2092 }
2093
2094 static int atmel_get_rate(struct net_device *dev,
2095                          struct iw_request_info *info,
2096                          struct iw_param *vwrq,
2097                          char *extra)
2098 {
2099         struct atmel_private *priv = netdev_priv(dev);
2100
2101         if (priv->auto_tx_rate) {
2102                 vwrq->fixed = 0;
2103                 vwrq->value = 11000000;
2104         } else {
2105                 vwrq->fixed = 1;
2106                 switch (priv->tx_rate) {
2107                 case 0:
2108                         vwrq->value =  1000000;
2109                         break;
2110                 case 1:
2111                         vwrq->value =  2000000;
2112                         break;
2113                 case 2:
2114                         vwrq->value =  5500000;
2115                         break;
2116                 case 3:
2117                         vwrq->value = 11000000;
2118                         break;
2119                 }
2120         }
2121         return 0;
2122 }
2123
2124 static int atmel_set_power(struct net_device *dev,
2125                            struct iw_request_info *info,
2126                            struct iw_param *vwrq,
2127                            char *extra)
2128 {
2129         struct atmel_private *priv = netdev_priv(dev);
2130         priv->power_mode = vwrq->disabled ? 0 : 1;
2131         return -EINPROGRESS;
2132 }
2133
2134 static int atmel_get_power(struct net_device *dev,
2135                            struct iw_request_info *info,
2136                            struct iw_param *vwrq,
2137                            char *extra)
2138 {
2139         struct atmel_private *priv = netdev_priv(dev);
2140         vwrq->disabled = priv->power_mode ? 0 : 1;
2141         vwrq->flags = IW_POWER_ON;
2142         return 0;
2143 }
2144
2145 static int atmel_set_retry(struct net_device *dev,
2146                            struct iw_request_info *info,
2147                            struct iw_param *vwrq,
2148                            char *extra)
2149 {
2150         struct atmel_private *priv = netdev_priv(dev);
2151
2152         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2153                 if (vwrq->flags & IW_RETRY_LONG)
2154                         priv->long_retry = vwrq->value;
2155                 else if (vwrq->flags & IW_RETRY_SHORT)
2156                         priv->short_retry = vwrq->value;
2157                 else {
2158                         /* No modifier : set both */
2159                         priv->long_retry = vwrq->value;
2160                         priv->short_retry = vwrq->value;
2161                 }
2162                 return -EINPROGRESS;
2163         }
2164
2165         return -EINVAL;
2166 }
2167
2168 static int atmel_get_retry(struct net_device *dev,
2169                            struct iw_request_info *info,
2170                            struct iw_param *vwrq,
2171                            char *extra)
2172 {
2173         struct atmel_private *priv = netdev_priv(dev);
2174
2175         vwrq->disabled = 0;      /* Can't be disabled */
2176
2177         /* Note : by default, display the short retry number */
2178         if (vwrq->flags & IW_RETRY_LONG) {
2179                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2180                 vwrq->value = priv->long_retry;
2181         } else {
2182                 vwrq->flags = IW_RETRY_LIMIT;
2183                 vwrq->value = priv->short_retry;
2184                 if (priv->long_retry != priv->short_retry)
2185                         vwrq->flags |= IW_RETRY_SHORT;
2186         }
2187
2188         return 0;
2189 }
2190
2191 static int atmel_set_rts(struct net_device *dev,
2192                          struct iw_request_info *info,
2193                          struct iw_param *vwrq,
2194                          char *extra)
2195 {
2196         struct atmel_private *priv = netdev_priv(dev);
2197         int rthr = vwrq->value;
2198
2199         if (vwrq->disabled)
2200                 rthr = 2347;
2201         if ((rthr < 0) || (rthr > 2347)) {
2202                 return -EINVAL;
2203         }
2204         priv->rts_threshold = rthr;
2205
2206         return -EINPROGRESS;            /* Call commit handler */
2207 }
2208
2209 static int atmel_get_rts(struct net_device *dev,
2210                          struct iw_request_info *info,
2211                          struct iw_param *vwrq,
2212                          char *extra)
2213 {
2214         struct atmel_private *priv = netdev_priv(dev);
2215
2216         vwrq->value = priv->rts_threshold;
2217         vwrq->disabled = (vwrq->value >= 2347);
2218         vwrq->fixed = 1;
2219
2220         return 0;
2221 }
2222
2223 static int atmel_set_frag(struct net_device *dev,
2224                           struct iw_request_info *info,
2225                           struct iw_param *vwrq,
2226                           char *extra)
2227 {
2228         struct atmel_private *priv = netdev_priv(dev);
2229         int fthr = vwrq->value;
2230
2231         if (vwrq->disabled)
2232                 fthr = 2346;
2233         if ((fthr < 256) || (fthr > 2346)) {
2234                 return -EINVAL;
2235         }
2236         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2237         priv->frag_threshold = fthr;
2238
2239         return -EINPROGRESS;            /* Call commit handler */
2240 }
2241
2242 static int atmel_get_frag(struct net_device *dev,
2243                           struct iw_request_info *info,
2244                           struct iw_param *vwrq,
2245                           char *extra)
2246 {
2247         struct atmel_private *priv = netdev_priv(dev);
2248
2249         vwrq->value = priv->frag_threshold;
2250         vwrq->disabled = (vwrq->value >= 2346);
2251         vwrq->fixed = 1;
2252
2253         return 0;
2254 }
2255
2256 static int atmel_set_freq(struct net_device *dev,
2257                           struct iw_request_info *info,
2258                           struct iw_freq *fwrq,
2259                           char *extra)
2260 {
2261         struct atmel_private *priv = netdev_priv(dev);
2262         int rc = -EINPROGRESS;          /* Call commit handler */
2263
2264         /* If setting by frequency, convert to a channel */
2265         if (fwrq->e == 1) {
2266                 int f = fwrq->m / 100000;
2267
2268                 /* Hack to fall through... */
2269                 fwrq->e = 0;
2270                 fwrq->m = ieee80211_frequency_to_channel(f);
2271         }
2272         /* Setting by channel number */
2273         if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2274                 rc = -EOPNOTSUPP;
2275         else {
2276                 int channel = fwrq->m;
2277                 if (atmel_validate_channel(priv, channel) == 0) {
2278                         priv->channel = channel;
2279                 } else {
2280                         rc = -EINVAL;
2281                 }
2282         }
2283         return rc;
2284 }
2285
2286 static int atmel_get_freq(struct net_device *dev,
2287                           struct iw_request_info *info,
2288                           struct iw_freq *fwrq,
2289                           char *extra)
2290 {
2291         struct atmel_private *priv = netdev_priv(dev);
2292
2293         fwrq->m = priv->channel;
2294         fwrq->e = 0;
2295         return 0;
2296 }
2297
2298 static int atmel_set_scan(struct net_device *dev,
2299                           struct iw_request_info *info,
2300                           struct iw_point *dwrq,
2301                           char *extra)
2302 {
2303         struct atmel_private *priv = netdev_priv(dev);
2304         unsigned long flags;
2305
2306         /* Note : you may have realised that, as this is a SET operation,
2307          * this is privileged and therefore a normal user can't
2308          * perform scanning.
2309          * This is not an error, while the device perform scanning,
2310          * traffic doesn't flow, so it's a perfect DoS...
2311          * Jean II */
2312
2313         if (priv->station_state == STATION_STATE_DOWN)
2314                 return -EAGAIN;
2315
2316         /* Timeout old surveys. */
2317         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2318                 priv->site_survey_state = SITE_SURVEY_IDLE;
2319         priv->last_survey = jiffies;
2320
2321         /* Initiate a scan command */
2322         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2323                 return -EBUSY;
2324
2325         del_timer_sync(&priv->management_timer);
2326         spin_lock_irqsave(&priv->irqlock, flags);
2327
2328         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2329         priv->fast_scan = 0;
2330         atmel_scan(priv, 0);
2331         spin_unlock_irqrestore(&priv->irqlock, flags);
2332
2333         return 0;
2334 }
2335
2336 static int atmel_get_scan(struct net_device *dev,
2337                           struct iw_request_info *info,
2338                           struct iw_point *dwrq,
2339                           char *extra)
2340 {
2341         struct atmel_private *priv = netdev_priv(dev);
2342         int i;
2343         char *current_ev = extra;
2344         struct iw_event iwe;
2345
2346         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2347                 return -EAGAIN;
2348
2349         for (i = 0; i < priv->BSS_list_entries; i++) {
2350                 iwe.cmd = SIOCGIWAP;
2351                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2352                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2353                 current_ev = iwe_stream_add_event(info, current_ev,
2354                                                   extra + IW_SCAN_MAX_DATA,
2355                                                   &iwe, IW_EV_ADDR_LEN);
2356
2357                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2358                 if (iwe.u.data.length > 32)
2359                         iwe.u.data.length = 32;
2360                 iwe.cmd = SIOCGIWESSID;
2361                 iwe.u.data.flags = 1;
2362                 current_ev = iwe_stream_add_point(info, current_ev,
2363                                                   extra + IW_SCAN_MAX_DATA,
2364                                                   &iwe, priv->BSSinfo[i].SSID);
2365
2366                 iwe.cmd = SIOCGIWMODE;
2367                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2368                 current_ev = iwe_stream_add_event(info, current_ev,
2369                                                   extra + IW_SCAN_MAX_DATA,
2370                                                   &iwe, IW_EV_UINT_LEN);
2371
2372                 iwe.cmd = SIOCGIWFREQ;
2373                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2374                 iwe.u.freq.e = 0;
2375                 current_ev = iwe_stream_add_event(info, current_ev,
2376                                                   extra + IW_SCAN_MAX_DATA,
2377                                                   &iwe, IW_EV_FREQ_LEN);
2378
2379                 /* Add quality statistics */
2380                 iwe.cmd = IWEVQUAL;
2381                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2382                 iwe.u.qual.qual  = iwe.u.qual.level;
2383                 /* iwe.u.qual.noise  = SOMETHING */
2384                 current_ev = iwe_stream_add_event(info, current_ev,
2385                                                   extra + IW_SCAN_MAX_DATA,
2386                                                   &iwe, IW_EV_QUAL_LEN);
2387
2388
2389                 iwe.cmd = SIOCGIWENCODE;
2390                 if (priv->BSSinfo[i].UsingWEP)
2391                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2392                 else
2393                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2394                 iwe.u.data.length = 0;
2395                 current_ev = iwe_stream_add_point(info, current_ev,
2396                                                   extra + IW_SCAN_MAX_DATA,
2397                                                   &iwe, NULL);
2398         }
2399
2400         /* Length of data */
2401         dwrq->length = (current_ev - extra);
2402         dwrq->flags = 0;
2403
2404         return 0;
2405 }
2406
2407 static int atmel_get_range(struct net_device *dev,
2408                            struct iw_request_info *info,
2409                            struct iw_point *dwrq,
2410                            char *extra)
2411 {
2412         struct atmel_private *priv = netdev_priv(dev);
2413         struct iw_range *range = (struct iw_range *) extra;
2414         int k, i, j;
2415
2416         dwrq->length = sizeof(struct iw_range);
2417         memset(range, 0, sizeof(struct iw_range));
2418         range->min_nwid = 0x0000;
2419         range->max_nwid = 0x0000;
2420         range->num_channels = 0;
2421         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2422                 if (priv->reg_domain == channel_table[j].reg_domain) {
2423                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2424                         break;
2425                 }
2426         if (range->num_channels != 0) {
2427                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2428                         range->freq[k].i = i; /* List index */
2429
2430                         /* Values in MHz -> * 10^5 * 10 */
2431                         range->freq[k].m = 100000 *
2432                          ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2433                         range->freq[k++].e = 1;
2434                 }
2435                 range->num_frequency = k;
2436         }
2437
2438         range->max_qual.qual = 100;
2439         range->max_qual.level = 100;
2440         range->max_qual.noise = 0;
2441         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2442
2443         range->avg_qual.qual = 50;
2444         range->avg_qual.level = 50;
2445         range->avg_qual.noise = 0;
2446         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2447
2448         range->sensitivity = 0;
2449
2450         range->bitrate[0] =  1000000;
2451         range->bitrate[1] =  2000000;
2452         range->bitrate[2] =  5500000;
2453         range->bitrate[3] = 11000000;
2454         range->num_bitrates = 4;
2455
2456         range->min_rts = 0;
2457         range->max_rts = 2347;
2458         range->min_frag = 256;
2459         range->max_frag = 2346;
2460
2461         range->encoding_size[0] = 5;
2462         range->encoding_size[1] = 13;
2463         range->num_encoding_sizes = 2;
2464         range->max_encoding_tokens = 4;
2465
2466         range->pmp_flags = IW_POWER_ON;
2467         range->pmt_flags = IW_POWER_ON;
2468         range->pm_capa = 0;
2469
2470         range->we_version_source = WIRELESS_EXT;
2471         range->we_version_compiled = WIRELESS_EXT;
2472         range->retry_capa = IW_RETRY_LIMIT ;
2473         range->retry_flags = IW_RETRY_LIMIT;
2474         range->r_time_flags = 0;
2475         range->min_retry = 1;
2476         range->max_retry = 65535;
2477
2478         return 0;
2479 }
2480
2481 static int atmel_set_wap(struct net_device *dev,
2482                          struct iw_request_info *info,
2483                          struct sockaddr *awrq,
2484                          char *extra)
2485 {
2486         struct atmel_private *priv = netdev_priv(dev);
2487         int i;
2488         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2489         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2490         unsigned long flags;
2491
2492         if (awrq->sa_family != ARPHRD_ETHER)
2493                 return -EINVAL;
2494
2495         if (!memcmp(any, awrq->sa_data, 6) ||
2496             !memcmp(off, awrq->sa_data, 6)) {
2497                 del_timer_sync(&priv->management_timer);
2498                 spin_lock_irqsave(&priv->irqlock, flags);
2499                 atmel_scan(priv, 1);
2500                 spin_unlock_irqrestore(&priv->irqlock, flags);
2501                 return 0;
2502         }
2503
2504         for (i = 0; i < priv->BSS_list_entries; i++) {
2505                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2506                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2507                                 return -EINVAL;
2508                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2509                                 return -EINVAL;
2510                         } else {
2511                                 del_timer_sync(&priv->management_timer);
2512                                 spin_lock_irqsave(&priv->irqlock, flags);
2513                                 atmel_join_bss(priv, i);
2514                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2515                                 return 0;
2516                         }
2517                 }
2518         }
2519
2520         return -EINVAL;
2521 }
2522
2523 static int atmel_config_commit(struct net_device *dev,
2524                                struct iw_request_info *info,    /* NULL */
2525                                void *zwrq,                      /* NULL */
2526                                char *extra)                     /* NULL */
2527 {
2528         return atmel_open(dev);
2529 }
2530
2531 static const iw_handler atmel_handler[] =
2532 {
2533         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2534         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2535         (iw_handler) NULL,                      /* SIOCSIWNWID */
2536         (iw_handler) NULL,                      /* SIOCGIWNWID */
2537         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2538         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2539         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2540         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2541         (iw_handler) NULL,                      /* SIOCSIWSENS */
2542         (iw_handler) NULL,                      /* SIOCGIWSENS */
2543         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2544         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2545         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2546         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2547         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2548         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2549         (iw_handler) NULL,                      /* SIOCSIWSPY */
2550         (iw_handler) NULL,                      /* SIOCGIWSPY */
2551         (iw_handler) NULL,                      /* -- hole -- */
2552         (iw_handler) NULL,                      /* -- hole -- */
2553         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2554         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2555         (iw_handler) NULL,                      /* -- hole -- */
2556         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2557         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2558         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2559         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2560         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2561         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2562         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2563         (iw_handler) NULL,                      /* -- hole -- */
2564         (iw_handler) NULL,                      /* -- hole -- */
2565         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2566         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2567         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2568         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2569         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2570         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2571         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2572         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2573         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2574         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2575         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2576         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2577         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2578         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2579         (iw_handler) NULL,                      /* -- hole -- */
2580         (iw_handler) NULL,                      /* -- hole -- */
2581         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2582         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2583         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2584         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2585         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2586         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2587         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2588 };
2589
2590 static const iw_handler atmel_private_handler[] =
2591 {
2592         NULL,                           /* SIOCIWFIRSTPRIV */
2593 };
2594
2595 struct atmel_priv_ioctl {
2596         char id[32];
2597         unsigned char __user *data;
2598         unsigned short len;
2599 };
2600
2601 #define ATMELFWL        SIOCIWFIRSTPRIV
2602 #define ATMELIDIFC      ATMELFWL + 1
2603 #define ATMELRD         ATMELFWL + 2
2604 #define ATMELMAGIC 0x51807
2605 #define REGDOMAINSZ 20
2606
2607 static const struct iw_priv_args atmel_private_args[] = {
2608         {
2609                 .cmd = ATMELFWL,
2610                 .set_args = IW_PRIV_TYPE_BYTE
2611                                 | IW_PRIV_SIZE_FIXED
2612                                 | sizeof(struct atmel_priv_ioctl),
2613                 .get_args = IW_PRIV_TYPE_NONE,
2614                 .name = "atmelfwl"
2615         }, {
2616                 .cmd = ATMELIDIFC,
2617                 .set_args = IW_PRIV_TYPE_NONE,
2618                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2619                 .name = "atmelidifc"
2620         }, {
2621                 .cmd = ATMELRD,
2622                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2623                 .get_args = IW_PRIV_TYPE_NONE,
2624                 .name = "regdomain"
2625         },
2626 };
2627
2628 static const struct iw_handler_def atmel_handler_def = {
2629         .num_standard   = ARRAY_SIZE(atmel_handler),
2630         .num_private    = ARRAY_SIZE(atmel_private_handler),
2631         .num_private_args = ARRAY_SIZE(atmel_private_args),
2632         .standard       = (iw_handler *) atmel_handler,
2633         .private        = (iw_handler *) atmel_private_handler,
2634         .private_args   = (struct iw_priv_args *) atmel_private_args,
2635         .get_wireless_stats = atmel_get_wireless_stats
2636 };
2637
2638 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2639 {
2640         int i, rc = 0;
2641         struct atmel_private *priv = netdev_priv(dev);
2642         struct atmel_priv_ioctl com;
2643         struct iwreq *wrq = (struct iwreq *) rq;
2644         unsigned char *new_firmware;
2645         char domain[REGDOMAINSZ + 1];
2646
2647         switch (cmd) {
2648         case ATMELIDIFC:
2649                 wrq->u.param.value = ATMELMAGIC;
2650                 break;
2651
2652         case ATMELFWL:
2653                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2654                         rc = -EFAULT;
2655                         break;
2656                 }
2657
2658                 if (!capable(CAP_NET_ADMIN)) {
2659                         rc = -EPERM;
2660                         break;
2661                 }
2662
2663                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2664                         rc = -ENOMEM;
2665                         break;
2666                 }
2667
2668                 if (copy_from_user(new_firmware, com.data, com.len)) {
2669                         kfree(new_firmware);
2670                         rc = -EFAULT;
2671                         break;
2672                 }
2673
2674                 kfree(priv->firmware);
2675
2676                 priv->firmware = new_firmware;
2677                 priv->firmware_length = com.len;
2678                 strncpy(priv->firmware_id, com.id, 31);
2679                 priv->firmware_id[31] = '\0';
2680                 break;
2681
2682         case ATMELRD:
2683                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2684                         rc = -EFAULT;
2685                         break;
2686                 }
2687
2688                 if (!capable(CAP_NET_ADMIN)) {
2689                         rc = -EPERM;
2690                         break;
2691                 }
2692
2693                 domain[REGDOMAINSZ] = 0;
2694                 rc = -EINVAL;
2695                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2696                         if (!strcasecmp(channel_table[i].name, domain)) {
2697                                 priv->config_reg_domain = channel_table[i].reg_domain;
2698                                 rc = 0;
2699                         }
2700                 }
2701
2702                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2703                         rc = atmel_open(dev);
2704                 break;
2705
2706         default:
2707                 rc = -EOPNOTSUPP;
2708         }
2709
2710         return rc;
2711 }
2712
2713 struct auth_body {
2714         __le16 alg;
2715         __le16 trans_seq;
2716         __le16 status;
2717         u8 el_id;
2718         u8 chall_text_len;
2719         u8 chall_text[253];
2720 };
2721
2722 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2723 {
2724         int old_state = priv->station_state;
2725
2726         if (new_state == old_state)
2727                 return;
2728
2729         priv->station_state = new_state;
2730
2731         if (new_state == STATION_STATE_READY) {
2732                 netif_start_queue(priv->dev);
2733                 netif_carrier_on(priv->dev);
2734         }
2735
2736         if (old_state == STATION_STATE_READY) {
2737                 netif_carrier_off(priv->dev);
2738                 if (netif_running(priv->dev))
2739                         netif_stop_queue(priv->dev);
2740                 priv->last_beacon_timestamp = 0;
2741         }
2742 }
2743
2744 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2745 {
2746         struct {
2747                 u8 BSSID[ETH_ALEN];
2748                 u8 SSID[MAX_SSID_LENGTH];
2749                 u8 scan_type;
2750                 u8 channel;
2751                 __le16 BSS_type;
2752                 __le16 min_channel_time;
2753                 __le16 max_channel_time;
2754                 u8 options;
2755                 u8 SSID_size;
2756         } cmd;
2757
2758         eth_broadcast_addr(cmd.BSSID);
2759
2760         if (priv->fast_scan) {
2761                 cmd.SSID_size = priv->SSID_size;
2762                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2763                 cmd.min_channel_time = cpu_to_le16(10);
2764                 cmd.max_channel_time = cpu_to_le16(50);
2765         } else {
2766                 priv->BSS_list_entries = 0;
2767                 cmd.SSID_size = 0;
2768                 cmd.min_channel_time = cpu_to_le16(10);
2769                 cmd.max_channel_time = cpu_to_le16(120);
2770         }
2771
2772         cmd.options = 0;
2773
2774         if (!specific_ssid)
2775                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2776
2777         cmd.channel = (priv->channel & 0x7f);
2778         cmd.scan_type = SCAN_TYPE_ACTIVE;
2779         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2780                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2781
2782         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2783
2784         /* This must come after all hardware access to avoid being messed up
2785            by stuff happening in interrupt context after we leave STATE_DOWN */
2786         atmel_enter_state(priv, STATION_STATE_SCANNING);
2787 }
2788
2789 static void join(struct atmel_private *priv, int type)
2790 {
2791         struct {
2792                 u8 BSSID[6];
2793                 u8 SSID[MAX_SSID_LENGTH];
2794                 u8 BSS_type; /* this is a short in a scan command - weird */
2795                 u8 channel;
2796                 __le16 timeout;
2797                 u8 SSID_size;
2798                 u8 reserved;
2799         } cmd;
2800
2801         cmd.SSID_size = priv->SSID_size;
2802         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2803         memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2804         cmd.channel = (priv->channel & 0x7f);
2805         cmd.BSS_type = type;
2806         cmd.timeout = cpu_to_le16(2000);
2807
2808         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2809 }
2810
2811 static void start(struct atmel_private *priv, int type)
2812 {
2813         struct {
2814                 u8 BSSID[6];
2815                 u8 SSID[MAX_SSID_LENGTH];
2816                 u8 BSS_type;
2817                 u8 channel;
2818                 u8 SSID_size;
2819                 u8 reserved[3];
2820         } cmd;
2821
2822         cmd.SSID_size = priv->SSID_size;
2823         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2824         memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2825         cmd.BSS_type = type;
2826         cmd.channel = (priv->channel & 0x7f);
2827
2828         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2829 }
2830
2831 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2832                                 u8 channel)
2833 {
2834         int rejoin = 0;
2835         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2836                 SHORT_PREAMBLE : LONG_PREAMBLE;
2837
2838         if (priv->preamble != new) {
2839                 priv->preamble = new;
2840                 rejoin = 1;
2841                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2842         }
2843
2844         if (priv->channel != channel) {
2845                 priv->channel = channel;
2846                 rejoin = 1;
2847                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2848         }
2849
2850         if (rejoin) {
2851                 priv->station_is_associated = 0;
2852                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2853
2854                 if (priv->operating_mode == IW_MODE_INFRA)
2855                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2856                 else
2857                         join(priv, BSS_TYPE_AD_HOC);
2858         }
2859 }
2860
2861 static void send_authentication_request(struct atmel_private *priv, u16 system,
2862                                         u8 *challenge, int challenge_len)
2863 {
2864         struct ieee80211_hdr header;
2865         struct auth_body auth;
2866
2867         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2868         header.duration_id = cpu_to_le16(0x8000);
2869         header.seq_ctrl = 0;
2870         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2871         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2872         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2873
2874         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2875                 /* no WEP for authentication frames with TrSeqNo 1 */
2876                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2877
2878         auth.alg = cpu_to_le16(system);
2879
2880         auth.status = 0;
2881         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2882         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2883         priv->CurrentAuthentTransactionSeqNum += 2;
2884
2885         if (challenge_len != 0) {
2886                 auth.el_id = 16; /* challenge_text */
2887                 auth.chall_text_len = challenge_len;
2888                 memcpy(auth.chall_text, challenge, challenge_len);
2889                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2890         } else {
2891                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2892         }
2893 }
2894
2895 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2896 {
2897         u8 *ssid_el_p;
2898         int bodysize;
2899         struct ieee80211_hdr header;
2900         struct ass_req_format {
2901                 __le16 capability;
2902                 __le16 listen_interval;
2903                 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2904                 u8 ssid_el_id;
2905                 u8 ssid_len;
2906                 u8 ssid[MAX_SSID_LENGTH];
2907                 u8 sup_rates_el_id;
2908                 u8 sup_rates_len;
2909                 u8 rates[4];
2910         } body;
2911
2912         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2913                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2914         header.duration_id = cpu_to_le16(0x8000);
2915         header.seq_ctrl = 0;
2916
2917         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2918         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2919         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2920
2921         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2922         if (priv->wep_is_on)
2923                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2924         if (priv->preamble == SHORT_PREAMBLE)
2925                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2926
2927         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2928
2929         /* current AP address - only in reassoc frame */
2930         if (is_reassoc) {
2931                 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2932                 ssid_el_p = &body.ssid_el_id;
2933                 bodysize = 18 + priv->SSID_size;
2934         } else {
2935                 ssid_el_p = &body.ap[0];
2936                 bodysize = 12 + priv->SSID_size;
2937         }
2938
2939         ssid_el_p[0] = WLAN_EID_SSID;
2940         ssid_el_p[1] = priv->SSID_size;
2941         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2942         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2943         ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2944         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2945
2946         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2947 }
2948
2949 static int is_frame_from_current_bss(struct atmel_private *priv,
2950                                      struct ieee80211_hdr *header)
2951 {
2952         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2953                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2954         else
2955                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2956 }
2957
2958 static int retrieve_bss(struct atmel_private *priv)
2959 {
2960         int i;
2961         int max_rssi = -128;
2962         int max_index = -1;
2963
2964         if (priv->BSS_list_entries == 0)
2965                 return -1;
2966
2967         if (priv->connect_to_any_BSS) {
2968                 /* Select a BSS with the max-RSSI but of the same type and of
2969                    the same WEP mode and that it is not marked as 'bad' (i.e.
2970                    we had previously failed to connect to this BSS with the
2971                    settings that we currently use) */
2972                 priv->current_BSS = 0;
2973                 for (i = 0; i < priv->BSS_list_entries; i++) {
2974                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2975                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2976                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2977                             !(priv->BSSinfo[i].channel & 0x80)) {
2978                                 max_rssi = priv->BSSinfo[i].RSSI;
2979                                 priv->current_BSS = max_index = i;
2980                         }
2981                 }
2982                 return max_index;
2983         }
2984
2985         for (i = 0; i < priv->BSS_list_entries; i++) {
2986                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2987                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2988                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2989                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2990                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2991                                 max_rssi = priv->BSSinfo[i].RSSI;
2992                                 max_index = i;
2993                         }
2994                 }
2995         }
2996         return max_index;
2997 }
2998
2999 static void store_bss_info(struct atmel_private *priv,
3000                            struct ieee80211_hdr *header, u16 capability,
3001                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3002                            u8 *ssid, int is_beacon)
3003 {
3004         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3005         int i, index;
3006
3007         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3008                 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
3009                         index = i;
3010
3011         /* If we process a probe and an entry from this BSS exists
3012            we will update the BSS entry with the info from this BSS.
3013            If we process a beacon we will only update RSSI */
3014
3015         if (index == -1) {
3016                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3017                         return;
3018                 index = priv->BSS_list_entries++;
3019                 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
3020                 priv->BSSinfo[index].RSSI = rssi;
3021         } else {
3022                 if (rssi > priv->BSSinfo[index].RSSI)
3023                         priv->BSSinfo[index].RSSI = rssi;
3024                 if (is_beacon)
3025                         return;
3026         }
3027
3028         priv->BSSinfo[index].channel = channel;
3029         priv->BSSinfo[index].beacon_period = beacon_period;
3030         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3031         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3032         priv->BSSinfo[index].SSIDsize = ssid_len;
3033
3034         if (capability & WLAN_CAPABILITY_IBSS)
3035                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3036         else if (capability & WLAN_CAPABILITY_ESS)
3037                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3038
3039         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3040                 SHORT_PREAMBLE : LONG_PREAMBLE;
3041 }
3042
3043 static void authenticate(struct atmel_private *priv, u16 frame_len)
3044 {
3045         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3046         u16 status = le16_to_cpu(auth->status);
3047         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3048         u16 system = le16_to_cpu(auth->alg);
3049
3050         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3051                 /* no WEP */
3052                 if (priv->station_was_associated) {
3053                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3054                         send_association_request(priv, 1);
3055                         return;
3056                 } else {
3057                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3058                         send_association_request(priv, 0);
3059                         return;
3060                 }
3061         }
3062
3063         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3064                 int should_associate = 0;
3065                 /* WEP */
3066                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3067                         return;
3068
3069                 if (system == WLAN_AUTH_OPEN) {
3070                         if (trans_seq_no == 0x0002) {
3071                                 should_associate = 1;
3072                         }
3073                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3074                         if (trans_seq_no == 0x0002 &&
3075                             auth->el_id == WLAN_EID_CHALLENGE) {
3076                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3077                                 return;
3078                         } else if (trans_seq_no == 0x0004) {
3079                                 should_associate = 1;
3080                         }
3081                 }
3082
3083                 if (should_associate) {
3084                         if (priv->station_was_associated) {
3085                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3086                                 send_association_request(priv, 1);
3087                                 return;
3088                         } else {
3089                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3090                                 send_association_request(priv, 0);
3091                                 return;
3092                         }
3093                 }
3094         }
3095
3096         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3097                 /* Flip back and forth between WEP auth modes until the max
3098                  * authentication tries has been exceeded.
3099                  */
3100                 if (system == WLAN_AUTH_OPEN) {
3101                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3102                         priv->exclude_unencrypted = 1;
3103                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3104                         return;
3105                 } else if (system == WLAN_AUTH_SHARED_KEY
3106                            && priv->wep_is_on) {
3107                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3108                         priv->exclude_unencrypted = 0;
3109                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3110                         return;
3111                 } else if (priv->connect_to_any_BSS) {
3112                         int bss_index;
3113
3114                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3115
3116                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3117                                 atmel_join_bss(priv, bss_index);
3118                                 return;
3119                         }
3120                 }
3121         }
3122
3123         priv->AuthenticationRequestRetryCnt = 0;
3124         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3125         priv->station_is_associated = 0;
3126 }
3127
3128 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3129 {
3130         struct ass_resp_format {
3131                 __le16 capability;
3132                 __le16 status;
3133                 __le16 ass_id;
3134                 u8 el_id;
3135                 u8 length;
3136                 u8 rates[4];
3137         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3138
3139         u16 status = le16_to_cpu(ass_resp->status);
3140         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3141         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3142
3143         union iwreq_data wrqu;
3144
3145         if (frame_len < 8 + rates_len)
3146                 return;
3147
3148         if (status == WLAN_STATUS_SUCCESS) {
3149                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3150                         priv->AssociationRequestRetryCnt = 0;
3151                 else
3152                         priv->ReAssociationRequestRetryCnt = 0;
3153
3154                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3155                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3156                 atmel_set_mib(priv, Phy_Mib_Type,
3157                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3158                 if (priv->power_mode == 0) {
3159                         priv->listen_interval = 1;
3160                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3161                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3162                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3163                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3164                 } else {
3165                         priv->listen_interval = 2;
3166                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3167                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3168                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3169                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3170                 }
3171
3172                 priv->station_is_associated = 1;
3173                 priv->station_was_associated = 1;
3174                 atmel_enter_state(priv, STATION_STATE_READY);
3175
3176                 /* Send association event to userspace */
3177                 wrqu.data.length = 0;
3178                 wrqu.data.flags = 0;
3179                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3180                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3181                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3182
3183                 return;
3184         }
3185
3186         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3187             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3188             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3189             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3190                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3191                 priv->AssociationRequestRetryCnt++;
3192                 send_association_request(priv, 0);
3193                 return;
3194         }
3195
3196         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3197             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3198             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3199             priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3200                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3201                 priv->ReAssociationRequestRetryCnt++;
3202                 send_association_request(priv, 1);
3203                 return;
3204         }
3205
3206         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3207         priv->station_is_associated = 0;
3208
3209         if (priv->connect_to_any_BSS) {
3210                 int bss_index;
3211                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3212
3213                 if ((bss_index = retrieve_bss(priv)) != -1)
3214                         atmel_join_bss(priv, bss_index);
3215         }
3216 }
3217
3218 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3219 {
3220         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3221
3222         memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3223         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3224
3225         /* The WPA stuff cares about the current AP address */
3226         if (priv->use_wpa)
3227                 build_wpa_mib(priv);
3228
3229         /* When switching to AdHoc turn OFF Power Save if needed */
3230
3231         if (bss->BSStype == IW_MODE_ADHOC &&
3232             priv->operating_mode != IW_MODE_ADHOC &&
3233             priv->power_mode) {
3234                 priv->power_mode = 0;
3235                 priv->listen_interval = 1;
3236                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3237                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3238                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3239                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3240         }
3241
3242         priv->operating_mode = bss->BSStype;
3243         priv->channel = bss->channel & 0x7f;
3244         priv->beacon_period = bss->beacon_period;
3245
3246         if (priv->preamble != bss->preamble) {
3247                 priv->preamble = bss->preamble;
3248                 atmel_set_mib8(priv, Local_Mib_Type,
3249                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3250         }
3251
3252         if (!priv->wep_is_on && bss->UsingWEP) {
3253                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3254                 priv->station_is_associated = 0;
3255                 return;
3256         }
3257
3258         if (priv->wep_is_on && !bss->UsingWEP) {
3259                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3260                 priv->station_is_associated = 0;
3261                 return;
3262         }
3263
3264         atmel_enter_state(priv, STATION_STATE_JOINNING);
3265
3266         if (priv->operating_mode == IW_MODE_INFRA)
3267                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3268         else
3269                 join(priv, BSS_TYPE_AD_HOC);
3270 }
3271
3272 static void restart_search(struct atmel_private *priv)
3273 {
3274         int bss_index;
3275
3276         if (!priv->connect_to_any_BSS) {
3277                 atmel_scan(priv, 1);
3278         } else {
3279                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3280
3281                 if ((bss_index = retrieve_bss(priv)) != -1)
3282                         atmel_join_bss(priv, bss_index);
3283                 else
3284                         atmel_scan(priv, 0);
3285         }
3286 }
3287
3288 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3289 {
3290         u8 old = priv->wstats.qual.level;
3291         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3292
3293         switch (priv->firmware_type) {
3294         case ATMEL_FW_TYPE_502E:
3295                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3296                 break;
3297         default:
3298                 break;
3299         }
3300
3301         rssi = rssi * 100 / max_rssi;
3302         if ((rssi + old) % 2)
3303                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3304         else
3305                 priv->wstats.qual.level = (rssi + old) / 2;
3306         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3307         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3308 }
3309
3310 static void atmel_smooth_qual(struct atmel_private *priv)
3311 {
3312         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3313         while (time_diff--) {
3314                 priv->last_qual += HZ;
3315                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3316                 priv->wstats.qual.qual +=
3317                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3318                 priv->beacons_this_sec = 0;
3319         }
3320         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3321         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3322 }
3323
3324 /* deals with incoming management frames. */
3325 static void atmel_management_frame(struct atmel_private *priv,
3326                                    struct ieee80211_hdr *header,
3327                                    u16 frame_len, u8 rssi)
3328 {
3329         u16 subtype;
3330
3331         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3332         switch (subtype) {
3333         case IEEE80211_STYPE_BEACON:
3334         case IEEE80211_STYPE_PROBE_RESP:
3335
3336                 /* beacon frame has multiple variable-length fields -
3337                    never let an engineer loose with a data structure design. */
3338                 {
3339                         struct beacon_format {
3340                                 __le64 timestamp;
3341                                 __le16 interval;
3342                                 __le16 capability;
3343                                 u8 ssid_el_id;
3344                                 u8 ssid_length;
3345                                 /* ssid here */
3346                                 u8 rates_el_id;
3347                                 u8 rates_length;
3348                                 /* rates here */
3349                                 u8 ds_el_id;
3350                                 u8 ds_length;
3351                                 /* ds here */
3352                         } *beacon = (struct beacon_format *)priv->rx_buf;
3353
3354                         u8 channel, rates_length, ssid_length;
3355                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3356                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3357                         u16 capability = le16_to_cpu(beacon->capability);
3358                         u8 *beaconp = priv->rx_buf;
3359                         ssid_length = beacon->ssid_length;
3360                         /* this blows chunks. */
3361                         if (frame_len < 14 || frame_len < ssid_length + 15)
3362                                 return;
3363                         rates_length = beaconp[beacon->ssid_length + 15];
3364                         if (frame_len < ssid_length + rates_length + 18)
3365                                 return;
3366                         if (ssid_length >  MAX_SSID_LENGTH)
3367                                 return;
3368                         channel = beaconp[ssid_length + rates_length + 18];
3369
3370                         if (priv->station_state == STATION_STATE_READY) {
3371                                 smooth_rssi(priv, rssi);
3372                                 if (is_frame_from_current_bss(priv, header)) {
3373                                         priv->beacons_this_sec++;
3374                                         atmel_smooth_qual(priv);
3375                                         if (priv->last_beacon_timestamp) {
3376                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3377                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3378                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3379                                                 if (beacons > 1)
3380                                                         priv->wstats.miss.beacon += beacons - 1;
3381                                         }
3382                                         priv->last_beacon_timestamp = timestamp;
3383                                         handle_beacon_probe(priv, capability, channel);
3384                                 }
3385                         }
3386
3387                         if (priv->station_state == STATION_STATE_SCANNING)
3388                                 store_bss_info(priv, header, capability,
3389                                                beacon_interval, channel, rssi,
3390                                                ssid_length,
3391                                                &beacon->rates_el_id,
3392                                                subtype == IEEE80211_STYPE_BEACON);
3393                 }
3394                 break;
3395
3396         case IEEE80211_STYPE_AUTH:
3397
3398                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3399                         authenticate(priv, frame_len);
3400
3401                 break;
3402
3403         case IEEE80211_STYPE_ASSOC_RESP:
3404         case IEEE80211_STYPE_REASSOC_RESP:
3405
3406                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3407                     priv->station_state == STATION_STATE_REASSOCIATING)
3408                         associate(priv, frame_len, subtype);
3409
3410                 break;
3411
3412         case IEEE80211_STYPE_DISASSOC:
3413                 if (priv->station_is_associated &&
3414                     priv->operating_mode == IW_MODE_INFRA &&
3415                     is_frame_from_current_bss(priv, header)) {
3416                         priv->station_was_associated = 0;
3417                         priv->station_is_associated = 0;
3418
3419                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3420                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3421                 }
3422
3423                 break;
3424
3425         case IEEE80211_STYPE_DEAUTH:
3426                 if (priv->operating_mode == IW_MODE_INFRA &&
3427                     is_frame_from_current_bss(priv, header)) {
3428                         priv->station_was_associated = 0;
3429
3430                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3431                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3432                 }
3433
3434                 break;
3435         }
3436 }
3437
3438 /* run when timer expires */
3439 static void atmel_management_timer(u_long a)
3440 {
3441         struct net_device *dev = (struct net_device *) a;
3442         struct atmel_private *priv = netdev_priv(dev);
3443         unsigned long flags;
3444
3445         /* Check if the card has been yanked. */
3446         if (priv->card && priv->present_callback &&
3447                 !(*priv->present_callback)(priv->card))
3448                 return;
3449
3450         spin_lock_irqsave(&priv->irqlock, flags);
3451
3452         switch (priv->station_state) {
3453
3454         case STATION_STATE_AUTHENTICATING:
3455                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3456                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3457                         priv->station_is_associated = 0;
3458                         priv->AuthenticationRequestRetryCnt = 0;
3459                         restart_search(priv);
3460                 } else {
3461                         int auth = WLAN_AUTH_OPEN;
3462                         priv->AuthenticationRequestRetryCnt++;
3463                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3464                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3465                         if (priv->wep_is_on && priv->exclude_unencrypted)
3466                                 auth = WLAN_AUTH_SHARED_KEY;
3467                         send_authentication_request(priv, auth, NULL, 0);
3468           }
3469           break;
3470
3471         case STATION_STATE_ASSOCIATING:
3472                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3473                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3474                         priv->station_is_associated = 0;
3475                         priv->AssociationRequestRetryCnt = 0;
3476                         restart_search(priv);
3477                 } else {
3478                         priv->AssociationRequestRetryCnt++;
3479                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3480                         send_association_request(priv, 0);
3481                 }
3482           break;
3483
3484         case STATION_STATE_REASSOCIATING:
3485                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3486                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3487                         priv->station_is_associated = 0;
3488                         priv->ReAssociationRequestRetryCnt = 0;
3489                         restart_search(priv);
3490                 } else {
3491                         priv->ReAssociationRequestRetryCnt++;
3492                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3493                         send_association_request(priv, 1);
3494                 }
3495                 break;
3496
3497         default:
3498                 break;
3499         }
3500
3501         spin_unlock_irqrestore(&priv->irqlock, flags);
3502 }
3503
3504 static void atmel_command_irq(struct atmel_private *priv)
3505 {
3506         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3507         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3508         int fast_scan;
3509         union iwreq_data wrqu;
3510
3511         if (status == CMD_STATUS_IDLE ||
3512             status == CMD_STATUS_IN_PROGRESS)
3513                 return;
3514
3515         switch (command) {
3516         case CMD_Start:
3517                 if (status == CMD_STATUS_COMPLETE) {
3518                         priv->station_was_associated = priv->station_is_associated;
3519                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3520                                       (u8 *)priv->CurrentBSSID, 6);
3521                         atmel_enter_state(priv, STATION_STATE_READY);
3522                 }
3523                 break;
3524
3525         case CMD_Scan:
3526                 fast_scan = priv->fast_scan;
3527                 priv->fast_scan = 0;
3528
3529                 if (status != CMD_STATUS_COMPLETE) {
3530                         atmel_scan(priv, 1);
3531                 } else {
3532                         int bss_index = retrieve_bss(priv);
3533                         int notify_scan_complete = 1;
3534                         if (bss_index != -1) {
3535                                 atmel_join_bss(priv, bss_index);
3536                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3537                                    priv->SSID_size != 0) {
3538                                 start(priv, BSS_TYPE_AD_HOC);
3539                         } else {
3540                                 priv->fast_scan = !fast_scan;
3541                                 atmel_scan(priv, 1);
3542                                 notify_scan_complete = 0;
3543                         }
3544                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3545                         if (notify_scan_complete) {
3546                                 wrqu.data.length = 0;
3547                                 wrqu.data.flags = 0;
3548                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3549                         }
3550                 }
3551                 break;
3552
3553         case CMD_SiteSurvey:
3554                 priv->fast_scan = 0;
3555
3556                 if (status != CMD_STATUS_COMPLETE)
3557                         return;
3558
3559                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3560                 if (priv->station_is_associated) {
3561                         atmel_enter_state(priv, STATION_STATE_READY);
3562                         wrqu.data.length = 0;
3563                         wrqu.data.flags = 0;
3564                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3565                 } else {
3566                         atmel_scan(priv, 1);
3567                 }
3568                 break;
3569
3570         case CMD_Join:
3571                 if (status == CMD_STATUS_COMPLETE) {
3572                         if (priv->operating_mode == IW_MODE_ADHOC) {
3573                                 priv->station_was_associated = priv->station_is_associated;
3574                                 atmel_enter_state(priv, STATION_STATE_READY);
3575                         } else {
3576                                 int auth = WLAN_AUTH_OPEN;
3577                                 priv->AuthenticationRequestRetryCnt = 0;
3578                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3579
3580                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3581                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3582                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3583                                         auth = WLAN_AUTH_SHARED_KEY;
3584                                 send_authentication_request(priv, auth, NULL, 0);
3585                         }
3586                         return;
3587                 }
3588
3589                 atmel_scan(priv, 1);
3590         }
3591 }
3592
3593 static int atmel_wakeup_firmware(struct atmel_private *priv)
3594 {
3595         struct host_info_struct *iface = &priv->host_info;
3596         u16 mr1, mr3;
3597         int i;
3598
3599         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3600                 atmel_set_gcr(priv->dev, GCR_REMAP);
3601
3602         /* wake up on-board processor */
3603         atmel_clear_gcr(priv->dev, 0x0040);
3604         atmel_write16(priv->dev, BSR, BSS_SRAM);
3605
3606         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3607                 mdelay(100);
3608
3609         /* and wait for it */
3610         for (i = LOOP_RETRY_LIMIT; i; i--) {
3611                 mr1 = atmel_read16(priv->dev, MR1);
3612                 mr3 = atmel_read16(priv->dev, MR3);
3613
3614                 if (mr3 & MAC_BOOT_COMPLETE)
3615                         break;
3616                 if (mr1 & MAC_BOOT_COMPLETE &&
3617                     priv->bus_type == BUS_TYPE_PCCARD)
3618                         break;
3619         }
3620
3621         if (i == 0) {
3622                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3623                 return -EIO;
3624         }
3625
3626         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3627                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3628                 return -ENODEV;
3629         }
3630
3631         /* now check for completion of MAC initialization through
3632            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3633            MAC initialization, check completion status, set interrupt mask,
3634            enables interrupts and calls Tx and Rx initialization functions */
3635
3636         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3637
3638         for (i = LOOP_RETRY_LIMIT; i; i--) {
3639                 mr1 = atmel_read16(priv->dev, MR1);
3640                 mr3 = atmel_read16(priv->dev, MR3);
3641
3642                 if (mr3 & MAC_INIT_COMPLETE)
3643                         break;
3644                 if (mr1 & MAC_INIT_COMPLETE &&
3645                     priv->bus_type == BUS_TYPE_PCCARD)
3646                         break;
3647         }
3648
3649         if (i == 0) {
3650                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3651                                 priv->dev->name);
3652                 return -EIO;
3653         }
3654
3655         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3656         if ((mr3 & MAC_INIT_COMPLETE) &&
3657             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3658                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3659                 return -EIO;
3660         }
3661         if ((mr1 & MAC_INIT_COMPLETE) &&
3662             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3663                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3664                 return -EIO;
3665         }
3666
3667         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3668                            priv->host_info_base, sizeof(*iface));
3669
3670         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3671         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3672         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3673         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3674         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3675         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3676         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3677         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3678         iface->build_version = le16_to_cpu(iface->build_version);
3679         iface->command_pos = le16_to_cpu(iface->command_pos);
3680         iface->major_version = le16_to_cpu(iface->major_version);
3681         iface->minor_version = le16_to_cpu(iface->minor_version);
3682         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3683         iface->mac_status = le16_to_cpu(iface->mac_status);
3684
3685         return 0;
3686 }
3687
3688 /* determine type of memory and MAC address */
3689 static int probe_atmel_card(struct net_device *dev)
3690 {
3691         int rc = 0;
3692         struct atmel_private *priv = netdev_priv(dev);
3693
3694         /* reset pccard */
3695         if (priv->bus_type == BUS_TYPE_PCCARD)
3696                 atmel_write16(dev, GCR, 0x0060);
3697
3698         atmel_write16(dev, GCR, 0x0040);
3699         mdelay(500);
3700
3701         if (atmel_read16(dev, MR2) == 0) {
3702                 /* No stored firmware so load a small stub which just
3703                    tells us the MAC address */
3704                 int i;
3705                 priv->card_type = CARD_TYPE_EEPROM;
3706                 atmel_write16(dev, BSR, BSS_IRAM);
3707                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3708                 atmel_set_gcr(dev, GCR_REMAP);
3709                 atmel_clear_gcr(priv->dev, 0x0040);
3710                 atmel_write16(dev, BSR, BSS_SRAM);
3711                 for (i = LOOP_RETRY_LIMIT; i; i--)
3712                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3713                                 break;
3714                 if (i == 0) {
3715                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3716                 } else {
3717                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3718                         /* got address, now squash it again until the network
3719                            interface is opened */
3720                         if (priv->bus_type == BUS_TYPE_PCCARD)
3721                                 atmel_write16(dev, GCR, 0x0060);
3722                         atmel_write16(dev, GCR, 0x0040);
3723                         rc = 1;
3724                 }
3725         } else if (atmel_read16(dev, MR4) == 0) {
3726                 /* Mac address easy in this case. */
3727                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3728                 atmel_write16(dev,  BSR, 1);
3729                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3730                 atmel_write16(dev,  BSR, 0x200);
3731                 rc = 1;
3732         } else {
3733                 /* Standard firmware in flash, boot it up and ask
3734                    for the Mac Address */
3735                 priv->card_type = CARD_TYPE_SPI_FLASH;
3736                 if (atmel_wakeup_firmware(priv) == 0) {
3737                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3738
3739                         /* got address, now squash it again until the network
3740                            interface is opened */
3741                         if (priv->bus_type == BUS_TYPE_PCCARD)
3742                                 atmel_write16(dev, GCR, 0x0060);
3743                         atmel_write16(dev, GCR, 0x0040);
3744                         rc = 1;
3745                 }
3746         }
3747
3748         if (rc) {
3749                 if (dev->dev_addr[0] == 0xFF) {
3750                         static const u8 default_mac[] = {
3751                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3752                         };
3753                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3754                         memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3755                 }
3756         }
3757
3758         return rc;
3759 }
3760
3761 /* Move the encyption information on the MIB structure.
3762    This routine is for the pre-WPA firmware: later firmware has
3763    a different format MIB and a different routine. */
3764 static void build_wep_mib(struct atmel_private *priv)
3765 {
3766         struct { /* NB this is matched to the hardware, don't change. */
3767                 u8 wep_is_on;
3768                 u8 default_key; /* 0..3 */
3769                 u8 reserved;
3770                 u8 exclude_unencrypted;
3771
3772                 u32 WEPICV_error_count;
3773                 u32 WEP_excluded_count;
3774
3775                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3776                 u8 encryption_level; /* 0, 1, 2 */
3777                 u8 reserved2[3];
3778         } mib;
3779         int i;
3780
3781         mib.wep_is_on = priv->wep_is_on;
3782         if (priv->wep_is_on) {
3783                 if (priv->wep_key_len[priv->default_key] > 5)
3784                         mib.encryption_level = 2;
3785                 else
3786                         mib.encryption_level = 1;
3787         } else {
3788                 mib.encryption_level = 0;
3789         }
3790
3791         mib.default_key = priv->default_key;
3792         mib.exclude_unencrypted = priv->exclude_unencrypted;
3793
3794         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3795                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3796
3797         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3798 }
3799
3800 static void build_wpa_mib(struct atmel_private *priv)
3801 {
3802         /* This is for the later (WPA enabled) firmware. */
3803
3804         struct { /* NB this is matched to the hardware, don't change. */
3805                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3806                 u8 receiver_address[ETH_ALEN];
3807                 u8 wep_is_on;
3808                 u8 default_key; /* 0..3 */
3809                 u8 group_key;
3810                 u8 exclude_unencrypted;
3811                 u8 encryption_type;
3812                 u8 reserved;
3813
3814                 u32 WEPICV_error_count;
3815                 u32 WEP_excluded_count;
3816
3817                 u8 key_RSC[4][8];
3818         } mib;
3819
3820         int i;
3821
3822         mib.wep_is_on = priv->wep_is_on;
3823         mib.exclude_unencrypted = priv->exclude_unencrypted;
3824         memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3825
3826         /* zero all the keys before adding in valid ones. */
3827         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3828
3829         if (priv->wep_is_on) {
3830                 /* There's a comment in the Atmel code to the effect that this
3831                    is only valid when still using WEP, it may need to be set to
3832                    something to use WPA */
3833                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3834
3835                 mib.default_key = mib.group_key = 255;
3836                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3837                         if (priv->wep_key_len[i] > 0) {
3838                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3839                                 if (i == priv->default_key) {
3840                                         mib.default_key = i;
3841                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3842                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3843                                 } else {
3844                                         mib.group_key = i;
3845                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3846                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3847                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3848                                 }
3849                         }
3850                 }
3851                 if (mib.default_key == 255)
3852                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3853                 if (mib.group_key == 255)
3854                         mib.group_key = mib.default_key;
3855
3856         }
3857
3858         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3859 }
3860
3861 static int reset_atmel_card(struct net_device *dev)
3862 {
3863         /* do everything necessary to wake up the hardware, including
3864            waiting for the lightning strike and throwing the knife switch....
3865
3866            set all the Mib values which matter in the card to match
3867            their settings in the atmel_private structure. Some of these
3868            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3869            can only be changed by tearing down the world and coming back through
3870            here.
3871
3872            This routine is also responsible for initialising some
3873            hardware-specific fields in the atmel_private structure,
3874            including a copy of the firmware's hostinfo structure
3875            which is the route into the rest of the firmware datastructures. */
3876
3877         struct atmel_private *priv = netdev_priv(dev);
3878         u8 configuration;
3879         int old_state = priv->station_state;
3880         int err = 0;
3881
3882         /* data to add to the firmware names, in priority order
3883            this implemenents firmware versioning */
3884
3885         static char *firmware_modifier[] = {
3886                 "-wpa",
3887                 "",
3888                 NULL
3889         };
3890
3891         /* reset pccard */
3892         if (priv->bus_type == BUS_TYPE_PCCARD)
3893                 atmel_write16(priv->dev, GCR, 0x0060);
3894
3895         /* stop card , disable interrupts */
3896         atmel_write16(priv->dev, GCR, 0x0040);
3897
3898         if (priv->card_type == CARD_TYPE_EEPROM) {
3899                 /* copy in firmware if needed */
3900                 const struct firmware *fw_entry = NULL;
3901                 const unsigned char *fw;
3902                 int len = priv->firmware_length;
3903                 if (!(fw = priv->firmware)) {
3904                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3905                                 if (strlen(priv->firmware_id) == 0) {
3906                                         printk(KERN_INFO
3907                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3908                                                dev->name);
3909                                         printk(KERN_INFO
3910                                                "%s: if not, use the firmware= module parameter.\n",
3911                                                dev->name);
3912                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3913                                 }
3914                                 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3915                                 if (err != 0) {
3916                                         printk(KERN_ALERT
3917                                                "%s: firmware %s is missing, cannot continue.\n",
3918                                                dev->name, priv->firmware_id);
3919                                         return err;
3920                                 }
3921                         } else {
3922                                 int fw_index = 0;
3923                                 int success = 0;
3924
3925                                 /* get firmware filename entry based on firmware type ID */
3926                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3927                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3928                                         fw_index++;
3929
3930                                 /* construct the actual firmware file name */
3931                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3932                                         int i;
3933                                         for (i = 0; firmware_modifier[i]; i++) {
3934                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3935                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3936                                                 priv->firmware_id[31] = '\0';
3937                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3938                                                         success = 1;
3939                                                         break;
3940                                                 }
3941                                         }
3942                                 }
3943                                 if (!success) {
3944                                         printk(KERN_ALERT
3945                                                "%s: firmware %s is missing, cannot start.\n",
3946                                                dev->name, priv->firmware_id);
3947                                         priv->firmware_id[0] = '\0';
3948                                         return -ENOENT;
3949                                 }
3950                         }
3951
3952                         fw = fw_entry->data;
3953                         len = fw_entry->size;
3954                 }
3955
3956                 if (len <= 0x6000) {
3957                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3958                         atmel_copy_to_card(priv->dev, 0, fw, len);
3959                         atmel_set_gcr(priv->dev, GCR_REMAP);
3960                 } else {
3961                         /* Remap */
3962                         atmel_set_gcr(priv->dev, GCR_REMAP);
3963                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3964                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3965                         atmel_write16(priv->dev, BSR, 0x2ff);
3966                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3967                 }
3968
3969                 release_firmware(fw_entry);
3970         }
3971
3972         err = atmel_wakeup_firmware(priv);
3973         if (err != 0)
3974                 return err;
3975
3976         /* Check the version and set the correct flag for wpa stuff,
3977            old and new firmware is incompatible.
3978            The pre-wpa 3com firmware reports major version 5,
3979            the wpa 3com firmware is major version 4 and doesn't need
3980            the 3com broken-ness filter. */
3981         priv->use_wpa = (priv->host_info.major_version == 4);
3982         priv->radio_on_broken = (priv->host_info.major_version == 5);
3983
3984         /* unmask all irq sources */
3985         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3986
3987         /* int Tx system and enable Tx */
3988         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3989         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3990         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3991         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3992
3993         priv->tx_desc_free = priv->host_info.tx_desc_count;
3994         priv->tx_desc_head = 0;
3995         priv->tx_desc_tail = 0;
3996         priv->tx_desc_previous = 0;
3997         priv->tx_free_mem = priv->host_info.tx_buff_size;
3998         priv->tx_buff_head = 0;
3999         priv->tx_buff_tail = 0;
4000
4001         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4002         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4003                                    configuration | FUNC_CTRL_TxENABLE);
4004
4005         /* init Rx system and enable */
4006         priv->rx_desc_head = 0;
4007
4008         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4009         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4010                                    configuration | FUNC_CTRL_RxENABLE);
4011
4012         if (!priv->radio_on_broken) {
4013                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4014                     CMD_STATUS_REJECTED_RADIO_OFF) {
4015                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
4016                                dev->name);
4017                         return -EIO;
4018                 }
4019         }
4020
4021         /* set up enough MIB values to run. */
4022         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4023         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4024         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4025         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4026         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4027         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4028         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4029         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4030                       priv->dev->dev_addr, 6);
4031         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4032         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4033         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4034         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4035         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4036         if (priv->use_wpa)
4037                 build_wpa_mib(priv);
4038         else
4039                 build_wep_mib(priv);
4040
4041         if (old_state == STATION_STATE_READY) {
4042                 union iwreq_data wrqu;
4043
4044                 wrqu.data.length = 0;
4045                 wrqu.data.flags = 0;
4046                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4047                 eth_zero_addr(wrqu.ap_addr.sa_data);
4048                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4049         }
4050
4051         return 0;
4052 }
4053
4054 static void atmel_send_command(struct atmel_private *priv, int command,
4055                                void *cmd, int cmd_size)
4056 {
4057         if (cmd)
4058                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4059                                    cmd, cmd_size);
4060
4061         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4062         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4063 }
4064
4065 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4066                                    void *cmd, int cmd_size)
4067 {
4068         int i, status;
4069
4070         atmel_send_command(priv, command, cmd, cmd_size);
4071
4072         for (i = 5000; i; i--) {
4073                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4074                 if (status != CMD_STATUS_IDLE &&
4075                     status != CMD_STATUS_IN_PROGRESS)
4076                         break;
4077                 udelay(20);
4078         }
4079
4080         if (i == 0) {
4081                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4082                 status =  CMD_STATUS_HOST_ERROR;
4083         } else {
4084                 if (command != CMD_EnableRadio)
4085                         status = CMD_STATUS_COMPLETE;
4086         }
4087
4088         return status;
4089 }
4090
4091 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4092 {
4093         struct get_set_mib m;
4094         m.type = type;
4095         m.size = 1;
4096         m.index = index;
4097
4098         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4099         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4100 }
4101
4102 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4103 {
4104         struct get_set_mib m;
4105         m.type = type;
4106         m.size = 1;
4107         m.index = index;
4108         m.data[0] = data;
4109
4110         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4111 }
4112
4113 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4114                             u16 data)
4115 {
4116         struct get_set_mib m;
4117         m.type = type;
4118         m.size = 2;
4119         m.index = index;
4120         m.data[0] = data;
4121         m.data[1] = data >> 8;
4122
4123         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4124 }
4125
4126 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4127                           u8 *data, int data_len)
4128 {
4129         struct get_set_mib m;
4130         m.type = type;
4131         m.size = data_len;
4132         m.index = index;
4133
4134         if (data_len > MIB_MAX_DATA_BYTES)
4135                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4136
4137         memcpy(m.data, data, data_len);
4138         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4139 }
4140
4141 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4142                           u8 *data, int data_len)
4143 {
4144         struct get_set_mib m;
4145         m.type = type;
4146         m.size = data_len;
4147         m.index = index;
4148
4149         if (data_len > MIB_MAX_DATA_BYTES)
4150                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4151
4152         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4153         atmel_copy_to_host(priv->dev, data,
4154                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4155 }
4156
4157 static void atmel_writeAR(struct net_device *dev, u16 data)
4158 {
4159         int i;
4160         outw(data, dev->base_addr + AR);
4161         /* Address register appears to need some convincing..... */
4162         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4163                 outw(data, dev->base_addr + AR);
4164 }
4165
4166 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4167                                const unsigned char *src, u16 len)
4168 {
4169         int i;
4170         atmel_writeAR(dev, dest);
4171         if (dest % 2) {
4172                 atmel_write8(dev, DR, *src);
4173                 src++; len--;
4174         }
4175         for (i = len; i > 1 ; i -= 2) {
4176                 u8 lb = *src++;
4177                 u8 hb = *src++;
4178                 atmel_write16(dev, DR, lb | (hb << 8));
4179         }
4180         if (i)
4181                 atmel_write8(dev, DR, *src);
4182 }
4183
4184 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4185                                u16 src, u16 len)
4186 {
4187         int i;
4188         atmel_writeAR(dev, src);
4189         if (src % 2) {
4190                 *dest = atmel_read8(dev, DR);
4191                 dest++; len--;
4192         }
4193         for (i = len; i > 1 ; i -= 2) {
4194                 u16 hw = atmel_read16(dev, DR);
4195                 *dest++ = hw;
4196                 *dest++ = hw >> 8;
4197         }
4198         if (i)
4199                 *dest = atmel_read8(dev, DR);
4200 }
4201
4202 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4203 {
4204         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4205 }
4206
4207 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4208 {
4209         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4210 }
4211
4212 static int atmel_lock_mac(struct atmel_private *priv)
4213 {
4214         int i, j = 20;
4215  retry:
4216         for (i = 5000; i; i--) {
4217                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4218                         break;
4219                 udelay(20);
4220         }
4221
4222         if (!i)
4223                 return 0; /* timed out */
4224
4225         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4226         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4227                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4228                 if (!j--)
4229                         return 0; /* timed out */
4230                 goto retry;
4231         }
4232
4233         return 1;
4234 }
4235
4236 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4237 {
4238         atmel_writeAR(priv->dev, pos);
4239         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4240         atmel_write16(priv->dev, DR, data >> 16);
4241 }
4242
4243 /***************************************************************************/
4244 /* There follows the source form of the MAC address reading firmware       */
4245 /***************************************************************************/
4246 #if 0
4247
4248 /* Copyright 2003 Matthew T. Russotto                                      */
4249 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4250 /* included in "atmel wireless lan drivers" package                        */
4251 /**
4252     This file is part of net.russotto.AtmelMACFW, hereto referred to
4253     as AtmelMACFW
4254
4255     AtmelMACFW is free software; you can redistribute it and/or modify
4256     it under the terms of the GNU General Public License version 2
4257     as published by the Free Software Foundation.
4258
4259     AtmelMACFW is distributed in the hope that it will be useful,
4260     but WITHOUT ANY WARRANTY; without even the implied warranty of
4261     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4262     GNU General Public License for more details.
4263
4264     You should have received a copy of the GNU General Public License
4265     along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4266
4267 ****************************************************************************/
4268 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4269 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4270 /* It only works on SPI EEPROM versions of the card.                       */
4271
4272 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4273 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4274 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4275 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4276 /* MR4, for investigational purposes (maybe we can determine chip type     */
4277 /* from that?)                                                             */
4278
4279         .org 0
4280     .set MRBASE, 0x8000000
4281         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4282         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4283         .set SRAM_BASE,  0x02000000
4284         .set SP_BASE,    0x0F300000
4285         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4286         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4287         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4288         .set STACK_BASE, 0x5600
4289         .set SP_SR, 0x10
4290         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4291         .set SP_RDRF, 1 /* status register bit -- RDR full */
4292         .set SP_SWRST, 0x80
4293         .set SP_SPIEN, 0x1
4294         .set SP_CR, 0   /* control register */
4295         .set SP_MR, 4   /* mode register */
4296         .set SP_RDR, 0x08 /* Read Data Register */
4297         .set SP_TDR, 0x0C /* Transmit Data Register */
4298         .set SP_CSR0, 0x30 /* chip select registers */
4299         .set SP_CSR1, 0x34
4300         .set SP_CSR2, 0x38
4301         .set SP_CSR3, 0x3C
4302         .set NVRAM_CMD_RDSR, 5 /* read status register */
4303         .set NVRAM_CMD_READ, 3 /* read data */
4304         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4305         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4306                                   serial output, since SO is normally high.  But it
4307                                   does cause 8 clock cycles and thus 8 bits to be
4308                                   clocked in to the chip.  See Atmel's SPI
4309                                   controller (e.g. AT91M55800) timing and 4K
4310                                   SPI EEPROM manuals */
4311
4312         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4313         .set NVRAM_IMAGE, 0x02000200
4314         .set NVRAM_LENGTH, 0x0200
4315         .set MAC_ADDRESS_MIB, SRAM_BASE
4316         .set MAC_ADDRESS_LENGTH, 6
4317         .set MAC_BOOT_FLAG, 0x10
4318         .set MR1, 0
4319         .set MR2, 4
4320         .set MR3, 8
4321         .set MR4, 0xC
4322 RESET_VECTOR:
4323         b RESET_HANDLER
4324 UNDEF_VECTOR:
4325         b HALT1
4326 SWI_VECTOR:
4327         b HALT1
4328 IABORT_VECTOR:
4329         b HALT1
4330 DABORT_VECTOR:
4331 RESERVED_VECTOR:
4332         b HALT1
4333 IRQ_VECTOR:
4334         b HALT1
4335 FIQ_VECTOR:
4336         b HALT1
4337 HALT1:  b HALT1
4338 RESET_HANDLER:
4339         mov     r0, #CPSR_INITIAL
4340         msr     CPSR_c, r0      /* This is probably unnecessary */
4341
4342 /* I'm guessing this is initializing clock generator electronics for SPI */
4343         ldr     r0, =SPI_CGEN_BASE
4344         mov     r1, #0
4345         mov     r1, r1, lsl #3
4346         orr     r1, r1, #0
4347         str     r1, [r0]
4348         ldr     r1, [r0, #28]
4349         bic     r1, r1, #16
4350         str     r1, [r0, #28]
4351         mov     r1, #1
4352         str     r1, [r0, #8]
4353
4354         ldr     r0, =MRBASE
4355         mov     r1, #0
4356         strh    r1, [r0, #MR1]
4357         strh    r1, [r0, #MR2]
4358         strh    r1, [r0, #MR3]
4359         strh    r1, [r0, #MR4]
4360
4361         mov     sp, #STACK_BASE
4362         bl      SP_INIT
4363         mov     r0, #10
4364         bl      DELAY9
4365         bl      GET_MAC_ADDR
4366         bl      GET_WHOLE_NVRAM
4367         ldr     r0, =MRBASE
4368         ldr     r1, =MAC_ADDRESS_MIB
4369         strh    r1, [r0, #MR2]
4370         ldr     r1, =NVRAM_IMAGE
4371         strh    r1, [r0, #MR4]
4372         mov     r1, #MAC_BOOT_FLAG
4373         strh    r1, [r0, #MR3]
4374 HALT2:  b HALT2
4375 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4376 GET_WHOLE_NVRAM:
4377         stmdb   sp!, {lr}
4378         mov     r2, #0 /* 0th bytes of NVRAM */
4379         mov     r3, #NVRAM_LENGTH
4380         mov     r1, #0          /* not used in routine */
4381         ldr     r0, =NVRAM_IMAGE
4382         bl      NVRAM_XFER
4383         ldmia   sp!, {lr}
4384         bx      lr
4385 .endfunc
4386
4387 .func Get_MAC_Addr, GET_MAC_ADDR
4388 GET_MAC_ADDR:
4389         stmdb   sp!, {lr}
4390         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4391         mov     r3, #MAC_ADDRESS_LENGTH
4392         mov     r1, #0          /* not used in routine */
4393         ldr     r0, =MAC_ADDRESS_MIB
4394         bl      NVRAM_XFER
4395         ldmia   sp!, {lr}
4396         bx      lr
4397 .endfunc
4398 .ltorg
4399 .func Delay9, DELAY9
4400 DELAY9:
4401         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4402 DELAYLOOP:
4403         beq     DELAY9_done
4404         subs    r0, r0, #1
4405         b       DELAYLOOP
4406 DELAY9_done:
4407         bx      lr
4408 .endfunc
4409
4410 .func SP_Init, SP_INIT
4411 SP_INIT:
4412         mov     r1, #SP_SWRST
4413         ldr     r0, =SP_BASE
4414         str     r1, [r0, #SP_CR] /* reset the SPI */
4415         mov     r1, #0
4416         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4417         mov     r1, #SP_SPIEN
4418         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4419         str     r1, [r0, #SP_CR] /* enable the SPI */
4420
4421 /*  My guess would be this turns on the SPI clock */
4422         ldr     r3, =SPI_CGEN_BASE
4423         ldr     r1, [r3, #28]
4424         orr     r1, r1, #0x2000
4425         str     r1, [r3, #28]
4426
4427         ldr     r1, =0x2000c01
4428         str     r1, [r0, #SP_CSR0]
4429         ldr     r1, =0x2000201
4430         str     r1, [r0, #SP_CSR1]
4431         str     r1, [r0, #SP_CSR2]
4432         str     r1, [r0, #SP_CSR3]
4433         ldr     r1, [r0, #SP_SR]
4434         ldr     r0, [r0, #SP_RDR]
4435         bx      lr
4436 .endfunc
4437 .func NVRAM_Init, NVRAM_INIT
4438 NVRAM_INIT:
4439         ldr     r1, =SP_BASE
4440         ldr     r0, [r1, #SP_RDR]
4441         mov     r0, #NVRAM_CMD_RDSR
4442         str     r0, [r1, #SP_TDR]
4443 SP_loop1:
4444         ldr     r0, [r1, #SP_SR]
4445         tst     r0, #SP_TDRE
4446         beq     SP_loop1
4447
4448         mov     r0, #SPI_8CLOCKS
4449         str     r0, [r1, #SP_TDR]
4450 SP_loop2:
4451         ldr     r0, [r1, #SP_SR]
4452         tst     r0, #SP_TDRE
4453         beq     SP_loop2
4454
4455         ldr     r0, [r1, #SP_RDR]
4456 SP_loop3:
4457         ldr     r0, [r1, #SP_SR]
4458         tst     r0, #SP_RDRF
4459         beq     SP_loop3
4460
4461         ldr     r0, [r1, #SP_RDR]
4462         and     r0, r0, #255
4463         bx      lr
4464 .endfunc
4465
4466 .func NVRAM_Xfer, NVRAM_XFER
4467         /* r0 = dest address */
4468         /* r1 = not used */
4469         /* r2 = src address within NVRAM */
4470         /* r3 = length */
4471 NVRAM_XFER:
4472         stmdb   sp!, {r4, r5, lr}
4473         mov     r5, r0          /* save r0 (dest address) */
4474         mov     r4, r3          /* save r3 (length) */
4475         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4476         and     r0, r0, #8
4477         add     r0, r0, #NVRAM_CMD_READ
4478         ldr     r1, =NVRAM_SCRATCH
4479         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4480         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4481 _local1:
4482         bl      NVRAM_INIT
4483         tst     r0, #NVRAM_SR_RDY
4484         bne     _local1
4485         mov     r0, #20
4486         bl      DELAY9
4487         mov     r2, r4          /* length */
4488         mov     r1, r5          /* dest address */
4489         mov     r0, #2          /* bytes to transfer in command */
4490         bl      NVRAM_XFER2
4491         ldmia   sp!, {r4, r5, lr}
4492         bx      lr
4493 .endfunc
4494
4495 .func NVRAM_Xfer2, NVRAM_XFER2
4496 NVRAM_XFER2:
4497         stmdb   sp!, {r4, r5, r6, lr}
4498         ldr     r4, =SP_BASE
4499         mov     r3, #0
4500         cmp     r0, #0
4501         bls     _local2
4502         ldr     r5, =NVRAM_SCRATCH
4503 _local4:
4504         ldrb    r6, [r5, r3]
4505         str     r6, [r4, #SP_TDR]
4506 _local3:
4507         ldr     r6, [r4, #SP_SR]
4508         tst     r6, #SP_TDRE
4509         beq     _local3
4510         add     r3, r3, #1
4511         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4512         blo     _local4
4513 _local2:
4514         mov     r3, #SPI_8CLOCKS
4515         str     r3, [r4, #SP_TDR]
4516         ldr     r0, [r4, #SP_RDR]
4517 _local5:
4518         ldr     r0, [r4, #SP_SR]
4519         tst     r0, #SP_RDRF
4520         beq     _local5
4521         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 */
4522         mov     r0, #0
4523         cmp     r2, #0  /* r2 is # of bytes to copy in */
4524         bls     _local6
4525 _local7:
4526         ldr     r5, [r4, #SP_SR]
4527         tst     r5, #SP_TDRE
4528         beq     _local7
4529         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4530 _local8:
4531         ldr     r5, [r4, #SP_SR]
4532         tst     r5, #SP_RDRF
4533         beq     _local8
4534         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4535         strb    r5, [r1], #1 /* postindexed */
4536         add     r0, r0, #1
4537         cmp     r0, r2
4538         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4539 _local6:
4540         mov     r0, #200
4541         bl      DELAY9
4542         ldmia   sp!, {r4, r5, r6, lr}
4543         bx      lr
4544 #endif