drivers/net/wireless/atmel.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003-2004 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12     extensions, (C) Jean Tourrilhes.
  13
  14     The firmware module for reading the MAC address of the card comes from
  15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17     This file contains the module in binary form and, under the terms
  18     of the GPL, in source form. The source is located at the end of the file.
  19
  20     This program is free software; you can redistribute it and/or modify
  21     it under the terms of the GNU General Public License as published by
  22     the Free Software Foundation; either version 2 of the License, or
  23     (at your option) any later version.
  24
  25     This software is distributed in the hope that it will be useful,
  26     but WITHOUT ANY WARRANTY; without even the implied warranty of
  27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28     GNU General Public License for more details.
  29
  30     You should have received a copy of the GNU General Public License
  31     along with Atmel wireless lan drivers; if not, write to the Free Software
  32     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  36
  37     Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
  38     hardware used during development of this driver.
  39
  40 ******************************************************************************/
  41
  42 #include <linux/init.h>
  43
  44 #include <linux/kernel.h>
  45 #include <linux/ptrace.h>
  46 #include <linux/slab.h>
  47 #include <linux/string.h>
  48 #include <linux/ctype.h>
  49 #include <linux/timer.h>
  50 #include <asm/byteorder.h>
  51 #include <asm/io.h>
  52 #include <asm/system.h>
  53 #include <asm/uaccess.h>
  54 #include <linux/module.h>
  55 #include <linux/netdevice.h>
  56 #include <linux/etherdevice.h>
  57 #include <linux/skbuff.h>
  58 #include <linux/if_arp.h>
  59 #include <linux/ioport.h>
  60 #include <linux/fcntl.h>
  61 #include <linux/delay.h>
  62 #include <linux/wireless.h>
  63 #include <net/iw_handler.h>
  64 #include <linux/crc32.h>
  65 #include <linux/proc_fs.h>
  66 #include <linux/device.h>
  67 #include <linux/moduleparam.h>
  68 #include <linux/firmware.h>
  69 #include <linux/jiffies.h>
  70 #include <linux/ieee80211.h>
  71 #include "atmel.h"
  72
  73 #define DRIVER_MAJOR 0
  74 #define DRIVER_MINOR 98
  75
  76 MODULE_AUTHOR("Simon Kelley");
  77 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  78 MODULE_LICENSE("GPL");
  79 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  80
  81 /* The name of the firmware file to be loaded
  82    over-rides any automatic selection */
  83 static char *firmware = NULL;
  84 module_param(firmware, charp, 0);
  85
  86 /* table of firmware file names */
  87 static struct {
  88         AtmelFWType fw_type;
  89         const char *fw_file;
  90         const char *fw_file_ext;
  91 } fw_table[] = {
  92         { ATMEL_FW_TYPE_502,            "atmel_at76c502",       "bin" },
  93         { ATMEL_FW_TYPE_502D,           "atmel_at76c502d",      "bin" },
  94         { ATMEL_FW_TYPE_502E,           "atmel_at76c502e",      "bin" },
  95         { ATMEL_FW_TYPE_502_3COM,       "atmel_at76c502_3com",  "bin" },
  96         { ATMEL_FW_TYPE_504,            "atmel_at76c504",       "bin" },
  97         { ATMEL_FW_TYPE_504_2958,       "atmel_at76c504_2958",  "bin" },
  98         { ATMEL_FW_TYPE_504A_2958,      "atmel_at76c504a_2958", "bin" },
  99         { ATMEL_FW_TYPE_506,            "atmel_at76c506",       "bin" },
 100         { ATMEL_FW_TYPE_NONE,           NULL,                   NULL }
 101 };
 102 MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
 103 MODULE_FIRMWARE("atmel_at76c502.bin");
 104 MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
 105 MODULE_FIRMWARE("atmel_at76c502d.bin");
 106 MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
 107 MODULE_FIRMWARE("atmel_at76c502e.bin");
 108 MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
 109 MODULE_FIRMWARE("atmel_at76c502_3com.bin");
 110 MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
 111 MODULE_FIRMWARE("atmel_at76c504.bin");
 112 MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
 113 MODULE_FIRMWARE("atmel_at76c504_2958.bin");
 114 MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
 115 MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
 116 MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
 117 MODULE_FIRMWARE("atmel_at76c506.bin");
 118
 119 #define MAX_SSID_LENGTH 32
 120 #define MGMT_JIFFIES (256 * HZ / 100)
 121
 122 #define MAX_BSS_ENTRIES 64
 123
 124 /* registers */
 125 #define GCR  0x00    /* (SIR0)  General Configuration Register */
 126 #define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
 127 #define AR   0x04
 128 #define DR   0x08
 129 #define MR1  0x12    /* Mirror Register 1 */
 130 #define MR2  0x14    /* Mirror Register 2 */
 131 #define MR3  0x16    /* Mirror Register 3 */
 132 #define MR4  0x18    /* Mirror Register 4 */
 133
 134 #define GPR1                            0x0c
 135 #define GPR2                            0x0e
 136 #define GPR3                            0x10
 137 /*
 138  * Constants for the GCR register.
 139  */
 140 #define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
 141 #define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
 142 #define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
 143 #define GCR_ENINT     0x0002          /* Enable Interrupts */
 144 #define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */
 145
 146 #define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
 147 #define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
 148 /*
 149  *Constants for the MR registers.
 150  */
 151 #define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
 152 #define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
 153 #define MAC_INIT_OK             0x0002        /* MAC boot has been completed */
 154
 155 #define MIB_MAX_DATA_BYTES    212
 156 #define MIB_HEADER_SIZE       4    /* first four fields */
 157
 158 struct get_set_mib {
 159         u8 type;
 160         u8 size;
 161         u8 index;
 162         u8 reserved;
 163         u8 data[MIB_MAX_DATA_BYTES];
 164 };
 165
 166 struct rx_desc {
 167         u32          Next;
 168         u16          MsduPos;
 169         u16          MsduSize;
 170
 171         u8           State;
 172         u8           Status;
 173         u8           Rate;
 174         u8           Rssi;
 175         u8           LinkQuality;
 176         u8           PreambleType;
 177         u16          Duration;
 178         u32          RxTime;
 179 };
 180
 181 #define RX_DESC_FLAG_VALID       0x80
 182 #define RX_DESC_FLAG_CONSUMED    0x40
 183 #define RX_DESC_FLAG_IDLE        0x00
 184
 185 #define RX_STATUS_SUCCESS        0x00
 186
 187 #define RX_DESC_MSDU_POS_OFFSET      4
 188 #define RX_DESC_MSDU_SIZE_OFFSET     6
 189 #define RX_DESC_FLAGS_OFFSET         8
 190 #define RX_DESC_STATUS_OFFSET        9
 191 #define RX_DESC_RSSI_OFFSET          11
 192 #define RX_DESC_LINK_QUALITY_OFFSET  12
 193 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 194 #define RX_DESC_DURATION_OFFSET      14
 195 #define RX_DESC_RX_TIME_OFFSET       16
 196
 197 struct tx_desc {
 198         u32       NextDescriptor;
 199         u16       TxStartOfFrame;
 200         u16       TxLength;
 201
 202         u8        TxState;
 203         u8        TxStatus;
 204         u8        RetryCount;
 205
 206         u8        TxRate;
 207
 208         u8        KeyIndex;
 209         u8        ChiperType;
 210         u8        ChipreLength;
 211         u8        Reserved1;
 212
 213         u8        Reserved;
 214         u8        PacketType;
 215         u16       HostTxLength;
 216 };
 217
 218 #define TX_DESC_NEXT_OFFSET          0
 219 #define TX_DESC_POS_OFFSET           4
 220 #define TX_DESC_SIZE_OFFSET          6
 221 #define TX_DESC_FLAGS_OFFSET         8
 222 #define TX_DESC_STATUS_OFFSET        9
 223 #define TX_DESC_RETRY_OFFSET         10
 224 #define TX_DESC_RATE_OFFSET          11
 225 #define TX_DESC_KEY_INDEX_OFFSET     12
 226 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 227 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 228 #define TX_DESC_PACKET_TYPE_OFFSET   17
 229 #define TX_DESC_HOST_LENGTH_OFFSET   18
 230
 231 /*
 232  * Host-MAC interface
 233  */
 234
 235 #define TX_STATUS_SUCCESS       0x00
 236
 237 #define TX_FIRM_OWN             0x80
 238 #define TX_DONE                 0x40
 239
 240 #define TX_ERROR                0x01
 241
 242 #define TX_PACKET_TYPE_DATA     0x01
 243 #define TX_PACKET_TYPE_MGMT     0x02
 244
 245 #define ISR_EMPTY               0x00        /* no bits set in ISR */
 246 #define ISR_TxCOMPLETE          0x01        /* packet transmitted */
 247 #define ISR_RxCOMPLETE          0x02        /* packet received */
 248 #define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
 249 #define ISR_FATAL_ERROR         0x08        /* Fatal error */
 250 #define ISR_COMMAND_COMPLETE    0x10        /* command completed */
 251 #define ISR_OUT_OF_RANGE        0x20        /* command completed */
 252 #define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
 253 #define ISR_GENERIC_IRQ         0x80
 254
 255 #define Local_Mib_Type          0x01
 256 #define Mac_Address_Mib_Type    0x02
 257 #define Mac_Mib_Type            0x03
 258 #define Statistics_Mib_Type     0x04
 259 #define Mac_Mgmt_Mib_Type       0x05
 260 #define Mac_Wep_Mib_Type        0x06
 261 #define Phy_Mib_Type            0x07
 262 #define Multi_Domain_MIB        0x08
 263
 264 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 265 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 266 #define MAC_MIB_RTS_THRESHOLD_POS             10
 267 #define MAC_MIB_SHORT_RETRY_POS               16
 268 #define MAC_MIB_LONG_RETRY_POS                17
 269 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 270 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 271 #define MAC_MGMT_MIB_STATION_ID_POS           6
 272 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 273 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 274 #define MAC_MGMT_MIB_PS_MODE_POS              53
 275 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 276 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 277 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 278 #define PHY_MIB_CHANNEL_POS                   14
 279 #define PHY_MIB_RATE_SET_POS                  20
 280 #define PHY_MIB_REG_DOMAIN_POS                26
 281 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 282 #define LOCAL_MIB_SSID_SIZE                   5
 283 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 284 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 285 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 286 #define LOCAL_MIB_PREAMBLE_TYPE               9
 287 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 288
 289 #define         CMD_Set_MIB_Vars              0x01
 290 #define         CMD_Get_MIB_Vars              0x02
 291 #define         CMD_Scan                      0x03
 292 #define         CMD_Join                      0x04
 293 #define         CMD_Start                     0x05
 294 #define         CMD_EnableRadio               0x06
 295 #define         CMD_DisableRadio              0x07
 296 #define         CMD_SiteSurvey                0x0B
 297
 298 #define         CMD_STATUS_IDLE                   0x00
 299 #define         CMD_STATUS_COMPLETE               0x01
 300 #define         CMD_STATUS_UNKNOWN                0x02
 301 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 302 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 303 #define         CMD_STATUS_TIME_OUT               0x07
 304 #define         CMD_STATUS_IN_PROGRESS            0x08
 305 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 306 #define         CMD_STATUS_HOST_ERROR             0xFF
 307 #define         CMD_STATUS_BUSY                   0xFE
 308
 309 #define CMD_BLOCK_COMMAND_OFFSET        0
 310 #define CMD_BLOCK_STATUS_OFFSET         1
 311 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 312
 313 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 314
 315 #define MGMT_FRAME_BODY_OFFSET          24
 316 #define MAX_AUTHENTICATION_RETRIES      3
 317 #define MAX_ASSOCIATION_RETRIES         3
 318
 319 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 320
 321 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 322 #define LOOP_RETRY_LIMIT   500000
 323
 324 #define ACTIVE_MODE     1
 325 #define PS_MODE         2
 326
 327 #define MAX_ENCRYPTION_KEYS 4
 328 #define MAX_ENCRYPTION_KEY_SIZE 40
 329
 330 /*
 331  * 802.11 related definitions
 332  */
 333
 334 /*
 335  * Regulatory Domains
 336  */
 337
 338 #define REG_DOMAIN_FCC          0x10    /* Channels     1-11    USA                             */
 339 #define REG_DOMAIN_DOC          0x20    /* Channel      1-11    Canada                          */
 340 #define REG_DOMAIN_ETSI         0x30    /* Channel      1-13    Europe (ex Spain/France)        */
 341 #define REG_DOMAIN_SPAIN        0x31    /* Channel      10-11   Spain                           */
 342 #define REG_DOMAIN_FRANCE       0x32    /* Channel      10-13   France                          */
 343 #define REG_DOMAIN_MKK          0x40    /* Channel      14      Japan                           */
 344 #define REG_DOMAIN_MKK1         0x41    /* Channel      1-14    Japan(MKK1)                     */
 345 #define REG_DOMAIN_ISRAEL       0x50    /* Channel      3-9     ISRAEL                          */
 346
 347 #define BSS_TYPE_AD_HOC         1
 348 #define BSS_TYPE_INFRASTRUCTURE 2
 349
 350 #define SCAN_TYPE_ACTIVE        0
 351 #define SCAN_TYPE_PASSIVE       1
 352
 353 #define LONG_PREAMBLE           0
 354 #define SHORT_PREAMBLE          1
 355 #define AUTO_PREAMBLE           2
 356
 357 #define DATA_FRAME_WS_HEADER_SIZE   30
 358
 359 /* promiscuous mode control */
 360 #define PROM_MODE_OFF                   0x0
 361 #define PROM_MODE_UNKNOWN               0x1
 362 #define PROM_MODE_CRC_FAILED            0x2
 363 #define PROM_MODE_DUPLICATED            0x4
 364 #define PROM_MODE_MGMT                  0x8
 365 #define PROM_MODE_CTRL                  0x10
 366 #define PROM_MODE_BAD_PROTOCOL          0x20
 367
 368 #define IFACE_INT_STATUS_OFFSET         0
 369 #define IFACE_INT_MASK_OFFSET           1
 370 #define IFACE_LOCKOUT_HOST_OFFSET       2
 371 #define IFACE_LOCKOUT_MAC_OFFSET        3
 372 #define IFACE_FUNC_CTRL_OFFSET          28
 373 #define IFACE_MAC_STAT_OFFSET           30
 374 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 375
 376 #define CIPHER_SUITE_NONE     0
 377 #define CIPHER_SUITE_WEP_64   1
 378 #define CIPHER_SUITE_TKIP     2
 379 #define CIPHER_SUITE_AES      3
 380 #define CIPHER_SUITE_CCX      4
 381 #define CIPHER_SUITE_WEP_128  5
 382
 383 /*
 384  * IFACE MACROS & definitions
 385  */
 386
 387 /*
 388  * FuncCtrl field:
 389  */
 390 #define FUNC_CTRL_TxENABLE              0x10
 391 #define FUNC_CTRL_RxENABLE              0x20
 392 #define FUNC_CTRL_INIT_COMPLETE         0x01
 393
 394 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 395    For copyright information and source see the end of this file. */
 396 static u8 mac_reader[] = {
 397         0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
 398         0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
 399         0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 400         0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
 401         0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
 402         0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
 403         0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
 404         0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
 405         0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
 406         0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
 407         0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 408         0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 409         0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 410         0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 411         0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
 412         0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
 413         0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
 414         0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
 415         0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
 416         0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
 417         0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
 418         0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
 419         0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
 420         0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 421         0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 422         0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
 423         0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
 424         0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
 425         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
 426         0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
 427         0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
 428         0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
 429         0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
 430         0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
 431         0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
 432         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
 433         0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
 434         0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
 435         0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
 436         0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
 437         0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
 438         0x00, 0x01, 0x00, 0x02
 439 };
 440
 441 struct atmel_private {
 442         void *card; /* Bus dependent structure varies for PCcard */
 443         int (*present_callback)(void *); /* And callback which uses it */
 444         char firmware_id[32];
 445         AtmelFWType firmware_type;
 446         u8 *firmware;
 447         int firmware_length;
 448         struct timer_list management_timer;
 449         struct net_device *dev;
 450         struct device *sys_dev;
 451         struct iw_statistics wstats;
 452         spinlock_t irqlock, timerlock;  /* spinlocks */
 453         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 454         enum {
 455                 CARD_TYPE_PARALLEL_FLASH,
 456                 CARD_TYPE_SPI_FLASH,
 457                 CARD_TYPE_EEPROM
 458         } card_type;
 459         int do_rx_crc; /* If we need to CRC incoming packets */
 460         int probe_crc; /* set if we don't yet know */
 461         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 462         u16 rx_desc_head;
 463         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 464         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 465
 466         u16 frag_seq, frag_len, frag_no;
 467         u8 frag_source[6];
 468
 469         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 470         u8 group_cipher_suite, pairwise_cipher_suite;
 471         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 472         int wep_key_len[MAX_ENCRYPTION_KEYS];
 473         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 474
 475         u16 host_info_base;
 476         struct host_info_struct {
 477                 /* NB this is matched to the hardware, don't change. */
 478                 u8 volatile int_status;
 479                 u8 volatile int_mask;
 480                 u8 volatile lockout_host;
 481                 u8 volatile lockout_mac;
 482
 483                 u16 tx_buff_pos;
 484                 u16 tx_buff_size;
 485                 u16 tx_desc_pos;
 486                 u16 tx_desc_count;
 487
 488                 u16 rx_buff_pos;
 489                 u16 rx_buff_size;
 490                 u16 rx_desc_pos;
 491                 u16 rx_desc_count;
 492
 493                 u16 build_version;
 494                 u16 command_pos;
 495
 496                 u16 major_version;
 497                 u16 minor_version;
 498
 499                 u16 func_ctrl;
 500                 u16 mac_status;
 501                 u16 generic_IRQ_type;
 502                 u8  reserved[2];
 503         } host_info;
 504
 505         enum {
 506                 STATION_STATE_SCANNING,
 507                 STATION_STATE_JOINNING,
 508                 STATION_STATE_AUTHENTICATING,
 509                 STATION_STATE_ASSOCIATING,
 510                 STATION_STATE_READY,
 511                 STATION_STATE_REASSOCIATING,
 512                 STATION_STATE_DOWN,
 513                 STATION_STATE_MGMT_ERROR
 514         } station_state;
 515
 516         int operating_mode, power_mode;
 517         time_t last_qual;
 518         int beacons_this_sec;
 519         int channel;
 520         int reg_domain, config_reg_domain;
 521         int tx_rate;
 522         int auto_tx_rate;
 523         int rts_threshold;
 524         int frag_threshold;
 525         int long_retry, short_retry;
 526         int preamble;
 527         int default_beacon_period, beacon_period, listen_interval;
 528         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 529         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 530         enum {
 531                 SITE_SURVEY_IDLE,
 532                 SITE_SURVEY_IN_PROGRESS,
 533                 SITE_SURVEY_COMPLETED
 534         } site_survey_state;
 535         unsigned long last_survey;
 536
 537         int station_was_associated, station_is_associated;
 538         int fast_scan;
 539
 540         struct bss_info {
 541                 int channel;
 542                 int SSIDsize;
 543                 int RSSI;
 544                 int UsingWEP;
 545                 int preamble;
 546                 int beacon_period;
 547                 int BSStype;
 548                 u8 BSSID[6];
 549                 u8 SSID[MAX_SSID_LENGTH];
 550         } BSSinfo[MAX_BSS_ENTRIES];
 551         int BSS_list_entries, current_BSS;
 552         int connect_to_any_BSS;
 553         int SSID_size, new_SSID_size;
 554         u8 CurrentBSSID[6], BSSID[6];
 555         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 556         u64 last_beacon_timestamp;
 557         u8 rx_buf[MAX_WIRELESS_BODY];
 558 };
 559
 560 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 561
 562 static const struct {
 563         int reg_domain;
 564         int min, max;
 565         char *name;
 566 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 567                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 568                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 569                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 570                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 571                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 572                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 573                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 574
 575 static void build_wpa_mib(struct atmel_private *priv);
 576 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 577 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 578                                const unsigned char *src, u16 len);
 579 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 580                                u16 src, u16 len);
 581 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 582 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 583 static int atmel_lock_mac(struct atmel_private *priv);
 584 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 585 static void atmel_command_irq(struct atmel_private *priv);
 586 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 587 static void atmel_management_frame(struct atmel_private *priv,
 588                                    struct ieee80211_hdr *header,
 589                                    u16 frame_len, u8 rssi);
 590 static void atmel_management_timer(u_long a);
 591 static void atmel_send_command(struct atmel_private *priv, int command,
 592                                void *cmd, int cmd_size);
 593 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 594                                    void *cmd, int cmd_size);
 595 static void atmel_transmit_management_frame(struct atmel_private *priv,
 596                                             struct ieee80211_hdr *header,
 597                                             u8 *body, int body_len);
 598
 599 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 600 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 601                            u8 data);
 602 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 603                             u16 data);
 604 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 605                           u8 *data, int data_len);
 606 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 607                           u8 *data, int data_len);
 608 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 609 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 610 static void atmel_smooth_qual(struct atmel_private *priv);
 611 static void atmel_writeAR(struct net_device *dev, u16 data);
 612 static int probe_atmel_card(struct net_device *dev);
 613 static int reset_atmel_card(struct net_device *dev);
 614 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 615 int atmel_open (struct net_device *dev);
 616
 617 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 618 {
 619         return priv->host_info_base + offset;
 620 }
 621
 622 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 623 {
 624         return priv->host_info.command_pos + offset;
 625 }
 626
 627 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 628 {
 629         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 630 }
 631
 632 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 633 {
 634         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 635 }
 636
 637 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 638 {
 639         return inb(dev->base_addr + offset);
 640 }
 641
 642 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 643 {
 644         outb(data, dev->base_addr + offset);
 645 }
 646
 647 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 648 {
 649         return inw(dev->base_addr + offset);
 650 }
 651
 652 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 653 {
 654         outw(data, dev->base_addr + offset);
 655 }
 656
 657 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 658 {
 659         atmel_writeAR(priv->dev, pos);
 660         return atmel_read8(priv->dev, DR);
 661 }
 662
 663 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 664 {
 665         atmel_writeAR(priv->dev, pos);
 666         atmel_write8(priv->dev, DR, data);
 667 }
 668
 669 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 670 {
 671         atmel_writeAR(priv->dev, pos);
 672         return atmel_read16(priv->dev, DR);
 673 }
 674
 675 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 676 {
 677         atmel_writeAR(priv->dev, pos);
 678         atmel_write16(priv->dev, DR, data);
 679 }
 680
 681 static const struct iw_handler_def atmel_handler_def;
 682
 683 static void tx_done_irq(struct atmel_private *priv)
 684 {
 685         int i;
 686
 687         for (i = 0;
 688              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 689                      i < priv->host_info.tx_desc_count;
 690              i++) {
 691                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 692                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 693                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 694
 695                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 696
 697                 priv->tx_free_mem += msdu_size;
 698                 priv->tx_desc_free++;
 699
 700                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 701                         priv->tx_buff_head = 0;
 702                 else
 703                         priv->tx_buff_head += msdu_size;
 704
 705                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 706                         priv->tx_desc_head++ ;
 707                 else
 708                         priv->tx_desc_head = 0;
 709
 710                 if (type == TX_PACKET_TYPE_DATA) {
 711                         if (status == TX_STATUS_SUCCESS)
 712                                 priv->dev->stats.tx_packets++;
 713                         else
 714                                 priv->dev->stats.tx_errors++;
 715                         netif_wake_queue(priv->dev);
 716                 }
 717         }
 718 }
 719
 720 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 721 {
 722         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 723
 724         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 725                 return 0;
 726
 727         if (bottom_free >= len)
 728                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 729
 730         if (priv->tx_free_mem - bottom_free >= len) {
 731                 priv->tx_buff_tail = 0;
 732                 return priv->host_info.tx_buff_pos;
 733         }
 734
 735         return 0;
 736 }
 737
 738 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 739                                  u16 len, u16 buff, u8 type)
 740 {
 741         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 742         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 743         if (!priv->use_wpa)
 744                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 745         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 746         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 747         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 748         if (priv->use_wpa) {
 749                 int cipher_type, cipher_length;
 750                 if (is_bcast) {
 751                         cipher_type = priv->group_cipher_suite;
 752                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 753                             cipher_type == CIPHER_SUITE_WEP_128)
 754                                 cipher_length = 8;
 755                         else if (cipher_type == CIPHER_SUITE_TKIP)
 756                                 cipher_length = 12;
 757                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 758                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 759                                 cipher_type = priv->pairwise_cipher_suite;
 760                                 cipher_length = 8;
 761                         } else {
 762                                 cipher_type = CIPHER_SUITE_NONE;
 763                                 cipher_length = 0;
 764                         }
 765                 } else {
 766                         cipher_type = priv->pairwise_cipher_suite;
 767                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 768                             cipher_type == CIPHER_SUITE_WEP_128)
 769                                 cipher_length = 8;
 770                         else if (cipher_type == CIPHER_SUITE_TKIP)
 771                                 cipher_length = 12;
 772                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 773                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 774                                 cipher_type = priv->group_cipher_suite;
 775                                 cipher_length = 8;
 776                         } else {
 777                                 cipher_type = CIPHER_SUITE_NONE;
 778                                 cipher_length = 0;
 779                         }
 780                 }
 781
 782                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 783                             cipher_type);
 784                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 785                             cipher_length);
 786         }
 787         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 788         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 789         if (priv->tx_desc_previous != priv->tx_desc_tail)
 790                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 791         priv->tx_desc_previous = priv->tx_desc_tail;
 792         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 793                 priv->tx_desc_tail++;
 794         else
 795                 priv->tx_desc_tail = 0;
 796         priv->tx_desc_free--;
 797         priv->tx_free_mem -= len;
 798 }
 799
 800 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 801 {
 802         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 803         struct atmel_private *priv = netdev_priv(dev);
 804         struct ieee80211_hdr header;
 805         unsigned long flags;
 806         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 807
 808         if (priv->card && priv->present_callback &&
 809             !(*priv->present_callback)(priv->card)) {
 810                 dev->stats.tx_errors++;
 811                 dev_kfree_skb(skb);
 812                 return NETDEV_TX_OK;
 813         }
 814
 815         if (priv->station_state != STATION_STATE_READY) {
 816                 dev->stats.tx_errors++;
 817                 dev_kfree_skb(skb);
 818                 return NETDEV_TX_OK;
 819         }
 820
 821         /* first ensure the timer func cannot run */
 822         spin_lock_bh(&priv->timerlock);
 823         /* then stop the hardware ISR */
 824         spin_lock_irqsave(&priv->irqlock, flags);
 825         /* nb doing the above in the opposite order will deadlock */
 826
 827         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 828            12 first bytes (containing DA/SA) and put them in the appropriate
 829            fields of the Wireless Header. Thus the packet length is then the
 830            initial + 18 (+30-12) */
 831
 832         if (!(buff = find_tx_buff(priv, len + 18))) {
 833                 dev->stats.tx_dropped++;
 834                 spin_unlock_irqrestore(&priv->irqlock, flags);
 835                 spin_unlock_bh(&priv->timerlock);
 836                 netif_stop_queue(dev);
 837                 return NETDEV_TX_BUSY;
 838         }
 839
 840         frame_ctl = IEEE80211_FTYPE_DATA;
 841         header.duration_id = 0;
 842         header.seq_ctrl = 0;
 843         if (priv->wep_is_on)
 844                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 845         if (priv->operating_mode == IW_MODE_ADHOC) {
 846                 skb_copy_from_linear_data(skb, &header.addr1, 6);
 847                 memcpy(&header.addr2, dev->dev_addr, 6);
 848                 memcpy(&header.addr3, priv->BSSID, 6);
 849         } else {
 850                 frame_ctl |= IEEE80211_FCTL_TODS;
 851                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 852                 memcpy(&header.addr2, dev->dev_addr, 6);
 853                 skb_copy_from_linear_data(skb, &header.addr3, 6);
 854         }
 855
 856         if (priv->use_wpa)
 857                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 858
 859         header.frame_control = cpu_to_le16(frame_ctl);
 860         /* Copy the wireless header into the card */
 861         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 862         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 863         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 864         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 865
 866         /* low bit of first byte of destination tells us if broadcast */
 867         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 868         dev->stats.tx_bytes += len;
 869
 870         spin_unlock_irqrestore(&priv->irqlock, flags);
 871         spin_unlock_bh(&priv->timerlock);
 872         dev_kfree_skb(skb);
 873
 874         return NETDEV_TX_OK;
 875 }
 876
 877 static void atmel_transmit_management_frame(struct atmel_private *priv,
 878                                             struct ieee80211_hdr *header,
 879                                             u8 *body, int body_len)
 880 {
 881         u16 buff;
 882         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 883
 884         if (!(buff = find_tx_buff(priv, len)))
 885                 return;
 886
 887         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 888         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 889         priv->tx_buff_tail += len;
 890         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 891 }
 892
 893 static void fast_rx_path(struct atmel_private *priv,
 894                          struct ieee80211_hdr *header,
 895                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 896 {
 897         /* fast path: unfragmented packet copy directly into skbuf */
 898         u8 mac4[6];
 899         struct sk_buff  *skb;
 900         unsigned char *skbp;
 901
 902         /* get the final, mac 4 header field, this tells us encapsulation */
 903         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 904         msdu_size -= 6;
 905
 906         if (priv->do_rx_crc) {
 907                 crc = crc32_le(crc, mac4, 6);
 908                 msdu_size -= 4;
 909         }
 910
 911         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 912                 priv->dev->stats.rx_dropped++;
 913                 return;
 914         }
 915
 916         skb_reserve(skb, 2);
 917         skbp = skb_put(skb, msdu_size + 12);
 918         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 919
 920         if (priv->do_rx_crc) {
 921                 u32 netcrc;
 922                 crc = crc32_le(crc, skbp + 12, msdu_size);
 923                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 924                 if ((crc ^ 0xffffffff) != netcrc) {
 925                         priv->dev->stats.rx_crc_errors++;
 926                         dev_kfree_skb(skb);
 927                         return;
 928                 }
 929         }
 930
 931         memcpy(skbp, header->addr1, 6); /* destination address */
 932         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 933                 memcpy(&skbp[6], header->addr3, 6);
 934         else
 935                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 936
 937         skb->protocol = eth_type_trans(skb, priv->dev);
 938         skb->ip_summed = CHECKSUM_NONE;
 939         netif_rx(skb);
 940         priv->dev->stats.rx_bytes += 12 + msdu_size;
 941         priv->dev->stats.rx_packets++;
 942 }
 943
 944 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 945    It doesn't matter that this is slow: it is only used to proble the first few
 946    packets. */
 947 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 948 {
 949         int i = msdu_size - 4;
 950         u32 netcrc, crc = 0xffffffff;
 951
 952         if (msdu_size < 4)
 953                 return 0;
 954
 955         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 956
 957         atmel_writeAR(priv->dev, packet_loc);
 958         while (i--) {
 959                 u8 octet = atmel_read8(priv->dev, DR);
 960                 crc = crc32_le(crc, &octet, 1);
 961         }
 962
 963         return (crc ^ 0xffffffff) == netcrc;
 964 }
 965
 966 static void frag_rx_path(struct atmel_private *priv,
 967                          struct ieee80211_hdr *header,
 968                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 969                          u8 frag_no, int more_frags)
 970 {
 971         u8 mac4[6];
 972         u8 source[6];
 973         struct sk_buff *skb;
 974
 975         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 976                 memcpy(source, header->addr3, 6);
 977         else
 978                 memcpy(source, header->addr2, 6);
 979
 980         rx_packet_loc += 24; /* skip header */
 981
 982         if (priv->do_rx_crc)
 983                 msdu_size -= 4;
 984
 985         if (frag_no == 0) { /* first fragment */
 986                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 987                 msdu_size -= 6;
 988                 rx_packet_loc += 6;
 989
 990                 if (priv->do_rx_crc)
 991                         crc = crc32_le(crc, mac4, 6);
 992
 993                 priv->frag_seq = seq_no;
 994                 priv->frag_no = 1;
 995                 priv->frag_len = msdu_size;
 996                 memcpy(priv->frag_source, source, 6);
 997                 memcpy(&priv->rx_buf[6], source, 6);
 998                 memcpy(priv->rx_buf, header->addr1, 6);
 999
1000                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1001
1002                 if (priv->do_rx_crc) {
1003                         u32 netcrc;
1004                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1005                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1006                         if ((crc ^ 0xffffffff) != netcrc) {
1007                                 priv->dev->stats.rx_crc_errors++;
1008                                 memset(priv->frag_source, 0xff, 6);
1009                         }
1010                 }
1011
1012         } else if (priv->frag_no == frag_no &&
1013                    priv->frag_seq == seq_no &&
1014                    memcmp(priv->frag_source, source, 6) == 0) {
1015
1016                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1017                                    rx_packet_loc, msdu_size);
1018                 if (priv->do_rx_crc) {
1019                         u32 netcrc;
1020                         crc = crc32_le(crc,
1021                                        &priv->rx_buf[12 + priv->frag_len],
1022                                        msdu_size);
1023                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1024                         if ((crc ^ 0xffffffff) != netcrc) {
1025                                 priv->dev->stats.rx_crc_errors++;
1026                                 memset(priv->frag_source, 0xff, 6);
1027                                 more_frags = 1; /* don't send broken assembly */
1028                         }
1029                 }
1030
1031                 priv->frag_len += msdu_size;
1032                 priv->frag_no++;
1033
1034                 if (!more_frags) { /* last one */
1035                         memset(priv->frag_source, 0xff, 6);
1036                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1037                                 priv->dev->stats.rx_dropped++;
1038                         } else {
1039                                 skb_reserve(skb, 2);
1040                                 memcpy(skb_put(skb, priv->frag_len + 12),
1041                                        priv->rx_buf,
1042                                        priv->frag_len + 12);
1043                                 skb->protocol = eth_type_trans(skb, priv->dev);
1044                                 skb->ip_summed = CHECKSUM_NONE;
1045                                 netif_rx(skb);
1046                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1047                                 priv->dev->stats.rx_packets++;
1048                         }
1049                 }
1050         } else
1051                 priv->wstats.discard.fragment++;
1052 }
1053
1054 static void rx_done_irq(struct atmel_private *priv)
1055 {
1056         int i;
1057         struct ieee80211_hdr header;
1058
1059         for (i = 0;
1060              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1061                      i < priv->host_info.rx_desc_count;
1062              i++) {
1063
1064                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1065                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1066                 u32 crc = 0xffffffff;
1067
1068                 if (status != RX_STATUS_SUCCESS) {
1069                         if (status == 0xc1) /* determined by experiment */
1070                                 priv->wstats.discard.nwid++;
1071                         else
1072                                 priv->dev->stats.rx_errors++;
1073                         goto next;
1074                 }
1075
1076                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1077                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1078
1079                 if (msdu_size < 30) {
1080                         priv->dev->stats.rx_errors++;
1081                         goto next;
1082                 }
1083
1084                 /* Get header as far as end of seq_ctrl */
1085                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1086                 frame_ctl = le16_to_cpu(header.frame_control);
1087                 seq_control = le16_to_cpu(header.seq_ctrl);
1088
1089                 /* probe for CRC use here if needed  once five packets have
1090                    arrived with the same crc status, we assume we know what's
1091                    happening and stop probing */
1092                 if (priv->probe_crc) {
1093                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1094                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1095                         } else {
1096                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1097                         }
1098                         if (priv->do_rx_crc) {
1099                                 if (priv->crc_ok_cnt++ > 5)
1100                                         priv->probe_crc = 0;
1101                         } else {
1102                                 if (priv->crc_ko_cnt++ > 5)
1103                                         priv->probe_crc = 0;
1104                         }
1105                 }
1106
1107                 /* don't CRC header when WEP in use */
1108                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1109                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1110                 }
1111                 msdu_size -= 24; /* header */
1112
1113                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1114                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1115                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1116                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1117
1118                         if (!more_fragments && packet_fragment_no == 0) {
1119                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1120                         } else {
1121                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1122                                              packet_sequence_no, packet_fragment_no, more_fragments);
1123                         }
1124                 }
1125
1126                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1127                         /* copy rest of packet into buffer */
1128                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1129
1130                         /* we use the same buffer for frag reassembly and control packets */
1131                         memset(priv->frag_source, 0xff, 6);
1132
1133                         if (priv->do_rx_crc) {
1134                                 /* last 4 octets is crc */
1135                                 msdu_size -= 4;
1136                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1137                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1138                                         priv->dev->stats.rx_crc_errors++;
1139                                         goto next;
1140                                 }
1141                         }
1142
1143                         atmel_management_frame(priv, &header, msdu_size,
1144                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1145                 }
1146
1147 next:
1148                 /* release descriptor */
1149                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1150
1151                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1152                         priv->rx_desc_head++;
1153                 else
1154                         priv->rx_desc_head = 0;
1155         }
1156 }
1157
1158 static irqreturn_t service_interrupt(int irq, void *dev_id)
1159 {
1160         struct net_device *dev = (struct net_device *) dev_id;
1161         struct atmel_private *priv = netdev_priv(dev);
1162         u8 isr;
1163         int i = -1;
1164         static const u8 irq_order[] = {
1165                 ISR_OUT_OF_RANGE,
1166                 ISR_RxCOMPLETE,
1167                 ISR_TxCOMPLETE,
1168                 ISR_RxFRAMELOST,
1169                 ISR_FATAL_ERROR,
1170                 ISR_COMMAND_COMPLETE,
1171                 ISR_IBSS_MERGE,
1172                 ISR_GENERIC_IRQ
1173         };
1174
1175         if (priv->card && priv->present_callback &&
1176             !(*priv->present_callback)(priv->card))
1177                 return IRQ_HANDLED;
1178
1179         /* In this state upper-level code assumes it can mess with
1180            the card unhampered by interrupts which may change register state.
1181            Note that even though the card shouldn't generate interrupts
1182            the inturrupt line may be shared. This allows card setup
1183            to go on without disabling interrupts for a long time. */
1184         if (priv->station_state == STATION_STATE_DOWN)
1185                 return IRQ_NONE;
1186
1187         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1188
1189         while (1) {
1190                 if (!atmel_lock_mac(priv)) {
1191                         /* failed to contact card */
1192                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1193                         return IRQ_HANDLED;
1194                 }
1195
1196                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1197                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1198
1199                 if (!isr) {
1200                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1201                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1202                 }
1203
1204                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1205
1206                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1207                         if (isr & irq_order[i])
1208                                 break;
1209
1210                 if (!atmel_lock_mac(priv)) {
1211                         /* failed to contact card */
1212                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1213                         return IRQ_HANDLED;
1214                 }
1215
1216                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1217                 isr ^= irq_order[i];
1218                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1219                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1220
1221                 switch (irq_order[i]) {
1222
1223                 case ISR_OUT_OF_RANGE:
1224                         if (priv->operating_mode == IW_MODE_INFRA &&
1225                             priv->station_state == STATION_STATE_READY) {
1226                                 priv->station_is_associated = 0;
1227                                 atmel_scan(priv, 1);
1228                         }
1229                         break;
1230
1231                 case ISR_RxFRAMELOST:
1232                         priv->wstats.discard.misc++;
1233                         /* fall through */
1234                 case ISR_RxCOMPLETE:
1235                         rx_done_irq(priv);
1236                         break;
1237
1238                 case ISR_TxCOMPLETE:
1239                         tx_done_irq(priv);
1240                         break;
1241
1242                 case ISR_FATAL_ERROR:
1243                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1244                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1245                         break;
1246
1247                 case ISR_COMMAND_COMPLETE:
1248                         atmel_command_irq(priv);
1249                         break;
1250
1251                 case ISR_IBSS_MERGE:
1252                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1253                                       priv->CurrentBSSID, 6);
1254                         /* The WPA stuff cares about the current AP address */
1255                         if (priv->use_wpa)
1256                                 build_wpa_mib(priv);
1257                         break;
1258                 case ISR_GENERIC_IRQ:
1259                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1260                         break;
1261                 }
1262         }
1263 }
1264
1265 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1266 {
1267         struct atmel_private *priv = netdev_priv(dev);
1268
1269         /* update the link quality here in case we are seeing no beacons
1270            at all to drive the process */
1271         atmel_smooth_qual(priv);
1272
1273         priv->wstats.status = priv->station_state;
1274
1275         if (priv->operating_mode == IW_MODE_INFRA) {
1276                 if (priv->station_state != STATION_STATE_READY) {
1277                         priv->wstats.qual.qual = 0;
1278                         priv->wstats.qual.level = 0;
1279                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1280                                         | IW_QUAL_LEVEL_INVALID);
1281                 }
1282                 priv->wstats.qual.noise = 0;
1283                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1284         } else {
1285                 /* Quality levels cannot be determined in ad-hoc mode,
1286                    because we can 'hear' more that one remote station. */
1287                 priv->wstats.qual.qual = 0;
1288                 priv->wstats.qual.level = 0;
1289                 priv->wstats.qual.noise = 0;
1290                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1291                                         | IW_QUAL_LEVEL_INVALID
1292                                         | IW_QUAL_NOISE_INVALID;
1293                 priv->wstats.miss.beacon = 0;
1294         }
1295
1296         return &priv->wstats;
1297 }
1298
1299 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1300 {
1301         if ((new_mtu < 68) || (new_mtu > 2312))
1302                 return -EINVAL;
1303         dev->mtu = new_mtu;
1304         return 0;
1305 }
1306
1307 static int atmel_set_mac_address(struct net_device *dev, void *p)
1308 {
1309         struct sockaddr *addr = p;
1310
1311         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1312         return atmel_open(dev);
1313 }
1314
1315 EXPORT_SYMBOL(atmel_open);
1316
1317 int atmel_open(struct net_device *dev)
1318 {
1319         struct atmel_private *priv = netdev_priv(dev);
1320         int i, channel, err;
1321
1322         /* any scheduled timer is no longer needed and might screw things up.. */
1323         del_timer_sync(&priv->management_timer);
1324
1325         /* Interrupts will not touch the card once in this state... */
1326         priv->station_state = STATION_STATE_DOWN;
1327
1328         if (priv->new_SSID_size) {
1329                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1330                 priv->SSID_size = priv->new_SSID_size;
1331                 priv->new_SSID_size = 0;
1332         }
1333         priv->BSS_list_entries = 0;
1334
1335         priv->AuthenticationRequestRetryCnt = 0;
1336         priv->AssociationRequestRetryCnt = 0;
1337         priv->ReAssociationRequestRetryCnt = 0;
1338         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1339         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1340
1341         priv->site_survey_state = SITE_SURVEY_IDLE;
1342         priv->station_is_associated = 0;
1343
1344         err = reset_atmel_card(dev);
1345         if (err)
1346                 return err;
1347
1348         if (priv->config_reg_domain) {
1349                 priv->reg_domain = priv->config_reg_domain;
1350                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1351         } else {
1352                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1353                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1354                         if (priv->reg_domain == channel_table[i].reg_domain)
1355                                 break;
1356                 if (i == ARRAY_SIZE(channel_table)) {
1357                         priv->reg_domain = REG_DOMAIN_MKK1;
1358                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1359                 }
1360         }
1361
1362         if ((channel = atmel_validate_channel(priv, priv->channel)))
1363                 priv->channel = channel;
1364
1365         /* this moves station_state on.... */
1366         atmel_scan(priv, 1);
1367
1368         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1369         return 0;
1370 }
1371
1372 static int atmel_close(struct net_device *dev)
1373 {
1374         struct atmel_private *priv = netdev_priv(dev);
1375
1376         /* Send event to userspace that we are disassociating */
1377         if (priv->station_state == STATION_STATE_READY) {
1378                 union iwreq_data wrqu;
1379
1380                 wrqu.data.length = 0;
1381                 wrqu.data.flags = 0;
1382                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1383                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1384                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1385         }
1386
1387         atmel_enter_state(priv, STATION_STATE_DOWN);
1388
1389         if (priv->bus_type == BUS_TYPE_PCCARD)
1390                 atmel_write16(dev, GCR, 0x0060);
1391         atmel_write16(dev, GCR, 0x0040);
1392         return 0;
1393 }
1394
1395 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1396 {
1397         /* check that channel is OK, if so return zero,
1398            else return suitable default channel */
1399         int i;
1400
1401         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1402                 if (priv->reg_domain == channel_table[i].reg_domain) {
1403                         if (channel >= channel_table[i].min &&
1404                             channel <= channel_table[i].max)
1405                                 return 0;
1406                         else
1407                                 return channel_table[i].min;
1408                 }
1409         return 0;
1410 }
1411
1412 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1413 {
1414         int i;
1415         char *p = buf;
1416         char *s, *r, *c;
1417
1418         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1419                      DRIVER_MAJOR, DRIVER_MINOR);
1420
1421         if (priv->station_state != STATION_STATE_DOWN) {
1422                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1423                                 "Firmware location:\t",
1424                              priv->host_info.major_version,
1425                              priv->host_info.minor_version,
1426                              priv->host_info.build_version);
1427
1428                 if (priv->card_type != CARD_TYPE_EEPROM)
1429                         p += sprintf(p, "on card\n");
1430                 else if (priv->firmware)
1431                         p += sprintf(p, "%s loaded by host\n",
1432                                      priv->firmware_id);
1433                 else
1434                         p += sprintf(p, "%s loaded by hotplug\n",
1435                                      priv->firmware_id);
1436
1437                 switch (priv->card_type) {
1438                 case CARD_TYPE_PARALLEL_FLASH:
1439                         c = "Parallel flash";
1440                         break;
1441                 case CARD_TYPE_SPI_FLASH:
1442                         c = "SPI flash\n";
1443                         break;
1444                 case CARD_TYPE_EEPROM:
1445                         c = "EEPROM";
1446                         break;
1447                 default:
1448                         c = "<unknown>";
1449                 }
1450
1451                 r = "<unknown>";
1452                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1453                         if (priv->reg_domain == channel_table[i].reg_domain)
1454                                 r = channel_table[i].name;
1455
1456                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1457                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1458                 p += sprintf(p, "Host CRC checking:\t%s\n",
1459                              priv->do_rx_crc ? "On" : "Off");
1460                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1461                              priv->use_wpa ? "Yes" : "No");
1462         }
1463
1464         switch (priv->station_state) {
1465         case STATION_STATE_SCANNING:
1466                 s = "Scanning";
1467                 break;
1468         case STATION_STATE_JOINNING:
1469                 s = "Joining";
1470                 break;
1471         case STATION_STATE_AUTHENTICATING:
1472                 s = "Authenticating";
1473                 break;
1474         case STATION_STATE_ASSOCIATING:
1475                 s = "Associating";
1476                 break;
1477         case STATION_STATE_READY:
1478                 s = "Ready";
1479                 break;
1480         case STATION_STATE_REASSOCIATING:
1481                 s = "Reassociating";
1482                 break;
1483         case STATION_STATE_MGMT_ERROR:
1484                 s = "Management error";
1485                 break;
1486         case STATION_STATE_DOWN:
1487                 s = "Down";
1488                 break;
1489         default:
1490                 s = "<unknown>";
1491         }
1492
1493         p += sprintf(p, "Current state:\t\t%s\n", s);
1494         return p - buf;
1495 }
1496
1497 static int atmel_read_proc(char *page, char **start, off_t off,
1498                            int count, int *eof, void *data)
1499 {
1500         struct atmel_private *priv = data;
1501         int len = atmel_proc_output (page, priv);
1502         if (len <= off+count)
1503                 *eof = 1;
1504         *start = page + off;
1505         len -= off;
1506         if (len > count)
1507                 len = count;
1508         if (len < 0)
1509                 len = 0;
1510         return len;
1511 }
1512
1513 static const struct net_device_ops atmel_netdev_ops = {
1514         .ndo_open               = atmel_open,
1515         .ndo_stop               = atmel_close,
1516         .ndo_change_mtu         = atmel_change_mtu,
1517         .ndo_set_mac_address    = atmel_set_mac_address,
1518         .ndo_start_xmit         = start_tx,
1519         .ndo_do_ioctl           = atmel_ioctl,
1520         .ndo_validate_addr      = eth_validate_addr,
1521 };
1522
1523 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1524                                    const AtmelFWType fw_type,
1525                                    struct device *sys_dev,
1526                                    int (*card_present)(void *), void *card)
1527 {
1528         struct proc_dir_entry *ent;
1529         struct net_device *dev;
1530         struct atmel_private *priv;
1531         int rc;
1532
1533         /* Create the network device object. */
1534         dev = alloc_etherdev(sizeof(*priv));
1535         if (!dev) {
1536                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1537                 return NULL;
1538         }
1539         if (dev_alloc_name(dev, dev->name) < 0) {
1540                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1541                 goto err_out_free;
1542         }
1543
1544         priv = netdev_priv(dev);
1545         priv->dev = dev;
1546         priv->sys_dev = sys_dev;
1547         priv->present_callback = card_present;
1548         priv->card = card;
1549         priv->firmware = NULL;
1550         priv->firmware_id[0] = '\0';
1551         priv->firmware_type = fw_type;
1552         if (firmware) /* module parameter */
1553                 strcpy(priv->firmware_id, firmware);
1554         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1555         priv->station_state = STATION_STATE_DOWN;
1556         priv->do_rx_crc = 0;
1557         /* For PCMCIA cards, some chips need CRC, some don't
1558            so we have to probe. */
1559         if (priv->bus_type == BUS_TYPE_PCCARD) {
1560                 priv->probe_crc = 1;
1561                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1562         } else
1563                 priv->probe_crc = 0;
1564         priv->last_qual = jiffies;
1565         priv->last_beacon_timestamp = 0;
1566         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1567         memset(priv->BSSID, 0, 6);
1568         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1569         priv->station_was_associated = 0;
1570
1571         priv->last_survey = jiffies;
1572         priv->preamble = LONG_PREAMBLE;
1573         priv->operating_mode = IW_MODE_INFRA;
1574         priv->connect_to_any_BSS = 0;
1575         priv->config_reg_domain = 0;
1576         priv->reg_domain = 0;
1577         priv->tx_rate = 3;
1578         priv->auto_tx_rate = 1;
1579         priv->channel = 4;
1580         priv->power_mode = 0;
1581         priv->SSID[0] = '\0';
1582         priv->SSID_size = 0;
1583         priv->new_SSID_size = 0;
1584         priv->frag_threshold = 2346;
1585         priv->rts_threshold = 2347;
1586         priv->short_retry = 7;
1587         priv->long_retry = 4;
1588
1589         priv->wep_is_on = 0;
1590         priv->default_key = 0;
1591         priv->encryption_level = 0;
1592         priv->exclude_unencrypted = 0;
1593         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1594         priv->use_wpa = 0;
1595         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1596         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1597
1598         priv->default_beacon_period = priv->beacon_period = 100;
1599         priv->listen_interval = 1;
1600
1601         init_timer(&priv->management_timer);
1602         spin_lock_init(&priv->irqlock);
1603         spin_lock_init(&priv->timerlock);
1604         priv->management_timer.function = atmel_management_timer;
1605         priv->management_timer.data = (unsigned long) dev;
1606
1607         dev->netdev_ops = &atmel_netdev_ops;
1608         dev->wireless_handlers = &atmel_handler_def;
1609         dev->irq = irq;
1610         dev->base_addr = port;
1611
1612         SET_NETDEV_DEV(dev, sys_dev);
1613
1614         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1615                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1616                 goto err_out_free;
1617         }
1618
1619         if (!request_region(dev->base_addr, 32,
1620                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1621                 goto err_out_irq;
1622         }
1623
1624         if (register_netdev(dev))
1625                 goto err_out_res;
1626
1627         if (!probe_atmel_card(dev)) {
1628                 unregister_netdev(dev);
1629                 goto err_out_res;
1630         }
1631
1632         netif_carrier_off(dev);
1633
1634         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1635         if (!ent)
1636                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1637
1638         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1639                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1640
1641         return dev;
1642
1643 err_out_res:
1644         release_region(dev->base_addr, 32);
1645 err_out_irq:
1646         free_irq(dev->irq, dev);
1647 err_out_free:
1648         free_netdev(dev);
1649         return NULL;
1650 }
1651
1652 EXPORT_SYMBOL(init_atmel_card);
1653
1654 void stop_atmel_card(struct net_device *dev)
1655 {
1656         struct atmel_private *priv = netdev_priv(dev);
1657
1658         /* put a brick on it... */
1659         if (priv->bus_type == BUS_TYPE_PCCARD)
1660                 atmel_write16(dev, GCR, 0x0060);
1661         atmel_write16(dev, GCR, 0x0040);
1662
1663         del_timer_sync(&priv->management_timer);
1664         unregister_netdev(dev);
1665         remove_proc_entry("driver/atmel", NULL);
1666         free_irq(dev->irq, dev);
1667         kfree(priv->firmware);
1668         release_region(dev->base_addr, 32);
1669         free_netdev(dev);
1670 }
1671
1672 EXPORT_SYMBOL(stop_atmel_card);
1673
1674 static int atmel_set_essid(struct net_device *dev,
1675                            struct iw_request_info *info,
1676                            struct iw_point *dwrq,
1677                            char *extra)
1678 {
1679         struct atmel_private *priv = netdev_priv(dev);
1680
1681         /* Check if we asked for `any' */
1682         if (dwrq->flags == 0) {
1683                 priv->connect_to_any_BSS = 1;
1684         } else {
1685                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1686
1687                 priv->connect_to_any_BSS = 0;
1688
1689                 /* Check the size of the string */
1690                 if (dwrq->length > MAX_SSID_LENGTH)
1691                          return -E2BIG;
1692                 if (index != 0)
1693                         return -EINVAL;
1694
1695                 memcpy(priv->new_SSID, extra, dwrq->length);
1696                 priv->new_SSID_size = dwrq->length;
1697         }
1698
1699         return -EINPROGRESS;
1700 }
1701
1702 static int atmel_get_essid(struct net_device *dev,
1703                            struct iw_request_info *info,
1704                            struct iw_point *dwrq,
1705                            char *extra)
1706 {
1707         struct atmel_private *priv = netdev_priv(dev);
1708
1709         /* Get the current SSID */
1710         if (priv->new_SSID_size != 0) {
1711                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1712                 dwrq->length = priv->new_SSID_size;
1713         } else {
1714                 memcpy(extra, priv->SSID, priv->SSID_size);
1715                 dwrq->length = priv->SSID_size;
1716         }
1717
1718         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1719
1720         return 0;
1721 }
1722
1723 static int atmel_get_wap(struct net_device *dev,
1724                          struct iw_request_info *info,
1725                          struct sockaddr *awrq,
1726                          char *extra)
1727 {
1728         struct atmel_private *priv = netdev_priv(dev);
1729         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1730         awrq->sa_family = ARPHRD_ETHER;
1731
1732         return 0;
1733 }
1734
1735 static int atmel_set_encode(struct net_device *dev,
1736                             struct iw_request_info *info,
1737                             struct iw_point *dwrq,
1738                             char *extra)
1739 {
1740         struct atmel_private *priv = netdev_priv(dev);
1741
1742         /* Basic checking: do we have a key to set ?
1743          * Note : with the new API, it's impossible to get a NULL pointer.
1744          * Therefore, we need to check a key size == 0 instead.
1745          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1746          * when no key is present (only change flags), but older versions
1747          * don't do it. - Jean II */
1748         if (dwrq->length > 0) {
1749                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1750                 int current_index = priv->default_key;
1751                 /* Check the size of the key */
1752                 if (dwrq->length > 13) {
1753                         return -EINVAL;
1754                 }
1755                 /* Check the index (none -> use current) */
1756                 if (index < 0 || index >= 4)
1757                         index = current_index;
1758                 else
1759                         priv->default_key = index;
1760                 /* Set the length */
1761                 if (dwrq->length > 5)
1762                         priv->wep_key_len[index] = 13;
1763                 else
1764                         if (dwrq->length > 0)
1765                                 priv->wep_key_len[index] = 5;
1766                         else
1767                                 /* Disable the key */
1768                                 priv->wep_key_len[index] = 0;
1769                 /* Check if the key is not marked as invalid */
1770                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1771                         /* Cleanup */
1772                         memset(priv->wep_keys[index], 0, 13);
1773                         /* Copy the key in the driver */
1774                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1775                 }
1776                 /* WE specify that if a valid key is set, encryption
1777                  * should be enabled (user may turn it off later)
1778                  * This is also how "iwconfig ethX key on" works */
1779                 if (index == current_index &&
1780                     priv->wep_key_len[index] > 0) {
1781                         priv->wep_is_on = 1;
1782                         priv->exclude_unencrypted = 1;
1783                         if (priv->wep_key_len[index] > 5) {
1784                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1785                                 priv->encryption_level = 2;
1786                         } else {
1787                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1788                                 priv->encryption_level = 1;
1789                         }
1790                 }
1791         } else {
1792                 /* Do we want to just set the transmit key index ? */
1793                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1794                 if (index >= 0 && index < 4) {
1795                         priv->default_key = index;
1796                 } else
1797                         /* Don't complain if only change the mode */
1798                         if (!(dwrq->flags & IW_ENCODE_MODE))
1799                                 return -EINVAL;
1800         }
1801         /* Read the flags */
1802         if (dwrq->flags & IW_ENCODE_DISABLED) {
1803                 priv->wep_is_on = 0;
1804                 priv->encryption_level = 0;
1805                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1806         } else {
1807                 priv->wep_is_on = 1;
1808                 if (priv->wep_key_len[priv->default_key] > 5) {
1809                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1810                         priv->encryption_level = 2;
1811                 } else {
1812                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1813                         priv->encryption_level = 1;
1814                 }
1815         }
1816         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1817                 priv->exclude_unencrypted = 1;
1818         if (dwrq->flags & IW_ENCODE_OPEN)
1819                 priv->exclude_unencrypted = 0;
1820
1821         return -EINPROGRESS;            /* Call commit handler */
1822 }
1823
1824 static int atmel_get_encode(struct net_device *dev,
1825                             struct iw_request_info *info,
1826                             struct iw_point *dwrq,
1827                             char *extra)
1828 {
1829         struct atmel_private *priv = netdev_priv(dev);
1830         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1831
1832         if (!priv->wep_is_on)
1833                 dwrq->flags = IW_ENCODE_DISABLED;
1834         else {
1835                 if (priv->exclude_unencrypted)
1836                         dwrq->flags = IW_ENCODE_RESTRICTED;
1837                 else
1838                         dwrq->flags = IW_ENCODE_OPEN;
1839         }
1840                 /* Which key do we want ? -1 -> tx index */
1841         if (index < 0 || index >= 4)
1842                 index = priv->default_key;
1843         dwrq->flags |= index + 1;
1844         /* Copy the key to the user buffer */
1845         dwrq->length = priv->wep_key_len[index];
1846         if (dwrq->length > 16) {
1847                 dwrq->length = 0;
1848         } else {
1849                 memset(extra, 0, 16);
1850                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1851         }
1852
1853         return 0;
1854 }
1855
1856 static int atmel_set_encodeext(struct net_device *dev,
1857                             struct iw_request_info *info,
1858                             union iwreq_data *wrqu,
1859                             char *extra)
1860 {
1861         struct atmel_private *priv = netdev_priv(dev);
1862         struct iw_point *encoding = &wrqu->encoding;
1863         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1864         int idx, key_len, alg = ext->alg, set_key = 1;
1865
1866         /* Determine and validate the key index */
1867         idx = encoding->flags & IW_ENCODE_INDEX;
1868         if (idx) {
1869                 if (idx < 1 || idx > 4)
1870                         return -EINVAL;
1871                 idx--;
1872         } else
1873                 idx = priv->default_key;
1874
1875         if (encoding->flags & IW_ENCODE_DISABLED)
1876             alg = IW_ENCODE_ALG_NONE;
1877
1878         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1879                 priv->default_key = idx;
1880                 set_key = ext->key_len > 0 ? 1 : 0;
1881         }
1882
1883         if (set_key) {
1884                 /* Set the requested key first */
1885                 switch (alg) {
1886                 case IW_ENCODE_ALG_NONE:
1887                         priv->wep_is_on = 0;
1888                         priv->encryption_level = 0;
1889                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1890                         break;
1891                 case IW_ENCODE_ALG_WEP:
1892                         if (ext->key_len > 5) {
1893                                 priv->wep_key_len[idx] = 13;
1894                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1895                                 priv->encryption_level = 2;
1896                         } else if (ext->key_len > 0) {
1897                                 priv->wep_key_len[idx] = 5;
1898                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1899                                 priv->encryption_level = 1;
1900                         } else {
1901                                 return -EINVAL;
1902                         }
1903                         priv->wep_is_on = 1;
1904                         memset(priv->wep_keys[idx], 0, 13);
1905                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1906                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1907                         break;
1908                 default:
1909                         return -EINVAL;
1910                 }
1911         }
1912
1913         return -EINPROGRESS;
1914 }
1915
1916 static int atmel_get_encodeext(struct net_device *dev,
1917                             struct iw_request_info *info,
1918                             union iwreq_data *wrqu,
1919                             char *extra)
1920 {
1921         struct atmel_private *priv = netdev_priv(dev);
1922         struct iw_point *encoding = &wrqu->encoding;
1923         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1924         int idx, max_key_len;
1925
1926         max_key_len = encoding->length - sizeof(*ext);
1927         if (max_key_len < 0)
1928                 return -EINVAL;
1929
1930         idx = encoding->flags & IW_ENCODE_INDEX;
1931         if (idx) {
1932                 if (idx < 1 || idx > 4)
1933                         return -EINVAL;
1934                 idx--;
1935         } else
1936                 idx = priv->default_key;
1937
1938         encoding->flags = idx + 1;
1939         memset(ext, 0, sizeof(*ext));
1940
1941         if (!priv->wep_is_on) {
1942                 ext->alg = IW_ENCODE_ALG_NONE;
1943                 ext->key_len = 0;
1944                 encoding->flags |= IW_ENCODE_DISABLED;
1945         } else {
1946                 if (priv->encryption_level > 0)
1947                         ext->alg = IW_ENCODE_ALG_WEP;
1948                 else
1949                         return -EINVAL;
1950
1951                 ext->key_len = priv->wep_key_len[idx];
1952                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1953                 encoding->flags |= IW_ENCODE_ENABLED;
1954         }
1955
1956         return 0;
1957 }
1958
1959 static int atmel_set_auth(struct net_device *dev,
1960                                struct iw_request_info *info,
1961                                union iwreq_data *wrqu, char *extra)
1962 {
1963         struct atmel_private *priv = netdev_priv(dev);
1964         struct iw_param *param = &wrqu->param;
1965
1966         switch (param->flags & IW_AUTH_INDEX) {
1967         case IW_AUTH_WPA_VERSION:
1968         case IW_AUTH_CIPHER_PAIRWISE:
1969         case IW_AUTH_CIPHER_GROUP:
1970         case IW_AUTH_KEY_MGMT:
1971         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1972         case IW_AUTH_PRIVACY_INVOKED:
1973                 /*
1974                  * atmel does not use these parameters
1975                  */
1976                 break;
1977
1978         case IW_AUTH_DROP_UNENCRYPTED:
1979                 priv->exclude_unencrypted = param->value ? 1 : 0;
1980                 break;
1981
1982         case IW_AUTH_80211_AUTH_ALG: {
1983                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1984                                 priv->exclude_unencrypted = 1;
1985                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1986                                 priv->exclude_unencrypted = 0;
1987                         } else
1988                                 return -EINVAL;
1989                         break;
1990                 }
1991
1992         case IW_AUTH_WPA_ENABLED:
1993                 /* Silently accept disable of WPA */
1994                 if (param->value > 0)
1995                         return -EOPNOTSUPP;
1996                 break;
1997
1998         default:
1999                 return -EOPNOTSUPP;
2000         }
2001         return -EINPROGRESS;
2002 }
2003
2004 static int atmel_get_auth(struct net_device *dev,
2005                                struct iw_request_info *info,
2006                                union iwreq_data *wrqu, char *extra)
2007 {
2008         struct atmel_private *priv = netdev_priv(dev);
2009         struct iw_param *param = &wrqu->param;
2010
2011         switch (param->flags & IW_AUTH_INDEX) {
2012         case IW_AUTH_DROP_UNENCRYPTED:
2013                 param->value = priv->exclude_unencrypted;
2014                 break;
2015
2016         case IW_AUTH_80211_AUTH_ALG:
2017                 if (priv->exclude_unencrypted == 1)
2018                         param->value = IW_AUTH_ALG_SHARED_KEY;
2019                 else
2020                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2021                 break;
2022
2023         case IW_AUTH_WPA_ENABLED:
2024                 param->value = 0;
2025                 break;
2026
2027         default:
2028                 return -EOPNOTSUPP;
2029         }
2030         return 0;
2031 }
2032
2033
2034 static int atmel_get_name(struct net_device *dev,
2035                           struct iw_request_info *info,
2036                           char *cwrq,
2037                           char *extra)
2038 {
2039         strcpy(cwrq, "IEEE 802.11-DS");
2040         return 0;
2041 }
2042
2043 static int atmel_set_rate(struct net_device *dev,
2044                           struct iw_request_info *info,
2045                           struct iw_param *vwrq,
2046                           char *extra)
2047 {
2048         struct atmel_private *priv = netdev_priv(dev);
2049
2050         if (vwrq->fixed == 0) {
2051                 priv->tx_rate = 3;
2052                 priv->auto_tx_rate = 1;
2053         } else {
2054                 priv->auto_tx_rate = 0;
2055
2056                 /* Which type of value ? */
2057                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2058                         /* Setting by rate index */
2059                         priv->tx_rate = vwrq->value;
2060                 } else {
2061                 /* Setting by frequency value */
2062                         switch (vwrq->value) {
2063                         case  1000000:
2064                                 priv->tx_rate = 0;
2065                                 break;
2066                         case  2000000:
2067                                 priv->tx_rate = 1;
2068                                 break;
2069                         case  5500000:
2070                                 priv->tx_rate = 2;
2071                                 break;
2072                         case 11000000:
2073                                 priv->tx_rate = 3;
2074                                 break;
2075                         default:
2076                                 return -EINVAL;
2077                         }
2078                 }
2079         }
2080
2081         return -EINPROGRESS;
2082 }
2083
2084 static int atmel_set_mode(struct net_device *dev,
2085                           struct iw_request_info *info,
2086                           __u32 *uwrq,
2087                           char *extra)
2088 {
2089         struct atmel_private *priv = netdev_priv(dev);
2090
2091         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2092                 return -EINVAL;
2093
2094         priv->operating_mode = *uwrq;
2095         return -EINPROGRESS;
2096 }
2097
2098 static int atmel_get_mode(struct net_device *dev,
2099                           struct iw_request_info *info,
2100                           __u32 *uwrq,
2101                           char *extra)
2102 {
2103         struct atmel_private *priv = netdev_priv(dev);
2104
2105         *uwrq = priv->operating_mode;
2106         return 0;
2107 }
2108
2109 static int atmel_get_rate(struct net_device *dev,
2110                          struct iw_request_info *info,
2111                          struct iw_param *vwrq,
2112                          char *extra)
2113 {
2114         struct atmel_private *priv = netdev_priv(dev);
2115
2116         if (priv->auto_tx_rate) {
2117                 vwrq->fixed = 0;
2118                 vwrq->value = 11000000;
2119         } else {
2120                 vwrq->fixed = 1;
2121                 switch (priv->tx_rate) {
2122                 case 0:
2123                         vwrq->value =  1000000;
2124                         break;
2125                 case 1:
2126                         vwrq->value =  2000000;
2127                         break;
2128                 case 2:
2129                         vwrq->value =  5500000;
2130                         break;
2131                 case 3:
2132                         vwrq->value = 11000000;
2133                         break;
2134                 }
2135         }
2136         return 0;
2137 }
2138
2139 static int atmel_set_power(struct net_device *dev,
2140                            struct iw_request_info *info,
2141                            struct iw_param *vwrq,
2142                            char *extra)
2143 {
2144         struct atmel_private *priv = netdev_priv(dev);
2145         priv->power_mode = vwrq->disabled ? 0 : 1;
2146         return -EINPROGRESS;
2147 }
2148
2149 static int atmel_get_power(struct net_device *dev,
2150                            struct iw_request_info *info,
2151                            struct iw_param *vwrq,
2152                            char *extra)
2153 {
2154         struct atmel_private *priv = netdev_priv(dev);
2155         vwrq->disabled = priv->power_mode ? 0 : 1;
2156         vwrq->flags = IW_POWER_ON;
2157         return 0;
2158 }
2159
2160 static int atmel_set_retry(struct net_device *dev,
2161                            struct iw_request_info *info,
2162                            struct iw_param *vwrq,
2163                            char *extra)
2164 {
2165         struct atmel_private *priv = netdev_priv(dev);
2166
2167         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2168                 if (vwrq->flags & IW_RETRY_LONG)
2169                         priv->long_retry = vwrq->value;
2170                 else if (vwrq->flags & IW_RETRY_SHORT)
2171                         priv->short_retry = vwrq->value;
2172                 else {
2173                         /* No modifier : set both */
2174                         priv->long_retry = vwrq->value;
2175                         priv->short_retry = vwrq->value;
2176                 }
2177                 return -EINPROGRESS;
2178         }
2179
2180         return -EINVAL;
2181 }
2182
2183 static int atmel_get_retry(struct net_device *dev,
2184                            struct iw_request_info *info,
2185                            struct iw_param *vwrq,
2186                            char *extra)
2187 {
2188         struct atmel_private *priv = netdev_priv(dev);
2189
2190         vwrq->disabled = 0;      /* Can't be disabled */
2191
2192         /* Note : by default, display the short retry number */
2193         if (vwrq->flags & IW_RETRY_LONG) {
2194                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2195                 vwrq->value = priv->long_retry;
2196         } else {
2197                 vwrq->flags = IW_RETRY_LIMIT;
2198                 vwrq->value = priv->short_retry;
2199                 if (priv->long_retry != priv->short_retry)
2200                         vwrq->flags |= IW_RETRY_SHORT;
2201         }
2202
2203         return 0;
2204 }
2205
2206 static int atmel_set_rts(struct net_device *dev,
2207                          struct iw_request_info *info,
2208                          struct iw_param *vwrq,
2209                          char *extra)
2210 {
2211         struct atmel_private *priv = netdev_priv(dev);
2212         int rthr = vwrq->value;
2213
2214         if (vwrq->disabled)
2215                 rthr = 2347;
2216         if ((rthr < 0) || (rthr > 2347)) {
2217                 return -EINVAL;
2218         }
2219         priv->rts_threshold = rthr;
2220
2221         return -EINPROGRESS;            /* Call commit handler */
2222 }
2223
2224 static int atmel_get_rts(struct net_device *dev,
2225                          struct iw_request_info *info,
2226                          struct iw_param *vwrq,
2227                          char *extra)
2228 {
2229         struct atmel_private *priv = netdev_priv(dev);
2230
2231         vwrq->value = priv->rts_threshold;
2232         vwrq->disabled = (vwrq->value >= 2347);
2233         vwrq->fixed = 1;
2234
2235         return 0;
2236 }
2237
2238 static int atmel_set_frag(struct net_device *dev,
2239                           struct iw_request_info *info,
2240                           struct iw_param *vwrq,
2241                           char *extra)
2242 {
2243         struct atmel_private *priv = netdev_priv(dev);
2244         int fthr = vwrq->value;
2245
2246         if (vwrq->disabled)
2247                 fthr = 2346;
2248         if ((fthr < 256) || (fthr > 2346)) {
2249                 return -EINVAL;
2250         }
2251         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2252         priv->frag_threshold = fthr;
2253
2254         return -EINPROGRESS;            /* Call commit handler */
2255 }
2256
2257 static int atmel_get_frag(struct net_device *dev,
2258                           struct iw_request_info *info,
2259                           struct iw_param *vwrq,
2260                           char *extra)
2261 {
2262         struct atmel_private *priv = netdev_priv(dev);
2263
2264         vwrq->value = priv->frag_threshold;
2265         vwrq->disabled = (vwrq->value >= 2346);
2266         vwrq->fixed = 1;
2267
2268         return 0;
2269 }
2270
2271 static int atmel_set_freq(struct net_device *dev,
2272                           struct iw_request_info *info,
2273                           struct iw_freq *fwrq,
2274                           char *extra)
2275 {
2276         struct atmel_private *priv = netdev_priv(dev);
2277         int rc = -EINPROGRESS;          /* Call commit handler */
2278
2279         /* If setting by frequency, convert to a channel */
2280         if (fwrq->e == 1) {
2281                 int f = fwrq->m / 100000;
2282
2283                 /* Hack to fall through... */
2284                 fwrq->e = 0;
2285                 fwrq->m = ieee80211_freq_to_dsss_chan(f);
2286         }
2287         /* Setting by channel number */
2288         if ((fwrq->m > 1000) || (fwrq->e > 0))
2289                 rc = -EOPNOTSUPP;
2290         else {
2291                 int channel = fwrq->m;
2292                 if (atmel_validate_channel(priv, channel) == 0) {
2293                         priv->channel = channel;
2294                 } else {
2295                         rc = -EINVAL;
2296                 }
2297         }
2298         return rc;
2299 }
2300
2301 static int atmel_get_freq(struct net_device *dev,
2302                           struct iw_request_info *info,
2303                           struct iw_freq *fwrq,
2304                           char *extra)
2305 {
2306         struct atmel_private *priv = netdev_priv(dev);
2307
2308         fwrq->m = priv->channel;
2309         fwrq->e = 0;
2310         return 0;
2311 }
2312
2313 static int atmel_set_scan(struct net_device *dev,
2314                           struct iw_request_info *info,
2315                           struct iw_point *dwrq,
2316                           char *extra)
2317 {
2318         struct atmel_private *priv = netdev_priv(dev);
2319         unsigned long flags;
2320
2321         /* Note : you may have realised that, as this is a SET operation,
2322          * this is privileged and therefore a normal user can't
2323          * perform scanning.
2324          * This is not an error, while the device perform scanning,
2325          * traffic doesn't flow, so it's a perfect DoS...
2326          * Jean II */
2327
2328         if (priv->station_state == STATION_STATE_DOWN)
2329                 return -EAGAIN;
2330
2331         /* Timeout old surveys. */
2332         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2333                 priv->site_survey_state = SITE_SURVEY_IDLE;
2334         priv->last_survey = jiffies;
2335
2336         /* Initiate a scan command */
2337         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2338                 return -EBUSY;
2339
2340         del_timer_sync(&priv->management_timer);
2341         spin_lock_irqsave(&priv->irqlock, flags);
2342
2343         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2344         priv->fast_scan = 0;
2345         atmel_scan(priv, 0);
2346         spin_unlock_irqrestore(&priv->irqlock, flags);
2347
2348         return 0;
2349 }
2350
2351 static int atmel_get_scan(struct net_device *dev,
2352                           struct iw_request_info *info,
2353                           struct iw_point *dwrq,
2354                           char *extra)
2355 {
2356         struct atmel_private *priv = netdev_priv(dev);
2357         int i;
2358         char *current_ev = extra;
2359         struct iw_event iwe;
2360
2361         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2362                 return -EAGAIN;
2363
2364         for (i = 0; i < priv->BSS_list_entries; i++) {
2365                 iwe.cmd = SIOCGIWAP;
2366                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2367                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2368                 current_ev = iwe_stream_add_event(info, current_ev,
2369                                                   extra + IW_SCAN_MAX_DATA,
2370                                                   &iwe, IW_EV_ADDR_LEN);
2371
2372                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2373                 if (iwe.u.data.length > 32)
2374                         iwe.u.data.length = 32;
2375                 iwe.cmd = SIOCGIWESSID;
2376                 iwe.u.data.flags = 1;
2377                 current_ev = iwe_stream_add_point(info, current_ev,
2378                                                   extra + IW_SCAN_MAX_DATA,
2379                                                   &iwe, priv->BSSinfo[i].SSID);
2380
2381                 iwe.cmd = SIOCGIWMODE;
2382                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2383                 current_ev = iwe_stream_add_event(info, current_ev,
2384                                                   extra + IW_SCAN_MAX_DATA,
2385                                                   &iwe, IW_EV_UINT_LEN);
2386
2387                 iwe.cmd = SIOCGIWFREQ;
2388                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2389                 iwe.u.freq.e = 0;
2390                 current_ev = iwe_stream_add_event(info, current_ev,
2391                                                   extra + IW_SCAN_MAX_DATA,
2392                                                   &iwe, IW_EV_FREQ_LEN);
2393
2394                 /* Add quality statistics */
2395                 iwe.cmd = IWEVQUAL;
2396                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2397                 iwe.u.qual.qual  = iwe.u.qual.level;
2398                 /* iwe.u.qual.noise  = SOMETHING */
2399                 current_ev = iwe_stream_add_event(info, current_ev,
2400                                                   extra + IW_SCAN_MAX_DATA,
2401                                                   &iwe, IW_EV_QUAL_LEN);
2402
2403
2404                 iwe.cmd = SIOCGIWENCODE;
2405                 if (priv->BSSinfo[i].UsingWEP)
2406                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2407                 else
2408                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2409                 iwe.u.data.length = 0;
2410                 current_ev = iwe_stream_add_point(info, current_ev,
2411                                                   extra + IW_SCAN_MAX_DATA,
2412                                                   &iwe, NULL);
2413         }
2414
2415         /* Length of data */
2416         dwrq->length = (current_ev - extra);
2417         dwrq->flags = 0;
2418
2419         return 0;
2420 }
2421
2422 static int atmel_get_range(struct net_device *dev,
2423                            struct iw_request_info *info,
2424                            struct iw_point *dwrq,
2425                            char *extra)
2426 {
2427         struct atmel_private *priv = netdev_priv(dev);
2428         struct iw_range *range = (struct iw_range *) extra;
2429         int k, i, j;
2430
2431         dwrq->length = sizeof(struct iw_range);
2432         memset(range, 0, sizeof(struct iw_range));
2433         range->min_nwid = 0x0000;
2434         range->max_nwid = 0x0000;
2435         range->num_channels = 0;
2436         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2437                 if (priv->reg_domain == channel_table[j].reg_domain) {
2438                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2439                         break;
2440                 }
2441         if (range->num_channels != 0) {
2442                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2443                         range->freq[k].i = i; /* List index */
2444
2445                         /* Values in MHz -> * 10^5 * 10 */
2446                         range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2447                                             100000);
2448                         range->freq[k++].e = 1;
2449                 }
2450                 range->num_frequency = k;
2451         }
2452
2453         range->max_qual.qual = 100;
2454         range->max_qual.level = 100;
2455         range->max_qual.noise = 0;
2456         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2457
2458         range->avg_qual.qual = 50;
2459         range->avg_qual.level = 50;
2460         range->avg_qual.noise = 0;
2461         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2462
2463         range->sensitivity = 0;
2464
2465         range->bitrate[0] =  1000000;
2466         range->bitrate[1] =  2000000;
2467         range->bitrate[2] =  5500000;
2468         range->bitrate[3] = 11000000;
2469         range->num_bitrates = 4;
2470
2471         range->min_rts = 0;
2472         range->max_rts = 2347;
2473         range->min_frag = 256;
2474         range->max_frag = 2346;
2475
2476         range->encoding_size[0] = 5;
2477         range->encoding_size[1] = 13;
2478         range->num_encoding_sizes = 2;
2479         range->max_encoding_tokens = 4;
2480
2481         range->pmp_flags = IW_POWER_ON;
2482         range->pmt_flags = IW_POWER_ON;
2483         range->pm_capa = 0;
2484
2485         range->we_version_source = WIRELESS_EXT;
2486         range->we_version_compiled = WIRELESS_EXT;
2487         range->retry_capa = IW_RETRY_LIMIT ;
2488         range->retry_flags = IW_RETRY_LIMIT;
2489         range->r_time_flags = 0;
2490         range->min_retry = 1;
2491         range->max_retry = 65535;
2492
2493         return 0;
2494 }
2495
2496 static int atmel_set_wap(struct net_device *dev,
2497                          struct iw_request_info *info,
2498                          struct sockaddr *awrq,
2499                          char *extra)
2500 {
2501         struct atmel_private *priv = netdev_priv(dev);
2502         int i;
2503         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2504         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2505         unsigned long flags;
2506
2507         if (awrq->sa_family != ARPHRD_ETHER)
2508                 return -EINVAL;
2509
2510         if (!memcmp(any, awrq->sa_data, 6) ||
2511             !memcmp(off, awrq->sa_data, 6)) {
2512                 del_timer_sync(&priv->management_timer);
2513                 spin_lock_irqsave(&priv->irqlock, flags);
2514                 atmel_scan(priv, 1);
2515                 spin_unlock_irqrestore(&priv->irqlock, flags);
2516                 return 0;
2517         }
2518
2519         for (i = 0; i < priv->BSS_list_entries; i++) {
2520                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2521                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2522                                 return -EINVAL;
2523                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2524                                 return -EINVAL;
2525                         } else {
2526                                 del_timer_sync(&priv->management_timer);
2527                                 spin_lock_irqsave(&priv->irqlock, flags);
2528                                 atmel_join_bss(priv, i);
2529                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2530                                 return 0;
2531                         }
2532                 }
2533         }
2534
2535         return -EINVAL;
2536 }
2537
2538 static int atmel_config_commit(struct net_device *dev,
2539                                struct iw_request_info *info,    /* NULL */
2540                                void *zwrq,                      /* NULL */
2541                                char *extra)                     /* NULL */
2542 {
2543         return atmel_open(dev);
2544 }
2545
2546 static const iw_handler atmel_handler[] =
2547 {
2548         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2549         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2550         (iw_handler) NULL,                      /* SIOCSIWNWID */
2551         (iw_handler) NULL,                      /* SIOCGIWNWID */
2552         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2553         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2554         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2555         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2556         (iw_handler) NULL,                      /* SIOCSIWSENS */
2557         (iw_handler) NULL,                      /* SIOCGIWSENS */
2558         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2559         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2560         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2561         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2562         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2563         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2564         (iw_handler) NULL,                      /* SIOCSIWSPY */
2565         (iw_handler) NULL,                      /* SIOCGIWSPY */
2566         (iw_handler) NULL,                      /* -- hole -- */
2567         (iw_handler) NULL,                      /* -- hole -- */
2568         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2569         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2570         (iw_handler) NULL,                      /* -- hole -- */
2571         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2572         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2573         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2574         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2575         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2576         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2577         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2578         (iw_handler) NULL,                      /* -- hole -- */
2579         (iw_handler) NULL,                      /* -- hole -- */
2580         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2581         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2582         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2583         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2584         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2585         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2586         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2587         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2588         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2589         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2590         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2591         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2592         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2593         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2594         (iw_handler) NULL,                      /* -- hole -- */
2595         (iw_handler) NULL,                      /* -- hole -- */
2596         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2597         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2598         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2599         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2600         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2601         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2602         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2603 };
2604
2605 static const iw_handler atmel_private_handler[] =
2606 {
2607         NULL,                           /* SIOCIWFIRSTPRIV */
2608 };
2609
2610 typedef struct atmel_priv_ioctl {
2611         char id[32];
2612         unsigned char __user *data;
2613         unsigned short len;
2614 } atmel_priv_ioctl;
2615
2616 #define ATMELFWL        SIOCIWFIRSTPRIV
2617 #define ATMELIDIFC      ATMELFWL + 1
2618 #define ATMELRD         ATMELFWL + 2
2619 #define ATMELMAGIC 0x51807
2620 #define REGDOMAINSZ 20
2621
2622 static const struct iw_priv_args atmel_private_args[] = {
2623         {
2624                 .cmd = ATMELFWL,
2625                 .set_args = IW_PRIV_TYPE_BYTE
2626                                 | IW_PRIV_SIZE_FIXED
2627                                 | sizeof (atmel_priv_ioctl),
2628                 .get_args = IW_PRIV_TYPE_NONE,
2629                 .name = "atmelfwl"
2630         }, {
2631                 .cmd = ATMELIDIFC,
2632                 .set_args = IW_PRIV_TYPE_NONE,
2633                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2634                 .name = "atmelidifc"
2635         }, {
2636                 .cmd = ATMELRD,
2637                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2638                 .get_args = IW_PRIV_TYPE_NONE,
2639                 .name = "regdomain"
2640         },
2641 };
2642
2643 static const struct iw_handler_def atmel_handler_def = {
2644         .num_standard   = ARRAY_SIZE(atmel_handler),
2645         .num_private    = ARRAY_SIZE(atmel_private_handler),
2646         .num_private_args = ARRAY_SIZE(atmel_private_args),
2647         .standard       = (iw_handler *) atmel_handler,
2648         .private        = (iw_handler *) atmel_private_handler,
2649         .private_args   = (struct iw_priv_args *) atmel_private_args,
2650         .get_wireless_stats = atmel_get_wireless_stats
2651 };
2652
2653 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2654 {
2655         int i, rc = 0;
2656         struct atmel_private *priv = netdev_priv(dev);
2657         atmel_priv_ioctl com;
2658         struct iwreq *wrq = (struct iwreq *) rq;
2659         unsigned char *new_firmware;
2660         char domain[REGDOMAINSZ + 1];
2661
2662         switch (cmd) {
2663         case ATMELIDIFC:
2664                 wrq->u.param.value = ATMELMAGIC;
2665                 break;
2666
2667         case ATMELFWL:
2668                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2669                         rc = -EFAULT;
2670                         break;
2671                 }
2672
2673                 if (!capable(CAP_NET_ADMIN)) {
2674                         rc = -EPERM;
2675                         break;
2676                 }
2677
2678                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2679                         rc = -ENOMEM;
2680                         break;
2681                 }
2682
2683                 if (copy_from_user(new_firmware, com.data, com.len)) {
2684                         kfree(new_firmware);
2685                         rc = -EFAULT;
2686                         break;
2687                 }
2688
2689                 kfree(priv->firmware);
2690
2691                 priv->firmware = new_firmware;
2692                 priv->firmware_length = com.len;
2693                 strncpy(priv->firmware_id, com.id, 31);
2694                 priv->firmware_id[31] = '\0';
2695                 break;
2696
2697         case ATMELRD:
2698                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2699                         rc = -EFAULT;
2700                         break;
2701                 }
2702
2703                 if (!capable(CAP_NET_ADMIN)) {
2704                         rc = -EPERM;
2705                         break;
2706                 }
2707
2708                 domain[REGDOMAINSZ] = 0;
2709                 rc = -EINVAL;
2710                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2711                         /* strcasecmp doesn't exist in the library */
2712                         char *a = channel_table[i].name;
2713                         char *b = domain;
2714                         while (*a) {
2715                                 char c1 = *a++;
2716                                 char c2 = *b++;
2717                                 if (tolower(c1) != tolower(c2))
2718                                         break;
2719                         }
2720                         if (!*a && !*b) {
2721                                 priv->config_reg_domain = channel_table[i].reg_domain;
2722                                 rc = 0;
2723                         }
2724                 }
2725
2726                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2727                         rc = atmel_open(dev);
2728                 break;
2729
2730         default:
2731                 rc = -EOPNOTSUPP;
2732         }
2733
2734         return rc;
2735 }
2736
2737 struct auth_body {
2738         __le16 alg;
2739         __le16 trans_seq;
2740         __le16 status;
2741         u8 el_id;
2742         u8 chall_text_len;
2743         u8 chall_text[253];
2744 };
2745
2746 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2747 {
2748         int old_state = priv->station_state;
2749
2750         if (new_state == old_state)
2751                 return;
2752
2753         priv->station_state = new_state;
2754
2755         if (new_state == STATION_STATE_READY) {
2756                 netif_start_queue(priv->dev);
2757                 netif_carrier_on(priv->dev);
2758         }
2759
2760         if (old_state == STATION_STATE_READY) {
2761                 netif_carrier_off(priv->dev);
2762                 if (netif_running(priv->dev))
2763                         netif_stop_queue(priv->dev);
2764                 priv->last_beacon_timestamp = 0;
2765         }
2766 }
2767
2768 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2769 {
2770         struct {
2771                 u8 BSSID[6];
2772                 u8 SSID[MAX_SSID_LENGTH];
2773                 u8 scan_type;
2774                 u8 channel;
2775                 __le16 BSS_type;
2776                 __le16 min_channel_time;
2777                 __le16 max_channel_time;
2778                 u8 options;
2779                 u8 SSID_size;
2780         } cmd;
2781
2782         memset(cmd.BSSID, 0xff, 6);
2783
2784         if (priv->fast_scan) {
2785                 cmd.SSID_size = priv->SSID_size;
2786                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2787                 cmd.min_channel_time = cpu_to_le16(10);
2788                 cmd.max_channel_time = cpu_to_le16(50);
2789         } else {
2790                 priv->BSS_list_entries = 0;
2791                 cmd.SSID_size = 0;
2792                 cmd.min_channel_time = cpu_to_le16(10);
2793                 cmd.max_channel_time = cpu_to_le16(120);
2794         }
2795
2796         cmd.options = 0;
2797
2798         if (!specific_ssid)
2799                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2800
2801         cmd.channel = (priv->channel & 0x7f);
2802         cmd.scan_type = SCAN_TYPE_ACTIVE;
2803         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2804                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2805
2806         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2807
2808         /* This must come after all hardware access to avoid being messed up
2809            by stuff happening in interrupt context after we leave STATE_DOWN */
2810         atmel_enter_state(priv, STATION_STATE_SCANNING);
2811 }
2812
2813 static void join(struct atmel_private *priv, int type)
2814 {
2815         struct {
2816                 u8 BSSID[6];
2817                 u8 SSID[MAX_SSID_LENGTH];
2818                 u8 BSS_type; /* this is a short in a scan command - weird */
2819                 u8 channel;
2820                 __le16 timeout;
2821                 u8 SSID_size;
2822                 u8 reserved;
2823         } cmd;
2824
2825         cmd.SSID_size = priv->SSID_size;
2826         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2827         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2828         cmd.channel = (priv->channel & 0x7f);
2829         cmd.BSS_type = type;
2830         cmd.timeout = cpu_to_le16(2000);
2831
2832         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2833 }
2834
2835 static void start(struct atmel_private *priv, int type)
2836 {
2837         struct {
2838                 u8 BSSID[6];
2839                 u8 SSID[MAX_SSID_LENGTH];
2840                 u8 BSS_type;
2841                 u8 channel;
2842                 u8 SSID_size;
2843                 u8 reserved[3];
2844         } cmd;
2845
2846         cmd.SSID_size = priv->SSID_size;
2847         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2848         memcpy(cmd.BSSID, priv->BSSID, 6);
2849         cmd.BSS_type = type;
2850         cmd.channel = (priv->channel & 0x7f);
2851
2852         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2853 }
2854
2855 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2856                                 u8 channel)
2857 {
2858         int rejoin = 0;
2859         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2860                 SHORT_PREAMBLE : LONG_PREAMBLE;
2861
2862         if (priv->preamble != new) {
2863                 priv->preamble = new;
2864                 rejoin = 1;
2865                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2866         }
2867
2868         if (priv->channel != channel) {
2869                 priv->channel = channel;
2870                 rejoin = 1;
2871                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2872         }
2873
2874         if (rejoin) {
2875                 priv->station_is_associated = 0;
2876                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2877
2878                 if (priv->operating_mode == IW_MODE_INFRA)
2879                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2880                 else
2881                         join(priv, BSS_TYPE_AD_HOC);
2882         }
2883 }
2884
2885 static void send_authentication_request(struct atmel_private *priv, u16 system,
2886                                         u8 *challenge, int challenge_len)
2887 {
2888         struct ieee80211_hdr header;
2889         struct auth_body auth;
2890
2891         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2892         header.duration_id = cpu_to_le16(0x8000);
2893         header.seq_ctrl = 0;
2894         memcpy(header.addr1, priv->CurrentBSSID, 6);
2895         memcpy(header.addr2, priv->dev->dev_addr, 6);
2896         memcpy(header.addr3, priv->CurrentBSSID, 6);
2897
2898         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2899                 /* no WEP for authentication frames with TrSeqNo 1 */
2900                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2901
2902         auth.alg = cpu_to_le16(system);
2903
2904         auth.status = 0;
2905         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2906         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2907         priv->CurrentAuthentTransactionSeqNum += 2;
2908
2909         if (challenge_len != 0) {
2910                 auth.el_id = 16; /* challenge_text */
2911                 auth.chall_text_len = challenge_len;
2912                 memcpy(auth.chall_text, challenge, challenge_len);
2913                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2914         } else {
2915                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2916         }
2917 }
2918
2919 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2920 {
2921         u8 *ssid_el_p;
2922         int bodysize;
2923         struct ieee80211_hdr header;
2924         struct ass_req_format {
2925                 __le16 capability;
2926                 __le16 listen_interval;
2927                 u8 ap[6]; /* nothing after here directly accessible */
2928                 u8 ssid_el_id;
2929                 u8 ssid_len;
2930                 u8 ssid[MAX_SSID_LENGTH];
2931                 u8 sup_rates_el_id;
2932                 u8 sup_rates_len;
2933                 u8 rates[4];
2934         } body;
2935
2936         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2937                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2938         header.duration_id = cpu_to_le16(0x8000);
2939         header.seq_ctrl = 0;
2940
2941         memcpy(header.addr1, priv->CurrentBSSID, 6);
2942         memcpy(header.addr2, priv->dev->dev_addr, 6);
2943         memcpy(header.addr3, priv->CurrentBSSID, 6);
2944
2945         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2946         if (priv->wep_is_on)
2947                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2948         if (priv->preamble == SHORT_PREAMBLE)
2949                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2950
2951         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2952
2953         /* current AP address - only in reassoc frame */
2954         if (is_reassoc) {
2955                 memcpy(body.ap, priv->CurrentBSSID, 6);
2956                 ssid_el_p = (u8 *)&body.ssid_el_id;
2957                 bodysize = 18 + priv->SSID_size;
2958         } else {
2959                 ssid_el_p = (u8 *)&body.ap[0];
2960                 bodysize = 12 + priv->SSID_size;
2961         }
2962
2963         ssid_el_p[0] = WLAN_EID_SSID;
2964         ssid_el_p[1] = priv->SSID_size;
2965         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2966         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2967         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2968         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2969
2970         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2971 }
2972
2973 static int is_frame_from_current_bss(struct atmel_private *priv,
2974                                      struct ieee80211_hdr *header)
2975 {
2976         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2977                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2978         else
2979                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2980 }
2981
2982 static int retrieve_bss(struct atmel_private *priv)
2983 {
2984         int i;
2985         int max_rssi = -128;
2986         int max_index = -1;
2987
2988         if (priv->BSS_list_entries == 0)
2989                 return -1;
2990
2991         if (priv->connect_to_any_BSS) {
2992                 /* Select a BSS with the max-RSSI but of the same type and of
2993                    the same WEP mode and that it is not marked as 'bad' (i.e.
2994                    we had previously failed to connect to this BSS with the
2995                    settings that we currently use) */
2996                 priv->current_BSS = 0;
2997                 for (i = 0; i < priv->BSS_list_entries; i++) {
2998                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2999                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
3000                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
3001                             !(priv->BSSinfo[i].channel & 0x80)) {
3002                                 max_rssi = priv->BSSinfo[i].RSSI;
3003                                 priv->current_BSS = max_index = i;
3004                         }
3005                 }
3006                 return max_index;
3007         }
3008
3009         for (i = 0; i < priv->BSS_list_entries; i++) {
3010                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3011                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3012                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
3013                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3014                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
3015                                 max_rssi = priv->BSSinfo[i].RSSI;
3016                                 max_index = i;
3017                         }
3018                 }
3019         }
3020         return max_index;
3021 }
3022
3023 static void store_bss_info(struct atmel_private *priv,
3024                            struct ieee80211_hdr *header, u16 capability,
3025                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3026                            u8 *ssid, int is_beacon)
3027 {
3028         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3029         int i, index;
3030
3031         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3032                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
3033                         index = i;
3034
3035         /* If we process a probe and an entry from this BSS exists
3036            we will update the BSS entry with the info from this BSS.
3037            If we process a beacon we will only update RSSI */
3038
3039         if (index == -1) {
3040                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3041                         return;
3042                 index = priv->BSS_list_entries++;
3043                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3044                 priv->BSSinfo[index].RSSI = rssi;
3045         } else {
3046                 if (rssi > priv->BSSinfo[index].RSSI)
3047                         priv->BSSinfo[index].RSSI = rssi;
3048                 if (is_beacon)
3049                         return;
3050         }
3051
3052         priv->BSSinfo[index].channel = channel;
3053         priv->BSSinfo[index].beacon_period = beacon_period;
3054         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3055         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3056         priv->BSSinfo[index].SSIDsize = ssid_len;
3057
3058         if (capability & WLAN_CAPABILITY_IBSS)
3059                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3060         else if (capability & WLAN_CAPABILITY_ESS)
3061                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3062
3063         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3064                 SHORT_PREAMBLE : LONG_PREAMBLE;
3065 }
3066
3067 static void authenticate(struct atmel_private *priv, u16 frame_len)
3068 {
3069         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3070         u16 status = le16_to_cpu(auth->status);
3071         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3072         u16 system = le16_to_cpu(auth->alg);
3073
3074         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3075                 /* no WEP */
3076                 if (priv->station_was_associated) {
3077                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3078                         send_association_request(priv, 1);
3079                         return;
3080                 } else {
3081                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3082                         send_association_request(priv, 0);
3083                         return;
3084                 }
3085         }
3086
3087         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3088                 int should_associate = 0;
3089                 /* WEP */
3090                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3091                         return;
3092
3093                 if (system == WLAN_AUTH_OPEN) {
3094                         if (trans_seq_no == 0x0002) {
3095                                 should_associate = 1;
3096                         }
3097                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3098                         if (trans_seq_no == 0x0002 &&
3099                             auth->el_id == WLAN_EID_CHALLENGE) {
3100                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3101                                 return;
3102                         } else if (trans_seq_no == 0x0004) {
3103                                 should_associate = 1;
3104                         }
3105                 }
3106
3107                 if (should_associate) {
3108                         if (priv->station_was_associated) {
3109                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3110                                 send_association_request(priv, 1);
3111                                 return;
3112                         } else {
3113                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3114                                 send_association_request(priv, 0);
3115                                 return;
3116                         }
3117                 }
3118         }
3119
3120         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3121                 /* Flip back and forth between WEP auth modes until the max
3122                  * authentication tries has been exceeded.
3123                  */
3124                 if (system == WLAN_AUTH_OPEN) {
3125                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3126                         priv->exclude_unencrypted = 1;
3127                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3128                         return;
3129                 } else if (system == WLAN_AUTH_SHARED_KEY
3130                            && priv->wep_is_on) {
3131                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3132                         priv->exclude_unencrypted = 0;
3133                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3134                         return;
3135                 } else if (priv->connect_to_any_BSS) {
3136                         int bss_index;
3137
3138                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3139
3140                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3141                                 atmel_join_bss(priv, bss_index);
3142                                 return;
3143                         }
3144                 }
3145         }
3146
3147         priv->AuthenticationRequestRetryCnt = 0;
3148         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3149         priv->station_is_associated = 0;
3150 }
3151
3152 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3153 {
3154         struct ass_resp_format {
3155                 __le16 capability;
3156                 __le16 status;
3157                 __le16 ass_id;
3158                 u8 el_id;
3159                 u8 length;
3160                 u8 rates[4];
3161         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3162
3163         u16 status = le16_to_cpu(ass_resp->status);
3164         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3165         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3166
3167         union iwreq_data wrqu;
3168
3169         if (frame_len < 8 + rates_len)
3170                 return;
3171
3172         if (status == WLAN_STATUS_SUCCESS) {
3173                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3174                         priv->AssociationRequestRetryCnt = 0;
3175                 else
3176                         priv->ReAssociationRequestRetryCnt = 0;
3177
3178                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3179                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3180                 atmel_set_mib(priv, Phy_Mib_Type,
3181                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3182                 if (priv->power_mode == 0) {
3183                         priv->listen_interval = 1;
3184                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3185                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3186                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3187                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3188                 } else {
3189                         priv->listen_interval = 2;
3190                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3191                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3192                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3193                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3194                 }
3195
3196                 priv->station_is_associated = 1;
3197                 priv->station_was_associated = 1;
3198                 atmel_enter_state(priv, STATION_STATE_READY);
3199
3200                 /* Send association event to userspace */
3201                 wrqu.data.length = 0;
3202                 wrqu.data.flags = 0;
3203                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3204                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3205                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3206
3207                 return;
3208         }
3209
3210         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3211             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3212             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3213             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3214                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3215                 priv->AssociationRequestRetryCnt++;
3216                 send_association_request(priv, 0);
3217                 return;
3218         }
3219
3220         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3221             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3222             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3223             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3224                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3225                 priv->ReAssociationRequestRetryCnt++;
3226                 send_association_request(priv, 1);
3227                 return;
3228         }
3229
3230         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3231         priv->station_is_associated = 0;
3232
3233         if (priv->connect_to_any_BSS) {
3234                 int bss_index;
3235                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3236
3237                 if ((bss_index = retrieve_bss(priv)) != -1)
3238                         atmel_join_bss(priv, bss_index);
3239         }
3240 }
3241
3242 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3243 {
3244         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3245
3246         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3247         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3248
3249         /* The WPA stuff cares about the current AP address */
3250         if (priv->use_wpa)
3251                 build_wpa_mib(priv);
3252
3253         /* When switching to AdHoc turn OFF Power Save if needed */
3254
3255         if (bss->BSStype == IW_MODE_ADHOC &&
3256             priv->operating_mode != IW_MODE_ADHOC &&
3257             priv->power_mode) {
3258                 priv->power_mode = 0;
3259                 priv->listen_interval = 1;
3260                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3261                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3262                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3263                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3264         }
3265
3266         priv->operating_mode = bss->BSStype;
3267         priv->channel = bss->channel & 0x7f;
3268         priv->beacon_period = bss->beacon_period;
3269
3270         if (priv->preamble != bss->preamble) {
3271                 priv->preamble = bss->preamble;
3272                 atmel_set_mib8(priv, Local_Mib_Type,
3273                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3274         }
3275
3276         if (!priv->wep_is_on && bss->UsingWEP) {
3277                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3278                 priv->station_is_associated = 0;
3279                 return;
3280         }
3281
3282         if (priv->wep_is_on && !bss->UsingWEP) {
3283                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3284                 priv->station_is_associated = 0;
3285                 return;
3286         }
3287
3288         atmel_enter_state(priv, STATION_STATE_JOINNING);
3289
3290         if (priv->operating_mode == IW_MODE_INFRA)
3291                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3292         else
3293                 join(priv, BSS_TYPE_AD_HOC);
3294 }
3295
3296 static void restart_search(struct atmel_private *priv)
3297 {
3298         int bss_index;
3299
3300         if (!priv->connect_to_any_BSS) {
3301                 atmel_scan(priv, 1);
3302         } else {
3303                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3304
3305                 if ((bss_index = retrieve_bss(priv)) != -1)
3306                         atmel_join_bss(priv, bss_index);
3307                 else
3308                         atmel_scan(priv, 0);
3309         }
3310 }
3311
3312 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3313 {
3314         u8 old = priv->wstats.qual.level;
3315         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3316
3317         switch (priv->firmware_type) {
3318         case ATMEL_FW_TYPE_502E:
3319                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3320                 break;
3321         default:
3322                 break;
3323         }
3324
3325         rssi = rssi * 100 / max_rssi;
3326         if ((rssi + old) % 2)
3327                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3328         else
3329                 priv->wstats.qual.level = (rssi + old) / 2;
3330         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3331         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3332 }
3333
3334 static void atmel_smooth_qual(struct atmel_private *priv)
3335 {
3336         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3337         while (time_diff--) {
3338                 priv->last_qual += HZ;
3339                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3340                 priv->wstats.qual.qual +=
3341                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3342                 priv->beacons_this_sec = 0;
3343         }
3344         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3345         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3346 }
3347
3348 /* deals with incoming management frames. */
3349 static void atmel_management_frame(struct atmel_private *priv,
3350                                    struct ieee80211_hdr *header,
3351                                    u16 frame_len, u8 rssi)
3352 {
3353         u16 subtype;
3354
3355         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3356         switch (subtype) {
3357         case IEEE80211_STYPE_BEACON:
3358         case IEEE80211_STYPE_PROBE_RESP:
3359
3360                 /* beacon frame has multiple variable-length fields -
3361                    never let an engineer loose with a data structure design. */
3362                 {
3363                         struct beacon_format {
3364                                 __le64 timestamp;
3365                                 __le16 interval;
3366                                 __le16 capability;
3367                                 u8 ssid_el_id;
3368                                 u8 ssid_length;
3369                                 /* ssid here */
3370                                 u8 rates_el_id;
3371                                 u8 rates_length;
3372                                 /* rates here */
3373                                 u8 ds_el_id;
3374                                 u8 ds_length;
3375                                 /* ds here */
3376                         } *beacon = (struct beacon_format *)priv->rx_buf;
3377
3378                         u8 channel, rates_length, ssid_length;
3379                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3380                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3381                         u16 capability = le16_to_cpu(beacon->capability);
3382                         u8 *beaconp = priv->rx_buf;
3383                         ssid_length = beacon->ssid_length;
3384                         /* this blows chunks. */
3385                         if (frame_len < 14 || frame_len < ssid_length + 15)
3386                                 return;
3387                         rates_length = beaconp[beacon->ssid_length + 15];
3388                         if (frame_len < ssid_length + rates_length + 18)
3389                                 return;
3390                         if (ssid_length >  MAX_SSID_LENGTH)
3391                                 return;
3392                         channel = beaconp[ssid_length + rates_length + 18];
3393
3394                         if (priv->station_state == STATION_STATE_READY) {
3395                                 smooth_rssi(priv, rssi);
3396                                 if (is_frame_from_current_bss(priv, header)) {
3397                                         priv->beacons_this_sec++;
3398                                         atmel_smooth_qual(priv);
3399                                         if (priv->last_beacon_timestamp) {
3400                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3401                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3402                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3403                                                 if (beacons > 1)
3404                                                         priv->wstats.miss.beacon += beacons - 1;
3405                                         }
3406                                         priv->last_beacon_timestamp = timestamp;
3407                                         handle_beacon_probe(priv, capability, channel);
3408                                 }
3409                         }
3410
3411                         if (priv->station_state == STATION_STATE_SCANNING)
3412                                 store_bss_info(priv, header, capability,
3413                                                beacon_interval, channel, rssi,
3414                                                ssid_length,
3415                                                &beacon->rates_el_id,
3416                                                subtype == IEEE80211_STYPE_BEACON);
3417                 }
3418                 break;
3419
3420         case IEEE80211_STYPE_AUTH:
3421
3422                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3423                         authenticate(priv, frame_len);
3424
3425                 break;
3426
3427         case IEEE80211_STYPE_ASSOC_RESP:
3428         case IEEE80211_STYPE_REASSOC_RESP:
3429
3430                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3431                     priv->station_state == STATION_STATE_REASSOCIATING)
3432                         associate(priv, frame_len, subtype);
3433
3434                 break;
3435
3436         case IEEE80211_STYPE_DISASSOC:
3437                 if (priv->station_is_associated &&
3438                     priv->operating_mode == IW_MODE_INFRA &&
3439                     is_frame_from_current_bss(priv, header)) {
3440                         priv->station_was_associated = 0;
3441                         priv->station_is_associated = 0;
3442
3443                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3444                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3445                 }
3446
3447                 break;
3448
3449         case IEEE80211_STYPE_DEAUTH:
3450                 if (priv->operating_mode == IW_MODE_INFRA &&
3451                     is_frame_from_current_bss(priv, header)) {
3452                         priv->station_was_associated = 0;
3453
3454                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3455                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3456                 }
3457
3458                 break;
3459         }
3460 }
3461
3462 /* run when timer expires */
3463 static void atmel_management_timer(u_long a)
3464 {
3465         struct net_device *dev = (struct net_device *) a;
3466         struct atmel_private *priv = netdev_priv(dev);
3467         unsigned long flags;
3468
3469         /* Check if the card has been yanked. */
3470         if (priv->card && priv->present_callback &&
3471                 !(*priv->present_callback)(priv->card))
3472                 return;
3473
3474         spin_lock_irqsave(&priv->irqlock, flags);
3475
3476         switch (priv->station_state) {
3477
3478         case STATION_STATE_AUTHENTICATING:
3479                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3480                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3481                         priv->station_is_associated = 0;
3482                         priv->AuthenticationRequestRetryCnt = 0;
3483                         restart_search(priv);
3484                 } else {
3485                         int auth = WLAN_AUTH_OPEN;
3486                         priv->AuthenticationRequestRetryCnt++;
3487                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3488                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3489                         if (priv->wep_is_on && priv->exclude_unencrypted)
3490                                 auth = WLAN_AUTH_SHARED_KEY;
3491                         send_authentication_request(priv, auth, NULL, 0);
3492           }
3493           break;
3494
3495         case STATION_STATE_ASSOCIATING:
3496                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3497                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3498                         priv->station_is_associated = 0;
3499                         priv->AssociationRequestRetryCnt = 0;
3500                         restart_search(priv);
3501                 } else {
3502                         priv->AssociationRequestRetryCnt++;
3503                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3504                         send_association_request(priv, 0);
3505                 }
3506           break;
3507
3508         case STATION_STATE_REASSOCIATING:
3509                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3510                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3511                         priv->station_is_associated = 0;
3512                         priv->ReAssociationRequestRetryCnt = 0;
3513                         restart_search(priv);
3514                 } else {
3515                         priv->ReAssociationRequestRetryCnt++;
3516                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3517                         send_association_request(priv, 1);
3518                 }
3519                 break;
3520
3521         default:
3522                 break;
3523         }
3524
3525         spin_unlock_irqrestore(&priv->irqlock, flags);
3526 }
3527
3528 static void atmel_command_irq(struct atmel_private *priv)
3529 {
3530         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3531         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3532         int fast_scan;
3533         union iwreq_data wrqu;
3534
3535         if (status == CMD_STATUS_IDLE ||
3536             status == CMD_STATUS_IN_PROGRESS)
3537                 return;
3538
3539         switch (command) {
3540         case CMD_Start:
3541                 if (status == CMD_STATUS_COMPLETE) {
3542                         priv->station_was_associated = priv->station_is_associated;
3543                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3544                                       (u8 *)priv->CurrentBSSID, 6);
3545                         atmel_enter_state(priv, STATION_STATE_READY);
3546                 }
3547                 break;
3548
3549         case CMD_Scan:
3550                 fast_scan = priv->fast_scan;
3551                 priv->fast_scan = 0;
3552
3553                 if (status != CMD_STATUS_COMPLETE) {
3554                         atmel_scan(priv, 1);
3555                 } else {
3556                         int bss_index = retrieve_bss(priv);
3557                         int notify_scan_complete = 1;
3558                         if (bss_index != -1) {
3559                                 atmel_join_bss(priv, bss_index);
3560                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3561                                    priv->SSID_size != 0) {
3562                                 start(priv, BSS_TYPE_AD_HOC);
3563                         } else {
3564                                 priv->fast_scan = !fast_scan;
3565                                 atmel_scan(priv, 1);
3566                                 notify_scan_complete = 0;
3567                         }
3568                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3569                         if (notify_scan_complete) {
3570                                 wrqu.data.length = 0;
3571                                 wrqu.data.flags = 0;
3572                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3573                         }
3574                 }
3575                 break;
3576
3577         case CMD_SiteSurvey:
3578                 priv->fast_scan = 0;
3579
3580                 if (status != CMD_STATUS_COMPLETE)
3581                         return;
3582
3583                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3584                 if (priv->station_is_associated) {
3585                         atmel_enter_state(priv, STATION_STATE_READY);
3586                         wrqu.data.length = 0;
3587                         wrqu.data.flags = 0;
3588                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3589                 } else {
3590                         atmel_scan(priv, 1);
3591                 }
3592                 break;
3593
3594         case CMD_Join:
3595                 if (status == CMD_STATUS_COMPLETE) {
3596                         if (priv->operating_mode == IW_MODE_ADHOC) {
3597                                 priv->station_was_associated = priv->station_is_associated;
3598                                 atmel_enter_state(priv, STATION_STATE_READY);
3599                         } else {
3600                                 int auth = WLAN_AUTH_OPEN;
3601                                 priv->AuthenticationRequestRetryCnt = 0;
3602                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3603
3604                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3605                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3606                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3607                                         auth = WLAN_AUTH_SHARED_KEY;
3608                                 send_authentication_request(priv, auth, NULL, 0);
3609                         }
3610                         return;
3611                 }
3612
3613                 atmel_scan(priv, 1);
3614         }
3615 }
3616
3617 static int atmel_wakeup_firmware(struct atmel_private *priv)
3618 {
3619         struct host_info_struct *iface = &priv->host_info;
3620         u16 mr1, mr3;
3621         int i;
3622
3623         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3624                 atmel_set_gcr(priv->dev, GCR_REMAP);
3625
3626         /* wake up on-board processor */
3627         atmel_clear_gcr(priv->dev, 0x0040);
3628         atmel_write16(priv->dev, BSR, BSS_SRAM);
3629
3630         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3631                 mdelay(100);
3632
3633         /* and wait for it */
3634         for (i = LOOP_RETRY_LIMIT; i; i--) {
3635                 mr1 = atmel_read16(priv->dev, MR1);
3636                 mr3 = atmel_read16(priv->dev, MR3);
3637
3638                 if (mr3 & MAC_BOOT_COMPLETE)
3639                         break;
3640                 if (mr1 & MAC_BOOT_COMPLETE &&
3641                     priv->bus_type == BUS_TYPE_PCCARD)
3642                         break;
3643         }
3644
3645         if (i == 0) {
3646                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3647                 return -EIO;
3648         }
3649
3650         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3651                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3652                 return -ENODEV;
3653         }
3654
3655         /* now check for completion of MAC initialization through
3656            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3657            MAC initialization, check completion status, set interrupt mask,
3658            enables interrupts and calls Tx and Rx initialization functions */
3659
3660         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3661
3662         for (i = LOOP_RETRY_LIMIT; i; i--) {
3663                 mr1 = atmel_read16(priv->dev, MR1);
3664                 mr3 = atmel_read16(priv->dev, MR3);
3665
3666                 if (mr3 & MAC_INIT_COMPLETE)
3667                         break;
3668                 if (mr1 & MAC_INIT_COMPLETE &&
3669                     priv->bus_type == BUS_TYPE_PCCARD)
3670                         break;
3671         }
3672
3673         if (i == 0) {
3674                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3675                                 priv->dev->name);
3676                 return -EIO;
3677         }
3678
3679         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3680         if ((mr3 & MAC_INIT_COMPLETE) &&
3681             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3682                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3683                 return -EIO;
3684         }
3685         if ((mr1 & MAC_INIT_COMPLETE) &&
3686             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3687                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3688                 return -EIO;
3689         }
3690
3691         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3692                            priv->host_info_base, sizeof(*iface));
3693
3694         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3695         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3696         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3697         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3698         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3699         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3700         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3701         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3702         iface->build_version = le16_to_cpu(iface->build_version);
3703         iface->command_pos = le16_to_cpu(iface->command_pos);
3704         iface->major_version = le16_to_cpu(iface->major_version);
3705         iface->minor_version = le16_to_cpu(iface->minor_version);
3706         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3707         iface->mac_status = le16_to_cpu(iface->mac_status);
3708
3709         return 0;
3710 }
3711
3712 /* determine type of memory and MAC address */
3713 static int probe_atmel_card(struct net_device *dev)
3714 {
3715         int rc = 0;
3716         struct atmel_private *priv = netdev_priv(dev);
3717
3718         /* reset pccard */
3719         if (priv->bus_type == BUS_TYPE_PCCARD)
3720                 atmel_write16(dev, GCR, 0x0060);
3721
3722         atmel_write16(dev, GCR, 0x0040);
3723         mdelay(500);
3724
3725         if (atmel_read16(dev, MR2) == 0) {
3726                 /* No stored firmware so load a small stub which just
3727                    tells us the MAC address */
3728                 int i;
3729                 priv->card_type = CARD_TYPE_EEPROM;
3730                 atmel_write16(dev, BSR, BSS_IRAM);
3731                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3732                 atmel_set_gcr(dev, GCR_REMAP);
3733                 atmel_clear_gcr(priv->dev, 0x0040);
3734                 atmel_write16(dev, BSR, BSS_SRAM);
3735                 for (i = LOOP_RETRY_LIMIT; i; i--)
3736                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3737                                 break;
3738                 if (i == 0) {
3739                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3740                 } else {
3741                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3742                         /* got address, now squash it again until the network
3743                            interface is opened */
3744                         if (priv->bus_type == BUS_TYPE_PCCARD)
3745                                 atmel_write16(dev, GCR, 0x0060);
3746                         atmel_write16(dev, GCR, 0x0040);
3747                         rc = 1;
3748                 }
3749         } else if (atmel_read16(dev, MR4) == 0) {
3750                 /* Mac address easy in this case. */
3751                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3752                 atmel_write16(dev,  BSR, 1);
3753                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3754                 atmel_write16(dev,  BSR, 0x200);
3755                 rc = 1;
3756         } else {
3757                 /* Standard firmware in flash, boot it up and ask
3758                    for the Mac Address */
3759                 priv->card_type = CARD_TYPE_SPI_FLASH;
3760                 if (atmel_wakeup_firmware(priv) == 0) {
3761                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3762
3763                         /* got address, now squash it again until the network
3764                            interface is opened */
3765                         if (priv->bus_type == BUS_TYPE_PCCARD)
3766                                 atmel_write16(dev, GCR, 0x0060);
3767                         atmel_write16(dev, GCR, 0x0040);
3768                         rc = 1;
3769                 }
3770         }
3771
3772         if (rc) {
3773                 if (dev->dev_addr[0] == 0xFF) {
3774                         static const u8 default_mac[] = {
3775                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3776                         };
3777                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3778                         memcpy(dev->dev_addr, default_mac, 6);
3779                 }
3780         }
3781
3782         return rc;
3783 }
3784
3785 /* Move the encyption information on the MIB structure.
3786    This routine is for the pre-WPA firmware: later firmware has
3787    a different format MIB and a different routine. */
3788 static void build_wep_mib(struct atmel_private *priv)
3789 {
3790         struct { /* NB this is matched to the hardware, don't change. */
3791                 u8 wep_is_on;
3792                 u8 default_key; /* 0..3 */
3793                 u8 reserved;
3794                 u8 exclude_unencrypted;
3795
3796                 u32 WEPICV_error_count;
3797                 u32 WEP_excluded_count;
3798
3799                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3800                 u8 encryption_level; /* 0, 1, 2 */
3801                 u8 reserved2[3];
3802         } mib;
3803         int i;
3804
3805         mib.wep_is_on = priv->wep_is_on;
3806         if (priv->wep_is_on) {
3807                 if (priv->wep_key_len[priv->default_key] > 5)
3808                         mib.encryption_level = 2;
3809                 else
3810                         mib.encryption_level = 1;
3811         } else {
3812                 mib.encryption_level = 0;
3813         }
3814
3815         mib.default_key = priv->default_key;
3816         mib.exclude_unencrypted = priv->exclude_unencrypted;
3817
3818         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3819                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3820
3821         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3822 }
3823
3824 static void build_wpa_mib(struct atmel_private *priv)
3825 {
3826         /* This is for the later (WPA enabled) firmware. */
3827
3828         struct { /* NB this is matched to the hardware, don't change. */
3829                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3830                 u8 receiver_address[6];
3831                 u8 wep_is_on;
3832                 u8 default_key; /* 0..3 */
3833                 u8 group_key;
3834                 u8 exclude_unencrypted;
3835                 u8 encryption_type;
3836                 u8 reserved;
3837
3838                 u32 WEPICV_error_count;
3839                 u32 WEP_excluded_count;
3840
3841                 u8 key_RSC[4][8];
3842         } mib;
3843
3844         int i;
3845
3846         mib.wep_is_on = priv->wep_is_on;
3847         mib.exclude_unencrypted = priv->exclude_unencrypted;
3848         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3849
3850         /* zero all the keys before adding in valid ones. */
3851         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3852
3853         if (priv->wep_is_on) {
3854                 /* There's a comment in the Atmel code to the effect that this
3855                    is only valid when still using WEP, it may need to be set to
3856                    something to use WPA */
3857                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3858
3859                 mib.default_key = mib.group_key = 255;
3860                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3861                         if (priv->wep_key_len[i] > 0) {
3862                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3863                                 if (i == priv->default_key) {
3864                                         mib.default_key = i;
3865                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3866                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3867                                 } else {
3868                                         mib.group_key = i;
3869                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3870                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3871                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3872                                 }
3873                         }
3874                 }
3875                 if (mib.default_key == 255)
3876                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3877                 if (mib.group_key == 255)
3878                         mib.group_key = mib.default_key;
3879
3880         }
3881
3882         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3883 }
3884
3885 static int reset_atmel_card(struct net_device *dev)
3886 {
3887         /* do everything necessary to wake up the hardware, including
3888            waiting for the lightning strike and throwing the knife switch....
3889
3890            set all the Mib values which matter in the card to match
3891            their settings in the atmel_private structure. Some of these
3892            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3893            can only be changed by tearing down the world and coming back through
3894            here.
3895
3896            This routine is also responsible for initialising some
3897            hardware-specific fields in the atmel_private structure,
3898            including a copy of the firmware's hostinfo structure
3899            which is the route into the rest of the firmware datastructures. */
3900
3901         struct atmel_private *priv = netdev_priv(dev);
3902         u8 configuration;
3903         int old_state = priv->station_state;
3904         int err = 0;
3905
3906         /* data to add to the firmware names, in priority order
3907            this implemenents firmware versioning */
3908
3909         static char *firmware_modifier[] = {
3910                 "-wpa",
3911                 "",
3912                 NULL
3913         };
3914
3915         /* reset pccard */
3916         if (priv->bus_type == BUS_TYPE_PCCARD)
3917                 atmel_write16(priv->dev, GCR, 0x0060);
3918
3919         /* stop card , disable interrupts */
3920         atmel_write16(priv->dev, GCR, 0x0040);
3921
3922         if (priv->card_type == CARD_TYPE_EEPROM) {
3923                 /* copy in firmware if needed */
3924                 const struct firmware *fw_entry = NULL;
3925                 const unsigned char *fw;
3926                 int len = priv->firmware_length;
3927                 if (!(fw = priv->firmware)) {
3928                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3929                                 if (strlen(priv->firmware_id) == 0) {
3930                                         printk(KERN_INFO
3931                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3932                                                dev->name);
3933                                         printk(KERN_INFO
3934                                                "%s: if not, use the firmware= module parameter.\n",
3935                                                dev->name);
3936                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3937                                 }
3938                                 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3939                                 if (err != 0) {
3940                                         printk(KERN_ALERT
3941                                                "%s: firmware %s is missing, cannot continue.\n",
3942                                                dev->name, priv->firmware_id);
3943                                         return err;
3944                                 }
3945                         } else {
3946                                 int fw_index = 0;
3947                                 int success = 0;
3948
3949                                 /* get firmware filename entry based on firmware type ID */
3950                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3951                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3952                                         fw_index++;
3953
3954                                 /* construct the actual firmware file name */
3955                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3956                                         int i;
3957                                         for (i = 0; firmware_modifier[i]; i++) {
3958                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3959                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3960                                                 priv->firmware_id[31] = '\0';
3961                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3962                                                         success = 1;
3963                                                         break;
3964                                                 }
3965                                         }
3966                                 }
3967                                 if (!success) {
3968                                         printk(KERN_ALERT
3969                                                "%s: firmware %s is missing, cannot start.\n",
3970                                                dev->name, priv->firmware_id);
3971                                         priv->firmware_id[0] = '\0';
3972                                         return -ENOENT;
3973                                 }
3974                         }
3975
3976                         fw = fw_entry->data;
3977                         len = fw_entry->size;
3978                 }
3979
3980                 if (len <= 0x6000) {
3981                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3982                         atmel_copy_to_card(priv->dev, 0, fw, len);
3983                         atmel_set_gcr(priv->dev, GCR_REMAP);
3984                 } else {
3985                         /* Remap */
3986                         atmel_set_gcr(priv->dev, GCR_REMAP);
3987                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3988                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3989                         atmel_write16(priv->dev, BSR, 0x2ff);
3990                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3991                 }
3992
3993                 if (fw_entry)
3994                         release_firmware(fw_entry);
3995         }
3996
3997         err = atmel_wakeup_firmware(priv);
3998         if (err != 0)
3999                 return err;
4000
4001         /* Check the version and set the correct flag for wpa stuff,
4002            old and new firmware is incompatible.
4003            The pre-wpa 3com firmware reports major version 5,
4004            the wpa 3com firmware is major version 4 and doesn't need
4005            the 3com broken-ness filter. */
4006         priv->use_wpa = (priv->host_info.major_version == 4);
4007         priv->radio_on_broken = (priv->host_info.major_version == 5);
4008
4009         /* unmask all irq sources */
4010         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
4011
4012         /* int Tx system and enable Tx */
4013         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4014         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4015         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4016         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4017
4018         priv->tx_desc_free = priv->host_info.tx_desc_count;
4019         priv->tx_desc_head = 0;
4020         priv->tx_desc_tail = 0;
4021         priv->tx_desc_previous = 0;
4022         priv->tx_free_mem = priv->host_info.tx_buff_size;
4023         priv->tx_buff_head = 0;
4024         priv->tx_buff_tail = 0;
4025
4026         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4027         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4028                                    configuration | FUNC_CTRL_TxENABLE);
4029
4030         /* init Rx system and enable */
4031         priv->rx_desc_head = 0;
4032
4033         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4034         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4035                                    configuration | FUNC_CTRL_RxENABLE);
4036
4037         if (!priv->radio_on_broken) {
4038                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4039                     CMD_STATUS_REJECTED_RADIO_OFF) {
4040                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
4041                                dev->name);
4042                         return -EIO;
4043                 }
4044         }
4045
4046         /* set up enough MIB values to run. */
4047         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4048         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4049         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4050         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4051         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4052         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4053         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4054         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4055                       priv->dev->dev_addr, 6);
4056         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4057         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4058         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4059         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4060         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4061         if (priv->use_wpa)
4062                 build_wpa_mib(priv);
4063         else
4064                 build_wep_mib(priv);
4065
4066         if (old_state == STATION_STATE_READY) {
4067                 union iwreq_data wrqu;
4068
4069                 wrqu.data.length = 0;
4070                 wrqu.data.flags = 0;
4071                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4072                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4073                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4074         }
4075
4076         return 0;
4077 }
4078
4079 static void atmel_send_command(struct atmel_private *priv, int command,
4080                                void *cmd, int cmd_size)
4081 {
4082         if (cmd)
4083                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4084                                    cmd, cmd_size);
4085
4086         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4087         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4088 }
4089
4090 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4091                                    void *cmd, int cmd_size)
4092 {
4093         int i, status;
4094
4095         atmel_send_command(priv, command, cmd, cmd_size);
4096
4097         for (i = 5000; i; i--) {
4098                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4099                 if (status != CMD_STATUS_IDLE &&
4100                     status != CMD_STATUS_IN_PROGRESS)
4101                         break;
4102                 udelay(20);
4103         }
4104
4105         if (i == 0) {
4106                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4107                 status =  CMD_STATUS_HOST_ERROR;
4108         } else {
4109                 if (command != CMD_EnableRadio)
4110                         status = CMD_STATUS_COMPLETE;
4111         }
4112
4113         return status;
4114 }
4115
4116 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4117 {
4118         struct get_set_mib m;
4119         m.type = type;
4120         m.size = 1;
4121         m.index = index;
4122
4123         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4124         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4125 }
4126
4127 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4128 {
4129         struct get_set_mib m;
4130         m.type = type;
4131         m.size = 1;
4132         m.index = index;
4133         m.data[0] = data;
4134
4135         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4136 }
4137
4138 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4139                             u16 data)
4140 {
4141         struct get_set_mib m;
4142         m.type = type;
4143         m.size = 2;
4144         m.index = index;
4145         m.data[0] = data;
4146         m.data[1] = data >> 8;
4147
4148         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4149 }
4150
4151 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4152                           u8 *data, int data_len)
4153 {
4154         struct get_set_mib m;
4155         m.type = type;
4156         m.size = data_len;
4157         m.index = index;
4158
4159         if (data_len > MIB_MAX_DATA_BYTES)
4160                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4161
4162         memcpy(m.data, data, data_len);
4163         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4164 }
4165
4166 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4167                           u8 *data, int data_len)
4168 {
4169         struct get_set_mib m;
4170         m.type = type;
4171         m.size = data_len;
4172         m.index = index;
4173
4174         if (data_len > MIB_MAX_DATA_BYTES)
4175                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4176
4177         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4178         atmel_copy_to_host(priv->dev, data,
4179                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4180 }
4181
4182 static void atmel_writeAR(struct net_device *dev, u16 data)
4183 {
4184         int i;
4185         outw(data, dev->base_addr + AR);
4186         /* Address register appears to need some convincing..... */
4187         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4188                 outw(data, dev->base_addr + AR);
4189 }
4190
4191 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4192                                const unsigned char *src, u16 len)
4193 {
4194         int i;
4195         atmel_writeAR(dev, dest);
4196         if (dest % 2) {
4197                 atmel_write8(dev, DR, *src);
4198                 src++; len--;
4199         }
4200         for (i = len; i > 1 ; i -= 2) {
4201                 u8 lb = *src++;
4202                 u8 hb = *src++;
4203                 atmel_write16(dev, DR, lb | (hb << 8));
4204         }
4205         if (i)
4206                 atmel_write8(dev, DR, *src);
4207 }
4208
4209 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4210                                u16 src, u16 len)
4211 {
4212         int i;
4213         atmel_writeAR(dev, src);
4214         if (src % 2) {
4215                 *dest = atmel_read8(dev, DR);
4216                 dest++; len--;
4217         }
4218         for (i = len; i > 1 ; i -= 2) {
4219                 u16 hw = atmel_read16(dev, DR);
4220                 *dest++ = hw;
4221                 *dest++ = hw >> 8;
4222         }
4223         if (i)
4224                 *dest = atmel_read8(dev, DR);
4225 }
4226
4227 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4228 {
4229         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4230 }
4231
4232 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4233 {
4234         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4235 }
4236
4237 static int atmel_lock_mac(struct atmel_private *priv)
4238 {
4239         int i, j = 20;
4240  retry:
4241         for (i = 5000; i; i--) {
4242                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4243                         break;
4244                 udelay(20);
4245         }
4246
4247         if (!i)
4248                 return 0; /* timed out */
4249
4250         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4251         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4252                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4253                 if (!j--)
4254                         return 0; /* timed out */
4255                 goto retry;
4256         }
4257
4258         return 1;
4259 }
4260
4261 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4262 {
4263         atmel_writeAR(priv->dev, pos);
4264         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4265         atmel_write16(priv->dev, DR, data >> 16);
4266 }
4267
4268 /***************************************************************************/
4269 /* There follows the source form of the MAC address reading firmware       */
4270 /***************************************************************************/
4271 #if 0
4272
4273 /* Copyright 2003 Matthew T. Russotto                                      */
4274 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4275 /* included in "atmel wireless lan drivers" package                        */
4276 /**
4277     This file is part of net.russotto.AtmelMACFW, hereto referred to
4278     as AtmelMACFW
4279
4280     AtmelMACFW is free software; you can redistribute it and/or modify
4281     it under the terms of the GNU General Public License version 2
4282     as published by the Free Software Foundation.
4283
4284     AtmelMACFW is distributed in the hope that it will be useful,
4285     but WITHOUT ANY WARRANTY; without even the implied warranty of
4286     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4287     GNU General Public License for more details.
4288
4289     You should have received a copy of the GNU General Public License
4290     along with AtmelMACFW; if not, write to the Free Software
4291     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4292
4293 ****************************************************************************/
4294 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4295 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4296 /* It only works on SPI EEPROM versions of the card.                       */
4297
4298 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4299 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4300 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4301 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4302 /* MR4, for investigational purposes (maybe we can determine chip type     */
4303 /* from that?)                                                             */
4304
4305         .org 0
4306     .set MRBASE, 0x8000000
4307         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4308         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4309         .set SRAM_BASE,  0x02000000
4310         .set SP_BASE,    0x0F300000
4311         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4312         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4313         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4314         .set STACK_BASE, 0x5600
4315         .set SP_SR, 0x10
4316         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4317         .set SP_RDRF, 1 /* status register bit -- RDR full */
4318         .set SP_SWRST, 0x80
4319         .set SP_SPIEN, 0x1
4320         .set SP_CR, 0   /* control register */
4321         .set SP_MR, 4   /* mode register */
4322         .set SP_RDR, 0x08 /* Read Data Register */
4323         .set SP_TDR, 0x0C /* Transmit Data Register */
4324         .set SP_CSR0, 0x30 /* chip select registers */
4325         .set SP_CSR1, 0x34
4326         .set SP_CSR2, 0x38
4327         .set SP_CSR3, 0x3C
4328         .set NVRAM_CMD_RDSR, 5 /* read status register */
4329         .set NVRAM_CMD_READ, 3 /* read data */
4330         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4331         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4332                                   serial output, since SO is normally high.  But it
4333                                   does cause 8 clock cycles and thus 8 bits to be
4334                                   clocked in to the chip.  See Atmel's SPI
4335                                   controller (e.g. AT91M55800) timing and 4K
4336                                   SPI EEPROM manuals */
4337
4338         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4339         .set NVRAM_IMAGE, 0x02000200
4340         .set NVRAM_LENGTH, 0x0200
4341         .set MAC_ADDRESS_MIB, SRAM_BASE
4342         .set MAC_ADDRESS_LENGTH, 6
4343         .set MAC_BOOT_FLAG, 0x10
4344         .set MR1, 0
4345         .set MR2, 4
4346         .set MR3, 8
4347         .set MR4, 0xC
4348 RESET_VECTOR:
4349         b RESET_HANDLER
4350 UNDEF_VECTOR:
4351         b HALT1
4352 SWI_VECTOR:
4353         b HALT1
4354 IABORT_VECTOR:
4355         b HALT1
4356 DABORT_VECTOR:
4357 RESERVED_VECTOR:
4358         b HALT1
4359 IRQ_VECTOR:
4360         b HALT1
4361 FIQ_VECTOR:
4362         b HALT1
4363 HALT1:  b HALT1
4364 RESET_HANDLER:
4365         mov     r0, #CPSR_INITIAL
4366         msr     CPSR_c, r0      /* This is probably unnecessary */
4367
4368 /* I'm guessing this is initializing clock generator electronics for SPI */
4369         ldr     r0, =SPI_CGEN_BASE
4370         mov     r1, #0
4371         mov     r1, r1, lsl #3
4372         orr     r1, r1, #0
4373         str     r1, [r0]
4374         ldr     r1, [r0, #28]
4375         bic     r1, r1, #16
4376         str     r1, [r0, #28]
4377         mov     r1, #1
4378         str     r1, [r0, #8]
4379
4380         ldr     r0, =MRBASE
4381         mov     r1, #0
4382         strh    r1, [r0, #MR1]
4383         strh    r1, [r0, #MR2]
4384         strh    r1, [r0, #MR3]
4385         strh    r1, [r0, #MR4]
4386
4387         mov     sp, #STACK_BASE
4388         bl      SP_INIT
4389         mov     r0, #10
4390         bl      DELAY9
4391         bl      GET_MAC_ADDR
4392         bl      GET_WHOLE_NVRAM
4393         ldr     r0, =MRBASE
4394         ldr     r1, =MAC_ADDRESS_MIB
4395         strh    r1, [r0, #MR2]
4396         ldr     r1, =NVRAM_IMAGE
4397         strh    r1, [r0, #MR4]
4398         mov     r1, #MAC_BOOT_FLAG
4399         strh    r1, [r0, #MR3]
4400 HALT2:  b HALT2
4401 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4402 GET_WHOLE_NVRAM:
4403         stmdb   sp!, {lr}
4404         mov     r2, #0 /* 0th bytes of NVRAM */
4405         mov     r3, #NVRAM_LENGTH
4406         mov     r1, #0          /* not used in routine */
4407         ldr     r0, =NVRAM_IMAGE
4408         bl      NVRAM_XFER
4409         ldmia   sp!, {lr}
4410         bx      lr
4411 .endfunc
4412
4413 .func Get_MAC_Addr, GET_MAC_ADDR
4414 GET_MAC_ADDR:
4415         stmdb   sp!, {lr}
4416         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4417         mov     r3, #MAC_ADDRESS_LENGTH
4418         mov     r1, #0          /* not used in routine */
4419         ldr     r0, =MAC_ADDRESS_MIB
4420         bl      NVRAM_XFER
4421         ldmia   sp!, {lr}
4422         bx      lr
4423 .endfunc
4424 .ltorg
4425 .func Delay9, DELAY9
4426 DELAY9:
4427         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4428 DELAYLOOP:
4429         beq     DELAY9_done
4430         subs    r0, r0, #1
4431         b       DELAYLOOP
4432 DELAY9_done:
4433         bx      lr
4434 .endfunc
4435
4436 .func SP_Init, SP_INIT
4437 SP_INIT:
4438         mov     r1, #SP_SWRST
4439         ldr     r0, =SP_BASE
4440         str     r1, [r0, #SP_CR] /* reset the SPI */
4441         mov     r1, #0
4442         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4443         mov     r1, #SP_SPIEN
4444         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4445         str     r1, [r0, #SP_CR] /* enable the SPI */
4446
4447 /*  My guess would be this turns on the SPI clock */
4448         ldr     r3, =SPI_CGEN_BASE
4449         ldr     r1, [r3, #28]
4450         orr     r1, r1, #0x2000
4451         str     r1, [r3, #28]
4452
4453         ldr     r1, =0x2000c01
4454         str     r1, [r0, #SP_CSR0]
4455         ldr     r1, =0x2000201
4456         str     r1, [r0, #SP_CSR1]
4457         str     r1, [r0, #SP_CSR2]
4458         str     r1, [r0, #SP_CSR3]
4459         ldr     r1, [r0, #SP_SR]
4460         ldr     r0, [r0, #SP_RDR]
4461         bx      lr
4462 .endfunc
4463 .func NVRAM_Init, NVRAM_INIT
4464 NVRAM_INIT:
4465         ldr     r1, =SP_BASE
4466         ldr     r0, [r1, #SP_RDR]
4467         mov     r0, #NVRAM_CMD_RDSR
4468         str     r0, [r1, #SP_TDR]
4469 SP_loop1:
4470         ldr     r0, [r1, #SP_SR]
4471         tst     r0, #SP_TDRE
4472         beq     SP_loop1
4473
4474         mov     r0, #SPI_8CLOCKS
4475         str     r0, [r1, #SP_TDR]
4476 SP_loop2:
4477         ldr     r0, [r1, #SP_SR]
4478         tst     r0, #SP_TDRE
4479         beq     SP_loop2
4480
4481         ldr     r0, [r1, #SP_RDR]
4482 SP_loop3:
4483         ldr     r0, [r1, #SP_SR]
4484         tst     r0, #SP_RDRF
4485         beq     SP_loop3
4486
4487         ldr     r0, [r1, #SP_RDR]
4488         and     r0, r0, #255
4489         bx      lr
4490 .endfunc
4491
4492 .func NVRAM_Xfer, NVRAM_XFER
4493         /* r0 = dest address */
4494         /* r1 = not used */
4495         /* r2 = src address within NVRAM */
4496         /* r3 = length */
4497 NVRAM_XFER:
4498         stmdb   sp!, {r4, r5, lr}
4499         mov     r5, r0          /* save r0 (dest address) */
4500         mov     r4, r3          /* save r3 (length) */
4501         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4502         and     r0, r0, #8
4503         add     r0, r0, #NVRAM_CMD_READ
4504         ldr     r1, =NVRAM_SCRATCH
4505         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4506         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4507 _local1:
4508         bl      NVRAM_INIT
4509         tst     r0, #NVRAM_SR_RDY
4510         bne     _local1
4511         mov     r0, #20
4512         bl      DELAY9
4513         mov     r2, r4          /* length */
4514         mov     r1, r5          /* dest address */
4515         mov     r0, #2          /* bytes to transfer in command */
4516         bl      NVRAM_XFER2
4517         ldmia   sp!, {r4, r5, lr}
4518         bx      lr
4519 .endfunc
4520
4521 .func NVRAM_Xfer2, NVRAM_XFER2
4522 NVRAM_XFER2:
4523         stmdb   sp!, {r4, r5, r6, lr}
4524         ldr     r4, =SP_BASE
4525         mov     r3, #0
4526         cmp     r0, #0
4527         bls     _local2
4528         ldr     r5, =NVRAM_SCRATCH
4529 _local4:
4530         ldrb    r6, [r5, r3]
4531         str     r6, [r4, #SP_TDR]
4532 _local3:
4533         ldr     r6, [r4, #SP_SR]
4534         tst     r6, #SP_TDRE
4535         beq     _local3
4536         add     r3, r3, #1
4537         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4538         blo     _local4
4539 _local2:
4540         mov     r3, #SPI_8CLOCKS
4541         str     r3, [r4, #SP_TDR]
4542         ldr     r0, [r4, #SP_RDR]
4543 _local5:
4544         ldr     r0, [r4, #SP_SR]
4545         tst     r0, #SP_RDRF
4546         beq     _local5
4547         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 */
4548         mov     r0, #0
4549         cmp     r2, #0  /* r2 is # of bytes to copy in */
4550         bls     _local6
4551 _local7:
4552         ldr     r5, [r4, #SP_SR]
4553         tst     r5, #SP_TDRE
4554         beq     _local7
4555         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4556 _local8:
4557         ldr     r5, [r4, #SP_SR]
4558         tst     r5, #SP_RDRF
4559         beq     _local8
4560         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4561         strb    r5, [r1], #1 /* postindexed */
4562         add     r0, r0, #1
4563         cmp     r0, r2
4564         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4565 _local6:
4566         mov     r0, #200
4567         bl      DELAY9
4568         ldmia   sp!, {r4, r5, r6, lr}
4569         bx      lr
4570 #endif