drivers/net/wireless/atmel/atmel.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003-2004 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12     extensions, (C) Jean Tourrilhes.
  13
  14     The firmware module for reading the MAC address of the card comes from
  15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17     This file contains the module in binary form and, under the terms
  18     of the GPL, in source form. The source is located at the end of the file.
  19
  20     This program is free software; you can redistribute it and/or modify
  21     it under the terms of the GNU General Public License as published by
  22     the Free Software Foundation; either version 2 of the License, or
  23     (at your option) any later version.
  24
  25     This software is distributed in the hope that it will be useful,
  26     but WITHOUT ANY WARRANTY; without even the implied warranty of
  27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28     GNU General Public License for more details.
  29
  30     You should have received a copy of the GNU General Public License
  31     along with Atmel wireless lan drivers; if not, see
  32     <http://www.gnu.org/licenses/>.
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  36
  37     Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
  38     hardware used during development of this driver.
  39
  40 ******************************************************************************/
  41
  42 #include <linux/interrupt.h>
  43
  44 #include <linux/kernel.h>
  45 #include <linux/ptrace.h>
  46 #include <linux/slab.h>
  47 #include <linux/string.h>
  48 #include <linux/timer.h>
  49 #include <asm/byteorder.h>
  50 #include <asm/io.h>
  51 #include <linux/uaccess.h>
  52 #include <linux/module.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/if_arp.h>
  57 #include <linux/ioport.h>
  58 #include <linux/fcntl.h>
  59 #include <linux/delay.h>
  60 #include <linux/wireless.h>
  61 #include <net/iw_handler.h>
  62 #include <linux/crc32.h>
  63 #include <linux/proc_fs.h>
  64 #include <linux/seq_file.h>
  65 #include <linux/device.h>
  66 #include <linux/moduleparam.h>
  67 #include <linux/firmware.h>
  68 #include <linux/jiffies.h>
  69 #include <net/cfg80211.h>
  70 #include "atmel.h"
  71
  72 #define DRIVER_MAJOR 0
  73 #define DRIVER_MINOR 98
  74
  75 MODULE_AUTHOR("Simon Kelley");
  76 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  77 MODULE_LICENSE("GPL");
  78 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  79
  80 /* The name of the firmware file to be loaded
  81    over-rides any automatic selection */
  82 static char *firmware = NULL;
  83 module_param(firmware, charp, 0);
  84
  85 /* table of firmware file names */
  86 static struct {
  87         AtmelFWType fw_type;
  88         const char *fw_file;
  89         const char *fw_file_ext;
  90 } fw_table[] = {
  91         { ATMEL_FW_TYPE_502,            "/*(DEBLOBBED)*/",      "bin" },
  92         { ATMEL_FW_TYPE_502D,           "/*(DEBLOBBED)*/",      "bin" },
  93         { ATMEL_FW_TYPE_502E,           "/*(DEBLOBBED)*/",      "bin" },
  94         { ATMEL_FW_TYPE_502_3COM,       "/*(DEBLOBBED)*/",      "bin" },
  95         { ATMEL_FW_TYPE_504,            "/*(DEBLOBBED)*/",      "bin" },
  96         { ATMEL_FW_TYPE_504_2958,       "/*(DEBLOBBED)*/",      "bin" },
  97         { ATMEL_FW_TYPE_504A_2958,      "/*(DEBLOBBED)*/",      "bin" },
  98         { ATMEL_FW_TYPE_506,            "/*(DEBLOBBED)*/",      "bin" },
  99         { ATMEL_FW_TYPE_NONE,           NULL,                   NULL }
 100 };
 101 /*(DEBLOBBED)*/
 102
 103 #define MAX_SSID_LENGTH 32
 104 #define MGMT_JIFFIES (256 * HZ / 100)
 105
 106 #define MAX_BSS_ENTRIES 64
 107
 108 /* registers */
 109 #define GCR  0x00    /* (SIR0)  General Configuration Register */
 110 #define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
 111 #define AR   0x04
 112 #define DR   0x08
 113 #define MR1  0x12    /* Mirror Register 1 */
 114 #define MR2  0x14    /* Mirror Register 2 */
 115 #define MR3  0x16    /* Mirror Register 3 */
 116 #define MR4  0x18    /* Mirror Register 4 */
 117
 118 #define GPR1                            0x0c
 119 #define GPR2                            0x0e
 120 #define GPR3                            0x10
 121 /*
 122  * Constants for the GCR register.
 123  */
 124 #define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
 125 #define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
 126 #define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
 127 #define GCR_ENINT     0x0002          /* Enable Interrupts */
 128 #define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */
 129
 130 #define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
 131 #define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
 132 /*
 133  *Constants for the MR registers.
 134  */
 135 #define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
 136 #define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
 137 #define MAC_INIT_OK             0x0002        /* MAC boot has been completed */
 138
 139 #define MIB_MAX_DATA_BYTES    212
 140 #define MIB_HEADER_SIZE       4    /* first four fields */
 141
 142 struct get_set_mib {
 143         u8 type;
 144         u8 size;
 145         u8 index;
 146         u8 reserved;
 147         u8 data[MIB_MAX_DATA_BYTES];
 148 };
 149
 150 struct rx_desc {
 151         u32          Next;
 152         u16          MsduPos;
 153         u16          MsduSize;
 154
 155         u8           State;
 156         u8           Status;
 157         u8           Rate;
 158         u8           Rssi;
 159         u8           LinkQuality;
 160         u8           PreambleType;
 161         u16          Duration;
 162         u32          RxTime;
 163 };
 164
 165 #define RX_DESC_FLAG_VALID       0x80
 166 #define RX_DESC_FLAG_CONSUMED    0x40
 167 #define RX_DESC_FLAG_IDLE        0x00
 168
 169 #define RX_STATUS_SUCCESS        0x00
 170
 171 #define RX_DESC_MSDU_POS_OFFSET      4
 172 #define RX_DESC_MSDU_SIZE_OFFSET     6
 173 #define RX_DESC_FLAGS_OFFSET         8
 174 #define RX_DESC_STATUS_OFFSET        9
 175 #define RX_DESC_RSSI_OFFSET          11
 176 #define RX_DESC_LINK_QUALITY_OFFSET  12
 177 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 178 #define RX_DESC_DURATION_OFFSET      14
 179 #define RX_DESC_RX_TIME_OFFSET       16
 180
 181 struct tx_desc {
 182         u32       NextDescriptor;
 183         u16       TxStartOfFrame;
 184         u16       TxLength;
 185
 186         u8        TxState;
 187         u8        TxStatus;
 188         u8        RetryCount;
 189
 190         u8        TxRate;
 191
 192         u8        KeyIndex;
 193         u8        ChiperType;
 194         u8        ChipreLength;
 195         u8        Reserved1;
 196
 197         u8        Reserved;
 198         u8        PacketType;
 199         u16       HostTxLength;
 200 };
 201
 202 #define TX_DESC_NEXT_OFFSET          0
 203 #define TX_DESC_POS_OFFSET           4
 204 #define TX_DESC_SIZE_OFFSET          6
 205 #define TX_DESC_FLAGS_OFFSET         8
 206 #define TX_DESC_STATUS_OFFSET        9
 207 #define TX_DESC_RETRY_OFFSET         10
 208 #define TX_DESC_RATE_OFFSET          11
 209 #define TX_DESC_KEY_INDEX_OFFSET     12
 210 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 211 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 212 #define TX_DESC_PACKET_TYPE_OFFSET   17
 213 #define TX_DESC_HOST_LENGTH_OFFSET   18
 214
 215 /*
 216  * Host-MAC interface
 217  */
 218
 219 #define TX_STATUS_SUCCESS       0x00
 220
 221 #define TX_FIRM_OWN             0x80
 222 #define TX_DONE                 0x40
 223
 224 #define TX_ERROR                0x01
 225
 226 #define TX_PACKET_TYPE_DATA     0x01
 227 #define TX_PACKET_TYPE_MGMT     0x02
 228
 229 #define ISR_EMPTY               0x00        /* no bits set in ISR */
 230 #define ISR_TxCOMPLETE          0x01        /* packet transmitted */
 231 #define ISR_RxCOMPLETE          0x02        /* packet received */
 232 #define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
 233 #define ISR_FATAL_ERROR         0x08        /* Fatal error */
 234 #define ISR_COMMAND_COMPLETE    0x10        /* command completed */
 235 #define ISR_OUT_OF_RANGE        0x20        /* command completed */
 236 #define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
 237 #define ISR_GENERIC_IRQ         0x80
 238
 239 #define Local_Mib_Type          0x01
 240 #define Mac_Address_Mib_Type    0x02
 241 #define Mac_Mib_Type            0x03
 242 #define Statistics_Mib_Type     0x04
 243 #define Mac_Mgmt_Mib_Type       0x05
 244 #define Mac_Wep_Mib_Type        0x06
 245 #define Phy_Mib_Type            0x07
 246 #define Multi_Domain_MIB        0x08
 247
 248 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 249 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 250 #define MAC_MIB_RTS_THRESHOLD_POS             10
 251 #define MAC_MIB_SHORT_RETRY_POS               16
 252 #define MAC_MIB_LONG_RETRY_POS                17
 253 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 254 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 255 #define MAC_MGMT_MIB_STATION_ID_POS           6
 256 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 257 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 258 #define MAC_MGMT_MIB_PS_MODE_POS              53
 259 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 260 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 261 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 262 #define PHY_MIB_CHANNEL_POS                   14
 263 #define PHY_MIB_RATE_SET_POS                  20
 264 #define PHY_MIB_REG_DOMAIN_POS                26
 265 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 266 #define LOCAL_MIB_SSID_SIZE                   5
 267 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 268 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 269 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 270 #define LOCAL_MIB_PREAMBLE_TYPE               9
 271 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 272
 273 #define         CMD_Set_MIB_Vars              0x01
 274 #define         CMD_Get_MIB_Vars              0x02
 275 #define         CMD_Scan                      0x03
 276 #define         CMD_Join                      0x04
 277 #define         CMD_Start                     0x05
 278 #define         CMD_EnableRadio               0x06
 279 #define         CMD_DisableRadio              0x07
 280 #define         CMD_SiteSurvey                0x0B
 281
 282 #define         CMD_STATUS_IDLE                   0x00
 283 #define         CMD_STATUS_COMPLETE               0x01
 284 #define         CMD_STATUS_UNKNOWN                0x02
 285 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 286 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 287 #define         CMD_STATUS_TIME_OUT               0x07
 288 #define         CMD_STATUS_IN_PROGRESS            0x08
 289 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 290 #define         CMD_STATUS_HOST_ERROR             0xFF
 291 #define         CMD_STATUS_BUSY                   0xFE
 292
 293 #define CMD_BLOCK_COMMAND_OFFSET        0
 294 #define CMD_BLOCK_STATUS_OFFSET         1
 295 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 296
 297 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 298
 299 #define MGMT_FRAME_BODY_OFFSET          24
 300 #define MAX_AUTHENTICATION_RETRIES      3
 301 #define MAX_ASSOCIATION_RETRIES         3
 302
 303 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 304
 305 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 306 #define LOOP_RETRY_LIMIT   500000
 307
 308 #define ACTIVE_MODE     1
 309 #define PS_MODE         2
 310
 311 #define MAX_ENCRYPTION_KEYS 4
 312 #define MAX_ENCRYPTION_KEY_SIZE 40
 313
 314 /*
 315  * 802.11 related definitions
 316  */
 317
 318 /*
 319  * Regulatory Domains
 320  */
 321
 322 #define REG_DOMAIN_FCC          0x10    /* Channels     1-11    USA                             */
 323 #define REG_DOMAIN_DOC          0x20    /* Channel      1-11    Canada                          */
 324 #define REG_DOMAIN_ETSI         0x30    /* Channel      1-13    Europe (ex Spain/France)        */
 325 #define REG_DOMAIN_SPAIN        0x31    /* Channel      10-11   Spain                           */
 326 #define REG_DOMAIN_FRANCE       0x32    /* Channel      10-13   France                          */
 327 #define REG_DOMAIN_MKK          0x40    /* Channel      14      Japan                           */
 328 #define REG_DOMAIN_MKK1         0x41    /* Channel      1-14    Japan(MKK1)                     */
 329 #define REG_DOMAIN_ISRAEL       0x50    /* Channel      3-9     ISRAEL                          */
 330
 331 #define BSS_TYPE_AD_HOC         1
 332 #define BSS_TYPE_INFRASTRUCTURE 2
 333
 334 #define SCAN_TYPE_ACTIVE        0
 335 #define SCAN_TYPE_PASSIVE       1
 336
 337 #define LONG_PREAMBLE           0
 338 #define SHORT_PREAMBLE          1
 339 #define AUTO_PREAMBLE           2
 340
 341 #define DATA_FRAME_WS_HEADER_SIZE   30
 342
 343 /* promiscuous mode control */
 344 #define PROM_MODE_OFF                   0x0
 345 #define PROM_MODE_UNKNOWN               0x1
 346 #define PROM_MODE_CRC_FAILED            0x2
 347 #define PROM_MODE_DUPLICATED            0x4
 348 #define PROM_MODE_MGMT                  0x8
 349 #define PROM_MODE_CTRL                  0x10
 350 #define PROM_MODE_BAD_PROTOCOL          0x20
 351
 352 #define IFACE_INT_STATUS_OFFSET         0
 353 #define IFACE_INT_MASK_OFFSET           1
 354 #define IFACE_LOCKOUT_HOST_OFFSET       2
 355 #define IFACE_LOCKOUT_MAC_OFFSET        3
 356 #define IFACE_FUNC_CTRL_OFFSET          28
 357 #define IFACE_MAC_STAT_OFFSET           30
 358 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 359
 360 #define CIPHER_SUITE_NONE     0
 361 #define CIPHER_SUITE_WEP_64   1
 362 #define CIPHER_SUITE_TKIP     2
 363 #define CIPHER_SUITE_AES      3
 364 #define CIPHER_SUITE_CCX      4
 365 #define CIPHER_SUITE_WEP_128  5
 366
 367 /*
 368  * IFACE MACROS & definitions
 369  */
 370
 371 /*
 372  * FuncCtrl field:
 373  */
 374 #define FUNC_CTRL_TxENABLE              0x10
 375 #define FUNC_CTRL_RxENABLE              0x20
 376 #define FUNC_CTRL_INIT_COMPLETE         0x01
 377
 378 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 379    For copyright information and source see the end of this file. */
 380 static u8 mac_reader[] = {
 381         0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
 382         0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
 383         0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 384         0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
 385         0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
 386         0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
 387         0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
 388         0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
 389         0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
 390         0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
 391         0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 392         0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 393         0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 394         0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 395         0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
 396         0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
 397         0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
 398         0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
 399         0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
 400         0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
 401         0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
 402         0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
 403         0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
 404         0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 405         0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 406         0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
 407         0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
 408         0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
 409         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
 410         0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
 411         0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
 412         0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
 413         0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
 414         0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
 415         0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
 416         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
 417         0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
 418         0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
 419         0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
 420         0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
 421         0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
 422         0x00, 0x01, 0x00, 0x02
 423 };
 424
 425 struct atmel_private {
 426         void *card; /* Bus dependent structure varies for PCcard */
 427         int (*present_callback)(void *); /* And callback which uses it */
 428         char firmware_id[32];
 429         AtmelFWType firmware_type;
 430         u8 *firmware;
 431         int firmware_length;
 432         struct timer_list management_timer;
 433         struct net_device *dev;
 434         struct device *sys_dev;
 435         struct iw_statistics wstats;
 436         spinlock_t irqlock, timerlock;  /* spinlocks */
 437         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 438         enum {
 439                 CARD_TYPE_PARALLEL_FLASH,
 440                 CARD_TYPE_SPI_FLASH,
 441                 CARD_TYPE_EEPROM
 442         } card_type;
 443         int do_rx_crc; /* If we need to CRC incoming packets */
 444         int probe_crc; /* set if we don't yet know */
 445         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 446         u16 rx_desc_head;
 447         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 448         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 449
 450         u16 frag_seq, frag_len, frag_no;
 451         u8 frag_source[6];
 452
 453         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 454         u8 group_cipher_suite, pairwise_cipher_suite;
 455         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 456         int wep_key_len[MAX_ENCRYPTION_KEYS];
 457         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 458
 459         u16 host_info_base;
 460         struct host_info_struct {
 461                 /* NB this is matched to the hardware, don't change. */
 462                 u8 volatile int_status;
 463                 u8 volatile int_mask;
 464                 u8 volatile lockout_host;
 465                 u8 volatile lockout_mac;
 466
 467                 u16 tx_buff_pos;
 468                 u16 tx_buff_size;
 469                 u16 tx_desc_pos;
 470                 u16 tx_desc_count;
 471
 472                 u16 rx_buff_pos;
 473                 u16 rx_buff_size;
 474                 u16 rx_desc_pos;
 475                 u16 rx_desc_count;
 476
 477                 u16 build_version;
 478                 u16 command_pos;
 479
 480                 u16 major_version;
 481                 u16 minor_version;
 482
 483                 u16 func_ctrl;
 484                 u16 mac_status;
 485                 u16 generic_IRQ_type;
 486                 u8  reserved[2];
 487         } host_info;
 488
 489         enum {
 490                 STATION_STATE_SCANNING,
 491                 STATION_STATE_JOINNING,
 492                 STATION_STATE_AUTHENTICATING,
 493                 STATION_STATE_ASSOCIATING,
 494                 STATION_STATE_READY,
 495                 STATION_STATE_REASSOCIATING,
 496                 STATION_STATE_DOWN,
 497                 STATION_STATE_MGMT_ERROR
 498         } station_state;
 499
 500         int operating_mode, power_mode;
 501         unsigned long last_qual;
 502         int beacons_this_sec;
 503         int channel;
 504         int reg_domain, config_reg_domain;
 505         int tx_rate;
 506         int auto_tx_rate;
 507         int rts_threshold;
 508         int frag_threshold;
 509         int long_retry, short_retry;
 510         int preamble;
 511         int default_beacon_period, beacon_period, listen_interval;
 512         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 513         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 514         enum {
 515                 SITE_SURVEY_IDLE,
 516                 SITE_SURVEY_IN_PROGRESS,
 517                 SITE_SURVEY_COMPLETED
 518         } site_survey_state;
 519         unsigned long last_survey;
 520
 521         int station_was_associated, station_is_associated;
 522         int fast_scan;
 523
 524         struct bss_info {
 525                 int channel;
 526                 int SSIDsize;
 527                 int RSSI;
 528                 int UsingWEP;
 529                 int preamble;
 530                 int beacon_period;
 531                 int BSStype;
 532                 u8 BSSID[6];
 533                 u8 SSID[MAX_SSID_LENGTH];
 534         } BSSinfo[MAX_BSS_ENTRIES];
 535         int BSS_list_entries, current_BSS;
 536         int connect_to_any_BSS;
 537         int SSID_size, new_SSID_size;
 538         u8 CurrentBSSID[6], BSSID[6];
 539         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 540         u64 last_beacon_timestamp;
 541         u8 rx_buf[MAX_WIRELESS_BODY];
 542 };
 543
 544 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 545
 546 static const struct {
 547         int reg_domain;
 548         int min, max;
 549         char *name;
 550 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 551                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 552                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 553                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 554                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 555                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 556                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 557                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 558
 559 static void build_wpa_mib(struct atmel_private *priv);
 560 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 561 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 562                                const unsigned char *src, u16 len);
 563 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 564                                u16 src, u16 len);
 565 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 566 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 567 static int atmel_lock_mac(struct atmel_private *priv);
 568 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 569 static void atmel_command_irq(struct atmel_private *priv);
 570 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 571 static void atmel_management_frame(struct atmel_private *priv,
 572                                    struct ieee80211_hdr *header,
 573                                    u16 frame_len, u8 rssi);
 574 static void atmel_management_timer(struct timer_list *t);
 575 static void atmel_send_command(struct atmel_private *priv, int command,
 576                                void *cmd, int cmd_size);
 577 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 578                                    void *cmd, int cmd_size);
 579 static void atmel_transmit_management_frame(struct atmel_private *priv,
 580                                             struct ieee80211_hdr *header,
 581                                             u8 *body, int body_len);
 582
 583 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 584 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 585                            u8 data);
 586 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 587                             u16 data);
 588 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 589                           u8 *data, int data_len);
 590 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 591                           u8 *data, int data_len);
 592 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 593 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 594 static void atmel_smooth_qual(struct atmel_private *priv);
 595 static void atmel_writeAR(struct net_device *dev, u16 data);
 596 static int probe_atmel_card(struct net_device *dev);
 597 static int reset_atmel_card(struct net_device *dev);
 598 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 599 int atmel_open (struct net_device *dev);
 600
 601 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 602 {
 603         return priv->host_info_base + offset;
 604 }
 605
 606 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 607 {
 608         return priv->host_info.command_pos + offset;
 609 }
 610
 611 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 612 {
 613         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 614 }
 615
 616 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 617 {
 618         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 619 }
 620
 621 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 622 {
 623         return inb(dev->base_addr + offset);
 624 }
 625
 626 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 627 {
 628         outb(data, dev->base_addr + offset);
 629 }
 630
 631 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 632 {
 633         return inw(dev->base_addr + offset);
 634 }
 635
 636 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 637 {
 638         outw(data, dev->base_addr + offset);
 639 }
 640
 641 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 642 {
 643         atmel_writeAR(priv->dev, pos);
 644         return atmel_read8(priv->dev, DR);
 645 }
 646
 647 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 648 {
 649         atmel_writeAR(priv->dev, pos);
 650         atmel_write8(priv->dev, DR, data);
 651 }
 652
 653 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 654 {
 655         atmel_writeAR(priv->dev, pos);
 656         return atmel_read16(priv->dev, DR);
 657 }
 658
 659 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 660 {
 661         atmel_writeAR(priv->dev, pos);
 662         atmel_write16(priv->dev, DR, data);
 663 }
 664
 665 static const struct iw_handler_def atmel_handler_def;
 666
 667 static void tx_done_irq(struct atmel_private *priv)
 668 {
 669         int i;
 670
 671         for (i = 0;
 672              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 673                      i < priv->host_info.tx_desc_count;
 674              i++) {
 675                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 676                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 677                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 678
 679                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 680
 681                 priv->tx_free_mem += msdu_size;
 682                 priv->tx_desc_free++;
 683
 684                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 685                         priv->tx_buff_head = 0;
 686                 else
 687                         priv->tx_buff_head += msdu_size;
 688
 689                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 690                         priv->tx_desc_head++ ;
 691                 else
 692                         priv->tx_desc_head = 0;
 693
 694                 if (type == TX_PACKET_TYPE_DATA) {
 695                         if (status == TX_STATUS_SUCCESS)
 696                                 priv->dev->stats.tx_packets++;
 697                         else
 698                                 priv->dev->stats.tx_errors++;
 699                         netif_wake_queue(priv->dev);
 700                 }
 701         }
 702 }
 703
 704 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 705 {
 706         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 707
 708         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 709                 return 0;
 710
 711         if (bottom_free >= len)
 712                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 713
 714         if (priv->tx_free_mem - bottom_free >= len) {
 715                 priv->tx_buff_tail = 0;
 716                 return priv->host_info.tx_buff_pos;
 717         }
 718
 719         return 0;
 720 }
 721
 722 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 723                                  u16 len, u16 buff, u8 type)
 724 {
 725         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 726         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 727         if (!priv->use_wpa)
 728                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 729         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 730         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 731         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 732         if (priv->use_wpa) {
 733                 int cipher_type, cipher_length;
 734                 if (is_bcast) {
 735                         cipher_type = priv->group_cipher_suite;
 736                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 737                             cipher_type == CIPHER_SUITE_WEP_128)
 738                                 cipher_length = 8;
 739                         else if (cipher_type == CIPHER_SUITE_TKIP)
 740                                 cipher_length = 12;
 741                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 742                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 743                                 cipher_type = priv->pairwise_cipher_suite;
 744                                 cipher_length = 8;
 745                         } else {
 746                                 cipher_type = CIPHER_SUITE_NONE;
 747                                 cipher_length = 0;
 748                         }
 749                 } else {
 750                         cipher_type = priv->pairwise_cipher_suite;
 751                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 752                             cipher_type == CIPHER_SUITE_WEP_128)
 753                                 cipher_length = 8;
 754                         else if (cipher_type == CIPHER_SUITE_TKIP)
 755                                 cipher_length = 12;
 756                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 757                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 758                                 cipher_type = priv->group_cipher_suite;
 759                                 cipher_length = 8;
 760                         } else {
 761                                 cipher_type = CIPHER_SUITE_NONE;
 762                                 cipher_length = 0;
 763                         }
 764                 }
 765
 766                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 767                             cipher_type);
 768                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 769                             cipher_length);
 770         }
 771         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 772         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 773         if (priv->tx_desc_previous != priv->tx_desc_tail)
 774                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 775         priv->tx_desc_previous = priv->tx_desc_tail;
 776         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 777                 priv->tx_desc_tail++;
 778         else
 779                 priv->tx_desc_tail = 0;
 780         priv->tx_desc_free--;
 781         priv->tx_free_mem -= len;
 782 }
 783
 784 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 785 {
 786         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 787         struct atmel_private *priv = netdev_priv(dev);
 788         struct ieee80211_hdr header;
 789         unsigned long flags;
 790         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 791
 792         if (priv->card && priv->present_callback &&
 793             !(*priv->present_callback)(priv->card)) {
 794                 dev->stats.tx_errors++;
 795                 dev_kfree_skb(skb);
 796                 return NETDEV_TX_OK;
 797         }
 798
 799         if (priv->station_state != STATION_STATE_READY) {
 800                 dev->stats.tx_errors++;
 801                 dev_kfree_skb(skb);
 802                 return NETDEV_TX_OK;
 803         }
 804
 805         /* first ensure the timer func cannot run */
 806         spin_lock_bh(&priv->timerlock);
 807         /* then stop the hardware ISR */
 808         spin_lock_irqsave(&priv->irqlock, flags);
 809         /* nb doing the above in the opposite order will deadlock */
 810
 811         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 812            12 first bytes (containing DA/SA) and put them in the appropriate
 813            fields of the Wireless Header. Thus the packet length is then the
 814            initial + 18 (+30-12) */
 815
 816         if (!(buff = find_tx_buff(priv, len + 18))) {
 817                 dev->stats.tx_dropped++;
 818                 spin_unlock_irqrestore(&priv->irqlock, flags);
 819                 spin_unlock_bh(&priv->timerlock);
 820                 netif_stop_queue(dev);
 821                 return NETDEV_TX_BUSY;
 822         }
 823
 824         frame_ctl = IEEE80211_FTYPE_DATA;
 825         header.duration_id = 0;
 826         header.seq_ctrl = 0;
 827         if (priv->wep_is_on)
 828                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 829         if (priv->operating_mode == IW_MODE_ADHOC) {
 830                 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
 831                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 832                 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
 833         } else {
 834                 frame_ctl |= IEEE80211_FCTL_TODS;
 835                 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
 836                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 837                 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
 838         }
 839
 840         if (priv->use_wpa)
 841                 memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN);
 842
 843         header.frame_control = cpu_to_le16(frame_ctl);
 844         /* Copy the wireless header into the card */
 845         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 846         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 847         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 848         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 849
 850         /* low bit of first byte of destination tells us if broadcast */
 851         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 852         dev->stats.tx_bytes += len;
 853
 854         spin_unlock_irqrestore(&priv->irqlock, flags);
 855         spin_unlock_bh(&priv->timerlock);
 856         dev_kfree_skb(skb);
 857
 858         return NETDEV_TX_OK;
 859 }
 860
 861 static void atmel_transmit_management_frame(struct atmel_private *priv,
 862                                             struct ieee80211_hdr *header,
 863                                             u8 *body, int body_len)
 864 {
 865         u16 buff;
 866         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 867
 868         if (!(buff = find_tx_buff(priv, len)))
 869                 return;
 870
 871         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 872         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 873         priv->tx_buff_tail += len;
 874         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 875 }
 876
 877 static void fast_rx_path(struct atmel_private *priv,
 878                          struct ieee80211_hdr *header,
 879                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 880 {
 881         /* fast path: unfragmented packet copy directly into skbuf */
 882         u8 mac4[6];
 883         struct sk_buff  *skb;
 884         unsigned char *skbp;
 885
 886         /* get the final, mac 4 header field, this tells us encapsulation */
 887         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 888         msdu_size -= 6;
 889
 890         if (priv->do_rx_crc) {
 891                 crc = crc32_le(crc, mac4, 6);
 892                 msdu_size -= 4;
 893         }
 894
 895         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 896                 priv->dev->stats.rx_dropped++;
 897                 return;
 898         }
 899
 900         skb_reserve(skb, 2);
 901         skbp = skb_put(skb, msdu_size + 12);
 902         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 903
 904         if (priv->do_rx_crc) {
 905                 u32 netcrc;
 906                 crc = crc32_le(crc, skbp + 12, msdu_size);
 907                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 908                 if ((crc ^ 0xffffffff) != netcrc) {
 909                         priv->dev->stats.rx_crc_errors++;
 910                         dev_kfree_skb(skb);
 911                         return;
 912                 }
 913         }
 914
 915         memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
 916         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 917                 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
 918         else
 919                 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
 920
 921         skb->protocol = eth_type_trans(skb, priv->dev);
 922         skb->ip_summed = CHECKSUM_NONE;
 923         netif_rx(skb);
 924         priv->dev->stats.rx_bytes += 12 + msdu_size;
 925         priv->dev->stats.rx_packets++;
 926 }
 927
 928 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 929    It doesn't matter that this is slow: it is only used to proble the first few
 930    packets. */
 931 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 932 {
 933         int i = msdu_size - 4;
 934         u32 netcrc, crc = 0xffffffff;
 935
 936         if (msdu_size < 4)
 937                 return 0;
 938
 939         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 940
 941         atmel_writeAR(priv->dev, packet_loc);
 942         while (i--) {
 943                 u8 octet = atmel_read8(priv->dev, DR);
 944                 crc = crc32_le(crc, &octet, 1);
 945         }
 946
 947         return (crc ^ 0xffffffff) == netcrc;
 948 }
 949
 950 static void frag_rx_path(struct atmel_private *priv,
 951                          struct ieee80211_hdr *header,
 952                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 953                          u8 frag_no, int more_frags)
 954 {
 955         u8 mac4[ETH_ALEN];
 956         u8 source[ETH_ALEN];
 957         struct sk_buff *skb;
 958
 959         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 960                 memcpy(source, header->addr3, ETH_ALEN);
 961         else
 962                 memcpy(source, header->addr2, ETH_ALEN);
 963
 964         rx_packet_loc += 24; /* skip header */
 965
 966         if (priv->do_rx_crc)
 967                 msdu_size -= 4;
 968
 969         if (frag_no == 0) { /* first fragment */
 970                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
 971                 msdu_size -= ETH_ALEN;
 972                 rx_packet_loc += ETH_ALEN;
 973
 974                 if (priv->do_rx_crc)
 975                         crc = crc32_le(crc, mac4, 6);
 976
 977                 priv->frag_seq = seq_no;
 978                 priv->frag_no = 1;
 979                 priv->frag_len = msdu_size;
 980                 memcpy(priv->frag_source, source, ETH_ALEN);
 981                 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
 982                 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
 983
 984                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 985
 986                 if (priv->do_rx_crc) {
 987                         u32 netcrc;
 988                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 989                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 990                         if ((crc ^ 0xffffffff) != netcrc) {
 991                                 priv->dev->stats.rx_crc_errors++;
 992                                 eth_broadcast_addr(priv->frag_source);
 993                         }
 994                 }
 995
 996         } else if (priv->frag_no == frag_no &&
 997                    priv->frag_seq == seq_no &&
 998                    memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
 999
1000                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1001                                    rx_packet_loc, msdu_size);
1002                 if (priv->do_rx_crc) {
1003                         u32 netcrc;
1004                         crc = crc32_le(crc,
1005                                        &priv->rx_buf[12 + priv->frag_len],
1006                                        msdu_size);
1007                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1008                         if ((crc ^ 0xffffffff) != netcrc) {
1009                                 priv->dev->stats.rx_crc_errors++;
1010                                 eth_broadcast_addr(priv->frag_source);
1011                                 more_frags = 1; /* don't send broken assembly */
1012                         }
1013                 }
1014
1015                 priv->frag_len += msdu_size;
1016                 priv->frag_no++;
1017
1018                 if (!more_frags) { /* last one */
1019                         eth_broadcast_addr(priv->frag_source);
1020                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1021                                 priv->dev->stats.rx_dropped++;
1022                         } else {
1023                                 skb_reserve(skb, 2);
1024                                 skb_put_data(skb, priv->rx_buf,
1025                                              priv->frag_len + 12);
1026                                 skb->protocol = eth_type_trans(skb, priv->dev);
1027                                 skb->ip_summed = CHECKSUM_NONE;
1028                                 netif_rx(skb);
1029                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1030                                 priv->dev->stats.rx_packets++;
1031                         }
1032                 }
1033         } else
1034                 priv->wstats.discard.fragment++;
1035 }
1036
1037 static void rx_done_irq(struct atmel_private *priv)
1038 {
1039         int i;
1040         struct ieee80211_hdr header;
1041
1042         for (i = 0;
1043              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1044                      i < priv->host_info.rx_desc_count;
1045              i++) {
1046
1047                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1048                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1049                 u32 crc = 0xffffffff;
1050
1051                 if (status != RX_STATUS_SUCCESS) {
1052                         if (status == 0xc1) /* determined by experiment */
1053                                 priv->wstats.discard.nwid++;
1054                         else
1055                                 priv->dev->stats.rx_errors++;
1056                         goto next;
1057                 }
1058
1059                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1060                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1061
1062                 if (msdu_size < 30) {
1063                         priv->dev->stats.rx_errors++;
1064                         goto next;
1065                 }
1066
1067                 /* Get header as far as end of seq_ctrl */
1068                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1069                 frame_ctl = le16_to_cpu(header.frame_control);
1070                 seq_control = le16_to_cpu(header.seq_ctrl);
1071
1072                 /* probe for CRC use here if needed  once five packets have
1073                    arrived with the same crc status, we assume we know what's
1074                    happening and stop probing */
1075                 if (priv->probe_crc) {
1076                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1077                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1078                         } else {
1079                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1080                         }
1081                         if (priv->do_rx_crc) {
1082                                 if (priv->crc_ok_cnt++ > 5)
1083                                         priv->probe_crc = 0;
1084                         } else {
1085                                 if (priv->crc_ko_cnt++ > 5)
1086                                         priv->probe_crc = 0;
1087                         }
1088                 }
1089
1090                 /* don't CRC header when WEP in use */
1091                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1092                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1093                 }
1094                 msdu_size -= 24; /* header */
1095
1096                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1097                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1098                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1099                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1100
1101                         if (!more_fragments && packet_fragment_no == 0) {
1102                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1103                         } else {
1104                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1105                                              packet_sequence_no, packet_fragment_no, more_fragments);
1106                         }
1107                 }
1108
1109                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1110                         /* copy rest of packet into buffer */
1111                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1112
1113                         /* we use the same buffer for frag reassembly and control packets */
1114                         eth_broadcast_addr(priv->frag_source);
1115
1116                         if (priv->do_rx_crc) {
1117                                 /* last 4 octets is crc */
1118                                 msdu_size -= 4;
1119                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1120                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1121                                         priv->dev->stats.rx_crc_errors++;
1122                                         goto next;
1123                                 }
1124                         }
1125
1126                         atmel_management_frame(priv, &header, msdu_size,
1127                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1128                 }
1129
1130 next:
1131                 /* release descriptor */
1132                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1133
1134                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1135                         priv->rx_desc_head++;
1136                 else
1137                         priv->rx_desc_head = 0;
1138         }
1139 }
1140
1141 static irqreturn_t service_interrupt(int irq, void *dev_id)
1142 {
1143         struct net_device *dev = (struct net_device *) dev_id;
1144         struct atmel_private *priv = netdev_priv(dev);
1145         u8 isr;
1146         int i = -1;
1147         static const u8 irq_order[] = {
1148                 ISR_OUT_OF_RANGE,
1149                 ISR_RxCOMPLETE,
1150                 ISR_TxCOMPLETE,
1151                 ISR_RxFRAMELOST,
1152                 ISR_FATAL_ERROR,
1153                 ISR_COMMAND_COMPLETE,
1154                 ISR_IBSS_MERGE,
1155                 ISR_GENERIC_IRQ
1156         };
1157
1158         if (priv->card && priv->present_callback &&
1159             !(*priv->present_callback)(priv->card))
1160                 return IRQ_HANDLED;
1161
1162         /* In this state upper-level code assumes it can mess with
1163            the card unhampered by interrupts which may change register state.
1164            Note that even though the card shouldn't generate interrupts
1165            the inturrupt line may be shared. This allows card setup
1166            to go on without disabling interrupts for a long time. */
1167         if (priv->station_state == STATION_STATE_DOWN)
1168                 return IRQ_NONE;
1169
1170         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1171
1172         while (1) {
1173                 if (!atmel_lock_mac(priv)) {
1174                         /* failed to contact card */
1175                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1176                         return IRQ_HANDLED;
1177                 }
1178
1179                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1180                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1181
1182                 if (!isr) {
1183                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1184                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1185                 }
1186
1187                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1188
1189                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1190                         if (isr & irq_order[i])
1191                                 break;
1192
1193                 if (!atmel_lock_mac(priv)) {
1194                         /* failed to contact card */
1195                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1196                         return IRQ_HANDLED;
1197                 }
1198
1199                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1200                 isr ^= irq_order[i];
1201                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1202                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1203
1204                 switch (irq_order[i]) {
1205
1206                 case ISR_OUT_OF_RANGE:
1207                         if (priv->operating_mode == IW_MODE_INFRA &&
1208                             priv->station_state == STATION_STATE_READY) {
1209                                 priv->station_is_associated = 0;
1210                                 atmel_scan(priv, 1);
1211                         }
1212                         break;
1213
1214                 case ISR_RxFRAMELOST:
1215                         priv->wstats.discard.misc++;
1216                         /* fall through */
1217                 case ISR_RxCOMPLETE:
1218                         rx_done_irq(priv);
1219                         break;
1220
1221                 case ISR_TxCOMPLETE:
1222                         tx_done_irq(priv);
1223                         break;
1224
1225                 case ISR_FATAL_ERROR:
1226                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1227                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1228                         break;
1229
1230                 case ISR_COMMAND_COMPLETE:
1231                         atmel_command_irq(priv);
1232                         break;
1233
1234                 case ISR_IBSS_MERGE:
1235                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1236                                       priv->CurrentBSSID, 6);
1237                         /* The WPA stuff cares about the current AP address */
1238                         if (priv->use_wpa)
1239                                 build_wpa_mib(priv);
1240                         break;
1241                 case ISR_GENERIC_IRQ:
1242                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1243                         break;
1244                 }
1245         }
1246 }
1247
1248 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1249 {
1250         struct atmel_private *priv = netdev_priv(dev);
1251
1252         /* update the link quality here in case we are seeing no beacons
1253            at all to drive the process */
1254         atmel_smooth_qual(priv);
1255
1256         priv->wstats.status = priv->station_state;
1257
1258         if (priv->operating_mode == IW_MODE_INFRA) {
1259                 if (priv->station_state != STATION_STATE_READY) {
1260                         priv->wstats.qual.qual = 0;
1261                         priv->wstats.qual.level = 0;
1262                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1263                                         | IW_QUAL_LEVEL_INVALID);
1264                 }
1265                 priv->wstats.qual.noise = 0;
1266                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1267         } else {
1268                 /* Quality levels cannot be determined in ad-hoc mode,
1269                    because we can 'hear' more that one remote station. */
1270                 priv->wstats.qual.qual = 0;
1271                 priv->wstats.qual.level = 0;
1272                 priv->wstats.qual.noise = 0;
1273                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1274                                         | IW_QUAL_LEVEL_INVALID
1275                                         | IW_QUAL_NOISE_INVALID;
1276                 priv->wstats.miss.beacon = 0;
1277         }
1278
1279         return &priv->wstats;
1280 }
1281
1282 static int atmel_set_mac_address(struct net_device *dev, void *p)
1283 {
1284         struct sockaddr *addr = p;
1285
1286         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1287         return atmel_open(dev);
1288 }
1289
1290 EXPORT_SYMBOL(atmel_open);
1291
1292 int atmel_open(struct net_device *dev)
1293 {
1294         struct atmel_private *priv = netdev_priv(dev);
1295         int i, channel, err;
1296
1297         /* any scheduled timer is no longer needed and might screw things up.. */
1298         del_timer_sync(&priv->management_timer);
1299
1300         /* Interrupts will not touch the card once in this state... */
1301         priv->station_state = STATION_STATE_DOWN;
1302
1303         if (priv->new_SSID_size) {
1304                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1305                 priv->SSID_size = priv->new_SSID_size;
1306                 priv->new_SSID_size = 0;
1307         }
1308         priv->BSS_list_entries = 0;
1309
1310         priv->AuthenticationRequestRetryCnt = 0;
1311         priv->AssociationRequestRetryCnt = 0;
1312         priv->ReAssociationRequestRetryCnt = 0;
1313         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1314         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1315
1316         priv->site_survey_state = SITE_SURVEY_IDLE;
1317         priv->station_is_associated = 0;
1318
1319         err = reset_atmel_card(dev);
1320         if (err)
1321                 return err;
1322
1323         if (priv->config_reg_domain) {
1324                 priv->reg_domain = priv->config_reg_domain;
1325                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1326         } else {
1327                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1328                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1329                         if (priv->reg_domain == channel_table[i].reg_domain)
1330                                 break;
1331                 if (i == ARRAY_SIZE(channel_table)) {
1332                         priv->reg_domain = REG_DOMAIN_MKK1;
1333                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1334                 }
1335         }
1336
1337         if ((channel = atmel_validate_channel(priv, priv->channel)))
1338                 priv->channel = channel;
1339
1340         /* this moves station_state on.... */
1341         atmel_scan(priv, 1);
1342
1343         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1344         return 0;
1345 }
1346
1347 static int atmel_close(struct net_device *dev)
1348 {
1349         struct atmel_private *priv = netdev_priv(dev);
1350
1351         /* Send event to userspace that we are disassociating */
1352         if (priv->station_state == STATION_STATE_READY) {
1353                 union iwreq_data wrqu;
1354
1355                 wrqu.data.length = 0;
1356                 wrqu.data.flags = 0;
1357                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1358                 eth_zero_addr(wrqu.ap_addr.sa_data);
1359                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1360         }
1361
1362         atmel_enter_state(priv, STATION_STATE_DOWN);
1363
1364         if (priv->bus_type == BUS_TYPE_PCCARD)
1365                 atmel_write16(dev, GCR, 0x0060);
1366         atmel_write16(dev, GCR, 0x0040);
1367         return 0;
1368 }
1369
1370 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1371 {
1372         /* check that channel is OK, if so return zero,
1373            else return suitable default channel */
1374         int i;
1375
1376         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1377                 if (priv->reg_domain == channel_table[i].reg_domain) {
1378                         if (channel >= channel_table[i].min &&
1379                             channel <= channel_table[i].max)
1380                                 return 0;
1381                         else
1382                                 return channel_table[i].min;
1383                 }
1384         return 0;
1385 }
1386
1387 #ifdef CONFIG_PROC_FS
1388 static int atmel_proc_show(struct seq_file *m, void *v)
1389 {
1390         struct atmel_private *priv = m->private;
1391         int i;
1392         char *s, *r, *c;
1393
1394         seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1395
1396         if (priv->station_state != STATION_STATE_DOWN) {
1397                 seq_printf(m,
1398                            "Firmware version:\t%d.%d build %d\n"
1399                            "Firmware location:\t",
1400                            priv->host_info.major_version,
1401                            priv->host_info.minor_version,
1402                            priv->host_info.build_version);
1403
1404                 if (priv->card_type != CARD_TYPE_EEPROM)
1405                         seq_puts(m, "on card\n");
1406                 else if (priv->firmware)
1407                         seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1408                 else
1409                         seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1410
1411                 switch (priv->card_type) {
1412                 case CARD_TYPE_PARALLEL_FLASH:
1413                         c = "Parallel flash";
1414                         break;
1415                 case CARD_TYPE_SPI_FLASH:
1416                         c = "SPI flash\n";
1417                         break;
1418                 case CARD_TYPE_EEPROM:
1419                         c = "EEPROM";
1420                         break;
1421                 default:
1422                         c = "<unknown>";
1423                 }
1424
1425                 r = "<unknown>";
1426                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1427                         if (priv->reg_domain == channel_table[i].reg_domain)
1428                                 r = channel_table[i].name;
1429
1430                 seq_printf(m, "MAC memory type:\t%s\n", c);
1431                 seq_printf(m, "Regulatory domain:\t%s\n", r);
1432                 seq_printf(m, "Host CRC checking:\t%s\n",
1433                          priv->do_rx_crc ? "On" : "Off");
1434                 seq_printf(m, "WPA-capable firmware:\t%s\n",
1435                          priv->use_wpa ? "Yes" : "No");
1436         }
1437
1438         switch (priv->station_state) {
1439         case STATION_STATE_SCANNING:
1440                 s = "Scanning";
1441                 break;
1442         case STATION_STATE_JOINNING:
1443                 s = "Joining";
1444                 break;
1445         case STATION_STATE_AUTHENTICATING:
1446                 s = "Authenticating";
1447                 break;
1448         case STATION_STATE_ASSOCIATING:
1449                 s = "Associating";
1450                 break;
1451         case STATION_STATE_READY:
1452                 s = "Ready";
1453                 break;
1454         case STATION_STATE_REASSOCIATING:
1455                 s = "Reassociating";
1456                 break;
1457         case STATION_STATE_MGMT_ERROR:
1458                 s = "Management error";
1459                 break;
1460         case STATION_STATE_DOWN:
1461                 s = "Down";
1462                 break;
1463         default:
1464                 s = "<unknown>";
1465         }
1466
1467         seq_printf(m, "Current state:\t\t%s\n", s);
1468         return 0;
1469 }
1470 #endif
1471
1472 static const struct net_device_ops atmel_netdev_ops = {
1473         .ndo_open               = atmel_open,
1474         .ndo_stop               = atmel_close,
1475         .ndo_set_mac_address    = atmel_set_mac_address,
1476         .ndo_start_xmit         = start_tx,
1477         .ndo_do_ioctl           = atmel_ioctl,
1478         .ndo_validate_addr      = eth_validate_addr,
1479 };
1480
1481 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1482                                    const AtmelFWType fw_type,
1483                                    struct device *sys_dev,
1484                                    int (*card_present)(void *), void *card)
1485 {
1486         struct net_device *dev;
1487         struct atmel_private *priv;
1488         int rc;
1489
1490         /* Create the network device object. */
1491         dev = alloc_etherdev(sizeof(*priv));
1492         if (!dev)
1493                 return NULL;
1494
1495         if (dev_alloc_name(dev, dev->name) < 0) {
1496                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1497                 goto err_out_free;
1498         }
1499
1500         priv = netdev_priv(dev);
1501         priv->dev = dev;
1502         priv->sys_dev = sys_dev;
1503         priv->present_callback = card_present;
1504         priv->card = card;
1505         priv->firmware = NULL;
1506         priv->firmware_type = fw_type;
1507         if (firmware) /* module parameter */
1508                 strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id));
1509         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1510         priv->station_state = STATION_STATE_DOWN;
1511         priv->do_rx_crc = 0;
1512         /* For PCMCIA cards, some chips need CRC, some don't
1513            so we have to probe. */
1514         if (priv->bus_type == BUS_TYPE_PCCARD) {
1515                 priv->probe_crc = 1;
1516                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1517         } else
1518                 priv->probe_crc = 0;
1519         priv->last_qual = jiffies;
1520         priv->last_beacon_timestamp = 0;
1521         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1522         eth_zero_addr(priv->BSSID);
1523         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1524         priv->station_was_associated = 0;
1525
1526         priv->last_survey = jiffies;
1527         priv->preamble = LONG_PREAMBLE;
1528         priv->operating_mode = IW_MODE_INFRA;
1529         priv->connect_to_any_BSS = 0;
1530         priv->config_reg_domain = 0;
1531         priv->reg_domain = 0;
1532         priv->tx_rate = 3;
1533         priv->auto_tx_rate = 1;
1534         priv->channel = 4;
1535         priv->power_mode = 0;
1536         priv->SSID[0] = '\0';
1537         priv->SSID_size = 0;
1538         priv->new_SSID_size = 0;
1539         priv->frag_threshold = 2346;
1540         priv->rts_threshold = 2347;
1541         priv->short_retry = 7;
1542         priv->long_retry = 4;
1543
1544         priv->wep_is_on = 0;
1545         priv->default_key = 0;
1546         priv->encryption_level = 0;
1547         priv->exclude_unencrypted = 0;
1548         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1549         priv->use_wpa = 0;
1550         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1551         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1552
1553         priv->default_beacon_period = priv->beacon_period = 100;
1554         priv->listen_interval = 1;
1555
1556         timer_setup(&priv->management_timer, atmel_management_timer, 0);
1557         spin_lock_init(&priv->irqlock);
1558         spin_lock_init(&priv->timerlock);
1559
1560         dev->netdev_ops = &atmel_netdev_ops;
1561         dev->wireless_handlers = &atmel_handler_def;
1562         dev->irq = irq;
1563         dev->base_addr = port;
1564
1565         /* MTU range: 68 - 2312 */
1566         dev->min_mtu = 68;
1567         dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1568
1569         SET_NETDEV_DEV(dev, sys_dev);
1570
1571         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1572                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1573                 goto err_out_free;
1574         }
1575
1576         if (!request_region(dev->base_addr, 32,
1577                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1578                 goto err_out_irq;
1579         }
1580
1581         if (register_netdev(dev))
1582                 goto err_out_res;
1583
1584         if (!probe_atmel_card(dev)) {
1585                 unregister_netdev(dev);
1586                 goto err_out_res;
1587         }
1588
1589         netif_carrier_off(dev);
1590
1591         if (!proc_create_single_data("driver/atmel", 0, NULL, atmel_proc_show,
1592                         priv))
1593                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1594
1595         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1596                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1597
1598         return dev;
1599
1600 err_out_res:
1601         release_region(dev->base_addr, 32);
1602 err_out_irq:
1603         free_irq(dev->irq, dev);
1604 err_out_free:
1605         free_netdev(dev);
1606         return NULL;
1607 }
1608
1609 EXPORT_SYMBOL(init_atmel_card);
1610
1611 void stop_atmel_card(struct net_device *dev)
1612 {
1613         struct atmel_private *priv = netdev_priv(dev);
1614
1615         /* put a brick on it... */
1616         if (priv->bus_type == BUS_TYPE_PCCARD)
1617                 atmel_write16(dev, GCR, 0x0060);
1618         atmel_write16(dev, GCR, 0x0040);
1619
1620         del_timer_sync(&priv->management_timer);
1621         unregister_netdev(dev);
1622         remove_proc_entry("driver/atmel", NULL);
1623         free_irq(dev->irq, dev);
1624         kfree(priv->firmware);
1625         release_region(dev->base_addr, 32);
1626         free_netdev(dev);
1627 }
1628
1629 EXPORT_SYMBOL(stop_atmel_card);
1630
1631 static int atmel_set_essid(struct net_device *dev,
1632                            struct iw_request_info *info,
1633                            struct iw_point *dwrq,
1634                            char *extra)
1635 {
1636         struct atmel_private *priv = netdev_priv(dev);
1637
1638         /* Check if we asked for `any' */
1639         if (dwrq->flags == 0) {
1640                 priv->connect_to_any_BSS = 1;
1641         } else {
1642                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1643
1644                 priv->connect_to_any_BSS = 0;
1645
1646                 /* Check the size of the string */
1647                 if (dwrq->length > MAX_SSID_LENGTH)
1648                          return -E2BIG;
1649                 if (index != 0)
1650                         return -EINVAL;
1651
1652                 memcpy(priv->new_SSID, extra, dwrq->length);
1653                 priv->new_SSID_size = dwrq->length;
1654         }
1655
1656         return -EINPROGRESS;
1657 }
1658
1659 static int atmel_get_essid(struct net_device *dev,
1660                            struct iw_request_info *info,
1661                            struct iw_point *dwrq,
1662                            char *extra)
1663 {
1664         struct atmel_private *priv = netdev_priv(dev);
1665
1666         /* Get the current SSID */
1667         if (priv->new_SSID_size != 0) {
1668                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1669                 dwrq->length = priv->new_SSID_size;
1670         } else {
1671                 memcpy(extra, priv->SSID, priv->SSID_size);
1672                 dwrq->length = priv->SSID_size;
1673         }
1674
1675         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1676
1677         return 0;
1678 }
1679
1680 static int atmel_get_wap(struct net_device *dev,
1681                          struct iw_request_info *info,
1682                          struct sockaddr *awrq,
1683                          char *extra)
1684 {
1685         struct atmel_private *priv = netdev_priv(dev);
1686         memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1687         awrq->sa_family = ARPHRD_ETHER;
1688
1689         return 0;
1690 }
1691
1692 static int atmel_set_encode(struct net_device *dev,
1693                             struct iw_request_info *info,
1694                             struct iw_point *dwrq,
1695                             char *extra)
1696 {
1697         struct atmel_private *priv = netdev_priv(dev);
1698
1699         /* Basic checking: do we have a key to set ?
1700          * Note : with the new API, it's impossible to get a NULL pointer.
1701          * Therefore, we need to check a key size == 0 instead.
1702          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1703          * when no key is present (only change flags), but older versions
1704          * don't do it. - Jean II */
1705         if (dwrq->length > 0) {
1706                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1707                 int current_index = priv->default_key;
1708                 /* Check the size of the key */
1709                 if (dwrq->length > 13) {
1710                         return -EINVAL;
1711                 }
1712                 /* Check the index (none -> use current) */
1713                 if (index < 0 || index >= 4)
1714                         index = current_index;
1715                 else
1716                         priv->default_key = index;
1717                 /* Set the length */
1718                 if (dwrq->length > 5)
1719                         priv->wep_key_len[index] = 13;
1720                 else
1721                         if (dwrq->length > 0)
1722                                 priv->wep_key_len[index] = 5;
1723                         else
1724                                 /* Disable the key */
1725                                 priv->wep_key_len[index] = 0;
1726                 /* Check if the key is not marked as invalid */
1727                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1728                         /* Cleanup */
1729                         memset(priv->wep_keys[index], 0, 13);
1730                         /* Copy the key in the driver */
1731                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1732                 }
1733                 /* WE specify that if a valid key is set, encryption
1734                  * should be enabled (user may turn it off later)
1735                  * This is also how "iwconfig ethX key on" works */
1736                 if (index == current_index &&
1737                     priv->wep_key_len[index] > 0) {
1738                         priv->wep_is_on = 1;
1739                         priv->exclude_unencrypted = 1;
1740                         if (priv->wep_key_len[index] > 5) {
1741                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1742                                 priv->encryption_level = 2;
1743                         } else {
1744                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1745                                 priv->encryption_level = 1;
1746                         }
1747                 }
1748         } else {
1749                 /* Do we want to just set the transmit key index ? */
1750                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1751                 if (index >= 0 && index < 4) {
1752                         priv->default_key = index;
1753                 } else
1754                         /* Don't complain if only change the mode */
1755                         if (!(dwrq->flags & IW_ENCODE_MODE))
1756                                 return -EINVAL;
1757         }
1758         /* Read the flags */
1759         if (dwrq->flags & IW_ENCODE_DISABLED) {
1760                 priv->wep_is_on = 0;
1761                 priv->encryption_level = 0;
1762                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1763         } else {
1764                 priv->wep_is_on = 1;
1765                 if (priv->wep_key_len[priv->default_key] > 5) {
1766                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1767                         priv->encryption_level = 2;
1768                 } else {
1769                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1770                         priv->encryption_level = 1;
1771                 }
1772         }
1773         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1774                 priv->exclude_unencrypted = 1;
1775         if (dwrq->flags & IW_ENCODE_OPEN)
1776                 priv->exclude_unencrypted = 0;
1777
1778         return -EINPROGRESS;            /* Call commit handler */
1779 }
1780
1781 static int atmel_get_encode(struct net_device *dev,
1782                             struct iw_request_info *info,
1783                             struct iw_point *dwrq,
1784                             char *extra)
1785 {
1786         struct atmel_private *priv = netdev_priv(dev);
1787         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1788
1789         if (!priv->wep_is_on)
1790                 dwrq->flags = IW_ENCODE_DISABLED;
1791         else {
1792                 if (priv->exclude_unencrypted)
1793                         dwrq->flags = IW_ENCODE_RESTRICTED;
1794                 else
1795                         dwrq->flags = IW_ENCODE_OPEN;
1796         }
1797                 /* Which key do we want ? -1 -> tx index */
1798         if (index < 0 || index >= 4)
1799                 index = priv->default_key;
1800         dwrq->flags |= index + 1;
1801         /* Copy the key to the user buffer */
1802         dwrq->length = priv->wep_key_len[index];
1803         if (dwrq->length > 16) {
1804                 dwrq->length = 0;
1805         } else {
1806                 memset(extra, 0, 16);
1807                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1808         }
1809
1810         return 0;
1811 }
1812
1813 static int atmel_set_encodeext(struct net_device *dev,
1814                             struct iw_request_info *info,
1815                             union iwreq_data *wrqu,
1816                             char *extra)
1817 {
1818         struct atmel_private *priv = netdev_priv(dev);
1819         struct iw_point *encoding = &wrqu->encoding;
1820         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1821         int idx, key_len, alg = ext->alg, set_key = 1;
1822
1823         /* Determine and validate the key index */
1824         idx = encoding->flags & IW_ENCODE_INDEX;
1825         if (idx) {
1826                 if (idx < 1 || idx > 4)
1827                         return -EINVAL;
1828                 idx--;
1829         } else
1830                 idx = priv->default_key;
1831
1832         if (encoding->flags & IW_ENCODE_DISABLED)
1833             alg = IW_ENCODE_ALG_NONE;
1834
1835         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1836                 priv->default_key = idx;
1837                 set_key = ext->key_len > 0 ? 1 : 0;
1838         }
1839
1840         if (set_key) {
1841                 /* Set the requested key first */
1842                 switch (alg) {
1843                 case IW_ENCODE_ALG_NONE:
1844                         priv->wep_is_on = 0;
1845                         priv->encryption_level = 0;
1846                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1847                         break;
1848                 case IW_ENCODE_ALG_WEP:
1849                         if (ext->key_len > 5) {
1850                                 priv->wep_key_len[idx] = 13;
1851                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1852                                 priv->encryption_level = 2;
1853                         } else if (ext->key_len > 0) {
1854                                 priv->wep_key_len[idx] = 5;
1855                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1856                                 priv->encryption_level = 1;
1857                         } else {
1858                                 return -EINVAL;
1859                         }
1860                         priv->wep_is_on = 1;
1861                         memset(priv->wep_keys[idx], 0, 13);
1862                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1863                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1864                         break;
1865                 default:
1866                         return -EINVAL;
1867                 }
1868         }
1869
1870         return -EINPROGRESS;
1871 }
1872
1873 static int atmel_get_encodeext(struct net_device *dev,
1874                             struct iw_request_info *info,
1875                             union iwreq_data *wrqu,
1876                             char *extra)
1877 {
1878         struct atmel_private *priv = netdev_priv(dev);
1879         struct iw_point *encoding = &wrqu->encoding;
1880         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1881         int idx, max_key_len;
1882
1883         max_key_len = encoding->length - sizeof(*ext);
1884         if (max_key_len < 0)
1885                 return -EINVAL;
1886
1887         idx = encoding->flags & IW_ENCODE_INDEX;
1888         if (idx) {
1889                 if (idx < 1 || idx > 4)
1890                         return -EINVAL;
1891                 idx--;
1892         } else
1893                 idx = priv->default_key;
1894
1895         encoding->flags = idx + 1;
1896         memset(ext, 0, sizeof(*ext));
1897
1898         if (!priv->wep_is_on) {
1899                 ext->alg = IW_ENCODE_ALG_NONE;
1900                 ext->key_len = 0;
1901                 encoding->flags |= IW_ENCODE_DISABLED;
1902         } else {
1903                 if (priv->encryption_level > 0)
1904                         ext->alg = IW_ENCODE_ALG_WEP;
1905                 else
1906                         return -EINVAL;
1907
1908                 ext->key_len = priv->wep_key_len[idx];
1909                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1910                 encoding->flags |= IW_ENCODE_ENABLED;
1911         }
1912
1913         return 0;
1914 }
1915
1916 static int atmel_set_auth(struct net_device *dev,
1917                                struct iw_request_info *info,
1918                                union iwreq_data *wrqu, char *extra)
1919 {
1920         struct atmel_private *priv = netdev_priv(dev);
1921         struct iw_param *param = &wrqu->param;
1922
1923         switch (param->flags & IW_AUTH_INDEX) {
1924         case IW_AUTH_WPA_VERSION:
1925         case IW_AUTH_CIPHER_PAIRWISE:
1926         case IW_AUTH_CIPHER_GROUP:
1927         case IW_AUTH_KEY_MGMT:
1928         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1929         case IW_AUTH_PRIVACY_INVOKED:
1930                 /*
1931                  * atmel does not use these parameters
1932                  */
1933                 break;
1934
1935         case IW_AUTH_DROP_UNENCRYPTED:
1936                 priv->exclude_unencrypted = param->value ? 1 : 0;
1937                 break;
1938
1939         case IW_AUTH_80211_AUTH_ALG: {
1940                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1941                                 priv->exclude_unencrypted = 1;
1942                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1943                                 priv->exclude_unencrypted = 0;
1944                         } else
1945                                 return -EINVAL;
1946                         break;
1947                 }
1948
1949         case IW_AUTH_WPA_ENABLED:
1950                 /* Silently accept disable of WPA */
1951                 if (param->value > 0)
1952                         return -EOPNOTSUPP;
1953                 break;
1954
1955         default:
1956                 return -EOPNOTSUPP;
1957         }
1958         return -EINPROGRESS;
1959 }
1960
1961 static int atmel_get_auth(struct net_device *dev,
1962                                struct iw_request_info *info,
1963                                union iwreq_data *wrqu, char *extra)
1964 {
1965         struct atmel_private *priv = netdev_priv(dev);
1966         struct iw_param *param = &wrqu->param;
1967
1968         switch (param->flags & IW_AUTH_INDEX) {
1969         case IW_AUTH_DROP_UNENCRYPTED:
1970                 param->value = priv->exclude_unencrypted;
1971                 break;
1972
1973         case IW_AUTH_80211_AUTH_ALG:
1974                 if (priv->exclude_unencrypted == 1)
1975                         param->value = IW_AUTH_ALG_SHARED_KEY;
1976                 else
1977                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1978                 break;
1979
1980         case IW_AUTH_WPA_ENABLED:
1981                 param->value = 0;
1982                 break;
1983
1984         default:
1985                 return -EOPNOTSUPP;
1986         }
1987         return 0;
1988 }
1989
1990
1991 static int atmel_get_name(struct net_device *dev,
1992                           struct iw_request_info *info,
1993                           char *cwrq,
1994                           char *extra)
1995 {
1996         strcpy(cwrq, "IEEE 802.11-DS");
1997         return 0;
1998 }
1999
2000 static int atmel_set_rate(struct net_device *dev,
2001                           struct iw_request_info *info,
2002                           struct iw_param *vwrq,
2003                           char *extra)
2004 {
2005         struct atmel_private *priv = netdev_priv(dev);
2006
2007         if (vwrq->fixed == 0) {
2008                 priv->tx_rate = 3;
2009                 priv->auto_tx_rate = 1;
2010         } else {
2011                 priv->auto_tx_rate = 0;
2012
2013                 /* Which type of value ? */
2014                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2015                         /* Setting by rate index */
2016                         priv->tx_rate = vwrq->value;
2017                 } else {
2018                 /* Setting by frequency value */
2019                         switch (vwrq->value) {
2020                         case  1000000:
2021                                 priv->tx_rate = 0;
2022                                 break;
2023                         case  2000000:
2024                                 priv->tx_rate = 1;
2025                                 break;
2026                         case  5500000:
2027                                 priv->tx_rate = 2;
2028                                 break;
2029                         case 11000000:
2030                                 priv->tx_rate = 3;
2031                                 break;
2032                         default:
2033                                 return -EINVAL;
2034                         }
2035                 }
2036         }
2037
2038         return -EINPROGRESS;
2039 }
2040
2041 static int atmel_set_mode(struct net_device *dev,
2042                           struct iw_request_info *info,
2043                           __u32 *uwrq,
2044                           char *extra)
2045 {
2046         struct atmel_private *priv = netdev_priv(dev);
2047
2048         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2049                 return -EINVAL;
2050
2051         priv->operating_mode = *uwrq;
2052         return -EINPROGRESS;
2053 }
2054
2055 static int atmel_get_mode(struct net_device *dev,
2056                           struct iw_request_info *info,
2057                           __u32 *uwrq,
2058                           char *extra)
2059 {
2060         struct atmel_private *priv = netdev_priv(dev);
2061
2062         *uwrq = priv->operating_mode;
2063         return 0;
2064 }
2065
2066 static int atmel_get_rate(struct net_device *dev,
2067                          struct iw_request_info *info,
2068                          struct iw_param *vwrq,
2069                          char *extra)
2070 {
2071         struct atmel_private *priv = netdev_priv(dev);
2072
2073         if (priv->auto_tx_rate) {
2074                 vwrq->fixed = 0;
2075                 vwrq->value = 11000000;
2076         } else {
2077                 vwrq->fixed = 1;
2078                 switch (priv->tx_rate) {
2079                 case 0:
2080                         vwrq->value =  1000000;
2081                         break;
2082                 case 1:
2083                         vwrq->value =  2000000;
2084                         break;
2085                 case 2:
2086                         vwrq->value =  5500000;
2087                         break;
2088                 case 3:
2089                         vwrq->value = 11000000;
2090                         break;
2091                 }
2092         }
2093         return 0;
2094 }
2095
2096 static int atmel_set_power(struct net_device *dev,
2097                            struct iw_request_info *info,
2098                            struct iw_param *vwrq,
2099                            char *extra)
2100 {
2101         struct atmel_private *priv = netdev_priv(dev);
2102         priv->power_mode = vwrq->disabled ? 0 : 1;
2103         return -EINPROGRESS;
2104 }
2105
2106 static int atmel_get_power(struct net_device *dev,
2107                            struct iw_request_info *info,
2108                            struct iw_param *vwrq,
2109                            char *extra)
2110 {
2111         struct atmel_private *priv = netdev_priv(dev);
2112         vwrq->disabled = priv->power_mode ? 0 : 1;
2113         vwrq->flags = IW_POWER_ON;
2114         return 0;
2115 }
2116
2117 static int atmel_set_retry(struct net_device *dev,
2118                            struct iw_request_info *info,
2119                            struct iw_param *vwrq,
2120                            char *extra)
2121 {
2122         struct atmel_private *priv = netdev_priv(dev);
2123
2124         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2125                 if (vwrq->flags & IW_RETRY_LONG)
2126                         priv->long_retry = vwrq->value;
2127                 else if (vwrq->flags & IW_RETRY_SHORT)
2128                         priv->short_retry = vwrq->value;
2129                 else {
2130                         /* No modifier : set both */
2131                         priv->long_retry = vwrq->value;
2132                         priv->short_retry = vwrq->value;
2133                 }
2134                 return -EINPROGRESS;
2135         }
2136
2137         return -EINVAL;
2138 }
2139
2140 static int atmel_get_retry(struct net_device *dev,
2141                            struct iw_request_info *info,
2142                            struct iw_param *vwrq,
2143                            char *extra)
2144 {
2145         struct atmel_private *priv = netdev_priv(dev);
2146
2147         vwrq->disabled = 0;      /* Can't be disabled */
2148
2149         /* Note : by default, display the short retry number */
2150         if (vwrq->flags & IW_RETRY_LONG) {
2151                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2152                 vwrq->value = priv->long_retry;
2153         } else {
2154                 vwrq->flags = IW_RETRY_LIMIT;
2155                 vwrq->value = priv->short_retry;
2156                 if (priv->long_retry != priv->short_retry)
2157                         vwrq->flags |= IW_RETRY_SHORT;
2158         }
2159
2160         return 0;
2161 }
2162
2163 static int atmel_set_rts(struct net_device *dev,
2164                          struct iw_request_info *info,
2165                          struct iw_param *vwrq,
2166                          char *extra)
2167 {
2168         struct atmel_private *priv = netdev_priv(dev);
2169         int rthr = vwrq->value;
2170
2171         if (vwrq->disabled)
2172                 rthr = 2347;
2173         if ((rthr < 0) || (rthr > 2347)) {
2174                 return -EINVAL;
2175         }
2176         priv->rts_threshold = rthr;
2177
2178         return -EINPROGRESS;            /* Call commit handler */
2179 }
2180
2181 static int atmel_get_rts(struct net_device *dev,
2182                          struct iw_request_info *info,
2183                          struct iw_param *vwrq,
2184                          char *extra)
2185 {
2186         struct atmel_private *priv = netdev_priv(dev);
2187
2188         vwrq->value = priv->rts_threshold;
2189         vwrq->disabled = (vwrq->value >= 2347);
2190         vwrq->fixed = 1;
2191
2192         return 0;
2193 }
2194
2195 static int atmel_set_frag(struct net_device *dev,
2196                           struct iw_request_info *info,
2197                           struct iw_param *vwrq,
2198                           char *extra)
2199 {
2200         struct atmel_private *priv = netdev_priv(dev);
2201         int fthr = vwrq->value;
2202
2203         if (vwrq->disabled)
2204                 fthr = 2346;
2205         if ((fthr < 256) || (fthr > 2346)) {
2206                 return -EINVAL;
2207         }
2208         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2209         priv->frag_threshold = fthr;
2210
2211         return -EINPROGRESS;            /* Call commit handler */
2212 }
2213
2214 static int atmel_get_frag(struct net_device *dev,
2215                           struct iw_request_info *info,
2216                           struct iw_param *vwrq,
2217                           char *extra)
2218 {
2219         struct atmel_private *priv = netdev_priv(dev);
2220
2221         vwrq->value = priv->frag_threshold;
2222         vwrq->disabled = (vwrq->value >= 2346);
2223         vwrq->fixed = 1;
2224
2225         return 0;
2226 }
2227
2228 static int atmel_set_freq(struct net_device *dev,
2229                           struct iw_request_info *info,
2230                           struct iw_freq *fwrq,
2231                           char *extra)
2232 {
2233         struct atmel_private *priv = netdev_priv(dev);
2234         int rc = -EINPROGRESS;          /* Call commit handler */
2235
2236         /* If setting by frequency, convert to a channel */
2237         if (fwrq->e == 1) {
2238                 int f = fwrq->m / 100000;
2239
2240                 /* Hack to fall through... */
2241                 fwrq->e = 0;
2242                 fwrq->m = ieee80211_frequency_to_channel(f);
2243         }
2244         /* Setting by channel number */
2245         if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2246                 rc = -EOPNOTSUPP;
2247         else {
2248                 int channel = fwrq->m;
2249                 if (atmel_validate_channel(priv, channel) == 0) {
2250                         priv->channel = channel;
2251                 } else {
2252                         rc = -EINVAL;
2253                 }
2254         }
2255         return rc;
2256 }
2257
2258 static int atmel_get_freq(struct net_device *dev,
2259                           struct iw_request_info *info,
2260                           struct iw_freq *fwrq,
2261                           char *extra)
2262 {
2263         struct atmel_private *priv = netdev_priv(dev);
2264
2265         fwrq->m = priv->channel;
2266         fwrq->e = 0;
2267         return 0;
2268 }
2269
2270 static int atmel_set_scan(struct net_device *dev,
2271                           struct iw_request_info *info,
2272                           struct iw_point *dwrq,
2273                           char *extra)
2274 {
2275         struct atmel_private *priv = netdev_priv(dev);
2276         unsigned long flags;
2277
2278         /* Note : you may have realised that, as this is a SET operation,
2279          * this is privileged and therefore a normal user can't
2280          * perform scanning.
2281          * This is not an error, while the device perform scanning,
2282          * traffic doesn't flow, so it's a perfect DoS...
2283          * Jean II */
2284
2285         if (priv->station_state == STATION_STATE_DOWN)
2286                 return -EAGAIN;
2287
2288         /* Timeout old surveys. */
2289         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2290                 priv->site_survey_state = SITE_SURVEY_IDLE;
2291         priv->last_survey = jiffies;
2292
2293         /* Initiate a scan command */
2294         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2295                 return -EBUSY;
2296
2297         del_timer_sync(&priv->management_timer);
2298         spin_lock_irqsave(&priv->irqlock, flags);
2299
2300         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2301         priv->fast_scan = 0;
2302         atmel_scan(priv, 0);
2303         spin_unlock_irqrestore(&priv->irqlock, flags);
2304
2305         return 0;
2306 }
2307
2308 static int atmel_get_scan(struct net_device *dev,
2309                           struct iw_request_info *info,
2310                           struct iw_point *dwrq,
2311                           char *extra)
2312 {
2313         struct atmel_private *priv = netdev_priv(dev);
2314         int i;
2315         char *current_ev = extra;
2316         struct iw_event iwe;
2317
2318         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2319                 return -EAGAIN;
2320
2321         for (i = 0; i < priv->BSS_list_entries; i++) {
2322                 iwe.cmd = SIOCGIWAP;
2323                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2324                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2325                 current_ev = iwe_stream_add_event(info, current_ev,
2326                                                   extra + IW_SCAN_MAX_DATA,
2327                                                   &iwe, IW_EV_ADDR_LEN);
2328
2329                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2330                 if (iwe.u.data.length > 32)
2331                         iwe.u.data.length = 32;
2332                 iwe.cmd = SIOCGIWESSID;
2333                 iwe.u.data.flags = 1;
2334                 current_ev = iwe_stream_add_point(info, current_ev,
2335                                                   extra + IW_SCAN_MAX_DATA,
2336                                                   &iwe, priv->BSSinfo[i].SSID);
2337
2338                 iwe.cmd = SIOCGIWMODE;
2339                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2340                 current_ev = iwe_stream_add_event(info, current_ev,
2341                                                   extra + IW_SCAN_MAX_DATA,
2342                                                   &iwe, IW_EV_UINT_LEN);
2343
2344                 iwe.cmd = SIOCGIWFREQ;
2345                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2346                 iwe.u.freq.e = 0;
2347                 current_ev = iwe_stream_add_event(info, current_ev,
2348                                                   extra + IW_SCAN_MAX_DATA,
2349                                                   &iwe, IW_EV_FREQ_LEN);
2350
2351                 /* Add quality statistics */
2352                 iwe.cmd = IWEVQUAL;
2353                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2354                 iwe.u.qual.qual  = iwe.u.qual.level;
2355                 /* iwe.u.qual.noise  = SOMETHING */
2356                 current_ev = iwe_stream_add_event(info, current_ev,
2357                                                   extra + IW_SCAN_MAX_DATA,
2358                                                   &iwe, IW_EV_QUAL_LEN);
2359
2360
2361                 iwe.cmd = SIOCGIWENCODE;
2362                 if (priv->BSSinfo[i].UsingWEP)
2363                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2364                 else
2365                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2366                 iwe.u.data.length = 0;
2367                 current_ev = iwe_stream_add_point(info, current_ev,
2368                                                   extra + IW_SCAN_MAX_DATA,
2369                                                   &iwe, NULL);
2370         }
2371
2372         /* Length of data */
2373         dwrq->length = (current_ev - extra);
2374         dwrq->flags = 0;
2375
2376         return 0;
2377 }
2378
2379 static int atmel_get_range(struct net_device *dev,
2380                            struct iw_request_info *info,
2381                            struct iw_point *dwrq,
2382                            char *extra)
2383 {
2384         struct atmel_private *priv = netdev_priv(dev);
2385         struct iw_range *range = (struct iw_range *) extra;
2386         int k, i, j;
2387
2388         dwrq->length = sizeof(struct iw_range);
2389         memset(range, 0, sizeof(struct iw_range));
2390         range->min_nwid = 0x0000;
2391         range->max_nwid = 0x0000;
2392         range->num_channels = 0;
2393         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2394                 if (priv->reg_domain == channel_table[j].reg_domain) {
2395                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2396                         break;
2397                 }
2398         if (range->num_channels != 0) {
2399                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2400                         range->freq[k].i = i; /* List index */
2401
2402                         /* Values in MHz -> * 10^5 * 10 */
2403                         range->freq[k].m = 100000 *
2404                          ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2405                         range->freq[k++].e = 1;
2406                 }
2407                 range->num_frequency = k;
2408         }
2409
2410         range->max_qual.qual = 100;
2411         range->max_qual.level = 100;
2412         range->max_qual.noise = 0;
2413         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2414
2415         range->avg_qual.qual = 50;
2416         range->avg_qual.level = 50;
2417         range->avg_qual.noise = 0;
2418         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2419
2420         range->sensitivity = 0;
2421
2422         range->bitrate[0] =  1000000;
2423         range->bitrate[1] =  2000000;
2424         range->bitrate[2] =  5500000;
2425         range->bitrate[3] = 11000000;
2426         range->num_bitrates = 4;
2427
2428         range->min_rts = 0;
2429         range->max_rts = 2347;
2430         range->min_frag = 256;
2431         range->max_frag = 2346;
2432
2433         range->encoding_size[0] = 5;
2434         range->encoding_size[1] = 13;
2435         range->num_encoding_sizes = 2;
2436         range->max_encoding_tokens = 4;
2437
2438         range->pmp_flags = IW_POWER_ON;
2439         range->pmt_flags = IW_POWER_ON;
2440         range->pm_capa = 0;
2441
2442         range->we_version_source = WIRELESS_EXT;
2443         range->we_version_compiled = WIRELESS_EXT;
2444         range->retry_capa = IW_RETRY_LIMIT ;
2445         range->retry_flags = IW_RETRY_LIMIT;
2446         range->r_time_flags = 0;
2447         range->min_retry = 1;
2448         range->max_retry = 65535;
2449
2450         return 0;
2451 }
2452
2453 static int atmel_set_wap(struct net_device *dev,
2454                          struct iw_request_info *info,
2455                          struct sockaddr *awrq,
2456                          char *extra)
2457 {
2458         struct atmel_private *priv = netdev_priv(dev);
2459         int i;
2460         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2461         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2462         unsigned long flags;
2463
2464         if (awrq->sa_family != ARPHRD_ETHER)
2465                 return -EINVAL;
2466
2467         if (!memcmp(any, awrq->sa_data, 6) ||
2468             !memcmp(off, awrq->sa_data, 6)) {
2469                 del_timer_sync(&priv->management_timer);
2470                 spin_lock_irqsave(&priv->irqlock, flags);
2471                 atmel_scan(priv, 1);
2472                 spin_unlock_irqrestore(&priv->irqlock, flags);
2473                 return 0;
2474         }
2475
2476         for (i = 0; i < priv->BSS_list_entries; i++) {
2477                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2478                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2479                                 return -EINVAL;
2480                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2481                                 return -EINVAL;
2482                         } else {
2483                                 del_timer_sync(&priv->management_timer);
2484                                 spin_lock_irqsave(&priv->irqlock, flags);
2485                                 atmel_join_bss(priv, i);
2486                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2487                                 return 0;
2488                         }
2489                 }
2490         }
2491
2492         return -EINVAL;
2493 }
2494
2495 static int atmel_config_commit(struct net_device *dev,
2496                                struct iw_request_info *info,    /* NULL */
2497                                void *zwrq,                      /* NULL */
2498                                char *extra)                     /* NULL */
2499 {
2500         return atmel_open(dev);
2501 }
2502
2503 static const iw_handler atmel_handler[] =
2504 {
2505         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2506         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2507         (iw_handler) NULL,                      /* SIOCSIWNWID */
2508         (iw_handler) NULL,                      /* SIOCGIWNWID */
2509         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2510         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2511         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2512         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2513         (iw_handler) NULL,                      /* SIOCSIWSENS */
2514         (iw_handler) NULL,                      /* SIOCGIWSENS */
2515         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2516         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2517         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2518         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2519         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2520         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2521         (iw_handler) NULL,                      /* SIOCSIWSPY */
2522         (iw_handler) NULL,                      /* SIOCGIWSPY */
2523         (iw_handler) NULL,                      /* -- hole -- */
2524         (iw_handler) NULL,                      /* -- hole -- */
2525         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2526         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2527         (iw_handler) NULL,                      /* -- hole -- */
2528         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2529         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2530         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2531         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2532         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2533         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2534         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2535         (iw_handler) NULL,                      /* -- hole -- */
2536         (iw_handler) NULL,                      /* -- hole -- */
2537         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2538         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2539         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2540         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2541         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2542         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2543         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2544         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2545         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2546         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2547         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2548         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2549         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2550         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2551         (iw_handler) NULL,                      /* -- hole -- */
2552         (iw_handler) NULL,                      /* -- hole -- */
2553         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2554         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2555         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2556         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2557         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2558         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2559         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2560 };
2561
2562 static const iw_handler atmel_private_handler[] =
2563 {
2564         NULL,                           /* SIOCIWFIRSTPRIV */
2565 };
2566
2567 struct atmel_priv_ioctl {
2568         char id[32];
2569         unsigned char __user *data;
2570         unsigned short len;
2571 };
2572
2573 #define ATMELFWL        SIOCIWFIRSTPRIV
2574 #define ATMELIDIFC      ATMELFWL + 1
2575 #define ATMELRD         ATMELFWL + 2
2576 #define ATMELMAGIC 0x51807
2577 #define REGDOMAINSZ 20
2578
2579 static const struct iw_priv_args atmel_private_args[] = {
2580         {
2581                 .cmd = ATMELFWL,
2582                 .set_args = IW_PRIV_TYPE_BYTE
2583                                 | IW_PRIV_SIZE_FIXED
2584                                 | sizeof(struct atmel_priv_ioctl),
2585                 .get_args = IW_PRIV_TYPE_NONE,
2586                 .name = "atmelfwl"
2587         }, {
2588                 .cmd = ATMELIDIFC,
2589                 .set_args = IW_PRIV_TYPE_NONE,
2590                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2591                 .name = "atmelidifc"
2592         }, {
2593                 .cmd = ATMELRD,
2594                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2595                 .get_args = IW_PRIV_TYPE_NONE,
2596                 .name = "regdomain"
2597         },
2598 };
2599
2600 static const struct iw_handler_def atmel_handler_def = {
2601         .num_standard   = ARRAY_SIZE(atmel_handler),
2602         .num_private    = ARRAY_SIZE(atmel_private_handler),
2603         .num_private_args = ARRAY_SIZE(atmel_private_args),
2604         .standard       = (iw_handler *) atmel_handler,
2605         .private        = (iw_handler *) atmel_private_handler,
2606         .private_args   = (struct iw_priv_args *) atmel_private_args,
2607         .get_wireless_stats = atmel_get_wireless_stats
2608 };
2609
2610 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2611 {
2612         int i, rc = 0;
2613         struct atmel_private *priv = netdev_priv(dev);
2614         struct atmel_priv_ioctl com;
2615         struct iwreq *wrq = (struct iwreq *) rq;
2616         unsigned char *new_firmware;
2617         char domain[REGDOMAINSZ + 1];
2618
2619         switch (cmd) {
2620         case ATMELIDIFC:
2621                 wrq->u.param.value = ATMELMAGIC;
2622                 break;
2623
2624         case ATMELFWL:
2625                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2626                         rc = -EFAULT;
2627                         break;
2628                 }
2629
2630                 if (!capable(CAP_NET_ADMIN)) {
2631                         rc = -EPERM;
2632                         break;
2633                 }
2634
2635                 new_firmware = memdup_user(com.data, com.len);
2636                 if (IS_ERR(new_firmware)) {
2637                         rc = PTR_ERR(new_firmware);
2638                         break;
2639                 }
2640
2641                 kfree(priv->firmware);
2642
2643                 priv->firmware = new_firmware;
2644                 priv->firmware_length = com.len;
2645                 strncpy(priv->firmware_id, com.id, 31);
2646                 priv->firmware_id[31] = '\0';
2647                 break;
2648
2649         case ATMELRD:
2650                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2651                         rc = -EFAULT;
2652                         break;
2653                 }
2654
2655                 if (!capable(CAP_NET_ADMIN)) {
2656                         rc = -EPERM;
2657                         break;
2658                 }
2659
2660                 domain[REGDOMAINSZ] = 0;
2661                 rc = -EINVAL;
2662                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2663                         if (!strcasecmp(channel_table[i].name, domain)) {
2664                                 priv->config_reg_domain = channel_table[i].reg_domain;
2665                                 rc = 0;
2666                         }
2667                 }
2668
2669                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2670                         rc = atmel_open(dev);
2671                 break;
2672
2673         default:
2674                 rc = -EOPNOTSUPP;
2675         }
2676
2677         return rc;
2678 }
2679
2680 struct auth_body {
2681         __le16 alg;
2682         __le16 trans_seq;
2683         __le16 status;
2684         u8 el_id;
2685         u8 chall_text_len;
2686         u8 chall_text[253];
2687 };
2688
2689 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2690 {
2691         int old_state = priv->station_state;
2692
2693         if (new_state == old_state)
2694                 return;
2695
2696         priv->station_state = new_state;
2697
2698         if (new_state == STATION_STATE_READY) {
2699                 netif_start_queue(priv->dev);
2700                 netif_carrier_on(priv->dev);
2701         }
2702
2703         if (old_state == STATION_STATE_READY) {
2704                 netif_carrier_off(priv->dev);
2705                 if (netif_running(priv->dev))
2706                         netif_stop_queue(priv->dev);
2707                 priv->last_beacon_timestamp = 0;
2708         }
2709 }
2710
2711 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2712 {
2713         struct {
2714                 u8 BSSID[ETH_ALEN];
2715                 u8 SSID[MAX_SSID_LENGTH];
2716                 u8 scan_type;
2717                 u8 channel;
2718                 __le16 BSS_type;
2719                 __le16 min_channel_time;
2720                 __le16 max_channel_time;
2721                 u8 options;
2722                 u8 SSID_size;
2723         } cmd;
2724
2725         eth_broadcast_addr(cmd.BSSID);
2726
2727         if (priv->fast_scan) {
2728                 cmd.SSID_size = priv->SSID_size;
2729                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2730                 cmd.min_channel_time = cpu_to_le16(10);
2731                 cmd.max_channel_time = cpu_to_le16(50);
2732         } else {
2733                 priv->BSS_list_entries = 0;
2734                 cmd.SSID_size = 0;
2735                 cmd.min_channel_time = cpu_to_le16(10);
2736                 cmd.max_channel_time = cpu_to_le16(120);
2737         }
2738
2739         cmd.options = 0;
2740
2741         if (!specific_ssid)
2742                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2743
2744         cmd.channel = (priv->channel & 0x7f);
2745         cmd.scan_type = SCAN_TYPE_ACTIVE;
2746         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2747                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2748
2749         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2750
2751         /* This must come after all hardware access to avoid being messed up
2752            by stuff happening in interrupt context after we leave STATE_DOWN */
2753         atmel_enter_state(priv, STATION_STATE_SCANNING);
2754 }
2755
2756 static void join(struct atmel_private *priv, int type)
2757 {
2758         struct {
2759                 u8 BSSID[6];
2760                 u8 SSID[MAX_SSID_LENGTH];
2761                 u8 BSS_type; /* this is a short in a scan command - weird */
2762                 u8 channel;
2763                 __le16 timeout;
2764                 u8 SSID_size;
2765                 u8 reserved;
2766         } cmd;
2767
2768         cmd.SSID_size = priv->SSID_size;
2769         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2770         memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2771         cmd.channel = (priv->channel & 0x7f);
2772         cmd.BSS_type = type;
2773         cmd.timeout = cpu_to_le16(2000);
2774
2775         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2776 }
2777
2778 static void start(struct atmel_private *priv, int type)
2779 {
2780         struct {
2781                 u8 BSSID[6];
2782                 u8 SSID[MAX_SSID_LENGTH];
2783                 u8 BSS_type;
2784                 u8 channel;
2785                 u8 SSID_size;
2786                 u8 reserved[3];
2787         } cmd;
2788
2789         cmd.SSID_size = priv->SSID_size;
2790         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2791         memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2792         cmd.BSS_type = type;
2793         cmd.channel = (priv->channel & 0x7f);
2794
2795         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2796 }
2797
2798 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2799                                 u8 channel)
2800 {
2801         int rejoin = 0;
2802         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2803                 SHORT_PREAMBLE : LONG_PREAMBLE;
2804
2805         if (priv->preamble != new) {
2806                 priv->preamble = new;
2807                 rejoin = 1;
2808                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2809         }
2810
2811         if (priv->channel != channel) {
2812                 priv->channel = channel;
2813                 rejoin = 1;
2814                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2815         }
2816
2817         if (rejoin) {
2818                 priv->station_is_associated = 0;
2819                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2820
2821                 if (priv->operating_mode == IW_MODE_INFRA)
2822                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2823                 else
2824                         join(priv, BSS_TYPE_AD_HOC);
2825         }
2826 }
2827
2828 static void send_authentication_request(struct atmel_private *priv, u16 system,
2829                                         u8 *challenge, int challenge_len)
2830 {
2831         struct ieee80211_hdr header;
2832         struct auth_body auth;
2833
2834         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2835         header.duration_id = cpu_to_le16(0x8000);
2836         header.seq_ctrl = 0;
2837         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2838         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2839         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2840
2841         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2842                 /* no WEP for authentication frames with TrSeqNo 1 */
2843                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2844
2845         auth.alg = cpu_to_le16(system);
2846
2847         auth.status = 0;
2848         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2849         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2850         priv->CurrentAuthentTransactionSeqNum += 2;
2851
2852         if (challenge_len != 0) {
2853                 auth.el_id = 16; /* challenge_text */
2854                 auth.chall_text_len = challenge_len;
2855                 memcpy(auth.chall_text, challenge, challenge_len);
2856                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2857         } else {
2858                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2859         }
2860 }
2861
2862 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2863 {
2864         u8 *ssid_el_p;
2865         int bodysize;
2866         struct ieee80211_hdr header;
2867         struct ass_req_format {
2868                 __le16 capability;
2869                 __le16 listen_interval;
2870                 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2871                 u8 ssid_el_id;
2872                 u8 ssid_len;
2873                 u8 ssid[MAX_SSID_LENGTH];
2874                 u8 sup_rates_el_id;
2875                 u8 sup_rates_len;
2876                 u8 rates[4];
2877         } body;
2878
2879         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2880                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2881         header.duration_id = cpu_to_le16(0x8000);
2882         header.seq_ctrl = 0;
2883
2884         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2885         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2886         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2887
2888         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2889         if (priv->wep_is_on)
2890                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2891         if (priv->preamble == SHORT_PREAMBLE)
2892                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2893
2894         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2895
2896         /* current AP address - only in reassoc frame */
2897         if (is_reassoc) {
2898                 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2899                 ssid_el_p = &body.ssid_el_id;
2900                 bodysize = 18 + priv->SSID_size;
2901         } else {
2902                 ssid_el_p = &body.ap[0];
2903                 bodysize = 12 + priv->SSID_size;
2904         }
2905
2906         ssid_el_p[0] = WLAN_EID_SSID;
2907         ssid_el_p[1] = priv->SSID_size;
2908         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2909         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2910         ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2911         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2912
2913         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2914 }
2915
2916 static int is_frame_from_current_bss(struct atmel_private *priv,
2917                                      struct ieee80211_hdr *header)
2918 {
2919         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2920                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2921         else
2922                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2923 }
2924
2925 static int retrieve_bss(struct atmel_private *priv)
2926 {
2927         int i;
2928         int max_rssi = -128;
2929         int max_index = -1;
2930
2931         if (priv->BSS_list_entries == 0)
2932                 return -1;
2933
2934         if (priv->connect_to_any_BSS) {
2935                 /* Select a BSS with the max-RSSI but of the same type and of
2936                    the same WEP mode and that it is not marked as 'bad' (i.e.
2937                    we had previously failed to connect to this BSS with the
2938                    settings that we currently use) */
2939                 priv->current_BSS = 0;
2940                 for (i = 0; i < priv->BSS_list_entries; i++) {
2941                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2942                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2943                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2944                             !(priv->BSSinfo[i].channel & 0x80)) {
2945                                 max_rssi = priv->BSSinfo[i].RSSI;
2946                                 priv->current_BSS = max_index = i;
2947                         }
2948                 }
2949                 return max_index;
2950         }
2951
2952         for (i = 0; i < priv->BSS_list_entries; i++) {
2953                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2954                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2955                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2956                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2957                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2958                                 max_rssi = priv->BSSinfo[i].RSSI;
2959                                 max_index = i;
2960                         }
2961                 }
2962         }
2963         return max_index;
2964 }
2965
2966 static void store_bss_info(struct atmel_private *priv,
2967                            struct ieee80211_hdr *header, u16 capability,
2968                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2969                            u8 *ssid, int is_beacon)
2970 {
2971         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2972         int i, index;
2973
2974         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2975                 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
2976                         index = i;
2977
2978         /* If we process a probe and an entry from this BSS exists
2979            we will update the BSS entry with the info from this BSS.
2980            If we process a beacon we will only update RSSI */
2981
2982         if (index == -1) {
2983                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2984                         return;
2985                 index = priv->BSS_list_entries++;
2986                 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
2987                 priv->BSSinfo[index].RSSI = rssi;
2988         } else {
2989                 if (rssi > priv->BSSinfo[index].RSSI)
2990                         priv->BSSinfo[index].RSSI = rssi;
2991                 if (is_beacon)
2992                         return;
2993         }
2994
2995         priv->BSSinfo[index].channel = channel;
2996         priv->BSSinfo[index].beacon_period = beacon_period;
2997         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2998         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2999         priv->BSSinfo[index].SSIDsize = ssid_len;
3000
3001         if (capability & WLAN_CAPABILITY_IBSS)
3002                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3003         else if (capability & WLAN_CAPABILITY_ESS)
3004                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3005
3006         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3007                 SHORT_PREAMBLE : LONG_PREAMBLE;
3008 }
3009
3010 static void authenticate(struct atmel_private *priv, u16 frame_len)
3011 {
3012         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3013         u16 status = le16_to_cpu(auth->status);
3014         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3015         u16 system = le16_to_cpu(auth->alg);
3016
3017         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3018                 /* no WEP */
3019                 if (priv->station_was_associated) {
3020                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3021                         send_association_request(priv, 1);
3022                         return;
3023                 } else {
3024                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3025                         send_association_request(priv, 0);
3026                         return;
3027                 }
3028         }
3029
3030         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3031                 int should_associate = 0;
3032                 /* WEP */
3033                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3034                         return;
3035
3036                 if (system == WLAN_AUTH_OPEN) {
3037                         if (trans_seq_no == 0x0002) {
3038                                 should_associate = 1;
3039                         }
3040                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3041                         if (trans_seq_no == 0x0002 &&
3042                             auth->el_id == WLAN_EID_CHALLENGE) {
3043                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3044                                 return;
3045                         } else if (trans_seq_no == 0x0004) {
3046                                 should_associate = 1;
3047                         }
3048                 }
3049
3050                 if (should_associate) {
3051                         if (priv->station_was_associated) {
3052                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3053                                 send_association_request(priv, 1);
3054                                 return;
3055                         } else {
3056                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3057                                 send_association_request(priv, 0);
3058                                 return;
3059                         }
3060                 }
3061         }
3062
3063         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3064                 /* Flip back and forth between WEP auth modes until the max
3065                  * authentication tries has been exceeded.
3066                  */
3067                 if (system == WLAN_AUTH_OPEN) {
3068                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3069                         priv->exclude_unencrypted = 1;
3070                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3071                         return;
3072                 } else if (system == WLAN_AUTH_SHARED_KEY
3073                            && priv->wep_is_on) {
3074                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3075                         priv->exclude_unencrypted = 0;
3076                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3077                         return;
3078                 } else if (priv->connect_to_any_BSS) {
3079                         int bss_index;
3080
3081                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3082
3083                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3084                                 atmel_join_bss(priv, bss_index);
3085                                 return;
3086                         }
3087                 }
3088         }
3089
3090         priv->AuthenticationRequestRetryCnt = 0;
3091         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3092         priv->station_is_associated = 0;
3093 }
3094
3095 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3096 {
3097         struct ass_resp_format {
3098                 __le16 capability;
3099                 __le16 status;
3100                 __le16 ass_id;
3101                 u8 el_id;
3102                 u8 length;
3103                 u8 rates[4];
3104         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3105
3106         u16 status = le16_to_cpu(ass_resp->status);
3107         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3108         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3109
3110         union iwreq_data wrqu;
3111
3112         if (frame_len < 8 + rates_len)
3113                 return;
3114
3115         if (status == WLAN_STATUS_SUCCESS) {
3116                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3117                         priv->AssociationRequestRetryCnt = 0;
3118                 else
3119                         priv->ReAssociationRequestRetryCnt = 0;
3120
3121                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3122                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3123                 atmel_set_mib(priv, Phy_Mib_Type,
3124                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3125                 if (priv->power_mode == 0) {
3126                         priv->listen_interval = 1;
3127                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3128                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3129                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3130                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3131                 } else {
3132                         priv->listen_interval = 2;
3133                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3134                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3135                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3136                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3137                 }
3138
3139                 priv->station_is_associated = 1;
3140                 priv->station_was_associated = 1;
3141                 atmel_enter_state(priv, STATION_STATE_READY);
3142
3143                 /* Send association event to userspace */
3144                 wrqu.data.length = 0;
3145                 wrqu.data.flags = 0;
3146                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3147                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3148                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3149
3150                 return;
3151         }
3152
3153         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3154             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3155             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3156             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3157                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3158                 priv->AssociationRequestRetryCnt++;
3159                 send_association_request(priv, 0);
3160                 return;
3161         }
3162
3163         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3164             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3165             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3166             priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3167                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3168                 priv->ReAssociationRequestRetryCnt++;
3169                 send_association_request(priv, 1);
3170                 return;
3171         }
3172
3173         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3174         priv->station_is_associated = 0;
3175
3176         if (priv->connect_to_any_BSS) {
3177                 int bss_index;
3178                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3179
3180                 if ((bss_index = retrieve_bss(priv)) != -1)
3181                         atmel_join_bss(priv, bss_index);
3182         }
3183 }
3184
3185 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3186 {
3187         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3188
3189         memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3190         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3191
3192         /* The WPA stuff cares about the current AP address */
3193         if (priv->use_wpa)
3194                 build_wpa_mib(priv);
3195
3196         /* When switching to AdHoc turn OFF Power Save if needed */
3197
3198         if (bss->BSStype == IW_MODE_ADHOC &&
3199             priv->operating_mode != IW_MODE_ADHOC &&
3200             priv->power_mode) {
3201                 priv->power_mode = 0;
3202                 priv->listen_interval = 1;
3203                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3204                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3205                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3206                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3207         }
3208
3209         priv->operating_mode = bss->BSStype;
3210         priv->channel = bss->channel & 0x7f;
3211         priv->beacon_period = bss->beacon_period;
3212
3213         if (priv->preamble != bss->preamble) {
3214                 priv->preamble = bss->preamble;
3215                 atmel_set_mib8(priv, Local_Mib_Type,
3216                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3217         }
3218
3219         if (!priv->wep_is_on && bss->UsingWEP) {
3220                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3221                 priv->station_is_associated = 0;
3222                 return;
3223         }
3224
3225         if (priv->wep_is_on && !bss->UsingWEP) {
3226                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3227                 priv->station_is_associated = 0;
3228                 return;
3229         }
3230
3231         atmel_enter_state(priv, STATION_STATE_JOINNING);
3232
3233         if (priv->operating_mode == IW_MODE_INFRA)
3234                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3235         else
3236                 join(priv, BSS_TYPE_AD_HOC);
3237 }
3238
3239 static void restart_search(struct atmel_private *priv)
3240 {
3241         int bss_index;
3242
3243         if (!priv->connect_to_any_BSS) {
3244                 atmel_scan(priv, 1);
3245         } else {
3246                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3247
3248                 if ((bss_index = retrieve_bss(priv)) != -1)
3249                         atmel_join_bss(priv, bss_index);
3250                 else
3251                         atmel_scan(priv, 0);
3252         }
3253 }
3254
3255 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3256 {
3257         u8 old = priv->wstats.qual.level;
3258         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3259
3260         switch (priv->firmware_type) {
3261         case ATMEL_FW_TYPE_502E:
3262                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3263                 break;
3264         default:
3265                 break;
3266         }
3267
3268         rssi = rssi * 100 / max_rssi;
3269         if ((rssi + old) % 2)
3270                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3271         else
3272                 priv->wstats.qual.level = (rssi + old) / 2;
3273         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3274         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3275 }
3276
3277 static void atmel_smooth_qual(struct atmel_private *priv)
3278 {
3279         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3280         while (time_diff--) {
3281                 priv->last_qual += HZ;
3282                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3283                 priv->wstats.qual.qual +=
3284                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3285                 priv->beacons_this_sec = 0;
3286         }
3287         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3288         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3289 }
3290
3291 /* deals with incoming management frames. */
3292 static void atmel_management_frame(struct atmel_private *priv,
3293                                    struct ieee80211_hdr *header,
3294                                    u16 frame_len, u8 rssi)
3295 {
3296         u16 subtype;
3297
3298         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3299         switch (subtype) {
3300         case IEEE80211_STYPE_BEACON:
3301         case IEEE80211_STYPE_PROBE_RESP:
3302
3303                 /* beacon frame has multiple variable-length fields -
3304                    never let an engineer loose with a data structure design. */
3305                 {
3306                         struct beacon_format {
3307                                 __le64 timestamp;
3308                                 __le16 interval;
3309                                 __le16 capability;
3310                                 u8 ssid_el_id;
3311                                 u8 ssid_length;
3312                                 /* ssid here */
3313                                 u8 rates_el_id;
3314                                 u8 rates_length;
3315                                 /* rates here */
3316                                 u8 ds_el_id;
3317                                 u8 ds_length;
3318                                 /* ds here */
3319                         } *beacon = (struct beacon_format *)priv->rx_buf;
3320
3321                         u8 channel, rates_length, ssid_length;
3322                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3323                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3324                         u16 capability = le16_to_cpu(beacon->capability);
3325                         u8 *beaconp = priv->rx_buf;
3326                         ssid_length = beacon->ssid_length;
3327                         /* this blows chunks. */
3328                         if (frame_len < 14 || frame_len < ssid_length + 15)
3329                                 return;
3330                         rates_length = beaconp[beacon->ssid_length + 15];
3331                         if (frame_len < ssid_length + rates_length + 18)
3332                                 return;
3333                         if (ssid_length >  MAX_SSID_LENGTH)
3334                                 return;
3335                         channel = beaconp[ssid_length + rates_length + 18];
3336
3337                         if (priv->station_state == STATION_STATE_READY) {
3338                                 smooth_rssi(priv, rssi);
3339                                 if (is_frame_from_current_bss(priv, header)) {
3340                                         priv->beacons_this_sec++;
3341                                         atmel_smooth_qual(priv);
3342                                         if (priv->last_beacon_timestamp) {
3343                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3344                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3345                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3346                                                 if (beacons > 1)
3347                                                         priv->wstats.miss.beacon += beacons - 1;
3348                                         }
3349                                         priv->last_beacon_timestamp = timestamp;
3350                                         handle_beacon_probe(priv, capability, channel);
3351                                 }
3352                         }
3353
3354                         if (priv->station_state == STATION_STATE_SCANNING)
3355                                 store_bss_info(priv, header, capability,
3356                                                beacon_interval, channel, rssi,
3357                                                ssid_length,
3358                                                &beacon->rates_el_id,
3359                                                subtype == IEEE80211_STYPE_BEACON);
3360                 }
3361                 break;
3362
3363         case IEEE80211_STYPE_AUTH:
3364
3365                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3366                         authenticate(priv, frame_len);
3367
3368                 break;
3369
3370         case IEEE80211_STYPE_ASSOC_RESP:
3371         case IEEE80211_STYPE_REASSOC_RESP:
3372
3373                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3374                     priv->station_state == STATION_STATE_REASSOCIATING)
3375                         associate(priv, frame_len, subtype);
3376
3377                 break;
3378
3379         case IEEE80211_STYPE_DISASSOC:
3380                 if (priv->station_is_associated &&
3381                     priv->operating_mode == IW_MODE_INFRA &&
3382                     is_frame_from_current_bss(priv, header)) {
3383                         priv->station_was_associated = 0;
3384                         priv->station_is_associated = 0;
3385
3386                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3387                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3388                 }
3389
3390                 break;
3391
3392         case IEEE80211_STYPE_DEAUTH:
3393                 if (priv->operating_mode == IW_MODE_INFRA &&
3394                     is_frame_from_current_bss(priv, header)) {
3395                         priv->station_was_associated = 0;
3396
3397                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3398                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3399                 }
3400
3401                 break;
3402         }
3403 }
3404
3405 /* run when timer expires */
3406 static void atmel_management_timer(struct timer_list *t)
3407 {
3408         struct atmel_private *priv = from_timer(priv, t, management_timer);
3409         unsigned long flags;
3410
3411         /* Check if the card has been yanked. */
3412         if (priv->card && priv->present_callback &&
3413                 !(*priv->present_callback)(priv->card))
3414                 return;
3415
3416         spin_lock_irqsave(&priv->irqlock, flags);
3417
3418         switch (priv->station_state) {
3419
3420         case STATION_STATE_AUTHENTICATING:
3421                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3422                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3423                         priv->station_is_associated = 0;
3424                         priv->AuthenticationRequestRetryCnt = 0;
3425                         restart_search(priv);
3426                 } else {
3427                         int auth = WLAN_AUTH_OPEN;
3428                         priv->AuthenticationRequestRetryCnt++;
3429                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3430                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3431                         if (priv->wep_is_on && priv->exclude_unencrypted)
3432                                 auth = WLAN_AUTH_SHARED_KEY;
3433                         send_authentication_request(priv, auth, NULL, 0);
3434           }
3435           break;
3436
3437         case STATION_STATE_ASSOCIATING:
3438                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3439                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3440                         priv->station_is_associated = 0;
3441                         priv->AssociationRequestRetryCnt = 0;
3442                         restart_search(priv);
3443                 } else {
3444                         priv->AssociationRequestRetryCnt++;
3445                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3446                         send_association_request(priv, 0);
3447                 }
3448           break;
3449
3450         case STATION_STATE_REASSOCIATING:
3451                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3452                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3453                         priv->station_is_associated = 0;
3454                         priv->ReAssociationRequestRetryCnt = 0;
3455                         restart_search(priv);
3456                 } else {
3457                         priv->ReAssociationRequestRetryCnt++;
3458                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3459                         send_association_request(priv, 1);
3460                 }
3461                 break;
3462
3463         default:
3464                 break;
3465         }
3466
3467         spin_unlock_irqrestore(&priv->irqlock, flags);
3468 }
3469
3470 static void atmel_command_irq(struct atmel_private *priv)
3471 {
3472         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3473         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3474         int fast_scan;
3475         union iwreq_data wrqu;
3476
3477         if (status == CMD_STATUS_IDLE ||
3478             status == CMD_STATUS_IN_PROGRESS)
3479                 return;
3480
3481         switch (command) {
3482         case CMD_Start:
3483                 if (status == CMD_STATUS_COMPLETE) {
3484                         priv->station_was_associated = priv->station_is_associated;
3485                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3486                                       (u8 *)priv->CurrentBSSID, 6);
3487                         atmel_enter_state(priv, STATION_STATE_READY);
3488                 }
3489                 break;
3490
3491         case CMD_Scan:
3492                 fast_scan = priv->fast_scan;
3493                 priv->fast_scan = 0;
3494
3495                 if (status != CMD_STATUS_COMPLETE) {
3496                         atmel_scan(priv, 1);
3497                 } else {
3498                         int bss_index = retrieve_bss(priv);
3499                         int notify_scan_complete = 1;
3500                         if (bss_index != -1) {
3501                                 atmel_join_bss(priv, bss_index);
3502                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3503                                    priv->SSID_size != 0) {
3504                                 start(priv, BSS_TYPE_AD_HOC);
3505                         } else {
3506                                 priv->fast_scan = !fast_scan;
3507                                 atmel_scan(priv, 1);
3508                                 notify_scan_complete = 0;
3509                         }
3510                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3511                         if (notify_scan_complete) {
3512                                 wrqu.data.length = 0;
3513                                 wrqu.data.flags = 0;
3514                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3515                         }
3516                 }
3517                 break;
3518
3519         case CMD_SiteSurvey:
3520                 priv->fast_scan = 0;
3521
3522                 if (status != CMD_STATUS_COMPLETE)
3523                         return;
3524
3525                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3526                 if (priv->station_is_associated) {
3527                         atmel_enter_state(priv, STATION_STATE_READY);
3528                         wrqu.data.length = 0;
3529                         wrqu.data.flags = 0;
3530                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3531                 } else {
3532                         atmel_scan(priv, 1);
3533                 }
3534                 break;
3535
3536         case CMD_Join:
3537                 if (status == CMD_STATUS_COMPLETE) {
3538                         if (priv->operating_mode == IW_MODE_ADHOC) {
3539                                 priv->station_was_associated = priv->station_is_associated;
3540                                 atmel_enter_state(priv, STATION_STATE_READY);
3541                         } else {
3542                                 int auth = WLAN_AUTH_OPEN;
3543                                 priv->AuthenticationRequestRetryCnt = 0;
3544                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3545
3546                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3547                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3548                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3549                                         auth = WLAN_AUTH_SHARED_KEY;
3550                                 send_authentication_request(priv, auth, NULL, 0);
3551                         }
3552                         return;
3553                 }
3554
3555                 atmel_scan(priv, 1);
3556         }
3557 }
3558
3559 static int atmel_wakeup_firmware(struct atmel_private *priv)
3560 {
3561         struct host_info_struct *iface = &priv->host_info;
3562         u16 mr1, mr3;
3563         int i;
3564
3565         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3566                 atmel_set_gcr(priv->dev, GCR_REMAP);
3567
3568         /* wake up on-board processor */
3569         atmel_clear_gcr(priv->dev, 0x0040);
3570         atmel_write16(priv->dev, BSR, BSS_SRAM);
3571
3572         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3573                 mdelay(100);
3574
3575         /* and wait for it */
3576         for (i = LOOP_RETRY_LIMIT; i; i--) {
3577                 mr1 = atmel_read16(priv->dev, MR1);
3578                 mr3 = atmel_read16(priv->dev, MR3);
3579
3580                 if (mr3 & MAC_BOOT_COMPLETE)
3581                         break;
3582                 if (mr1 & MAC_BOOT_COMPLETE &&
3583                     priv->bus_type == BUS_TYPE_PCCARD)
3584                         break;
3585         }
3586
3587         if (i == 0) {
3588                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3589                 return -EIO;
3590         }
3591
3592         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3593                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3594                 return -ENODEV;
3595         }
3596
3597         /* now check for completion of MAC initialization through
3598            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3599            MAC initialization, check completion status, set interrupt mask,
3600            enables interrupts and calls Tx and Rx initialization functions */
3601
3602         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3603
3604         for (i = LOOP_RETRY_LIMIT; i; i--) {
3605                 mr1 = atmel_read16(priv->dev, MR1);
3606                 mr3 = atmel_read16(priv->dev, MR3);
3607
3608                 if (mr3 & MAC_INIT_COMPLETE)
3609                         break;
3610                 if (mr1 & MAC_INIT_COMPLETE &&
3611                     priv->bus_type == BUS_TYPE_PCCARD)
3612                         break;
3613         }
3614
3615         if (i == 0) {
3616                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3617                                 priv->dev->name);
3618                 return -EIO;
3619         }
3620
3621         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3622         if ((mr3 & MAC_INIT_COMPLETE) &&
3623             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3624                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3625                 return -EIO;
3626         }
3627         if ((mr1 & MAC_INIT_COMPLETE) &&
3628             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3629                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3630                 return -EIO;
3631         }
3632
3633         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3634                            priv->host_info_base, sizeof(*iface));
3635
3636         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3637         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3638         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3639         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3640         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3641         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3642         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3643         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3644         iface->build_version = le16_to_cpu(iface->build_version);
3645         iface->command_pos = le16_to_cpu(iface->command_pos);
3646         iface->major_version = le16_to_cpu(iface->major_version);
3647         iface->minor_version = le16_to_cpu(iface->minor_version);
3648         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3649         iface->mac_status = le16_to_cpu(iface->mac_status);
3650
3651         return 0;
3652 }
3653
3654 /* determine type of memory and MAC address */
3655 static int probe_atmel_card(struct net_device *dev)
3656 {
3657         int rc = 0;
3658         struct atmel_private *priv = netdev_priv(dev);
3659
3660         /* reset pccard */
3661         if (priv->bus_type == BUS_TYPE_PCCARD)
3662                 atmel_write16(dev, GCR, 0x0060);
3663
3664         atmel_write16(dev, GCR, 0x0040);
3665         msleep(500);
3666
3667         if (atmel_read16(dev, MR2) == 0) {
3668                 /* No stored firmware so load a small stub which just
3669                    tells us the MAC address */
3670                 int i;
3671                 priv->card_type = CARD_TYPE_EEPROM;
3672                 atmel_write16(dev, BSR, BSS_IRAM);
3673                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3674                 atmel_set_gcr(dev, GCR_REMAP);
3675                 atmel_clear_gcr(priv->dev, 0x0040);
3676                 atmel_write16(dev, BSR, BSS_SRAM);
3677                 for (i = LOOP_RETRY_LIMIT; i; i--)
3678                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3679                                 break;
3680                 if (i == 0) {
3681                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3682                 } else {
3683                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3684                         /* got address, now squash it again until the network
3685                            interface is opened */
3686                         if (priv->bus_type == BUS_TYPE_PCCARD)
3687                                 atmel_write16(dev, GCR, 0x0060);
3688                         atmel_write16(dev, GCR, 0x0040);
3689                         rc = 1;
3690                 }
3691         } else if (atmel_read16(dev, MR4) == 0) {
3692                 /* Mac address easy in this case. */
3693                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3694                 atmel_write16(dev,  BSR, 1);
3695                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3696                 atmel_write16(dev,  BSR, 0x200);
3697                 rc = 1;
3698         } else {
3699                 /* Standard firmware in flash, boot it up and ask
3700                    for the Mac Address */
3701                 priv->card_type = CARD_TYPE_SPI_FLASH;
3702                 if (atmel_wakeup_firmware(priv) == 0) {
3703                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3704
3705                         /* got address, now squash it again until the network
3706                            interface is opened */
3707                         if (priv->bus_type == BUS_TYPE_PCCARD)
3708                                 atmel_write16(dev, GCR, 0x0060);
3709                         atmel_write16(dev, GCR, 0x0040);
3710                         rc = 1;
3711                 }
3712         }
3713
3714         if (rc) {
3715                 if (dev->dev_addr[0] == 0xFF) {
3716                         static const u8 default_mac[] = {
3717                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3718                         };
3719                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3720                         memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3721                 }
3722         }
3723
3724         return rc;
3725 }
3726
3727 /* Move the encyption information on the MIB structure.
3728    This routine is for the pre-WPA firmware: later firmware has
3729    a different format MIB and a different routine. */
3730 static void build_wep_mib(struct atmel_private *priv)
3731 {
3732         struct { /* NB this is matched to the hardware, don't change. */
3733                 u8 wep_is_on;
3734                 u8 default_key; /* 0..3 */
3735                 u8 reserved;
3736                 u8 exclude_unencrypted;
3737
3738                 u32 WEPICV_error_count;
3739                 u32 WEP_excluded_count;
3740
3741                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3742                 u8 encryption_level; /* 0, 1, 2 */
3743                 u8 reserved2[3];
3744         } mib;
3745         int i;
3746
3747         mib.wep_is_on = priv->wep_is_on;
3748         if (priv->wep_is_on) {
3749                 if (priv->wep_key_len[priv->default_key] > 5)
3750                         mib.encryption_level = 2;
3751                 else
3752                         mib.encryption_level = 1;
3753         } else {
3754                 mib.encryption_level = 0;
3755         }
3756
3757         mib.default_key = priv->default_key;
3758         mib.exclude_unencrypted = priv->exclude_unencrypted;
3759
3760         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3761                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3762
3763         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3764 }
3765
3766 static void build_wpa_mib(struct atmel_private *priv)
3767 {
3768         /* This is for the later (WPA enabled) firmware. */
3769
3770         struct { /* NB this is matched to the hardware, don't change. */
3771                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3772                 u8 receiver_address[ETH_ALEN];
3773                 u8 wep_is_on;
3774                 u8 default_key; /* 0..3 */
3775                 u8 group_key;
3776                 u8 exclude_unencrypted;
3777                 u8 encryption_type;
3778                 u8 reserved;
3779
3780                 u32 WEPICV_error_count;
3781                 u32 WEP_excluded_count;
3782
3783                 u8 key_RSC[4][8];
3784         } mib;
3785
3786         int i;
3787
3788         mib.wep_is_on = priv->wep_is_on;
3789         mib.exclude_unencrypted = priv->exclude_unencrypted;
3790         memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3791
3792         /* zero all the keys before adding in valid ones. */
3793         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3794
3795         if (priv->wep_is_on) {
3796                 /* There's a comment in the Atmel code to the effect that this
3797                    is only valid when still using WEP, it may need to be set to
3798                    something to use WPA */
3799                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3800
3801                 mib.default_key = mib.group_key = 255;
3802                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3803                         if (priv->wep_key_len[i] > 0) {
3804                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3805                                 if (i == priv->default_key) {
3806                                         mib.default_key = i;
3807                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3808                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3809                                 } else {
3810                                         mib.group_key = i;
3811                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3812                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3813                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3814                                 }
3815                         }
3816                 }
3817                 if (mib.default_key == 255)
3818                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3819                 if (mib.group_key == 255)
3820                         mib.group_key = mib.default_key;
3821
3822         }
3823
3824         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3825 }
3826
3827 static int reset_atmel_card(struct net_device *dev)
3828 {
3829         /* do everything necessary to wake up the hardware, including
3830            waiting for the lightning strike and throwing the knife switch....
3831
3832            set all the Mib values which matter in the card to match
3833            their settings in the atmel_private structure. Some of these
3834            can be altered on the fly, but many (WEP, infrastructure or ad-hoc)
3835            can only be changed by tearing down the world and coming back through
3836            here.
3837
3838            This routine is also responsible for initialising some
3839            hardware-specific fields in the atmel_private structure,
3840            including a copy of the firmware's hostinfo structure
3841            which is the route into the rest of the firmware datastructures. */
3842
3843         struct atmel_private *priv = netdev_priv(dev);
3844         u8 configuration;
3845         int old_state = priv->station_state;
3846         int err = 0;
3847
3848         /* data to add to the firmware names, in priority order
3849            this implemenents firmware versioning */
3850
3851         static char *firmware_modifier[] = {
3852                 "-wpa",
3853                 "",
3854                 NULL
3855         };
3856
3857         /* reset pccard */
3858         if (priv->bus_type == BUS_TYPE_PCCARD)
3859                 atmel_write16(priv->dev, GCR, 0x0060);
3860
3861         /* stop card , disable interrupts */
3862         atmel_write16(priv->dev, GCR, 0x0040);
3863
3864         if (priv->card_type == CARD_TYPE_EEPROM) {
3865                 /* copy in firmware if needed */
3866                 const struct firmware *fw_entry = NULL;
3867                 const unsigned char *fw;
3868                 int len = priv->firmware_length;
3869                 if (!(fw = priv->firmware)) {
3870                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3871                                 if (strlen(priv->firmware_id) == 0) {
3872                                         printk(KERN_INFO
3873                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3874                                                dev->name);
3875                                         printk(KERN_INFO
3876                                                "%s: if not, use the firmware= module parameter.\n",
3877                                                dev->name);
3878                                         strcpy(priv->firmware_id, "/*(DEBLOBBED)*/");
3879                                 }
3880                                 err = reject_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3881                                 if (err != 0) {
3882                                         printk(KERN_ALERT
3883                                                "%s: firmware %s is missing, cannot continue.\n",
3884                                                dev->name, priv->firmware_id);
3885                                         return err;
3886                                 }
3887                         } else {
3888                                 int fw_index = 0;
3889                                 int success = 0;
3890
3891                                 /* get firmware filename entry based on firmware type ID */
3892                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3893                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3894                                         fw_index++;
3895
3896                                 /* construct the actual firmware file name */
3897                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3898                                         int i;
3899                                         for (i = 0; firmware_modifier[i]; i++) {
3900                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3901                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3902                                                 priv->firmware_id[31] = '\0';
3903                                                 if (reject_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3904                                                         success = 1;
3905                                                         break;
3906                                                 }
3907                                         }
3908                                 }
3909                                 if (!success) {
3910                                         printk(KERN_ALERT
3911                                                "%s: firmware %s is missing, cannot start.\n",
3912                                                dev->name, priv->firmware_id);
3913                                         priv->firmware_id[0] = '\0';
3914                                         return -ENOENT;
3915                                 }
3916                         }
3917
3918                         fw = fw_entry->data;
3919                         len = fw_entry->size;
3920                 }
3921
3922                 if (len <= 0x6000) {
3923                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3924                         atmel_copy_to_card(priv->dev, 0, fw, len);
3925                         atmel_set_gcr(priv->dev, GCR_REMAP);
3926                 } else {
3927                         /* Remap */
3928                         atmel_set_gcr(priv->dev, GCR_REMAP);
3929                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3930                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3931                         atmel_write16(priv->dev, BSR, 0x2ff);
3932                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3933                 }
3934
3935                 release_firmware(fw_entry);
3936         }
3937
3938         err = atmel_wakeup_firmware(priv);
3939         if (err != 0)
3940                 return err;
3941
3942         /* Check the version and set the correct flag for wpa stuff,
3943            old and new firmware is incompatible.
3944            The pre-wpa 3com firmware reports major version 5,
3945            the wpa 3com firmware is major version 4 and doesn't need
3946            the 3com broken-ness filter. */
3947         priv->use_wpa = (priv->host_info.major_version == 4);
3948         priv->radio_on_broken = (priv->host_info.major_version == 5);
3949
3950         /* unmask all irq sources */
3951         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3952
3953         /* int Tx system and enable Tx */
3954         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3955         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3956         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3957         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3958
3959         priv->tx_desc_free = priv->host_info.tx_desc_count;
3960         priv->tx_desc_head = 0;
3961         priv->tx_desc_tail = 0;
3962         priv->tx_desc_previous = 0;
3963         priv->tx_free_mem = priv->host_info.tx_buff_size;
3964         priv->tx_buff_head = 0;
3965         priv->tx_buff_tail = 0;
3966
3967         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3968         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3969                                    configuration | FUNC_CTRL_TxENABLE);
3970
3971         /* init Rx system and enable */
3972         priv->rx_desc_head = 0;
3973
3974         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3975         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3976                                    configuration | FUNC_CTRL_RxENABLE);
3977
3978         if (!priv->radio_on_broken) {
3979                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3980                     CMD_STATUS_REJECTED_RADIO_OFF) {
3981                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
3982                                dev->name);
3983                         return -EIO;
3984                 }
3985         }
3986
3987         /* set up enough MIB values to run. */
3988         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3989         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3990         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3991         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3992         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3993         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3994         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3995         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3996                       priv->dev->dev_addr, 6);
3997         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3998         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3999         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4000         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4001         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4002         if (priv->use_wpa)
4003                 build_wpa_mib(priv);
4004         else
4005                 build_wep_mib(priv);
4006
4007         if (old_state == STATION_STATE_READY) {
4008                 union iwreq_data wrqu;
4009
4010                 wrqu.data.length = 0;
4011                 wrqu.data.flags = 0;
4012                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4013                 eth_zero_addr(wrqu.ap_addr.sa_data);
4014                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4015         }
4016
4017         return 0;
4018 }
4019
4020 static void atmel_send_command(struct atmel_private *priv, int command,
4021                                void *cmd, int cmd_size)
4022 {
4023         if (cmd)
4024                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4025                                    cmd, cmd_size);
4026
4027         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4028         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4029 }
4030
4031 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4032                                    void *cmd, int cmd_size)
4033 {
4034         int i, status;
4035
4036         atmel_send_command(priv, command, cmd, cmd_size);
4037
4038         for (i = 5000; i; i--) {
4039                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4040                 if (status != CMD_STATUS_IDLE &&
4041                     status != CMD_STATUS_IN_PROGRESS)
4042                         break;
4043                 udelay(20);
4044         }
4045
4046         if (i == 0) {
4047                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4048                 status =  CMD_STATUS_HOST_ERROR;
4049         } else {
4050                 if (command != CMD_EnableRadio)
4051                         status = CMD_STATUS_COMPLETE;
4052         }
4053
4054         return status;
4055 }
4056
4057 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4058 {
4059         struct get_set_mib m;
4060         m.type = type;
4061         m.size = 1;
4062         m.index = index;
4063
4064         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4065         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4066 }
4067
4068 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4069 {
4070         struct get_set_mib m;
4071         m.type = type;
4072         m.size = 1;
4073         m.index = index;
4074         m.data[0] = data;
4075
4076         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4077 }
4078
4079 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4080                             u16 data)
4081 {
4082         struct get_set_mib m;
4083         m.type = type;
4084         m.size = 2;
4085         m.index = index;
4086         m.data[0] = data;
4087         m.data[1] = data >> 8;
4088
4089         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4090 }
4091
4092 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4093                           u8 *data, int data_len)
4094 {
4095         struct get_set_mib m;
4096         m.type = type;
4097         m.size = data_len;
4098         m.index = index;
4099
4100         if (data_len > MIB_MAX_DATA_BYTES)
4101                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4102
4103         memcpy(m.data, data, data_len);
4104         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4105 }
4106
4107 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4108                           u8 *data, int data_len)
4109 {
4110         struct get_set_mib m;
4111         m.type = type;
4112         m.size = data_len;
4113         m.index = index;
4114
4115         if (data_len > MIB_MAX_DATA_BYTES)
4116                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4117
4118         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4119         atmel_copy_to_host(priv->dev, data,
4120                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4121 }
4122
4123 static void atmel_writeAR(struct net_device *dev, u16 data)
4124 {
4125         int i;
4126         outw(data, dev->base_addr + AR);
4127         /* Address register appears to need some convincing..... */
4128         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4129                 outw(data, dev->base_addr + AR);
4130 }
4131
4132 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4133                                const unsigned char *src, u16 len)
4134 {
4135         int i;
4136         atmel_writeAR(dev, dest);
4137         if (dest % 2) {
4138                 atmel_write8(dev, DR, *src);
4139                 src++; len--;
4140         }
4141         for (i = len; i > 1 ; i -= 2) {
4142                 u8 lb = *src++;
4143                 u8 hb = *src++;
4144                 atmel_write16(dev, DR, lb | (hb << 8));
4145         }
4146         if (i)
4147                 atmel_write8(dev, DR, *src);
4148 }
4149
4150 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4151                                u16 src, u16 len)
4152 {
4153         int i;
4154         atmel_writeAR(dev, src);
4155         if (src % 2) {
4156                 *dest = atmel_read8(dev, DR);
4157                 dest++; len--;
4158         }
4159         for (i = len; i > 1 ; i -= 2) {
4160                 u16 hw = atmel_read16(dev, DR);
4161                 *dest++ = hw;
4162                 *dest++ = hw >> 8;
4163         }
4164         if (i)
4165                 *dest = atmel_read8(dev, DR);
4166 }
4167
4168 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4169 {
4170         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4171 }
4172
4173 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4174 {
4175         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4176 }
4177
4178 static int atmel_lock_mac(struct atmel_private *priv)
4179 {
4180         int i, j = 20;
4181  retry:
4182         for (i = 5000; i; i--) {
4183                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4184                         break;
4185                 udelay(20);
4186         }
4187
4188         if (!i)
4189                 return 0; /* timed out */
4190
4191         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4192         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4193                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4194                 if (!j--)
4195                         return 0; /* timed out */
4196                 goto retry;
4197         }
4198
4199         return 1;
4200 }
4201
4202 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4203 {
4204         atmel_writeAR(priv->dev, pos);
4205         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4206         atmel_write16(priv->dev, DR, data >> 16);
4207 }
4208
4209 /***************************************************************************/
4210 /* There follows the source form of the MAC address reading firmware       */
4211 /***************************************************************************/
4212 #if 0
4213
4214 /* Copyright 2003 Matthew T. Russotto                                      */
4215 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4216 /* included in "atmel wireless lan drivers" package                        */
4217 /**
4218     This file is part of net.russotto.AtmelMACFW, hereto referred to
4219     as AtmelMACFW
4220
4221     AtmelMACFW is free software; you can redistribute it and/or modify
4222     it under the terms of the GNU General Public License version 2
4223     as published by the Free Software Foundation.
4224
4225     AtmelMACFW is distributed in the hope that it will be useful,
4226     but WITHOUT ANY WARRANTY; without even the implied warranty of
4227     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4228     GNU General Public License for more details.
4229
4230     You should have received a copy of the GNU General Public License
4231     along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4232
4233 ****************************************************************************/
4234 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4235 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4236 /* It only works on SPI EEPROM versions of the card.                       */
4237
4238 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4239 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4240 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4241 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4242 /* MR4, for investigational purposes (maybe we can determine chip type     */
4243 /* from that?)                                                             */
4244
4245         .org 0
4246     .set MRBASE, 0x8000000
4247         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4248         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4249         .set SRAM_BASE,  0x02000000
4250         .set SP_BASE,    0x0F300000
4251         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4252         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4253         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4254         .set STACK_BASE, 0x5600
4255         .set SP_SR, 0x10
4256         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4257         .set SP_RDRF, 1 /* status register bit -- RDR full */
4258         .set SP_SWRST, 0x80
4259         .set SP_SPIEN, 0x1
4260         .set SP_CR, 0   /* control register */
4261         .set SP_MR, 4   /* mode register */
4262         .set SP_RDR, 0x08 /* Read Data Register */
4263         .set SP_TDR, 0x0C /* Transmit Data Register */
4264         .set SP_CSR0, 0x30 /* chip select registers */
4265         .set SP_CSR1, 0x34
4266         .set SP_CSR2, 0x38
4267         .set SP_CSR3, 0x3C
4268         .set NVRAM_CMD_RDSR, 5 /* read status register */
4269         .set NVRAM_CMD_READ, 3 /* read data */
4270         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4271         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4272                                   serial output, since SO is normally high.  But it
4273                                   does cause 8 clock cycles and thus 8 bits to be
4274                                   clocked in to the chip.  See Atmel's SPI
4275                                   controller (e.g. AT91M55800) timing and 4K
4276                                   SPI EEPROM manuals */
4277
4278         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4279         .set NVRAM_IMAGE, 0x02000200
4280         .set NVRAM_LENGTH, 0x0200
4281         .set MAC_ADDRESS_MIB, SRAM_BASE
4282         .set MAC_ADDRESS_LENGTH, 6
4283         .set MAC_BOOT_FLAG, 0x10
4284         .set MR1, 0
4285         .set MR2, 4
4286         .set MR3, 8
4287         .set MR4, 0xC
4288 RESET_VECTOR:
4289         b RESET_HANDLER
4290 UNDEF_VECTOR:
4291         b HALT1
4292 SWI_VECTOR:
4293         b HALT1
4294 IABORT_VECTOR:
4295         b HALT1
4296 DABORT_VECTOR:
4297 RESERVED_VECTOR:
4298         b HALT1
4299 IRQ_VECTOR:
4300         b HALT1
4301 FIQ_VECTOR:
4302         b HALT1
4303 HALT1:  b HALT1
4304 RESET_HANDLER:
4305         mov     r0, #CPSR_INITIAL
4306         msr     CPSR_c, r0      /* This is probably unnecessary */
4307
4308 /* I'm guessing this is initializing clock generator electronics for SPI */
4309         ldr     r0, =SPI_CGEN_BASE
4310         mov     r1, #0
4311         mov     r1, r1, lsl #3
4312         orr     r1, r1, #0
4313         str     r1, [r0]
4314         ldr     r1, [r0, #28]
4315         bic     r1, r1, #16
4316         str     r1, [r0, #28]
4317         mov     r1, #1
4318         str     r1, [r0, #8]
4319
4320         ldr     r0, =MRBASE
4321         mov     r1, #0
4322         strh    r1, [r0, #MR1]
4323         strh    r1, [r0, #MR2]
4324         strh    r1, [r0, #MR3]
4325         strh    r1, [r0, #MR4]
4326
4327         mov     sp, #STACK_BASE
4328         bl      SP_INIT
4329         mov     r0, #10
4330         bl      DELAY9
4331         bl      GET_MAC_ADDR
4332         bl      GET_WHOLE_NVRAM
4333         ldr     r0, =MRBASE
4334         ldr     r1, =MAC_ADDRESS_MIB
4335         strh    r1, [r0, #MR2]
4336         ldr     r1, =NVRAM_IMAGE
4337         strh    r1, [r0, #MR4]
4338         mov     r1, #MAC_BOOT_FLAG
4339         strh    r1, [r0, #MR3]
4340 HALT2:  b HALT2
4341 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4342 GET_WHOLE_NVRAM:
4343         stmdb   sp!, {lr}
4344         mov     r2, #0 /* 0th bytes of NVRAM */
4345         mov     r3, #NVRAM_LENGTH
4346         mov     r1, #0          /* not used in routine */
4347         ldr     r0, =NVRAM_IMAGE
4348         bl      NVRAM_XFER
4349         ldmia   sp!, {lr}
4350         bx      lr
4351 .endfunc
4352
4353 .func Get_MAC_Addr, GET_MAC_ADDR
4354 GET_MAC_ADDR:
4355         stmdb   sp!, {lr}
4356         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4357         mov     r3, #MAC_ADDRESS_LENGTH
4358         mov     r1, #0          /* not used in routine */
4359         ldr     r0, =MAC_ADDRESS_MIB
4360         bl      NVRAM_XFER
4361         ldmia   sp!, {lr}
4362         bx      lr
4363 .endfunc
4364 .ltorg
4365 .func Delay9, DELAY9
4366 DELAY9:
4367         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4368 DELAYLOOP:
4369         beq     DELAY9_done
4370         subs    r0, r0, #1
4371         b       DELAYLOOP
4372 DELAY9_done:
4373         bx      lr
4374 .endfunc
4375
4376 .func SP_Init, SP_INIT
4377 SP_INIT:
4378         mov     r1, #SP_SWRST
4379         ldr     r0, =SP_BASE
4380         str     r1, [r0, #SP_CR] /* reset the SPI */
4381         mov     r1, #0
4382         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4383         mov     r1, #SP_SPIEN
4384         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4385         str     r1, [r0, #SP_CR] /* enable the SPI */
4386
4387 /*  My guess would be this turns on the SPI clock */
4388         ldr     r3, =SPI_CGEN_BASE
4389         ldr     r1, [r3, #28]
4390         orr     r1, r1, #0x2000
4391         str     r1, [r3, #28]
4392
4393         ldr     r1, =0x2000c01
4394         str     r1, [r0, #SP_CSR0]
4395         ldr     r1, =0x2000201
4396         str     r1, [r0, #SP_CSR1]
4397         str     r1, [r0, #SP_CSR2]
4398         str     r1, [r0, #SP_CSR3]
4399         ldr     r1, [r0, #SP_SR]
4400         ldr     r0, [r0, #SP_RDR]
4401         bx      lr
4402 .endfunc
4403 .func NVRAM_Init, NVRAM_INIT
4404 NVRAM_INIT:
4405         ldr     r1, =SP_BASE
4406         ldr     r0, [r1, #SP_RDR]
4407         mov     r0, #NVRAM_CMD_RDSR
4408         str     r0, [r1, #SP_TDR]
4409 SP_loop1:
4410         ldr     r0, [r1, #SP_SR]
4411         tst     r0, #SP_TDRE
4412         beq     SP_loop1
4413
4414         mov     r0, #SPI_8CLOCKS
4415         str     r0, [r1, #SP_TDR]
4416 SP_loop2:
4417         ldr     r0, [r1, #SP_SR]
4418         tst     r0, #SP_TDRE
4419         beq     SP_loop2
4420
4421         ldr     r0, [r1, #SP_RDR]
4422 SP_loop3:
4423         ldr     r0, [r1, #SP_SR]
4424         tst     r0, #SP_RDRF
4425         beq     SP_loop3
4426
4427         ldr     r0, [r1, #SP_RDR]
4428         and     r0, r0, #255
4429         bx      lr
4430 .endfunc
4431
4432 .func NVRAM_Xfer, NVRAM_XFER
4433         /* r0 = dest address */
4434         /* r1 = not used */
4435         /* r2 = src address within NVRAM */
4436         /* r3 = length */
4437 NVRAM_XFER:
4438         stmdb   sp!, {r4, r5, lr}
4439         mov     r5, r0          /* save r0 (dest address) */
4440         mov     r4, r3          /* save r3 (length) */
4441         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4442         and     r0, r0, #8
4443         add     r0, r0, #NVRAM_CMD_READ
4444         ldr     r1, =NVRAM_SCRATCH
4445         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4446         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4447 _local1:
4448         bl      NVRAM_INIT
4449         tst     r0, #NVRAM_SR_RDY
4450         bne     _local1
4451         mov     r0, #20
4452         bl      DELAY9
4453         mov     r2, r4          /* length */
4454         mov     r1, r5          /* dest address */
4455         mov     r0, #2          /* bytes to transfer in command */
4456         bl      NVRAM_XFER2
4457         ldmia   sp!, {r4, r5, lr}
4458         bx      lr
4459 .endfunc
4460
4461 .func NVRAM_Xfer2, NVRAM_XFER2
4462 NVRAM_XFER2:
4463         stmdb   sp!, {r4, r5, r6, lr}
4464         ldr     r4, =SP_BASE
4465         mov     r3, #0
4466         cmp     r0, #0
4467         bls     _local2
4468         ldr     r5, =NVRAM_SCRATCH
4469 _local4:
4470         ldrb    r6, [r5, r3]
4471         str     r6, [r4, #SP_TDR]
4472 _local3:
4473         ldr     r6, [r4, #SP_SR]
4474         tst     r6, #SP_TDRE
4475         beq     _local3
4476         add     r3, r3, #1
4477         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4478         blo     _local4
4479 _local2:
4480         mov     r3, #SPI_8CLOCKS
4481         str     r3, [r4, #SP_TDR]
4482         ldr     r0, [r4, #SP_RDR]
4483 _local5:
4484         ldr     r0, [r4, #SP_SR]
4485         tst     r0, #SP_RDRF
4486         beq     _local5
4487         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 */
4488         mov     r0, #0
4489         cmp     r2, #0  /* r2 is # of bytes to copy in */
4490         bls     _local6
4491 _local7:
4492         ldr     r5, [r4, #SP_SR]
4493         tst     r5, #SP_TDRE
4494         beq     _local7
4495         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4496 _local8:
4497         ldr     r5, [r4, #SP_SR]
4498         tst     r5, #SP_RDRF
4499         beq     _local8
4500         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4501         strb    r5, [r1], #1 /* postindexed */
4502         add     r0, r0, #1
4503         cmp     r0, r2
4504         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4505 _local6:
4506         mov     r0, #200
4507         bl      DELAY9
4508         ldmia   sp!, {r4, r5, r6, lr}
4509         bx      lr
4510 #endif