drivers/net/wireless/atmel.c

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