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