drivers/net/wireless/atmel.c

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