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 <net/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_4addr *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_4addr *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_4addr 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_ctl = 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_ctl = 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_4addr *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_4addr *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_ctl) & IEEE80211_FCTL_FROMDS)
 918                 memcpy(&skbp[6], header->addr3, 6);
 919         else
 920                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 921
 922         priv->dev->last_rx = jiffies;
 923         skb->protocol = eth_type_trans(skb, priv->dev);
 924         skb->ip_summed = CHECKSUM_NONE;
 925         netif_rx(skb);
 926         priv->dev->stats.rx_bytes += 12 + msdu_size;
 927         priv->dev->stats.rx_packets++;
 928 }
 929
 930 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 931    It doesn't matter that this is slow: it is only used to proble the first few
 932    packets. */
 933 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 934 {
 935         int i = msdu_size - 4;
 936         u32 netcrc, crc = 0xffffffff;
 937
 938         if (msdu_size < 4)
 939                 return 0;
 940
 941         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 942
 943         atmel_writeAR(priv->dev, packet_loc);
 944         while (i--) {
 945                 u8 octet = atmel_read8(priv->dev, DR);
 946                 crc = crc32_le(crc, &octet, 1);
 947         }
 948
 949         return (crc ^ 0xffffffff) == netcrc;
 950 }
 951
 952 static void frag_rx_path(struct atmel_private *priv,
 953                          struct ieee80211_hdr_4addr *header,
 954                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 955                          u8 frag_no, int more_frags)
 956 {
 957         u8 mac4[6];
 958         u8 source[6];
 959         struct sk_buff *skb;
 960
 961         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 962                 memcpy(source, header->addr3, 6);
 963         else
 964                 memcpy(source, header->addr2, 6);
 965
 966         rx_packet_loc += 24; /* skip header */
 967
 968         if (priv->do_rx_crc)
 969                 msdu_size -= 4;
 970
 971         if (frag_no == 0) { /* first fragment */
 972                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 973                 msdu_size -= 6;
 974                 rx_packet_loc += 6;
 975
 976                 if (priv->do_rx_crc)
 977                         crc = crc32_le(crc, mac4, 6);
 978
 979                 priv->frag_seq = seq_no;
 980                 priv->frag_no = 1;
 981                 priv->frag_len = msdu_size;
 982                 memcpy(priv->frag_source, source, 6);
 983                 memcpy(&priv->rx_buf[6], source, 6);
 984                 memcpy(priv->rx_buf, header->addr1, 6);
 985
 986                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 987
 988                 if (priv->do_rx_crc) {
 989                         u32 netcrc;
 990                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 991                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 992                         if ((crc ^ 0xffffffff) != netcrc) {
 993                                 priv->dev->stats.rx_crc_errors++;
 994                                 memset(priv->frag_source, 0xff, 6);
 995                         }
 996                 }
 997
 998         } else if (priv->frag_no == frag_no &&
 999                    priv->frag_seq == seq_no &&
1000                    memcmp(priv->frag_source, source, 6) == 0) {
1001
1002                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1003                                    rx_packet_loc, msdu_size);
1004                 if (priv->do_rx_crc) {
1005                         u32 netcrc;
1006                         crc = crc32_le(crc,
1007                                        &priv->rx_buf[12 + priv->frag_len],
1008                                        msdu_size);
1009                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1010                         if ((crc ^ 0xffffffff) != netcrc) {
1011                                 priv->dev->stats.rx_crc_errors++;
1012                                 memset(priv->frag_source, 0xff, 6);
1013                                 more_frags = 1; /* don't send broken assembly */
1014                         }
1015                 }
1016
1017                 priv->frag_len += msdu_size;
1018                 priv->frag_no++;
1019
1020                 if (!more_frags) { /* last one */
1021                         memset(priv->frag_source, 0xff, 6);
1022                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1023                                 priv->dev->stats.rx_dropped++;
1024                         } else {
1025                                 skb_reserve(skb, 2);
1026                                 memcpy(skb_put(skb, priv->frag_len + 12),
1027                                        priv->rx_buf,
1028                                        priv->frag_len + 12);
1029                                 priv->dev->last_rx = jiffies;
1030                                 skb->protocol = eth_type_trans(skb, priv->dev);
1031                                 skb->ip_summed = CHECKSUM_NONE;
1032                                 netif_rx(skb);
1033                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1034                                 priv->dev->stats.rx_packets++;
1035                         }
1036                 }
1037         } else
1038                 priv->wstats.discard.fragment++;
1039 }
1040
1041 static void rx_done_irq(struct atmel_private *priv)
1042 {
1043         int i;
1044         struct ieee80211_hdr_4addr header;
1045
1046         for (i = 0;
1047              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1048                      i < priv->host_info.rx_desc_count;
1049              i++) {
1050
1051                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1052                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1053                 u32 crc = 0xffffffff;
1054
1055                 if (status != RX_STATUS_SUCCESS) {
1056                         if (status == 0xc1) /* determined by experiment */
1057                                 priv->wstats.discard.nwid++;
1058                         else
1059                                 priv->dev->stats.rx_errors++;
1060                         goto next;
1061                 }
1062
1063                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1064                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1065
1066                 if (msdu_size < 30) {
1067                         priv->dev->stats.rx_errors++;
1068                         goto next;
1069                 }
1070
1071                 /* Get header as far as end of seq_ctl */
1072                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1073                 frame_ctl = le16_to_cpu(header.frame_ctl);
1074                 seq_control = le16_to_cpu(header.seq_ctl);
1075
1076                 /* probe for CRC use here if needed  once five packets have
1077                    arrived with the same crc status, we assume we know what's
1078                    happening and stop probing */
1079                 if (priv->probe_crc) {
1080                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1081                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1082                         } else {
1083                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1084                         }
1085                         if (priv->do_rx_crc) {
1086                                 if (priv->crc_ok_cnt++ > 5)
1087                                         priv->probe_crc = 0;
1088                         } else {
1089                                 if (priv->crc_ko_cnt++ > 5)
1090                                         priv->probe_crc = 0;
1091                         }
1092                 }
1093
1094                 /* don't CRC header when WEP in use */
1095                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1096                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1097                 }
1098                 msdu_size -= 24; /* header */
1099
1100                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1101                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1102                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1103                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1104
1105                         if (!more_fragments && packet_fragment_no == 0) {
1106                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1107                         } else {
1108                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1109                                              packet_sequence_no, packet_fragment_no, more_fragments);
1110                         }
1111                 }
1112
1113                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1114                         /* copy rest of packet into buffer */
1115                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1116
1117                         /* we use the same buffer for frag reassembly and control packets */
1118                         memset(priv->frag_source, 0xff, 6);
1119
1120                         if (priv->do_rx_crc) {
1121                                 /* last 4 octets is crc */
1122                                 msdu_size -= 4;
1123                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1124                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1125                                         priv->dev->stats.rx_crc_errors++;
1126                                         goto next;
1127                                 }
1128                         }
1129
1130                         atmel_management_frame(priv, &header, msdu_size,
1131                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1132                 }
1133
1134 next:
1135                 /* release descriptor */
1136                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1137
1138                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1139                         priv->rx_desc_head++;
1140                 else
1141                         priv->rx_desc_head = 0;
1142         }
1143 }
1144
1145 static irqreturn_t service_interrupt(int irq, void *dev_id)
1146 {
1147         struct net_device *dev = (struct net_device *) dev_id;
1148         struct atmel_private *priv = netdev_priv(dev);
1149         u8 isr;
1150         int i = -1;
1151         static u8 irq_order[] = {
1152                 ISR_OUT_OF_RANGE,
1153                 ISR_RxCOMPLETE,
1154                 ISR_TxCOMPLETE,
1155                 ISR_RxFRAMELOST,
1156                 ISR_FATAL_ERROR,
1157                 ISR_COMMAND_COMPLETE,
1158                 ISR_IBSS_MERGE,
1159                 ISR_GENERIC_IRQ
1160         };
1161
1162         if (priv->card && priv->present_callback &&
1163             !(*priv->present_callback)(priv->card))
1164                 return IRQ_HANDLED;
1165
1166         /* In this state upper-level code assumes it can mess with
1167            the card unhampered by interrupts which may change register state.
1168            Note that even though the card shouldn't generate interrupts
1169            the inturrupt line may be shared. This allows card setup
1170            to go on without disabling interrupts for a long time. */
1171         if (priv->station_state == STATION_STATE_DOWN)
1172                 return IRQ_NONE;
1173
1174         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1175
1176         while (1) {
1177                 if (!atmel_lock_mac(priv)) {
1178                         /* failed to contact card */
1179                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1180                         return IRQ_HANDLED;
1181                 }
1182
1183                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1184                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1185
1186                 if (!isr) {
1187                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1188                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1189                 }
1190
1191                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1192
1193                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1194                         if (isr & irq_order[i])
1195                                 break;
1196
1197                 if (!atmel_lock_mac(priv)) {
1198                         /* failed to contact card */
1199                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1200                         return IRQ_HANDLED;
1201                 }
1202
1203                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1204                 isr ^= irq_order[i];
1205                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1206                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1207
1208                 switch (irq_order[i]) {
1209
1210                 case ISR_OUT_OF_RANGE:
1211                         if (priv->operating_mode == IW_MODE_INFRA &&
1212                             priv->station_state == STATION_STATE_READY) {
1213                                 priv->station_is_associated = 0;
1214                                 atmel_scan(priv, 1);
1215                         }
1216                         break;
1217
1218                 case ISR_RxFRAMELOST:
1219                         priv->wstats.discard.misc++;
1220                         /* fall through */
1221                 case ISR_RxCOMPLETE:
1222                         rx_done_irq(priv);
1223                         break;
1224
1225                 case ISR_TxCOMPLETE:
1226                         tx_done_irq(priv);
1227                         break;
1228
1229                 case ISR_FATAL_ERROR:
1230                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1231                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1232                         break;
1233
1234                 case ISR_COMMAND_COMPLETE:
1235                         atmel_command_irq(priv);
1236                         break;
1237
1238                 case ISR_IBSS_MERGE:
1239                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1240                                       priv->CurrentBSSID, 6);
1241                         /* The WPA stuff cares about the current AP address */
1242                         if (priv->use_wpa)
1243                                 build_wpa_mib(priv);
1244                         break;
1245                 case ISR_GENERIC_IRQ:
1246                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1247                         break;
1248                 }
1249         }
1250 }
1251
1252 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1253 {
1254         struct atmel_private *priv = netdev_priv(dev);
1255
1256         /* update the link quality here in case we are seeing no beacons
1257            at all to drive the process */
1258         atmel_smooth_qual(priv);
1259
1260         priv->wstats.status = priv->station_state;
1261
1262         if (priv->operating_mode == IW_MODE_INFRA) {
1263                 if (priv->station_state != STATION_STATE_READY) {
1264                         priv->wstats.qual.qual = 0;
1265                         priv->wstats.qual.level = 0;
1266                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1267                                         | IW_QUAL_LEVEL_INVALID);
1268                 }
1269                 priv->wstats.qual.noise = 0;
1270                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1271         } else {
1272                 /* Quality levels cannot be determined in ad-hoc mode,
1273                    because we can 'hear' more that one remote station. */
1274                 priv->wstats.qual.qual = 0;
1275                 priv->wstats.qual.level = 0;
1276                 priv->wstats.qual.noise = 0;
1277                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1278                                         | IW_QUAL_LEVEL_INVALID
1279                                         | IW_QUAL_NOISE_INVALID;
1280                 priv->wstats.miss.beacon = 0;
1281         }
1282
1283         return &priv->wstats;
1284 }
1285
1286 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1287 {
1288         if ((new_mtu < 68) || (new_mtu > 2312))
1289                 return -EINVAL;
1290         dev->mtu = new_mtu;
1291         return 0;
1292 }
1293
1294 static int atmel_set_mac_address(struct net_device *dev, void *p)
1295 {
1296         struct sockaddr *addr = p;
1297
1298         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1299         return atmel_open(dev);
1300 }
1301
1302 EXPORT_SYMBOL(atmel_open);
1303
1304 int atmel_open(struct net_device *dev)
1305 {
1306         struct atmel_private *priv = netdev_priv(dev);
1307         int i, channel, err;
1308
1309         /* any scheduled timer is no longer needed and might screw things up.. */
1310         del_timer_sync(&priv->management_timer);
1311
1312         /* Interrupts will not touch the card once in this state... */
1313         priv->station_state = STATION_STATE_DOWN;
1314
1315         if (priv->new_SSID_size) {
1316                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1317                 priv->SSID_size = priv->new_SSID_size;
1318                 priv->new_SSID_size = 0;
1319         }
1320         priv->BSS_list_entries = 0;
1321
1322         priv->AuthenticationRequestRetryCnt = 0;
1323         priv->AssociationRequestRetryCnt = 0;
1324         priv->ReAssociationRequestRetryCnt = 0;
1325         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1326         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1327
1328         priv->site_survey_state = SITE_SURVEY_IDLE;
1329         priv->station_is_associated = 0;
1330
1331         err = reset_atmel_card(dev);
1332         if (err)
1333                 return err;
1334
1335         if (priv->config_reg_domain) {
1336                 priv->reg_domain = priv->config_reg_domain;
1337                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1338         } else {
1339                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1340                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1341                         if (priv->reg_domain == channel_table[i].reg_domain)
1342                                 break;
1343                 if (i == ARRAY_SIZE(channel_table)) {
1344                         priv->reg_domain = REG_DOMAIN_MKK1;
1345                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1346                 }
1347         }
1348
1349         if ((channel = atmel_validate_channel(priv, priv->channel)))
1350                 priv->channel = channel;
1351
1352         /* this moves station_state on.... */
1353         atmel_scan(priv, 1);
1354
1355         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1356         return 0;
1357 }
1358
1359 static int atmel_close(struct net_device *dev)
1360 {
1361         struct atmel_private *priv = netdev_priv(dev);
1362
1363         /* Send event to userspace that we are disassociating */
1364         if (priv->station_state == STATION_STATE_READY) {
1365                 union iwreq_data wrqu;
1366
1367                 wrqu.data.length = 0;
1368                 wrqu.data.flags = 0;
1369                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1370                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1371                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1372         }
1373
1374         atmel_enter_state(priv, STATION_STATE_DOWN);
1375
1376         if (priv->bus_type == BUS_TYPE_PCCARD)
1377                 atmel_write16(dev, GCR, 0x0060);
1378         atmel_write16(dev, GCR, 0x0040);
1379         return 0;
1380 }
1381
1382 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1383 {
1384         /* check that channel is OK, if so return zero,
1385            else return suitable default channel */
1386         int i;
1387
1388         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1389                 if (priv->reg_domain == channel_table[i].reg_domain) {
1390                         if (channel >= channel_table[i].min &&
1391                             channel <= channel_table[i].max)
1392                                 return 0;
1393                         else
1394                                 return channel_table[i].min;
1395                 }
1396         return 0;
1397 }
1398
1399 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1400 {
1401         int i;
1402         char *p = buf;
1403         char *s, *r, *c;
1404
1405         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1406                      DRIVER_MAJOR, DRIVER_MINOR);
1407
1408         if (priv->station_state != STATION_STATE_DOWN) {
1409                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1410                                 "Firmware location:\t",
1411                              priv->host_info.major_version,
1412                              priv->host_info.minor_version,
1413                              priv->host_info.build_version);
1414
1415                 if (priv->card_type != CARD_TYPE_EEPROM)
1416                         p += sprintf(p, "on card\n");
1417                 else if (priv->firmware)
1418                         p += sprintf(p, "%s loaded by host\n",
1419                                      priv->firmware_id);
1420                 else
1421                         p += sprintf(p, "%s loaded by hotplug\n",
1422                                      priv->firmware_id);
1423
1424                 switch (priv->card_type) {
1425                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1426                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1427                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1428                 default: c = "<unknown>";
1429                 }
1430
1431                 r = "<unknown>";
1432                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1433                         if (priv->reg_domain == channel_table[i].reg_domain)
1434                                 r = channel_table[i].name;
1435
1436                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1437                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1438                 p += sprintf(p, "Host CRC checking:\t%s\n",
1439                              priv->do_rx_crc ? "On" : "Off");
1440                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1441                              priv->use_wpa ? "Yes" : "No");
1442         }
1443
1444         switch(priv->station_state) {
1445         case STATION_STATE_SCANNING: s = "Scanning"; break;
1446         case STATION_STATE_JOINNING: s = "Joining"; break;
1447         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1448         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1449         case STATION_STATE_READY: s = "Ready"; break;
1450         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1451         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1452         case STATION_STATE_DOWN: s = "Down"; break;
1453         default: s = "<unknown>";
1454         }
1455
1456         p += sprintf(p, "Current state:\t\t%s\n", s);
1457         return p - buf;
1458 }
1459
1460 static int atmel_read_proc(char *page, char **start, off_t off,
1461                            int count, int *eof, void *data)
1462 {
1463         struct atmel_private *priv = data;
1464         int len = atmel_proc_output (page, priv);
1465         if (len <= off+count) *eof = 1;
1466         *start = page + off;
1467         len -= off;
1468         if (len>count) len = count;
1469         if (len<0) len = 0;
1470         return len;
1471 }
1472
1473 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1474                                    const AtmelFWType fw_type,
1475                                    struct device *sys_dev,
1476                                    int (*card_present)(void *), void *card)
1477 {
1478         struct proc_dir_entry *ent;
1479         struct net_device *dev;
1480         struct atmel_private *priv;
1481         int rc;
1482
1483         /* Create the network device object. */
1484         dev = alloc_etherdev(sizeof(*priv));
1485         if (!dev) {
1486                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1487                 return NULL;
1488         }
1489         if (dev_alloc_name(dev, dev->name) < 0) {
1490                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1491                 goto err_out_free;
1492         }
1493
1494         priv = netdev_priv(dev);
1495         priv->dev = dev;
1496         priv->sys_dev = sys_dev;
1497         priv->present_callback = card_present;
1498         priv->card = card;
1499         priv->firmware = NULL;
1500         priv->firmware_id[0] = '\0';
1501         priv->firmware_type = fw_type;
1502         if (firmware) /* module parameter */
1503                 strcpy(priv->firmware_id, firmware);
1504         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1505         priv->station_state = STATION_STATE_DOWN;
1506         priv->do_rx_crc = 0;
1507         /* For PCMCIA cards, some chips need CRC, some don't
1508            so we have to probe. */
1509         if (priv->bus_type == BUS_TYPE_PCCARD) {
1510                 priv->probe_crc = 1;
1511                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1512         } else
1513                 priv->probe_crc = 0;
1514         priv->last_qual = jiffies;
1515         priv->last_beacon_timestamp = 0;
1516         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1517         memset(priv->BSSID, 0, 6);
1518         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1519         priv->station_was_associated = 0;
1520
1521         priv->last_survey = jiffies;
1522         priv->preamble = LONG_PREAMBLE;
1523         priv->operating_mode = IW_MODE_INFRA;
1524         priv->connect_to_any_BSS = 0;
1525         priv->config_reg_domain = 0;
1526         priv->reg_domain = 0;
1527         priv->tx_rate = 3;
1528         priv->auto_tx_rate = 1;
1529         priv->channel = 4;
1530         priv->power_mode = 0;
1531         priv->SSID[0] = '\0';
1532         priv->SSID_size = 0;
1533         priv->new_SSID_size = 0;
1534         priv->frag_threshold = 2346;
1535         priv->rts_threshold = 2347;
1536         priv->short_retry = 7;
1537         priv->long_retry = 4;
1538
1539         priv->wep_is_on = 0;
1540         priv->default_key = 0;
1541         priv->encryption_level = 0;
1542         priv->exclude_unencrypted = 0;
1543         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1544         priv->use_wpa = 0;
1545         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1546         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1547
1548         priv->default_beacon_period = priv->beacon_period = 100;
1549         priv->listen_interval = 1;
1550
1551         init_timer(&priv->management_timer);
1552         spin_lock_init(&priv->irqlock);
1553         spin_lock_init(&priv->timerlock);
1554         priv->management_timer.function = atmel_management_timer;
1555         priv->management_timer.data = (unsigned long) dev;
1556
1557         dev->open = atmel_open;
1558         dev->stop = atmel_close;
1559         dev->change_mtu = atmel_change_mtu;
1560         dev->set_mac_address = atmel_set_mac_address;
1561         dev->hard_start_xmit = start_tx;
1562         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1563         dev->do_ioctl = atmel_ioctl;
1564         dev->irq = irq;
1565         dev->base_addr = port;
1566
1567         SET_NETDEV_DEV(dev, sys_dev);
1568
1569         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1570                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1571                 goto err_out_free;
1572         }
1573
1574         if (!request_region(dev->base_addr, 32,
1575                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1576                 goto err_out_irq;
1577         }
1578
1579         if (register_netdev(dev))
1580                 goto err_out_res;
1581
1582         if (!probe_atmel_card(dev)){
1583                 unregister_netdev(dev);
1584                 goto err_out_res;
1585         }
1586
1587         netif_carrier_off(dev);
1588
1589         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1590         if (!ent)
1591                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1592
1593         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1594                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1595
1596         return dev;
1597
1598 err_out_res:
1599         release_region( dev->base_addr, 32);
1600 err_out_irq:
1601         free_irq(dev->irq, dev);
1602 err_out_free:
1603         free_netdev(dev);
1604         return NULL;
1605 }
1606
1607 EXPORT_SYMBOL(init_atmel_card);
1608
1609 void stop_atmel_card(struct net_device *dev)
1610 {
1611         struct atmel_private *priv = netdev_priv(dev);
1612
1613         /* put a brick on it... */
1614         if (priv->bus_type == BUS_TYPE_PCCARD)
1615                 atmel_write16(dev, GCR, 0x0060);
1616         atmel_write16(dev, GCR, 0x0040);
1617
1618         del_timer_sync(&priv->management_timer);
1619         unregister_netdev(dev);
1620         remove_proc_entry("driver/atmel", NULL);
1621         free_irq(dev->irq, dev);
1622         kfree(priv->firmware);
1623         release_region(dev->base_addr, 32);
1624         free_netdev(dev);
1625 }
1626
1627 EXPORT_SYMBOL(stop_atmel_card);
1628
1629 static int atmel_set_essid(struct net_device *dev,
1630                            struct iw_request_info *info,
1631                            struct iw_point *dwrq,
1632                            char *extra)
1633 {
1634         struct atmel_private *priv = netdev_priv(dev);
1635
1636         /* Check if we asked for `any' */
1637         if(dwrq->flags == 0) {
1638                 priv->connect_to_any_BSS = 1;
1639         } else {
1640                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1641
1642                 priv->connect_to_any_BSS = 0;
1643
1644                 /* Check the size of the string */
1645                 if (dwrq->length > MAX_SSID_LENGTH)
1646                          return -E2BIG;
1647                 if (index != 0)
1648                         return -EINVAL;
1649
1650                 memcpy(priv->new_SSID, extra, dwrq->length);
1651                 priv->new_SSID_size = dwrq->length;
1652         }
1653
1654         return -EINPROGRESS;
1655 }
1656
1657 static int atmel_get_essid(struct net_device *dev,
1658                            struct iw_request_info *info,
1659                            struct iw_point *dwrq,
1660                            char *extra)
1661 {
1662         struct atmel_private *priv = netdev_priv(dev);
1663
1664         /* Get the current SSID */
1665         if (priv->new_SSID_size != 0) {
1666                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1667                 dwrq->length = priv->new_SSID_size;
1668         } else {
1669                 memcpy(extra, priv->SSID, priv->SSID_size);
1670                 dwrq->length = priv->SSID_size;
1671         }
1672
1673         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1674
1675         return 0;
1676 }
1677
1678 static int atmel_get_wap(struct net_device *dev,
1679                          struct iw_request_info *info,
1680                          struct sockaddr *awrq,
1681                          char *extra)
1682 {
1683         struct atmel_private *priv = netdev_priv(dev);
1684         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1685         awrq->sa_family = ARPHRD_ETHER;
1686
1687         return 0;
1688 }
1689
1690 static int atmel_set_encode(struct net_device *dev,
1691                             struct iw_request_info *info,
1692                             struct iw_point *dwrq,
1693                             char *extra)
1694 {
1695         struct atmel_private *priv = netdev_priv(dev);
1696
1697         /* Basic checking: do we have a key to set ?
1698          * Note : with the new API, it's impossible to get a NULL pointer.
1699          * Therefore, we need to check a key size == 0 instead.
1700          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1701          * when no key is present (only change flags), but older versions
1702          * don't do it. - Jean II */
1703         if (dwrq->length > 0) {
1704                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1705                 int current_index = priv->default_key;
1706                 /* Check the size of the key */
1707                 if (dwrq->length > 13) {
1708                         return -EINVAL;
1709                 }
1710                 /* Check the index (none -> use current) */
1711                 if (index < 0 || index >= 4)
1712                         index = current_index;
1713                 else
1714                         priv->default_key = index;
1715                 /* Set the length */
1716                 if (dwrq->length > 5)
1717                         priv->wep_key_len[index] = 13;
1718                 else
1719                         if (dwrq->length > 0)
1720                                 priv->wep_key_len[index] = 5;
1721                         else
1722                                 /* Disable the key */
1723                                 priv->wep_key_len[index] = 0;
1724                 /* Check if the key is not marked as invalid */
1725                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1726                         /* Cleanup */
1727                         memset(priv->wep_keys[index], 0, 13);
1728                         /* Copy the key in the driver */
1729                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1730                 }
1731                 /* WE specify that if a valid key is set, encryption
1732                  * should be enabled (user may turn it off later)
1733                  * This is also how "iwconfig ethX key on" works */
1734                 if (index == current_index &&
1735                     priv->wep_key_len[index] > 0) {
1736                         priv->wep_is_on = 1;
1737                         priv->exclude_unencrypted = 1;
1738                         if (priv->wep_key_len[index] > 5) {
1739                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1740                                 priv->encryption_level = 2;
1741                         } else {
1742                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1743                                 priv->encryption_level = 1;
1744                         }
1745                 }
1746         } else {
1747                 /* Do we want to just set the transmit key index ? */
1748                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1749                 if (index >= 0 && index < 4) {
1750                         priv->default_key = index;
1751                 } else
1752                         /* Don't complain if only change the mode */
1753                         if (!(dwrq->flags & IW_ENCODE_MODE))
1754                                 return -EINVAL;
1755         }
1756         /* Read the flags */
1757         if (dwrq->flags & IW_ENCODE_DISABLED) {
1758                 priv->wep_is_on = 0;
1759                 priv->encryption_level = 0;
1760                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1761         } else {
1762                 priv->wep_is_on = 1;
1763                 if (priv->wep_key_len[priv->default_key] > 5) {
1764                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1765                         priv->encryption_level = 2;
1766                 } else {
1767                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1768                         priv->encryption_level = 1;
1769                 }
1770         }
1771         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1772                 priv->exclude_unencrypted = 1;
1773         if(dwrq->flags & IW_ENCODE_OPEN)
1774                 priv->exclude_unencrypted = 0;
1775
1776         return -EINPROGRESS;            /* Call commit handler */
1777 }
1778
1779 static int atmel_get_encode(struct net_device *dev,
1780                             struct iw_request_info *info,
1781                             struct iw_point *dwrq,
1782                             char *extra)
1783 {
1784         struct atmel_private *priv = netdev_priv(dev);
1785         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1786
1787         if (!priv->wep_is_on)
1788                 dwrq->flags = IW_ENCODE_DISABLED;
1789         else {
1790                 if (priv->exclude_unencrypted)
1791                         dwrq->flags = IW_ENCODE_RESTRICTED;
1792                 else
1793                         dwrq->flags = IW_ENCODE_OPEN;
1794         }
1795                 /* Which key do we want ? -1 -> tx index */
1796         if (index < 0 || index >= 4)
1797                 index = priv->default_key;
1798         dwrq->flags |= index + 1;
1799         /* Copy the key to the user buffer */
1800         dwrq->length = priv->wep_key_len[index];
1801         if (dwrq->length > 16) {
1802                 dwrq->length=0;
1803         } else {
1804                 memset(extra, 0, 16);
1805                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1806         }
1807
1808         return 0;
1809 }
1810
1811 static int atmel_set_encodeext(struct net_device *dev,
1812                             struct iw_request_info *info,
1813                             union iwreq_data *wrqu,
1814                             char *extra)
1815 {
1816         struct atmel_private *priv = netdev_priv(dev);
1817         struct iw_point *encoding = &wrqu->encoding;
1818         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1819         int idx, key_len, alg = ext->alg, set_key = 1;
1820
1821         /* Determine and validate the key index */
1822         idx = encoding->flags & IW_ENCODE_INDEX;
1823         if (idx) {
1824                 if (idx < 1 || idx > WEP_KEYS)
1825                         return -EINVAL;
1826                 idx--;
1827         } else
1828                 idx = priv->default_key;
1829
1830         if (encoding->flags & IW_ENCODE_DISABLED)
1831             alg = IW_ENCODE_ALG_NONE;
1832
1833         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1834                 priv->default_key = idx;
1835                 set_key = ext->key_len > 0 ? 1 : 0;
1836         }
1837
1838         if (set_key) {
1839                 /* Set the requested key first */
1840                 switch (alg) {
1841                 case IW_ENCODE_ALG_NONE:
1842                         priv->wep_is_on = 0;
1843                         priv->encryption_level = 0;
1844                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1845                         break;
1846                 case IW_ENCODE_ALG_WEP:
1847                         if (ext->key_len > 5) {
1848                                 priv->wep_key_len[idx] = 13;
1849                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1850                                 priv->encryption_level = 2;
1851                         } else if (ext->key_len > 0) {
1852                                 priv->wep_key_len[idx] = 5;
1853                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1854                                 priv->encryption_level = 1;
1855                         } else {
1856                                 return -EINVAL;
1857                         }
1858                         priv->wep_is_on = 1;
1859                         memset(priv->wep_keys[idx], 0, 13);
1860                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1861                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1862                         break;
1863                 default:
1864                         return -EINVAL;
1865                 }
1866         }
1867
1868         return -EINPROGRESS;
1869 }
1870
1871 static int atmel_get_encodeext(struct net_device *dev,
1872                             struct iw_request_info *info,
1873                             union iwreq_data *wrqu,
1874                             char *extra)
1875 {
1876         struct atmel_private *priv = netdev_priv(dev);
1877         struct iw_point *encoding = &wrqu->encoding;
1878         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1879         int idx, max_key_len;
1880
1881         max_key_len = encoding->length - sizeof(*ext);
1882         if (max_key_len < 0)
1883                 return -EINVAL;
1884
1885         idx = encoding->flags & IW_ENCODE_INDEX;
1886         if (idx) {
1887                 if (idx < 1 || idx > WEP_KEYS)
1888                         return -EINVAL;
1889                 idx--;
1890         } else
1891                 idx = priv->default_key;
1892
1893         encoding->flags = idx + 1;
1894         memset(ext, 0, sizeof(*ext));
1895
1896         if (!priv->wep_is_on) {
1897                 ext->alg = IW_ENCODE_ALG_NONE;
1898                 ext->key_len = 0;
1899                 encoding->flags |= IW_ENCODE_DISABLED;
1900         } else {
1901                 if (priv->encryption_level > 0)
1902                         ext->alg = IW_ENCODE_ALG_WEP;
1903                 else
1904                         return -EINVAL;
1905
1906                 ext->key_len = priv->wep_key_len[idx];
1907                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1908                 encoding->flags |= IW_ENCODE_ENABLED;
1909         }
1910
1911         return 0;
1912 }
1913
1914 static int atmel_set_auth(struct net_device *dev,
1915                                struct iw_request_info *info,
1916                                union iwreq_data *wrqu, char *extra)
1917 {
1918         struct atmel_private *priv = netdev_priv(dev);
1919         struct iw_param *param = &wrqu->param;
1920
1921         switch (param->flags & IW_AUTH_INDEX) {
1922         case IW_AUTH_WPA_VERSION:
1923         case IW_AUTH_CIPHER_PAIRWISE:
1924         case IW_AUTH_CIPHER_GROUP:
1925         case IW_AUTH_KEY_MGMT:
1926         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1927         case IW_AUTH_PRIVACY_INVOKED:
1928                 /*
1929                  * atmel does not use these parameters
1930                  */
1931                 break;
1932
1933         case IW_AUTH_DROP_UNENCRYPTED:
1934                 priv->exclude_unencrypted = param->value ? 1 : 0;
1935                 break;
1936
1937         case IW_AUTH_80211_AUTH_ALG: {
1938                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1939                                 priv->exclude_unencrypted = 1;
1940                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1941                                 priv->exclude_unencrypted = 0;
1942                         } else
1943                                 return -EINVAL;
1944                         break;
1945                 }
1946
1947         case IW_AUTH_WPA_ENABLED:
1948                 /* Silently accept disable of WPA */
1949                 if (param->value > 0)
1950                         return -EOPNOTSUPP;
1951                 break;
1952
1953         default:
1954                 return -EOPNOTSUPP;
1955         }
1956         return -EINPROGRESS;
1957 }
1958
1959 static int atmel_get_auth(struct net_device *dev,
1960                                struct iw_request_info *info,
1961                                union iwreq_data *wrqu, char *extra)
1962 {
1963         struct atmel_private *priv = netdev_priv(dev);
1964         struct iw_param *param = &wrqu->param;
1965
1966         switch (param->flags & IW_AUTH_INDEX) {
1967         case IW_AUTH_DROP_UNENCRYPTED:
1968                 param->value = priv->exclude_unencrypted;
1969                 break;
1970
1971         case IW_AUTH_80211_AUTH_ALG:
1972                 if (priv->exclude_unencrypted == 1)
1973                         param->value = IW_AUTH_ALG_SHARED_KEY;
1974                 else
1975                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1976                 break;
1977
1978         case IW_AUTH_WPA_ENABLED:
1979                 param->value = 0;
1980                 break;
1981
1982         default:
1983                 return -EOPNOTSUPP;
1984         }
1985         return 0;
1986 }
1987
1988
1989 static int atmel_get_name(struct net_device *dev,
1990                           struct iw_request_info *info,
1991                           char *cwrq,
1992                           char *extra)
1993 {
1994         strcpy(cwrq, "IEEE 802.11-DS");
1995         return 0;
1996 }
1997
1998 static int atmel_set_rate(struct net_device *dev,
1999                           struct iw_request_info *info,
2000                           struct iw_param *vwrq,
2001                           char *extra)
2002 {
2003         struct atmel_private *priv = netdev_priv(dev);
2004
2005         if (vwrq->fixed == 0) {
2006                 priv->tx_rate = 3;
2007                 priv->auto_tx_rate = 1;
2008         } else {
2009                 priv->auto_tx_rate = 0;
2010
2011                 /* Which type of value ? */
2012                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2013                         /* Setting by rate index */
2014                         priv->tx_rate = vwrq->value;
2015                 } else {
2016                 /* Setting by frequency value */
2017                         switch (vwrq->value) {
2018                         case  1000000: priv->tx_rate = 0; break;
2019                         case  2000000: priv->tx_rate = 1; break;
2020                         case  5500000: priv->tx_rate = 2; break;
2021                         case 11000000: priv->tx_rate = 3; break;
2022                         default: return -EINVAL;
2023                         }
2024                 }
2025         }
2026
2027         return -EINPROGRESS;
2028 }
2029
2030 static int atmel_set_mode(struct net_device *dev,
2031                           struct iw_request_info *info,
2032                           __u32 *uwrq,
2033                           char *extra)
2034 {
2035         struct atmel_private *priv = netdev_priv(dev);
2036
2037         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2038                 return -EINVAL;
2039
2040         priv->operating_mode = *uwrq;
2041         return -EINPROGRESS;
2042 }
2043
2044 static int atmel_get_mode(struct net_device *dev,
2045                           struct iw_request_info *info,
2046                           __u32 *uwrq,
2047                           char *extra)
2048 {
2049         struct atmel_private *priv = netdev_priv(dev);
2050
2051         *uwrq = priv->operating_mode;
2052         return 0;
2053 }
2054
2055 static int atmel_get_rate(struct net_device *dev,
2056                          struct iw_request_info *info,
2057                          struct iw_param *vwrq,
2058                          char *extra)
2059 {
2060         struct atmel_private *priv = netdev_priv(dev);
2061
2062         if (priv->auto_tx_rate) {
2063                 vwrq->fixed = 0;
2064                 vwrq->value = 11000000;
2065         } else {
2066                 vwrq->fixed = 1;
2067                 switch(priv->tx_rate) {
2068                 case 0: vwrq->value =  1000000; break;
2069                 case 1: vwrq->value =  2000000; break;
2070                 case 2: vwrq->value =  5500000; break;
2071                 case 3: vwrq->value = 11000000; break;
2072                 }
2073         }
2074         return 0;
2075 }
2076
2077 static int atmel_set_power(struct net_device *dev,
2078                            struct iw_request_info *info,
2079                            struct iw_param *vwrq,
2080                            char *extra)
2081 {
2082         struct atmel_private *priv = netdev_priv(dev);
2083         priv->power_mode = vwrq->disabled ? 0 : 1;
2084         return -EINPROGRESS;
2085 }
2086
2087 static int atmel_get_power(struct net_device *dev,
2088                            struct iw_request_info *info,
2089                            struct iw_param *vwrq,
2090                            char *extra)
2091 {
2092         struct atmel_private *priv = netdev_priv(dev);
2093         vwrq->disabled = priv->power_mode ? 0 : 1;
2094         vwrq->flags = IW_POWER_ON;
2095         return 0;
2096 }
2097
2098 static int atmel_set_retry(struct net_device *dev,
2099                            struct iw_request_info *info,
2100                            struct iw_param *vwrq,
2101                            char *extra)
2102 {
2103         struct atmel_private *priv = netdev_priv(dev);
2104
2105         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2106                 if (vwrq->flags & IW_RETRY_LONG)
2107                         priv->long_retry = vwrq->value;
2108                 else if (vwrq->flags & IW_RETRY_SHORT)
2109                         priv->short_retry = vwrq->value;
2110                 else {
2111                         /* No modifier : set both */
2112                         priv->long_retry = vwrq->value;
2113                         priv->short_retry = vwrq->value;
2114                 }
2115                 return -EINPROGRESS;
2116         }
2117
2118         return -EINVAL;
2119 }
2120
2121 static int atmel_get_retry(struct net_device *dev,
2122                            struct iw_request_info *info,
2123                            struct iw_param *vwrq,
2124                            char *extra)
2125 {
2126         struct atmel_private *priv = netdev_priv(dev);
2127
2128         vwrq->disabled = 0;      /* Can't be disabled */
2129
2130         /* Note : by default, display the short retry number */
2131         if (vwrq->flags & IW_RETRY_LONG) {
2132                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2133                 vwrq->value = priv->long_retry;
2134         } else {
2135                 vwrq->flags = IW_RETRY_LIMIT;
2136                 vwrq->value = priv->short_retry;
2137                 if (priv->long_retry != priv->short_retry)
2138                         vwrq->flags |= IW_RETRY_SHORT;
2139         }
2140
2141         return 0;
2142 }
2143
2144 static int atmel_set_rts(struct net_device *dev,
2145                          struct iw_request_info *info,
2146                          struct iw_param *vwrq,
2147                          char *extra)
2148 {
2149         struct atmel_private *priv = netdev_priv(dev);
2150         int rthr = vwrq->value;
2151
2152         if (vwrq->disabled)
2153                 rthr = 2347;
2154         if ((rthr < 0) || (rthr > 2347)) {
2155                 return -EINVAL;
2156         }
2157         priv->rts_threshold = rthr;
2158
2159         return -EINPROGRESS;            /* Call commit handler */
2160 }
2161
2162 static int atmel_get_rts(struct net_device *dev,
2163                          struct iw_request_info *info,
2164                          struct iw_param *vwrq,
2165                          char *extra)
2166 {
2167         struct atmel_private *priv = netdev_priv(dev);
2168
2169         vwrq->value = priv->rts_threshold;
2170         vwrq->disabled = (vwrq->value >= 2347);
2171         vwrq->fixed = 1;
2172
2173         return 0;
2174 }
2175
2176 static int atmel_set_frag(struct net_device *dev,
2177                           struct iw_request_info *info,
2178                           struct iw_param *vwrq,
2179                           char *extra)
2180 {
2181         struct atmel_private *priv = netdev_priv(dev);
2182         int fthr = vwrq->value;
2183
2184         if (vwrq->disabled)
2185                 fthr = 2346;
2186         if ((fthr < 256) || (fthr > 2346)) {
2187                 return -EINVAL;
2188         }
2189         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2190         priv->frag_threshold = fthr;
2191
2192         return -EINPROGRESS;            /* Call commit handler */
2193 }
2194
2195 static int atmel_get_frag(struct net_device *dev,
2196                           struct iw_request_info *info,
2197                           struct iw_param *vwrq,
2198                           char *extra)
2199 {
2200         struct atmel_private *priv = netdev_priv(dev);
2201
2202         vwrq->value = priv->frag_threshold;
2203         vwrq->disabled = (vwrq->value >= 2346);
2204         vwrq->fixed = 1;
2205
2206         return 0;
2207 }
2208
2209 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2210                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2211
2212 static int atmel_set_freq(struct net_device *dev,
2213                           struct iw_request_info *info,
2214                           struct iw_freq *fwrq,
2215                           char *extra)
2216 {
2217         struct atmel_private *priv = netdev_priv(dev);
2218         int rc = -EINPROGRESS;          /* Call commit handler */
2219
2220         /* If setting by frequency, convert to a channel */
2221         if ((fwrq->e == 1) &&
2222             (fwrq->m >= (int) 241200000) &&
2223             (fwrq->m <= (int) 248700000)) {
2224                 int f = fwrq->m / 100000;
2225                 int c = 0;
2226                 while ((c < 14) && (f != frequency_list[c]))
2227                         c++;
2228                 /* Hack to fall through... */
2229                 fwrq->e = 0;
2230                 fwrq->m = c + 1;
2231         }
2232         /* Setting by channel number */
2233         if ((fwrq->m > 1000) || (fwrq->e > 0))
2234                 rc = -EOPNOTSUPP;
2235         else {
2236                 int channel = fwrq->m;
2237                 if (atmel_validate_channel(priv, channel) == 0) {
2238                         priv->channel = channel;
2239                 } else {
2240                         rc = -EINVAL;
2241                 }
2242         }
2243         return rc;
2244 }
2245
2246 static int atmel_get_freq(struct net_device *dev,
2247                           struct iw_request_info *info,
2248                           struct iw_freq *fwrq,
2249                           char *extra)
2250 {
2251         struct atmel_private *priv = netdev_priv(dev);
2252
2253         fwrq->m = priv->channel;
2254         fwrq->e = 0;
2255         return 0;
2256 }
2257
2258 static int atmel_set_scan(struct net_device *dev,
2259                           struct iw_request_info *info,
2260                           struct iw_point *dwrq,
2261                           char *extra)
2262 {
2263         struct atmel_private *priv = netdev_priv(dev);
2264         unsigned long flags;
2265
2266         /* Note : you may have realised that, as this is a SET operation,
2267          * this is privileged and therefore a normal user can't
2268          * perform scanning.
2269          * This is not an error, while the device perform scanning,
2270          * traffic doesn't flow, so it's a perfect DoS...
2271          * Jean II */
2272
2273         if (priv->station_state == STATION_STATE_DOWN)
2274                 return -EAGAIN;
2275
2276         /* Timeout old surveys. */
2277         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2278                 priv->site_survey_state = SITE_SURVEY_IDLE;
2279         priv->last_survey = jiffies;
2280
2281         /* Initiate a scan command */
2282         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2283                 return -EBUSY;
2284
2285         del_timer_sync(&priv->management_timer);
2286         spin_lock_irqsave(&priv->irqlock, flags);
2287
2288         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2289         priv->fast_scan = 0;
2290         atmel_scan(priv, 0);
2291         spin_unlock_irqrestore(&priv->irqlock, flags);
2292
2293         return 0;
2294 }
2295
2296 static int atmel_get_scan(struct net_device *dev,
2297                           struct iw_request_info *info,
2298                           struct iw_point *dwrq,
2299                           char *extra)
2300 {
2301         struct atmel_private *priv = netdev_priv(dev);
2302         int i;
2303         char *current_ev = extra;
2304         struct iw_event iwe;
2305
2306         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2307                 return -EAGAIN;
2308
2309         for (i = 0; i < priv->BSS_list_entries; i++) {
2310                 iwe.cmd = SIOCGIWAP;
2311                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2312                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2313                 current_ev = iwe_stream_add_event(info, current_ev,
2314                                                   extra + IW_SCAN_MAX_DATA,
2315                                                   &iwe, IW_EV_ADDR_LEN);
2316
2317                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2318                 if (iwe.u.data.length > 32)
2319                         iwe.u.data.length = 32;
2320                 iwe.cmd = SIOCGIWESSID;
2321                 iwe.u.data.flags = 1;
2322                 current_ev = iwe_stream_add_point(info, current_ev,
2323                                                   extra + IW_SCAN_MAX_DATA,
2324                                                   &iwe, priv->BSSinfo[i].SSID);
2325
2326                 iwe.cmd = SIOCGIWMODE;
2327                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2328                 current_ev = iwe_stream_add_event(info, current_ev,
2329                                                   extra + IW_SCAN_MAX_DATA,
2330                                                   &iwe, IW_EV_UINT_LEN);
2331
2332                 iwe.cmd = SIOCGIWFREQ;
2333                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2334                 iwe.u.freq.e = 0;
2335                 current_ev = iwe_stream_add_event(info, current_ev,
2336                                                   extra + IW_SCAN_MAX_DATA,
2337                                                   &iwe, IW_EV_FREQ_LEN);
2338
2339                 /* Add quality statistics */
2340                 iwe.cmd = IWEVQUAL;
2341                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2342                 iwe.u.qual.qual  = iwe.u.qual.level;
2343                 /* iwe.u.qual.noise  = SOMETHING */
2344                 current_ev = iwe_stream_add_event(info, current_ev,
2345                                                   extra + IW_SCAN_MAX_DATA,
2346                                                   &iwe, IW_EV_QUAL_LEN);
2347
2348
2349                 iwe.cmd = SIOCGIWENCODE;
2350                 if (priv->BSSinfo[i].UsingWEP)
2351                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2352                 else
2353                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2354                 iwe.u.data.length = 0;
2355                 current_ev = iwe_stream_add_point(info, current_ev,
2356                                                   extra + IW_SCAN_MAX_DATA,
2357                                                   &iwe, NULL);
2358         }
2359
2360         /* Length of data */
2361         dwrq->length = (current_ev - extra);
2362         dwrq->flags = 0;
2363
2364         return 0;
2365 }
2366
2367 static int atmel_get_range(struct net_device *dev,
2368                            struct iw_request_info *info,
2369                            struct iw_point *dwrq,
2370                            char *extra)
2371 {
2372         struct atmel_private *priv = netdev_priv(dev);
2373         struct iw_range *range = (struct iw_range *) extra;
2374         int k, i, j;
2375
2376         dwrq->length = sizeof(struct iw_range);
2377         memset(range, 0, sizeof(struct iw_range));
2378         range->min_nwid = 0x0000;
2379         range->max_nwid = 0x0000;
2380         range->num_channels = 0;
2381         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2382                 if (priv->reg_domain == channel_table[j].reg_domain) {
2383                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2384                         break;
2385                 }
2386         if (range->num_channels != 0) {
2387                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2388                         range->freq[k].i = i; /* List index */
2389                         range->freq[k].m = frequency_list[i - 1] * 100000;
2390                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2391                 }
2392                 range->num_frequency = k;
2393         }
2394
2395         range->max_qual.qual = 100;
2396         range->max_qual.level = 100;
2397         range->max_qual.noise = 0;
2398         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2399
2400         range->avg_qual.qual = 50;
2401         range->avg_qual.level = 50;
2402         range->avg_qual.noise = 0;
2403         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2404
2405         range->sensitivity = 0;
2406
2407         range->bitrate[0] =  1000000;
2408         range->bitrate[1] =  2000000;
2409         range->bitrate[2] =  5500000;
2410         range->bitrate[3] = 11000000;
2411         range->num_bitrates = 4;
2412
2413         range->min_rts = 0;
2414         range->max_rts = 2347;
2415         range->min_frag = 256;
2416         range->max_frag = 2346;
2417
2418         range->encoding_size[0] = 5;
2419         range->encoding_size[1] = 13;
2420         range->num_encoding_sizes = 2;
2421         range->max_encoding_tokens = 4;
2422
2423         range->pmp_flags = IW_POWER_ON;
2424         range->pmt_flags = IW_POWER_ON;
2425         range->pm_capa = 0;
2426
2427         range->we_version_source = WIRELESS_EXT;
2428         range->we_version_compiled = WIRELESS_EXT;
2429         range->retry_capa = IW_RETRY_LIMIT ;
2430         range->retry_flags = IW_RETRY_LIMIT;
2431         range->r_time_flags = 0;
2432         range->min_retry = 1;
2433         range->max_retry = 65535;
2434
2435         return 0;
2436 }
2437
2438 static int atmel_set_wap(struct net_device *dev,
2439                          struct iw_request_info *info,
2440                          struct sockaddr *awrq,
2441                          char *extra)
2442 {
2443         struct atmel_private *priv = netdev_priv(dev);
2444         int i;
2445         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2446         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2447         unsigned long flags;
2448
2449         if (awrq->sa_family != ARPHRD_ETHER)
2450                 return -EINVAL;
2451
2452         if (!memcmp(any, awrq->sa_data, 6) ||
2453             !memcmp(off, awrq->sa_data, 6)) {
2454                 del_timer_sync(&priv->management_timer);
2455                 spin_lock_irqsave(&priv->irqlock, flags);
2456                 atmel_scan(priv, 1);
2457                 spin_unlock_irqrestore(&priv->irqlock, flags);
2458                 return 0;
2459         }
2460
2461         for (i = 0; i < priv->BSS_list_entries; i++) {
2462                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2463                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2464                                 return -EINVAL;
2465                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2466                                 return -EINVAL;
2467                         } else {
2468                                 del_timer_sync(&priv->management_timer);
2469                                 spin_lock_irqsave(&priv->irqlock, flags);
2470                                 atmel_join_bss(priv, i);
2471                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2472                                 return 0;
2473                         }
2474                 }
2475         }
2476
2477         return -EINVAL;
2478 }
2479
2480 static int atmel_config_commit(struct net_device *dev,
2481                                struct iw_request_info *info,    /* NULL */
2482                                void *zwrq,                      /* NULL */
2483                                char *extra)                     /* NULL */
2484 {
2485         return atmel_open(dev);
2486 }
2487
2488 static const iw_handler atmel_handler[] =
2489 {
2490         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2491         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2492         (iw_handler) NULL,                      /* SIOCSIWNWID */
2493         (iw_handler) NULL,                      /* SIOCGIWNWID */
2494         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2495         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2496         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2497         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2498         (iw_handler) NULL,                      /* SIOCSIWSENS */
2499         (iw_handler) NULL,                      /* SIOCGIWSENS */
2500         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2501         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2502         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2503         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2504         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2505         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2506         (iw_handler) NULL,                      /* SIOCSIWSPY */
2507         (iw_handler) NULL,                      /* SIOCGIWSPY */
2508         (iw_handler) NULL,                      /* -- hole -- */
2509         (iw_handler) NULL,                      /* -- hole -- */
2510         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2511         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2512         (iw_handler) NULL,                      /* -- hole -- */
2513         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2514         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2515         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2516         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2517         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2518         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2519         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2520         (iw_handler) NULL,                      /* -- hole -- */
2521         (iw_handler) NULL,                      /* -- hole -- */
2522         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2523         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2524         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2525         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2526         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2527         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2528         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2529         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2530         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2531         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2532         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2533         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2534         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2535         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2536         (iw_handler) NULL,                      /* -- hole -- */
2537         (iw_handler) NULL,                      /* -- hole -- */
2538         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2539         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2540         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2541         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2542         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2543         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2544         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2545 };
2546
2547 static const iw_handler atmel_private_handler[] =
2548 {
2549         NULL,                           /* SIOCIWFIRSTPRIV */
2550 };
2551
2552 typedef struct atmel_priv_ioctl {
2553         char id[32];
2554         unsigned char __user *data;
2555         unsigned short len;
2556 } atmel_priv_ioctl;
2557
2558 #define ATMELFWL        SIOCIWFIRSTPRIV
2559 #define ATMELIDIFC      ATMELFWL + 1
2560 #define ATMELRD         ATMELFWL + 2
2561 #define ATMELMAGIC 0x51807
2562 #define REGDOMAINSZ 20
2563
2564 static const struct iw_priv_args atmel_private_args[] = {
2565         {
2566                 .cmd = ATMELFWL,
2567                 .set_args = IW_PRIV_TYPE_BYTE
2568                                 | IW_PRIV_SIZE_FIXED
2569                                 | sizeof (atmel_priv_ioctl),
2570                 .get_args = IW_PRIV_TYPE_NONE,
2571                 .name = "atmelfwl"
2572         }, {
2573                 .cmd = ATMELIDIFC,
2574                 .set_args = IW_PRIV_TYPE_NONE,
2575                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2576                 .name = "atmelidifc"
2577         }, {
2578                 .cmd = ATMELRD,
2579                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2580                 .get_args = IW_PRIV_TYPE_NONE,
2581                 .name = "regdomain"
2582         },
2583 };
2584
2585 static const struct iw_handler_def atmel_handler_def =
2586 {
2587         .num_standard   = ARRAY_SIZE(atmel_handler),
2588         .num_private    = ARRAY_SIZE(atmel_private_handler),
2589         .num_private_args = ARRAY_SIZE(atmel_private_args),
2590         .standard       = (iw_handler *) atmel_handler,
2591         .private        = (iw_handler *) atmel_private_handler,
2592         .private_args   = (struct iw_priv_args *) atmel_private_args,
2593         .get_wireless_stats = atmel_get_wireless_stats
2594 };
2595
2596 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2597 {
2598         int i, rc = 0;
2599         struct atmel_private *priv = netdev_priv(dev);
2600         atmel_priv_ioctl com;
2601         struct iwreq *wrq = (struct iwreq *) rq;
2602         unsigned char *new_firmware;
2603         char domain[REGDOMAINSZ + 1];
2604
2605         switch (cmd) {
2606         case ATMELIDIFC:
2607                 wrq->u.param.value = ATMELMAGIC;
2608                 break;
2609
2610         case ATMELFWL:
2611                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2612                         rc = -EFAULT;
2613                         break;
2614                 }
2615
2616                 if (!capable(CAP_NET_ADMIN)) {
2617                         rc = -EPERM;
2618                         break;
2619                 }
2620
2621                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2622                         rc = -ENOMEM;
2623                         break;
2624                 }
2625
2626                 if (copy_from_user(new_firmware, com.data, com.len)) {
2627                         kfree(new_firmware);
2628                         rc = -EFAULT;
2629                         break;
2630                 }
2631
2632                 kfree(priv->firmware);
2633
2634                 priv->firmware = new_firmware;
2635                 priv->firmware_length = com.len;
2636                 strncpy(priv->firmware_id, com.id, 31);
2637                 priv->firmware_id[31] = '\0';
2638                 break;
2639
2640         case ATMELRD:
2641                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2642                         rc = -EFAULT;
2643                         break;
2644                 }
2645
2646                 if (!capable(CAP_NET_ADMIN)) {
2647                         rc = -EPERM;
2648                         break;
2649                 }
2650
2651                 domain[REGDOMAINSZ] = 0;
2652                 rc = -EINVAL;
2653                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2654                         /* strcasecmp doesn't exist in the library */
2655                         char *a = channel_table[i].name;
2656                         char *b = domain;
2657                         while (*a) {
2658                                 char c1 = *a++;
2659                                 char c2 = *b++;
2660                                 if (tolower(c1) != tolower(c2))
2661                                         break;
2662                         }
2663                         if (!*a && !*b) {
2664                                 priv->config_reg_domain = channel_table[i].reg_domain;
2665                                 rc = 0;
2666                         }
2667                 }
2668
2669                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2670                         rc = atmel_open(dev);
2671                 break;
2672
2673         default:
2674                 rc = -EOPNOTSUPP;
2675         }
2676
2677         return rc;
2678 }
2679
2680 struct auth_body {
2681         __le16 alg;
2682         __le16 trans_seq;
2683         __le16 status;
2684         u8 el_id;
2685         u8 chall_text_len;
2686         u8 chall_text[253];
2687 };
2688
2689 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2690 {
2691         int old_state = priv->station_state;
2692
2693         if (new_state == old_state)
2694                 return;
2695
2696         priv->station_state = new_state;
2697
2698         if (new_state == STATION_STATE_READY) {
2699                 netif_start_queue(priv->dev);
2700                 netif_carrier_on(priv->dev);
2701         }
2702
2703         if (old_state == STATION_STATE_READY) {
2704                 netif_carrier_off(priv->dev);
2705                 if (netif_running(priv->dev))
2706                         netif_stop_queue(priv->dev);
2707                 priv->last_beacon_timestamp = 0;
2708         }
2709 }
2710
2711 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2712 {
2713         struct {
2714                 u8 BSSID[6];
2715                 u8 SSID[MAX_SSID_LENGTH];
2716                 u8 scan_type;
2717                 u8 channel;
2718                 __le16 BSS_type;
2719                 __le16 min_channel_time;
2720                 __le16 max_channel_time;
2721                 u8 options;
2722                 u8 SSID_size;
2723         } cmd;
2724
2725         memset(cmd.BSSID, 0xff, 6);
2726
2727         if (priv->fast_scan) {
2728                 cmd.SSID_size = priv->SSID_size;
2729                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2730                 cmd.min_channel_time = cpu_to_le16(10);
2731                 cmd.max_channel_time = cpu_to_le16(50);
2732         } else {
2733                 priv->BSS_list_entries = 0;
2734                 cmd.SSID_size = 0;
2735                 cmd.min_channel_time = cpu_to_le16(10);
2736                 cmd.max_channel_time = cpu_to_le16(120);
2737         }
2738
2739         cmd.options = 0;
2740
2741         if (!specific_ssid)
2742                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2743
2744         cmd.channel = (priv->channel & 0x7f);
2745         cmd.scan_type = SCAN_TYPE_ACTIVE;
2746         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2747                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2748
2749         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2750
2751         /* This must come after all hardware access to avoid being messed up
2752            by stuff happening in interrupt context after we leave STATE_DOWN */
2753         atmel_enter_state(priv, STATION_STATE_SCANNING);
2754 }
2755
2756 static void join(struct atmel_private *priv, int type)
2757 {
2758         struct {
2759                 u8 BSSID[6];
2760                 u8 SSID[MAX_SSID_LENGTH];
2761                 u8 BSS_type; /* this is a short in a scan command - weird */
2762                 u8 channel;
2763                 __le16 timeout;
2764                 u8 SSID_size;
2765                 u8 reserved;
2766         } cmd;
2767
2768         cmd.SSID_size = priv->SSID_size;
2769         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2770         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2771         cmd.channel = (priv->channel & 0x7f);
2772         cmd.BSS_type = type;
2773         cmd.timeout = cpu_to_le16(2000);
2774
2775         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2776 }
2777
2778 static void start(struct atmel_private *priv, int type)
2779 {
2780         struct {
2781                 u8 BSSID[6];
2782                 u8 SSID[MAX_SSID_LENGTH];
2783                 u8 BSS_type;
2784                 u8 channel;
2785                 u8 SSID_size;
2786                 u8 reserved[3];
2787         } cmd;
2788
2789         cmd.SSID_size = priv->SSID_size;
2790         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2791         memcpy(cmd.BSSID, priv->BSSID, 6);
2792         cmd.BSS_type = type;
2793         cmd.channel = (priv->channel & 0x7f);
2794
2795         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2796 }
2797
2798 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2799                                 u8 channel)
2800 {
2801         int rejoin = 0;
2802         int new = capability & MFIE_TYPE_POWER_CONSTRAINT ?
2803                 SHORT_PREAMBLE : LONG_PREAMBLE;
2804
2805         if (priv->preamble != new) {
2806                 priv->preamble = new;
2807                 rejoin = 1;
2808                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2809         }
2810
2811         if (priv->channel != channel) {
2812                 priv->channel = channel;
2813                 rejoin = 1;
2814                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2815         }
2816
2817         if (rejoin) {
2818                 priv->station_is_associated = 0;
2819                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2820
2821                 if (priv->operating_mode == IW_MODE_INFRA)
2822                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2823                 else
2824                         join(priv, BSS_TYPE_AD_HOC);
2825         }
2826 }
2827
2828 static void send_authentication_request(struct atmel_private *priv, u16 system,
2829                                         u8 *challenge, int challenge_len)
2830 {
2831         struct ieee80211_hdr_4addr header;
2832         struct auth_body auth;
2833
2834         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2835         header.duration_id = cpu_to_le16(0x8000);
2836         header.seq_ctl = 0;
2837         memcpy(header.addr1, priv->CurrentBSSID, 6);
2838         memcpy(header.addr2, priv->dev->dev_addr, 6);
2839         memcpy(header.addr3, priv->CurrentBSSID, 6);
2840
2841         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2842                 /* no WEP for authentication frames with TrSeqNo 1 */
2843                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2844
2845         auth.alg = cpu_to_le16(system);
2846
2847         auth.status = 0;
2848         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2849         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2850         priv->CurrentAuthentTransactionSeqNum += 2;
2851
2852         if (challenge_len != 0) {
2853                 auth.el_id = 16; /* challenge_text */
2854                 auth.chall_text_len = challenge_len;
2855                 memcpy(auth.chall_text, challenge, challenge_len);
2856                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2857         } else {
2858                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2859         }
2860 }
2861
2862 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2863 {
2864         u8 *ssid_el_p;
2865         int bodysize;
2866         struct ieee80211_hdr_4addr header;
2867         struct ass_req_format {
2868                 __le16 capability;
2869                 __le16 listen_interval;
2870                 u8 ap[6]; /* nothing after here directly accessible */
2871                 u8 ssid_el_id;
2872                 u8 ssid_len;
2873                 u8 ssid[MAX_SSID_LENGTH];
2874                 u8 sup_rates_el_id;
2875                 u8 sup_rates_len;
2876                 u8 rates[4];
2877         } body;
2878
2879         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2880                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2881         header.duration_id = cpu_to_le16(0x8000);
2882         header.seq_ctl = 0;
2883
2884         memcpy(header.addr1, priv->CurrentBSSID, 6);
2885         memcpy(header.addr2, priv->dev->dev_addr, 6);
2886         memcpy(header.addr3, priv->CurrentBSSID, 6);
2887
2888         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2889         if (priv->wep_is_on)
2890                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2891         if (priv->preamble == SHORT_PREAMBLE)
2892                 body.capability |= cpu_to_le16(MFIE_TYPE_POWER_CONSTRAINT);
2893
2894         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2895
2896         /* current AP address - only in reassoc frame */
2897         if (is_reassoc) {
2898                 memcpy(body.ap, priv->CurrentBSSID, 6);
2899                 ssid_el_p = (u8 *)&body.ssid_el_id;
2900                 bodysize = 18 + priv->SSID_size;
2901         } else {
2902                 ssid_el_p = (u8 *)&body.ap[0];
2903                 bodysize = 12 + priv->SSID_size;
2904         }
2905
2906         ssid_el_p[0] = MFIE_TYPE_SSID;
2907         ssid_el_p[1] = priv->SSID_size;
2908         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2909         ssid_el_p[2 + priv->SSID_size] = MFIE_TYPE_RATES;
2910         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2911         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2912
2913         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2914 }
2915
2916 static int is_frame_from_current_bss(struct atmel_private *priv,
2917                                      struct ieee80211_hdr_4addr *header)
2918 {
2919         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2920                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2921         else
2922                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2923 }
2924
2925 static int retrieve_bss(struct atmel_private *priv)
2926 {
2927         int i;
2928         int max_rssi = -128;
2929         int max_index = -1;
2930
2931         if (priv->BSS_list_entries == 0)
2932                 return -1;
2933
2934         if (priv->connect_to_any_BSS) {
2935                 /* Select a BSS with the max-RSSI but of the same type and of
2936                    the same WEP mode and that it is not marked as 'bad' (i.e.
2937                    we had previously failed to connect to this BSS with the
2938                    settings that we currently use) */
2939                 priv->current_BSS = 0;
2940                 for (i = 0; i < priv->BSS_list_entries; i++) {
2941                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2942                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2943                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2944                             !(priv->BSSinfo[i].channel & 0x80)) {
2945                                 max_rssi = priv->BSSinfo[i].RSSI;
2946                                 priv->current_BSS = max_index = i;
2947                         }
2948                 }
2949                 return max_index;
2950         }
2951
2952         for (i = 0; i < priv->BSS_list_entries; i++) {
2953                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2954                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2955                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2956                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2957                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2958                                 max_rssi = priv->BSSinfo[i].RSSI;
2959                                 max_index = i;
2960                         }
2961                 }
2962         }
2963         return max_index;
2964 }
2965
2966 static void store_bss_info(struct atmel_private *priv,
2967                            struct ieee80211_hdr_4addr *header, u16 capability,
2968                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2969                            u8 *ssid, int is_beacon)
2970 {
2971         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2972         int i, index;
2973
2974         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2975                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2976                         index = i;
2977
2978         /* If we process a probe and an entry from this BSS exists
2979            we will update the BSS entry with the info from this BSS.
2980            If we process a beacon we will only update RSSI */
2981
2982         if (index == -1) {
2983                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2984                         return;
2985                 index = priv->BSS_list_entries++;
2986                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2987                 priv->BSSinfo[index].RSSI = rssi;
2988         } else {
2989                 if (rssi > priv->BSSinfo[index].RSSI)
2990                         priv->BSSinfo[index].RSSI = rssi;
2991                 if (is_beacon)
2992                         return;
2993         }
2994
2995         priv->BSSinfo[index].channel = channel;
2996         priv->BSSinfo[index].beacon_period = beacon_period;
2997         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2998         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2999         priv->BSSinfo[index].SSIDsize = ssid_len;
3000
3001         if (capability & WLAN_CAPABILITY_IBSS)
3002                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3003         else if (capability & WLAN_CAPABILITY_ESS)
3004                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
3005
3006         priv->BSSinfo[index].preamble = capability & MFIE_TYPE_POWER_CONSTRAINT ?
3007                 SHORT_PREAMBLE : LONG_PREAMBLE;
3008 }
3009
3010 static void authenticate(struct atmel_private *priv, u16 frame_len)
3011 {
3012         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3013         u16 status = le16_to_cpu(auth->status);
3014         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3015         u16 system = le16_to_cpu(auth->alg);
3016
3017         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3018                 /* no WEP */
3019                 if (priv->station_was_associated) {
3020                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3021                         send_association_request(priv, 1);
3022                         return;
3023                 } else {
3024                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3025                         send_association_request(priv, 0);
3026                         return;
3027                 }
3028         }
3029
3030         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3031                 int should_associate = 0;
3032                 /* WEP */
3033                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3034                         return;
3035
3036                 if (system == WLAN_AUTH_OPEN) {
3037                         if (trans_seq_no == 0x0002) {
3038                                 should_associate = 1;
3039                         }
3040                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3041                         if (trans_seq_no == 0x0002 &&
3042                             auth->el_id == MFIE_TYPE_CHALLENGE) {
3043                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3044                                 return;
3045                         } else if (trans_seq_no == 0x0004) {
3046                                 should_associate = 1;
3047                         }
3048                 }
3049
3050                 if (should_associate) {
3051                         if(priv->station_was_associated) {
3052                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3053                                 send_association_request(priv, 1);
3054                                 return;
3055                         } else {
3056                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3057                                 send_association_request(priv, 0);
3058                                 return;
3059                         }
3060                 }
3061         }
3062
3063         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3064                 /* Flip back and forth between WEP auth modes until the max
3065                  * authentication tries has been exceeded.
3066                  */
3067                 if (system == WLAN_AUTH_OPEN) {
3068                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3069                         priv->exclude_unencrypted = 1;
3070                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3071                         return;
3072                 } else if (   system == WLAN_AUTH_SHARED_KEY
3073                            && priv->wep_is_on) {
3074                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3075                         priv->exclude_unencrypted = 0;
3076                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3077                         return;
3078                 } else if (priv->connect_to_any_BSS) {
3079                         int bss_index;
3080
3081                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3082
3083                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3084                                 atmel_join_bss(priv, bss_index);
3085                                 return;
3086                         }
3087                 }
3088         }
3089
3090         priv->AuthenticationRequestRetryCnt = 0;
3091         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3092         priv->station_is_associated = 0;
3093 }
3094
3095 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3096 {
3097         struct ass_resp_format {
3098                 __le16 capability;
3099                 __le16 status;
3100                 __le16 ass_id;
3101                 u8 el_id;
3102                 u8 length;
3103                 u8 rates[4];
3104         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3105
3106         u16 status = le16_to_cpu(ass_resp->status);
3107         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3108         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3109
3110         union iwreq_data wrqu;
3111
3112         if (frame_len < 8 + rates_len)
3113                 return;
3114
3115         if (status == WLAN_STATUS_SUCCESS) {
3116                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3117                         priv->AssociationRequestRetryCnt = 0;
3118                 else
3119                         priv->ReAssociationRequestRetryCnt = 0;
3120
3121                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3122                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3123                 atmel_set_mib(priv, Phy_Mib_Type,
3124                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3125                 if (priv->power_mode == 0) {
3126                         priv->listen_interval = 1;
3127                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3128                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3129                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3130                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3131                 } else {
3132                         priv->listen_interval = 2;
3133                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3134                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3135                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3136                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3137                 }
3138
3139                 priv->station_is_associated = 1;
3140                 priv->station_was_associated = 1;
3141                 atmel_enter_state(priv, STATION_STATE_READY);
3142
3143                 /* Send association event to userspace */
3144                 wrqu.data.length = 0;
3145                 wrqu.data.flags = 0;
3146                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3147                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3148                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3149
3150                 return;
3151         }
3152
3153         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3154             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3155             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3156             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3157                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3158                 priv->AssociationRequestRetryCnt++;
3159                 send_association_request(priv, 0);
3160                 return;
3161         }
3162
3163         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3164             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3165             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3166             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3167                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3168                 priv->ReAssociationRequestRetryCnt++;
3169                 send_association_request(priv, 1);
3170                 return;
3171         }
3172
3173         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3174         priv->station_is_associated = 0;
3175
3176         if (priv->connect_to_any_BSS) {
3177                 int bss_index;
3178                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3179
3180                 if ((bss_index = retrieve_bss(priv)) != -1)
3181                         atmel_join_bss(priv, bss_index);
3182         }
3183 }
3184
3185 void atmel_join_bss(struct atmel_private *priv, int bss_index)
3186 {
3187         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3188
3189         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3190         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3191
3192         /* The WPA stuff cares about the current AP address */
3193         if (priv->use_wpa)
3194                 build_wpa_mib(priv);
3195
3196         /* When switching to AdHoc turn OFF Power Save if needed */
3197
3198         if (bss->BSStype == IW_MODE_ADHOC &&
3199             priv->operating_mode != IW_MODE_ADHOC &&
3200             priv->power_mode) {
3201                 priv->power_mode = 0;
3202                 priv->listen_interval = 1;
3203                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3204                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3205                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3206                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3207         }
3208
3209         priv->operating_mode = bss->BSStype;
3210         priv->channel = bss->channel & 0x7f;
3211         priv->beacon_period = bss->beacon_period;
3212
3213         if (priv->preamble != bss->preamble) {
3214                 priv->preamble = bss->preamble;
3215                 atmel_set_mib8(priv, Local_Mib_Type,
3216                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3217         }
3218
3219         if (!priv->wep_is_on && bss->UsingWEP) {
3220                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3221                 priv->station_is_associated = 0;
3222                 return;
3223         }
3224
3225         if (priv->wep_is_on && !bss->UsingWEP) {
3226                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3227                 priv->station_is_associated = 0;
3228                 return;
3229         }
3230
3231         atmel_enter_state(priv, STATION_STATE_JOINNING);
3232
3233         if (priv->operating_mode == IW_MODE_INFRA)
3234                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3235         else
3236                 join(priv, BSS_TYPE_AD_HOC);
3237 }
3238
3239 static void restart_search(struct atmel_private *priv)
3240 {
3241         int bss_index;
3242
3243         if (!priv->connect_to_any_BSS) {
3244                 atmel_scan(priv, 1);
3245         } else {
3246                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3247
3248                 if ((bss_index = retrieve_bss(priv)) != -1)
3249                         atmel_join_bss(priv, bss_index);
3250                 else
3251                         atmel_scan(priv, 0);
3252         }
3253 }
3254
3255 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3256 {
3257         u8 old = priv->wstats.qual.level;
3258         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3259
3260         switch (priv->firmware_type) {
3261                 case ATMEL_FW_TYPE_502E:
3262                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3263                         break;
3264                 default:
3265                         break;
3266         }
3267
3268         rssi = rssi * 100 / max_rssi;
3269         if ((rssi + old) % 2)
3270                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3271         else
3272                 priv->wstats.qual.level = (rssi + old) / 2;
3273         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3274         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3275 }
3276
3277 static void atmel_smooth_qual(struct atmel_private *priv)
3278 {
3279         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3280         while (time_diff--) {
3281                 priv->last_qual += HZ;
3282                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3283                 priv->wstats.qual.qual +=
3284                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3285                 priv->beacons_this_sec = 0;
3286         }
3287         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3288         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3289 }
3290
3291 /* deals with incoming managment frames. */
3292 static void atmel_management_frame(struct atmel_private *priv,
3293                                    struct ieee80211_hdr_4addr *header,
3294                                    u16 frame_len, u8 rssi)
3295 {
3296         u16 subtype;
3297
3298         subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
3299         switch (subtype) {
3300         case IEEE80211_STYPE_BEACON:
3301         case IEEE80211_STYPE_PROBE_RESP:
3302
3303                 /* beacon frame has multiple variable-length fields -
3304                    never let an engineer loose with a data structure design. */
3305                 {
3306                         struct beacon_format {
3307                                 __le64 timestamp;
3308                                 __le16 interval;
3309                                 __le16 capability;
3310                                 u8 ssid_el_id;
3311                                 u8 ssid_length;
3312                                 /* ssid here */
3313                                 u8 rates_el_id;
3314                                 u8 rates_length;
3315                                 /* rates here */
3316                                 u8 ds_el_id;
3317                                 u8 ds_length;
3318                                 /* ds here */
3319                         } *beacon = (struct beacon_format *)priv->rx_buf;
3320
3321                         u8 channel, rates_length, ssid_length;
3322                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3323                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3324                         u16 capability = le16_to_cpu(beacon->capability);
3325                         u8 *beaconp = priv->rx_buf;
3326                         ssid_length = beacon->ssid_length;
3327                         /* this blows chunks. */
3328                         if (frame_len < 14 || frame_len < ssid_length + 15)
3329                                 return;
3330                         rates_length = beaconp[beacon->ssid_length + 15];
3331                         if (frame_len < ssid_length + rates_length + 18)
3332                                 return;
3333                         if (ssid_length >  MAX_SSID_LENGTH)
3334                                 return;
3335                         channel = beaconp[ssid_length + rates_length + 18];
3336
3337                         if (priv->station_state == STATION_STATE_READY) {
3338                                 smooth_rssi(priv, rssi);
3339                                 if (is_frame_from_current_bss(priv, header)) {
3340                                         priv->beacons_this_sec++;
3341                                         atmel_smooth_qual(priv);
3342                                         if (priv->last_beacon_timestamp) {
3343                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3344                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3345                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3346                                                 if (beacons > 1)
3347                                                         priv->wstats.miss.beacon += beacons - 1;
3348                                         }
3349                                         priv->last_beacon_timestamp = timestamp;
3350                                         handle_beacon_probe(priv, capability, channel);
3351                                 }
3352                         }
3353
3354                         if (priv->station_state == STATION_STATE_SCANNING)
3355                                 store_bss_info(priv, header, capability,
3356                                                beacon_interval, channel, rssi,
3357                                                ssid_length,
3358                                                &beacon->rates_el_id,
3359                                                subtype == IEEE80211_STYPE_BEACON);
3360                 }
3361                 break;
3362
3363         case IEEE80211_STYPE_AUTH:
3364
3365                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3366                         authenticate(priv, frame_len);
3367
3368                 break;
3369
3370         case IEEE80211_STYPE_ASSOC_RESP:
3371         case IEEE80211_STYPE_REASSOC_RESP:
3372
3373                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3374                     priv->station_state == STATION_STATE_REASSOCIATING)
3375                         associate(priv, frame_len, subtype);
3376
3377                 break;
3378
3379         case IEEE80211_STYPE_DISASSOC:
3380                 if (priv->station_is_associated &&
3381                     priv->operating_mode == IW_MODE_INFRA &&
3382                     is_frame_from_current_bss(priv, header)) {
3383                         priv->station_was_associated = 0;
3384                         priv->station_is_associated = 0;
3385
3386                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3387                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3388                 }
3389
3390                 break;
3391
3392         case IEEE80211_STYPE_DEAUTH:
3393                 if (priv->operating_mode == IW_MODE_INFRA &&
3394                     is_frame_from_current_bss(priv, header)) {
3395                         priv->station_was_associated = 0;
3396
3397                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3398                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3399                 }
3400
3401                 break;
3402         }
3403 }
3404
3405 /* run when timer expires */
3406 static void atmel_management_timer(u_long a)
3407 {
3408         struct net_device *dev = (struct net_device *) a;
3409         struct atmel_private *priv = netdev_priv(dev);
3410         unsigned long flags;
3411
3412         /* Check if the card has been yanked. */
3413         if (priv->card && priv->present_callback &&
3414                 !(*priv->present_callback)(priv->card))
3415                 return;
3416
3417         spin_lock_irqsave(&priv->irqlock, flags);
3418
3419         switch (priv->station_state) {
3420
3421         case STATION_STATE_AUTHENTICATING:
3422                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3423                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3424                         priv->station_is_associated = 0;
3425                         priv->AuthenticationRequestRetryCnt = 0;
3426                         restart_search(priv);
3427                 } else {
3428                         int auth = WLAN_AUTH_OPEN;
3429                         priv->AuthenticationRequestRetryCnt++;
3430                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3431                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3432                         if (priv->wep_is_on && priv->exclude_unencrypted)
3433                                 auth = WLAN_AUTH_SHARED_KEY;
3434                         send_authentication_request(priv, auth, NULL, 0);
3435           }
3436           break;
3437
3438         case STATION_STATE_ASSOCIATING:
3439                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3440                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3441                         priv->station_is_associated = 0;
3442                         priv->AssociationRequestRetryCnt = 0;
3443                         restart_search(priv);
3444                 } else {
3445                         priv->AssociationRequestRetryCnt++;
3446                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3447                         send_association_request(priv, 0);
3448                 }
3449           break;
3450
3451         case STATION_STATE_REASSOCIATING:
3452                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3453                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3454                         priv->station_is_associated = 0;
3455                         priv->ReAssociationRequestRetryCnt = 0;
3456                         restart_search(priv);
3457                 } else {
3458                         priv->ReAssociationRequestRetryCnt++;
3459                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3460                         send_association_request(priv, 1);
3461                 }
3462                 break;
3463
3464         default:
3465                 break;
3466         }
3467
3468         spin_unlock_irqrestore(&priv->irqlock, flags);
3469 }
3470
3471 static void atmel_command_irq(struct atmel_private *priv)
3472 {
3473         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3474         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3475         int fast_scan;
3476         union iwreq_data wrqu;
3477
3478         if (status == CMD_STATUS_IDLE ||
3479             status == CMD_STATUS_IN_PROGRESS)
3480                 return;
3481
3482         switch (command){
3483
3484         case CMD_Start:
3485                 if (status == CMD_STATUS_COMPLETE) {
3486                         priv->station_was_associated = priv->station_is_associated;
3487                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3488                                       (u8 *)priv->CurrentBSSID, 6);
3489                         atmel_enter_state(priv, STATION_STATE_READY);
3490                 }
3491                 break;
3492
3493         case CMD_Scan:
3494                 fast_scan = priv->fast_scan;
3495                 priv->fast_scan = 0;
3496
3497                 if (status != CMD_STATUS_COMPLETE) {
3498                         atmel_scan(priv, 1);
3499                 } else {
3500                         int bss_index = retrieve_bss(priv);
3501                         int notify_scan_complete = 1;
3502                         if (bss_index != -1) {
3503                                 atmel_join_bss(priv, bss_index);
3504                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3505                                    priv->SSID_size != 0) {
3506                                 start(priv, BSS_TYPE_AD_HOC);
3507                         } else {
3508                                 priv->fast_scan = !fast_scan;
3509                                 atmel_scan(priv, 1);
3510                                 notify_scan_complete = 0;
3511                         }
3512                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3513                         if (notify_scan_complete) {
3514                                 wrqu.data.length = 0;
3515                                 wrqu.data.flags = 0;
3516                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3517                         }
3518                 }
3519                 break;
3520
3521         case CMD_SiteSurvey:
3522                 priv->fast_scan = 0;
3523
3524                 if (status != CMD_STATUS_COMPLETE)
3525                         return;
3526
3527                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3528                 if (priv->station_is_associated) {
3529                         atmel_enter_state(priv, STATION_STATE_READY);
3530                         wrqu.data.length = 0;
3531                         wrqu.data.flags = 0;
3532                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3533                 } else {
3534                         atmel_scan(priv, 1);
3535                 }
3536                 break;
3537
3538         case CMD_Join:
3539                 if (status == CMD_STATUS_COMPLETE) {
3540                         if (priv->operating_mode == IW_MODE_ADHOC) {
3541                                 priv->station_was_associated = priv->station_is_associated;
3542                                 atmel_enter_state(priv, STATION_STATE_READY);
3543                         } else {
3544                                 int auth = WLAN_AUTH_OPEN;
3545                                 priv->AuthenticationRequestRetryCnt = 0;
3546                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3547
3548                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3549                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3550                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3551                                         auth = WLAN_AUTH_SHARED_KEY;
3552                                 send_authentication_request(priv, auth, NULL, 0);
3553                         }
3554                         return;
3555                 }
3556
3557                 atmel_scan(priv, 1);
3558         }
3559 }
3560
3561 static int atmel_wakeup_firmware(struct atmel_private *priv)
3562 {
3563         struct host_info_struct *iface = &priv->host_info;
3564         u16 mr1, mr3;
3565         int i;
3566
3567         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3568                 atmel_set_gcr(priv->dev, GCR_REMAP);
3569
3570         /* wake up on-board processor */
3571         atmel_clear_gcr(priv->dev, 0x0040);
3572         atmel_write16(priv->dev, BSR, BSS_SRAM);
3573
3574         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3575                 mdelay(100);
3576
3577         /* and wait for it */
3578         for (i = LOOP_RETRY_LIMIT; i; i--) {
3579                 mr1 = atmel_read16(priv->dev, MR1);
3580                 mr3 = atmel_read16(priv->dev, MR3);
3581
3582                 if (mr3 & MAC_BOOT_COMPLETE)
3583                         break;
3584                 if (mr1 & MAC_BOOT_COMPLETE &&
3585                     priv->bus_type == BUS_TYPE_PCCARD)
3586                         break;
3587         }
3588
3589         if (i == 0) {
3590                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3591                 return -EIO;
3592         }
3593
3594         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3595                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3596                 return -ENODEV;
3597         }
3598
3599         /* now check for completion of MAC initialization through
3600            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3601            MAC initialization, check completion status, set interrupt mask,
3602            enables interrupts and calls Tx and Rx initialization functions */
3603
3604         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3605
3606         for (i = LOOP_RETRY_LIMIT; i; i--) {
3607                 mr1 = atmel_read16(priv->dev, MR1);
3608                 mr3 = atmel_read16(priv->dev, MR3);
3609
3610                 if (mr3 & MAC_INIT_COMPLETE)
3611                         break;
3612                 if (mr1 & MAC_INIT_COMPLETE &&
3613                     priv->bus_type == BUS_TYPE_PCCARD)
3614                         break;
3615         }
3616
3617         if (i == 0) {
3618                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3619                                 priv->dev->name);
3620                 return -EIO;
3621         }
3622
3623         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3624         if ((mr3 & MAC_INIT_COMPLETE) &&
3625             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3626                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3627                 return -EIO;
3628         }
3629         if ((mr1 & MAC_INIT_COMPLETE) &&
3630             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3631                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3632                 return -EIO;
3633         }
3634
3635         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3636                            priv->host_info_base, sizeof(*iface));
3637
3638         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3639         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3640         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3641         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3642         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3643         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3644         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3645         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3646         iface->build_version = le16_to_cpu(iface->build_version);
3647         iface->command_pos = le16_to_cpu(iface->command_pos);
3648         iface->major_version = le16_to_cpu(iface->major_version);
3649         iface->minor_version = le16_to_cpu(iface->minor_version);
3650         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3651         iface->mac_status = le16_to_cpu(iface->mac_status);
3652
3653         return 0;
3654 }
3655
3656 /* determine type of memory and MAC address */
3657 static int probe_atmel_card(struct net_device *dev)
3658 {
3659         int rc = 0;
3660         struct atmel_private *priv = netdev_priv(dev);
3661
3662         /* reset pccard */
3663         if (priv->bus_type == BUS_TYPE_PCCARD)
3664                 atmel_write16(dev, GCR, 0x0060);
3665
3666         atmel_write16(dev, GCR, 0x0040);
3667         mdelay(500);
3668
3669         if (atmel_read16(dev, MR2) == 0) {
3670                 /* No stored firmware so load a small stub which just
3671                    tells us the MAC address */
3672                 int i;
3673                 priv->card_type = CARD_TYPE_EEPROM;
3674                 atmel_write16(dev, BSR, BSS_IRAM);
3675                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3676                 atmel_set_gcr(dev, GCR_REMAP);
3677                 atmel_clear_gcr(priv->dev, 0x0040);
3678                 atmel_write16(dev, BSR, BSS_SRAM);
3679                 for (i = LOOP_RETRY_LIMIT; i; i--)
3680                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3681                                 break;
3682                 if (i == 0) {
3683                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3684                 } else {
3685                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3686                         /* got address, now squash it again until the network
3687                            interface is opened */
3688                         if (priv->bus_type == BUS_TYPE_PCCARD)
3689                                 atmel_write16(dev, GCR, 0x0060);
3690                         atmel_write16(dev, GCR, 0x0040);
3691                         rc = 1;
3692                 }
3693         } else if (atmel_read16(dev, MR4) == 0) {
3694                 /* Mac address easy in this case. */
3695                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3696                 atmel_write16(dev,  BSR, 1);
3697                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3698                 atmel_write16(dev,  BSR, 0x200);
3699                 rc = 1;
3700         } else {
3701                 /* Standard firmware in flash, boot it up and ask
3702                    for the Mac Address */
3703                 priv->card_type = CARD_TYPE_SPI_FLASH;
3704                 if (atmel_wakeup_firmware(priv) == 0) {
3705                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3706
3707                         /* got address, now squash it again until the network
3708                            interface is opened */
3709                         if (priv->bus_type == BUS_TYPE_PCCARD)
3710                                 atmel_write16(dev, GCR, 0x0060);
3711                         atmel_write16(dev, GCR, 0x0040);
3712                         rc = 1;
3713                 }
3714         }
3715
3716         if (rc) {
3717                 if (dev->dev_addr[0] == 0xFF) {
3718                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3719                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3720                         memcpy(dev->dev_addr, default_mac, 6);
3721                 }
3722         }
3723
3724         return rc;
3725 }
3726
3727 /* Move the encyption information on the MIB structure.
3728    This routine is for the pre-WPA firmware: later firmware has
3729    a different format MIB and a different routine. */
3730 static void build_wep_mib(struct atmel_private *priv)
3731 {
3732         struct { /* NB this is matched to the hardware, don't change. */
3733                 u8 wep_is_on;
3734                 u8 default_key; /* 0..3 */
3735                 u8 reserved;
3736                 u8 exclude_unencrypted;
3737
3738                 u32 WEPICV_error_count;
3739                 u32 WEP_excluded_count;
3740
3741                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3742                 u8 encryption_level; /* 0, 1, 2 */
3743                 u8 reserved2[3];
3744         } mib;
3745         int i;
3746
3747         mib.wep_is_on = priv->wep_is_on;
3748         if (priv->wep_is_on) {
3749                 if (priv->wep_key_len[priv->default_key] > 5)
3750                         mib.encryption_level = 2;
3751                 else
3752                         mib.encryption_level = 1;
3753         } else {
3754                 mib.encryption_level = 0;
3755         }
3756
3757         mib.default_key = priv->default_key;
3758         mib.exclude_unencrypted = priv->exclude_unencrypted;
3759
3760         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3761                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3762
3763         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3764 }
3765
3766 static void build_wpa_mib(struct atmel_private *priv)
3767 {
3768         /* This is for the later (WPA enabled) firmware. */
3769
3770         struct { /* NB this is matched to the hardware, don't change. */
3771                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3772                 u8 receiver_address[6];
3773                 u8 wep_is_on;
3774                 u8 default_key; /* 0..3 */
3775                 u8 group_key;
3776                 u8 exclude_unencrypted;
3777                 u8 encryption_type;
3778                 u8 reserved;
3779
3780                 u32 WEPICV_error_count;
3781                 u32 WEP_excluded_count;
3782
3783                 u8 key_RSC[4][8];
3784         } mib;
3785
3786         int i;
3787
3788         mib.wep_is_on = priv->wep_is_on;
3789         mib.exclude_unencrypted = priv->exclude_unencrypted;
3790         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3791
3792         /* zero all the keys before adding in valid ones. */
3793         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3794
3795         if (priv->wep_is_on) {
3796                 /* There's a comment in the Atmel code to the effect that this
3797                    is only valid when still using WEP, it may need to be set to
3798                    something to use WPA */
3799                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3800
3801                 mib.default_key = mib.group_key = 255;
3802                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3803                         if (priv->wep_key_len[i] > 0) {
3804                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3805                                 if (i == priv->default_key) {
3806                                         mib.default_key = i;
3807                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3808                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3809                                 } else {
3810                                         mib.group_key = i;
3811                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3812                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3813                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3814                                 }
3815                         }
3816                 }
3817                 if (mib.default_key == 255)
3818                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3819                 if (mib.group_key == 255)
3820                         mib.group_key = mib.default_key;
3821
3822         }
3823
3824         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3825 }
3826
3827 static int reset_atmel_card(struct net_device *dev)
3828 {
3829         /* do everything necessary to wake up the hardware, including
3830            waiting for the lightning strike and throwing the knife switch....
3831
3832            set all the Mib values which matter in the card to match
3833            their settings in the atmel_private structure. Some of these
3834            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3835            can only be changed by tearing down the world and coming back through
3836            here.
3837
3838            This routine is also responsible for initialising some
3839            hardware-specific fields in the atmel_private structure,
3840            including a copy of the firmware's hostinfo stucture
3841            which is the route into the rest of the firmare datastructures. */
3842
3843         struct atmel_private *priv = netdev_priv(dev);
3844         u8 configuration;
3845         int old_state = priv->station_state;
3846         int err = 0;
3847
3848         /* data to add to the firmware names, in priority order
3849            this implemenents firmware versioning */
3850
3851         static char *firmware_modifier[] = {
3852                 "-wpa",
3853                 "",
3854                 NULL
3855         };
3856
3857         /* reset pccard */
3858         if (priv->bus_type == BUS_TYPE_PCCARD)
3859                 atmel_write16(priv->dev, GCR, 0x0060);
3860
3861         /* stop card , disable interrupts */
3862         atmel_write16(priv->dev, GCR, 0x0040);
3863
3864         if (priv->card_type == CARD_TYPE_EEPROM) {
3865                 /* copy in firmware if needed */
3866                 const struct firmware *fw_entry = NULL;
3867                 const unsigned char *fw;
3868                 int len = priv->firmware_length;
3869                 if (!(fw = priv->firmware)) {
3870                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3871                                 if (strlen(priv->firmware_id) == 0) {
3872                                         printk(KERN_INFO
3873                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3874                                                dev->name);
3875                                         printk(KERN_INFO
3876                                                "%s: if not, use the firmware= module parameter.\n",
3877                                                dev->name);
3878                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3879                                 }
3880                                 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3881                                 if (err != 0) {
3882                                         printk(KERN_ALERT
3883                                                "%s: firmware %s is missing, cannot continue.\n",
3884                                                dev->name, priv->firmware_id);
3885                                         return err;
3886                                 }
3887                         } else {
3888                                 int fw_index = 0;
3889                                 int success = 0;
3890
3891                                 /* get firmware filename entry based on firmware type ID */
3892                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3893                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3894                                         fw_index++;
3895
3896                                 /* construct the actual firmware file name */
3897                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3898                                         int i;
3899                                         for (i = 0; firmware_modifier[i]; i++) {
3900                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3901                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3902                                                 priv->firmware_id[31] = '\0';
3903                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3904                                                         success = 1;
3905                                                         break;
3906                                                 }
3907                                         }
3908                                 }
3909                                 if (!success) {
3910                                         printk(KERN_ALERT
3911                                                "%s: firmware %s is missing, cannot start.\n",
3912                                                dev->name, priv->firmware_id);
3913                                         priv->firmware_id[0] = '\0';
3914                                         return -ENOENT;
3915                                 }
3916                         }
3917
3918                         fw = fw_entry->data;
3919                         len = fw_entry->size;
3920                 }
3921
3922                 if (len <= 0x6000) {
3923                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3924                         atmel_copy_to_card(priv->dev, 0, fw, len);
3925                         atmel_set_gcr(priv->dev, GCR_REMAP);
3926                 } else {
3927                         /* Remap */
3928                         atmel_set_gcr(priv->dev, GCR_REMAP);
3929                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3930                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3931                         atmel_write16(priv->dev, BSR, 0x2ff);
3932                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3933                 }
3934
3935                 if (fw_entry)
3936                         release_firmware(fw_entry);
3937         }
3938
3939         err = atmel_wakeup_firmware(priv);
3940         if (err != 0)
3941                 return err;
3942
3943         /* Check the version and set the correct flag for wpa stuff,
3944            old and new firmware is incompatible.
3945            The pre-wpa 3com firmware reports major version 5,
3946            the wpa 3com firmware is major version 4 and doesn't need
3947            the 3com broken-ness filter. */
3948         priv->use_wpa = (priv->host_info.major_version == 4);
3949         priv->radio_on_broken = (priv->host_info.major_version == 5);
3950
3951         /* unmask all irq sources */
3952         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3953
3954         /* int Tx system and enable Tx */
3955         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3956         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3957         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3958         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3959
3960         priv->tx_desc_free = priv->host_info.tx_desc_count;
3961         priv->tx_desc_head = 0;
3962         priv->tx_desc_tail = 0;
3963         priv->tx_desc_previous = 0;
3964         priv->tx_free_mem = priv->host_info.tx_buff_size;
3965         priv->tx_buff_head = 0;
3966         priv->tx_buff_tail = 0;
3967
3968         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3969         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3970                                    configuration | FUNC_CTRL_TxENABLE);
3971
3972         /* init Rx system and enable */
3973         priv->rx_desc_head = 0;
3974
3975         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3976         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3977                                    configuration | FUNC_CTRL_RxENABLE);
3978
3979         if (!priv->radio_on_broken) {
3980                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3981                     CMD_STATUS_REJECTED_RADIO_OFF) {
3982                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
3983                                dev->name);
3984                         return -EIO;
3985                 }
3986         }
3987
3988         /* set up enough MIB values to run. */
3989         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3990         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3991         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3992         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3993         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3994         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3995         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3996         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3997                       priv->dev->dev_addr, 6);
3998         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3999         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4000         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4001         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4002         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4003         if (priv->use_wpa)
4004                 build_wpa_mib(priv);
4005         else
4006                 build_wep_mib(priv);
4007
4008         if (old_state == STATION_STATE_READY)
4009         {
4010                 union iwreq_data wrqu;
4011
4012                 wrqu.data.length = 0;
4013                 wrqu.data.flags = 0;
4014                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4015                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4016                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4017         }
4018
4019         return 0;
4020 }
4021
4022 static void atmel_send_command(struct atmel_private *priv, int command,
4023                                void *cmd, int cmd_size)
4024 {
4025         if (cmd)
4026                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4027                                    cmd, cmd_size);
4028
4029         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4030         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4031 }
4032
4033 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4034                                    void *cmd, int cmd_size)
4035 {
4036         int i, status;
4037
4038         atmel_send_command(priv, command, cmd, cmd_size);
4039
4040         for (i = 5000; i; i--) {
4041                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4042                 if (status != CMD_STATUS_IDLE &&
4043                     status != CMD_STATUS_IN_PROGRESS)
4044                         break;
4045                 udelay(20);
4046         }
4047
4048         if (i == 0) {
4049                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4050                 status =  CMD_STATUS_HOST_ERROR;
4051         } else {
4052                 if (command != CMD_EnableRadio)
4053                         status = CMD_STATUS_COMPLETE;
4054         }
4055
4056         return status;
4057 }
4058
4059 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4060 {
4061         struct get_set_mib m;
4062         m.type = type;
4063         m.size = 1;
4064         m.index = index;
4065
4066         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4067         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4068 }
4069
4070 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4071 {
4072         struct get_set_mib m;
4073         m.type = type;
4074         m.size = 1;
4075         m.index = index;
4076         m.data[0] = data;
4077
4078         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4079 }
4080
4081 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4082                             u16 data)
4083 {
4084         struct get_set_mib m;
4085         m.type = type;
4086         m.size = 2;
4087         m.index = index;
4088         m.data[0] = data;
4089         m.data[1] = data >> 8;
4090
4091         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4092 }
4093
4094 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4095                           u8 *data, int data_len)
4096 {
4097         struct get_set_mib m;
4098         m.type = type;
4099         m.size = data_len;
4100         m.index = index;
4101
4102         if (data_len > MIB_MAX_DATA_BYTES)
4103                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4104
4105         memcpy(m.data, data, data_len);
4106         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4107 }
4108
4109 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4110                           u8 *data, int data_len)
4111 {
4112         struct get_set_mib m;
4113         m.type = type;
4114         m.size = data_len;
4115         m.index = index;
4116
4117         if (data_len > MIB_MAX_DATA_BYTES)
4118                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4119
4120         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4121         atmel_copy_to_host(priv->dev, data,
4122                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4123 }
4124
4125 static void atmel_writeAR(struct net_device *dev, u16 data)
4126 {
4127         int i;
4128         outw(data, dev->base_addr + AR);
4129         /* Address register appears to need some convincing..... */
4130         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4131                 outw(data, dev->base_addr + AR);
4132 }
4133
4134 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4135                                const unsigned char *src, u16 len)
4136 {
4137         int i;
4138         atmel_writeAR(dev, dest);
4139         if (dest % 2) {
4140                 atmel_write8(dev, DR, *src);
4141                 src++; len--;
4142         }
4143         for (i = len; i > 1 ; i -= 2) {
4144                 u8 lb = *src++;
4145                 u8 hb = *src++;
4146                 atmel_write16(dev, DR, lb | (hb << 8));
4147         }
4148         if (i)
4149                 atmel_write8(dev, DR, *src);
4150 }
4151
4152 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4153                                u16 src, u16 len)
4154 {
4155         int i;
4156         atmel_writeAR(dev, src);
4157         if (src % 2) {
4158                 *dest = atmel_read8(dev, DR);
4159                 dest++; len--;
4160         }
4161         for (i = len; i > 1 ; i -= 2) {
4162                 u16 hw = atmel_read16(dev, DR);
4163                 *dest++ = hw;
4164                 *dest++ = hw >> 8;
4165         }
4166         if (i)
4167                 *dest = atmel_read8(dev, DR);
4168 }
4169
4170 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4171 {
4172         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4173 }
4174
4175 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4176 {
4177         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4178 }
4179
4180 static int atmel_lock_mac(struct atmel_private *priv)
4181 {
4182         int i, j = 20;
4183  retry:
4184         for (i = 5000; i; i--) {
4185                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4186                         break;
4187                 udelay(20);
4188         }
4189
4190         if (!i)
4191                 return 0; /* timed out */
4192
4193         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4194         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4195                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4196                 if (!j--)
4197                         return 0; /* timed out */
4198                 goto retry;
4199         }
4200
4201         return 1;
4202 }
4203
4204 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4205 {
4206         atmel_writeAR(priv->dev, pos);
4207         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4208         atmel_write16(priv->dev, DR, data >> 16);
4209 }
4210
4211 /***************************************************************************/
4212 /* There follows the source form of the MAC address reading firmware       */
4213 /***************************************************************************/
4214 #if 0
4215
4216 /* Copyright 2003 Matthew T. Russotto                                      */
4217 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4218 /* included in "atmel wireless lan drivers" package                        */
4219 /**
4220     This file is part of net.russotto.AtmelMACFW, hereto referred to
4221     as AtmelMACFW
4222
4223     AtmelMACFW is free software; you can redistribute it and/or modify
4224     it under the terms of the GNU General Public License version 2
4225     as published by the Free Software Foundation.
4226
4227     AtmelMACFW is distributed in the hope that it will be useful,
4228     but WITHOUT ANY WARRANTY; without even the implied warranty of
4229     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4230     GNU General Public License for more details.
4231
4232     You should have received a copy of the GNU General Public License
4233     along with AtmelMACFW; if not, write to the Free Software
4234     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4235
4236 ****************************************************************************/
4237 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4238 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4239 /* It only works on SPI EEPROM versions of the card.                       */
4240
4241 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4242 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4243 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4244 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4245 /* MR4, for investigational purposes (maybe we can determine chip type     */
4246 /* from that?)                                                             */
4247
4248         .org 0
4249     .set MRBASE, 0x8000000
4250         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4251         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4252         .set SRAM_BASE,  0x02000000
4253         .set SP_BASE,    0x0F300000
4254         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4255         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4256         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4257         .set STACK_BASE, 0x5600
4258         .set SP_SR, 0x10
4259         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4260         .set SP_RDRF, 1 /* status register bit -- RDR full */
4261         .set SP_SWRST, 0x80
4262         .set SP_SPIEN, 0x1
4263         .set SP_CR, 0   /* control register */
4264         .set SP_MR, 4   /* mode register */
4265         .set SP_RDR, 0x08 /* Read Data Register */
4266         .set SP_TDR, 0x0C /* Transmit Data Register */
4267         .set SP_CSR0, 0x30 /* chip select registers */
4268         .set SP_CSR1, 0x34
4269         .set SP_CSR2, 0x38
4270         .set SP_CSR3, 0x3C
4271         .set NVRAM_CMD_RDSR, 5 /* read status register */
4272         .set NVRAM_CMD_READ, 3 /* read data */
4273         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4274         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4275                                   serial output, since SO is normally high.  But it
4276                                   does cause 8 clock cycles and thus 8 bits to be
4277                                   clocked in to the chip.  See Atmel's SPI
4278                                   controller (e.g. AT91M55800) timing and 4K
4279                                   SPI EEPROM manuals */
4280
4281         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4282         .set NVRAM_IMAGE, 0x02000200
4283         .set NVRAM_LENGTH, 0x0200
4284         .set MAC_ADDRESS_MIB, SRAM_BASE
4285         .set MAC_ADDRESS_LENGTH, 6
4286         .set MAC_BOOT_FLAG, 0x10
4287         .set MR1, 0
4288         .set MR2, 4
4289         .set MR3, 8
4290         .set MR4, 0xC
4291 RESET_VECTOR:
4292         b RESET_HANDLER
4293 UNDEF_VECTOR:
4294         b HALT1
4295 SWI_VECTOR:
4296         b HALT1
4297 IABORT_VECTOR:
4298         b HALT1
4299 DABORT_VECTOR:
4300 RESERVED_VECTOR:
4301         b HALT1
4302 IRQ_VECTOR:
4303         b HALT1
4304 FIQ_VECTOR:
4305         b HALT1
4306 HALT1:  b HALT1
4307 RESET_HANDLER:
4308         mov     r0, #CPSR_INITIAL
4309         msr     CPSR_c, r0      /* This is probably unnecessary */
4310
4311 /* I'm guessing this is initializing clock generator electronics for SPI */
4312         ldr     r0, =SPI_CGEN_BASE
4313         mov     r1, #0
4314         mov     r1, r1, lsl #3
4315         orr     r1,r1, #0
4316         str     r1, [r0]
4317         ldr     r1, [r0, #28]
4318         bic     r1, r1, #16
4319         str     r1, [r0, #28]
4320         mov     r1, #1
4321         str     r1, [r0, #8]
4322
4323         ldr     r0, =MRBASE
4324         mov     r1, #0
4325         strh    r1, [r0, #MR1]
4326         strh    r1, [r0, #MR2]
4327         strh    r1, [r0, #MR3]
4328         strh    r1, [r0, #MR4]
4329
4330         mov     sp, #STACK_BASE
4331         bl      SP_INIT
4332         mov     r0, #10
4333         bl      DELAY9
4334         bl      GET_MAC_ADDR
4335         bl      GET_WHOLE_NVRAM
4336         ldr     r0, =MRBASE
4337         ldr     r1, =MAC_ADDRESS_MIB
4338         strh    r1, [r0, #MR2]
4339         ldr     r1, =NVRAM_IMAGE
4340         strh    r1, [r0, #MR4]
4341         mov     r1, #MAC_BOOT_FLAG
4342         strh    r1, [r0, #MR3]
4343 HALT2:  b HALT2
4344 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4345 GET_WHOLE_NVRAM:
4346         stmdb   sp!, {lr}
4347         mov     r2, #0 /* 0th bytes of NVRAM */
4348         mov     r3, #NVRAM_LENGTH
4349         mov     r1, #0          /* not used in routine */
4350         ldr     r0, =NVRAM_IMAGE
4351         bl      NVRAM_XFER
4352         ldmia   sp!, {lr}
4353         bx      lr
4354 .endfunc
4355
4356 .func Get_MAC_Addr, GET_MAC_ADDR
4357 GET_MAC_ADDR:
4358         stmdb   sp!, {lr}
4359         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4360         mov     r3, #MAC_ADDRESS_LENGTH
4361         mov     r1, #0          /* not used in routine */
4362         ldr     r0, =MAC_ADDRESS_MIB
4363         bl      NVRAM_XFER
4364         ldmia   sp!, {lr}
4365         bx      lr
4366 .endfunc
4367 .ltorg
4368 .func Delay9, DELAY9
4369 DELAY9:
4370         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4371 DELAYLOOP:
4372         beq     DELAY9_done
4373         subs    r0, r0, #1
4374         b       DELAYLOOP
4375 DELAY9_done:
4376         bx      lr
4377 .endfunc
4378
4379 .func SP_Init, SP_INIT
4380 SP_INIT:
4381         mov     r1, #SP_SWRST
4382         ldr     r0, =SP_BASE
4383         str     r1, [r0, #SP_CR] /* reset the SPI */
4384         mov     r1, #0
4385         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4386         mov     r1, #SP_SPIEN
4387         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4388         str     r1, [r0, #SP_CR] /* enable the SPI */
4389
4390 /*  My guess would be this turns on the SPI clock */
4391         ldr     r3, =SPI_CGEN_BASE
4392         ldr     r1, [r3, #28]
4393         orr     r1, r1, #0x2000
4394         str     r1, [r3, #28]
4395
4396         ldr     r1, =0x2000c01
4397         str     r1, [r0, #SP_CSR0]
4398         ldr     r1, =0x2000201
4399         str     r1, [r0, #SP_CSR1]
4400         str     r1, [r0, #SP_CSR2]
4401         str     r1, [r0, #SP_CSR3]
4402         ldr     r1, [r0, #SP_SR]
4403         ldr     r0, [r0, #SP_RDR]
4404         bx      lr
4405 .endfunc
4406 .func NVRAM_Init, NVRAM_INIT
4407 NVRAM_INIT:
4408         ldr     r1, =SP_BASE
4409         ldr     r0, [r1, #SP_RDR]
4410         mov     r0, #NVRAM_CMD_RDSR
4411         str     r0, [r1, #SP_TDR]
4412 SP_loop1:
4413         ldr     r0, [r1, #SP_SR]
4414         tst     r0, #SP_TDRE
4415         beq     SP_loop1
4416
4417         mov     r0, #SPI_8CLOCKS
4418         str     r0, [r1, #SP_TDR]
4419 SP_loop2:
4420         ldr     r0, [r1, #SP_SR]
4421         tst     r0, #SP_TDRE
4422         beq     SP_loop2
4423
4424         ldr     r0, [r1, #SP_RDR]
4425 SP_loop3:
4426         ldr     r0, [r1, #SP_SR]
4427         tst     r0, #SP_RDRF
4428         beq     SP_loop3
4429
4430         ldr     r0, [r1, #SP_RDR]
4431         and     r0, r0, #255
4432         bx      lr
4433 .endfunc
4434
4435 .func NVRAM_Xfer, NVRAM_XFER
4436         /* r0 = dest address */
4437         /* r1 = not used */
4438         /* r2 = src address within NVRAM */
4439         /* r3 = length */
4440 NVRAM_XFER:
4441         stmdb   sp!, {r4, r5, lr}
4442         mov     r5, r0          /* save r0 (dest address) */
4443         mov     r4, r3          /* save r3 (length) */
4444         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4445         and     r0, r0, #8
4446         add     r0, r0, #NVRAM_CMD_READ
4447         ldr     r1, =NVRAM_SCRATCH
4448         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4449         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4450 _local1:
4451         bl      NVRAM_INIT
4452         tst     r0, #NVRAM_SR_RDY
4453         bne     _local1
4454         mov     r0, #20
4455         bl      DELAY9
4456         mov     r2, r4          /* length */
4457         mov     r1, r5          /* dest address */
4458         mov     r0, #2          /* bytes to transfer in command */
4459         bl      NVRAM_XFER2
4460         ldmia   sp!, {r4, r5, lr}
4461         bx      lr
4462 .endfunc
4463
4464 .func NVRAM_Xfer2, NVRAM_XFER2
4465 NVRAM_XFER2:
4466         stmdb   sp!, {r4, r5, r6, lr}
4467         ldr     r4, =SP_BASE
4468         mov     r3, #0
4469         cmp     r0, #0
4470         bls     _local2
4471         ldr     r5, =NVRAM_SCRATCH
4472 _local4:
4473         ldrb    r6, [r5, r3]
4474         str     r6, [r4, #SP_TDR]
4475 _local3:
4476         ldr     r6, [r4, #SP_SR]
4477         tst     r6, #SP_TDRE
4478         beq     _local3
4479         add     r3, r3, #1
4480         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4481         blo     _local4
4482 _local2:
4483         mov     r3, #SPI_8CLOCKS
4484         str     r3, [r4, #SP_TDR]
4485         ldr     r0, [r4, #SP_RDR]
4486 _local5:
4487         ldr     r0, [r4, #SP_SR]
4488         tst     r0, #SP_RDRF
4489         beq     _local5
4490         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 */
4491         mov     r0, #0
4492         cmp     r2, #0  /* r2 is # of bytes to copy in */
4493         bls     _local6
4494 _local7:
4495         ldr     r5, [r4, #SP_SR]
4496         tst     r5, #SP_TDRE
4497         beq     _local7
4498         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4499 _local8:
4500         ldr     r5, [r4, #SP_SR]
4501         tst     r5, #SP_RDRF
4502         beq     _local8
4503         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4504         strb    r5, [r1], #1 /* postindexed */
4505         add     r0, r0, #1
4506         cmp     r0, r2
4507         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4508 _local6:
4509         mov     r0, #200
4510         bl      DELAY9
4511         ldmia   sp!, {r4, r5, r6, lr}
4512         bx      lr
4513 #endif