LXR linux/drivers/net/wireless/atmel.c

   1/*** -*- linux-c -*- **********************************************************
   2
   3     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5        Copyright 2000-2001 ATMEL Corporation.
   6        Copyright 2003-2004 Simon Kelley.
   7
   8    This code was developed from version 2.1.1 of the Atmel drivers,
   9    released by Atmel corp. under the GPL in December 2002. It also
  10    includes code from the Linux aironet drivers (C) Benjamin Reed,
  11    and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12    extensions, (C) Jean Tourrilhes.
  13
  14    The firmware module for reading the MAC address of the card comes from
  15    net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16    by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17    This file contains the module in binary form and, under the terms
  18    of the GPL, in source form. The source is located at the end of the file.
  19
  20    This program is free software; you can redistribute it and/or modify
  21    it under the terms of the GNU General Public License as published by
  22    the Free Software Foundation; either version 2 of the License, or
  23    (at your option) any later version.
  24
  25    This software is distributed in the hope that it will be useful,
  26    but WITHOUT ANY WARRANTY; without even the implied warranty of
  27    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28    GNU General Public License for more details.
  29
  30    You should have received a copy of the GNU General Public License
  31    along with Atmel wireless lan drivers; if not, write to the Free Software
  32    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  33
  34    For all queries about this code, please contact the current author,
  35    Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  36
  37    Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
  38    hardware used during development of this driver.
  39
  40******************************************************************************/
  41
  42#include <linux/init.h>
  43#include <linux/interrupt.h>
  44
  45#include <linux/kernel.h>
  46#include <linux/ptrace.h>
  47#include <linux/slab.h>
  48#include <linux/string.h>
  49#include <linux/ctype.h>
  50#include <linux/timer.h>
  51#include <asm/byteorder.h>
  52#include <asm/io.h>
  53#include <asm/uaccess.h>
  54#include <linux/module.h>
  55#include <linux/netdevice.h>
  56#include <linux/etherdevice.h>
  57#include <linux/skbuff.h>
  58#include <linux/if_arp.h>
  59#include <linux/ioport.h>
  60#include <linux/fcntl.h>
  61#include <linux/delay.h>
  62#include <linux/wireless.h>
  63#include <net/iw_handler.h>
  64#include <linux/crc32.h>
  65#include <linux/proc_fs.h>
  66#include <linux/device.h>
  67#include <linux/moduleparam.h>
  68#include <linux/firmware.h>
  69#include <linux/jiffies.h>
  70#include <linux/ieee80211.h>
  71#include "atmel.h"
  72
  73#define DRIVER_MAJOR 0
  74#define DRIVER_MINOR 98
  75
  76MODULE_AUTHOR("Simon Kelley");
  77MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  78MODULE_LICENSE("GPL");
  79MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  80
  81/* The name of the firmware file to be loaded
  82   over-rides any automatic selection */
  83static char *firmware = NULL;
  84module_param(firmware, charp, 0);
  85
  86/* table of firmware file names */
  87static 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};
 102MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
 103MODULE_FIRMWARE("atmel_at76c502.bin");
 104MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
 105MODULE_FIRMWARE("atmel_at76c502d.bin");
 106MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
 107MODULE_FIRMWARE("atmel_at76c502e.bin");
 108MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
 109MODULE_FIRMWARE("atmel_at76c502_3com.bin");
 110MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
 111MODULE_FIRMWARE("atmel_at76c504.bin");
 112MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
 113MODULE_FIRMWARE("atmel_at76c504_2958.bin");
 114MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
 115MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
 116MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
 117MODULE_FIRMWARE("atmel_at76c506.bin");
 118
 119#define MAX_SSID_LENGTH 32
 120#define MGMT_JIFFIES (256 * HZ / 100)
 121
 122#define MAX_BSS_ENTRIES 64
 123
 124/* registers */
 125#define GCR  0x00    /* (SIR0)  General Configuration Register */
 126#define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
 127#define AR   0x04
 128#define DR   0x08
 129#define MR1  0x12    /* Mirror Register 1 */
 130#define MR2  0x14    /* Mirror Register 2 */
 131#define MR3  0x16    /* Mirror Register 3 */
 132#define MR4  0x18    /* Mirror Register 4 */
 133
 134#define GPR1                            0x0c
 135#define GPR2                            0x0e
 136#define GPR3                            0x10
 137/*
 138 * Constants for the GCR register.
 139 */
 140#define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
 141#define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
 142#define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
 143#define GCR_ENINT     0x0002          /* Enable Interrupts */
 144#define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */
 145
 146#define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
 147#define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
 148/*
 149 *Constants for the MR registers.
 150 */
 151#define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
 152#define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
 153#define MAC_INIT_OK             0x0002        /* MAC boot has been completed */
 154
 155#define MIB_MAX_DATA_BYTES    212
 156#define MIB_HEADER_SIZE       4    /* first four fields */
 157
 158struct get_set_mib {
 159        u8 type;
 160        u8 size;
 161        u8 index;
 162        u8 reserved;
 163        u8 data[MIB_MAX_DATA_BYTES];
 164};
 165
 166struct rx_desc {
 167        u32          Next;
 168        u16          MsduPos;
 169        u16          MsduSize;
 170
 171        u8           State;
 172        u8           Status;
 173        u8           Rate;
 174        u8           Rssi;
 175        u8           LinkQuality;
 176        u8           PreambleType;
 177        u16          Duration;
 178        u32          RxTime;
 179};
 180
 181#define RX_DESC_FLAG_VALID       0x80
 182#define RX_DESC_FLAG_CONSUMED    0x40
 183#define RX_DESC_FLAG_IDLE        0x00
 184
 185#define RX_STATUS_SUCCESS        0x00
 186
 187#define RX_DESC_MSDU_POS_OFFSET      4
 188#define RX_DESC_MSDU_SIZE_OFFSET     6
 189#define RX_DESC_FLAGS_OFFSET         8
 190#define RX_DESC_STATUS_OFFSET        9
 191#define RX_DESC_RSSI_OFFSET          11
 192#define RX_DESC_LINK_QUALITY_OFFSET  12
 193#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 194#define RX_DESC_DURATION_OFFSET      14
 195#define RX_DESC_RX_TIME_OFFSET       16
 196
 197struct tx_desc {
 198        u32       NextDescriptor;
 199        u16       TxStartOfFrame;
 200        u16       TxLength;
 201
 202        u8        TxState;
 203        u8        TxStatus;
 204        u8        RetryCount;
 205
 206        u8        TxRate;
 207
 208        u8        KeyIndex;
 209        u8        ChiperType;
 210        u8        ChipreLength;
 211        u8        Reserved1;
 212
 213        u8        Reserved;
 214        u8        PacketType;
 215        u16       HostTxLength;
 216};
 217
 218#define TX_DESC_NEXT_OFFSET          0
 219#define TX_DESC_POS_OFFSET           4
 220#define TX_DESC_SIZE_OFFSET          6
 221#define TX_DESC_FLAGS_OFFSET         8
 222#define TX_DESC_STATUS_OFFSET        9
 223#define TX_DESC_RETRY_OFFSET         10
 224#define TX_DESC_RATE_OFFSET          11
 225#define TX_DESC_KEY_INDEX_OFFSET     12
 226#define TX_DESC_CIPHER_TYPE_OFFSET   13
 227#define TX_DESC_CIPHER_LENGTH_OFFSET 14
 228#define TX_DESC_PACKET_TYPE_OFFSET   17
 229#define TX_DESC_HOST_LENGTH_OFFSET   18
 230
 231/*
 232 * Host-MAC interface
 233 */
 234
 235#define TX_STATUS_SUCCESS       0x00
 236
 237#define TX_FIRM_OWN             0x80
 238#define TX_DONE                 0x40
 239
 240#define TX_ERROR                0x01
 241
 242#define TX_PACKET_TYPE_DATA     0x01
 243#define TX_PACKET_TYPE_MGMT     0x02
 244
 245#define ISR_EMPTY               0x00        /* no bits set in ISR */
 246#define ISR_TxCOMPLETE          0x01        /* packet transmitted */
 247#define ISR_RxCOMPLETE          0x02        /* packet received */
 248#define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
 249#define ISR_FATAL_ERROR         0x08        /* Fatal error */
 250#define ISR_COMMAND_COMPLETE    0x10        /* command completed */
 251#define ISR_OUT_OF_RANGE        0x20        /* command completed */
 252#define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
 253#define ISR_GENERIC_IRQ         0x80
 254
 255#define Local_Mib_Type          0x01
 256#define Mac_Address_Mib_Type    0x02
 257#define Mac_Mib_Type            0x03
 258#define Statistics_Mib_Type     0x04
 259#define Mac_Mgmt_Mib_Type       0x05
 260#define Mac_Wep_Mib_Type        0x06
 261#define Phy_Mib_Type            0x07
 262#define Multi_Domain_MIB        0x08
 263
 264#define MAC_MGMT_MIB_CUR_BSSID_POS            14
 265#define MAC_MIB_FRAG_THRESHOLD_POS            8
 266#define MAC_MIB_RTS_THRESHOLD_POS             10
 267#define MAC_MIB_SHORT_RETRY_POS               16
 268#define MAC_MIB_LONG_RETRY_POS                17
 269#define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 270#define MAC_MGMT_MIB_BEACON_PER_POS           0
 271#define MAC_MGMT_MIB_STATION_ID_POS           6
 272#define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 273#define MAC_MGMT_MIB_CUR_BSSID_POS            14
 274#define MAC_MGMT_MIB_PS_MODE_POS              53
 275#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 276#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 277#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 278#define PHY_MIB_CHANNEL_POS                   14
 279#define PHY_MIB_RATE_SET_POS                  20
 280#define PHY_MIB_REG_DOMAIN_POS                26
 281#define LOCAL_MIB_AUTO_TX_RATE_POS            3
 282#define LOCAL_MIB_SSID_SIZE                   5
 283#define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 284#define LOCAL_MIB_TX_MGMT_RATE_POS            7
 285#define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 286#define LOCAL_MIB_PREAMBLE_TYPE               9
 287#define MAC_ADDR_MIB_MAC_ADDR_POS             0
 288
 289#define         CMD_Set_MIB_Vars              0x01
 290#define         CMD_Get_MIB_Vars              0x02
 291#define         CMD_Scan                      0x03
 292#define         CMD_Join                      0x04
 293#define         CMD_Start                     0x05
 294#define         CMD_EnableRadio               0x06
 295#define         CMD_DisableRadio              0x07
 296#define         CMD_SiteSurvey                0x0B
 297
 298#define         CMD_STATUS_IDLE                   0x00
 299#define         CMD_STATUS_COMPLETE               0x01
 300#define         CMD_STATUS_UNKNOWN                0x02
 301#define         CMD_STATUS_INVALID_PARAMETER      0x03
 302#define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 303#define         CMD_STATUS_TIME_OUT               0x07
 304#define         CMD_STATUS_IN_PROGRESS            0x08
 305#define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 306#define         CMD_STATUS_HOST_ERROR             0xFF
 307#define         CMD_STATUS_BUSY                   0xFE
 308
 309#define CMD_BLOCK_COMMAND_OFFSET        0
 310#define CMD_BLOCK_STATUS_OFFSET         1
 311#define CMD_BLOCK_PARAMETERS_OFFSET     4
 312
 313#define SCAN_OPTIONS_SITE_SURVEY        0x80
 314
 315#define MGMT_FRAME_BODY_OFFSET          24
 316#define MAX_AUTHENTICATION_RETRIES      3
 317#define MAX_ASSOCIATION_RETRIES         3
 318
 319#define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 320
 321#define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 322#define LOOP_RETRY_LIMIT   500000
 323
 324#define ACTIVE_MODE     1
 325#define PS_MODE         2
 326
 327#define MAX_ENCRYPTION_KEYS 4
 328#define MAX_ENCRYPTION_KEY_SIZE 40
 329
 330/*
 331 * 802.11 related definitions
 332 */
 333
 334/*
 335 * Regulatory Domains
 336 */
 337
 338#define REG_DOMAIN_FCC          0x10    /* Channels     1-11    USA                             */
 339#define REG_DOMAIN_DOC          0x20    /* Channel      1-11    Canada                          */
 340#define REG_DOMAIN_ETSI         0x30    /* Channel      1-13    Europe (ex Spain/France)        */
 341#define REG_DOMAIN_SPAIN        0x31    /* Channel      10-11   Spain                           */
 342#define REG_DOMAIN_FRANCE       0x32    /* Channel      10-13   France                          */
 343#define REG_DOMAIN_MKK          0x40    /* Channel      14      Japan                           */
 344#define REG_DOMAIN_MKK1         0x41    /* Channel      1-14    Japan(MKK1)                     */
 345#define REG_DOMAIN_ISRAEL       0x50    /* Channel      3-9     ISRAEL                          */
 346
 347#define BSS_TYPE_AD_HOC         1
 348#define BSS_TYPE_INFRASTRUCTURE 2
 349
 350#define SCAN_TYPE_ACTIVE        0
 351#define SCAN_TYPE_PASSIVE       1
 352
 353#define LONG_PREAMBLE           0
 354#define SHORT_PREAMBLE          1
 355#define AUTO_PREAMBLE           2
 356
 357#define DATA_FRAME_WS_HEADER_SIZE   30
 358
 359/* promiscuous mode control */
 360#define PROM_MODE_OFF                   0x0
 361#define PROM_MODE_UNKNOWN               0x1
 362#define PROM_MODE_CRC_FAILED            0x2
 363#define PROM_MODE_DUPLICATED            0x4
 364#define PROM_MODE_MGMT                  0x8
 365#define PROM_MODE_CTRL                  0x10
 366#define PROM_MODE_BAD_PROTOCOL          0x20
 367
 368#define IFACE_INT_STATUS_OFFSET         0
 369#define IFACE_INT_MASK_OFFSET           1
 370#define IFACE_LOCKOUT_HOST_OFFSET       2
 371#define IFACE_LOCKOUT_MAC_OFFSET        3
 372#define IFACE_FUNC_CTRL_OFFSET          28
 373#define IFACE_MAC_STAT_OFFSET           30
 374#define IFACE_GENERIC_INT_TYPE_OFFSET   32
 375
 376#define CIPHER_SUITE_NONE     0
 377#define CIPHER_SUITE_WEP_64   1
 378#define CIPHER_SUITE_TKIP     2
 379#define CIPHER_SUITE_AES      3
 380#define CIPHER_SUITE_CCX      4
 381#define CIPHER_SUITE_WEP_128  5
 382
 383/*
 384 * IFACE MACROS & definitions
 385 */
 386
 387/*
 388 * FuncCtrl field:
 389 */
 390#define FUNC_CTRL_TxENABLE              0x10
 391#define FUNC_CTRL_RxENABLE              0x20
 392#define FUNC_CTRL_INIT_COMPLETE         0x01
 393
 394/* A stub firmware image which reads the MAC address from NVRAM on the card.
 395   For copyright information and source see the end of this file. */
 396static u8 mac_reader[] = {
 397        0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
 398        0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
 399        0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 400        0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
 401        0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
 402        0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
 403        0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
 404        0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
 405        0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
 406        0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
 407        0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 408        0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 409        0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 410        0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 411        0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
 412        0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
 413        0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
 414        0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
 415        0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
 416        0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
 417        0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
 418        0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
 419        0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
 420        0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 421        0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 422        0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
 423        0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
 424        0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
 425        0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
 426        0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
 427        0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
 428        0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
 429        0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
 430        0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
 431        0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
 432        0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
 433        0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
 434        0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
 435        0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
 436        0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
 437        0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
 438        0x00, 0x01, 0x00, 0x02
 439};
 440
 441struct atmel_private {
 442        void *card; /* Bus dependent structure varies for PCcard */
 443        int (*present_callback)(void *); /* And callback which uses it */
 444        char firmware_id[32];
 445        AtmelFWType firmware_type;
 446        u8 *firmware;
 447        int firmware_length;
 448        struct timer_list management_timer;
 449        struct net_device *dev;
 450        struct device *sys_dev;
 451        struct iw_statistics wstats;
 452        spinlock_t irqlock, timerlock;  /* spinlocks */
 453        enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 454        enum {
 455                CARD_TYPE_PARALLEL_FLASH,
 456                CARD_TYPE_SPI_FLASH,
 457                CARD_TYPE_EEPROM
 458        } card_type;
 459        int do_rx_crc; /* If we need to CRC incoming packets */
 460        int probe_crc; /* set if we don't yet know */
 461        int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 462        u16 rx_desc_head;
 463        u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 464        u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 465
 466        u16 frag_seq, frag_len, frag_no;
 467        u8 frag_source[6];
 468
 469        u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 470        u8 group_cipher_suite, pairwise_cipher_suite;
 471        u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 472        int wep_key_len[MAX_ENCRYPTION_KEYS];
 473        int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 474
 475        u16 host_info_base;
 476        struct host_info_struct {
 477                /* NB this is matched to the hardware, don't change. */
 478                u8 volatile int_status;
 479                u8 volatile int_mask;
 480                u8 volatile lockout_host;
 481                u8 volatile lockout_mac;
 482
 483                u16 tx_buff_pos;
 484                u16 tx_buff_size;
 485                u16 tx_desc_pos;
 486                u16 tx_desc_count;
 487
 488                u16 rx_buff_pos;
 489                u16 rx_buff_size;
 490                u16 rx_desc_pos;
 491                u16 rx_desc_count;
 492
 493                u16 build_version;
 494                u16 command_pos;
 495
 496                u16 major_version;
 497                u16 minor_version;
 498
 499                u16 func_ctrl;
 500                u16 mac_status;
 501                u16 generic_IRQ_type;
 502                u8  reserved[2];
 503        } host_info;
 504
 505        enum {
 506                STATION_STATE_SCANNING,
 507                STATION_STATE_JOINNING,
 508                STATION_STATE_AUTHENTICATING,
 509                STATION_STATE_ASSOCIATING,
 510                STATION_STATE_READY,
 511                STATION_STATE_REASSOCIATING,
 512                STATION_STATE_DOWN,
 513                STATION_STATE_MGMT_ERROR
 514        } station_state;
 515
 516        int operating_mode, power_mode;
 517        time_t last_qual;
 518        int beacons_this_sec;
 519        int channel;
 520        int reg_domain, config_reg_domain;
 521        int tx_rate;
 522        int auto_tx_rate;
 523        int rts_threshold;
 524        int frag_threshold;
 525        int long_retry, short_retry;
 526        int preamble;
 527        int default_beacon_period, beacon_period, listen_interval;
 528        int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 529        int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 530        enum {
 531                SITE_SURVEY_IDLE,
 532                SITE_SURVEY_IN_PROGRESS,
 533                SITE_SURVEY_COMPLETED
 534        } site_survey_state;
 535        unsigned long last_survey;
 536
 537        int station_was_associated, station_is_associated;
 538        int fast_scan;
 539
 540        struct bss_info {
 541                int channel;
 542                int SSIDsize;
 543                int RSSI;
 544                int UsingWEP;
 545                int preamble;
 546                int beacon_period;
 547                int BSStype;
 548                u8 BSSID[6];
 549                u8 SSID[MAX_SSID_LENGTH];
 550        } BSSinfo[MAX_BSS_ENTRIES];
 551        int BSS_list_entries, current_BSS;
 552        int connect_to_any_BSS;
 553        int SSID_size, new_SSID_size;
 554        u8 CurrentBSSID[6], BSSID[6];
 555        u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 556        u64 last_beacon_timestamp;
 557        u8 rx_buf[MAX_WIRELESS_BODY];
 558};
 559
 560static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 561
 562static const struct {
 563        int reg_domain;
 564        int min, max;
 565        char *name;
 566} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 567                      { REG_DOMAIN_DOC, 1, 11, "Canada" },
 568                      { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 569                      { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 570                      { REG_DOMAIN_FRANCE, 10, 13, "France" },
 571                      { REG_DOMAIN_MKK, 14, 14, "MKK" },
 572                      { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 573                      { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 574
 575static void build_wpa_mib(struct atmel_private *priv);
 576static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 577static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 578                               const unsigned char *src, u16 len);
 579static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 580                               u16 src, u16 len);
 581static void atmel_set_gcr(struct net_device *dev, u16 mask);
 582static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 583static int atmel_lock_mac(struct atmel_private *priv);
 584static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 585static void atmel_command_irq(struct atmel_private *priv);
 586static int atmel_validate_channel(struct atmel_private *priv, int channel);
 587static void atmel_management_frame(struct atmel_private *priv,
 588                                   struct ieee80211_hdr *header,
 589                                   u16 frame_len, u8 rssi);
 590static void atmel_management_timer(u_long a);
 591static void atmel_send_command(struct atmel_private *priv, int command,
 592                               void *cmd, int cmd_size);
 593static int atmel_send_command_wait(struct atmel_private *priv, int command,
 594                                   void *cmd, int cmd_size);
 595static void atmel_transmit_management_frame(struct atmel_private *priv,
 596                                            struct ieee80211_hdr *header,
 597                                            u8 *body, int body_len);
 598
 599static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 600static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 601                           u8 data);
 602static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 603                            u16 data);
 604static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 605                          u8 *data, int data_len);
 606static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 607                          u8 *data, int data_len);
 608static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 609static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 610static void atmel_smooth_qual(struct atmel_private *priv);
 611static void atmel_writeAR(struct net_device *dev, u16 data);
 612static int probe_atmel_card(struct net_device *dev);
 613static int reset_atmel_card(struct net_device *dev);
 614static void atmel_enter_state(struct atmel_private *priv, int new_state);
 615int atmel_open (struct net_device *dev);
 616
 617static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 618{
 619        return priv->host_info_base + offset;
 620}
 621
 622static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 623{
 624        return priv->host_info.command_pos + offset;
 625}
 626
 627static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 628{
 629        return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 630}
 631
 632static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 633{
 634        return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 635}
 636
 637static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 638{
 639        return inb(dev->base_addr + offset);
 640}
 641
 642static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 643{
 644        outb(data, dev->base_addr + offset);
 645}
 646
 647static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 648{
 649        return inw(dev->base_addr + offset);
 650}
 651
 652static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 653{
 654        outw(data, dev->base_addr + offset);
 655}
 656
 657static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 658{
 659        atmel_writeAR(priv->dev, pos);
 660        return atmel_read8(priv->dev, DR);
 661}
 662
 663static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 664{
 665        atmel_writeAR(priv->dev, pos);
 666        atmel_write8(priv->dev, DR, data);
 667}
 668
 669static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 670{
 671        atmel_writeAR(priv->dev, pos);
 672        return atmel_read16(priv->dev, DR);
 673}
 674
 675static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 676{
 677        atmel_writeAR(priv->dev, pos);
 678        atmel_write16(priv->dev, DR, data);
 679}
 680
 681static const struct iw_handler_def atmel_handler_def;
 682
 683static void tx_done_irq(struct atmel_private *priv)
 684{
 685        int i;
 686
 687        for (i = 0;
 688             atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 689                     i < priv->host_info.tx_desc_count;
 690             i++) {
 691                u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 692                u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 693                u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 694
 695                atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 696
 697                priv->tx_free_mem += msdu_size;
 698                priv->tx_desc_free++;
 699
 700                if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 701                        priv->tx_buff_head = 0;
 702                else
 703                        priv->tx_buff_head += msdu_size;
 704
 705                if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 706                        priv->tx_desc_head++ ;
 707                else
 708                        priv->tx_desc_head = 0;
 709
 710                if (type == TX_PACKET_TYPE_DATA) {
 711                        if (status == TX_STATUS_SUCCESS)
 712                                priv->dev->stats.tx_packets++;
 713                        else
 714                                priv->dev->stats.tx_errors++;
 715                        netif_wake_queue(priv->dev);
 716                }
 717        }
 718}
 719
 720static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 721{
 722        u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 723
 724        if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 725                return 0;
 726
 727        if (bottom_free >= len)
 728                return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 729
 730        if (priv->tx_free_mem - bottom_free >= len) {
 731                priv->tx_buff_tail = 0;
 732                return priv->host_info.tx_buff_pos;
 733        }
 734
 735        return 0;
 736}
 737
 738static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 739                                 u16 len, u16 buff, u8 type)
 740{
 741        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 742        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 743        if (!priv->use_wpa)
 744                atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 745        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 746        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 747        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 748        if (priv->use_wpa) {
 749                int cipher_type, cipher_length;
 750                if (is_bcast) {
 751                        cipher_type = priv->group_cipher_suite;
 752                        if (cipher_type == CIPHER_SUITE_WEP_64 ||
 753                            cipher_type == CIPHER_SUITE_WEP_128)
 754                                cipher_length = 8;
 755                        else if (cipher_type == CIPHER_SUITE_TKIP)
 756                                cipher_length = 12;
 757                        else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 758                                 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 759                                cipher_type = priv->pairwise_cipher_suite;
 760                                cipher_length = 8;
 761                        } else {
 762                                cipher_type = CIPHER_SUITE_NONE;
 763                                cipher_length = 0;
 764                        }
 765                } else {
 766                        cipher_type = priv->pairwise_cipher_suite;
 767                        if (cipher_type == CIPHER_SUITE_WEP_64 ||
 768                            cipher_type == CIPHER_SUITE_WEP_128)
 769                                cipher_length = 8;
 770                        else if (cipher_type == CIPHER_SUITE_TKIP)
 771                                cipher_length = 12;
 772                        else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 773                                 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 774                                cipher_type = priv->group_cipher_suite;
 775                                cipher_length = 8;
 776                        } else {
 777                                cipher_type = CIPHER_SUITE_NONE;
 778                                cipher_length = 0;
 779                        }
 780                }
 781
 782                atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 783                            cipher_type);
 784                atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 785                            cipher_length);
 786        }
 787        atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 788        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 789        if (priv->tx_desc_previous != priv->tx_desc_tail)
 790                atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 791        priv->tx_desc_previous = priv->tx_desc_tail;
 792        if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 793                priv->tx_desc_tail++;
 794        else
 795                priv->tx_desc_tail = 0;
 796        priv->tx_desc_free--;
 797        priv->tx_free_mem -= len;
 798}
 799
 800static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 801{
 802        static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 803        struct atmel_private *priv = netdev_priv(dev);
 804        struct ieee80211_hdr header;
 805        unsigned long flags;
 806        u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 807
 808        if (priv->card && priv->present_callback &&
 809            !(*priv->present_callback)(priv->card)) {
 810                dev->stats.tx_errors++;
 811                dev_kfree_skb(skb);
 812                return NETDEV_TX_OK;
 813        }
 814
 815        if (priv->station_state != STATION_STATE_READY) {
 816                dev->stats.tx_errors++;
 817                dev_kfree_skb(skb);
 818                return NETDEV_TX_OK;
 819        }
 820
 821        /* first ensure the timer func cannot run */
 822        spin_lock_bh(&priv->timerlock);
 823        /* then stop the hardware ISR */
 824        spin_lock_irqsave(&priv->irqlock, flags);
 825        /* nb doing the above in the opposite order will deadlock */
 826
 827        /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 828           12 first bytes (containing DA/SA) and put them in the appropriate
 829           fields of the Wireless Header. Thus the packet length is then the
 830           initial + 18 (+30-12) */
 831
 832        if (!(buff = find_tx_buff(priv, len + 18))) {
 833                dev->stats.tx_dropped++;
 834                spin_unlock_irqrestore(&priv->irqlock, flags);
 835                spin_unlock_bh(&priv->timerlock);
 836                netif_stop_queue(dev);
 837                return NETDEV_TX_BUSY;
 838        }
 839
 840        frame_ctl = IEEE80211_FTYPE_DATA;
 841        header.duration_id = 0;
 842        header.seq_ctrl = 0;
 843        if (priv->wep_is_on)
 844                frame_ctl |= IEEE80211_FCTL_PROTECTED;
 845        if (priv->operating_mode == IW_MODE_ADHOC) {
 846                skb_copy_from_linear_data(skb, &header.addr1, 6);
 847                memcpy(&header.addr2, dev->dev_addr, 6);
 848                memcpy(&header.addr3, priv->BSSID, 6);
 849        } else {
 850                frame_ctl |= IEEE80211_FCTL_TODS;
 851                memcpy(&header.addr1, priv->CurrentBSSID, 6);
 852                memcpy(&header.addr2, dev->dev_addr, 6);
 853                skb_copy_from_linear_data(skb, &header.addr3, 6);
 854        }
 855
 856        if (priv->use_wpa)
 857                memcpy(&header.addr4, SNAP_RFC1024, 6);
 858
 859        header.frame_control = cpu_to_le16(frame_ctl);
 860        /* Copy the wireless header into the card */
 861        atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 862        /* Copy the packet sans its 802.3 header addresses which have been replaced */
 863        atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 864        priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 865
 866        /* low bit of first byte of destination tells us if broadcast */
 867        tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 868        dev->stats.tx_bytes += len;
 869
 870        spin_unlock_irqrestore(&priv->irqlock, flags);
 871        spin_unlock_bh(&priv->timerlock);
 872        dev_kfree_skb(skb);
 873
 874        return NETDEV_TX_OK;
 875}
 876
 877static void atmel_transmit_management_frame(struct atmel_private *priv,
 878                                            struct ieee80211_hdr *header,
 879                                            u8 *body, int body_len)
 880{
 881        u16 buff;
 882        int len = MGMT_FRAME_BODY_OFFSET + body_len;
 883
 884        if (!(buff = find_tx_buff(priv, len)))
 885                return;
 886
 887        atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 888        atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 889        priv->tx_buff_tail += len;
 890        tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 891}
 892
 893static void fast_rx_path(struct atmel_private *priv,
 894                         struct ieee80211_hdr *header,
 895                         u16 msdu_size, u16 rx_packet_loc, u32 crc)
 896{
 897        /* fast path: unfragmented packet copy directly into skbuf */
 898        u8 mac4[6];
 899        struct sk_buff  *skb;
 900        unsigned char *skbp;
 901
 902        /* get the final, mac 4 header field, this tells us encapsulation */
 903        atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 904        msdu_size -= 6;
 905
 906        if (priv->do_rx_crc) {
 907                crc = crc32_le(crc, mac4, 6);
 908                msdu_size -= 4;
 909        }
 910
 911        if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 912                priv->dev->stats.rx_dropped++;
 913                return;
 914        }
 915
 916        skb_reserve(skb, 2);
 917        skbp = skb_put(skb, msdu_size + 12);
 918        atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 919
 920        if (priv->do_rx_crc) {
 921                u32 netcrc;
 922                crc = crc32_le(crc, skbp + 12, msdu_size);
 923                atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 924                if ((crc ^ 0xffffffff) != netcrc) {
 925                        priv->dev->stats.rx_crc_errors++;
 926                        dev_kfree_skb(skb);
 927                        return;
 928                }
 929        }
 930
 931        memcpy(skbp, header->addr1, 6); /* destination address */
 932        if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 933                memcpy(&skbp[6], header->addr3, 6);
 934        else
 935                memcpy(&skbp[6], header->addr2, 6); /* source address */
 936
 937        skb->protocol = eth_type_trans(skb, priv->dev);
 938        skb->ip_summed = CHECKSUM_NONE;
 939        netif_rx(skb);
 940        priv->dev->stats.rx_bytes += 12 + msdu_size;
 941        priv->dev->stats.rx_packets++;
 942}
 943
 944/* Test to see if the packet in card memory at packet_loc has a valid CRC
 945   It doesn't matter that this is slow: it is only used to proble the first few
 946   packets. */
 947static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 948{
 949        int i = msdu_size - 4;
 950        u32 netcrc, crc = 0xffffffff;
 951
 952        if (msdu_size < 4)
 953                return 0;
 954
 955        atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 956
 957        atmel_writeAR(priv->dev, packet_loc);
 958        while (i--) {
 959                u8 octet = atmel_read8(priv->dev, DR);
 960                crc = crc32_le(crc, &octet, 1);
 961        }
 962
 963        return (crc ^ 0xffffffff) == netcrc;
 964}
 965
 966static void frag_rx_path(struct atmel_private *priv,
 967                         struct ieee80211_hdr *header,
 968                         u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 969                         u8 frag_no, int more_frags)
 970{
 971        u8 mac4[6];
 972        u8 source[6];
 973        struct sk_buff *skb;
 974
 975        if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 976                memcpy(source, header->addr3, 6);
 977        else
 978                memcpy(source, header->addr2, 6);
 979
 980        rx_packet_loc += 24; /* skip header */
 981
 982        if (priv->do_rx_crc)
 983                msdu_size -= 4;
 984
 985        if (frag_no == 0) { /* first fragment */
 986                atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 987                msdu_size -= 6;
 988                rx_packet_loc += 6;
 989
 990                if (priv->do_rx_crc)
 991                        crc = crc32_le(crc, mac4, 6);
 992
 993                priv->frag_seq = seq_no;
 994                priv->frag_no = 1;
 995                priv->frag_len = msdu_size;
 996                memcpy(priv->frag_source, source, 6);
 997                memcpy(&priv->rx_buf[6], source, 6);
 998                memcpy(priv->rx_buf, header->addr1, 6);
 999
1000                atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);

1001
1002                if (priv->do_rx_crc) {
1003                        u32 netcrc;
1004                        crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1005                        atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1006                        if ((crc ^ 0xffffffff) != netcrc) {
1007                                priv->dev->stats.rx_crc_errors++;
1008                                memset(priv->frag_source, 0xff, 6);
1009                        }
1010                }
1011
1012        } else if (priv->frag_no == frag_no &&
1013                   priv->frag_seq == seq_no &&
1014                   memcmp(priv->frag_source, source, 6) == 0) {
1015
1016                atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1017                                   rx_packet_loc, msdu_size);
1018                if (priv->do_rx_crc) {
1019                        u32 netcrc;
1020                        crc = crc32_le(crc,
1021                                       &priv->rx_buf[12 + priv->frag_len],
1022                                       msdu_size);
1023                        atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1024                        if ((crc ^ 0xffffffff) != netcrc) {
1025                                priv->dev->stats.rx_crc_errors++;
1026                                memset(priv->frag_source, 0xff, 6);
1027                                more_frags = 1; /* don't send broken assembly */
1028                        }
1029                }
1030
1031                priv->frag_len += msdu_size;
1032                priv->frag_no++;
1033
1034                if (!more_frags) { /* last one */
1035                        memset(priv->frag_source, 0xff, 6);
1036                        if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1037                                priv->dev->stats.rx_dropped++;
1038                        } else {
1039                                skb_reserve(skb, 2);
1040                                memcpy(skb_put(skb, priv->frag_len + 12),
1041                                       priv->rx_buf,
1042                                       priv->frag_len + 12);
1043                                skb->protocol = eth_type_trans(skb, priv->dev);
1044                                skb->ip_summed = CHECKSUM_NONE;
1045                                netif_rx(skb);
1046                                priv->dev->stats.rx_bytes += priv->frag_len + 12;
1047                                priv->dev->stats.rx_packets++;
1048                        }
1049                }
1050        } else
1051                priv->wstats.discard.fragment++;
1052}
1053
1054static void rx_done_irq(struct atmel_private *priv)
1055{
1056        int i;
1057        struct ieee80211_hdr header;
1058
1059        for (i = 0;
1060             atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1061                     i < priv->host_info.rx_desc_count;
1062             i++) {
1063
1064                u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1065                u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1066                u32 crc = 0xffffffff;
1067
1068                if (status != RX_STATUS_SUCCESS) {
1069                        if (status == 0xc1) /* determined by experiment */
1070                                priv->wstats.discard.nwid++;
1071                        else
1072                                priv->dev->stats.rx_errors++;
1073                        goto next;
1074                }
1075
1076                msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1077                rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1078
1079                if (msdu_size < 30) {
1080                        priv->dev->stats.rx_errors++;
1081                        goto next;
1082                }
1083
1084                /* Get header as far as end of seq_ctrl */
1085                atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1086                frame_ctl = le16_to_cpu(header.frame_control);
1087                seq_control = le16_to_cpu(header.seq_ctrl);
1088
1089                /* probe for CRC use here if needed  once five packets have
1090                   arrived with the same crc status, we assume we know what's
1091                   happening and stop probing */
1092                if (priv->probe_crc) {
1093                        if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1094                                priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1095                        } else {
1096                                priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1097                        }
1098                        if (priv->do_rx_crc) {
1099                                if (priv->crc_ok_cnt++ > 5)
1100                                        priv->probe_crc = 0;
1101                        } else {
1102                                if (priv->crc_ko_cnt++ > 5)
1103                                        priv->probe_crc = 0;
1104                        }
1105                }
1106
1107                /* don't CRC header when WEP in use */
1108                if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1109                        crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1110                }
1111                msdu_size -= 24; /* header */
1112
1113                if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1114                        int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1115                        u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1116                        u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1117
1118                        if (!more_fragments && packet_fragment_no == 0) {
1119                                fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1120                        } else {
1121                                frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1122                                             packet_sequence_no, packet_fragment_no, more_fragments);
1123                        }
1124                }
1125
1126                if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1127                        /* copy rest of packet into buffer */
1128                        atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1129
1130                        /* we use the same buffer for frag reassembly and control packets */
1131                        memset(priv->frag_source, 0xff, 6);
1132
1133                        if (priv->do_rx_crc) {
1134                                /* last 4 octets is crc */
1135                                msdu_size -= 4;
1136                                crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1137                                if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1138                                        priv->dev->stats.rx_crc_errors++;
1139                                        goto next;
1140                                }
1141                        }
1142
1143                        atmel_management_frame(priv, &header, msdu_size,
1144                                               atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1145                }
1146
1147next:
1148                /* release descriptor */
1149                atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1150
1151                if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1152                        priv->rx_desc_head++;
1153                else
1154                        priv->rx_desc_head = 0;
1155        }
1156}
1157
1158static irqreturn_t service_interrupt(int irq, void *dev_id)
1159{
1160        struct net_device *dev = (struct net_device *) dev_id;
1161        struct atmel_private *priv = netdev_priv(dev);
1162        u8 isr;
1163        int i = -1;
1164        static const u8 irq_order[] = {
1165                ISR_OUT_OF_RANGE,
1166                ISR_RxCOMPLETE,
1167                ISR_TxCOMPLETE,
1168                ISR_RxFRAMELOST,
1169                ISR_FATAL_ERROR,
1170                ISR_COMMAND_COMPLETE,
1171                ISR_IBSS_MERGE,
1172                ISR_GENERIC_IRQ
1173        };
1174
1175        if (priv->card && priv->present_callback &&
1176            !(*priv->present_callback)(priv->card))
1177                return IRQ_HANDLED;
1178
1179        /* In this state upper-level code assumes it can mess with
1180           the card unhampered by interrupts which may change register state.
1181           Note that even though the card shouldn't generate interrupts
1182           the inturrupt line may be shared. This allows card setup
1183           to go on without disabling interrupts for a long time. */
1184        if (priv->station_state == STATION_STATE_DOWN)
1185                return IRQ_NONE;
1186
1187        atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1188
1189        while (1) {
1190                if (!atmel_lock_mac(priv)) {
1191                        /* failed to contact card */
1192                        printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1193                        return IRQ_HANDLED;
1194                }
1195
1196                isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1197                atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1198
1199                if (!isr) {
1200                        atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1201                        return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1202                }
1203
1204                atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1205
1206                for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1207                        if (isr & irq_order[i])
1208                                break;
1209
1210                if (!atmel_lock_mac(priv)) {
1211                        /* failed to contact card */
1212                        printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1213                        return IRQ_HANDLED;
1214                }
1215
1216                isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1217                isr ^= irq_order[i];
1218                atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1219                atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1220
1221                switch (irq_order[i]) {
1222
1223                case ISR_OUT_OF_RANGE:
1224                        if (priv->operating_mode == IW_MODE_INFRA &&
1225                            priv->station_state == STATION_STATE_READY) {
1226                                priv->station_is_associated = 0;
1227                                atmel_scan(priv, 1);
1228                        }
1229                        break;
1230
1231                case ISR_RxFRAMELOST:
1232                        priv->wstats.discard.misc++;
1233                        /* fall through */
1234                case ISR_RxCOMPLETE:
1235                        rx_done_irq(priv);
1236                        break;
1237
1238                case ISR_TxCOMPLETE:
1239                        tx_done_irq(priv);
1240                        break;
1241
1242                case ISR_FATAL_ERROR:
1243                        printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1244                        atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1245                        break;
1246
1247                case ISR_COMMAND_COMPLETE:
1248                        atmel_command_irq(priv);
1249                        break;
1250
1251                case ISR_IBSS_MERGE:
1252                        atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1253                                      priv->CurrentBSSID, 6);
1254                        /* The WPA stuff cares about the current AP address */
1255                        if (priv->use_wpa)
1256                                build_wpa_mib(priv);
1257                        break;
1258                case ISR_GENERIC_IRQ:
1259                        printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1260                        break;
1261                }
1262        }
1263}
1264
1265static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1266{
1267        struct atmel_private *priv = netdev_priv(dev);
1268
1269        /* update the link quality here in case we are seeing no beacons
1270           at all to drive the process */
1271        atmel_smooth_qual(priv);
1272
1273        priv->wstats.status = priv->station_state;
1274
1275        if (priv->operating_mode == IW_MODE_INFRA) {
1276                if (priv->station_state != STATION_STATE_READY) {
1277                        priv->wstats.qual.qual = 0;
1278                        priv->wstats.qual.level = 0;
1279                        priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1280                                        | IW_QUAL_LEVEL_INVALID);
1281                }
1282                priv->wstats.qual.noise = 0;
1283                priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1284        } else {
1285                /* Quality levels cannot be determined in ad-hoc mode,
1286                   because we can 'hear' more that one remote station. */
1287                priv->wstats.qual.qual = 0;
1288                priv->wstats.qual.level = 0;
1289                priv->wstats.qual.noise = 0;
1290                priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1291                                        | IW_QUAL_LEVEL_INVALID
1292                                        | IW_QUAL_NOISE_INVALID;
1293                priv->wstats.miss.beacon = 0;
1294        }
1295
1296        return &priv->wstats;
1297}
1298
1299static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1300{
1301        if ((new_mtu < 68) || (new_mtu > 2312))
1302                return -EINVAL;
1303        dev->mtu = new_mtu;
1304        return 0;
1305}
1306
1307static int atmel_set_mac_address(struct net_device *dev, void *p)
1308{
1309        struct sockaddr *addr = p;
1310
1311        memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1312        return atmel_open(dev);
1313}
1314
1315EXPORT_SYMBOL(atmel_open);
1316
1317int atmel_open(struct net_device *dev)
1318{
1319        struct atmel_private *priv = netdev_priv(dev);
1320        int i, channel, err;
1321
1322        /* any scheduled timer is no longer needed and might screw things up.. */
1323        del_timer_sync(&priv->management_timer);
1324
1325        /* Interrupts will not touch the card once in this state... */
1326        priv->station_state = STATION_STATE_DOWN;
1327
1328        if (priv->new_SSID_size) {
1329                memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1330                priv->SSID_size = priv->new_SSID_size;
1331                priv->new_SSID_size = 0;
1332        }
1333        priv->BSS_list_entries = 0;
1334
1335        priv->AuthenticationRequestRetryCnt = 0;
1336        priv->AssociationRequestRetryCnt = 0;
1337        priv->ReAssociationRequestRetryCnt = 0;
1338        priv->CurrentAuthentTransactionSeqNum = 0x0001;
1339        priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1340
1341        priv->site_survey_state = SITE_SURVEY_IDLE;
1342        priv->station_is_associated = 0;
1343
1344        err = reset_atmel_card(dev);
1345        if (err)
1346                return err;
1347
1348        if (priv->config_reg_domain) {
1349                priv->reg_domain = priv->config_reg_domain;
1350                atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1351        } else {
1352                priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1353                for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1354                        if (priv->reg_domain == channel_table[i].reg_domain)
1355                                break;
1356                if (i == ARRAY_SIZE(channel_table)) {
1357                        priv->reg_domain = REG_DOMAIN_MKK1;
1358                        printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1359                }
1360        }
1361
1362        if ((channel = atmel_validate_channel(priv, priv->channel)))
1363                priv->channel = channel;
1364
1365        /* this moves station_state on.... */
1366        atmel_scan(priv, 1);
1367
1368        atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1369        return 0;
1370}
1371
1372static int atmel_close(struct net_device *dev)
1373{
1374        struct atmel_private *priv = netdev_priv(dev);
1375
1376        /* Send event to userspace that we are disassociating */
1377        if (priv->station_state == STATION_STATE_READY) {
1378                union iwreq_data wrqu;
1379
1380                wrqu.data.length = 0;
1381                wrqu.data.flags = 0;
1382                wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1383                memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1384                wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1385        }
1386
1387        atmel_enter_state(priv, STATION_STATE_DOWN);
1388
1389        if (priv->bus_type == BUS_TYPE_PCCARD)
1390                atmel_write16(dev, GCR, 0x0060);
1391        atmel_write16(dev, GCR, 0x0040);
1392        return 0;
1393}
1394
1395static int atmel_validate_channel(struct atmel_private *priv, int channel)
1396{
1397        /* check that channel is OK, if so return zero,
1398           else return suitable default channel */
1399        int i;
1400
1401        for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1402                if (priv->reg_domain == channel_table[i].reg_domain) {
1403                        if (channel >= channel_table[i].min &&
1404                            channel <= channel_table[i].max)
1405                                return 0;
1406                        else
1407                                return channel_table[i].min;
1408                }
1409        return 0;
1410}
1411
1412static int atmel_proc_output (char *buf, struct atmel_private *priv)
1413{
1414        int i;
1415        char *p = buf;
1416        char *s, *r, *c;
1417
1418        p += sprintf(p, "Driver version:\t\t%d.%d\n",
1419                     DRIVER_MAJOR, DRIVER_MINOR);
1420
1421        if (priv->station_state != STATION_STATE_DOWN) {
1422                p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1423                                "Firmware location:\t",
1424                             priv->host_info.major_version,
1425                             priv->host_info.minor_version,
1426                             priv->host_info.build_version);
1427
1428                if (priv->card_type != CARD_TYPE_EEPROM)
1429                        p += sprintf(p, "on card\n");
1430                else if (priv->firmware)
1431                        p += sprintf(p, "%s loaded by host\n",
1432                                     priv->firmware_id);
1433                else
1434                        p += sprintf(p, "%s loaded by hotplug\n",
1435                                     priv->firmware_id);
1436
1437                switch (priv->card_type) {
1438                case CARD_TYPE_PARALLEL_FLASH:
1439                        c = "Parallel flash";
1440                        break;
1441                case CARD_TYPE_SPI_FLASH:
1442                        c = "SPI flash\n";
1443                        break;
1444                case CARD_TYPE_EEPROM:
1445                        c = "EEPROM";
1446                        break;
1447                default:
1448                        c = "<unknown>";
1449                }
1450
1451                r = "<unknown>";
1452                for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1453                        if (priv->reg_domain == channel_table[i].reg_domain)
1454                                r = channel_table[i].name;
1455
1456                p += sprintf(p, "MAC memory type:\t%s\n", c);
1457                p += sprintf(p, "Regulatory domain:\t%s\n", r);
1458                p += sprintf(p, "Host CRC checking:\t%s\n",
1459                             priv->do_rx_crc ? "On" : "Off");
1460                p += sprintf(p, "WPA-capable firmware:\t%s\n",
1461                             priv->use_wpa ? "Yes" : "No");
1462        }
1463
1464        switch (priv->station_state) {
1465        case STATION_STATE_SCANNING:
1466                s = "Scanning";
1467                break;
1468        case STATION_STATE_JOINNING:
1469                s = "Joining";
1470                break;
1471        case STATION_STATE_AUTHENTICATING:
1472                s = "Authenticating";
1473                break;
1474        case STATION_STATE_ASSOCIATING:
1475                s = "Associating";
1476                break;
1477        case STATION_STATE_READY:
1478                s = "Ready";
1479                break;
1480        case STATION_STATE_REASSOCIATING:
1481                s = "Reassociating";
1482                break;
1483        case STATION_STATE_MGMT_ERROR:
1484                s = "Management error";
1485                break;
1486        case STATION_STATE_DOWN:
1487                s = "Down";
1488                break;
1489        default:
1490                s = "<unknown>";
1491        }
1492
1493        p += sprintf(p, "Current state:\t\t%s\n", s);
1494        return p - buf;
1495}
1496
1497static int atmel_read_proc(char *page, char **start, off_t off,
1498                           int count, int *eof, void *data)
1499{
1500        struct atmel_private *priv = data;
1501        int len = atmel_proc_output (page, priv);
1502        if (len <= off+count)
1503                *eof = 1;
1504        *start = page + off;
1505        len -= off;
1506        if (len > count)
1507                len = count;
1508        if (len < 0)
1509                len = 0;
1510        return len;
1511}
1512
1513static const struct net_device_ops atmel_netdev_ops = {
1514        .ndo_open               = atmel_open,
1515        .ndo_stop               = atmel_close,
1516        .ndo_change_mtu         = atmel_change_mtu,
1517        .ndo_set_mac_address    = atmel_set_mac_address,
1518        .ndo_start_xmit         = start_tx,
1519        .ndo_do_ioctl           = atmel_ioctl,
1520        .ndo_validate_addr      = eth_validate_addr,
1521};
1522
1523struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1524                                   const AtmelFWType fw_type,
1525                                   struct device *sys_dev,
1526                                   int (*card_present)(void *), void *card)
1527{
1528        struct proc_dir_entry *ent;
1529        struct net_device *dev;
1530        struct atmel_private *priv;
1531        int rc;
1532
1533        /* Create the network device object. */
1534        dev = alloc_etherdev(sizeof(*priv));
1535        if (!dev)
1536                return NULL;
1537
1538        if (dev_alloc_name(dev, dev->name) < 0) {
1539                printk(KERN_ERR "atmel: Couldn't get name!\n");
1540                goto err_out_free;
1541        }
1542
1543        priv = netdev_priv(dev);
1544        priv->dev = dev;
1545        priv->sys_dev = sys_dev;
1546        priv->present_callback = card_present;
1547        priv->card = card;
1548        priv->firmware = NULL;
1549        priv->firmware_id[0] = '\0';
1550        priv->firmware_type = fw_type;
1551        if (firmware) /* module parameter */
1552                strcpy(priv->firmware_id, firmware);
1553        priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1554        priv->station_state = STATION_STATE_DOWN;
1555        priv->do_rx_crc = 0;
1556        /* For PCMCIA cards, some chips need CRC, some don't
1557           so we have to probe. */
1558        if (priv->bus_type == BUS_TYPE_PCCARD) {
1559                priv->probe_crc = 1;
1560                priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1561        } else
1562                priv->probe_crc = 0;
1563        priv->last_qual = jiffies;
1564        priv->last_beacon_timestamp = 0;
1565        memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1566        memset(priv->BSSID, 0, 6);
1567        priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1568        priv->station_was_associated = 0;
1569
1570        priv->last_survey = jiffies;
1571        priv->preamble = LONG_PREAMBLE;
1572        priv->operating_mode = IW_MODE_INFRA;
1573        priv->connect_to_any_BSS = 0;
1574        priv->config_reg_domain = 0;
1575        priv->reg_domain = 0;
1576        priv->tx_rate = 3;
1577        priv->auto_tx_rate = 1;
1578        priv->channel = 4;
1579        priv->power_mode = 0;
1580        priv->SSID[0] = '\0';
1581        priv->SSID_size = 0;
1582        priv->new_SSID_size = 0;
1583        priv->frag_threshold = 2346;
1584        priv->rts_threshold = 2347;
1585        priv->short_retry = 7;
1586        priv->long_retry = 4;
1587
1588        priv->wep_is_on = 0;
1589        priv->default_key = 0;
1590        priv->encryption_level = 0;
1591        priv->exclude_unencrypted = 0;
1592        priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1593        priv->use_wpa = 0;
1594        memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1595        memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1596
1597        priv->default_beacon_period = priv->beacon_period = 100;
1598        priv->listen_interval = 1;
1599
1600        init_timer(&priv->management_timer);
1601        spin_lock_init(&priv->irqlock);
1602        spin_lock_init(&priv->timerlock);
1603        priv->management_timer.function = atmel_management_timer;
1604        priv->management_timer.data = (unsigned long) dev;
1605
1606        dev->netdev_ops = &atmel_netdev_ops;
1607        dev->wireless_handlers = &atmel_handler_def;
1608        dev->irq = irq;
1609        dev->base_addr = port;
1610
1611        SET_NETDEV_DEV(dev, sys_dev);
1612
1613        if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1614                printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1615                goto err_out_free;
1616        }
1617
1618        if (!request_region(dev->base_addr, 32,
1619                            priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1620                goto err_out_irq;
1621        }
1622
1623        if (register_netdev(dev))
1624                goto err_out_res;
1625
1626        if (!probe_atmel_card(dev)) {
1627                unregister_netdev(dev);
1628                goto err_out_res;
1629        }
1630
1631        netif_carrier_off(dev);
1632
1633        ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1634        if (!ent)
1635                printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1636
1637        printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1638               dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1639
1640        return dev;
1641
1642err_out_res:
1643        release_region(dev->base_addr, 32);
1644err_out_irq:
1645        free_irq(dev->irq, dev);
1646err_out_free:
1647        free_netdev(dev);
1648        return NULL;
1649}
1650
1651EXPORT_SYMBOL(init_atmel_card);
1652
1653void stop_atmel_card(struct net_device *dev)
1654{
1655        struct atmel_private *priv = netdev_priv(dev);
1656
1657        /* put a brick on it... */
1658        if (priv->bus_type == BUS_TYPE_PCCARD)
1659                atmel_write16(dev, GCR, 0x0060);
1660        atmel_write16(dev, GCR, 0x0040);
1661
1662        del_timer_sync(&priv->management_timer);
1663        unregister_netdev(dev);
1664        remove_proc_entry("driver/atmel", NULL);
1665        free_irq(dev->irq, dev);
1666        kfree(priv->firmware);
1667        release_region(dev->base_addr, 32);
1668        free_netdev(dev);
1669}
1670
1671EXPORT_SYMBOL(stop_atmel_card);
1672
1673static int atmel_set_essid(struct net_device *dev,
1674                           struct iw_request_info *info,
1675                           struct iw_point *dwrq,
1676                           char *extra)
1677{
1678        struct atmel_private *priv = netdev_priv(dev);
1679
1680        /* Check if we asked for `any' */
1681        if (dwrq->flags == 0) {
1682                priv->connect_to_any_BSS = 1;
1683        } else {
1684                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1685
1686                priv->connect_to_any_BSS = 0;
1687
1688                /* Check the size of the string */
1689                if (dwrq->length > MAX_SSID_LENGTH)
1690                         return -E2BIG;
1691                if (index != 0)
1692                        return -EINVAL;
1693
1694                memcpy(priv->new_SSID, extra, dwrq->length);
1695                priv->new_SSID_size = dwrq->length;
1696        }
1697
1698        return -EINPROGRESS;
1699}
1700
1701static int atmel_get_essid(struct net_device *dev,
1702                           struct iw_request_info *info,
1703                           struct iw_point *dwrq,
1704                           char *extra)
1705{
1706        struct atmel_private *priv = netdev_priv(dev);
1707
1708        /* Get the current SSID */
1709        if (priv->new_SSID_size != 0) {
1710                memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1711                dwrq->length = priv->new_SSID_size;
1712        } else {
1713                memcpy(extra, priv->SSID, priv->SSID_size);
1714                dwrq->length = priv->SSID_size;
1715        }
1716
1717        dwrq->flags = !priv->connect_to_any_BSS; /* active */
1718
1719        return 0;
1720}
1721
1722static int atmel_get_wap(struct net_device *dev,
1723                         struct iw_request_info *info,
1724                         struct sockaddr *awrq,
1725                         char *extra)
1726{
1727        struct atmel_private *priv = netdev_priv(dev);
1728        memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1729        awrq->sa_family = ARPHRD_ETHER;
1730
1731        return 0;
1732}
1733
1734static int atmel_set_encode(struct net_device *dev,
1735                            struct iw_request_info *info,
1736                            struct iw_point *dwrq,
1737                            char *extra)
1738{
1739        struct atmel_private *priv = netdev_priv(dev);
1740
1741        /* Basic checking: do we have a key to set ?
1742         * Note : with the new API, it's impossible to get a NULL pointer.
1743         * Therefore, we need to check a key size == 0 instead.
1744         * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1745         * when no key is present (only change flags), but older versions
1746         * don't do it. - Jean II */
1747        if (dwrq->length > 0) {
1748                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1749                int current_index = priv->default_key;
1750                /* Check the size of the key */
1751                if (dwrq->length > 13) {
1752                        return -EINVAL;
1753                }
1754                /* Check the index (none -> use current) */
1755                if (index < 0 || index >= 4)
1756                        index = current_index;
1757                else
1758                        priv->default_key = index;
1759                /* Set the length */
1760                if (dwrq->length > 5)
1761                        priv->wep_key_len[index] = 13;
1762                else
1763                        if (dwrq->length > 0)
1764                                priv->wep_key_len[index] = 5;
1765                        else
1766                                /* Disable the key */
1767                                priv->wep_key_len[index] = 0;
1768                /* Check if the key is not marked as invalid */
1769                if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1770                        /* Cleanup */
1771                        memset(priv->wep_keys[index], 0, 13);
1772                        /* Copy the key in the driver */
1773                        memcpy(priv->wep_keys[index], extra, dwrq->length);
1774                }
1775                /* WE specify that if a valid key is set, encryption
1776                 * should be enabled (user may turn it off later)
1777                 * This is also how "iwconfig ethX key on" works */
1778                if (index == current_index &&
1779                    priv->wep_key_len[index] > 0) {
1780                        priv->wep_is_on = 1;
1781                        priv->exclude_unencrypted = 1;
1782                        if (priv->wep_key_len[index] > 5) {
1783                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1784                                priv->encryption_level = 2;
1785                        } else {
1786                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1787                                priv->encryption_level = 1;
1788                        }
1789                }
1790        } else {
1791                /* Do we want to just set the transmit key index ? */
1792                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1793                if (index >= 0 && index < 4) {
1794                        priv->default_key = index;
1795                } else
1796                        /* Don't complain if only change the mode */
1797                        if (!(dwrq->flags & IW_ENCODE_MODE))
1798                                return -EINVAL;
1799        }
1800        /* Read the flags */
1801        if (dwrq->flags & IW_ENCODE_DISABLED) {
1802                priv->wep_is_on = 0;
1803                priv->encryption_level = 0;
1804                priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1805        } else {
1806                priv->wep_is_on = 1;
1807                if (priv->wep_key_len[priv->default_key] > 5) {
1808                        priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1809                        priv->encryption_level = 2;
1810                } else {
1811                        priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1812                        priv->encryption_level = 1;
1813                }
1814        }
1815        if (dwrq->flags & IW_ENCODE_RESTRICTED)
1816                priv->exclude_unencrypted = 1;
1817        if (dwrq->flags & IW_ENCODE_OPEN)
1818                priv->exclude_unencrypted = 0;
1819
1820        return -EINPROGRESS;            /* Call commit handler */
1821}
1822
1823static int atmel_get_encode(struct net_device *dev,
1824                            struct iw_request_info *info,
1825                            struct iw_point *dwrq,
1826                            char *extra)
1827{
1828        struct atmel_private *priv = netdev_priv(dev);
1829        int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1830
1831        if (!priv->wep_is_on)
1832                dwrq->flags = IW_ENCODE_DISABLED;
1833        else {
1834                if (priv->exclude_unencrypted)
1835                        dwrq->flags = IW_ENCODE_RESTRICTED;
1836                else
1837                        dwrq->flags = IW_ENCODE_OPEN;
1838        }
1839                /* Which key do we want ? -1 -> tx index */
1840        if (index < 0 || index >= 4)
1841                index = priv->default_key;
1842        dwrq->flags |= index + 1;
1843        /* Copy the key to the user buffer */
1844        dwrq->length = priv->wep_key_len[index];
1845        if (dwrq->length > 16) {
1846                dwrq->length = 0;
1847        } else {
1848                memset(extra, 0, 16);
1849                memcpy(extra, priv->wep_keys[index], dwrq->length);
1850        }
1851
1852        return 0;
1853}
1854
1855static int atmel_set_encodeext(struct net_device *dev,
1856                            struct iw_request_info *info,
1857                            union iwreq_data *wrqu,
1858                            char *extra)
1859{
1860        struct atmel_private *priv = netdev_priv(dev);
1861        struct iw_point *encoding = &wrqu->encoding;
1862        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1863        int idx, key_len, alg = ext->alg, set_key = 1;
1864
1865        /* Determine and validate the key index */
1866        idx = encoding->flags & IW_ENCODE_INDEX;
1867        if (idx) {
1868                if (idx < 1 || idx > 4)
1869                        return -EINVAL;
1870                idx--;
1871        } else
1872                idx = priv->default_key;
1873
1874        if (encoding->flags & IW_ENCODE_DISABLED)
1875            alg = IW_ENCODE_ALG_NONE;
1876
1877        if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1878                priv->default_key = idx;
1879                set_key = ext->key_len > 0 ? 1 : 0;
1880        }
1881
1882        if (set_key) {
1883                /* Set the requested key first */
1884                switch (alg) {
1885                case IW_ENCODE_ALG_NONE:
1886                        priv->wep_is_on = 0;
1887                        priv->encryption_level = 0;
1888                        priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1889                        break;
1890                case IW_ENCODE_ALG_WEP:
1891                        if (ext->key_len > 5) {
1892                                priv->wep_key_len[idx] = 13;
1893                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1894                                priv->encryption_level = 2;
1895                        } else if (ext->key_len > 0) {
1896                                priv->wep_key_len[idx] = 5;
1897                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1898                                priv->encryption_level = 1;
1899                        } else {
1900                                return -EINVAL;
1901                        }
1902                        priv->wep_is_on = 1;
1903                        memset(priv->wep_keys[idx], 0, 13);
1904                        key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1905                        memcpy(priv->wep_keys[idx], ext->key, key_len);
1906                        break;
1907                default:
1908                        return -EINVAL;
1909                }
1910        }
1911
1912        return -EINPROGRESS;
1913}
1914
1915static int atmel_get_encodeext(struct net_device *dev,
1916                            struct iw_request_info *info,
1917                            union iwreq_data *wrqu,
1918                            char *extra)
1919{
1920        struct atmel_private *priv = netdev_priv(dev);
1921        struct iw_point *encoding = &wrqu->encoding;
1922        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1923        int idx, max_key_len;
1924
1925        max_key_len = encoding->length - sizeof(*ext);
1926        if (max_key_len < 0)
1927                return -EINVAL;
1928
1929        idx = encoding->flags & IW_ENCODE_INDEX;
1930        if (idx) {
1931                if (idx < 1 || idx > 4)
1932                        return -EINVAL;
1933                idx--;
1934        } else
1935                idx = priv->default_key;
1936
1937        encoding->flags = idx + 1;
1938        memset(ext, 0, sizeof(*ext));
1939
1940        if (!priv->wep_is_on) {
1941                ext->alg = IW_ENCODE_ALG_NONE;
1942                ext->key_len = 0;
1943                encoding->flags |= IW_ENCODE_DISABLED;
1944        } else {
1945                if (priv->encryption_level > 0)
1946                        ext->alg = IW_ENCODE_ALG_WEP;
1947                else
1948                        return -EINVAL;
1949
1950                ext->key_len = priv->wep_key_len[idx];
1951                memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1952                encoding->flags |= IW_ENCODE_ENABLED;
1953        }
1954
1955        return 0;
1956}
1957
1958static int atmel_set_auth(struct net_device *dev,
1959                               struct iw_request_info *info,
1960                               union iwreq_data *wrqu, char *extra)
1961{
1962        struct atmel_private *priv = netdev_priv(dev);
1963        struct iw_param *param = &wrqu->param;
1964
1965        switch (param->flags & IW_AUTH_INDEX) {
1966        case IW_AUTH_WPA_VERSION:
1967        case IW_AUTH_CIPHER_PAIRWISE:
1968        case IW_AUTH_CIPHER_GROUP:
1969        case IW_AUTH_KEY_MGMT:
1970        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1971        case IW_AUTH_PRIVACY_INVOKED:
1972                /*
1973                 * atmel does not use these parameters
1974                 */
1975                break;
1976
1977        case IW_AUTH_DROP_UNENCRYPTED:
1978                priv->exclude_unencrypted = param->value ? 1 : 0;
1979                break;
1980
1981        case IW_AUTH_80211_AUTH_ALG: {
1982                        if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1983                                priv->exclude_unencrypted = 1;
1984                        } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1985                                priv->exclude_unencrypted = 0;
1986                        } else
1987                                return -EINVAL;
1988                        break;
1989                }
1990
1991        case IW_AUTH_WPA_ENABLED:
1992                /* Silently accept disable of WPA */
1993                if (param->value > 0)
1994                        return -EOPNOTSUPP;
1995                break;
1996
1997        default:
1998                return -EOPNOTSUPP;
1999        }
2000        return -EINPROGRESS;

2001}
2002
2003static int atmel_get_auth(struct net_device *dev,
2004                               struct iw_request_info *info,
2005                               union iwreq_data *wrqu, char *extra)
2006{
2007        struct atmel_private *priv = netdev_priv(dev);
2008        struct iw_param *param = &wrqu->param;
2009
2010        switch (param->flags & IW_AUTH_INDEX) {
2011        case IW_AUTH_DROP_UNENCRYPTED:
2012                param->value = priv->exclude_unencrypted;
2013                break;
2014
2015        case IW_AUTH_80211_AUTH_ALG:
2016                if (priv->exclude_unencrypted == 1)
2017                        param->value = IW_AUTH_ALG_SHARED_KEY;
2018                else
2019                        param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2020                break;
2021
2022        case IW_AUTH_WPA_ENABLED:
2023                param->value = 0;
2024                break;
2025
2026        default:
2027                return -EOPNOTSUPP;
2028        }
2029        return 0;
2030}
2031
2032
2033static int atmel_get_name(struct net_device *dev,
2034                          struct iw_request_info *info,
2035                          char *cwrq,
2036                          char *extra)
2037{
2038        strcpy(cwrq, "IEEE 802.11-DS");
2039        return 0;
2040}
2041
2042static int atmel_set_rate(struct net_device *dev,
2043                          struct iw_request_info *info,
2044                          struct iw_param *vwrq,
2045                          char *extra)
2046{
2047        struct atmel_private *priv = netdev_priv(dev);
2048
2049        if (vwrq->fixed == 0) {
2050                priv->tx_rate = 3;
2051                priv->auto_tx_rate = 1;
2052        } else {
2053                priv->auto_tx_rate = 0;
2054
2055                /* Which type of value ? */
2056                if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2057                        /* Setting by rate index */
2058                        priv->tx_rate = vwrq->value;
2059                } else {
2060                /* Setting by frequency value */
2061                        switch (vwrq->value) {
2062                        case  1000000:
2063                                priv->tx_rate = 0;
2064                                break;
2065                        case  2000000:
2066                                priv->tx_rate = 1;
2067                                break;
2068                        case  5500000:
2069                                priv->tx_rate = 2;
2070                                break;
2071                        case 11000000:
2072                                priv->tx_rate = 3;
2073                                break;
2074                        default:
2075                                return -EINVAL;
2076                        }
2077                }
2078        }
2079
2080        return -EINPROGRESS;
2081}
2082
2083static int atmel_set_mode(struct net_device *dev,
2084                          struct iw_request_info *info,
2085                          __u32 *uwrq,
2086                          char *extra)
2087{
2088        struct atmel_private *priv = netdev_priv(dev);
2089
2090        if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2091                return -EINVAL;
2092
2093        priv->operating_mode = *uwrq;
2094        return -EINPROGRESS;
2095}
2096
2097static int atmel_get_mode(struct net_device *dev,
2098                          struct iw_request_info *info,
2099                          __u32 *uwrq,
2100                          char *extra)
2101{
2102        struct atmel_private *priv = netdev_priv(dev);
2103
2104        *uwrq = priv->operating_mode;
2105        return 0;
2106}
2107
2108static int atmel_get_rate(struct net_device *dev,
2109                         struct iw_request_info *info,
2110                         struct iw_param *vwrq,
2111                         char *extra)
2112{
2113        struct atmel_private *priv = netdev_priv(dev);
2114
2115        if (priv->auto_tx_rate) {
2116                vwrq->fixed = 0;
2117                vwrq->value = 11000000;
2118        } else {
2119                vwrq->fixed = 1;
2120                switch (priv->tx_rate) {
2121                case 0:
2122                        vwrq->value =  1000000;
2123                        break;
2124                case 1:
2125                        vwrq->value =  2000000;
2126                        break;
2127                case 2:
2128                        vwrq->value =  5500000;
2129                        break;
2130                case 3:
2131                        vwrq->value = 11000000;
2132                        break;
2133                }
2134        }
2135        return 0;
2136}
2137
2138static int atmel_set_power(struct net_device *dev,
2139                           struct iw_request_info *info,
2140                           struct iw_param *vwrq,
2141                           char *extra)
2142{
2143        struct atmel_private *priv = netdev_priv(dev);
2144        priv->power_mode = vwrq->disabled ? 0 : 1;
2145        return -EINPROGRESS;
2146}
2147
2148static int atmel_get_power(struct net_device *dev,
2149                           struct iw_request_info *info,
2150                           struct iw_param *vwrq,
2151                           char *extra)
2152{
2153        struct atmel_private *priv = netdev_priv(dev);
2154        vwrq->disabled = priv->power_mode ? 0 : 1;
2155        vwrq->flags = IW_POWER_ON;
2156        return 0;
2157}
2158
2159static int atmel_set_retry(struct net_device *dev,
2160                           struct iw_request_info *info,
2161                           struct iw_param *vwrq,
2162                           char *extra)
2163{
2164        struct atmel_private *priv = netdev_priv(dev);
2165
2166        if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2167                if (vwrq->flags & IW_RETRY_LONG)
2168                        priv->long_retry = vwrq->value;
2169                else if (vwrq->flags & IW_RETRY_SHORT)
2170                        priv->short_retry = vwrq->value;
2171                else {
2172                        /* No modifier : set both */
2173                        priv->long_retry = vwrq->value;
2174                        priv->short_retry = vwrq->value;
2175                }
2176                return -EINPROGRESS;
2177        }
2178
2179        return -EINVAL;
2180}
2181
2182static int atmel_get_retry(struct net_device *dev,
2183                           struct iw_request_info *info,
2184                           struct iw_param *vwrq,
2185                           char *extra)
2186{
2187        struct atmel_private *priv = netdev_priv(dev);
2188
2189        vwrq->disabled = 0;      /* Can't be disabled */
2190
2191        /* Note : by default, display the short retry number */
2192        if (vwrq->flags & IW_RETRY_LONG) {
2193                vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2194                vwrq->value = priv->long_retry;
2195        } else {
2196                vwrq->flags = IW_RETRY_LIMIT;
2197                vwrq->value = priv->short_retry;
2198                if (priv->long_retry != priv->short_retry)
2199                        vwrq->flags |= IW_RETRY_SHORT;
2200        }
2201
2202        return 0;
2203}
2204
2205static int atmel_set_rts(struct net_device *dev,
2206                         struct iw_request_info *info,
2207                         struct iw_param *vwrq,
2208                         char *extra)
2209{
2210        struct atmel_private *priv = netdev_priv(dev);
2211        int rthr = vwrq->value;
2212
2213        if (vwrq->disabled)
2214                rthr = 2347;
2215        if ((rthr < 0) || (rthr > 2347)) {
2216                return -EINVAL;
2217        }
2218        priv->rts_threshold = rthr;
2219
2220        return -EINPROGRESS;            /* Call commit handler */
2221}
2222
2223static int atmel_get_rts(struct net_device *dev,
2224                         struct iw_request_info *info,
2225                         struct iw_param *vwrq,
2226                         char *extra)
2227{
2228        struct atmel_private *priv = netdev_priv(dev);
2229
2230        vwrq->value = priv->rts_threshold;
2231        vwrq->disabled = (vwrq->value >= 2347);
2232        vwrq->fixed = 1;
2233
2234        return 0;
2235}
2236
2237static int atmel_set_frag(struct net_device *dev,
2238                          struct iw_request_info *info,
2239                          struct iw_param *vwrq,
2240                          char *extra)
2241{
2242        struct atmel_private *priv = netdev_priv(dev);
2243        int fthr = vwrq->value;
2244
2245        if (vwrq->disabled)
2246                fthr = 2346;
2247        if ((fthr < 256) || (fthr > 2346)) {
2248                return -EINVAL;
2249        }
2250        fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2251        priv->frag_threshold = fthr;
2252
2253        return -EINPROGRESS;            /* Call commit handler */
2254}
2255
2256static int atmel_get_frag(struct net_device *dev,
2257                          struct iw_request_info *info,
2258                          struct iw_param *vwrq,
2259                          char *extra)
2260{
2261        struct atmel_private *priv = netdev_priv(dev);
2262
2263        vwrq->value = priv->frag_threshold;
2264        vwrq->disabled = (vwrq->value >= 2346);
2265        vwrq->fixed = 1;
2266
2267        return 0;
2268}
2269
2270static int atmel_set_freq(struct net_device *dev,
2271                          struct iw_request_info *info,
2272                          struct iw_freq *fwrq,
2273                          char *extra)
2274{
2275        struct atmel_private *priv = netdev_priv(dev);
2276        int rc = -EINPROGRESS;          /* Call commit handler */
2277
2278        /* If setting by frequency, convert to a channel */
2279        if (fwrq->e == 1) {
2280                int f = fwrq->m / 100000;
2281
2282                /* Hack to fall through... */
2283                fwrq->e = 0;
2284                fwrq->m = ieee80211_freq_to_dsss_chan(f);
2285        }
2286        /* Setting by channel number */
2287        if ((fwrq->m > 1000) || (fwrq->e > 0))
2288                rc = -EOPNOTSUPP;
2289        else {
2290                int channel = fwrq->m;
2291                if (atmel_validate_channel(priv, channel) == 0) {
2292                        priv->channel = channel;
2293                } else {
2294                        rc = -EINVAL;
2295                }
2296        }
2297        return rc;
2298}
2299
2300static int atmel_get_freq(struct net_device *dev,
2301                          struct iw_request_info *info,
2302                          struct iw_freq *fwrq,
2303                          char *extra)
2304{
2305        struct atmel_private *priv = netdev_priv(dev);
2306
2307        fwrq->m = priv->channel;
2308        fwrq->e = 0;
2309        return 0;
2310}
2311
2312static int atmel_set_scan(struct net_device *dev,
2313                          struct iw_request_info *info,
2314                          struct iw_point *dwrq,
2315                          char *extra)
2316{
2317        struct atmel_private *priv = netdev_priv(dev);
2318        unsigned long flags;
2319
2320        /* Note : you may have realised that, as this is a SET operation,
2321         * this is privileged and therefore a normal user can't
2322         * perform scanning.
2323         * This is not an error, while the device perform scanning,
2324         * traffic doesn't flow, so it's a perfect DoS...
2325         * Jean II */
2326
2327        if (priv->station_state == STATION_STATE_DOWN)
2328                return -EAGAIN;
2329
2330        /* Timeout old surveys. */
2331        if (time_after(jiffies, priv->last_survey + 20 * HZ))
2332                priv->site_survey_state = SITE_SURVEY_IDLE;
2333        priv->last_survey = jiffies;
2334
2335        /* Initiate a scan command */
2336        if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2337                return -EBUSY;
2338
2339        del_timer_sync(&priv->management_timer);
2340        spin_lock_irqsave(&priv->irqlock, flags);
2341
2342        priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2343        priv->fast_scan = 0;
2344        atmel_scan(priv, 0);
2345        spin_unlock_irqrestore(&priv->irqlock, flags);
2346
2347        return 0;
2348}
2349
2350static int atmel_get_scan(struct net_device *dev,
2351                          struct iw_request_info *info,
2352                          struct iw_point *dwrq,
2353                          char *extra)
2354{
2355        struct atmel_private *priv = netdev_priv(dev);
2356        int i;
2357        char *current_ev = extra;
2358        struct iw_event iwe;
2359
2360        if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2361                return -EAGAIN;
2362
2363        for (i = 0; i < priv->BSS_list_entries; i++) {
2364                iwe.cmd = SIOCGIWAP;
2365                iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2366                memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2367                current_ev = iwe_stream_add_event(info, current_ev,
2368                                                  extra + IW_SCAN_MAX_DATA,
2369                                                  &iwe, IW_EV_ADDR_LEN);
2370
2371                iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2372                if (iwe.u.data.length > 32)
2373                        iwe.u.data.length = 32;
2374                iwe.cmd = SIOCGIWESSID;
2375                iwe.u.data.flags = 1;
2376                current_ev = iwe_stream_add_point(info, current_ev,
2377                                                  extra + IW_SCAN_MAX_DATA,
2378                                                  &iwe, priv->BSSinfo[i].SSID);
2379
2380                iwe.cmd = SIOCGIWMODE;
2381                iwe.u.mode = priv->BSSinfo[i].BSStype;
2382                current_ev = iwe_stream_add_event(info, current_ev,
2383                                                  extra + IW_SCAN_MAX_DATA,
2384                                                  &iwe, IW_EV_UINT_LEN);
2385
2386                iwe.cmd = SIOCGIWFREQ;
2387                iwe.u.freq.m = priv->BSSinfo[i].channel;
2388                iwe.u.freq.e = 0;
2389                current_ev = iwe_stream_add_event(info, current_ev,
2390                                                  extra + IW_SCAN_MAX_DATA,
2391                                                  &iwe, IW_EV_FREQ_LEN);
2392
2393                /* Add quality statistics */
2394                iwe.cmd = IWEVQUAL;
2395                iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2396                iwe.u.qual.qual  = iwe.u.qual.level;
2397                /* iwe.u.qual.noise  = SOMETHING */
2398                current_ev = iwe_stream_add_event(info, current_ev,
2399                                                  extra + IW_SCAN_MAX_DATA,
2400                                                  &iwe, IW_EV_QUAL_LEN);
2401
2402
2403                iwe.cmd = SIOCGIWENCODE;
2404                if (priv->BSSinfo[i].UsingWEP)
2405                        iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2406                else
2407                        iwe.u.data.flags = IW_ENCODE_DISABLED;
2408                iwe.u.data.length = 0;
2409                current_ev = iwe_stream_add_point(info, current_ev,
2410                                                  extra + IW_SCAN_MAX_DATA,
2411                                                  &iwe, NULL);
2412        }
2413
2414        /* Length of data */
2415        dwrq->length = (current_ev - extra);
2416        dwrq->flags = 0;
2417
2418        return 0;
2419}
2420
2421static int atmel_get_range(struct net_device *dev,
2422                           struct iw_request_info *info,
2423                           struct iw_point *dwrq,
2424                           char *extra)
2425{
2426        struct atmel_private *priv = netdev_priv(dev);
2427        struct iw_range *range = (struct iw_range *) extra;
2428        int k, i, j;
2429
2430        dwrq->length = sizeof(struct iw_range);
2431        memset(range, 0, sizeof(struct iw_range));
2432        range->min_nwid = 0x0000;
2433        range->max_nwid = 0x0000;
2434        range->num_channels = 0;
2435        for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2436                if (priv->reg_domain == channel_table[j].reg_domain) {
2437                        range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2438                        break;
2439                }
2440        if (range->num_channels != 0) {
2441                for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2442                        range->freq[k].i = i; /* List index */
2443
2444                        /* Values in MHz -> * 10^5 * 10 */
2445                        range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2446                                            100000);
2447                        range->freq[k++].e = 1;
2448                }
2449                range->num_frequency = k;
2450        }
2451
2452        range->max_qual.qual = 100;
2453        range->max_qual.level = 100;
2454        range->max_qual.noise = 0;
2455        range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2456
2457        range->avg_qual.qual = 50;
2458        range->avg_qual.level = 50;
2459        range->avg_qual.noise = 0;
2460        range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2461
2462        range->sensitivity = 0;
2463
2464        range->bitrate[0] =  1000000;
2465        range->bitrate[1] =  2000000;
2466        range->bitrate[2] =  5500000;
2467        range->bitrate[3] = 11000000;
2468        range->num_bitrates = 4;
2469
2470        range->min_rts = 0;
2471        range->max_rts = 2347;
2472        range->min_frag = 256;
2473        range->max_frag = 2346;
2474
2475        range->encoding_size[0] = 5;
2476        range->encoding_size[1] = 13;
2477        range->num_encoding_sizes = 2;
2478        range->max_encoding_tokens = 4;
2479
2480        range->pmp_flags = IW_POWER_ON;
2481        range->pmt_flags = IW_POWER_ON;
2482        range->pm_capa = 0;
2483
2484        range->we_version_source = WIRELESS_EXT;
2485        range->we_version_compiled = WIRELESS_EXT;
2486        range->retry_capa = IW_RETRY_LIMIT ;
2487        range->retry_flags = IW_RETRY_LIMIT;
2488        range->r_time_flags = 0;
2489        range->min_retry = 1;
2490        range->max_retry = 65535;
2491
2492        return 0;
2493}
2494
2495static int atmel_set_wap(struct net_device *dev,
2496                         struct iw_request_info *info,
2497                         struct sockaddr *awrq,
2498                         char *extra)
2499{
2500        struct atmel_private *priv = netdev_priv(dev);
2501        int i;
2502        static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2503        static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2504        unsigned long flags;
2505
2506        if (awrq->sa_family != ARPHRD_ETHER)
2507                return -EINVAL;
2508
2509        if (!memcmp(any, awrq->sa_data, 6) ||
2510            !memcmp(off, awrq->sa_data, 6)) {
2511                del_timer_sync(&priv->management_timer);
2512                spin_lock_irqsave(&priv->irqlock, flags);
2513                atmel_scan(priv, 1);
2514                spin_unlock_irqrestore(&priv->irqlock, flags);
2515                return 0;
2516        }
2517
2518        for (i = 0; i < priv->BSS_list_entries; i++) {
2519                if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2520                        if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2521                                return -EINVAL;
2522                        } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2523                                return -EINVAL;
2524                        } else {
2525                                del_timer_sync(&priv->management_timer);
2526                                spin_lock_irqsave(&priv->irqlock, flags);
2527                                atmel_join_bss(priv, i);
2528                                spin_unlock_irqrestore(&priv->irqlock, flags);
2529                                return 0;
2530                        }
2531                }
2532        }
2533
2534        return -EINVAL;
2535}
2536
2537static int atmel_config_commit(struct net_device *dev,
2538                               struct iw_request_info *info,    /* NULL */
2539                               void *zwrq,                      /* NULL */
2540                               char *extra)                     /* NULL */
2541{
2542        return atmel_open(dev);
2543}
2544
2545static const iw_handler atmel_handler[] =
2546{
2547        (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2548        (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2549        (iw_handler) NULL,                      /* SIOCSIWNWID */
2550        (iw_handler) NULL,                      /* SIOCGIWNWID */
2551        (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2552        (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2553        (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2554        (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2555        (iw_handler) NULL,                      /* SIOCSIWSENS */
2556        (iw_handler) NULL,                      /* SIOCGIWSENS */
2557        (iw_handler) NULL,                      /* SIOCSIWRANGE */
2558        (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2559        (iw_handler) NULL,                      /* SIOCSIWPRIV */
2560        (iw_handler) NULL,                      /* SIOCGIWPRIV */
2561        (iw_handler) NULL,                      /* SIOCSIWSTATS */
2562        (iw_handler) NULL,                      /* SIOCGIWSTATS */
2563        (iw_handler) NULL,                      /* SIOCSIWSPY */
2564        (iw_handler) NULL,                      /* SIOCGIWSPY */
2565        (iw_handler) NULL,                      /* -- hole -- */
2566        (iw_handler) NULL,                      /* -- hole -- */
2567        (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2568        (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2569        (iw_handler) NULL,                      /* -- hole -- */
2570        (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2571        (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2572        (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2573        (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2574        (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2575        (iw_handler) NULL,                      /* SIOCSIWNICKN */
2576        (iw_handler) NULL,                      /* SIOCGIWNICKN */
2577        (iw_handler) NULL,                      /* -- hole -- */
2578        (iw_handler) NULL,                      /* -- hole -- */
2579        (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2580        (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2581        (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2582        (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2583        (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2584        (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2585        (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2586        (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2587        (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2588        (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2589        (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2590        (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2591        (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2592        (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2593        (iw_handler) NULL,                      /* -- hole -- */
2594        (iw_handler) NULL,                      /* -- hole -- */
2595        (iw_handler) NULL,                      /* SIOCSIWGENIE */
2596        (iw_handler) NULL,                      /* SIOCGIWGENIE */
2597        (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2598        (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2599        (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2600        (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2601        (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2602};
2603
2604static const iw_handler atmel_private_handler[] =
2605{
2606        NULL,                           /* SIOCIWFIRSTPRIV */
2607};
2608
2609typedef struct atmel_priv_ioctl {
2610        char id[32];
2611        unsigned char __user *data;
2612        unsigned short len;
2613} atmel_priv_ioctl;
2614
2615#define ATMELFWL        SIOCIWFIRSTPRIV
2616#define ATMELIDIFC      ATMELFWL + 1
2617#define ATMELRD         ATMELFWL + 2
2618#define ATMELMAGIC 0x51807
2619#define REGDOMAINSZ 20
2620
2621static const struct iw_priv_args atmel_private_args[] = {
2622        {
2623                .cmd = ATMELFWL,
2624                .set_args = IW_PRIV_TYPE_BYTE
2625                                | IW_PRIV_SIZE_FIXED
2626                                | sizeof (atmel_priv_ioctl),
2627                .get_args = IW_PRIV_TYPE_NONE,
2628                .name = "atmelfwl"
2629        }, {
2630                .cmd = ATMELIDIFC,
2631                .set_args = IW_PRIV_TYPE_NONE,
2632                .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2633                .name = "atmelidifc"
2634        }, {
2635                .cmd = ATMELRD,
2636                .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2637                .get_args = IW_PRIV_TYPE_NONE,
2638                .name = "regdomain"
2639        },
2640};
2641
2642static const struct iw_handler_def atmel_handler_def = {
2643        .num_standard   = ARRAY_SIZE(atmel_handler),
2644        .num_private    = ARRAY_SIZE(atmel_private_handler),
2645        .num_private_args = ARRAY_SIZE(atmel_private_args),
2646        .standard       = (iw_handler *) atmel_handler,
2647        .private        = (iw_handler *) atmel_private_handler,
2648        .private_args   = (struct iw_priv_args *) atmel_private_args,
2649        .get_wireless_stats = atmel_get_wireless_stats
2650};
2651
2652static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2653{
2654        int i, rc = 0;
2655        struct atmel_private *priv = netdev_priv(dev);
2656        atmel_priv_ioctl com;
2657        struct iwreq *wrq = (struct iwreq *) rq;
2658        unsigned char *new_firmware;
2659        char domain[REGDOMAINSZ + 1];
2660
2661        switch (cmd) {
2662        case ATMELIDIFC:
2663                wrq->u.param.value = ATMELMAGIC;
2664                break;
2665
2666        case ATMELFWL:
2667                if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2668                        rc = -EFAULT;
2669                        break;
2670                }
2671
2672                if (!capable(CAP_NET_ADMIN)) {
2673                        rc = -EPERM;
2674                        break;
2675                }
2676
2677                if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2678                        rc = -ENOMEM;
2679                        break;
2680                }
2681
2682                if (copy_from_user(new_firmware, com.data, com.len)) {
2683                        kfree(new_firmware);
2684                        rc = -EFAULT;
2685                        break;
2686                }
2687
2688                kfree(priv->firmware);
2689
2690                priv->firmware = new_firmware;
2691                priv->firmware_length = com.len;
2692                strncpy(priv->firmware_id, com.id, 31);
2693                priv->firmware_id[31] = '\0';
2694                break;
2695
2696        case ATMELRD:
2697                if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2698                        rc = -EFAULT;
2699                        break;
2700                }
2701
2702                if (!capable(CAP_NET_ADMIN)) {
2703                        rc = -EPERM;
2704                        break;
2705                }
2706
2707                domain[REGDOMAINSZ] = 0;
2708                rc = -EINVAL;
2709                for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2710                        /* strcasecmp doesn't exist in the library */
2711                        char *a = channel_table[i].name;
2712                        char *b = domain;
2713                        while (*a) {
2714                                char c1 = *a++;
2715                                char c2 = *b++;
2716                                if (tolower(c1) != tolower(c2))
2717                                        break;
2718                        }
2719                        if (!*a && !*b) {
2720                                priv->config_reg_domain = channel_table[i].reg_domain;
2721                                rc = 0;
2722                        }
2723                }
2724
2725                if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2726                        rc = atmel_open(dev);
2727                break;
2728
2729        default:
2730                rc = -EOPNOTSUPP;
2731        }
2732
2733        return rc;
2734}
2735
2736struct auth_body {
2737        __le16 alg;
2738        __le16 trans_seq;
2739        __le16 status;
2740        u8 el_id;
2741        u8 chall_text_len;
2742        u8 chall_text[253];
2743};
2744
2745static void atmel_enter_state(struct atmel_private *priv, int new_state)
2746{
2747        int old_state = priv->station_state;
2748
2749        if (new_state == old_state)
2750                return;
2751
2752        priv->station_state = new_state;
2753
2754        if (new_state == STATION_STATE_READY) {
2755                netif_start_queue(priv->dev);
2756                netif_carrier_on(priv->dev);
2757        }
2758
2759        if (old_state == STATION_STATE_READY) {
2760                netif_carrier_off(priv->dev);
2761                if (netif_running(priv->dev))
2762                        netif_stop_queue(priv->dev);
2763                priv->last_beacon_timestamp = 0;
2764        }
2765}
2766
2767static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2768{
2769        struct {
2770                u8 BSSID[6];
2771                u8 SSID[MAX_SSID_LENGTH];
2772                u8 scan_type;
2773                u8 channel;
2774                __le16 BSS_type;
2775                __le16 min_channel_time;
2776                __le16 max_channel_time;
2777                u8 options;
2778                u8 SSID_size;
2779        } cmd;
2780
2781        memset(cmd.BSSID, 0xff, 6);
2782
2783        if (priv->fast_scan) {
2784                cmd.SSID_size = priv->SSID_size;
2785                memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2786                cmd.min_channel_time = cpu_to_le16(10);
2787                cmd.max_channel_time = cpu_to_le16(50);
2788        } else {
2789                priv->BSS_list_entries = 0;
2790                cmd.SSID_size = 0;
2791                cmd.min_channel_time = cpu_to_le16(10);
2792                cmd.max_channel_time = cpu_to_le16(120);
2793        }
2794
2795        cmd.options = 0;
2796
2797        if (!specific_ssid)
2798                cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2799
2800        cmd.channel = (priv->channel & 0x7f);
2801        cmd.scan_type = SCAN_TYPE_ACTIVE;
2802        cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2803                BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2804
2805        atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2806
2807        /* This must come after all hardware access to avoid being messed up
2808           by stuff happening in interrupt context after we leave STATE_DOWN */
2809        atmel_enter_state(priv, STATION_STATE_SCANNING);
2810}
2811
2812static void join(struct atmel_private *priv, int type)
2813{
2814        struct {
2815                u8 BSSID[6];
2816                u8 SSID[MAX_SSID_LENGTH];
2817                u8 BSS_type; /* this is a short in a scan command - weird */
2818                u8 channel;
2819                __le16 timeout;
2820                u8 SSID_size;
2821                u8 reserved;
2822        } cmd;
2823
2824        cmd.SSID_size = priv->SSID_size;
2825        memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2826        memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2827        cmd.channel = (priv->channel & 0x7f);
2828        cmd.BSS_type = type;
2829        cmd.timeout = cpu_to_le16(2000);
2830
2831        atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2832}
2833
2834static void start(struct atmel_private *priv, int type)
2835{
2836        struct {
2837                u8 BSSID[6];
2838                u8 SSID[MAX_SSID_LENGTH];
2839                u8 BSS_type;
2840                u8 channel;
2841                u8 SSID_size;
2842                u8 reserved[3];
2843        } cmd;
2844
2845        cmd.SSID_size = priv->SSID_size;
2846        memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2847        memcpy(cmd.BSSID, priv->BSSID, 6);
2848        cmd.BSS_type = type;
2849        cmd.channel = (priv->channel & 0x7f);
2850
2851        atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2852}
2853
2854static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2855                                u8 channel)
2856{
2857        int rejoin = 0;
2858        int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2859                SHORT_PREAMBLE : LONG_PREAMBLE;
2860
2861        if (priv->preamble != new) {
2862                priv->preamble = new;
2863                rejoin = 1;
2864                atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2865        }
2866
2867        if (priv->channel != channel) {
2868                priv->channel = channel;
2869                rejoin = 1;
2870                atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2871        }
2872
2873        if (rejoin) {
2874                priv->station_is_associated = 0;
2875                atmel_enter_state(priv, STATION_STATE_JOINNING);
2876
2877                if (priv->operating_mode == IW_MODE_INFRA)
2878                        join(priv, BSS_TYPE_INFRASTRUCTURE);
2879                else
2880                        join(priv, BSS_TYPE_AD_HOC);
2881        }
2882}
2883
2884static void send_authentication_request(struct atmel_private *priv, u16 system,
2885                                        u8 *challenge, int challenge_len)
2886{
2887        struct ieee80211_hdr header;
2888        struct auth_body auth;
2889
2890        header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2891        header.duration_id = cpu_to_le16(0x8000);
2892        header.seq_ctrl = 0;
2893        memcpy(header.addr1, priv->CurrentBSSID, 6);
2894        memcpy(header.addr2, priv->dev->dev_addr, 6);
2895        memcpy(header.addr3, priv->CurrentBSSID, 6);
2896
2897        if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2898                /* no WEP for authentication frames with TrSeqNo 1 */
2899                header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2900
2901        auth.alg = cpu_to_le16(system);
2902
2903        auth.status = 0;
2904        auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2905        priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2906        priv->CurrentAuthentTransactionSeqNum += 2;
2907
2908        if (challenge_len != 0) {
2909                auth.el_id = 16; /* challenge_text */
2910                auth.chall_text_len = challenge_len;
2911                memcpy(auth.chall_text, challenge, challenge_len);
2912                atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2913        } else {
2914                atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2915        }
2916}
2917
2918static void send_association_request(struct atmel_private *priv, int is_reassoc)
2919{
2920        u8 *ssid_el_p;
2921        int bodysize;
2922        struct ieee80211_hdr header;
2923        struct ass_req_format {
2924                __le16 capability;
2925                __le16 listen_interval;
2926                u8 ap[6]; /* nothing after here directly accessible */
2927                u8 ssid_el_id;
2928                u8 ssid_len;
2929                u8 ssid[MAX_SSID_LENGTH];
2930                u8 sup_rates_el_id;
2931                u8 sup_rates_len;
2932                u8 rates[4];
2933        } body;
2934
2935        header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2936                (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2937        header.duration_id = cpu_to_le16(0x8000);
2938        header.seq_ctrl = 0;
2939
2940        memcpy(header.addr1, priv->CurrentBSSID, 6);
2941        memcpy(header.addr2, priv->dev->dev_addr, 6);
2942        memcpy(header.addr3, priv->CurrentBSSID, 6);
2943
2944        body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2945        if (priv->wep_is_on)
2946                body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2947        if (priv->preamble == SHORT_PREAMBLE)
2948                body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2949
2950        body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2951
2952        /* current AP address - only in reassoc frame */
2953        if (is_reassoc) {
2954                memcpy(body.ap, priv->CurrentBSSID, 6);
2955                ssid_el_p = (u8 *)&body.ssid_el_id;
2956                bodysize = 18 + priv->SSID_size;
2957        } else {
2958                ssid_el_p = (u8 *)&body.ap[0];
2959                bodysize = 12 + priv->SSID_size;
2960        }
2961
2962        ssid_el_p[0] = WLAN_EID_SSID;
2963        ssid_el_p[1] = priv->SSID_size;
2964        memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2965        ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2966        ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2967        memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2968
2969        atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2970}
2971
2972static int is_frame_from_current_bss(struct atmel_private *priv,
2973                                     struct ieee80211_hdr *header)
2974{
2975        if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2976                return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2977        else
2978                return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2979}
2980
2981static int retrieve_bss(struct atmel_private *priv)
2982{
2983        int i;
2984        int max_rssi = -128;
2985        int max_index = -1;
2986
2987        if (priv->BSS_list_entries == 0)
2988                return -1;
2989
2990        if (priv->connect_to_any_BSS) {
2991                /* Select a BSS with the max-RSSI but of the same type and of
2992                   the same WEP mode and that it is not marked as 'bad' (i.e.
2993                   we had previously failed to connect to this BSS with the
2994                   settings that we currently use) */
2995                priv->current_BSS = 0;
2996                for (i = 0; i < priv->BSS_list_entries; i++) {
2997                        if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2998                            ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2999                             (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
3000                            !(priv->BSSinfo[i].channel & 0x80)) {

3001                                max_rssi = priv->BSSinfo[i].RSSI;
3002                                priv->current_BSS = max_index = i;
3003                        }
3004                }
3005                return max_index;
3006        }
3007
3008        for (i = 0; i < priv->BSS_list_entries; i++) {
3009                if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3010                    memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3011                    priv->operating_mode == priv->BSSinfo[i].BSStype &&
3012                    atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3013                        if (priv->BSSinfo[i].RSSI >= max_rssi) {
3014                                max_rssi = priv->BSSinfo[i].RSSI;
3015                                max_index = i;
3016                        }
3017                }
3018        }
3019        return max_index;
3020}
3021
3022static void store_bss_info(struct atmel_private *priv,
3023                           struct ieee80211_hdr *header, u16 capability,
3024                           u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3025                           u8 *ssid, int is_beacon)
3026{
3027        u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3028        int i, index;
3029
3030        for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3031                if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
3032                        index = i;
3033
3034        /* If we process a probe and an entry from this BSS exists
3035           we will update the BSS entry with the info from this BSS.
3036           If we process a beacon we will only update RSSI */
3037
3038        if (index == -1) {
3039                if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3040                        return;
3041                index = priv->BSS_list_entries++;
3042                memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3043                priv->BSSinfo[index].RSSI = rssi;
3044        } else {
3045                if (rssi > priv->BSSinfo[index].RSSI)
3046                        priv->BSSinfo[index].RSSI = rssi;
3047                if (is_beacon)
3048                        return;
3049        }
3050
3051        priv->BSSinfo[index].channel = channel;
3052        priv->BSSinfo[index].beacon_period = beacon_period;
3053        priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3054        memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3055        priv->BSSinfo[index].SSIDsize = ssid_len;
3056
3057        if (capability & WLAN_CAPABILITY_IBSS)
3058                priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3059        else if (capability & WLAN_CAPABILITY_ESS)
3060                priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3061
3062        priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3063                SHORT_PREAMBLE : LONG_PREAMBLE;
3064}
3065
3066static void authenticate(struct atmel_private *priv, u16 frame_len)
3067{
3068        struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3069        u16 status = le16_to_cpu(auth->status);
3070        u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3071        u16 system = le16_to_cpu(auth->alg);
3072
3073        if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3074                /* no WEP */
3075                if (priv->station_was_associated) {
3076                        atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3077                        send_association_request(priv, 1);
3078                        return;
3079                } else {
3080                        atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3081                        send_association_request(priv, 0);
3082                        return;
3083                }
3084        }
3085
3086        if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3087                int should_associate = 0;
3088                /* WEP */
3089                if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3090                        return;
3091
3092                if (system == WLAN_AUTH_OPEN) {
3093                        if (trans_seq_no == 0x0002) {
3094                                should_associate = 1;
3095                        }
3096                } else if (system == WLAN_AUTH_SHARED_KEY) {
3097                        if (trans_seq_no == 0x0002 &&
3098                            auth->el_id == WLAN_EID_CHALLENGE) {
3099                                send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3100                                return;
3101                        } else if (trans_seq_no == 0x0004) {
3102                                should_associate = 1;
3103                        }
3104                }
3105
3106                if (should_associate) {
3107                        if (priv->station_was_associated) {
3108                                atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3109                                send_association_request(priv, 1);
3110                                return;
3111                        } else {
3112                                atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3113                                send_association_request(priv, 0);
3114                                return;
3115                        }
3116                }
3117        }
3118
3119        if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3120                /* Flip back and forth between WEP auth modes until the max
3121                 * authentication tries has been exceeded.
3122                 */
3123                if (system == WLAN_AUTH_OPEN) {
3124                        priv->CurrentAuthentTransactionSeqNum = 0x001;
3125                        priv->exclude_unencrypted = 1;
3126                        send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3127                        return;
3128                } else if (system == WLAN_AUTH_SHARED_KEY
3129                           && priv->wep_is_on) {
3130                        priv->CurrentAuthentTransactionSeqNum = 0x001;
3131                        priv->exclude_unencrypted = 0;
3132                        send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3133                        return;
3134                } else if (priv->connect_to_any_BSS) {
3135                        int bss_index;
3136
3137                        priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3138
3139                        if ((bss_index  = retrieve_bss(priv)) != -1) {
3140                                atmel_join_bss(priv, bss_index);
3141                                return;
3142                        }
3143                }
3144        }
3145
3146        priv->AuthenticationRequestRetryCnt = 0;
3147        atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3148        priv->station_is_associated = 0;
3149}
3150
3151static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3152{
3153        struct ass_resp_format {
3154                __le16 capability;
3155                __le16 status;
3156                __le16 ass_id;
3157                u8 el_id;
3158                u8 length;
3159                u8 rates[4];
3160        } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3161
3162        u16 status = le16_to_cpu(ass_resp->status);
3163        u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3164        u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3165
3166        union iwreq_data wrqu;
3167
3168        if (frame_len < 8 + rates_len)
3169                return;
3170
3171        if (status == WLAN_STATUS_SUCCESS) {
3172                if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3173                        priv->AssociationRequestRetryCnt = 0;
3174                else
3175                        priv->ReAssociationRequestRetryCnt = 0;
3176
3177                atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3178                                MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3179                atmel_set_mib(priv, Phy_Mib_Type,
3180                              PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3181                if (priv->power_mode == 0) {
3182                        priv->listen_interval = 1;
3183                        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3184                                       MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3185                        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3186                                        MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3187                } else {
3188                        priv->listen_interval = 2;
3189                        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3190                                       MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3191                        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3192                                        MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3193                }
3194
3195                priv->station_is_associated = 1;
3196                priv->station_was_associated = 1;
3197                atmel_enter_state(priv, STATION_STATE_READY);
3198
3199                /* Send association event to userspace */
3200                wrqu.data.length = 0;
3201                wrqu.data.flags = 0;
3202                memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3203                wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3204                wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3205
3206                return;
3207        }
3208
3209        if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3210            status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3211            status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3212            priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3213                mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3214                priv->AssociationRequestRetryCnt++;
3215                send_association_request(priv, 0);
3216                return;
3217        }
3218
3219        if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3220            status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3221            status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3222            priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3223                mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3224                priv->ReAssociationRequestRetryCnt++;
3225                send_association_request(priv, 1);
3226                return;
3227        }
3228
3229        atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3230        priv->station_is_associated = 0;
3231
3232        if (priv->connect_to_any_BSS) {
3233                int bss_index;
3234                priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3235
3236                if ((bss_index = retrieve_bss(priv)) != -1)
3237                        atmel_join_bss(priv, bss_index);
3238        }
3239}
3240
3241static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3242{
3243        struct bss_info *bss =  &priv->BSSinfo[bss_index];
3244
3245        memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3246        memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3247
3248        /* The WPA stuff cares about the current AP address */
3249        if (priv->use_wpa)
3250                build_wpa_mib(priv);
3251
3252        /* When switching to AdHoc turn OFF Power Save if needed */
3253
3254        if (bss->BSStype == IW_MODE_ADHOC &&
3255            priv->operating_mode != IW_MODE_ADHOC &&
3256            priv->power_mode) {
3257                priv->power_mode = 0;
3258                priv->listen_interval = 1;
3259                atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3260                               MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3261                atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3262                                MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3263        }
3264
3265        priv->operating_mode = bss->BSStype;
3266        priv->channel = bss->channel & 0x7f;
3267        priv->beacon_period = bss->beacon_period;
3268
3269        if (priv->preamble != bss->preamble) {
3270                priv->preamble = bss->preamble;
3271                atmel_set_mib8(priv, Local_Mib_Type,
3272                               LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3273        }
3274
3275        if (!priv->wep_is_on && bss->UsingWEP) {
3276                atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3277                priv->station_is_associated = 0;
3278                return;
3279        }
3280
3281        if (priv->wep_is_on && !bss->UsingWEP) {
3282                atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3283                priv->station_is_associated = 0;
3284                return;
3285        }
3286
3287        atmel_enter_state(priv, STATION_STATE_JOINNING);
3288
3289        if (priv->operating_mode == IW_MODE_INFRA)
3290                join(priv, BSS_TYPE_INFRASTRUCTURE);
3291        else
3292                join(priv, BSS_TYPE_AD_HOC);
3293}
3294
3295static void restart_search(struct atmel_private *priv)
3296{
3297        int bss_index;
3298
3299        if (!priv->connect_to_any_BSS) {
3300                atmel_scan(priv, 1);
3301        } else {
3302                priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3303
3304                if ((bss_index = retrieve_bss(priv)) != -1)
3305                        atmel_join_bss(priv, bss_index);
3306                else
3307                        atmel_scan(priv, 0);
3308        }
3309}
3310
3311static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3312{
3313        u8 old = priv->wstats.qual.level;
3314        u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3315
3316        switch (priv->firmware_type) {
3317        case ATMEL_FW_TYPE_502E:
3318                max_rssi = 63; /* 502-rmfd-reve max by experiment */
3319                break;
3320        default:
3321                break;
3322        }
3323
3324        rssi = rssi * 100 / max_rssi;
3325        if ((rssi + old) % 2)
3326                priv->wstats.qual.level = (rssi + old) / 2 + 1;
3327        else
3328                priv->wstats.qual.level = (rssi + old) / 2;
3329        priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3330        priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3331}
3332
3333static void atmel_smooth_qual(struct atmel_private *priv)
3334{
3335        unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3336        while (time_diff--) {
3337                priv->last_qual += HZ;
3338                priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3339                priv->wstats.qual.qual +=
3340                        priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3341                priv->beacons_this_sec = 0;
3342        }
3343        priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3344        priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3345}
3346
3347/* deals with incoming management frames. */
3348static void atmel_management_frame(struct atmel_private *priv,
3349                                   struct ieee80211_hdr *header,
3350                                   u16 frame_len, u8 rssi)
3351{
3352        u16 subtype;
3353
3354        subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3355        switch (subtype) {
3356        case IEEE80211_STYPE_BEACON:
3357        case IEEE80211_STYPE_PROBE_RESP:
3358
3359                /* beacon frame has multiple variable-length fields -
3360                   never let an engineer loose with a data structure design. */
3361                {
3362                        struct beacon_format {
3363                                __le64 timestamp;
3364                                __le16 interval;
3365                                __le16 capability;
3366                                u8 ssid_el_id;
3367                                u8 ssid_length;
3368                                /* ssid here */
3369                                u8 rates_el_id;
3370                                u8 rates_length;
3371                                /* rates here */
3372                                u8 ds_el_id;
3373                                u8 ds_length;
3374                                /* ds here */
3375                        } *beacon = (struct beacon_format *)priv->rx_buf;
3376
3377                        u8 channel, rates_length, ssid_length;
3378                        u64 timestamp = le64_to_cpu(beacon->timestamp);
3379                        u16 beacon_interval = le16_to_cpu(beacon->interval);
3380                        u16 capability = le16_to_cpu(beacon->capability);
3381                        u8 *beaconp = priv->rx_buf;
3382                        ssid_length = beacon->ssid_length;
3383                        /* this blows chunks. */
3384                        if (frame_len < 14 || frame_len < ssid_length + 15)
3385                                return;
3386                        rates_length = beaconp[beacon->ssid_length + 15];
3387                        if (frame_len < ssid_length + rates_length + 18)
3388                                return;
3389                        if (ssid_length >  MAX_SSID_LENGTH)
3390                                return;
3391                        channel = beaconp[ssid_length + rates_length + 18];
3392
3393                        if (priv->station_state == STATION_STATE_READY) {
3394                                smooth_rssi(priv, rssi);
3395                                if (is_frame_from_current_bss(priv, header)) {
3396                                        priv->beacons_this_sec++;
3397                                        atmel_smooth_qual(priv);
3398                                        if (priv->last_beacon_timestamp) {
3399                                                /* Note truncate this to 32 bits - kernel can't divide a long long */
3400                                                u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3401                                                int beacons = beacon_delay / (beacon_interval * 1000);
3402                                                if (beacons > 1)
3403                                                        priv->wstats.miss.beacon += beacons - 1;
3404                                        }
3405                                        priv->last_beacon_timestamp = timestamp;
3406                                        handle_beacon_probe(priv, capability, channel);
3407                                }
3408                        }
3409
3410                        if (priv->station_state == STATION_STATE_SCANNING)
3411                                store_bss_info(priv, header, capability,
3412                                               beacon_interval, channel, rssi,
3413                                               ssid_length,
3414                                               &beacon->rates_el_id,
3415                                               subtype == IEEE80211_STYPE_BEACON);
3416                }
3417                break;
3418
3419        case IEEE80211_STYPE_AUTH:
3420
3421                if (priv->station_state == STATION_STATE_AUTHENTICATING)
3422                        authenticate(priv, frame_len);
3423
3424                break;
3425
3426        case IEEE80211_STYPE_ASSOC_RESP:
3427        case IEEE80211_STYPE_REASSOC_RESP:
3428
3429                if (priv->station_state == STATION_STATE_ASSOCIATING ||
3430                    priv->station_state == STATION_STATE_REASSOCIATING)
3431                        associate(priv, frame_len, subtype);
3432
3433                break;
3434
3435        case IEEE80211_STYPE_DISASSOC:
3436                if (priv->station_is_associated &&
3437                    priv->operating_mode == IW_MODE_INFRA &&
3438                    is_frame_from_current_bss(priv, header)) {
3439                        priv->station_was_associated = 0;
3440                        priv->station_is_associated = 0;
3441
3442                        atmel_enter_state(priv, STATION_STATE_JOINNING);
3443                        join(priv, BSS_TYPE_INFRASTRUCTURE);
3444                }
3445
3446                break;
3447
3448        case IEEE80211_STYPE_DEAUTH:
3449                if (priv->operating_mode == IW_MODE_INFRA &&
3450                    is_frame_from_current_bss(priv, header)) {
3451                        priv->station_was_associated = 0;
3452
3453                        atmel_enter_state(priv, STATION_STATE_JOINNING);
3454                        join(priv, BSS_TYPE_INFRASTRUCTURE);
3455                }
3456
3457                break;
3458        }
3459}
3460
3461/* run when timer expires */
3462static void atmel_management_timer(u_long a)
3463{
3464        struct net_device *dev = (struct net_device *) a;
3465        struct atmel_private *priv = netdev_priv(dev);
3466        unsigned long flags;
3467
3468        /* Check if the card has been yanked. */
3469        if (priv->card && priv->present_callback &&
3470                !(*priv->present_callback)(priv->card))
3471                return;
3472
3473        spin_lock_irqsave(&priv->irqlock, flags);
3474
3475        switch (priv->station_state) {
3476
3477        case STATION_STATE_AUTHENTICATING:
3478                if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3479                        atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3480                        priv->station_is_associated = 0;
3481                        priv->AuthenticationRequestRetryCnt = 0;
3482                        restart_search(priv);
3483                } else {
3484                        int auth = WLAN_AUTH_OPEN;
3485                        priv->AuthenticationRequestRetryCnt++;
3486                        priv->CurrentAuthentTransactionSeqNum = 0x0001;
3487                        mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3488                        if (priv->wep_is_on && priv->exclude_unencrypted)
3489                                auth = WLAN_AUTH_SHARED_KEY;
3490                        send_authentication_request(priv, auth, NULL, 0);
3491          }
3492          break;
3493
3494        case STATION_STATE_ASSOCIATING:
3495                if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3496                        atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3497                        priv->station_is_associated = 0;
3498                        priv->AssociationRequestRetryCnt = 0;
3499                        restart_search(priv);
3500                } else {
3501                        priv->AssociationRequestRetryCnt++;
3502                        mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3503                        send_association_request(priv, 0);
3504                }
3505          break;
3506
3507        case STATION_STATE_REASSOCIATING:
3508                if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3509                        atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3510                        priv->station_is_associated = 0;
3511                        priv->ReAssociationRequestRetryCnt = 0;
3512                        restart_search(priv);
3513                } else {
3514                        priv->ReAssociationRequestRetryCnt++;
3515                        mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3516                        send_association_request(priv, 1);
3517                }
3518                break;
3519
3520        default:
3521                break;
3522        }
3523
3524        spin_unlock_irqrestore(&priv->irqlock, flags);
3525}
3526
3527static void atmel_command_irq(struct atmel_private *priv)
3528{
3529        u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3530        u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3531        int fast_scan;
3532        union iwreq_data wrqu;
3533
3534        if (status == CMD_STATUS_IDLE ||
3535            status == CMD_STATUS_IN_PROGRESS)
3536                return;
3537
3538        switch (command) {
3539        case CMD_Start:
3540                if (status == CMD_STATUS_COMPLETE) {
3541                        priv->station_was_associated = priv->station_is_associated;
3542                        atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3543                                      (u8 *)priv->CurrentBSSID, 6);
3544                        atmel_enter_state(priv, STATION_STATE_READY);
3545                }
3546                break;
3547
3548        case CMD_Scan:
3549                fast_scan = priv->fast_scan;
3550                priv->fast_scan = 0;
3551
3552                if (status != CMD_STATUS_COMPLETE) {
3553                        atmel_scan(priv, 1);
3554                } else {
3555                        int bss_index = retrieve_bss(priv);
3556                        int notify_scan_complete = 1;
3557                        if (bss_index != -1) {
3558                                atmel_join_bss(priv, bss_index);
3559                        } else if (priv->operating_mode == IW_MODE_ADHOC &&
3560                                   priv->SSID_size != 0) {
3561                                start(priv, BSS_TYPE_AD_HOC);
3562                        } else {
3563                                priv->fast_scan = !fast_scan;
3564                                atmel_scan(priv, 1);
3565                                notify_scan_complete = 0;
3566                        }
3567                        priv->site_survey_state = SITE_SURVEY_COMPLETED;
3568                        if (notify_scan_complete) {
3569                                wrqu.data.length = 0;
3570                                wrqu.data.flags = 0;
3571                                wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3572                        }
3573                }
3574                break;
3575
3576        case CMD_SiteSurvey:
3577                priv->fast_scan = 0;
3578
3579                if (status != CMD_STATUS_COMPLETE)
3580                        return;
3581
3582                priv->site_survey_state = SITE_SURVEY_COMPLETED;
3583                if (priv->station_is_associated) {
3584                        atmel_enter_state(priv, STATION_STATE_READY);
3585                        wrqu.data.length = 0;
3586                        wrqu.data.flags = 0;
3587                        wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3588                } else {
3589                        atmel_scan(priv, 1);
3590                }
3591                break;
3592
3593        case CMD_Join:
3594                if (status == CMD_STATUS_COMPLETE) {
3595                        if (priv->operating_mode == IW_MODE_ADHOC) {
3596                                priv->station_was_associated = priv->station_is_associated;
3597                                atmel_enter_state(priv, STATION_STATE_READY);
3598                        } else {
3599                                int auth = WLAN_AUTH_OPEN;
3600                                priv->AuthenticationRequestRetryCnt = 0;
3601                                atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3602
3603                                mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3604                                priv->CurrentAuthentTransactionSeqNum = 0x0001;
3605                                if (priv->wep_is_on && priv->exclude_unencrypted)
3606                                        auth = WLAN_AUTH_SHARED_KEY;
3607                                send_authentication_request(priv, auth, NULL, 0);
3608                        }
3609                        return;
3610                }
3611
3612                atmel_scan(priv, 1);
3613        }
3614}
3615
3616static int atmel_wakeup_firmware(struct atmel_private *priv)
3617{
3618        struct host_info_struct *iface = &priv->host_info;
3619        u16 mr1, mr3;
3620        int i;
3621
3622        if (priv->card_type == CARD_TYPE_SPI_FLASH)
3623                atmel_set_gcr(priv->dev, GCR_REMAP);
3624
3625        /* wake up on-board processor */
3626        atmel_clear_gcr(priv->dev, 0x0040);
3627        atmel_write16(priv->dev, BSR, BSS_SRAM);
3628
3629        if (priv->card_type == CARD_TYPE_SPI_FLASH)
3630                mdelay(100);
3631
3632        /* and wait for it */
3633        for (i = LOOP_RETRY_LIMIT; i; i--) {
3634                mr1 = atmel_read16(priv->dev, MR1);
3635                mr3 = atmel_read16(priv->dev, MR3);
3636
3637                if (mr3 & MAC_BOOT_COMPLETE)
3638                        break;
3639                if (mr1 & MAC_BOOT_COMPLETE &&
3640                    priv->bus_type == BUS_TYPE_PCCARD)
3641                        break;
3642        }
3643
3644        if (i == 0) {
3645                printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3646                return -EIO;
3647        }
3648
3649        if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3650                printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3651                return -ENODEV;
3652        }
3653
3654        /* now check for completion of MAC initialization through
3655           the FunCtrl field of the IFACE, poll MR1 to detect completion of
3656           MAC initialization, check completion status, set interrupt mask,
3657           enables interrupts and calls Tx and Rx initialization functions */
3658
3659        atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3660
3661        for (i = LOOP_RETRY_LIMIT; i; i--) {
3662                mr1 = atmel_read16(priv->dev, MR1);
3663                mr3 = atmel_read16(priv->dev, MR3);
3664
3665                if (mr3 & MAC_INIT_COMPLETE)
3666                        break;
3667                if (mr1 & MAC_INIT_COMPLETE &&
3668                    priv->bus_type == BUS_TYPE_PCCARD)
3669                        break;
3670        }
3671
3672        if (i == 0) {
3673                printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3674                                priv->dev->name);
3675                return -EIO;
3676        }
3677
3678        /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3679        if ((mr3 & MAC_INIT_COMPLETE) &&
3680            !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3681                printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3682                return -EIO;
3683        }
3684        if ((mr1 & MAC_INIT_COMPLETE) &&
3685            !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3686                printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3687                return -EIO;
3688        }
3689
3690        atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3691                           priv->host_info_base, sizeof(*iface));
3692
3693        iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3694        iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3695        iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3696        iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3697        iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3698        iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3699        iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3700        iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3701        iface->build_version = le16_to_cpu(iface->build_version);
3702        iface->command_pos = le16_to_cpu(iface->command_pos);
3703        iface->major_version = le16_to_cpu(iface->major_version);
3704        iface->minor_version = le16_to_cpu(iface->minor_version);
3705        iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3706        iface->mac_status = le16_to_cpu(iface->mac_status);
3707
3708        return 0;
3709}
3710
3711/* determine type of memory and MAC address */
3712static int probe_atmel_card(struct net_device *dev)
3713{
3714        int rc = 0;
3715        struct atmel_private *priv = netdev_priv(dev);
3716
3717        /* reset pccard */
3718        if (priv->bus_type == BUS_TYPE_PCCARD)
3719                atmel_write16(dev, GCR, 0x0060);
3720
3721        atmel_write16(dev, GCR, 0x0040);
3722        mdelay(500);
3723
3724        if (atmel_read16(dev, MR2) == 0) {
3725                /* No stored firmware so load a small stub which just
3726                   tells us the MAC address */
3727                int i;
3728                priv->card_type = CARD_TYPE_EEPROM;
3729                atmel_write16(dev, BSR, BSS_IRAM);
3730                atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3731                atmel_set_gcr(dev, GCR_REMAP);
3732                atmel_clear_gcr(priv->dev, 0x0040);
3733                atmel_write16(dev, BSR, BSS_SRAM);
3734                for (i = LOOP_RETRY_LIMIT; i; i--)
3735                        if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3736                                break;
3737                if (i == 0) {
3738                        printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3739                } else {
3740                        atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3741                        /* got address, now squash it again until the network
3742                           interface is opened */
3743                        if (priv->bus_type == BUS_TYPE_PCCARD)
3744                                atmel_write16(dev, GCR, 0x0060);
3745                        atmel_write16(dev, GCR, 0x0040);
3746                        rc = 1;
3747                }
3748        } else if (atmel_read16(dev, MR4) == 0) {
3749                /* Mac address easy in this case. */
3750                priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3751                atmel_write16(dev,  BSR, 1);
3752                atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3753                atmel_write16(dev,  BSR, 0x200);
3754                rc = 1;
3755        } else {
3756                /* Standard firmware in flash, boot it up and ask
3757                   for the Mac Address */
3758                priv->card_type = CARD_TYPE_SPI_FLASH;
3759                if (atmel_wakeup_firmware(priv) == 0) {
3760                        atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3761
3762                        /* got address, now squash it again until the network
3763                           interface is opened */
3764                        if (priv->bus_type == BUS_TYPE_PCCARD)
3765                                atmel_write16(dev, GCR, 0x0060);
3766                        atmel_write16(dev, GCR, 0x0040);
3767                        rc = 1;
3768                }
3769        }
3770
3771        if (rc) {
3772                if (dev->dev_addr[0] == 0xFF) {
3773                        static const u8 default_mac[] = {
3774                                0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3775                        };
3776                        printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3777                        memcpy(dev->dev_addr, default_mac, 6);
3778                }
3779        }
3780
3781        return rc;
3782}
3783
3784/* Move the encyption information on the MIB structure.
3785   This routine is for the pre-WPA firmware: later firmware has
3786   a different format MIB and a different routine. */
3787static void build_wep_mib(struct atmel_private *priv)
3788{
3789        struct { /* NB this is matched to the hardware, don't change. */
3790                u8 wep_is_on;
3791                u8 default_key; /* 0..3 */
3792                u8 reserved;
3793                u8 exclude_unencrypted;
3794
3795                u32 WEPICV_error_count;
3796                u32 WEP_excluded_count;
3797
3798                u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3799                u8 encryption_level; /* 0, 1, 2 */
3800                u8 reserved2[3];
3801        } mib;
3802        int i;
3803
3804        mib.wep_is_on = priv->wep_is_on;
3805        if (priv->wep_is_on) {
3806                if (priv->wep_key_len[priv->default_key] > 5)
3807                        mib.encryption_level = 2;
3808                else
3809                        mib.encryption_level = 1;
3810        } else {
3811                mib.encryption_level = 0;
3812        }
3813
3814        mib.default_key = priv->default_key;
3815        mib.exclude_unencrypted = priv->exclude_unencrypted;
3816
3817        for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3818                memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3819
3820        atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3821}
3822
3823static void build_wpa_mib(struct atmel_private *priv)
3824{
3825        /* This is for the later (WPA enabled) firmware. */
3826
3827        struct { /* NB this is matched to the hardware, don't change. */
3828                u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3829                u8 receiver_address[6];
3830                u8 wep_is_on;
3831                u8 default_key; /* 0..3 */
3832                u8 group_key;
3833                u8 exclude_unencrypted;
3834                u8 encryption_type;
3835                u8 reserved;
3836
3837                u32 WEPICV_error_count;
3838                u32 WEP_excluded_count;
3839
3840                u8 key_RSC[4][8];
3841        } mib;
3842
3843        int i;
3844
3845        mib.wep_is_on = priv->wep_is_on;
3846        mib.exclude_unencrypted = priv->exclude_unencrypted;
3847        memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3848
3849        /* zero all the keys before adding in valid ones. */
3850        memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3851
3852        if (priv->wep_is_on) {
3853                /* There's a comment in the Atmel code to the effect that this
3854                   is only valid when still using WEP, it may need to be set to
3855                   something to use WPA */
3856                memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3857
3858                mib.default_key = mib.group_key = 255;
3859                for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3860                        if (priv->wep_key_len[i] > 0) {
3861                                memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3862                                if (i == priv->default_key) {
3863                                        mib.default_key = i;
3864                                        mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3865                                        mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3866                                } else {
3867                                        mib.group_key = i;
3868                                        priv->group_cipher_suite = priv->pairwise_cipher_suite;
3869                                        mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3870                                        mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3871                                }
3872                        }
3873                }
3874                if (mib.default_key == 255)
3875                        mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3876                if (mib.group_key == 255)
3877                        mib.group_key = mib.default_key;
3878
3879        }
3880
3881        atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3882}
3883
3884static int reset_atmel_card(struct net_device *dev)
3885{
3886        /* do everything necessary to wake up the hardware, including
3887           waiting for the lightning strike and throwing the knife switch....
3888
3889           set all the Mib values which matter in the card to match
3890           their settings in the atmel_private structure. Some of these
3891           can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3892           can only be changed by tearing down the world and coming back through
3893           here.
3894
3895           This routine is also responsible for initialising some
3896           hardware-specific fields in the atmel_private structure,
3897           including a copy of the firmware's hostinfo structure
3898           which is the route into the rest of the firmware datastructures. */
3899
3900        struct atmel_private *priv = netdev_priv(dev);
3901        u8 configuration;
3902        int old_state = priv->station_state;
3903        int err = 0;
3904
3905        /* data to add to the firmware names, in priority order
3906           this implemenents firmware versioning */
3907
3908        static char *firmware_modifier[] = {
3909                "-wpa",
3910                "",
3911                NULL
3912        };
3913
3914        /* reset pccard */
3915        if (priv->bus_type == BUS_TYPE_PCCARD)
3916                atmel_write16(priv->dev, GCR, 0x0060);
3917
3918        /* stop card , disable interrupts */
3919        atmel_write16(priv->dev, GCR, 0x0040);
3920
3921        if (priv->card_type == CARD_TYPE_EEPROM) {
3922                /* copy in firmware if needed */
3923                const struct firmware *fw_entry = NULL;
3924                const unsigned char *fw;
3925                int len = priv->firmware_length;
3926                if (!(fw = priv->firmware)) {
3927                        if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3928                                if (strlen(priv->firmware_id) == 0) {
3929                                        printk(KERN_INFO
3930                                               "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3931                                               dev->name);
3932                                        printk(KERN_INFO
3933                                               "%s: if not, use the firmware= module parameter.\n",
3934                                               dev->name);
3935                                        strcpy(priv->firmware_id, "atmel_at76c502.bin");
3936                                }
3937                                err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3938                                if (err != 0) {
3939                                        printk(KERN_ALERT
3940                                               "%s: firmware %s is missing, cannot continue.\n",
3941                                               dev->name, priv->firmware_id);
3942                                        return err;
3943                                }
3944                        } else {
3945                                int fw_index = 0;
3946                                int success = 0;
3947
3948                                /* get firmware filename entry based on firmware type ID */
3949                                while (fw_table[fw_index].fw_type != priv->firmware_type
3950                                                && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3951                                        fw_index++;
3952
3953                                /* construct the actual firmware file name */
3954                                if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3955                                        int i;
3956                                        for (i = 0; firmware_modifier[i]; i++) {
3957                                                snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3958                                                        firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3959                                                priv->firmware_id[31] = '\0';
3960                                                if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3961                                                        success = 1;
3962                                                        break;
3963                                                }
3964                                        }
3965                                }
3966                                if (!success) {
3967                                        printk(KERN_ALERT
3968                                               "%s: firmware %s is missing, cannot start.\n",
3969                                               dev->name, priv->firmware_id);
3970                                        priv->firmware_id[0] = '\0';
3971                                        return -ENOENT;
3972                                }
3973                        }
3974
3975                        fw = fw_entry->data;
3976                        len = fw_entry->size;
3977                }
3978
3979                if (len <= 0x6000) {
3980                        atmel_write16(priv->dev, BSR, BSS_IRAM);
3981                        atmel_copy_to_card(priv->dev, 0, fw, len);
3982                        atmel_set_gcr(priv->dev, GCR_REMAP);
3983                } else {
3984                        /* Remap */
3985                        atmel_set_gcr(priv->dev, GCR_REMAP);
3986                        atmel_write16(priv->dev, BSR, BSS_IRAM);
3987                        atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3988                        atmel_write16(priv->dev, BSR, 0x2ff);
3989                        atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3990                }
3991
3992                if (fw_entry)
3993                        release_firmware(fw_entry);
3994        }
3995
3996        err = atmel_wakeup_firmware(priv);
3997        if (err != 0)
3998                return err;
3999
4000        /* Check the version and set the correct flag for wpa stuff,

4001           old and new firmware is incompatible.
4002           The pre-wpa 3com firmware reports major version 5,
4003           the wpa 3com firmware is major version 4 and doesn't need
4004           the 3com broken-ness filter. */
4005        priv->use_wpa = (priv->host_info.major_version == 4);
4006        priv->radio_on_broken = (priv->host_info.major_version == 5);
4007
4008        /* unmask all irq sources */
4009        atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
4010
4011        /* int Tx system and enable Tx */
4012        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4013        atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4014        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4015        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4016
4017        priv->tx_desc_free = priv->host_info.tx_desc_count;
4018        priv->tx_desc_head = 0;
4019        priv->tx_desc_tail = 0;
4020        priv->tx_desc_previous = 0;
4021        priv->tx_free_mem = priv->host_info.tx_buff_size;
4022        priv->tx_buff_head = 0;
4023        priv->tx_buff_tail = 0;
4024
4025        configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4026        atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4027                                   configuration | FUNC_CTRL_TxENABLE);
4028
4029        /* init Rx system and enable */
4030        priv->rx_desc_head = 0;
4031
4032        configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4033        atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4034                                   configuration | FUNC_CTRL_RxENABLE);
4035
4036        if (!priv->radio_on_broken) {
4037                if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4038                    CMD_STATUS_REJECTED_RADIO_OFF) {
4039                        printk(KERN_INFO "%s: cannot turn the radio on.\n",
4040                               dev->name);
4041                        return -EIO;
4042                }
4043        }
4044
4045        /* set up enough MIB values to run. */
4046        atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4047        atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4048        atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4049        atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4050        atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4051        atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4052        atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4053        atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4054                      priv->dev->dev_addr, 6);
4055        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4056        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4057        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4058        atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4059        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4060        if (priv->use_wpa)
4061                build_wpa_mib(priv);
4062        else
4063                build_wep_mib(priv);
4064
4065        if (old_state == STATION_STATE_READY) {
4066                union iwreq_data wrqu;
4067
4068                wrqu.data.length = 0;
4069                wrqu.data.flags = 0;
4070                wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4071                memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4072                wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4073        }
4074
4075        return 0;
4076}
4077
4078static void atmel_send_command(struct atmel_private *priv, int command,
4079                               void *cmd, int cmd_size)
4080{
4081        if (cmd)
4082                atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4083                                   cmd, cmd_size);
4084
4085        atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4086        atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4087}
4088
4089static int atmel_send_command_wait(struct atmel_private *priv, int command,
4090                                   void *cmd, int cmd_size)
4091{
4092        int i, status;
4093
4094        atmel_send_command(priv, command, cmd, cmd_size);
4095
4096        for (i = 5000; i; i--) {
4097                status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4098                if (status != CMD_STATUS_IDLE &&
4099                    status != CMD_STATUS_IN_PROGRESS)
4100                        break;
4101                udelay(20);
4102        }
4103
4104        if (i == 0) {
4105                printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4106                status =  CMD_STATUS_HOST_ERROR;
4107        } else {
4108                if (command != CMD_EnableRadio)
4109                        status = CMD_STATUS_COMPLETE;
4110        }
4111
4112        return status;
4113}
4114
4115static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4116{
4117        struct get_set_mib m;
4118        m.type = type;
4119        m.size = 1;
4120        m.index = index;
4121
4122        atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4123        return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4124}
4125
4126static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4127{
4128        struct get_set_mib m;
4129        m.type = type;
4130        m.size = 1;
4131        m.index = index;
4132        m.data[0] = data;
4133
4134        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4135}
4136
4137static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4138                            u16 data)
4139{
4140        struct get_set_mib m;
4141        m.type = type;
4142        m.size = 2;
4143        m.index = index;
4144        m.data[0] = data;
4145        m.data[1] = data >> 8;
4146
4147        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4148}
4149
4150static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4151                          u8 *data, int data_len)
4152{
4153        struct get_set_mib m;
4154        m.type = type;
4155        m.size = data_len;
4156        m.index = index;
4157
4158        if (data_len > MIB_MAX_DATA_BYTES)
4159                printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4160
4161        memcpy(m.data, data, data_len);
4162        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4163}
4164
4165static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4166                          u8 *data, int data_len)
4167{
4168        struct get_set_mib m;
4169        m.type = type;
4170        m.size = data_len;
4171        m.index = index;
4172
4173        if (data_len > MIB_MAX_DATA_BYTES)
4174                printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4175
4176        atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4177        atmel_copy_to_host(priv->dev, data,
4178                           atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4179}
4180
4181static void atmel_writeAR(struct net_device *dev, u16 data)
4182{
4183        int i;
4184        outw(data, dev->base_addr + AR);
4185        /* Address register appears to need some convincing..... */
4186        for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4187                outw(data, dev->base_addr + AR);
4188}
4189
4190static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4191                               const unsigned char *src, u16 len)
4192{
4193        int i;
4194        atmel_writeAR(dev, dest);
4195        if (dest % 2) {
4196                atmel_write8(dev, DR, *src);
4197                src++; len--;
4198        }
4199        for (i = len; i > 1 ; i -= 2) {
4200                u8 lb = *src++;
4201                u8 hb = *src++;
4202                atmel_write16(dev, DR, lb | (hb << 8));
4203        }
4204        if (i)
4205                atmel_write8(dev, DR, *src);
4206}
4207
4208static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4209                               u16 src, u16 len)
4210{
4211        int i;
4212        atmel_writeAR(dev, src);
4213        if (src % 2) {
4214                *dest = atmel_read8(dev, DR);
4215                dest++; len--;
4216        }
4217        for (i = len; i > 1 ; i -= 2) {
4218                u16 hw = atmel_read16(dev, DR);
4219                *dest++ = hw;
4220                *dest++ = hw >> 8;
4221        }
4222        if (i)
4223                *dest = atmel_read8(dev, DR);
4224}
4225
4226static void atmel_set_gcr(struct net_device *dev, u16 mask)
4227{
4228        outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4229}
4230
4231static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4232{
4233        outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4234}
4235
4236static int atmel_lock_mac(struct atmel_private *priv)
4237{
4238        int i, j = 20;
4239 retry:
4240        for (i = 5000; i; i--) {
4241                if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4242                        break;
4243                udelay(20);
4244        }
4245
4246        if (!i)
4247                return 0; /* timed out */
4248
4249        atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4250        if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4251                atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4252                if (!j--)
4253                        return 0; /* timed out */
4254                goto retry;
4255        }
4256
4257        return 1;
4258}
4259
4260static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4261{
4262        atmel_writeAR(priv->dev, pos);
4263        atmel_write16(priv->dev, DR, data); /* card is little-endian */
4264        atmel_write16(priv->dev, DR, data >> 16);
4265}
4266
4267/***************************************************************************/
4268/* There follows the source form of the MAC address reading firmware       */
4269/***************************************************************************/
4270#if 0
4271
4272/* Copyright 2003 Matthew T. Russotto                                      */
4273/* But derived from the Atmel 76C502 firmware written by Atmel and         */
4274/* included in "atmel wireless lan drivers" package                        */
4275/**
4276    This file is part of net.russotto.AtmelMACFW, hereto referred to
4277    as AtmelMACFW
4278
4279    AtmelMACFW is free software; you can redistribute it and/or modify
4280    it under the terms of the GNU General Public License version 2
4281    as published by the Free Software Foundation.
4282
4283    AtmelMACFW is distributed in the hope that it will be useful,
4284    but WITHOUT ANY WARRANTY; without even the implied warranty of
4285    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4286    GNU General Public License for more details.
4287
4288    You should have received a copy of the GNU General Public License
4289    along with AtmelMACFW; if not, write to the Free Software
4290    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4291
4292****************************************************************************/
4293/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4294/* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4295/* It only works on SPI EEPROM versions of the card.                       */
4296
4297/* This firmware initializes the SPI controller and clock, reads the MAC   */
4298/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4299/* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4300/* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4301/* MR4, for investigational purposes (maybe we can determine chip type     */
4302/* from that?)                                                             */
4303
4304        .org 0
4305    .set MRBASE, 0x8000000
4306        .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4307        .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4308        .set SRAM_BASE,  0x02000000
4309        .set SP_BASE,    0x0F300000
4310        .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4311        .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4312        .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4313        .set STACK_BASE, 0x5600
4314        .set SP_SR, 0x10
4315        .set SP_TDRE, 2 /* status register bit -- TDR empty */
4316        .set SP_RDRF, 1 /* status register bit -- RDR full */
4317        .set SP_SWRST, 0x80
4318        .set SP_SPIEN, 0x1
4319        .set SP_CR, 0   /* control register */
4320        .set SP_MR, 4   /* mode register */
4321        .set SP_RDR, 0x08 /* Read Data Register */
4322        .set SP_TDR, 0x0C /* Transmit Data Register */
4323        .set SP_CSR0, 0x30 /* chip select registers */
4324        .set SP_CSR1, 0x34
4325        .set SP_CSR2, 0x38
4326        .set SP_CSR3, 0x3C
4327        .set NVRAM_CMD_RDSR, 5 /* read status register */
4328        .set NVRAM_CMD_READ, 3 /* read data */
4329        .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4330        .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4331                                  serial output, since SO is normally high.  But it
4332                                  does cause 8 clock cycles and thus 8 bits to be
4333                                  clocked in to the chip.  See Atmel's SPI
4334                                  controller (e.g. AT91M55800) timing and 4K
4335                                  SPI EEPROM manuals */
4336
4337        .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4338        .set NVRAM_IMAGE, 0x02000200
4339        .set NVRAM_LENGTH, 0x0200
4340        .set MAC_ADDRESS_MIB, SRAM_BASE
4341        .set MAC_ADDRESS_LENGTH, 6
4342        .set MAC_BOOT_FLAG, 0x10
4343        .set MR1, 0
4344        .set MR2, 4
4345        .set MR3, 8
4346        .set MR4, 0xC
4347RESET_VECTOR:
4348        b RESET_HANDLER
4349UNDEF_VECTOR:
4350        b HALT1
4351SWI_VECTOR:
4352        b HALT1
4353IABORT_VECTOR:
4354        b HALT1
4355DABORT_VECTOR:
4356RESERVED_VECTOR:
4357        b HALT1
4358IRQ_VECTOR:
4359        b HALT1
4360FIQ_VECTOR:
4361        b HALT1
4362HALT1:  b HALT1
4363RESET_HANDLER:
4364        mov     r0, #CPSR_INITIAL
4365        msr     CPSR_c, r0      /* This is probably unnecessary */
4366
4367/* I'm guessing this is initializing clock generator electronics for SPI */
4368        ldr     r0, =SPI_CGEN_BASE
4369        mov     r1, #0
4370        mov     r1, r1, lsl #3
4371        orr     r1, r1, #0
4372        str     r1, [r0]
4373        ldr     r1, [r0, #28]
4374        bic     r1, r1, #16
4375        str     r1, [r0, #28]
4376        mov     r1, #1
4377        str     r1, [r0, #8]
4378
4379        ldr     r0, =MRBASE
4380        mov     r1, #0
4381        strh    r1, [r0, #MR1]
4382        strh    r1, [r0, #MR2]
4383        strh    r1, [r0, #MR3]
4384        strh    r1, [r0, #MR4]
4385
4386        mov     sp, #STACK_BASE
4387        bl      SP_INIT
4388        mov     r0, #10
4389        bl      DELAY9
4390        bl      GET_MAC_ADDR
4391        bl      GET_WHOLE_NVRAM
4392        ldr     r0, =MRBASE
4393        ldr     r1, =MAC_ADDRESS_MIB
4394        strh    r1, [r0, #MR2]
4395        ldr     r1, =NVRAM_IMAGE
4396        strh    r1, [r0, #MR4]
4397        mov     r1, #MAC_BOOT_FLAG
4398        strh    r1, [r0, #MR3]
4399HALT2:  b HALT2
4400.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4401GET_WHOLE_NVRAM:
4402        stmdb   sp!, {lr}
4403        mov     r2, #0 /* 0th bytes of NVRAM */
4404        mov     r3, #NVRAM_LENGTH
4405        mov     r1, #0          /* not used in routine */
4406        ldr     r0, =NVRAM_IMAGE
4407        bl      NVRAM_XFER
4408        ldmia   sp!, {lr}
4409        bx      lr
4410.endfunc
4411
4412.func Get_MAC_Addr, GET_MAC_ADDR
4413GET_MAC_ADDR:
4414        stmdb   sp!, {lr}
4415        mov     r2, #0x120      /* address of MAC Address within NVRAM */
4416        mov     r3, #MAC_ADDRESS_LENGTH
4417        mov     r1, #0          /* not used in routine */
4418        ldr     r0, =MAC_ADDRESS_MIB
4419        bl      NVRAM_XFER
4420        ldmia   sp!, {lr}
4421        bx      lr
4422.endfunc
4423.ltorg
4424.func Delay9, DELAY9
4425DELAY9:
4426        adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4427DELAYLOOP:
4428        beq     DELAY9_done
4429        subs    r0, r0, #1
4430        b       DELAYLOOP
4431DELAY9_done:
4432        bx      lr
4433.endfunc
4434
4435.func SP_Init, SP_INIT
4436SP_INIT:
4437        mov     r1, #SP_SWRST
4438        ldr     r0, =SP_BASE
4439        str     r1, [r0, #SP_CR] /* reset the SPI */
4440        mov     r1, #0
4441        str     r1, [r0, #SP_CR] /* release SPI from reset state */
4442        mov     r1, #SP_SPIEN
4443        str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4444        str     r1, [r0, #SP_CR] /* enable the SPI */
4445
4446/*  My guess would be this turns on the SPI clock */
4447        ldr     r3, =SPI_CGEN_BASE
4448        ldr     r1, [r3, #28]
4449        orr     r1, r1, #0x2000
4450        str     r1, [r3, #28]
4451
4452        ldr     r1, =0x2000c01
4453        str     r1, [r0, #SP_CSR0]
4454        ldr     r1, =0x2000201
4455        str     r1, [r0, #SP_CSR1]
4456        str     r1, [r0, #SP_CSR2]
4457        str     r1, [r0, #SP_CSR3]
4458        ldr     r1, [r0, #SP_SR]
4459        ldr     r0, [r0, #SP_RDR]
4460        bx      lr
4461.endfunc
4462.func NVRAM_Init, NVRAM_INIT
4463NVRAM_INIT:
4464        ldr     r1, =SP_BASE
4465        ldr     r0, [r1, #SP_RDR]
4466        mov     r0, #NVRAM_CMD_RDSR
4467        str     r0, [r1, #SP_TDR]
4468SP_loop1:
4469        ldr     r0, [r1, #SP_SR]
4470        tst     r0, #SP_TDRE
4471        beq     SP_loop1
4472
4473        mov     r0, #SPI_8CLOCKS
4474        str     r0, [r1, #SP_TDR]
4475SP_loop2:
4476        ldr     r0, [r1, #SP_SR]
4477        tst     r0, #SP_TDRE
4478        beq     SP_loop2
4479
4480        ldr     r0, [r1, #SP_RDR]
4481SP_loop3:
4482        ldr     r0, [r1, #SP_SR]
4483        tst     r0, #SP_RDRF
4484        beq     SP_loop3
4485
4486        ldr     r0, [r1, #SP_RDR]
4487        and     r0, r0, #255
4488        bx      lr
4489.endfunc
4490
4491.func NVRAM_Xfer, NVRAM_XFER
4492        /* r0 = dest address */
4493        /* r1 = not used */
4494        /* r2 = src address within NVRAM */
4495        /* r3 = length */
4496NVRAM_XFER:
4497        stmdb   sp!, {r4, r5, lr}
4498        mov     r5, r0          /* save r0 (dest address) */
4499        mov     r4, r3          /* save r3 (length) */
4500        mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4501        and     r0, r0, #8
4502        add     r0, r0, #NVRAM_CMD_READ
4503        ldr     r1, =NVRAM_SCRATCH
4504        strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4505        strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4506_local1:
4507        bl      NVRAM_INIT
4508        tst     r0, #NVRAM_SR_RDY
4509        bne     _local1
4510        mov     r0, #20
4511        bl      DELAY9
4512        mov     r2, r4          /* length */
4513        mov     r1, r5          /* dest address */
4514        mov     r0, #2          /* bytes to transfer in command */
4515        bl      NVRAM_XFER2
4516        ldmia   sp!, {r4, r5, lr}
4517        bx      lr
4518.endfunc
4519
4520.func NVRAM_Xfer2, NVRAM_XFER2
4521NVRAM_XFER2:
4522        stmdb   sp!, {r4, r5, r6, lr}
4523        ldr     r4, =SP_BASE
4524        mov     r3, #0
4525        cmp     r0, #0
4526        bls     _local2
4527        ldr     r5, =NVRAM_SCRATCH
4528_local4:
4529        ldrb    r6, [r5, r3]
4530        str     r6, [r4, #SP_TDR]
4531_local3:
4532        ldr     r6, [r4, #SP_SR]
4533        tst     r6, #SP_TDRE
4534        beq     _local3
4535        add     r3, r3, #1
4536        cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4537        blo     _local4
4538_local2:
4539        mov     r3, #SPI_8CLOCKS
4540        str     r3, [r4, #SP_TDR]
4541        ldr     r0, [r4, #SP_RDR]
4542_local5:
4543        ldr     r0, [r4, #SP_SR]
4544        tst     r0, #SP_RDRF
4545        beq     _local5
4546        ldr     r0, [r4, #SP_RDR] /* what's this byte?  It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
4547        mov     r0, #0
4548        cmp     r2, #0  /* r2 is # of bytes to copy in */
4549        bls     _local6
4550_local7:
4551        ldr     r5, [r4, #SP_SR]
4552        tst     r5, #SP_TDRE
4553        beq     _local7
4554        str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4555_local8:
4556        ldr     r5, [r4, #SP_SR]
4557        tst     r5, #SP_RDRF
4558        beq     _local8
4559        ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4560        strb    r5, [r1], #1 /* postindexed */
4561        add     r0, r0, #1
4562        cmp     r0, r2
4563        blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4564_local6:
4565        mov     r0, #200
4566        bl      DELAY9
4567        ldmia   sp!, {r4, r5, r6, lr}
4568        bx      lr
4569#endif
4570