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
  44#include <linux/kernel.h>
  45#include <linux/ptrace.h>
  46#include <linux/slab.h>
  47#include <linux/string.h>
  48#include <linux/ctype.h>
  49#include <linux/timer.h>
  50#include <asm/byteorder.h>
  51#include <asm/io.h>
  52#include <asm/system.h>
  53#include <asm/uaccess.h>
  54#include <linux/module.h>
  55#include <linux/netdevice.h>
  56#include <linux/etherdevice.h>
  57#include <linux/skbuff.h>
  58#include <linux/if_arp.h>
  59#include <linux/ioport.h>
  60#include <linux/fcntl.h>
  61#include <linux/delay.h>
  62#include <linux/wireless.h>
  63#include <net/iw_handler.h>
  64#include <linux/crc32.h>
  65#include <linux/proc_fs.h>
  66#include <linux/device.h>
  67#include <linux/moduleparam.h>
  68#include <linux/firmware.h>
  69#include <linux/jiffies.h>
  70#include <linux/ieee80211.h>
  71#include "atmel.h"
  72
  73#define DRIVER_MAJOR 0
  74#define DRIVER_MINOR 98
  75
  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 stucture varies for PCcard */
 443        int (*present_callback)(void *); /* And callback which uses it */
 444        char firmware_id[32];
 445        AtmelFWType firmware_type;
 446        u8 *firmware;
 447        int firmware_length;
 448        struct timer_list management_timer;
 449        struct net_device *dev;
 450        struct device *sys_dev;
 451        struct iw_statistics wstats;
 452        spinlock_t irqlock, timerlock;  /* spinlocks */
 453        enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 454        enum {
 455                CARD_TYPE_PARALLEL_FLASH,
 456                CARD_TYPE_SPI_FLASH,
 457                CARD_TYPE_EEPROM
 458        } card_type;
 459        int do_rx_crc; /* If we need to CRC incoming packets */
 460        int probe_crc; /* set if we don't yet know */
 461        int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 462        u16 rx_desc_head;
 463        u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 464        u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 465
 466        u16 frag_seq, frag_len, frag_no;
 467        u8 frag_source[6];
 468
 469        u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 470        u8 group_cipher_suite, pairwise_cipher_suite;
 471        u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 472        int wep_key_len[MAX_ENCRYPTION_KEYS];
 473        int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 474
 475        u16 host_info_base;
 476        struct host_info_struct {
 477                /* NB this is matched to the hardware, don't change. */
 478                u8 volatile int_status;
 479                u8 volatile int_mask;
 480                u8 volatile lockout_host;
 481                u8 volatile lockout_mac;
 482
 483                u16 tx_buff_pos;
 484                u16 tx_buff_size;
 485                u16 tx_desc_pos;
 486                u16 tx_desc_count;
 487
 488                u16 rx_buff_pos;
 489                u16 rx_buff_size;
 490                u16 rx_desc_pos;
 491                u16 rx_desc_count;
 492
 493                u16 build_version;
 494                u16 command_pos;
 495
 496                u16 major_version;
 497                u16 minor_version;
 498
 499                u16 func_ctrl;
 500                u16 mac_status;
 501                u16 generic_IRQ_type;
 502                u8  reserved[2];
 503        } host_info;
 504
 505        enum {
 506                STATION_STATE_SCANNING,
 507                STATION_STATE_JOINNING,
 508                STATION_STATE_AUTHENTICATING,
 509                STATION_STATE_ASSOCIATING,
 510                STATION_STATE_READY,
 511                STATION_STATE_REASSOCIATING,
 512                STATION_STATE_DOWN,
 513                STATION_STATE_MGMT_ERROR
 514        } station_state;
 515
 516        int operating_mode, power_mode;
 517        time_t last_qual;
 518        int beacons_this_sec;
 519        int channel;
 520        int reg_domain, config_reg_domain;
 521        int tx_rate;
 522        int auto_tx_rate;
 523        int rts_threshold;
 524        int frag_threshold;
 525        int long_retry, short_retry;
 526        int preamble;
 527        int default_beacon_period, beacon_period, listen_interval;
 528        int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 529        int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 530        enum {
 531                SITE_SURVEY_IDLE,
 532                SITE_SURVEY_IN_PROGRESS,
 533                SITE_SURVEY_COMPLETED
 534        } site_survey_state;
 535        unsigned long last_survey;
 536
 537        int station_was_associated, station_is_associated;
 538        int fast_scan;
 539
 540        struct bss_info {
 541                int channel;
 542                int SSIDsize;
 543                int RSSI;
 544                int UsingWEP;
 545                int preamble;
 546                int beacon_period;
 547                int BSStype;
 548                u8 BSSID[6];
 549                u8 SSID[MAX_SSID_LENGTH];
 550        } BSSinfo[MAX_BSS_ENTRIES];
 551        int BSS_list_entries, current_BSS;
 552        int connect_to_any_BSS;
 553        int SSID_size, new_SSID_size;
 554        u8 CurrentBSSID[6], BSSID[6];
 555        u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 556        u64 last_beacon_timestamp;
 557        u8 rx_buf[MAX_WIRELESS_BODY];
 558};
 559
 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                printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1537                return NULL;
1538        }
1539        if (dev_alloc_name(dev, dev->name) < 0) {
1540                printk(KERN_ERR "atmel: Couldn't get name!\n");
1541                goto err_out_free;
1542        }
1543
1544        priv = netdev_priv(dev);
1545        priv->dev = dev;
1546        priv->sys_dev = sys_dev;
1547        priv->present_callback = card_present;
1548        priv->card = card;
1549        priv->firmware = NULL;
1550        priv->firmware_id[0] = '\0';
1551        priv->firmware_type = fw_type;
1552        if (firmware) /* module parameter */
1553                strcpy(priv->firmware_id, firmware);
1554        priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1555        priv->station_state = STATION_STATE_DOWN;
1556        priv->do_rx_crc = 0;
1557        /* For PCMCIA cards, some chips need CRC, some don't
1558           so we have to probe. */
1559        if (priv->bus_type == BUS_TYPE_PCCARD) {
1560                priv->probe_crc = 1;
1561                priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1562        } else
1563                priv->probe_crc = 0;
1564        priv->last_qual = jiffies;
1565        priv->last_beacon_timestamp = 0;
1566        memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1567        memset(priv->BSSID, 0, 6);
1568        priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1569        priv->station_was_associated = 0;
1570
1571        priv->last_survey = jiffies;
1572        priv->preamble = LONG_PREAMBLE;
1573        priv->operating_mode = IW_MODE_INFRA;
1574        priv->connect_to_any_BSS = 0;
1575        priv->config_reg_domain = 0;
1576        priv->reg_domain = 0;
1577        priv->tx_rate = 3;
1578        priv->auto_tx_rate = 1;
1579        priv->channel = 4;
1580        priv->power_mode = 0;
1581        priv->SSID[0] = '\0';
1582        priv->SSID_size = 0;
1583        priv->new_SSID_size = 0;
1584        priv->frag_threshold = 2346;
1585        priv->rts_threshold = 2347;
1586        priv->short_retry = 7;
1587        priv->long_retry = 4;
1588
1589        priv->wep_is_on = 0;
1590        priv->default_key = 0;
1591        priv->encryption_level = 0;
1592        priv->exclude_unencrypted = 0;
1593        priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1594        priv->use_wpa = 0;
1595        memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1596        memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1597
1598        priv->default_beacon_period = priv->beacon_period = 100;
1599        priv->listen_interval = 1;
1600
1601        init_timer(&priv->management_timer);
1602        spin_lock_init(&priv->irqlock);
1603        spin_lock_init(&priv->timerlock);
1604        priv->management_timer.function = atmel_management_timer;
1605        priv->management_timer.data = (unsigned long) dev;
1606
1607        dev->netdev_ops = &atmel_netdev_ops;
1608        dev->wireless_handlers = &atmel_handler_def;
1609        dev->irq = irq;
1610        dev->base_addr = port;
1611
1612        SET_NETDEV_DEV(dev, sys_dev);
1613
1614        if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1615                printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1616                goto err_out_free;
1617        }
1618
1619        if (!request_region(dev->base_addr, 32,
1620                            priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1621                goto err_out_irq;
1622        }
1623
1624        if (register_netdev(dev))
1625                goto err_out_res;
1626
1627        if (!probe_atmel_card(dev)) {
1628                unregister_netdev(dev);
1629                goto err_out_res;
1630        }
1631
1632        netif_carrier_off(dev);
1633
1634        ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1635        if (!ent)
1636                printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1637
1638        printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1639               dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1640
1641        return dev;
1642
1643err_out_res:
1644        release_region(dev->base_addr, 32);
1645err_out_irq:
1646        free_irq(dev->irq, dev);
1647err_out_free:
1648        free_netdev(dev);
1649        return NULL;
1650}
1651
1652EXPORT_SYMBOL(init_atmel_card);
1653
1654void stop_atmel_card(struct net_device *dev)
1655{
1656        struct atmel_private *priv = netdev_priv(dev);
1657
1658        /* put a brick on it... */
1659        if (priv->bus_type == BUS_TYPE_PCCARD)
1660                atmel_write16(dev, GCR, 0x0060);
1661        atmel_write16(dev, GCR, 0x0040);
1662
1663        del_timer_sync(&priv->management_timer);
1664        unregister_netdev(dev);
1665        remove_proc_entry("driver/atmel", NULL);
1666        free_irq(dev->irq, dev);
1667        kfree(priv->firmware);
1668        release_region(dev->base_addr, 32);
1669        free_netdev(dev);
1670}
1671
1672EXPORT_SYMBOL(stop_atmel_card);
1673
1674static int atmel_set_essid(struct net_device *dev,
1675                           struct iw_request_info *info,
1676                           struct iw_point *dwrq,
1677                           char *extra)
1678{
1679        struct atmel_private *priv = netdev_priv(dev);
1680
1681        /* Check if we asked for `any' */
1682        if (dwrq->flags == 0) {
1683                priv->connect_to_any_BSS = 1;
1684        } else {
1685                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1686
1687                priv->connect_to_any_BSS = 0;
1688
1689                /* Check the size of the string */
1690                if (dwrq->length > MAX_SSID_LENGTH)
1691                         return -E2BIG;
1692                if (index != 0)
1693                        return -EINVAL;
1694
1695                memcpy(priv->new_SSID, extra, dwrq->length);
1696                priv->new_SSID_size = dwrq->length;
1697        }
1698
1699        return -EINPROGRESS;
1700}
1701
1702static int atmel_get_essid(struct net_device *dev,
1703                           struct iw_request_info *info,
1704                           struct iw_point *dwrq,
1705                           char *extra)
1706{
1707        struct atmel_private *priv = netdev_priv(dev);
1708
1709        /* Get the current SSID */
1710        if (priv->new_SSID_size != 0) {
1711                memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1712                dwrq->length = priv->new_SSID_size;
1713        } else {
1714                memcpy(extra, priv->SSID, priv->SSID_size);
1715                dwrq->length = priv->SSID_size;
1716        }
1717
1718        dwrq->flags = !priv->connect_to_any_BSS; /* active */
1719
1720        return 0;
1721}
1722
1723static int atmel_get_wap(struct net_device *dev,
1724                         struct iw_request_info *info,
1725                         struct sockaddr *awrq,
1726                         char *extra)
1727{
1728        struct atmel_private *priv = netdev_priv(dev);
1729        memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1730        awrq->sa_family = ARPHRD_ETHER;
1731
1732        return 0;
1733}
1734
1735static int atmel_set_encode(struct net_device *dev,
1736                            struct iw_request_info *info,
1737                            struct iw_point *dwrq,
1738                            char *extra)
1739{
1740        struct atmel_private *priv = netdev_priv(dev);
1741
1742        /* Basic checking: do we have a key to set ?
1743         * Note : with the new API, it's impossible to get a NULL pointer.
1744         * Therefore, we need to check a key size == 0 instead.
1745         * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1746         * when no key is present (only change flags), but older versions
1747         * don't do it. - Jean II */
1748        if (dwrq->length > 0) {
1749                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1750                int current_index = priv->default_key;
1751                /* Check the size of the key */
1752                if (dwrq->length > 13) {
1753                        return -EINVAL;
1754                }
1755                /* Check the index (none -> use current) */
1756                if (index < 0 || index >= 4)
1757                        index = current_index;
1758                else
1759                        priv->default_key = index;
1760                /* Set the length */
1761                if (dwrq->length > 5)
1762                        priv->wep_key_len[index] = 13;
1763                else
1764                        if (dwrq->length > 0)
1765                                priv->wep_key_len[index] = 5;
1766                        else
1767                                /* Disable the key */
1768                                priv->wep_key_len[index] = 0;
1769                /* Check if the key is not marked as invalid */
1770                if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1771                        /* Cleanup */
1772                        memset(priv->wep_keys[index], 0, 13);
1773                        /* Copy the key in the driver */
1774                        memcpy(priv->wep_keys[index], extra, dwrq->length);
1775                }
1776                /* WE specify that if a valid key is set, encryption
1777                 * should be enabled (user may turn it off later)
1778                 * This is also how "iwconfig ethX key on" works */
1779                if (index == current_index &&
1780                    priv->wep_key_len[index] > 0) {
1781                        priv->wep_is_on = 1;
1782                        priv->exclude_unencrypted = 1;
1783                        if (priv->wep_key_len[index] > 5) {
1784                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1785                                priv->encryption_level = 2;
1786                        } else {
1787                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1788                                priv->encryption_level = 1;
1789                        }
1790                }
1791        } else {
1792                /* Do we want to just set the transmit key index ? */
1793                int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1794                if (index >= 0 && index < 4) {
1795                        priv->default_key = index;
1796                } else
1797                        /* Don't complain if only change the mode */
1798                        if (!(dwrq->flags & IW_ENCODE_MODE))
1799                                return -EINVAL;
1800        }
1801        /* Read the flags */
1802        if (dwrq->flags & IW_ENCODE_DISABLED) {
1803                priv->wep_is_on = 0;
1804                priv->encryption_level = 0;
1805                priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1806        } else {
1807                priv->wep_is_on = 1;
1808                if (priv->wep_key_len[priv->default_key] > 5) {
1809                        priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1810                        priv->encryption_level = 2;
1811                } else {
1812                        priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1813                        priv->encryption_level = 1;
1814                }
1815        }
1816        if (dwrq->flags & IW_ENCODE_RESTRICTED)
1817                priv->exclude_unencrypted = 1;
1818        if (dwrq->flags & IW_ENCODE_OPEN)
1819                priv->exclude_unencrypted = 0;
1820
1821        return -EINPROGRESS;            /* Call commit handler */
1822}
1823
1824static int atmel_get_encode(struct net_device *dev,
1825                            struct iw_request_info *info,
1826                            struct iw_point *dwrq,
1827                            char *extra)
1828{
1829        struct atmel_private *priv = netdev_priv(dev);
1830        int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1831
1832        if (!priv->wep_is_on)
1833                dwrq->flags = IW_ENCODE_DISABLED;
1834        else {
1835                if (priv->exclude_unencrypted)
1836                        dwrq->flags = IW_ENCODE_RESTRICTED;
1837                else
1838                        dwrq->flags = IW_ENCODE_OPEN;
1839        }
1840                /* Which key do we want ? -1 -> tx index */
1841        if (index < 0 || index >= 4)
1842                index = priv->default_key;
1843        dwrq->flags |= index + 1;
1844        /* Copy the key to the user buffer */
1845        dwrq->length = priv->wep_key_len[index];
1846        if (dwrq->length > 16) {
1847                dwrq->length = 0;
1848        } else {
1849                memset(extra, 0, 16);
1850                memcpy(extra, priv->wep_keys[index], dwrq->length);
1851        }
1852
1853        return 0;
1854}
1855
1856static int atmel_set_encodeext(struct net_device *dev,
1857                            struct iw_request_info *info,
1858                            union iwreq_data *wrqu,
1859                            char *extra)
1860{
1861        struct atmel_private *priv = netdev_priv(dev);
1862        struct iw_point *encoding = &wrqu->encoding;
1863        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1864        int idx, key_len, alg = ext->alg, set_key = 1;
1865
1866        /* Determine and validate the key index */
1867        idx = encoding->flags & IW_ENCODE_INDEX;
1868        if (idx) {
1869                if (idx < 1 || idx > 4)
1870                        return -EINVAL;
1871                idx--;
1872        } else
1873                idx = priv->default_key;
1874
1875        if (encoding->flags & IW_ENCODE_DISABLED)
1876            alg = IW_ENCODE_ALG_NONE;
1877
1878        if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1879                priv->default_key = idx;
1880                set_key = ext->key_len > 0 ? 1 : 0;
1881        }
1882
1883        if (set_key) {
1884                /* Set the requested key first */
1885                switch (alg) {
1886                case IW_ENCODE_ALG_NONE:
1887                        priv->wep_is_on = 0;
1888                        priv->encryption_level = 0;
1889                        priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1890                        break;
1891                case IW_ENCODE_ALG_WEP:
1892                        if (ext->key_len > 5) {
1893                                priv->wep_key_len[idx] = 13;
1894                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1895                                priv->encryption_level = 2;
1896                        } else if (ext->key_len > 0) {
1897                                priv->wep_key_len[idx] = 5;
1898                                priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1899                                priv->encryption_level = 1;
1900                        } else {
1901                                return -EINVAL;
1902                        }
1903                        priv->wep_is_on = 1;
1904                        memset(priv->wep_keys[idx], 0, 13);
1905                        key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1906                        memcpy(priv->wep_keys[idx], ext->key, key_len);
1907                        break;
1908                default:
1909                        return -EINVAL;
1910                }
1911        }
1912
1913        return -EINPROGRESS;
1914}
1915
1916static int atmel_get_encodeext(struct net_device *dev,
1917                            struct iw_request_info *info,
1918                            union iwreq_data *wrqu,
1919                            char *extra)
1920{
1921        struct atmel_private *priv = netdev_priv(dev);
1922        struct iw_point *encoding = &wrqu->encoding;
1923        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1924        int idx, max_key_len;
1925
1926        max_key_len = encoding->length - sizeof(*ext);
1927        if (max_key_len < 0)
1928                return -EINVAL;
1929
1930        idx = encoding->flags & IW_ENCODE_INDEX;
1931        if (idx) {
1932                if (idx < 1 || idx > 4)
1933                        return -EINVAL;
1934                idx--;
1935        } else
1936                idx = priv->default_key;
1937
1938        encoding->flags = idx + 1;
1939        memset(ext, 0, sizeof(*ext));
1940
1941        if (!priv->wep_is_on) {
1942                ext->alg = IW_ENCODE_ALG_NONE;
1943                ext->key_len = 0;
1944                encoding->flags |= IW_ENCODE_DISABLED;
1945        } else {
1946                if (priv->encryption_level > 0)
1947                        ext->alg = IW_ENCODE_ALG_WEP;
1948                else
1949                        return -EINVAL;
1950
1951                ext->key_len = priv->wep_key_len[idx];
1952                memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1953                encoding->flags |= IW_ENCODE_ENABLED;
1954        }
1955
1956        return 0;
1957}
1958
1959static int atmel_set_auth(struct net_device *dev,
1960                               struct iw_request_info *info,
1961                               union iwreq_data *wrqu, char *extra)
1962{
1963        struct atmel_private *priv = netdev_priv(dev);
1964        struct iw_param *param = &wrqu->param;
1965
1966        switch (param->flags & IW_AUTH_INDEX) {
1967        case IW_AUTH_WPA_VERSION:
1968        case IW_AUTH_CIPHER_PAIRWISE:
1969        case IW_AUTH_CIPHER_GROUP:
1970        case IW_AUTH_KEY_MGMT:
1971        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1972        case IW_AUTH_PRIVACY_INVOKED:
1973                /*
1974                 * atmel does not use these parameters
1975                 */
1976                break;
1977
1978        case IW_AUTH_DROP_UNENCRYPTED:
1979                priv->exclude_unencrypted = param->value ? 1 : 0;
1980                break;
1981
1982        case IW_AUTH_80211_AUTH_ALG: {
1983                        if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1984                                priv->exclude_unencrypted = 1;
1985                        } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1986                                priv->exclude_unencrypted = 0;
1987                        } else
1988                                return -EINVAL;
1989                        break;
1990                }
1991
1992        case IW_AUTH_WPA_ENABLED:
1993                /* Silently accept disable of WPA */
1994                if (param->value > 0)
1995                        return -EOPNOTSUPP;
1996                break;
1997
1998        default:
1999                return -EOPNOTSUPP;
2000        }

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

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

4001        /* Check the version and set the correct flag for wpa stuff,
4002           old and new firmware is incompatible.
4003           The pre-wpa 3com firmware reports major version 5,
4004           the wpa 3com firmware is major version 4 and doesn't need
4005           the 3com broken-ness filter. */
4006        priv->use_wpa = (priv->host_info.major_version == 4);
4007        priv->radio_on_broken = (priv->host_info.major_version == 5);
4008
4009        /* unmask all irq sources */
4010        atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
4011
4012        /* int Tx system and enable Tx */
4013        atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4014        atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4015        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4016        atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4017
4018        priv->tx_desc_free = priv->host_info.tx_desc_count;
4019        priv->tx_desc_head = 0;
4020        priv->tx_desc_tail = 0;
4021        priv->tx_desc_previous = 0;
4022        priv->tx_free_mem = priv->host_info.tx_buff_size;
4023        priv->tx_buff_head = 0;
4024        priv->tx_buff_tail = 0;
4025
4026        configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4027        atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4028                                   configuration | FUNC_CTRL_TxENABLE);
4029
4030        /* init Rx system and enable */
4031        priv->rx_desc_head = 0;
4032
4033        configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4034        atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4035                                   configuration | FUNC_CTRL_RxENABLE);
4036
4037        if (!priv->radio_on_broken) {
4038                if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4039                    CMD_STATUS_REJECTED_RADIO_OFF) {
4040                        printk(KERN_INFO "%s: cannot turn the radio on.\n",
4041                               dev->name);
4042                        return -EIO;
4043                }
4044        }
4045
4046        /* set up enough MIB values to run. */
4047        atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4048        atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4049        atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4050        atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4051        atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4052        atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4053        atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4054        atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4055                      priv->dev->dev_addr, 6);
4056        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4057        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4058        atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4059        atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4060        atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4061        if (priv->use_wpa)
4062                build_wpa_mib(priv);
4063        else
4064                build_wep_mib(priv);
4065
4066        if (old_state == STATION_STATE_READY) {
4067                union iwreq_data wrqu;
4068
4069                wrqu.data.length = 0;
4070                wrqu.data.flags = 0;
4071                wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4072                memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4073                wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4074        }
4075
4076        return 0;
4077}
4078
4079static void atmel_send_command(struct atmel_private *priv, int command,
4080                               void *cmd, int cmd_size)
4081{
4082        if (cmd)
4083                atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4084                                   cmd, cmd_size);
4085
4086        atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4087        atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4088}
4089
4090static int atmel_send_command_wait(struct atmel_private *priv, int command,
4091                                   void *cmd, int cmd_size)
4092{
4093        int i, status;
4094
4095        atmel_send_command(priv, command, cmd, cmd_size);
4096
4097        for (i = 5000; i; i--) {
4098                status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4099                if (status != CMD_STATUS_IDLE &&
4100                    status != CMD_STATUS_IN_PROGRESS)
4101                        break;
4102                udelay(20);
4103        }
4104
4105        if (i == 0) {
4106                printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4107                status =  CMD_STATUS_HOST_ERROR;
4108        } else {
4109                if (command != CMD_EnableRadio)
4110                        status = CMD_STATUS_COMPLETE;
4111        }
4112
4113        return status;
4114}
4115
4116static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4117{
4118        struct get_set_mib m;
4119        m.type = type;
4120        m.size = 1;
4121        m.index = index;
4122
4123        atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4124        return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4125}
4126
4127static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4128{
4129        struct get_set_mib m;
4130        m.type = type;
4131        m.size = 1;
4132        m.index = index;
4133        m.data[0] = data;
4134
4135        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4136}
4137
4138static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4139                            u16 data)
4140{
4141        struct get_set_mib m;
4142        m.type = type;
4143        m.size = 2;
4144        m.index = index;
4145        m.data[0] = data;
4146        m.data[1] = data >> 8;
4147
4148        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4149}
4150
4151static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4152                          u8 *data, int data_len)
4153{
4154        struct get_set_mib m;
4155        m.type = type;
4156        m.size = data_len;
4157        m.index = index;
4158
4159        if (data_len > MIB_MAX_DATA_BYTES)
4160                printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4161
4162        memcpy(m.data, data, data_len);
4163        atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4164}
4165
4166static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4167                          u8 *data, int data_len)
4168{
4169        struct get_set_mib m;
4170        m.type = type;
4171        m.size = data_len;
4172        m.index = index;
4173
4174        if (data_len > MIB_MAX_DATA_BYTES)
4175                printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4176
4177        atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4178        atmel_copy_to_host(priv->dev, data,
4179                           atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4180}
4181
4182static void atmel_writeAR(struct net_device *dev, u16 data)
4183{
4184        int i;
4185        outw(data, dev->base_addr + AR);
4186        /* Address register appears to need some convincing..... */
4187        for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4188                outw(data, dev->base_addr + AR);
4189}
4190
4191static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4192                               const unsigned char *src, u16 len)
4193{
4194        int i;
4195        atmel_writeAR(dev, dest);
4196        if (dest % 2) {
4197                atmel_write8(dev, DR, *src);
4198                src++; len--;
4199        }
4200        for (i = len; i > 1 ; i -= 2) {
4201                u8 lb = *src++;
4202                u8 hb = *src++;
4203                atmel_write16(dev, DR, lb | (hb << 8));
4204        }
4205        if (i)
4206                atmel_write8(dev, DR, *src);
4207}
4208
4209static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4210                               u16 src, u16 len)
4211{
4212        int i;
4213        atmel_writeAR(dev, src);
4214        if (src % 2) {
4215                *dest = atmel_read8(dev, DR);
4216                dest++; len--;
4217        }
4218        for (i = len; i > 1 ; i -= 2) {
4219                u16 hw = atmel_read16(dev, DR);
4220                *dest++ = hw;
4221                *dest++ = hw >> 8;
4222        }
4223        if (i)
4224                *dest = atmel_read8(dev, DR);
4225}
4226
4227static void atmel_set_gcr(struct net_device *dev, u16 mask)
4228{
4229        outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4230}
4231
4232static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4233{
4234        outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4235}
4236
4237static int atmel_lock_mac(struct atmel_private *priv)
4238{
4239        int i, j = 20;
4240 retry:
4241        for (i = 5000; i; i--) {
4242                if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4243                        break;
4244                udelay(20);
4245        }
4246
4247        if (!i)
4248                return 0; /* timed out */
4249
4250        atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4251        if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4252                atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4253                if (!j--)
4254                        return 0; /* timed out */
4255                goto retry;
4256        }
4257
4258        return 1;
4259}
4260
4261static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4262{
4263        atmel_writeAR(priv->dev, pos);
4264        atmel_write16(priv->dev, DR, data); /* card is little-endian */
4265        atmel_write16(priv->dev, DR, data >> 16);
4266}
4267
4268/***************************************************************************/
4269/* There follows the source form of the MAC address reading firmware       */
4270/***************************************************************************/
4271#if 0
4272
4273/* Copyright 2003 Matthew T. Russotto                                      */
4274/* But derived from the Atmel 76C502 firmware written by Atmel and         */
4275/* included in "atmel wireless lan drivers" package                        */
4276/**
4277    This file is part of net.russotto.AtmelMACFW, hereto referred to
4278    as AtmelMACFW
4279
4280    AtmelMACFW is free software; you can redistribute it and/or modify
4281    it under the terms of the GNU General Public License version 2
4282    as published by the Free Software Foundation.
4283
4284    AtmelMACFW is distributed in the hope that it will be useful,
4285    but WITHOUT ANY WARRANTY; without even the implied warranty of
4286    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4287    GNU General Public License for more details.
4288
4289    You should have received a copy of the GNU General Public License
4290    along with AtmelMACFW; if not, write to the Free Software
4291    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4292
4293****************************************************************************/
4294/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4295/* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4296/* It only works on SPI EEPROM versions of the card.                       */
4297
4298/* This firmware initializes the SPI controller and clock, reads the MAC   */
4299/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4300/* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4301/* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4302/* MR4, for investigational purposes (maybe we can determine chip type     */
4303/* from that?)                                                             */
4304
4305        .org 0
4306    .set MRBASE, 0x8000000
4307        .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4308        .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4309        .set SRAM_BASE,  0x02000000
4310        .set SP_BASE,    0x0F300000
4311        .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4312        .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4313        .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4314        .set STACK_BASE, 0x5600
4315        .set SP_SR, 0x10
4316        .set SP_TDRE, 2 /* status register bit -- TDR empty */
4317        .set SP_RDRF, 1 /* status register bit -- RDR full */
4318        .set SP_SWRST, 0x80
4319        .set SP_SPIEN, 0x1
4320        .set SP_CR, 0   /* control register */
4321        .set SP_MR, 4   /* mode register */
4322        .set SP_RDR, 0x08 /* Read Data Register */
4323        .set SP_TDR, 0x0C /* Transmit Data Register */
4324        .set SP_CSR0, 0x30 /* chip select registers */
4325        .set SP_CSR1, 0x34
4326        .set SP_CSR2, 0x38
4327        .set SP_CSR3, 0x3C
4328        .set NVRAM_CMD_RDSR, 5 /* read status register */
4329        .set NVRAM_CMD_READ, 3 /* read data */
4330        .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4331        .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4332                                  serial output, since SO is normally high.  But it
4333                                  does cause 8 clock cycles and thus 8 bits to be
4334                                  clocked in to the chip.  See Atmel's SPI
4335                                  controller (e.g. AT91M55800) timing and 4K
4336                                  SPI EEPROM manuals */
4337
4338        .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4339        .set NVRAM_IMAGE, 0x02000200
4340        .set NVRAM_LENGTH, 0x0200
4341        .set MAC_ADDRESS_MIB, SRAM_BASE
4342        .set MAC_ADDRESS_LENGTH, 6
4343        .set MAC_BOOT_FLAG, 0x10
4344        .set MR1, 0
4345        .set MR2, 4
4346        .set MR3, 8
4347        .set MR4, 0xC
4348RESET_VECTOR:
4349        b RESET_HANDLER
4350UNDEF_VECTOR:
4351        b HALT1
4352SWI_VECTOR:
4353        b HALT1
4354IABORT_VECTOR:
4355        b HALT1
4356DABORT_VECTOR:
4357RESERVED_VECTOR:
4358        b HALT1
4359IRQ_VECTOR:
4360        b HALT1
4361FIQ_VECTOR:
4362        b HALT1
4363HALT1:  b HALT1
4364RESET_HANDLER:
4365        mov     r0, #CPSR_INITIAL
4366        msr     CPSR_c, r0      /* This is probably unnecessary */
4367
4368/* I'm guessing this is initializing clock generator electronics for SPI */
4369        ldr     r0, =SPI_CGEN_BASE
4370        mov     r1, #0
4371        mov     r1, r1, lsl #3
4372        orr     r1, r1, #0
4373        str     r1, [r0]
4374        ldr     r1, [r0, #28]
4375        bic     r1, r1, #16
4376        str     r1, [r0, #28]
4377        mov     r1, #1
4378        str     r1, [r0, #8]
4379
4380        ldr     r0, =MRBASE
4381        mov     r1, #0
4382        strh    r1, [r0, #MR1]
4383        strh    r1, [r0, #MR2]
4384        strh    r1, [r0, #MR3]
4385        strh    r1, [r0, #MR4]
4386
4387        mov     sp, #STACK_BASE
4388        bl      SP_INIT
4389        mov     r0, #10
4390        bl      DELAY9
4391        bl      GET_MAC_ADDR
4392        bl      GET_WHOLE_NVRAM
4393        ldr     r0, =MRBASE
4394        ldr     r1, =MAC_ADDRESS_MIB
4395        strh    r1, [r0, #MR2]
4396        ldr     r1, =NVRAM_IMAGE
4397        strh    r1, [r0, #MR4]
4398        mov     r1, #MAC_BOOT_FLAG
4399        strh    r1, [r0, #MR3]
4400HALT2:  b HALT2
4401.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4402GET_WHOLE_NVRAM:
4403        stmdb   sp!, {lr}
4404        mov     r2, #0 /* 0th bytes of NVRAM */
4405        mov     r3, #NVRAM_LENGTH
4406        mov     r1, #0          /* not used in routine */
4407        ldr     r0, =NVRAM_IMAGE
4408        bl      NVRAM_XFER
4409        ldmia   sp!, {lr}
4410        bx      lr
4411.endfunc
4412
4413.func Get_MAC_Addr, GET_MAC_ADDR
4414GET_MAC_ADDR:
4415        stmdb   sp!, {lr}
4416        mov     r2, #0x120      /* address of MAC Address within NVRAM */
4417        mov     r3, #MAC_ADDRESS_LENGTH
4418        mov     r1, #0          /* not used in routine */
4419        ldr     r0, =MAC_ADDRESS_MIB
4420        bl      NVRAM_XFER
4421        ldmia   sp!, {lr}
4422        bx      lr
4423.endfunc
4424.ltorg
4425.func Delay9, DELAY9
4426DELAY9:
4427        adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4428DELAYLOOP:
4429        beq     DELAY9_done
4430        subs    r0, r0, #1
4431        b       DELAYLOOP
4432DELAY9_done:
4433        bx      lr
4434.endfunc
4435
4436.func SP_Init, SP_INIT
4437SP_INIT:
4438        mov     r1, #SP_SWRST
4439        ldr     r0, =SP_BASE
4440        str     r1, [r0, #SP_CR] /* reset the SPI */
4441        mov     r1, #0
4442        str     r1, [r0, #SP_CR] /* release SPI from reset state */
4443        mov     r1, #SP_SPIEN
4444        str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4445        str     r1, [r0, #SP_CR] /* enable the SPI */
4446
4447/*  My guess would be this turns on the SPI clock */
4448        ldr     r3, =SPI_CGEN_BASE
4449        ldr     r1, [r3, #28]
4450        orr     r1, r1, #0x2000
4451        str     r1, [r3, #28]
4452
4453        ldr     r1, =0x2000c01
4454        str     r1, [r0, #SP_CSR0]
4455        ldr     r1, =0x2000201
4456        str     r1, [r0, #SP_CSR1]
4457        str     r1, [r0, #SP_CSR2]
4458        str     r1, [r0, #SP_CSR3]
4459        ldr     r1, [r0, #SP_SR]
4460        ldr     r0, [r0, #SP_RDR]
4461        bx      lr
4462.endfunc
4463.func NVRAM_Init, NVRAM_INIT
4464NVRAM_INIT:
4465        ldr     r1, =SP_BASE
4466        ldr     r0, [r1, #SP_RDR]
4467        mov     r0, #NVRAM_CMD_RDSR
4468        str     r0, [r1, #SP_TDR]
4469SP_loop1:
4470        ldr     r0, [r1, #SP_SR]
4471        tst     r0, #SP_TDRE
4472        beq     SP_loop1
4473
4474        mov     r0, #SPI_8CLOCKS
4475        str     r0, [r1, #SP_TDR]
4476SP_loop2:
4477        ldr     r0, [r1, #SP_SR]
4478        tst     r0, #SP_TDRE
4479        beq     SP_loop2
4480
4481        ldr     r0, [r1, #SP_RDR]
4482SP_loop3:
4483        ldr     r0, [r1, #SP_SR]
4484        tst     r0, #SP_RDRF
4485        beq     SP_loop3
4486
4487        ldr     r0, [r1, #SP_RDR]
4488        and     r0, r0, #255
4489        bx      lr
4490.endfunc
4491
4492.func NVRAM_Xfer, NVRAM_XFER
4493        /* r0 = dest address */
4494        /* r1 = not used */
4495        /* r2 = src address within NVRAM */
4496        /* r3 = length */
4497NVRAM_XFER:
4498        stmdb   sp!, {r4, r5, lr}
4499        mov     r5, r0          /* save r0 (dest address) */
4500        mov     r4, r3          /* save r3 (length) */
4501        mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4502        and     r0, r0, #8
4503        add     r0, r0, #NVRAM_CMD_READ
4504        ldr     r1, =NVRAM_SCRATCH
4505        strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4506        strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4507_local1:
4508        bl      NVRAM_INIT
4509        tst     r0, #NVRAM_SR_RDY
4510        bne     _local1
4511        mov     r0, #20
4512        bl      DELAY9
4513        mov     r2, r4          /* length */
4514        mov     r1, r5          /* dest address */
4515        mov     r0, #2          /* bytes to transfer in command */
4516        bl      NVRAM_XFER2
4517        ldmia   sp!, {r4, r5, lr}
4518        bx      lr
4519.endfunc
4520
4521.func NVRAM_Xfer2, NVRAM_XFER2
4522NVRAM_XFER2:
4523        stmdb   sp!, {r4, r5, r6, lr}
4524        ldr     r4, =SP_BASE
4525        mov     r3, #0
4526        cmp     r0, #0
4527        bls     _local2
4528        ldr     r5, =NVRAM_SCRATCH
4529_local4:
4530        ldrb    r6, [r5, r3]
4531        str     r6, [r4, #SP_TDR]
4532_local3:
4533        ldr     r6, [r4, #SP_SR]
4534        tst     r6, #SP_TDRE
4535        beq     _local3
4536        add     r3, r3, #1
4537        cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4538        blo     _local4
4539_local2:
4540        mov     r3, #SPI_8CLOCKS
4541        str     r3, [r4, #SP_TDR]
4542        ldr     r0, [r4, #SP_RDR]
4543_local5:
4544        ldr     r0, [r4, #SP_SR]
4545        tst     r0, #SP_RDRF
4546        beq     _local5
4547        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 */
4548        mov     r0, #0
4549        cmp     r2, #0  /* r2 is # of bytes to copy in */
4550        bls     _local6
4551_local7:
4552        ldr     r5, [r4, #SP_SR]
4553        tst     r5, #SP_TDRE
4554        beq     _local7
4555        str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4556_local8:
4557        ldr     r5, [r4, #SP_SR]
4558        tst     r5, #SP_RDRF
4559        beq     _local8
4560        ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4561        strb    r5, [r1], #1 /* postindexed */
4562        add     r0, r0, #1
4563        cmp     r0, r2
4564        blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4565_local6:
4566        mov     r0, #200
4567        bl      DELAY9
4568        ldmia   sp!, {r4, r5, r6, lr}
4569        bx      lr
4570#endif
4571