drivers/net/wireless/atmel/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, see
  32     <http://www.gnu.org/licenses/>.
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <[email protected]> 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/interrupt.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/timer.h>
  49 #include <asm/byteorder.h>
  50 #include <asm/io.h>
  51 #include <linux/uaccess.h>
  52 #include <linux/module.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/if_arp.h>
  57 #include <linux/ioport.h>
  58 #include <linux/fcntl.h>
  59 #include <linux/delay.h>
  60 #include <linux/wireless.h>
  61 #include <net/iw_handler.h>
  62 #include <linux/crc32.h>
  63 #include <linux/proc_fs.h>
  64 #include <linux/seq_file.h>
  65 #include <linux/device.h>
  66 #include <linux/moduleparam.h>
  67 #include <linux/firmware.h>
  68 #include <linux/jiffies.h>
  69 #include <net/cfg80211.h>
  70 #include "atmel.h"
  71
  72 #define DRIVER_MAJOR 0
  73 #define DRIVER_MINOR 98
  74
  75 MODULE_AUTHOR("Simon Kelley");
  76 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  77 MODULE_LICENSE("GPL");
  78 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
  79
  80 /* The name of the firmware file to be loaded
  81    over-rides any automatic selection */
  82 static char *firmware = NULL;
  83 module_param(firmware, charp, 0);
  84
  85 /* table of firmware file names */
  86 static struct {
  87         AtmelFWType fw_type;
  88         const char *fw_file;
  89         const char *fw_file_ext;
  90 } fw_table[] = {
  91         { ATMEL_FW_TYPE_502,            "atmel_at76c502",       "bin" },
  92         { ATMEL_FW_TYPE_502D,           "atmel_at76c502d",      "bin" },
  93         { ATMEL_FW_TYPE_502E,           "atmel_at76c502e",      "bin" },
  94         { ATMEL_FW_TYPE_502_3COM,       "atmel_at76c502_3com",  "bin" },
  95         { ATMEL_FW_TYPE_504,            "atmel_at76c504",       "bin" },
  96         { ATMEL_FW_TYPE_504_2958,       "atmel_at76c504_2958",  "bin" },
  97         { ATMEL_FW_TYPE_504A_2958,      "atmel_at76c504a_2958", "bin" },
  98         { ATMEL_FW_TYPE_506,            "atmel_at76c506",       "bin" },
  99         { ATMEL_FW_TYPE_NONE,           NULL,                   NULL }
 100 };
 101 MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
 102 MODULE_FIRMWARE("atmel_at76c502.bin");
 103 MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
 104 MODULE_FIRMWARE("atmel_at76c502d.bin");
 105 MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
 106 MODULE_FIRMWARE("atmel_at76c502e.bin");
 107 MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
 108 MODULE_FIRMWARE("atmel_at76c502_3com.bin");
 109 MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
 110 MODULE_FIRMWARE("atmel_at76c504.bin");
 111 MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
 112 MODULE_FIRMWARE("atmel_at76c504_2958.bin");
 113 MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
 114 MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
 115 MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
 116 MODULE_FIRMWARE("atmel_at76c506.bin");
 117
 118 #define MAX_SSID_LENGTH 32
 119 #define MGMT_JIFFIES (256 * HZ / 100)
 120
 121 #define MAX_BSS_ENTRIES 64
 122
 123 /* registers */
 124 #define GCR  0x00    /* (SIR0)  General Configuration Register */
 125 #define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
 126 #define AR   0x04
 127 #define DR   0x08
 128 #define MR1  0x12    /* Mirror Register 1 */
 129 #define MR2  0x14    /* Mirror Register 2 */
 130 #define MR3  0x16    /* Mirror Register 3 */
 131 #define MR4  0x18    /* Mirror Register 4 */
 132
 133 #define GPR1                            0x0c
 134 #define GPR2                            0x0e
 135 #define GPR3                            0x10
 136 /*
 137  * Constants for the GCR register.
 138  */
 139 #define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
 140 #define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
 141 #define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
 142 #define GCR_ENINT     0x0002          /* Enable Interrupts */
 143 #define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */
 144
 145 #define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
 146 #define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
 147 /*
 148  *Constants for the MR registers.
 149  */
 150 #define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
 151 #define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
 152 #define MAC_INIT_OK             0x0002        /* MAC boot has been completed */
 153
 154 #define MIB_MAX_DATA_BYTES    212
 155 #define MIB_HEADER_SIZE       4    /* first four fields */
 156
 157 struct get_set_mib {
 158         u8 type;
 159         u8 size;
 160         u8 index;
 161         u8 reserved;
 162         u8 data[MIB_MAX_DATA_BYTES];
 163 };
 164
 165 struct rx_desc {
 166         u32          Next;
 167         u16          MsduPos;
 168         u16          MsduSize;
 169
 170         u8           State;
 171         u8           Status;
 172         u8           Rate;
 173         u8           Rssi;
 174         u8           LinkQuality;
 175         u8           PreambleType;
 176         u16          Duration;
 177         u32          RxTime;
 178 };
 179
 180 #define RX_DESC_FLAG_VALID       0x80
 181 #define RX_DESC_FLAG_CONSUMED    0x40
 182 #define RX_DESC_FLAG_IDLE        0x00
 183
 184 #define RX_STATUS_SUCCESS        0x00
 185
 186 #define RX_DESC_MSDU_POS_OFFSET      4
 187 #define RX_DESC_MSDU_SIZE_OFFSET     6
 188 #define RX_DESC_FLAGS_OFFSET         8
 189 #define RX_DESC_STATUS_OFFSET        9
 190 #define RX_DESC_RSSI_OFFSET          11
 191 #define RX_DESC_LINK_QUALITY_OFFSET  12
 192 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 193 #define RX_DESC_DURATION_OFFSET      14
 194 #define RX_DESC_RX_TIME_OFFSET       16
 195
 196 struct tx_desc {
 197         u32       NextDescriptor;
 198         u16       TxStartOfFrame;
 199         u16       TxLength;
 200
 201         u8        TxState;
 202         u8        TxStatus;
 203         u8        RetryCount;
 204
 205         u8        TxRate;
 206
 207         u8        KeyIndex;
 208         u8        ChiperType;
 209         u8        ChipreLength;
 210         u8        Reserved1;
 211
 212         u8        Reserved;
 213         u8        PacketType;
 214         u16       HostTxLength;
 215 };
 216
 217 #define TX_DESC_NEXT_OFFSET          0
 218 #define TX_DESC_POS_OFFSET           4
 219 #define TX_DESC_SIZE_OFFSET          6
 220 #define TX_DESC_FLAGS_OFFSET         8
 221 #define TX_DESC_STATUS_OFFSET        9
 222 #define TX_DESC_RETRY_OFFSET         10
 223 #define TX_DESC_RATE_OFFSET          11
 224 #define TX_DESC_KEY_INDEX_OFFSET     12
 225 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 226 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 227 #define TX_DESC_PACKET_TYPE_OFFSET   17
 228 #define TX_DESC_HOST_LENGTH_OFFSET   18
 229
 230 /*
 231  * Host-MAC interface
 232  */
 233
 234 #define TX_STATUS_SUCCESS       0x00
 235
 236 #define TX_FIRM_OWN             0x80
 237 #define TX_DONE                 0x40
 238
 239 #define TX_ERROR                0x01
 240
 241 #define TX_PACKET_TYPE_DATA     0x01
 242 #define TX_PACKET_TYPE_MGMT     0x02
 243
 244 #define ISR_EMPTY               0x00        /* no bits set in ISR */
 245 #define ISR_TxCOMPLETE          0x01        /* packet transmitted */
 246 #define ISR_RxCOMPLETE          0x02        /* packet received */
 247 #define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
 248 #define ISR_FATAL_ERROR         0x08        /* Fatal error */
 249 #define ISR_COMMAND_COMPLETE    0x10        /* command completed */
 250 #define ISR_OUT_OF_RANGE        0x20        /* command completed */
 251 #define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
 252 #define ISR_GENERIC_IRQ         0x80
 253
 254 #define Local_Mib_Type          0x01
 255 #define Mac_Address_Mib_Type    0x02
 256 #define Mac_Mib_Type            0x03
 257 #define Statistics_Mib_Type     0x04
 258 #define Mac_Mgmt_Mib_Type       0x05
 259 #define Mac_Wep_Mib_Type        0x06
 260 #define Phy_Mib_Type            0x07
 261 #define Multi_Domain_MIB        0x08
 262
 263 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 264 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 265 #define MAC_MIB_RTS_THRESHOLD_POS             10
 266 #define MAC_MIB_SHORT_RETRY_POS               16
 267 #define MAC_MIB_LONG_RETRY_POS                17
 268 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 269 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 270 #define MAC_MGMT_MIB_STATION_ID_POS           6
 271 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 272 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 273 #define MAC_MGMT_MIB_PS_MODE_POS              53
 274 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 275 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 276 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 277 #define PHY_MIB_CHANNEL_POS                   14
 278 #define PHY_MIB_RATE_SET_POS                  20
 279 #define PHY_MIB_REG_DOMAIN_POS                26
 280 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 281 #define LOCAL_MIB_SSID_SIZE                   5
 282 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 283 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 284 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 285 #define LOCAL_MIB_PREAMBLE_TYPE               9
 286 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 287
 288 #define         CMD_Set_MIB_Vars              0x01
 289 #define         CMD_Get_MIB_Vars              0x02
 290 #define         CMD_Scan                      0x03
 291 #define         CMD_Join                      0x04
 292 #define         CMD_Start                     0x05
 293 #define         CMD_EnableRadio               0x06
 294 #define         CMD_DisableRadio              0x07
 295 #define         CMD_SiteSurvey                0x0B
 296
 297 #define         CMD_STATUS_IDLE                   0x00
 298 #define         CMD_STATUS_COMPLETE               0x01
 299 #define         CMD_STATUS_UNKNOWN                0x02
 300 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 301 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 302 #define         CMD_STATUS_TIME_OUT               0x07
 303 #define         CMD_STATUS_IN_PROGRESS            0x08
 304 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 305 #define         CMD_STATUS_HOST_ERROR             0xFF
 306 #define         CMD_STATUS_BUSY                   0xFE
 307
 308 #define CMD_BLOCK_COMMAND_OFFSET        0
 309 #define CMD_BLOCK_STATUS_OFFSET         1
 310 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 311
 312 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 313
 314 #define MGMT_FRAME_BODY_OFFSET          24
 315 #define MAX_AUTHENTICATION_RETRIES      3
 316 #define MAX_ASSOCIATION_RETRIES         3
 317
 318 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 319
 320 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 321 #define LOOP_RETRY_LIMIT   500000
 322
 323 #define ACTIVE_MODE     1
 324 #define PS_MODE         2
 325
 326 #define MAX_ENCRYPTION_KEYS 4
 327 #define MAX_ENCRYPTION_KEY_SIZE 40
 328
 329 /*
 330  * 802.11 related definitions
 331  */
 332
 333 /*
 334  * Regulatory Domains
 335  */
 336
 337 #define REG_DOMAIN_FCC          0x10    /* Channels     1-11    USA                             */
 338 #define REG_DOMAIN_DOC          0x20    /* Channel      1-11    Canada                          */
 339 #define REG_DOMAIN_ETSI         0x30    /* Channel      1-13    Europe (ex Spain/France)        */
 340 #define REG_DOMAIN_SPAIN        0x31    /* Channel      10-11   Spain                           */
 341 #define REG_DOMAIN_FRANCE       0x32    /* Channel      10-13   France                          */
 342 #define REG_DOMAIN_MKK          0x40    /* Channel      14      Japan                           */
 343 #define REG_DOMAIN_MKK1         0x41    /* Channel      1-14    Japan(MKK1)                     */
 344 #define REG_DOMAIN_ISRAEL       0x50    /* Channel      3-9     ISRAEL                          */
 345
 346 #define BSS_TYPE_AD_HOC         1
 347 #define BSS_TYPE_INFRASTRUCTURE 2
 348
 349 #define SCAN_TYPE_ACTIVE        0
 350 #define SCAN_TYPE_PASSIVE       1
 351
 352 #define LONG_PREAMBLE           0
 353 #define SHORT_PREAMBLE          1
 354 #define AUTO_PREAMBLE           2
 355
 356 #define DATA_FRAME_WS_HEADER_SIZE   30
 357
 358 /* promiscuous mode control */
 359 #define PROM_MODE_OFF                   0x0
 360 #define PROM_MODE_UNKNOWN               0x1
 361 #define PROM_MODE_CRC_FAILED            0x2
 362 #define PROM_MODE_DUPLICATED            0x4
 363 #define PROM_MODE_MGMT                  0x8
 364 #define PROM_MODE_CTRL                  0x10
 365 #define PROM_MODE_BAD_PROTOCOL          0x20
 366
 367 #define IFACE_INT_STATUS_OFFSET         0
 368 #define IFACE_INT_MASK_OFFSET           1
 369 #define IFACE_LOCKOUT_HOST_OFFSET       2
 370 #define IFACE_LOCKOUT_MAC_OFFSET        3
 371 #define IFACE_FUNC_CTRL_OFFSET          28
 372 #define IFACE_MAC_STAT_OFFSET           30
 373 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 374
 375 #define CIPHER_SUITE_NONE     0
 376 #define CIPHER_SUITE_WEP_64   1
 377 #define CIPHER_SUITE_TKIP     2
 378 #define CIPHER_SUITE_AES      3
 379 #define CIPHER_SUITE_CCX      4
 380 #define CIPHER_SUITE_WEP_128  5
 381
 382 /*
 383  * IFACE MACROS & definitions
 384  */
 385
 386 /*
 387  * FuncCtrl field:
 388  */
 389 #define FUNC_CTRL_TxENABLE              0x10
 390 #define FUNC_CTRL_RxENABLE              0x20
 391 #define FUNC_CTRL_INIT_COMPLETE         0x01
 392
 393 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 394    For copyright information and source see the end of this file. */
 395 static u8 mac_reader[] = {
 396         0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
 397         0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
 398         0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 399         0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
 400         0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
 401         0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
 402         0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
 403         0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
 404         0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
 405         0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
 406         0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 407         0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 408         0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
 409         0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
 410         0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
 411         0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
 412         0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
 413         0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
 414         0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
 415         0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
 416         0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
 417         0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
 418         0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
 419         0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 420         0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
 421         0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
 422         0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
 423         0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
 424         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
 425         0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
 426         0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
 427         0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
 428         0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
 429         0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
 430         0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
 431         0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
 432         0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
 433         0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
 434         0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
 435         0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
 436         0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
 437         0x00, 0x01, 0x00, 0x02
 438 };
 439
 440 struct atmel_private {
 441         void *card; /* Bus dependent structure varies for PCcard */
 442         int (*present_callback)(void *); /* And callback which uses it */
 443         char firmware_id[32];
 444         AtmelFWType firmware_type;
 445         u8 *firmware;
 446         int firmware_length;
 447         struct timer_list management_timer;
 448         struct net_device *dev;
 449         struct device *sys_dev;
 450         struct iw_statistics wstats;
 451         spinlock_t irqlock, timerlock;  /* spinlocks */
 452         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 453         enum {
 454                 CARD_TYPE_PARALLEL_FLASH,
 455                 CARD_TYPE_SPI_FLASH,
 456                 CARD_TYPE_EEPROM
 457         } card_type;
 458         int do_rx_crc; /* If we need to CRC incoming packets */
 459         int probe_crc; /* set if we don't yet know */
 460         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 461         u16 rx_desc_head;
 462         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 463         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 464
 465         u16 frag_seq, frag_len, frag_no;
 466         u8 frag_source[6];
 467
 468         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 469         u8 group_cipher_suite, pairwise_cipher_suite;
 470         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 471         int wep_key_len[MAX_ENCRYPTION_KEYS];
 472         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 473
 474         u16 host_info_base;
 475         struct host_info_struct {
 476                 /* NB this is matched to the hardware, don't change. */
 477                 u8 volatile int_status;
 478                 u8 volatile int_mask;
 479                 u8 volatile lockout_host;
 480                 u8 volatile lockout_mac;
 481
 482                 u16 tx_buff_pos;
 483                 u16 tx_buff_size;
 484                 u16 tx_desc_pos;
 485                 u16 tx_desc_count;
 486
 487                 u16 rx_buff_pos;
 488                 u16 rx_buff_size;
 489                 u16 rx_desc_pos;
 490                 u16 rx_desc_count;
 491
 492                 u16 build_version;
 493                 u16 command_pos;
 494
 495                 u16 major_version;
 496                 u16 minor_version;
 497
 498                 u16 func_ctrl;
 499                 u16 mac_status;
 500                 u16 generic_IRQ_type;
 501                 u8  reserved[2];
 502         } host_info;
 503
 504         enum {
 505                 STATION_STATE_SCANNING,
 506                 STATION_STATE_JOINNING,
 507                 STATION_STATE_AUTHENTICATING,
 508                 STATION_STATE_ASSOCIATING,
 509                 STATION_STATE_READY,
 510                 STATION_STATE_REASSOCIATING,
 511                 STATION_STATE_DOWN,
 512                 STATION_STATE_MGMT_ERROR
 513         } station_state;
 514
 515         int operating_mode, power_mode;
 516         unsigned long last_qual;
 517         int beacons_this_sec;
 518         int channel;
 519         int reg_domain, config_reg_domain;
 520         int tx_rate;
 521         int auto_tx_rate;
 522         int rts_threshold;
 523         int frag_threshold;
 524         int long_retry, short_retry;
 525         int preamble;
 526         int default_beacon_period, beacon_period, listen_interval;
 527         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 528         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 529         enum {
 530                 SITE_SURVEY_IDLE,
 531                 SITE_SURVEY_IN_PROGRESS,
 532                 SITE_SURVEY_COMPLETED
 533         } site_survey_state;
 534         unsigned long last_survey;
 535
 536         int station_was_associated, station_is_associated;
 537         int fast_scan;
 538
 539         struct bss_info {
 540                 int channel;
 541                 int SSIDsize;
 542                 int RSSI;
 543                 int UsingWEP;
 544                 int preamble;
 545                 int beacon_period;
 546                 int BSStype;
 547                 u8 BSSID[6];
 548                 u8 SSID[MAX_SSID_LENGTH];
 549         } BSSinfo[MAX_BSS_ENTRIES];
 550         int BSS_list_entries, current_BSS;
 551         int connect_to_any_BSS;
 552         int SSID_size, new_SSID_size;
 553         u8 CurrentBSSID[6], BSSID[6];
 554         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 555         u64 last_beacon_timestamp;
 556         u8 rx_buf[MAX_WIRELESS_BODY];
 557 };
 558
 559 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 560
 561 static const struct {
 562         int reg_domain;
 563         int min, max;
 564         char *name;
 565 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 566                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 567                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 568                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 569                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 570                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 571                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 572                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 573
 574 static void build_wpa_mib(struct atmel_private *priv);
 575 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 576 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 577                                const unsigned char *src, u16 len);
 578 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 579                                u16 src, u16 len);
 580 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 581 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 582 static int atmel_lock_mac(struct atmel_private *priv);
 583 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 584 static void atmel_command_irq(struct atmel_private *priv);
 585 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 586 static void atmel_management_frame(struct atmel_private *priv,
 587                                    struct ieee80211_hdr *header,
 588                                    u16 frame_len, u8 rssi);
 589 static void atmel_management_timer(struct timer_list *t);
 590 static void atmel_send_command(struct atmel_private *priv, int command,
 591                                void *cmd, int cmd_size);
 592 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 593                                    void *cmd, int cmd_size);
 594 static void atmel_transmit_management_frame(struct atmel_private *priv,
 595                                             struct ieee80211_hdr *header,
 596                                             u8 *body, int body_len);
 597
 598 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 599 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 600                            u8 data);
 601 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 602                             u16 data);
 603 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 604                           u8 *data, int data_len);
 605 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 606                           u8 *data, int data_len);
 607 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 608 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 609 static void atmel_smooth_qual(struct atmel_private *priv);
 610 static void atmel_writeAR(struct net_device *dev, u16 data);
 611 static int probe_atmel_card(struct net_device *dev);
 612 static int reset_atmel_card(struct net_device *dev);
 613 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 614 int atmel_open (struct net_device *dev);
 615
 616 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 617 {
 618         return priv->host_info_base + offset;
 619 }
 620
 621 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 622 {
 623         return priv->host_info.command_pos + offset;
 624 }
 625
 626 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 627 {
 628         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 629 }
 630
 631 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 632 {
 633         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 634 }
 635
 636 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 637 {
 638         return inb(dev->base_addr + offset);
 639 }
 640
 641 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 642 {
 643         outb(data, dev->base_addr + offset);
 644 }
 645
 646 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 647 {
 648         return inw(dev->base_addr + offset);
 649 }
 650
 651 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 652 {
 653         outw(data, dev->base_addr + offset);
 654 }
 655
 656 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 657 {
 658         atmel_writeAR(priv->dev, pos);
 659         return atmel_read8(priv->dev, DR);
 660 }
 661
 662 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 663 {
 664         atmel_writeAR(priv->dev, pos);
 665         atmel_write8(priv->dev, DR, data);
 666 }
 667
 668 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 669 {
 670         atmel_writeAR(priv->dev, pos);
 671         return atmel_read16(priv->dev, DR);
 672 }
 673
 674 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 675 {
 676         atmel_writeAR(priv->dev, pos);
 677         atmel_write16(priv->dev, DR, data);
 678 }
 679
 680 static const struct iw_handler_def atmel_handler_def;
 681
 682 static void tx_done_irq(struct atmel_private *priv)
 683 {
 684         int i;
 685
 686         for (i = 0;
 687              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 688                      i < priv->host_info.tx_desc_count;
 689              i++) {
 690                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 691                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 692                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 693
 694                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 695
 696                 priv->tx_free_mem += msdu_size;
 697                 priv->tx_desc_free++;
 698
 699                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 700                         priv->tx_buff_head = 0;
 701                 else
 702                         priv->tx_buff_head += msdu_size;
 703
 704                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 705                         priv->tx_desc_head++ ;
 706                 else
 707                         priv->tx_desc_head = 0;
 708
 709                 if (type == TX_PACKET_TYPE_DATA) {
 710                         if (status == TX_STATUS_SUCCESS)
 711                                 priv->dev->stats.tx_packets++;
 712                         else
 713                                 priv->dev->stats.tx_errors++;
 714                         netif_wake_queue(priv->dev);
 715                 }
 716         }
 717 }
 718
 719 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 720 {
 721         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 722
 723         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 724                 return 0;
 725
 726         if (bottom_free >= len)
 727                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 728
 729         if (priv->tx_free_mem - bottom_free >= len) {
 730                 priv->tx_buff_tail = 0;
 731                 return priv->host_info.tx_buff_pos;
 732         }
 733
 734         return 0;
 735 }
 736
 737 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 738                                  u16 len, u16 buff, u8 type)
 739 {
 740         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 741         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 742         if (!priv->use_wpa)
 743                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 744         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 745         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 746         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 747         if (priv->use_wpa) {
 748                 int cipher_type, cipher_length;
 749                 if (is_bcast) {
 750                         cipher_type = priv->group_cipher_suite;
 751                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 752                             cipher_type == CIPHER_SUITE_WEP_128)
 753                                 cipher_length = 8;
 754                         else if (cipher_type == CIPHER_SUITE_TKIP)
 755                                 cipher_length = 12;
 756                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 757                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 758                                 cipher_type = priv->pairwise_cipher_suite;
 759                                 cipher_length = 8;
 760                         } else {
 761                                 cipher_type = CIPHER_SUITE_NONE;
 762                                 cipher_length = 0;
 763                         }
 764                 } else {
 765                         cipher_type = priv->pairwise_cipher_suite;
 766                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 767                             cipher_type == CIPHER_SUITE_WEP_128)
 768                                 cipher_length = 8;
 769                         else if (cipher_type == CIPHER_SUITE_TKIP)
 770                                 cipher_length = 12;
 771                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 772                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 773                                 cipher_type = priv->group_cipher_suite;
 774                                 cipher_length = 8;
 775                         } else {
 776                                 cipher_type = CIPHER_SUITE_NONE;
 777                                 cipher_length = 0;
 778                         }
 779                 }
 780
 781                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 782                             cipher_type);
 783                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 784                             cipher_length);
 785         }
 786         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 787         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 788         if (priv->tx_desc_previous != priv->tx_desc_tail)
 789                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 790         priv->tx_desc_previous = priv->tx_desc_tail;
 791         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 792                 priv->tx_desc_tail++;
 793         else
 794                 priv->tx_desc_tail = 0;
 795         priv->tx_desc_free--;
 796         priv->tx_free_mem -= len;
 797 }
 798
 799 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 800 {
 801         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 802         struct atmel_private *priv = netdev_priv(dev);
 803         struct ieee80211_hdr header;
 804         unsigned long flags;
 805         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 806
 807         if (priv->card && priv->present_callback &&
 808             !(*priv->present_callback)(priv->card)) {
 809                 dev->stats.tx_errors++;
 810                 dev_kfree_skb(skb);
 811                 return NETDEV_TX_OK;
 812         }
 813
 814         if (priv->station_state != STATION_STATE_READY) {
 815                 dev->stats.tx_errors++;
 816                 dev_kfree_skb(skb);
 817                 return NETDEV_TX_OK;
 818         }
 819
 820         /* first ensure the timer func cannot run */
 821         spin_lock_bh(&priv->timerlock);
 822         /* then stop the hardware ISR */
 823         spin_lock_irqsave(&priv->irqlock, flags);
 824         /* nb doing the above in the opposite order will deadlock */
 825
 826         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 827            12 first bytes (containing DA/SA) and put them in the appropriate
 828            fields of the Wireless Header. Thus the packet length is then the
 829            initial + 18 (+30-12) */
 830
 831         if (!(buff = find_tx_buff(priv, len + 18))) {
 832                 dev->stats.tx_dropped++;
 833                 spin_unlock_irqrestore(&priv->irqlock, flags);
 834                 spin_unlock_bh(&priv->timerlock);
 835                 netif_stop_queue(dev);
 836                 return NETDEV_TX_BUSY;
 837         }
 838
 839         frame_ctl = IEEE80211_FTYPE_DATA;
 840         header.duration_id = 0;
 841         header.seq_ctrl = 0;
 842         if (priv->wep_is_on)
 843                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 844         if (priv->operating_mode == IW_MODE_ADHOC) {
 845                 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
 846                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 847                 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
 848         } else {
 849                 frame_ctl |= IEEE80211_FCTL_TODS;
 850                 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
 851                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 852                 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
 853         }
 854
 855         if (priv->use_wpa)
 856                 memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN);
 857
 858         header.frame_control = cpu_to_le16(frame_ctl);
 859         /* Copy the wireless header into the card */
 860         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 861         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 862         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 863         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 864
 865         /* low bit of first byte of destination tells us if broadcast */
 866         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 867         dev->stats.tx_bytes += len;
 868
 869         spin_unlock_irqrestore(&priv->irqlock, flags);
 870         spin_unlock_bh(&priv->timerlock);
 871         dev_kfree_skb(skb);
 872
 873         return NETDEV_TX_OK;
 874 }
 875
 876 static void atmel_transmit_management_frame(struct atmel_private *priv,
 877                                             struct ieee80211_hdr *header,
 878                                             u8 *body, int body_len)
 879 {
 880         u16 buff;
 881         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 882
 883         if (!(buff = find_tx_buff(priv, len)))
 884                 return;
 885
 886         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 887         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 888         priv->tx_buff_tail += len;
 889         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 890 }
 891
 892 static void fast_rx_path(struct atmel_private *priv,
 893                          struct ieee80211_hdr *header,
 894                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 895 {
 896         /* fast path: unfragmented packet copy directly into skbuf */
 897         u8 mac4[6];
 898         struct sk_buff  *skb;
 899         unsigned char *skbp;
 900
 901         /* get the final, mac 4 header field, this tells us encapsulation */
 902         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 903         msdu_size -= 6;
 904
 905         if (priv->do_rx_crc) {
 906                 crc = crc32_le(crc, mac4, 6);
 907                 msdu_size -= 4;
 908         }
 909
 910         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 911                 priv->dev->stats.rx_dropped++;
 912                 return;
 913         }
 914
 915         skb_reserve(skb, 2);
 916         skbp = skb_put(skb, msdu_size + 12);
 917         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 918
 919         if (priv->do_rx_crc) {
 920                 u32 netcrc;
 921                 crc = crc32_le(crc, skbp + 12, msdu_size);
 922                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 923                 if ((crc ^ 0xffffffff) != netcrc) {
 924                         priv->dev->stats.rx_crc_errors++;
 925                         dev_kfree_skb(skb);
 926                         return;
 927                 }
 928         }
 929
 930         memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
 931         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 932                 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
 933         else
 934                 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
 935
 936         skb->protocol = eth_type_trans(skb, priv->dev);
 937         skb->ip_summed = CHECKSUM_NONE;
 938         netif_rx(skb);
 939         priv->dev->stats.rx_bytes += 12 + msdu_size;
 940         priv->dev->stats.rx_packets++;
 941 }
 942
 943 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 944    It doesn't matter that this is slow: it is only used to proble the first few
 945    packets. */
 946 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 947 {
 948         int i = msdu_size - 4;
 949         u32 netcrc, crc = 0xffffffff;
 950
 951         if (msdu_size < 4)
 952                 return 0;
 953
 954         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 955
 956         atmel_writeAR(priv->dev, packet_loc);
 957         while (i--) {
 958                 u8 octet = atmel_read8(priv->dev, DR);
 959                 crc = crc32_le(crc, &octet, 1);
 960         }
 961
 962         return (crc ^ 0xffffffff) == netcrc;
 963 }
 964
 965 static void frag_rx_path(struct atmel_private *priv,
 966                          struct ieee80211_hdr *header,
 967                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 968                          u8 frag_no, int more_frags)
 969 {
 970         u8 mac4[ETH_ALEN];
 971         u8 source[ETH_ALEN];
 972         struct sk_buff *skb;
 973
 974         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 975                 memcpy(source, header->addr3, ETH_ALEN);
 976         else
 977                 memcpy(source, header->addr2, ETH_ALEN);
 978
 979         rx_packet_loc += 24; /* skip header */
 980
 981         if (priv->do_rx_crc)
 982                 msdu_size -= 4;
 983
 984         if (frag_no == 0) { /* first fragment */
 985                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
 986                 msdu_size -= ETH_ALEN;
 987                 rx_packet_loc += ETH_ALEN;
 988
 989                 if (priv->do_rx_crc)
 990                         crc = crc32_le(crc, mac4, 6);
 991
 992                 priv->frag_seq = seq_no;
 993                 priv->frag_no = 1;
 994                 priv->frag_len = msdu_size;
 995                 memcpy(priv->frag_source, source, ETH_ALEN);
 996                 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
 997                 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
 998
 999                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1000
1001                 if (priv->do_rx_crc) {
1002                         u32 netcrc;
1003                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1004                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1005                         if ((crc ^ 0xffffffff) != netcrc) {
1006                                 priv->dev->stats.rx_crc_errors++;
1007                                 eth_broadcast_addr(priv->frag_source);
1008                         }
1009                 }
1010
1011         } else if (priv->frag_no == frag_no &&
1012                    priv->frag_seq == seq_no &&
1013                    memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
1014
1015                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1016                                    rx_packet_loc, msdu_size);
1017                 if (priv->do_rx_crc) {
1018                         u32 netcrc;
1019                         crc = crc32_le(crc,
1020                                        &priv->rx_buf[12 + priv->frag_len],
1021                                        msdu_size);
1022                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1023                         if ((crc ^ 0xffffffff) != netcrc) {
1024                                 priv->dev->stats.rx_crc_errors++;
1025                                 eth_broadcast_addr(priv->frag_source);
1026                                 more_frags = 1; /* don't send broken assembly */
1027                         }
1028                 }
1029
1030                 priv->frag_len += msdu_size;
1031                 priv->frag_no++;
1032
1033                 if (!more_frags) { /* last one */
1034                         eth_broadcast_addr(priv->frag_source);
1035                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1036                                 priv->dev->stats.rx_dropped++;
1037                         } else {
1038                                 skb_reserve(skb, 2);
1039                                 skb_put_data(skb, priv->rx_buf,
1040                                              priv->frag_len + 12);
1041                                 skb->protocol = eth_type_trans(skb, priv->dev);
1042                                 skb->ip_summed = CHECKSUM_NONE;
1043                                 netif_rx(skb);
1044                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1045                                 priv->dev->stats.rx_packets++;
1046                         }
1047                 }
1048         } else
1049                 priv->wstats.discard.fragment++;
1050 }
1051
1052 static void rx_done_irq(struct atmel_private *priv)
1053 {
1054         int i;
1055         struct ieee80211_hdr header;
1056
1057         for (i = 0;
1058              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1059                      i < priv->host_info.rx_desc_count;
1060              i++) {
1061
1062                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1063                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1064                 u32 crc = 0xffffffff;
1065
1066                 if (status != RX_STATUS_SUCCESS) {
1067                         if (status == 0xc1) /* determined by experiment */
1068                                 priv->wstats.discard.nwid++;
1069                         else
1070                                 priv->dev->stats.rx_errors++;
1071                         goto next;
1072                 }
1073
1074                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1075                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1076
1077                 if (msdu_size < 30) {
1078                         priv->dev->stats.rx_errors++;
1079                         goto next;
1080                 }
1081
1082                 /* Get header as far as end of seq_ctrl */
1083                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1084                 frame_ctl = le16_to_cpu(header.frame_control);
1085                 seq_control = le16_to_cpu(header.seq_ctrl);
1086
1087                 /* probe for CRC use here if needed  once five packets have
1088                    arrived with the same crc status, we assume we know what's
1089                    happening and stop probing */
1090                 if (priv->probe_crc) {
1091                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1092                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1093                         } else {
1094                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1095                         }
1096                         if (priv->do_rx_crc) {
1097                                 if (priv->crc_ok_cnt++ > 5)
1098                                         priv->probe_crc = 0;
1099                         } else {
1100                                 if (priv->crc_ko_cnt++ > 5)
1101                                         priv->probe_crc = 0;
1102                         }
1103                 }
1104
1105                 /* don't CRC header when WEP in use */
1106                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1107                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1108                 }
1109                 msdu_size -= 24; /* header */
1110
1111                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1112                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1113                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1114                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1115
1116                         if (!more_fragments && packet_fragment_no == 0) {
1117                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1118                         } else {
1119                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1120                                              packet_sequence_no, packet_fragment_no, more_fragments);
1121                         }
1122                 }
1123
1124                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1125                         /* copy rest of packet into buffer */
1126                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1127
1128                         /* we use the same buffer for frag reassembly and control packets */
1129                         eth_broadcast_addr(priv->frag_source);
1130
1131                         if (priv->do_rx_crc) {
1132                                 /* last 4 octets is crc */
1133                                 msdu_size -= 4;
1134                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1135                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1136                                         priv->dev->stats.rx_crc_errors++;
1137                                         goto next;
1138                                 }
1139                         }
1140
1141                         atmel_management_frame(priv, &header, msdu_size,
1142                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1143                 }
1144
1145 next:
1146                 /* release descriptor */
1147                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1148
1149                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1150                         priv->rx_desc_head++;
1151                 else
1152                         priv->rx_desc_head = 0;
1153         }
1154 }
1155
1156 static irqreturn_t service_interrupt(int irq, void *dev_id)
1157 {
1158         struct net_device *dev = (struct net_device *) dev_id;
1159         struct atmel_private *priv = netdev_priv(dev);
1160         u8 isr;
1161         int i = -1;
1162         static const u8 irq_order[] = {
1163                 ISR_OUT_OF_RANGE,
1164                 ISR_RxCOMPLETE,
1165                 ISR_TxCOMPLETE,
1166                 ISR_RxFRAMELOST,
1167                 ISR_FATAL_ERROR,
1168                 ISR_COMMAND_COMPLETE,
1169                 ISR_IBSS_MERGE,
1170                 ISR_GENERIC_IRQ
1171         };
1172
1173         if (priv->card && priv->present_callback &&
1174             !(*priv->present_callback)(priv->card))
1175                 return IRQ_HANDLED;
1176
1177         /* In this state upper-level code assumes it can mess with
1178            the card unhampered by interrupts which may change register state.
1179            Note that even though the card shouldn't generate interrupts
1180            the inturrupt line may be shared. This allows card setup
1181            to go on without disabling interrupts for a long time. */
1182         if (priv->station_state == STATION_STATE_DOWN)
1183                 return IRQ_NONE;
1184
1185         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1186
1187         while (1) {
1188                 if (!atmel_lock_mac(priv)) {
1189                         /* failed to contact card */
1190                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1191                         return IRQ_HANDLED;
1192                 }
1193
1194                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1195                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1196
1197                 if (!isr) {
1198                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1199                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1200                 }
1201
1202                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1203
1204                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1205                         if (isr & irq_order[i])
1206                                 break;
1207
1208                 if (!atmel_lock_mac(priv)) {
1209                         /* failed to contact card */
1210                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1211                         return IRQ_HANDLED;
1212                 }
1213
1214                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1215                 isr ^= irq_order[i];
1216                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1217                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1218
1219                 switch (irq_order[i]) {
1220
1221                 case ISR_OUT_OF_RANGE:
1222                         if (priv->operating_mode == IW_MODE_INFRA &&
1223                             priv->station_state == STATION_STATE_READY) {
1224                                 priv->station_is_associated = 0;
1225                                 atmel_scan(priv, 1);
1226                         }
1227                         break;
1228
1229                 case ISR_RxFRAMELOST:
1230                         priv->wstats.discard.misc++;
1231                         /* fall through */
1232                 case ISR_RxCOMPLETE:
1233                         rx_done_irq(priv);
1234                         break;
1235
1236                 case ISR_TxCOMPLETE:
1237                         tx_done_irq(priv);
1238                         break;
1239
1240                 case ISR_FATAL_ERROR:
1241                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1242                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1243                         break;
1244
1245                 case ISR_COMMAND_COMPLETE:
1246                         atmel_command_irq(priv);
1247                         break;
1248
1249                 case ISR_IBSS_MERGE:
1250                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1251                                       priv->CurrentBSSID, 6);
1252                         /* The WPA stuff cares about the current AP address */
1253                         if (priv->use_wpa)
1254                                 build_wpa_mib(priv);
1255                         break;
1256                 case ISR_GENERIC_IRQ:
1257                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1258                         break;
1259                 }
1260         }
1261 }
1262
1263 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1264 {
1265         struct atmel_private *priv = netdev_priv(dev);
1266
1267         /* update the link quality here in case we are seeing no beacons
1268            at all to drive the process */
1269         atmel_smooth_qual(priv);
1270
1271         priv->wstats.status = priv->station_state;
1272
1273         if (priv->operating_mode == IW_MODE_INFRA) {
1274                 if (priv->station_state != STATION_STATE_READY) {
1275                         priv->wstats.qual.qual = 0;
1276                         priv->wstats.qual.level = 0;
1277                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1278                                         | IW_QUAL_LEVEL_INVALID);
1279                 }
1280                 priv->wstats.qual.noise = 0;
1281                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1282         } else {
1283                 /* Quality levels cannot be determined in ad-hoc mode,
1284                    because we can 'hear' more that one remote station. */
1285                 priv->wstats.qual.qual = 0;
1286                 priv->wstats.qual.level = 0;
1287                 priv->wstats.qual.noise = 0;
1288                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1289                                         | IW_QUAL_LEVEL_INVALID
1290                                         | IW_QUAL_NOISE_INVALID;
1291                 priv->wstats.miss.beacon = 0;
1292         }
1293
1294         return &priv->wstats;
1295 }
1296
1297 static int atmel_set_mac_address(struct net_device *dev, void *p)
1298 {
1299         struct sockaddr *addr = p;
1300
1301         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1302         return atmel_open(dev);
1303 }
1304
1305 EXPORT_SYMBOL(atmel_open);
1306
1307 int atmel_open(struct net_device *dev)
1308 {
1309         struct atmel_private *priv = netdev_priv(dev);
1310         int i, channel, err;
1311
1312         /* any scheduled timer is no longer needed and might screw things up.. */
1313         del_timer_sync(&priv->management_timer);
1314
1315         /* Interrupts will not touch the card once in this state... */
1316         priv->station_state = STATION_STATE_DOWN;
1317
1318         if (priv->new_SSID_size) {
1319                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1320                 priv->SSID_size = priv->new_SSID_size;
1321                 priv->new_SSID_size = 0;
1322         }
1323         priv->BSS_list_entries = 0;
1324
1325         priv->AuthenticationRequestRetryCnt = 0;
1326         priv->AssociationRequestRetryCnt = 0;
1327         priv->ReAssociationRequestRetryCnt = 0;
1328         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1329         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1330
1331         priv->site_survey_state = SITE_SURVEY_IDLE;
1332         priv->station_is_associated = 0;
1333
1334         err = reset_atmel_card(dev);
1335         if (err)
1336                 return err;
1337
1338         if (priv->config_reg_domain) {
1339                 priv->reg_domain = priv->config_reg_domain;
1340                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1341         } else {
1342                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1343                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1344                         if (priv->reg_domain == channel_table[i].reg_domain)
1345                                 break;
1346                 if (i == ARRAY_SIZE(channel_table)) {
1347                         priv->reg_domain = REG_DOMAIN_MKK1;
1348                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1349                 }
1350         }
1351
1352         if ((channel = atmel_validate_channel(priv, priv->channel)))
1353                 priv->channel = channel;
1354
1355         /* this moves station_state on.... */
1356         atmel_scan(priv, 1);
1357
1358         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1359         return 0;
1360 }
1361
1362 static int atmel_close(struct net_device *dev)
1363 {
1364         struct atmel_private *priv = netdev_priv(dev);
1365
1366         /* Send event to userspace that we are disassociating */
1367         if (priv->station_state == STATION_STATE_READY) {
1368                 union iwreq_data wrqu;
1369
1370                 wrqu.data.length = 0;
1371                 wrqu.data.flags = 0;
1372                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1373                 eth_zero_addr(wrqu.ap_addr.sa_data);
1374                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1375         }
1376
1377         atmel_enter_state(priv, STATION_STATE_DOWN);
1378
1379         if (priv->bus_type == BUS_TYPE_PCCARD)
1380                 atmel_write16(dev, GCR, 0x0060);
1381         atmel_write16(dev, GCR, 0x0040);
1382         return 0;
1383 }
1384
1385 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1386 {
1387         /* check that channel is OK, if so return zero,
1388            else return suitable default channel */
1389         int i;
1390
1391         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1392                 if (priv->reg_domain == channel_table[i].reg_domain) {
1393                         if (channel >= channel_table[i].min &&
1394                             channel <= channel_table[i].max)
1395                                 return 0;
1396                         else
1397                                 return channel_table[i].min;
1398                 }
1399         return 0;
1400 }
1401
1402 static int atmel_proc_show(struct seq_file *m, void *v)
1403 {
1404         struct atmel_private *priv = m->private;
1405         int i;
1406         char *s, *r, *c;
1407
1408         seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1409
1410         if (priv->station_state != STATION_STATE_DOWN) {
1411                 seq_printf(m,
1412                            "Firmware version:\t%d.%d build %d\n"
1413                            "Firmware location:\t",
1414                            priv->host_info.major_version,
1415                            priv->host_info.minor_version,
1416                            priv->host_info.build_version);
1417
1418                 if (priv->card_type != CARD_TYPE_EEPROM)
1419                         seq_puts(m, "on card\n");
1420                 else if (priv->firmware)
1421                         seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1422                 else
1423                         seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1424
1425                 switch (priv->card_type) {
1426                 case CARD_TYPE_PARALLEL_FLASH:
1427                         c = "Parallel flash";
1428                         break;
1429                 case CARD_TYPE_SPI_FLASH:
1430                         c = "SPI flash\n";
1431                         break;
1432                 case CARD_TYPE_EEPROM:
1433                         c = "EEPROM";
1434                         break;
1435                 default:
1436                         c = "<unknown>";
1437                 }
1438
1439                 r = "<unknown>";
1440                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1441                         if (priv->reg_domain == channel_table[i].reg_domain)
1442                                 r = channel_table[i].name;
1443
1444                 seq_printf(m, "MAC memory type:\t%s\n", c);
1445                 seq_printf(m, "Regulatory domain:\t%s\n", r);
1446                 seq_printf(m, "Host CRC checking:\t%s\n",
1447                          priv->do_rx_crc ? "On" : "Off");
1448                 seq_printf(m, "WPA-capable firmware:\t%s\n",
1449                          priv->use_wpa ? "Yes" : "No");
1450         }
1451
1452         switch (priv->station_state) {
1453         case STATION_STATE_SCANNING:
1454                 s = "Scanning";
1455                 break;
1456         case STATION_STATE_JOINNING:
1457                 s = "Joining";
1458                 break;
1459         case STATION_STATE_AUTHENTICATING:
1460                 s = "Authenticating";
1461                 break;
1462         case STATION_STATE_ASSOCIATING:
1463                 s = "Associating";
1464                 break;
1465         case STATION_STATE_READY:
1466                 s = "Ready";
1467                 break;
1468         case STATION_STATE_REASSOCIATING:
1469                 s = "Reassociating";
1470                 break;
1471         case STATION_STATE_MGMT_ERROR:
1472                 s = "Management error";
1473                 break;
1474         case STATION_STATE_DOWN:
1475                 s = "Down";
1476                 break;
1477         default:
1478                 s = "<unknown>";
1479         }
1480
1481         seq_printf(m, "Current state:\t\t%s\n", s);
1482         return 0;
1483 }
1484
1485 static int atmel_proc_open(struct inode *inode, struct file *file)
1486 {
1487         return single_open(file, atmel_proc_show, PDE_DATA(inode));
1488 }
1489
1490 static const struct file_operations atmel_proc_fops = {
1491         .open           = atmel_proc_open,
1492         .read           = seq_read,
1493         .llseek         = seq_lseek,
1494         .release        = single_release,
1495 };
1496
1497 static const struct net_device_ops atmel_netdev_ops = {
1498         .ndo_open               = atmel_open,
1499         .ndo_stop               = atmel_close,
1500         .ndo_set_mac_address    = atmel_set_mac_address,
1501         .ndo_start_xmit         = start_tx,
1502         .ndo_do_ioctl           = atmel_ioctl,
1503         .ndo_validate_addr      = eth_validate_addr,
1504 };
1505
1506 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1507                                    const AtmelFWType fw_type,
1508                                    struct device *sys_dev,
1509                                    int (*card_present)(void *), void *card)
1510 {
1511         struct net_device *dev;
1512         struct atmel_private *priv;
1513         int rc;
1514
1515         /* Create the network device object. */
1516         dev = alloc_etherdev(sizeof(*priv));
1517         if (!dev)
1518                 return NULL;
1519
1520         if (dev_alloc_name(dev, dev->name) < 0) {
1521                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1522                 goto err_out_free;
1523         }
1524
1525         priv = netdev_priv(dev);
1526         priv->dev = dev;
1527         priv->sys_dev = sys_dev;
1528         priv->present_callback = card_present;
1529         priv->card = card;
1530         priv->firmware = NULL;
1531         priv->firmware_id[0] = '\0';
1532         priv->firmware_type = fw_type;
1533         if (firmware) /* module parameter */
1534                 strcpy(priv->firmware_id, firmware);
1535         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1536         priv->station_state = STATION_STATE_DOWN;
1537         priv->do_rx_crc = 0;
1538         /* For PCMCIA cards, some chips need CRC, some don't
1539            so we have to probe. */
1540         if (priv->bus_type == BUS_TYPE_PCCARD) {
1541                 priv->probe_crc = 1;
1542                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1543         } else
1544                 priv->probe_crc = 0;
1545         priv->last_qual = jiffies;
1546         priv->last_beacon_timestamp = 0;
1547         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1548         eth_zero_addr(priv->BSSID);
1549         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1550         priv->station_was_associated = 0;
1551
1552         priv->last_survey = jiffies;
1553         priv->preamble = LONG_PREAMBLE;
1554         priv->operating_mode = IW_MODE_INFRA;
1555         priv->connect_to_any_BSS = 0;
1556         priv->config_reg_domain = 0;
1557         priv->reg_domain = 0;
1558         priv->tx_rate = 3;
1559         priv->auto_tx_rate = 1;
1560         priv->channel = 4;
1561         priv->power_mode = 0;
1562         priv->SSID[0] = '\0';
1563         priv->SSID_size = 0;
1564         priv->new_SSID_size = 0;
1565         priv->frag_threshold = 2346;
1566         priv->rts_threshold = 2347;
1567         priv->short_retry = 7;
1568         priv->long_retry = 4;
1569
1570         priv->wep_is_on = 0;
1571         priv->default_key = 0;
1572         priv->encryption_level = 0;
1573         priv->exclude_unencrypted = 0;
1574         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1575         priv->use_wpa = 0;
1576         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1577         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1578
1579         priv->default_beacon_period = priv->beacon_period = 100;
1580         priv->listen_interval = 1;
1581
1582         timer_setup(&priv->management_timer, atmel_management_timer, 0);
1583         spin_lock_init(&priv->irqlock);
1584         spin_lock_init(&priv->timerlock);
1585
1586         dev->netdev_ops = &atmel_netdev_ops;
1587         dev->wireless_handlers = &atmel_handler_def;
1588         dev->irq = irq;
1589         dev->base_addr = port;
1590
1591         /* MTU range: 68 - 2312 */
1592         dev->min_mtu = 68;
1593         dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1594
1595         SET_NETDEV_DEV(dev, sys_dev);
1596
1597         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1598                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1599                 goto err_out_free;
1600         }
1601
1602         if (!request_region(dev->base_addr, 32,
1603                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1604                 goto err_out_irq;
1605         }
1606
1607         if (register_netdev(dev))
1608                 goto err_out_res;
1609
1610         if (!probe_atmel_card(dev)) {
1611                 unregister_netdev(dev);
1612                 goto err_out_res;
1613         }
1614
1615         netif_carrier_off(dev);
1616
1617         if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv))
1618                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1619
1620         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1621                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1622
1623         return dev;
1624
1625 err_out_res:
1626         release_region(dev->base_addr, 32);
1627 err_out_irq:
1628         free_irq(dev->irq, dev);
1629 err_out_free:
1630         free_netdev(dev);
1631         return NULL;
1632 }
1633
1634 EXPORT_SYMBOL(init_atmel_card);
1635
1636 void stop_atmel_card(struct net_device *dev)
1637 {
1638         struct atmel_private *priv = netdev_priv(dev);
1639
1640         /* put a brick on it... */
1641         if (priv->bus_type == BUS_TYPE_PCCARD)
1642                 atmel_write16(dev, GCR, 0x0060);
1643         atmel_write16(dev, GCR, 0x0040);
1644
1645         del_timer_sync(&priv->management_timer);
1646         unregister_netdev(dev);
1647         remove_proc_entry("driver/atmel", NULL);
1648         free_irq(dev->irq, dev);
1649         kfree(priv->firmware);
1650         release_region(dev->base_addr, 32);
1651         free_netdev(dev);
1652 }
1653
1654 EXPORT_SYMBOL(stop_atmel_card);
1655
1656 static int atmel_set_essid(struct net_device *dev,
1657                            struct iw_request_info *info,
1658                            struct iw_point *dwrq,
1659                            char *extra)
1660 {
1661         struct atmel_private *priv = netdev_priv(dev);
1662
1663         /* Check if we asked for `any' */
1664         if (dwrq->flags == 0) {
1665                 priv->connect_to_any_BSS = 1;
1666         } else {
1667                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1668
1669                 priv->connect_to_any_BSS = 0;
1670
1671                 /* Check the size of the string */
1672                 if (dwrq->length > MAX_SSID_LENGTH)
1673                          return -E2BIG;
1674                 if (index != 0)
1675                         return -EINVAL;
1676
1677                 memcpy(priv->new_SSID, extra, dwrq->length);
1678                 priv->new_SSID_size = dwrq->length;
1679         }
1680
1681         return -EINPROGRESS;
1682 }
1683
1684 static int atmel_get_essid(struct net_device *dev,
1685                            struct iw_request_info *info,
1686                            struct iw_point *dwrq,
1687                            char *extra)
1688 {
1689         struct atmel_private *priv = netdev_priv(dev);
1690
1691         /* Get the current SSID */
1692         if (priv->new_SSID_size != 0) {
1693                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1694                 dwrq->length = priv->new_SSID_size;
1695         } else {
1696                 memcpy(extra, priv->SSID, priv->SSID_size);
1697                 dwrq->length = priv->SSID_size;
1698         }
1699
1700         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1701
1702         return 0;
1703 }
1704
1705 static int atmel_get_wap(struct net_device *dev,
1706                          struct iw_request_info *info,
1707                          struct sockaddr *awrq,
1708                          char *extra)
1709 {
1710         struct atmel_private *priv = netdev_priv(dev);
1711         memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1712         awrq->sa_family = ARPHRD_ETHER;
1713
1714         return 0;
1715 }
1716
1717 static int atmel_set_encode(struct net_device *dev,
1718                             struct iw_request_info *info,
1719                             struct iw_point *dwrq,
1720                             char *extra)
1721 {
1722         struct atmel_private *priv = netdev_priv(dev);
1723
1724         /* Basic checking: do we have a key to set ?
1725          * Note : with the new API, it's impossible to get a NULL pointer.
1726          * Therefore, we need to check a key size == 0 instead.
1727          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1728          * when no key is present (only change flags), but older versions
1729          * don't do it. - Jean II */
1730         if (dwrq->length > 0) {
1731                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1732                 int current_index = priv->default_key;
1733                 /* Check the size of the key */
1734                 if (dwrq->length > 13) {
1735                         return -EINVAL;
1736                 }
1737                 /* Check the index (none -> use current) */
1738                 if (index < 0 || index >= 4)
1739                         index = current_index;
1740                 else
1741                         priv->default_key = index;
1742                 /* Set the length */
1743                 if (dwrq->length > 5)
1744                         priv->wep_key_len[index] = 13;
1745                 else
1746                         if (dwrq->length > 0)
1747                                 priv->wep_key_len[index] = 5;
1748                         else
1749                                 /* Disable the key */
1750                                 priv->wep_key_len[index] = 0;
1751                 /* Check if the key is not marked as invalid */
1752                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1753                         /* Cleanup */
1754                         memset(priv->wep_keys[index], 0, 13);
1755                         /* Copy the key in the driver */
1756                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1757                 }
1758                 /* WE specify that if a valid key is set, encryption
1759                  * should be enabled (user may turn it off later)
1760                  * This is also how "iwconfig ethX key on" works */
1761                 if (index == current_index &&
1762                     priv->wep_key_len[index] > 0) {
1763                         priv->wep_is_on = 1;
1764                         priv->exclude_unencrypted = 1;
1765                         if (priv->wep_key_len[index] > 5) {
1766                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1767                                 priv->encryption_level = 2;
1768                         } else {
1769                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1770                                 priv->encryption_level = 1;
1771                         }
1772                 }
1773         } else {
1774                 /* Do we want to just set the transmit key index ? */
1775                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1776                 if (index >= 0 && index < 4) {
1777                         priv->default_key = index;
1778                 } else
1779                         /* Don't complain if only change the mode */
1780                         if (!(dwrq->flags & IW_ENCODE_MODE))
1781                                 return -EINVAL;
1782         }
1783         /* Read the flags */
1784         if (dwrq->flags & IW_ENCODE_DISABLED) {
1785                 priv->wep_is_on = 0;
1786                 priv->encryption_level = 0;
1787                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1788         } else {
1789                 priv->wep_is_on = 1;
1790                 if (priv->wep_key_len[priv->default_key] > 5) {
1791                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1792                         priv->encryption_level = 2;
1793                 } else {
1794                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1795                         priv->encryption_level = 1;
1796                 }
1797         }
1798         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1799                 priv->exclude_unencrypted = 1;
1800         if (dwrq->flags & IW_ENCODE_OPEN)
1801                 priv->exclude_unencrypted = 0;
1802
1803         return -EINPROGRESS;            /* Call commit handler */
1804 }
1805
1806 static int atmel_get_encode(struct net_device *dev,
1807                             struct iw_request_info *info,
1808                             struct iw_point *dwrq,
1809                             char *extra)
1810 {
1811         struct atmel_private *priv = netdev_priv(dev);
1812         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1813
1814         if (!priv->wep_is_on)
1815                 dwrq->flags = IW_ENCODE_DISABLED;
1816         else {
1817                 if (priv->exclude_unencrypted)
1818                         dwrq->flags = IW_ENCODE_RESTRICTED;
1819                 else
1820                         dwrq->flags = IW_ENCODE_OPEN;
1821         }
1822                 /* Which key do we want ? -1 -> tx index */
1823         if (index < 0 || index >= 4)
1824                 index = priv->default_key;
1825         dwrq->flags |= index + 1;
1826         /* Copy the key to the user buffer */
1827         dwrq->length = priv->wep_key_len[index];
1828         if (dwrq->length > 16) {
1829                 dwrq->length = 0;
1830         } else {
1831                 memset(extra, 0, 16);
1832                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1833         }
1834
1835         return 0;
1836 }
1837
1838 static int atmel_set_encodeext(struct net_device *dev,
1839                             struct iw_request_info *info,
1840                             union iwreq_data *wrqu,
1841                             char *extra)
1842 {
1843         struct atmel_private *priv = netdev_priv(dev);
1844         struct iw_point *encoding = &wrqu->encoding;
1845         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1846         int idx, key_len, alg = ext->alg, set_key = 1;
1847
1848         /* Determine and validate the key index */
1849         idx = encoding->flags & IW_ENCODE_INDEX;
1850         if (idx) {
1851                 if (idx < 1 || idx > 4)
1852                         return -EINVAL;
1853                 idx--;
1854         } else
1855                 idx = priv->default_key;
1856
1857         if (encoding->flags & IW_ENCODE_DISABLED)
1858             alg = IW_ENCODE_ALG_NONE;
1859
1860         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1861                 priv->default_key = idx;
1862                 set_key = ext->key_len > 0 ? 1 : 0;
1863         }
1864
1865         if (set_key) {
1866                 /* Set the requested key first */
1867                 switch (alg) {
1868                 case IW_ENCODE_ALG_NONE:
1869                         priv->wep_is_on = 0;
1870                         priv->encryption_level = 0;
1871                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1872                         break;
1873                 case IW_ENCODE_ALG_WEP:
1874                         if (ext->key_len > 5) {
1875                                 priv->wep_key_len[idx] = 13;
1876                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1877                                 priv->encryption_level = 2;
1878                         } else if (ext->key_len > 0) {
1879                                 priv->wep_key_len[idx] = 5;
1880                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1881                                 priv->encryption_level = 1;
1882                         } else {
1883                                 return -EINVAL;
1884                         }
1885                         priv->wep_is_on = 1;
1886                         memset(priv->wep_keys[idx], 0, 13);
1887                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1888                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1889                         break;
1890                 default:
1891                         return -EINVAL;
1892                 }
1893         }
1894
1895         return -EINPROGRESS;
1896 }
1897
1898 static int atmel_get_encodeext(struct net_device *dev,
1899                             struct iw_request_info *info,
1900                             union iwreq_data *wrqu,
1901                             char *extra)
1902 {
1903         struct atmel_private *priv = netdev_priv(dev);
1904         struct iw_point *encoding = &wrqu->encoding;
1905         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1906         int idx, max_key_len;
1907
1908         max_key_len = encoding->length - sizeof(*ext);
1909         if (max_key_len < 0)
1910                 return -EINVAL;
1911
1912         idx = encoding->flags & IW_ENCODE_INDEX;
1913         if (idx) {
1914                 if (idx < 1 || idx > 4)
1915                         return -EINVAL;
1916                 idx--;
1917         } else
1918                 idx = priv->default_key;
1919
1920         encoding->flags = idx + 1;
1921         memset(ext, 0, sizeof(*ext));
1922
1923         if (!priv->wep_is_on) {
1924                 ext->alg = IW_ENCODE_ALG_NONE;
1925                 ext->key_len = 0;
1926                 encoding->flags |= IW_ENCODE_DISABLED;
1927         } else {
1928                 if (priv->encryption_level > 0)
1929                         ext->alg = IW_ENCODE_ALG_WEP;
1930                 else
1931                         return -EINVAL;
1932
1933                 ext->key_len = priv->wep_key_len[idx];
1934                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1935                 encoding->flags |= IW_ENCODE_ENABLED;
1936         }
1937
1938         return 0;
1939 }
1940
1941 static int atmel_set_auth(struct net_device *dev,
1942                                struct iw_request_info *info,
1943                                union iwreq_data *wrqu, char *extra)
1944 {
1945         struct atmel_private *priv = netdev_priv(dev);
1946         struct iw_param *param = &wrqu->param;
1947
1948         switch (param->flags & IW_AUTH_INDEX) {
1949         case IW_AUTH_WPA_VERSION:
1950         case IW_AUTH_CIPHER_PAIRWISE:
1951         case IW_AUTH_CIPHER_GROUP:
1952         case IW_AUTH_KEY_MGMT:
1953         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1954         case IW_AUTH_PRIVACY_INVOKED:
1955                 /*
1956                  * atmel does not use these parameters
1957                  */
1958                 break;
1959
1960         case IW_AUTH_DROP_UNENCRYPTED:
1961                 priv->exclude_unencrypted = param->value ? 1 : 0;
1962                 break;
1963
1964         case IW_AUTH_80211_AUTH_ALG: {
1965                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1966                                 priv->exclude_unencrypted = 1;
1967                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1968                                 priv->exclude_unencrypted = 0;
1969                         } else
1970                                 return -EINVAL;
1971                         break;
1972                 }
1973
1974         case IW_AUTH_WPA_ENABLED:
1975                 /* Silently accept disable of WPA */
1976                 if (param->value > 0)
1977                         return -EOPNOTSUPP;
1978                 break;
1979
1980         default:
1981                 return -EOPNOTSUPP;
1982         }
1983         return -EINPROGRESS;
1984 }
1985
1986 static int atmel_get_auth(struct net_device *dev,
1987                                struct iw_request_info *info,
1988                                union iwreq_data *wrqu, char *extra)
1989 {
1990         struct atmel_private *priv = netdev_priv(dev);
1991         struct iw_param *param = &wrqu->param;
1992
1993         switch (param->flags & IW_AUTH_INDEX) {
1994         case IW_AUTH_DROP_UNENCRYPTED:
1995                 param->value = priv->exclude_unencrypted;
1996                 break;
1997
1998         case IW_AUTH_80211_AUTH_ALG:
1999                 if (priv->exclude_unencrypted == 1)
2000                         param->value = IW_AUTH_ALG_SHARED_KEY;
2001                 else
2002                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2003                 break;
2004
2005         case IW_AUTH_WPA_ENABLED:
2006                 param->value = 0;
2007                 break;
2008
2009         default:
2010                 return -EOPNOTSUPP;
2011         }
2012         return 0;
2013 }
2014
2015
2016 static int atmel_get_name(struct net_device *dev,
2017                           struct iw_request_info *info,
2018                           char *cwrq,
2019                           char *extra)
2020 {
2021         strcpy(cwrq, "IEEE 802.11-DS");
2022         return 0;
2023 }
2024
2025 static int atmel_set_rate(struct net_device *dev,
2026                           struct iw_request_info *info,
2027                           struct iw_param *vwrq,
2028                           char *extra)
2029 {
2030         struct atmel_private *priv = netdev_priv(dev);
2031
2032         if (vwrq->fixed == 0) {
2033                 priv->tx_rate = 3;
2034                 priv->auto_tx_rate = 1;
2035         } else {
2036                 priv->auto_tx_rate = 0;
2037
2038                 /* Which type of value ? */
2039                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2040                         /* Setting by rate index */
2041                         priv->tx_rate = vwrq->value;
2042                 } else {
2043                 /* Setting by frequency value */
2044                         switch (vwrq->value) {
2045                         case  1000000:
2046                                 priv->tx_rate = 0;
2047                                 break;
2048                         case  2000000:
2049                                 priv->tx_rate = 1;
2050                                 break;
2051                         case  5500000:
2052                                 priv->tx_rate = 2;
2053                                 break;
2054                         case 11000000:
2055                                 priv->tx_rate = 3;
2056                                 break;
2057                         default:
2058                                 return -EINVAL;
2059                         }
2060                 }
2061         }
2062
2063         return -EINPROGRESS;
2064 }
2065
2066 static int atmel_set_mode(struct net_device *dev,
2067                           struct iw_request_info *info,
2068                           __u32 *uwrq,
2069                           char *extra)
2070 {
2071         struct atmel_private *priv = netdev_priv(dev);
2072
2073         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2074                 return -EINVAL;
2075
2076         priv->operating_mode = *uwrq;
2077         return -EINPROGRESS;
2078 }
2079
2080 static int atmel_get_mode(struct net_device *dev,
2081                           struct iw_request_info *info,
2082                           __u32 *uwrq,
2083                           char *extra)
2084 {
2085         struct atmel_private *priv = netdev_priv(dev);
2086
2087         *uwrq = priv->operating_mode;
2088         return 0;
2089 }
2090
2091 static int atmel_get_rate(struct net_device *dev,
2092                          struct iw_request_info *info,
2093                          struct iw_param *vwrq,
2094                          char *extra)
2095 {
2096         struct atmel_private *priv = netdev_priv(dev);
2097
2098         if (priv->auto_tx_rate) {
2099                 vwrq->fixed = 0;
2100                 vwrq->value = 11000000;
2101         } else {
2102                 vwrq->fixed = 1;
2103                 switch (priv->tx_rate) {
2104                 case 0:
2105                         vwrq->value =  1000000;
2106                         break;
2107                 case 1:
2108                         vwrq->value =  2000000;
2109                         break;
2110                 case 2:
2111                         vwrq->value =  5500000;
2112                         break;
2113                 case 3:
2114                         vwrq->value = 11000000;
2115                         break;
2116                 }
2117         }
2118         return 0;
2119 }
2120
2121 static int atmel_set_power(struct net_device *dev,
2122                            struct iw_request_info *info,
2123                            struct iw_param *vwrq,
2124                            char *extra)
2125 {
2126         struct atmel_private *priv = netdev_priv(dev);
2127         priv->power_mode = vwrq->disabled ? 0 : 1;
2128         return -EINPROGRESS;
2129 }
2130
2131 static int atmel_get_power(struct net_device *dev,
2132                            struct iw_request_info *info,
2133                            struct iw_param *vwrq,
2134                            char *extra)
2135 {
2136         struct atmel_private *priv = netdev_priv(dev);
2137         vwrq->disabled = priv->power_mode ? 0 : 1;
2138         vwrq->flags = IW_POWER_ON;
2139         return 0;
2140 }
2141
2142 static int atmel_set_retry(struct net_device *dev,
2143                            struct iw_request_info *info,
2144                            struct iw_param *vwrq,
2145                            char *extra)
2146 {
2147         struct atmel_private *priv = netdev_priv(dev);
2148
2149         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2150                 if (vwrq->flags & IW_RETRY_LONG)
2151                         priv->long_retry = vwrq->value;
2152                 else if (vwrq->flags & IW_RETRY_SHORT)
2153                         priv->short_retry = vwrq->value;
2154                 else {
2155                         /* No modifier : set both */
2156                         priv->long_retry = vwrq->value;
2157                         priv->short_retry = vwrq->value;
2158                 }
2159                 return -EINPROGRESS;
2160         }
2161
2162         return -EINVAL;
2163 }
2164
2165 static int atmel_get_retry(struct net_device *dev,
2166                            struct iw_request_info *info,
2167                            struct iw_param *vwrq,
2168                            char *extra)
2169 {
2170         struct atmel_private *priv = netdev_priv(dev);
2171
2172         vwrq->disabled = 0;      /* Can't be disabled */
2173
2174         /* Note : by default, display the short retry number */
2175         if (vwrq->flags & IW_RETRY_LONG) {
2176                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2177                 vwrq->value = priv->long_retry;
2178         } else {
2179                 vwrq->flags = IW_RETRY_LIMIT;
2180                 vwrq->value = priv->short_retry;
2181                 if (priv->long_retry != priv->short_retry)
2182                         vwrq->flags |= IW_RETRY_SHORT;
2183         }
2184
2185         return 0;
2186 }
2187
2188 static int atmel_set_rts(struct net_device *dev,
2189                          struct iw_request_info *info,
2190                          struct iw_param *vwrq,
2191                          char *extra)
2192 {
2193         struct atmel_private *priv = netdev_priv(dev);
2194         int rthr = vwrq->value;
2195
2196         if (vwrq->disabled)
2197                 rthr = 2347;
2198         if ((rthr < 0) || (rthr > 2347)) {
2199                 return -EINVAL;
2200         }
2201         priv->rts_threshold = rthr;
2202
2203         return -EINPROGRESS;            /* Call commit handler */
2204 }
2205
2206 static int atmel_get_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
2213         vwrq->value = priv->rts_threshold;
2214         vwrq->disabled = (vwrq->value >= 2347);
2215         vwrq->fixed = 1;
2216
2217         return 0;
2218 }
2219
2220 static int atmel_set_frag(struct net_device *dev,
2221                           struct iw_request_info *info,
2222                           struct iw_param *vwrq,
2223                           char *extra)
2224 {
2225         struct atmel_private *priv = netdev_priv(dev);
2226         int fthr = vwrq->value;
2227
2228         if (vwrq->disabled)
2229                 fthr = 2346;
2230         if ((fthr < 256) || (fthr > 2346)) {
2231                 return -EINVAL;
2232         }
2233         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2234         priv->frag_threshold = fthr;
2235
2236         return -EINPROGRESS;            /* Call commit handler */
2237 }
2238
2239 static int atmel_get_frag(struct net_device *dev,
2240                           struct iw_request_info *info,
2241                           struct iw_param *vwrq,
2242                           char *extra)
2243 {
2244         struct atmel_private *priv = netdev_priv(dev);
2245
2246         vwrq->value = priv->frag_threshold;
2247         vwrq->disabled = (vwrq->value >= 2346);
2248         vwrq->fixed = 1;
2249
2250         return 0;
2251 }
2252
2253 static int atmel_set_freq(struct net_device *dev,
2254                           struct iw_request_info *info,
2255                           struct iw_freq *fwrq,
2256                           char *extra)
2257 {
2258         struct atmel_private *priv = netdev_priv(dev);
2259         int rc = -EINPROGRESS;          /* Call commit handler */
2260
2261         /* If setting by frequency, convert to a channel */
2262         if (fwrq->e == 1) {
2263                 int f = fwrq->m / 100000;
2264
2265                 /* Hack to fall through... */
2266                 fwrq->e = 0;
2267                 fwrq->m = ieee80211_frequency_to_channel(f);
2268         }
2269         /* Setting by channel number */
2270         if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2271                 rc = -EOPNOTSUPP;
2272         else {
2273                 int channel = fwrq->m;
2274                 if (atmel_validate_channel(priv, channel) == 0) {
2275                         priv->channel = channel;
2276                 } else {
2277                         rc = -EINVAL;
2278                 }
2279         }
2280         return rc;
2281 }
2282
2283 static int atmel_get_freq(struct net_device *dev,
2284                           struct iw_request_info *info,
2285                           struct iw_freq *fwrq,
2286                           char *extra)
2287 {
2288         struct atmel_private *priv = netdev_priv(dev);
2289
2290         fwrq->m = priv->channel;
2291         fwrq->e = 0;
2292         return 0;
2293 }
2294
2295 static int atmel_set_scan(struct net_device *dev,
2296                           struct iw_request_info *info,
2297                           struct iw_point *dwrq,
2298                           char *extra)
2299 {
2300         struct atmel_private *priv = netdev_priv(dev);
2301         unsigned long flags;
2302
2303         /* Note : you may have realised that, as this is a SET operation,
2304          * this is privileged and therefore a normal user can't
2305          * perform scanning.
2306          * This is not an error, while the device perform scanning,
2307          * traffic doesn't flow, so it's a perfect DoS...
2308          * Jean II */
2309
2310         if (priv->station_state == STATION_STATE_DOWN)
2311                 return -EAGAIN;
2312
2313         /* Timeout old surveys. */
2314         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2315                 priv->site_survey_state = SITE_SURVEY_IDLE;
2316         priv->last_survey = jiffies;
2317
2318         /* Initiate a scan command */
2319         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2320                 return -EBUSY;
2321
2322         del_timer_sync(&priv->management_timer);
2323         spin_lock_irqsave(&priv->irqlock, flags);
2324
2325         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2326         priv->fast_scan = 0;
2327         atmel_scan(priv, 0);
2328         spin_unlock_irqrestore(&priv->irqlock, flags);
2329
2330         return 0;
2331 }
2332
2333 static int atmel_get_scan(struct net_device *dev,
2334                           struct iw_request_info *info,
2335                           struct iw_point *dwrq,
2336                           char *extra)
2337 {
2338         struct atmel_private *priv = netdev_priv(dev);
2339         int i;
2340         char *current_ev = extra;
2341         struct iw_event iwe;
2342
2343         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2344                 return -EAGAIN;
2345
2346         for (i = 0; i < priv->BSS_list_entries; i++) {
2347                 iwe.cmd = SIOCGIWAP;
2348                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2349                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2350                 current_ev = iwe_stream_add_event(info, current_ev,
2351                                                   extra + IW_SCAN_MAX_DATA,
2352                                                   &iwe, IW_EV_ADDR_LEN);
2353
2354                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2355                 if (iwe.u.data.length > 32)
2356                         iwe.u.data.length = 32;
2357                 iwe.cmd = SIOCGIWESSID;
2358                 iwe.u.data.flags = 1;
2359                 current_ev = iwe_stream_add_point(info, current_ev,
2360                                                   extra + IW_SCAN_MAX_DATA,
2361                                                   &iwe, priv->BSSinfo[i].SSID);
2362
2363                 iwe.cmd = SIOCGIWMODE;
2364                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2365                 current_ev = iwe_stream_add_event(info, current_ev,
2366                                                   extra + IW_SCAN_MAX_DATA,
2367                                                   &iwe, IW_EV_UINT_LEN);
2368
2369                 iwe.cmd = SIOCGIWFREQ;
2370                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2371                 iwe.u.freq.e = 0;
2372                 current_ev = iwe_stream_add_event(info, current_ev,
2373                                                   extra + IW_SCAN_MAX_DATA,
2374                                                   &iwe, IW_EV_FREQ_LEN);
2375
2376                 /* Add quality statistics */
2377                 iwe.cmd = IWEVQUAL;
2378                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2379                 iwe.u.qual.qual  = iwe.u.qual.level;
2380                 /* iwe.u.qual.noise  = SOMETHING */
2381                 current_ev = iwe_stream_add_event(info, current_ev,
2382                                                   extra + IW_SCAN_MAX_DATA,
2383                                                   &iwe, IW_EV_QUAL_LEN);
2384
2385
2386                 iwe.cmd = SIOCGIWENCODE;
2387                 if (priv->BSSinfo[i].UsingWEP)
2388                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2389                 else
2390                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2391                 iwe.u.data.length = 0;
2392                 current_ev = iwe_stream_add_point(info, current_ev,
2393                                                   extra + IW_SCAN_MAX_DATA,
2394                                                   &iwe, NULL);
2395         }
2396
2397         /* Length of data */
2398         dwrq->length = (current_ev - extra);
2399         dwrq->flags = 0;
2400
2401         return 0;
2402 }
2403
2404 static int atmel_get_range(struct net_device *dev,
2405                            struct iw_request_info *info,
2406                            struct iw_point *dwrq,
2407                            char *extra)
2408 {
2409         struct atmel_private *priv = netdev_priv(dev);
2410         struct iw_range *range = (struct iw_range *) extra;
2411         int k, i, j;
2412
2413         dwrq->length = sizeof(struct iw_range);
2414         memset(range, 0, sizeof(struct iw_range));
2415         range->min_nwid = 0x0000;
2416         range->max_nwid = 0x0000;
2417         range->num_channels = 0;
2418         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2419                 if (priv->reg_domain == channel_table[j].reg_domain) {
2420                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2421                         break;
2422                 }
2423         if (range->num_channels != 0) {
2424                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2425                         range->freq[k].i = i; /* List index */
2426
2427                         /* Values in MHz -> * 10^5 * 10 */
2428                         range->freq[k].m = 100000 *
2429                          ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2430                         range->freq[k++].e = 1;
2431                 }
2432                 range->num_frequency = k;
2433         }
2434
2435         range->max_qual.qual = 100;
2436         range->max_qual.level = 100;
2437         range->max_qual.noise = 0;
2438         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2439
2440         range->avg_qual.qual = 50;
2441         range->avg_qual.level = 50;
2442         range->avg_qual.noise = 0;
2443         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2444
2445         range->sensitivity = 0;
2446
2447         range->bitrate[0] =  1000000;
2448         range->bitrate[1] =  2000000;
2449         range->bitrate[2] =  5500000;
2450         range->bitrate[3] = 11000000;
2451         range->num_bitrates = 4;
2452
2453         range->min_rts = 0;
2454         range->max_rts = 2347;
2455         range->min_frag = 256;
2456         range->max_frag = 2346;
2457
2458         range->encoding_size[0] = 5;
2459         range->encoding_size[1] = 13;
2460         range->num_encoding_sizes = 2;
2461         range->max_encoding_tokens = 4;
2462
2463         range->pmp_flags = IW_POWER_ON;
2464         range->pmt_flags = IW_POWER_ON;
2465         range->pm_capa = 0;
2466
2467         range->we_version_source = WIRELESS_EXT;
2468         range->we_version_compiled = WIRELESS_EXT;
2469         range->retry_capa = IW_RETRY_LIMIT ;
2470         range->retry_flags = IW_RETRY_LIMIT;
2471         range->r_time_flags = 0;
2472         range->min_retry = 1;
2473         range->max_retry = 65535;
2474
2475         return 0;
2476 }
2477
2478 static int atmel_set_wap(struct net_device *dev,
2479                          struct iw_request_info *info,
2480                          struct sockaddr *awrq,
2481                          char *extra)
2482 {
2483         struct atmel_private *priv = netdev_priv(dev);
2484         int i;
2485         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2486         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2487         unsigned long flags;
2488
2489         if (awrq->sa_family != ARPHRD_ETHER)
2490                 return -EINVAL;
2491
2492         if (!memcmp(any, awrq->sa_data, 6) ||
2493             !memcmp(off, awrq->sa_data, 6)) {
2494                 del_timer_sync(&priv->management_timer);
2495                 spin_lock_irqsave(&priv->irqlock, flags);
2496                 atmel_scan(priv, 1);
2497                 spin_unlock_irqrestore(&priv->irqlock, flags);
2498                 return 0;
2499         }
2500
2501         for (i = 0; i < priv->BSS_list_entries; i++) {
2502                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2503                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2504                                 return -EINVAL;
2505                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2506                                 return -EINVAL;
2507                         } else {
2508                                 del_timer_sync(&priv->management_timer);
2509                                 spin_lock_irqsave(&priv->irqlock, flags);
2510                                 atmel_join_bss(priv, i);
2511                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2512                                 return 0;
2513                         }
2514                 }
2515         }
2516
2517         return -EINVAL;
2518 }
2519
2520 static int atmel_config_commit(struct net_device *dev,
2521                                struct iw_request_info *info,    /* NULL */
2522                                void *zwrq,                      /* NULL */
2523                                char *extra)                     /* NULL */
2524 {
2525         return atmel_open(dev);
2526 }
2527
2528 static const iw_handler atmel_handler[] =
2529 {
2530         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2531         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2532         (iw_handler) NULL,                      /* SIOCSIWNWID */
2533         (iw_handler) NULL,                      /* SIOCGIWNWID */
2534         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2535         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2536         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2537         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2538         (iw_handler) NULL,                      /* SIOCSIWSENS */
2539         (iw_handler) NULL,                      /* SIOCGIWSENS */
2540         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2541         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2542         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2543         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2544         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2545         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2546         (iw_handler) NULL,                      /* SIOCSIWSPY */
2547         (iw_handler) NULL,                      /* SIOCGIWSPY */
2548         (iw_handler) NULL,                      /* -- hole -- */
2549         (iw_handler) NULL,                      /* -- hole -- */
2550         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2551         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2552         (iw_handler) NULL,                      /* -- hole -- */
2553         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2554         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2555         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2556         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2557         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2558         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2559         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2560         (iw_handler) NULL,                      /* -- hole -- */
2561         (iw_handler) NULL,                      /* -- hole -- */
2562         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2563         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2564         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2565         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2566         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2567         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2568         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2569         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2570         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2571         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2572         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2573         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2574         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2575         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2576         (iw_handler) NULL,                      /* -- hole -- */
2577         (iw_handler) NULL,                      /* -- hole -- */
2578         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2579         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2580         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2581         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2582         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2583         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2584         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2585 };
2586
2587 static const iw_handler atmel_private_handler[] =
2588 {
2589         NULL,                           /* SIOCIWFIRSTPRIV */
2590 };
2591
2592 struct atmel_priv_ioctl {
2593         char id[32];
2594         unsigned char __user *data;
2595         unsigned short len;
2596 };
2597
2598 #define ATMELFWL        SIOCIWFIRSTPRIV
2599 #define ATMELIDIFC      ATMELFWL + 1
2600 #define ATMELRD         ATMELFWL + 2
2601 #define ATMELMAGIC 0x51807
2602 #define REGDOMAINSZ 20
2603
2604 static const struct iw_priv_args atmel_private_args[] = {
2605         {
2606                 .cmd = ATMELFWL,
2607                 .set_args = IW_PRIV_TYPE_BYTE
2608                                 | IW_PRIV_SIZE_FIXED
2609                                 | sizeof(struct atmel_priv_ioctl),
2610                 .get_args = IW_PRIV_TYPE_NONE,
2611                 .name = "atmelfwl"
2612         }, {
2613                 .cmd = ATMELIDIFC,
2614                 .set_args = IW_PRIV_TYPE_NONE,
2615                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2616                 .name = "atmelidifc"
2617         }, {
2618                 .cmd = ATMELRD,
2619                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2620                 .get_args = IW_PRIV_TYPE_NONE,
2621                 .name = "regdomain"
2622         },
2623 };
2624
2625 static const struct iw_handler_def atmel_handler_def = {
2626         .num_standard   = ARRAY_SIZE(atmel_handler),
2627         .num_private    = ARRAY_SIZE(atmel_private_handler),
2628         .num_private_args = ARRAY_SIZE(atmel_private_args),
2629         .standard       = (iw_handler *) atmel_handler,
2630         .private        = (iw_handler *) atmel_private_handler,
2631         .private_args   = (struct iw_priv_args *) atmel_private_args,
2632         .get_wireless_stats = atmel_get_wireless_stats
2633 };
2634
2635 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2636 {
2637         int i, rc = 0;
2638         struct atmel_private *priv = netdev_priv(dev);
2639         struct atmel_priv_ioctl com;
2640         struct iwreq *wrq = (struct iwreq *) rq;
2641         unsigned char *new_firmware;
2642         char domain[REGDOMAINSZ + 1];
2643
2644         switch (cmd) {
2645         case ATMELIDIFC:
2646                 wrq->u.param.value = ATMELMAGIC;
2647                 break;
2648
2649         case ATMELFWL:
2650                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2651                         rc = -EFAULT;
2652                         break;
2653                 }
2654
2655                 if (!capable(CAP_NET_ADMIN)) {
2656                         rc = -EPERM;
2657                         break;
2658                 }
2659
2660                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2661                         rc = -ENOMEM;
2662                         break;
2663                 }
2664
2665                 if (copy_from_user(new_firmware, com.data, com.len)) {
2666                         kfree(new_firmware);
2667                         rc = -EFAULT;
2668                         break;
2669                 }
2670
2671                 kfree(priv->firmware);
2672
2673                 priv->firmware = new_firmware;
2674                 priv->firmware_length = com.len;
2675                 strncpy(priv->firmware_id, com.id, 31);
2676                 priv->firmware_id[31] = '\0';
2677                 break;
2678
2679         case ATMELRD:
2680                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2681                         rc = -EFAULT;
2682                         break;
2683                 }
2684
2685                 if (!capable(CAP_NET_ADMIN)) {
2686                         rc = -EPERM;
2687                         break;
2688                 }
2689
2690                 domain[REGDOMAINSZ] = 0;
2691                 rc = -EINVAL;
2692                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2693                         if (!strcasecmp(channel_table[i].name, domain)) {
2694                                 priv->config_reg_domain = channel_table[i].reg_domain;
2695                                 rc = 0;
2696                         }
2697                 }
2698
2699                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2700                         rc = atmel_open(dev);
2701                 break;
2702
2703         default:
2704                 rc = -EOPNOTSUPP;
2705         }
2706
2707         return rc;
2708 }
2709
2710 struct auth_body {
2711         __le16 alg;
2712         __le16 trans_seq;
2713         __le16 status;
2714         u8 el_id;
2715         u8 chall_text_len;
2716         u8 chall_text[253];
2717 };
2718
2719 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2720 {
2721         int old_state = priv->station_state;
2722
2723         if (new_state == old_state)
2724                 return;
2725
2726         priv->station_state = new_state;
2727
2728         if (new_state == STATION_STATE_READY) {
2729                 netif_start_queue(priv->dev);
2730                 netif_carrier_on(priv->dev);
2731         }
2732
2733         if (old_state == STATION_STATE_READY) {
2734                 netif_carrier_off(priv->dev);
2735                 if (netif_running(priv->dev))
2736                         netif_stop_queue(priv->dev);
2737                 priv->last_beacon_timestamp = 0;
2738         }
2739 }
2740
2741 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2742 {
2743         struct {
2744                 u8 BSSID[ETH_ALEN];
2745                 u8 SSID[MAX_SSID_LENGTH];
2746                 u8 scan_type;
2747                 u8 channel;
2748                 __le16 BSS_type;
2749                 __le16 min_channel_time;
2750                 __le16 max_channel_time;
2751                 u8 options;
2752                 u8 SSID_size;
2753         } cmd;
2754
2755         eth_broadcast_addr(cmd.BSSID);
2756
2757         if (priv->fast_scan) {
2758                 cmd.SSID_size = priv->SSID_size;
2759                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2760                 cmd.min_channel_time = cpu_to_le16(10);
2761                 cmd.max_channel_time = cpu_to_le16(50);
2762         } else {
2763                 priv->BSS_list_entries = 0;
2764                 cmd.SSID_size = 0;
2765                 cmd.min_channel_time = cpu_to_le16(10);
2766                 cmd.max_channel_time = cpu_to_le16(120);
2767         }
2768
2769         cmd.options = 0;
2770
2771         if (!specific_ssid)
2772                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2773
2774         cmd.channel = (priv->channel & 0x7f);
2775         cmd.scan_type = SCAN_TYPE_ACTIVE;
2776         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2777                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2778
2779         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2780
2781         /* This must come after all hardware access to avoid being messed up
2782            by stuff happening in interrupt context after we leave STATE_DOWN */
2783         atmel_enter_state(priv, STATION_STATE_SCANNING);
2784 }
2785
2786 static void join(struct atmel_private *priv, int type)
2787 {
2788         struct {
2789                 u8 BSSID[6];
2790                 u8 SSID[MAX_SSID_LENGTH];
2791                 u8 BSS_type; /* this is a short in a scan command - weird */
2792                 u8 channel;
2793                 __le16 timeout;
2794                 u8 SSID_size;
2795                 u8 reserved;
2796         } cmd;
2797
2798         cmd.SSID_size = priv->SSID_size;
2799         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2800         memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2801         cmd.channel = (priv->channel & 0x7f);
2802         cmd.BSS_type = type;
2803         cmd.timeout = cpu_to_le16(2000);
2804
2805         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2806 }
2807
2808 static void start(struct atmel_private *priv, int type)
2809 {
2810         struct {
2811                 u8 BSSID[6];
2812                 u8 SSID[MAX_SSID_LENGTH];
2813                 u8 BSS_type;
2814                 u8 channel;
2815                 u8 SSID_size;
2816                 u8 reserved[3];
2817         } cmd;
2818
2819         cmd.SSID_size = priv->SSID_size;
2820         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2821         memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2822         cmd.BSS_type = type;
2823         cmd.channel = (priv->channel & 0x7f);
2824
2825         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2826 }
2827
2828 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2829                                 u8 channel)
2830 {
2831         int rejoin = 0;
2832         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2833                 SHORT_PREAMBLE : LONG_PREAMBLE;
2834
2835         if (priv->preamble != new) {
2836                 priv->preamble = new;
2837                 rejoin = 1;
2838                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2839         }
2840
2841         if (priv->channel != channel) {
2842                 priv->channel = channel;
2843                 rejoin = 1;
2844                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2845         }
2846
2847         if (rejoin) {
2848                 priv->station_is_associated = 0;
2849                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2850
2851                 if (priv->operating_mode == IW_MODE_INFRA)
2852                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2853                 else
2854                         join(priv, BSS_TYPE_AD_HOC);
2855         }
2856 }
2857
2858 static void send_authentication_request(struct atmel_private *priv, u16 system,
2859                                         u8 *challenge, int challenge_len)
2860 {
2861         struct ieee80211_hdr header;
2862         struct auth_body auth;
2863
2864         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2865         header.duration_id = cpu_to_le16(0x8000);
2866         header.seq_ctrl = 0;
2867         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2868         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2869         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2870
2871         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2872                 /* no WEP for authentication frames with TrSeqNo 1 */
2873                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2874
2875         auth.alg = cpu_to_le16(system);
2876
2877         auth.status = 0;
2878         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2879         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2880         priv->CurrentAuthentTransactionSeqNum += 2;
2881
2882         if (challenge_len != 0) {
2883                 auth.el_id = 16; /* challenge_text */
2884                 auth.chall_text_len = challenge_len;
2885                 memcpy(auth.chall_text, challenge, challenge_len);
2886                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2887         } else {
2888                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2889         }
2890 }
2891
2892 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2893 {
2894         u8 *ssid_el_p;
2895         int bodysize;
2896         struct ieee80211_hdr header;
2897         struct ass_req_format {
2898                 __le16 capability;
2899                 __le16 listen_interval;
2900                 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2901                 u8 ssid_el_id;
2902                 u8 ssid_len;
2903                 u8 ssid[MAX_SSID_LENGTH];
2904                 u8 sup_rates_el_id;
2905                 u8 sup_rates_len;
2906                 u8 rates[4];
2907         } body;
2908
2909         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2910                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2911         header.duration_id = cpu_to_le16(0x8000);
2912         header.seq_ctrl = 0;
2913
2914         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2915         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2916         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2917
2918         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2919         if (priv->wep_is_on)
2920                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2921         if (priv->preamble == SHORT_PREAMBLE)
2922                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2923
2924         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2925
2926         /* current AP address - only in reassoc frame */
2927         if (is_reassoc) {
2928                 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2929                 ssid_el_p = &body.ssid_el_id;
2930                 bodysize = 18 + priv->SSID_size;
2931         } else {
2932                 ssid_el_p = &body.ap[0];
2933                 bodysize = 12 + priv->SSID_size;
2934         }
2935
2936         ssid_el_p[0] = WLAN_EID_SSID;
2937         ssid_el_p[1] = priv->SSID_size;
2938         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2939         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2940         ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2941         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2942
2943         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2944 }
2945
2946 static int is_frame_from_current_bss(struct atmel_private *priv,
2947                                      struct ieee80211_hdr *header)
2948 {
2949         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2950                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2951         else
2952                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2953 }
2954
2955 static int retrieve_bss(struct atmel_private *priv)
2956 {
2957         int i;
2958         int max_rssi = -128;
2959         int max_index = -1;
2960
2961         if (priv->BSS_list_entries == 0)
2962                 return -1;
2963
2964         if (priv->connect_to_any_BSS) {
2965                 /* Select a BSS with the max-RSSI but of the same type and of
2966                    the same WEP mode and that it is not marked as 'bad' (i.e.
2967                    we had previously failed to connect to this BSS with the
2968                    settings that we currently use) */
2969                 priv->current_BSS = 0;
2970                 for (i = 0; i < priv->BSS_list_entries; i++) {
2971                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2972                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2973                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2974                             !(priv->BSSinfo[i].channel & 0x80)) {
2975                                 max_rssi = priv->BSSinfo[i].RSSI;
2976                                 priv->current_BSS = max_index = i;
2977                         }
2978                 }
2979                 return max_index;
2980         }
2981
2982         for (i = 0; i < priv->BSS_list_entries; i++) {
2983                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2984                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2985                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2986                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2987                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2988                                 max_rssi = priv->BSSinfo[i].RSSI;
2989                                 max_index = i;
2990                         }
2991                 }
2992         }
2993         return max_index;
2994 }
2995
2996 static void store_bss_info(struct atmel_private *priv,
2997                            struct ieee80211_hdr *header, u16 capability,
2998                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2999                            u8 *ssid, int is_beacon)
3000 {
3001         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3002         int i, index;
3003
3004         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3005                 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
3006                         index = i;
3007
3008         /* If we process a probe and an entry from this BSS exists
3009            we will update the BSS entry with the info from this BSS.
3010            If we process a beacon we will only update RSSI */
3011
3012         if (index == -1) {
3013                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3014                         return;
3015                 index = priv->BSS_list_entries++;
3016                 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
3017                 priv->BSSinfo[index].RSSI = rssi;
3018         } else {
3019                 if (rssi > priv->BSSinfo[index].RSSI)
3020                         priv->BSSinfo[index].RSSI = rssi;
3021                 if (is_beacon)
3022                         return;
3023         }
3024
3025         priv->BSSinfo[index].channel = channel;
3026         priv->BSSinfo[index].beacon_period = beacon_period;
3027         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3028         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3029         priv->BSSinfo[index].SSIDsize = ssid_len;
3030
3031         if (capability & WLAN_CAPABILITY_IBSS)
3032                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3033         else if (capability & WLAN_CAPABILITY_ESS)
3034                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3035
3036         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3037                 SHORT_PREAMBLE : LONG_PREAMBLE;
3038 }
3039
3040 static void authenticate(struct atmel_private *priv, u16 frame_len)
3041 {
3042         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3043         u16 status = le16_to_cpu(auth->status);
3044         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3045         u16 system = le16_to_cpu(auth->alg);
3046
3047         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3048                 /* no WEP */
3049                 if (priv->station_was_associated) {
3050                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3051                         send_association_request(priv, 1);
3052                         return;
3053                 } else {
3054                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3055                         send_association_request(priv, 0);
3056                         return;
3057                 }
3058         }
3059
3060         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3061                 int should_associate = 0;
3062                 /* WEP */
3063                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3064                         return;
3065
3066                 if (system == WLAN_AUTH_OPEN) {
3067                         if (trans_seq_no == 0x0002) {
3068                                 should_associate = 1;
3069                         }
3070                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3071                         if (trans_seq_no == 0x0002 &&
3072                             auth->el_id == WLAN_EID_CHALLENGE) {
3073                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3074                                 return;
3075                         } else if (trans_seq_no == 0x0004) {
3076                                 should_associate = 1;
3077                         }
3078                 }
3079
3080                 if (should_associate) {
3081                         if (priv->station_was_associated) {
3082                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3083                                 send_association_request(priv, 1);
3084                                 return;
3085                         } else {
3086                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3087                                 send_association_request(priv, 0);
3088                                 return;
3089                         }
3090                 }
3091         }
3092
3093         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3094                 /* Flip back and forth between WEP auth modes until the max
3095                  * authentication tries has been exceeded.
3096                  */
3097                 if (system == WLAN_AUTH_OPEN) {
3098                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3099                         priv->exclude_unencrypted = 1;
3100                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3101                         return;
3102                 } else if (system == WLAN_AUTH_SHARED_KEY
3103                            && priv->wep_is_on) {
3104                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3105                         priv->exclude_unencrypted = 0;
3106                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3107                         return;
3108                 } else if (priv->connect_to_any_BSS) {
3109                         int bss_index;
3110
3111                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3112
3113                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3114                                 atmel_join_bss(priv, bss_index);
3115                                 return;
3116                         }
3117                 }
3118         }
3119
3120         priv->AuthenticationRequestRetryCnt = 0;
3121         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3122         priv->station_is_associated = 0;
3123 }
3124
3125 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3126 {
3127         struct ass_resp_format {
3128                 __le16 capability;
3129                 __le16 status;
3130                 __le16 ass_id;
3131                 u8 el_id;
3132                 u8 length;
3133                 u8 rates[4];
3134         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3135
3136         u16 status = le16_to_cpu(ass_resp->status);
3137         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3138         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3139
3140         union iwreq_data wrqu;
3141
3142         if (frame_len < 8 + rates_len)
3143                 return;
3144
3145         if (status == WLAN_STATUS_SUCCESS) {
3146                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3147                         priv->AssociationRequestRetryCnt = 0;
3148                 else
3149                         priv->ReAssociationRequestRetryCnt = 0;
3150
3151                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3152                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3153                 atmel_set_mib(priv, Phy_Mib_Type,
3154                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3155                 if (priv->power_mode == 0) {
3156                         priv->listen_interval = 1;
3157                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3158                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3159                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3160                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3161                 } else {
3162                         priv->listen_interval = 2;
3163                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3164                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3165                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3166                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3167                 }
3168
3169                 priv->station_is_associated = 1;
3170                 priv->station_was_associated = 1;
3171                 atmel_enter_state(priv, STATION_STATE_READY);
3172
3173                 /* Send association event to userspace */
3174                 wrqu.data.length = 0;
3175                 wrqu.data.flags = 0;
3176                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3177                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3178                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3179
3180                 return;
3181         }
3182
3183         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3184             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3185             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3186             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3187                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3188                 priv->AssociationRequestRetryCnt++;
3189                 send_association_request(priv, 0);
3190                 return;
3191         }
3192
3193         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3194             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3195             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3196             priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3197                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3198                 priv->ReAssociationRequestRetryCnt++;
3199                 send_association_request(priv, 1);
3200                 return;
3201         }
3202
3203         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3204         priv->station_is_associated = 0;
3205
3206         if (priv->connect_to_any_BSS) {
3207                 int bss_index;
3208                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3209
3210                 if ((bss_index = retrieve_bss(priv)) != -1)
3211                         atmel_join_bss(priv, bss_index);
3212         }
3213 }
3214
3215 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3216 {
3217         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3218
3219         memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3220         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3221
3222         /* The WPA stuff cares about the current AP address */
3223         if (priv->use_wpa)
3224                 build_wpa_mib(priv);
3225
3226         /* When switching to AdHoc turn OFF Power Save if needed */
3227
3228         if (bss->BSStype == IW_MODE_ADHOC &&
3229             priv->operating_mode != IW_MODE_ADHOC &&
3230             priv->power_mode) {
3231                 priv->power_mode = 0;
3232                 priv->listen_interval = 1;
3233                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3234                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3235                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3236                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3237         }
3238
3239         priv->operating_mode = bss->BSStype;
3240         priv->channel = bss->channel & 0x7f;
3241         priv->beacon_period = bss->beacon_period;
3242
3243         if (priv->preamble != bss->preamble) {
3244                 priv->preamble = bss->preamble;
3245                 atmel_set_mib8(priv, Local_Mib_Type,
3246                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3247         }
3248
3249         if (!priv->wep_is_on && bss->UsingWEP) {
3250                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3251                 priv->station_is_associated = 0;
3252                 return;
3253         }
3254
3255         if (priv->wep_is_on && !bss->UsingWEP) {
3256                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3257                 priv->station_is_associated = 0;
3258                 return;
3259         }
3260
3261         atmel_enter_state(priv, STATION_STATE_JOINNING);
3262
3263         if (priv->operating_mode == IW_MODE_INFRA)
3264                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3265         else
3266                 join(priv, BSS_TYPE_AD_HOC);
3267 }
3268
3269 static void restart_search(struct atmel_private *priv)
3270 {
3271         int bss_index;
3272
3273         if (!priv->connect_to_any_BSS) {
3274                 atmel_scan(priv, 1);
3275         } else {
3276                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3277
3278                 if ((bss_index = retrieve_bss(priv)) != -1)
3279                         atmel_join_bss(priv, bss_index);
3280                 else
3281                         atmel_scan(priv, 0);
3282         }
3283 }
3284
3285 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3286 {
3287         u8 old = priv->wstats.qual.level;
3288         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3289
3290         switch (priv->firmware_type) {
3291         case ATMEL_FW_TYPE_502E:
3292                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3293                 break;
3294         default:
3295                 break;
3296         }
3297
3298         rssi = rssi * 100 / max_rssi;
3299         if ((rssi + old) % 2)
3300                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3301         else
3302                 priv->wstats.qual.level = (rssi + old) / 2;
3303         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3304         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3305 }
3306
3307 static void atmel_smooth_qual(struct atmel_private *priv)
3308 {
3309         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3310         while (time_diff--) {
3311                 priv->last_qual += HZ;
3312                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3313                 priv->wstats.qual.qual +=
3314                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3315                 priv->beacons_this_sec = 0;
3316         }
3317         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3318         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3319 }
3320
3321 /* deals with incoming management frames. */
3322 static void atmel_management_frame(struct atmel_private *priv,
3323                                    struct ieee80211_hdr *header,
3324                                    u16 frame_len, u8 rssi)
3325 {
3326         u16 subtype;
3327
3328         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3329         switch (subtype) {
3330         case IEEE80211_STYPE_BEACON:
3331         case IEEE80211_STYPE_PROBE_RESP:
3332
3333                 /* beacon frame has multiple variable-length fields -
3334                    never let an engineer loose with a data structure design. */
3335                 {
3336                         struct beacon_format {
3337                                 __le64 timestamp;
3338                                 __le16 interval;
3339                                 __le16 capability;
3340                                 u8 ssid_el_id;
3341                                 u8 ssid_length;
3342                                 /* ssid here */
3343                                 u8 rates_el_id;
3344                                 u8 rates_length;
3345                                 /* rates here */
3346                                 u8 ds_el_id;
3347                                 u8 ds_length;
3348                                 /* ds here */
3349                         } *beacon = (struct beacon_format *)priv->rx_buf;
3350
3351                         u8 channel, rates_length, ssid_length;
3352                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3353                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3354                         u16 capability = le16_to_cpu(beacon->capability);
3355                         u8 *beaconp = priv->rx_buf;
3356                         ssid_length = beacon->ssid_length;
3357                         /* this blows chunks. */
3358                         if (frame_len < 14 || frame_len < ssid_length + 15)
3359                                 return;
3360                         rates_length = beaconp[beacon->ssid_length + 15];
3361                         if (frame_len < ssid_length + rates_length + 18)
3362                                 return;
3363                         if (ssid_length >  MAX_SSID_LENGTH)
3364                                 return;
3365                         channel = beaconp[ssid_length + rates_length + 18];
3366
3367                         if (priv->station_state == STATION_STATE_READY) {
3368                                 smooth_rssi(priv, rssi);
3369                                 if (is_frame_from_current_bss(priv, header)) {
3370                                         priv->beacons_this_sec++;
3371                                         atmel_smooth_qual(priv);
3372                                         if (priv->last_beacon_timestamp) {
3373                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3374                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3375                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3376                                                 if (beacons > 1)
3377                                                         priv->wstats.miss.beacon += beacons - 1;
3378                                         }
3379                                         priv->last_beacon_timestamp = timestamp;
3380                                         handle_beacon_probe(priv, capability, channel);
3381                                 }
3382                         }
3383
3384                         if (priv->station_state == STATION_STATE_SCANNING)
3385                                 store_bss_info(priv, header, capability,
3386                                                beacon_interval, channel, rssi,
3387                                                ssid_length,
3388                                                &beacon->rates_el_id,
3389                                                subtype == IEEE80211_STYPE_BEACON);
3390                 }
3391                 break;
3392
3393         case IEEE80211_STYPE_AUTH:
3394
3395                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3396                         authenticate(priv, frame_len);
3397
3398                 break;
3399
3400         case IEEE80211_STYPE_ASSOC_RESP:
3401         case IEEE80211_STYPE_REASSOC_RESP:
3402
3403                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3404                     priv->station_state == STATION_STATE_REASSOCIATING)
3405                         associate(priv, frame_len, subtype);
3406
3407                 break;
3408
3409         case IEEE80211_STYPE_DISASSOC:
3410                 if (priv->station_is_associated &&
3411                     priv->operating_mode == IW_MODE_INFRA &&
3412                     is_frame_from_current_bss(priv, header)) {
3413                         priv->station_was_associated = 0;
3414                         priv->station_is_associated = 0;
3415
3416                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3417                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3418                 }
3419
3420                 break;
3421
3422         case IEEE80211_STYPE_DEAUTH:
3423                 if (priv->operating_mode == IW_MODE_INFRA &&
3424                     is_frame_from_current_bss(priv, header)) {
3425                         priv->station_was_associated = 0;
3426
3427                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3428                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3429                 }
3430
3431                 break;
3432         }
3433 }
3434
3435 /* run when timer expires */
3436 static void atmel_management_timer(struct timer_list *t)
3437 {
3438         struct atmel_private *priv = from_timer(priv, t, management_timer);
3439         unsigned long flags;
3440
3441         /* Check if the card has been yanked. */
3442         if (priv->card && priv->present_callback &&
3443                 !(*priv->present_callback)(priv->card))
3444                 return;
3445
3446         spin_lock_irqsave(&priv->irqlock, flags);
3447
3448         switch (priv->station_state) {
3449
3450         case STATION_STATE_AUTHENTICATING:
3451                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3452                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3453                         priv->station_is_associated = 0;
3454                         priv->AuthenticationRequestRetryCnt = 0;
3455                         restart_search(priv);
3456                 } else {
3457                         int auth = WLAN_AUTH_OPEN;
3458                         priv->AuthenticationRequestRetryCnt++;
3459                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3460                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3461                         if (priv->wep_is_on && priv->exclude_unencrypted)
3462                                 auth = WLAN_AUTH_SHARED_KEY;
3463                         send_authentication_request(priv, auth, NULL, 0);
3464           }
3465           break;
3466
3467         case STATION_STATE_ASSOCIATING:
3468                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3469                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3470                         priv->station_is_associated = 0;
3471                         priv->AssociationRequestRetryCnt = 0;
3472                         restart_search(priv);
3473                 } else {
3474                         priv->AssociationRequestRetryCnt++;
3475                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3476                         send_association_request(priv, 0);
3477                 }
3478           break;
3479
3480         case STATION_STATE_REASSOCIATING:
3481                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3482                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3483                         priv->station_is_associated = 0;
3484                         priv->ReAssociationRequestRetryCnt = 0;
3485                         restart_search(priv);
3486                 } else {
3487                         priv->ReAssociationRequestRetryCnt++;
3488                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3489                         send_association_request(priv, 1);
3490                 }
3491                 break;
3492
3493         default:
3494                 break;
3495         }
3496
3497         spin_unlock_irqrestore(&priv->irqlock, flags);
3498 }
3499
3500 static void atmel_command_irq(struct atmel_private *priv)
3501 {
3502         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3503         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3504         int fast_scan;
3505         union iwreq_data wrqu;
3506
3507         if (status == CMD_STATUS_IDLE ||
3508             status == CMD_STATUS_IN_PROGRESS)
3509                 return;
3510
3511         switch (command) {
3512         case CMD_Start:
3513                 if (status == CMD_STATUS_COMPLETE) {
3514                         priv->station_was_associated = priv->station_is_associated;
3515                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3516                                       (u8 *)priv->CurrentBSSID, 6);
3517                         atmel_enter_state(priv, STATION_STATE_READY);
3518                 }
3519                 break;
3520
3521         case CMD_Scan:
3522                 fast_scan = priv->fast_scan;
3523                 priv->fast_scan = 0;
3524
3525                 if (status != CMD_STATUS_COMPLETE) {
3526                         atmel_scan(priv, 1);
3527                 } else {
3528                         int bss_index = retrieve_bss(priv);
3529                         int notify_scan_complete = 1;
3530                         if (bss_index != -1) {
3531                                 atmel_join_bss(priv, bss_index);
3532                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3533                                    priv->SSID_size != 0) {
3534                                 start(priv, BSS_TYPE_AD_HOC);
3535                         } else {
3536                                 priv->fast_scan = !fast_scan;
3537                                 atmel_scan(priv, 1);
3538                                 notify_scan_complete = 0;
3539                         }
3540                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3541                         if (notify_scan_complete) {
3542                                 wrqu.data.length = 0;
3543                                 wrqu.data.flags = 0;
3544                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3545                         }
3546                 }
3547                 break;
3548
3549         case CMD_SiteSurvey:
3550                 priv->fast_scan = 0;
3551
3552                 if (status != CMD_STATUS_COMPLETE)
3553                         return;
3554
3555                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3556                 if (priv->station_is_associated) {
3557                         atmel_enter_state(priv, STATION_STATE_READY);
3558                         wrqu.data.length = 0;
3559                         wrqu.data.flags = 0;
3560                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3561                 } else {
3562                         atmel_scan(priv, 1);
3563                 }
3564                 break;
3565
3566         case CMD_Join:
3567                 if (status == CMD_STATUS_COMPLETE) {
3568                         if (priv->operating_mode == IW_MODE_ADHOC) {
3569                                 priv->station_was_associated = priv->station_is_associated;
3570                                 atmel_enter_state(priv, STATION_STATE_READY);
3571                         } else {
3572                                 int auth = WLAN_AUTH_OPEN;
3573                                 priv->AuthenticationRequestRetryCnt = 0;
3574                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3575
3576                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3577                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3578                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3579                                         auth = WLAN_AUTH_SHARED_KEY;
3580                                 send_authentication_request(priv, auth, NULL, 0);
3581                         }
3582                         return;
3583                 }
3584
3585                 atmel_scan(priv, 1);
3586         }
3587 }
3588
3589 static int atmel_wakeup_firmware(struct atmel_private *priv)
3590 {
3591         struct host_info_struct *iface = &priv->host_info;
3592         u16 mr1, mr3;
3593         int i;
3594
3595         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3596                 atmel_set_gcr(priv->dev, GCR_REMAP);
3597
3598         /* wake up on-board processor */
3599         atmel_clear_gcr(priv->dev, 0x0040);
3600         atmel_write16(priv->dev, BSR, BSS_SRAM);
3601
3602         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3603                 mdelay(100);
3604
3605         /* and wait for it */
3606         for (i = LOOP_RETRY_LIMIT; i; i--) {
3607                 mr1 = atmel_read16(priv->dev, MR1);
3608                 mr3 = atmel_read16(priv->dev, MR3);
3609
3610                 if (mr3 & MAC_BOOT_COMPLETE)
3611                         break;
3612                 if (mr1 & MAC_BOOT_COMPLETE &&
3613                     priv->bus_type == BUS_TYPE_PCCARD)
3614                         break;
3615         }
3616
3617         if (i == 0) {
3618                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3619                 return -EIO;
3620         }
3621
3622         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3623                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3624                 return -ENODEV;
3625         }
3626
3627         /* now check for completion of MAC initialization through
3628            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3629            MAC initialization, check completion status, set interrupt mask,
3630            enables interrupts and calls Tx and Rx initialization functions */
3631
3632         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3633
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_INIT_COMPLETE)
3639                         break;
3640                 if (mr1 & MAC_INIT_COMPLETE &&
3641                     priv->bus_type == BUS_TYPE_PCCARD)
3642                         break;
3643         }
3644
3645         if (i == 0) {
3646                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3647                                 priv->dev->name);
3648                 return -EIO;
3649         }
3650
3651         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3652         if ((mr3 & MAC_INIT_COMPLETE) &&
3653             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3654                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3655                 return -EIO;
3656         }
3657         if ((mr1 & MAC_INIT_COMPLETE) &&
3658             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3659                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3660                 return -EIO;
3661         }
3662
3663         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3664                            priv->host_info_base, sizeof(*iface));
3665
3666         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3667         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3668         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3669         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3670         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3671         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3672         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3673         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3674         iface->build_version = le16_to_cpu(iface->build_version);
3675         iface->command_pos = le16_to_cpu(iface->command_pos);
3676         iface->major_version = le16_to_cpu(iface->major_version);
3677         iface->minor_version = le16_to_cpu(iface->minor_version);
3678         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3679         iface->mac_status = le16_to_cpu(iface->mac_status);
3680
3681         return 0;
3682 }
3683
3684 /* determine type of memory and MAC address */
3685 static int probe_atmel_card(struct net_device *dev)
3686 {
3687         int rc = 0;
3688         struct atmel_private *priv = netdev_priv(dev);
3689
3690         /* reset pccard */
3691         if (priv->bus_type == BUS_TYPE_PCCARD)
3692                 atmel_write16(dev, GCR, 0x0060);
3693
3694         atmel_write16(dev, GCR, 0x0040);
3695         mdelay(500);
3696
3697         if (atmel_read16(dev, MR2) == 0) {
3698                 /* No stored firmware so load a small stub which just
3699                    tells us the MAC address */
3700                 int i;
3701                 priv->card_type = CARD_TYPE_EEPROM;
3702                 atmel_write16(dev, BSR, BSS_IRAM);
3703                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3704                 atmel_set_gcr(dev, GCR_REMAP);
3705                 atmel_clear_gcr(priv->dev, 0x0040);
3706                 atmel_write16(dev, BSR, BSS_SRAM);
3707                 for (i = LOOP_RETRY_LIMIT; i; i--)
3708                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3709                                 break;
3710                 if (i == 0) {
3711                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3712                 } else {
3713                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3714                         /* got address, now squash it again until the network
3715                            interface is opened */
3716                         if (priv->bus_type == BUS_TYPE_PCCARD)
3717                                 atmel_write16(dev, GCR, 0x0060);
3718                         atmel_write16(dev, GCR, 0x0040);
3719                         rc = 1;
3720                 }
3721         } else if (atmel_read16(dev, MR4) == 0) {
3722                 /* Mac address easy in this case. */
3723                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3724                 atmel_write16(dev,  BSR, 1);
3725                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3726                 atmel_write16(dev,  BSR, 0x200);
3727                 rc = 1;
3728         } else {
3729                 /* Standard firmware in flash, boot it up and ask
3730                    for the Mac Address */
3731                 priv->card_type = CARD_TYPE_SPI_FLASH;
3732                 if (atmel_wakeup_firmware(priv) == 0) {
3733                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3734
3735                         /* got address, now squash it again until the network
3736                            interface is opened */
3737                         if (priv->bus_type == BUS_TYPE_PCCARD)
3738                                 atmel_write16(dev, GCR, 0x0060);
3739                         atmel_write16(dev, GCR, 0x0040);
3740                         rc = 1;
3741                 }
3742         }
3743
3744         if (rc) {
3745                 if (dev->dev_addr[0] == 0xFF) {
3746                         static const u8 default_mac[] = {
3747                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3748                         };
3749                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3750                         memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3751                 }
3752         }
3753
3754         return rc;
3755 }
3756
3757 /* Move the encyption information on the MIB structure.
3758    This routine is for the pre-WPA firmware: later firmware has
3759    a different format MIB and a different routine. */
3760 static void build_wep_mib(struct atmel_private *priv)
3761 {
3762         struct { /* NB this is matched to the hardware, don't change. */
3763                 u8 wep_is_on;
3764                 u8 default_key; /* 0..3 */
3765                 u8 reserved;
3766                 u8 exclude_unencrypted;
3767
3768                 u32 WEPICV_error_count;
3769                 u32 WEP_excluded_count;
3770
3771                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3772                 u8 encryption_level; /* 0, 1, 2 */
3773                 u8 reserved2[3];
3774         } mib;
3775         int i;
3776
3777         mib.wep_is_on = priv->wep_is_on;
3778         if (priv->wep_is_on) {
3779                 if (priv->wep_key_len[priv->default_key] > 5)
3780                         mib.encryption_level = 2;
3781                 else
3782                         mib.encryption_level = 1;
3783         } else {
3784                 mib.encryption_level = 0;
3785         }
3786
3787         mib.default_key = priv->default_key;
3788         mib.exclude_unencrypted = priv->exclude_unencrypted;
3789
3790         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3791                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3792
3793         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3794 }
3795
3796 static void build_wpa_mib(struct atmel_private *priv)
3797 {
3798         /* This is for the later (WPA enabled) firmware. */
3799
3800         struct { /* NB this is matched to the hardware, don't change. */
3801                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3802                 u8 receiver_address[ETH_ALEN];
3803                 u8 wep_is_on;
3804                 u8 default_key; /* 0..3 */
3805                 u8 group_key;
3806                 u8 exclude_unencrypted;
3807                 u8 encryption_type;
3808                 u8 reserved;
3809
3810                 u32 WEPICV_error_count;
3811                 u32 WEP_excluded_count;
3812
3813                 u8 key_RSC[4][8];
3814         } mib;
3815
3816         int i;
3817
3818         mib.wep_is_on = priv->wep_is_on;
3819         mib.exclude_unencrypted = priv->exclude_unencrypted;
3820         memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3821
3822         /* zero all the keys before adding in valid ones. */
3823         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3824
3825         if (priv->wep_is_on) {
3826                 /* There's a comment in the Atmel code to the effect that this
3827                    is only valid when still using WEP, it may need to be set to
3828                    something to use WPA */
3829                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3830
3831                 mib.default_key = mib.group_key = 255;
3832                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3833                         if (priv->wep_key_len[i] > 0) {
3834                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3835                                 if (i == priv->default_key) {
3836                                         mib.default_key = i;
3837                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3838                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3839                                 } else {
3840                                         mib.group_key = i;
3841                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3842                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3843                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3844                                 }
3845                         }
3846                 }
3847                 if (mib.default_key == 255)
3848                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3849                 if (mib.group_key == 255)
3850                         mib.group_key = mib.default_key;
3851
3852         }
3853
3854         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3855 }
3856
3857 static int reset_atmel_card(struct net_device *dev)
3858 {
3859         /* do everything necessary to wake up the hardware, including
3860            waiting for the lightning strike and throwing the knife switch....
3861
3862            set all the Mib values which matter in the card to match
3863            their settings in the atmel_private structure. Some of these
3864            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3865            can only be changed by tearing down the world and coming back through
3866            here.
3867
3868            This routine is also responsible for initialising some
3869            hardware-specific fields in the atmel_private structure,
3870            including a copy of the firmware's hostinfo structure
3871            which is the route into the rest of the firmware datastructures. */
3872
3873         struct atmel_private *priv = netdev_priv(dev);
3874         u8 configuration;
3875         int old_state = priv->station_state;
3876         int err = 0;
3877
3878         /* data to add to the firmware names, in priority order
3879            this implemenents firmware versioning */
3880
3881         static char *firmware_modifier[] = {
3882                 "-wpa",
3883                 "",
3884                 NULL
3885         };
3886
3887         /* reset pccard */
3888         if (priv->bus_type == BUS_TYPE_PCCARD)
3889                 atmel_write16(priv->dev, GCR, 0x0060);
3890
3891         /* stop card , disable interrupts */
3892         atmel_write16(priv->dev, GCR, 0x0040);
3893
3894         if (priv->card_type == CARD_TYPE_EEPROM) {
3895                 /* copy in firmware if needed */
3896                 const struct firmware *fw_entry = NULL;
3897                 const unsigned char *fw;
3898                 int len = priv->firmware_length;
3899                 if (!(fw = priv->firmware)) {
3900                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3901                                 if (strlen(priv->firmware_id) == 0) {
3902                                         printk(KERN_INFO
3903                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3904                                                dev->name);
3905                                         printk(KERN_INFO
3906                                                "%s: if not, use the firmware= module parameter.\n",
3907                                                dev->name);
3908                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3909                                 }
3910                                 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3911                                 if (err != 0) {
3912                                         printk(KERN_ALERT
3913                                                "%s: firmware %s is missing, cannot continue.\n",
3914                                                dev->name, priv->firmware_id);
3915                                         return err;
3916                                 }
3917                         } else {
3918                                 int fw_index = 0;
3919                                 int success = 0;
3920
3921                                 /* get firmware filename entry based on firmware type ID */
3922                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3923                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3924                                         fw_index++;
3925
3926                                 /* construct the actual firmware file name */
3927                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3928                                         int i;
3929                                         for (i = 0; firmware_modifier[i]; i++) {
3930                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3931                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3932                                                 priv->firmware_id[31] = '\0';
3933                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3934                                                         success = 1;
3935                                                         break;
3936                                                 }
3937                                         }
3938                                 }
3939                                 if (!success) {
3940                                         printk(KERN_ALERT
3941                                                "%s: firmware %s is missing, cannot start.\n",
3942                                                dev->name, priv->firmware_id);
3943                                         priv->firmware_id[0] = '\0';
3944                                         return -ENOENT;
3945                                 }
3946                         }
3947
3948                         fw = fw_entry->data;
3949                         len = fw_entry->size;
3950                 }
3951
3952                 if (len <= 0x6000) {
3953                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3954                         atmel_copy_to_card(priv->dev, 0, fw, len);
3955                         atmel_set_gcr(priv->dev, GCR_REMAP);
3956                 } else {
3957                         /* Remap */
3958                         atmel_set_gcr(priv->dev, GCR_REMAP);
3959                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3960                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3961                         atmel_write16(priv->dev, BSR, 0x2ff);
3962                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3963                 }
3964
3965                 release_firmware(fw_entry);
3966         }
3967
3968         err = atmel_wakeup_firmware(priv);
3969         if (err != 0)
3970                 return err;
3971
3972         /* Check the version and set the correct flag for wpa stuff,
3973            old and new firmware is incompatible.
3974            The pre-wpa 3com firmware reports major version 5,
3975            the wpa 3com firmware is major version 4 and doesn't need
3976            the 3com broken-ness filter. */
3977         priv->use_wpa = (priv->host_info.major_version == 4);
3978         priv->radio_on_broken = (priv->host_info.major_version == 5);
3979
3980         /* unmask all irq sources */
3981         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3982
3983         /* int Tx system and enable Tx */
3984         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3985         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3986         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3987         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3988
3989         priv->tx_desc_free = priv->host_info.tx_desc_count;
3990         priv->tx_desc_head = 0;
3991         priv->tx_desc_tail = 0;
3992         priv->tx_desc_previous = 0;
3993         priv->tx_free_mem = priv->host_info.tx_buff_size;
3994         priv->tx_buff_head = 0;
3995         priv->tx_buff_tail = 0;
3996
3997         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3998         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3999                                    configuration | FUNC_CTRL_TxENABLE);
4000
4001         /* init Rx system and enable */
4002         priv->rx_desc_head = 0;
4003
4004         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4005         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4006                                    configuration | FUNC_CTRL_RxENABLE);
4007
4008         if (!priv->radio_on_broken) {
4009                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4010                     CMD_STATUS_REJECTED_RADIO_OFF) {
4011                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
4012                                dev->name);
4013                         return -EIO;
4014                 }
4015         }
4016
4017         /* set up enough MIB values to run. */
4018         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4019         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
4020         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4021         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4022         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4023         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4024         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4025         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4026                       priv->dev->dev_addr, 6);
4027         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4028         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4029         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4030         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4031         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4032         if (priv->use_wpa)
4033                 build_wpa_mib(priv);
4034         else
4035                 build_wep_mib(priv);
4036
4037         if (old_state == STATION_STATE_READY) {
4038                 union iwreq_data wrqu;
4039
4040                 wrqu.data.length = 0;
4041                 wrqu.data.flags = 0;
4042                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4043                 eth_zero_addr(wrqu.ap_addr.sa_data);
4044                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4045         }
4046
4047         return 0;
4048 }
4049
4050 static void atmel_send_command(struct atmel_private *priv, int command,
4051                                void *cmd, int cmd_size)
4052 {
4053         if (cmd)
4054                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4055                                    cmd, cmd_size);
4056
4057         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4058         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4059 }
4060
4061 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4062                                    void *cmd, int cmd_size)
4063 {
4064         int i, status;
4065
4066         atmel_send_command(priv, command, cmd, cmd_size);
4067
4068         for (i = 5000; i; i--) {
4069                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4070                 if (status != CMD_STATUS_IDLE &&
4071                     status != CMD_STATUS_IN_PROGRESS)
4072                         break;
4073                 udelay(20);
4074         }
4075
4076         if (i == 0) {
4077                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4078                 status =  CMD_STATUS_HOST_ERROR;
4079         } else {
4080                 if (command != CMD_EnableRadio)
4081                         status = CMD_STATUS_COMPLETE;
4082         }
4083
4084         return status;
4085 }
4086
4087 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4088 {
4089         struct get_set_mib m;
4090         m.type = type;
4091         m.size = 1;
4092         m.index = index;
4093
4094         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4095         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4096 }
4097
4098 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4099 {
4100         struct get_set_mib m;
4101         m.type = type;
4102         m.size = 1;
4103         m.index = index;
4104         m.data[0] = data;
4105
4106         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4107 }
4108
4109 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4110                             u16 data)
4111 {
4112         struct get_set_mib m;
4113         m.type = type;
4114         m.size = 2;
4115         m.index = index;
4116         m.data[0] = data;
4117         m.data[1] = data >> 8;
4118
4119         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4120 }
4121
4122 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4123                           u8 *data, int data_len)
4124 {
4125         struct get_set_mib m;
4126         m.type = type;
4127         m.size = data_len;
4128         m.index = index;
4129
4130         if (data_len > MIB_MAX_DATA_BYTES)
4131                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4132
4133         memcpy(m.data, data, data_len);
4134         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4135 }
4136
4137 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4138                           u8 *data, int data_len)
4139 {
4140         struct get_set_mib m;
4141         m.type = type;
4142         m.size = data_len;
4143         m.index = index;
4144
4145         if (data_len > MIB_MAX_DATA_BYTES)
4146                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4147
4148         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4149         atmel_copy_to_host(priv->dev, data,
4150                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4151 }
4152
4153 static void atmel_writeAR(struct net_device *dev, u16 data)
4154 {
4155         int i;
4156         outw(data, dev->base_addr + AR);
4157         /* Address register appears to need some convincing..... */
4158         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4159                 outw(data, dev->base_addr + AR);
4160 }
4161
4162 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4163                                const unsigned char *src, u16 len)
4164 {
4165         int i;
4166         atmel_writeAR(dev, dest);
4167         if (dest % 2) {
4168                 atmel_write8(dev, DR, *src);
4169                 src++; len--;
4170         }
4171         for (i = len; i > 1 ; i -= 2) {
4172                 u8 lb = *src++;
4173                 u8 hb = *src++;
4174                 atmel_write16(dev, DR, lb | (hb << 8));
4175         }
4176         if (i)
4177                 atmel_write8(dev, DR, *src);
4178 }
4179
4180 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4181                                u16 src, u16 len)
4182 {
4183         int i;
4184         atmel_writeAR(dev, src);
4185         if (src % 2) {
4186                 *dest = atmel_read8(dev, DR);
4187                 dest++; len--;
4188         }
4189         for (i = len; i > 1 ; i -= 2) {
4190                 u16 hw = atmel_read16(dev, DR);
4191                 *dest++ = hw;
4192                 *dest++ = hw >> 8;
4193         }
4194         if (i)
4195                 *dest = atmel_read8(dev, DR);
4196 }
4197
4198 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4199 {
4200         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4201 }
4202
4203 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4204 {
4205         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4206 }
4207
4208 static int atmel_lock_mac(struct atmel_private *priv)
4209 {
4210         int i, j = 20;
4211  retry:
4212         for (i = 5000; i; i--) {
4213                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4214                         break;
4215                 udelay(20);
4216         }
4217
4218         if (!i)
4219                 return 0; /* timed out */
4220
4221         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4222         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4223                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4224                 if (!j--)
4225                         return 0; /* timed out */
4226                 goto retry;
4227         }
4228
4229         return 1;
4230 }
4231
4232 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4233 {
4234         atmel_writeAR(priv->dev, pos);
4235         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4236         atmel_write16(priv->dev, DR, data >> 16);
4237 }
4238
4239 /***************************************************************************/
4240 /* There follows the source form of the MAC address reading firmware       */
4241 /***************************************************************************/
4242 #if 0
4243
4244 /* Copyright 2003 Matthew T. Russotto                                      */
4245 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4246 /* included in "atmel wireless lan drivers" package                        */
4247 /**
4248     This file is part of net.russotto.AtmelMACFW, hereto referred to
4249     as AtmelMACFW
4250
4251     AtmelMACFW is free software; you can redistribute it and/or modify
4252     it under the terms of the GNU General Public License version 2
4253     as published by the Free Software Foundation.
4254
4255     AtmelMACFW is distributed in the hope that it will be useful,
4256     but WITHOUT ANY WARRANTY; without even the implied warranty of
4257     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4258     GNU General Public License for more details.
4259
4260     You should have received a copy of the GNU General Public License
4261     along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4262
4263 ****************************************************************************/
4264 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4265 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4266 /* It only works on SPI EEPROM versions of the card.                       */
4267
4268 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4269 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4270 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4271 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4272 /* MR4, for investigational purposes (maybe we can determine chip type     */
4273 /* from that?)                                                             */
4274
4275         .org 0
4276     .set MRBASE, 0x8000000
4277         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4278         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4279         .set SRAM_BASE,  0x02000000
4280         .set SP_BASE,    0x0F300000
4281         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4282         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4283         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4284         .set STACK_BASE, 0x5600
4285         .set SP_SR, 0x10
4286         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4287         .set SP_RDRF, 1 /* status register bit -- RDR full */
4288         .set SP_SWRST, 0x80
4289         .set SP_SPIEN, 0x1
4290         .set SP_CR, 0   /* control register */
4291         .set SP_MR, 4   /* mode register */
4292         .set SP_RDR, 0x08 /* Read Data Register */
4293         .set SP_TDR, 0x0C /* Transmit Data Register */
4294         .set SP_CSR0, 0x30 /* chip select registers */
4295         .set SP_CSR1, 0x34
4296         .set SP_CSR2, 0x38
4297         .set SP_CSR3, 0x3C
4298         .set NVRAM_CMD_RDSR, 5 /* read status register */
4299         .set NVRAM_CMD_READ, 3 /* read data */
4300         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4301         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4302                                   serial output, since SO is normally high.  But it
4303                                   does cause 8 clock cycles and thus 8 bits to be
4304                                   clocked in to the chip.  See Atmel's SPI
4305                                   controller (e.g. AT91M55800) timing and 4K
4306                                   SPI EEPROM manuals */
4307
4308         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4309         .set NVRAM_IMAGE, 0x02000200
4310         .set NVRAM_LENGTH, 0x0200
4311         .set MAC_ADDRESS_MIB, SRAM_BASE
4312         .set MAC_ADDRESS_LENGTH, 6
4313         .set MAC_BOOT_FLAG, 0x10
4314         .set MR1, 0
4315         .set MR2, 4
4316         .set MR3, 8
4317         .set MR4, 0xC
4318 RESET_VECTOR:
4319         b RESET_HANDLER
4320 UNDEF_VECTOR:
4321         b HALT1
4322 SWI_VECTOR:
4323         b HALT1
4324 IABORT_VECTOR:
4325         b HALT1
4326 DABORT_VECTOR:
4327 RESERVED_VECTOR:
4328         b HALT1
4329 IRQ_VECTOR:
4330         b HALT1
4331 FIQ_VECTOR:
4332         b HALT1
4333 HALT1:  b HALT1
4334 RESET_HANDLER:
4335         mov     r0, #CPSR_INITIAL
4336         msr     CPSR_c, r0      /* This is probably unnecessary */
4337
4338 /* I'm guessing this is initializing clock generator electronics for SPI */
4339         ldr     r0, =SPI_CGEN_BASE
4340         mov     r1, #0
4341         mov     r1, r1, lsl #3
4342         orr     r1, r1, #0
4343         str     r1, [r0]
4344         ldr     r1, [r0, #28]
4345         bic     r1, r1, #16
4346         str     r1, [r0, #28]
4347         mov     r1, #1
4348         str     r1, [r0, #8]
4349
4350         ldr     r0, =MRBASE
4351         mov     r1, #0
4352         strh    r1, [r0, #MR1]
4353         strh    r1, [r0, #MR2]
4354         strh    r1, [r0, #MR3]
4355         strh    r1, [r0, #MR4]
4356
4357         mov     sp, #STACK_BASE
4358         bl      SP_INIT
4359         mov     r0, #10
4360         bl      DELAY9
4361         bl      GET_MAC_ADDR
4362         bl      GET_WHOLE_NVRAM
4363         ldr     r0, =MRBASE
4364         ldr     r1, =MAC_ADDRESS_MIB
4365         strh    r1, [r0, #MR2]
4366         ldr     r1, =NVRAM_IMAGE
4367         strh    r1, [r0, #MR4]
4368         mov     r1, #MAC_BOOT_FLAG
4369         strh    r1, [r0, #MR3]
4370 HALT2:  b HALT2
4371 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4372 GET_WHOLE_NVRAM:
4373         stmdb   sp!, {lr}
4374         mov     r2, #0 /* 0th bytes of NVRAM */
4375         mov     r3, #NVRAM_LENGTH
4376         mov     r1, #0          /* not used in routine */
4377         ldr     r0, =NVRAM_IMAGE
4378         bl      NVRAM_XFER
4379         ldmia   sp!, {lr}
4380         bx      lr
4381 .endfunc
4382
4383 .func Get_MAC_Addr, GET_MAC_ADDR
4384 GET_MAC_ADDR:
4385         stmdb   sp!, {lr}
4386         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4387         mov     r3, #MAC_ADDRESS_LENGTH
4388         mov     r1, #0          /* not used in routine */
4389         ldr     r0, =MAC_ADDRESS_MIB
4390         bl      NVRAM_XFER
4391         ldmia   sp!, {lr}
4392         bx      lr
4393 .endfunc
4394 .ltorg
4395 .func Delay9, DELAY9
4396 DELAY9:
4397         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4398 DELAYLOOP:
4399         beq     DELAY9_done
4400         subs    r0, r0, #1
4401         b       DELAYLOOP
4402 DELAY9_done:
4403         bx      lr
4404 .endfunc
4405
4406 .func SP_Init, SP_INIT
4407 SP_INIT:
4408         mov     r1, #SP_SWRST
4409         ldr     r0, =SP_BASE
4410         str     r1, [r0, #SP_CR] /* reset the SPI */
4411         mov     r1, #0
4412         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4413         mov     r1, #SP_SPIEN
4414         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4415         str     r1, [r0, #SP_CR] /* enable the SPI */
4416
4417 /*  My guess would be this turns on the SPI clock */
4418         ldr     r3, =SPI_CGEN_BASE
4419         ldr     r1, [r3, #28]
4420         orr     r1, r1, #0x2000
4421         str     r1, [r3, #28]
4422
4423         ldr     r1, =0x2000c01
4424         str     r1, [r0, #SP_CSR0]
4425         ldr     r1, =0x2000201
4426         str     r1, [r0, #SP_CSR1]
4427         str     r1, [r0, #SP_CSR2]
4428         str     r1, [r0, #SP_CSR3]
4429         ldr     r1, [r0, #SP_SR]
4430         ldr     r0, [r0, #SP_RDR]
4431         bx      lr
4432 .endfunc
4433 .func NVRAM_Init, NVRAM_INIT
4434 NVRAM_INIT:
4435         ldr     r1, =SP_BASE
4436         ldr     r0, [r1, #SP_RDR]
4437         mov     r0, #NVRAM_CMD_RDSR
4438         str     r0, [r1, #SP_TDR]
4439 SP_loop1:
4440         ldr     r0, [r1, #SP_SR]
4441         tst     r0, #SP_TDRE
4442         beq     SP_loop1
4443
4444         mov     r0, #SPI_8CLOCKS
4445         str     r0, [r1, #SP_TDR]
4446 SP_loop2:
4447         ldr     r0, [r1, #SP_SR]
4448         tst     r0, #SP_TDRE
4449         beq     SP_loop2
4450
4451         ldr     r0, [r1, #SP_RDR]
4452 SP_loop3:
4453         ldr     r0, [r1, #SP_SR]
4454         tst     r0, #SP_RDRF
4455         beq     SP_loop3
4456
4457         ldr     r0, [r1, #SP_RDR]
4458         and     r0, r0, #255
4459         bx      lr
4460 .endfunc
4461
4462 .func NVRAM_Xfer, NVRAM_XFER
4463         /* r0 = dest address */
4464         /* r1 = not used */
4465         /* r2 = src address within NVRAM */
4466         /* r3 = length */
4467 NVRAM_XFER:
4468         stmdb   sp!, {r4, r5, lr}
4469         mov     r5, r0          /* save r0 (dest address) */
4470         mov     r4, r3          /* save r3 (length) */
4471         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4472         and     r0, r0, #8
4473         add     r0, r0, #NVRAM_CMD_READ
4474         ldr     r1, =NVRAM_SCRATCH
4475         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4476         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4477 _local1:
4478         bl      NVRAM_INIT
4479         tst     r0, #NVRAM_SR_RDY
4480         bne     _local1
4481         mov     r0, #20
4482         bl      DELAY9
4483         mov     r2, r4          /* length */
4484         mov     r1, r5          /* dest address */
4485         mov     r0, #2          /* bytes to transfer in command */
4486         bl      NVRAM_XFER2
4487         ldmia   sp!, {r4, r5, lr}
4488         bx      lr
4489 .endfunc
4490
4491 .func NVRAM_Xfer2, NVRAM_XFER2
4492 NVRAM_XFER2:
4493         stmdb   sp!, {r4, r5, r6, lr}
4494         ldr     r4, =SP_BASE
4495         mov     r3, #0
4496         cmp     r0, #0
4497         bls     _local2
4498         ldr     r5, =NVRAM_SCRATCH
4499 _local4:
4500         ldrb    r6, [r5, r3]
4501         str     r6, [r4, #SP_TDR]
4502 _local3:
4503         ldr     r6, [r4, #SP_SR]
4504         tst     r6, #SP_TDRE
4505         beq     _local3
4506         add     r3, r3, #1
4507         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4508         blo     _local4
4509 _local2:
4510         mov     r3, #SPI_8CLOCKS
4511         str     r3, [r4, #SP_TDR]
4512         ldr     r0, [r4, #SP_RDR]
4513 _local5:
4514         ldr     r0, [r4, #SP_SR]
4515         tst     r0, #SP_RDRF
4516         beq     _local5
4517         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 */
4518         mov     r0, #0
4519         cmp     r2, #0  /* r2 is # of bytes to copy in */
4520         bls     _local6
4521 _local7:
4522         ldr     r5, [r4, #SP_SR]
4523         tst     r5, #SP_TDRE
4524         beq     _local7
4525         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4526 _local8:
4527         ldr     r5, [r4, #SP_SR]
4528         tst     r5, #SP_RDRF
4529         beq     _local8
4530         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4531         strb    r5, [r1], #1 /* postindexed */
4532         add     r0, r0, #1
4533         cmp     r0, r2
4534         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4535 _local6:
4536         mov     r0, #200
4537         bl      DELAY9
4538         ldmia   sp!, {r4, r5, r6, lr}
4539         bx      lr
4540 #endif