git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/atmel.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003-2004 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12     extensions, (C) Jean Tourrilhes.
  13
  14     The firmware module for reading the MAC address of the card comes from
  15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17     This file contains the module in binary form and, under the terms
  18     of the GPL, in source form. The source is located at the end of the file.
  19
  20     This program is free software; you can redistribute it and/or modify
  21     it under the terms of the GNU General Public License as published by
  22     the Free Software Foundation; either version 2 of the License, or
  23     (at your option) any later version.
  24
  25     This software is distributed in the hope that it will be useful,
  26     but WITHOUT ANY WARRANTY; without even the implied warranty of
  27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28     GNU General Public License for more details.
  29
  30     You should have received a copy of the GNU General Public License
  31     along with Atmel wireless lan drivers; if not, write to the Free Software
  32     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  36
  37     Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
  38     hardware used during development of this driver.
  39
  40 ******************************************************************************/
  41
  42 #include <linux/init.h>
  43
  44 #include <linux/kernel.h>
  45 #include <linux/ptrace.h>
  46 #include <linux/slab.h>
  47 #include <linux/string.h>
  48 #include <linux/ctype.h>
  49 #include <linux/timer.h>
  50 #include <asm/io.h>
  51 #include <asm/system.h>
  52 #include <asm/uaccess.h>
  53 #include <linux/module.h>
  54 #include <linux/netdevice.h>
  55 #include <linux/etherdevice.h>
  56 #include <linux/skbuff.h>
  57 #include <linux/if_arp.h>
  58 #include <linux/ioport.h>
  59 #include <linux/fcntl.h>
  60 #include <linux/delay.h>
  61 #include <linux/wireless.h>
  62 #include <net/iw_handler.h>
  63 #include <linux/byteorder/generic.h>
  64 #include <linux/crc32.h>
  65 #include <linux/proc_fs.h>
  66 #include <linux/device.h>
  67 #include <linux/moduleparam.h>
  68 #include <linux/firmware.h>
  69 #include <net/ieee80211.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
 102 #define MAX_SSID_LENGTH 32
 103 #define MGMT_JIFFIES (256 * HZ / 100)
 104
 105 #define MAX_BSS_ENTRIES 64
 106
 107 /* registers */
 108 #define GCR  0x00    //      (SIR0)  General Configuration Register
 109 #define BSR  0x02    //      (SIR1)  Bank Switching Select Register
 110 #define AR   0x04
 111 #define DR   0x08
 112 #define MR1  0x12    //      Mirror Register 1
 113 #define MR2  0x14    //      Mirror Register 2
 114 #define MR3  0x16    //      Mirror Register 3
 115 #define MR4  0x18    //      Mirror Register 4
 116
 117 #define GPR1                            0x0c
 118 #define GPR2                            0x0e
 119 #define GPR3                            0x10
 120 //
 121 // Constants for the GCR register.
 122 //
 123 #define GCR_REMAP     0x0400          // Remap internal SRAM to 0
 124 #define GCR_SWRES     0x0080          // BIU reset (ARM and PAI are NOT reset)
 125 #define GCR_CORES     0x0060          // Core Reset (ARM and PAI are reset)
 126 #define GCR_ENINT     0x0002          // Enable Interrupts
 127 #define GCR_ACKINT    0x0008          // Acknowledge Interrupts
 128
 129 #define BSS_SRAM      0x0200          // AMBA module selection --> SRAM
 130 #define BSS_IRAM      0x0100          // AMBA module selection --> IRAM
 131 //
 132 // Constants for the MR registers.
 133 //
 134 #define MAC_INIT_COMPLETE       0x0001        // MAC init has been completed
 135 #define MAC_BOOT_COMPLETE       0x0010        // MAC boot has been completed
 136 #define MAC_INIT_OK             0x0002        // MAC boot has been completed
 137
 138 #define MIB_MAX_DATA_BYTES    212
 139 #define MIB_HEADER_SIZE       4    /* first four fields */
 140
 141 struct get_set_mib {
 142         u8 type;
 143         u8 size;
 144         u8 index;
 145         u8 reserved;
 146         u8 data[MIB_MAX_DATA_BYTES];
 147 };
 148
 149 struct rx_desc {
 150         u32          Next;
 151         u16          MsduPos;
 152         u16          MsduSize;
 153
 154         u8           State;
 155         u8           Status;
 156         u8           Rate;
 157         u8           Rssi;
 158         u8           LinkQuality;
 159         u8           PreambleType;
 160         u16          Duration;
 161         u32          RxTime;
 162 };
 163
 164 #define RX_DESC_FLAG_VALID       0x80
 165 #define RX_DESC_FLAG_CONSUMED    0x40
 166 #define RX_DESC_FLAG_IDLE        0x00
 167
 168 #define RX_STATUS_SUCCESS        0x00
 169
 170 #define RX_DESC_MSDU_POS_OFFSET      4
 171 #define RX_DESC_MSDU_SIZE_OFFSET     6
 172 #define RX_DESC_FLAGS_OFFSET         8
 173 #define RX_DESC_STATUS_OFFSET        9
 174 #define RX_DESC_RSSI_OFFSET          11
 175 #define RX_DESC_LINK_QUALITY_OFFSET  12
 176 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
 177 #define RX_DESC_DURATION_OFFSET      14
 178 #define RX_DESC_RX_TIME_OFFSET       16
 179
 180 struct tx_desc {
 181         u32       NextDescriptor;
 182         u16       TxStartOfFrame;
 183         u16       TxLength;
 184
 185         u8        TxState;
 186         u8        TxStatus;
 187         u8        RetryCount;
 188
 189         u8        TxRate;
 190
 191         u8        KeyIndex;
 192         u8        ChiperType;
 193         u8        ChipreLength;
 194         u8        Reserved1;
 195
 196         u8        Reserved;
 197         u8        PacketType;
 198         u16       HostTxLength;
 199 };
 200
 201 #define TX_DESC_NEXT_OFFSET          0
 202 #define TX_DESC_POS_OFFSET           4
 203 #define TX_DESC_SIZE_OFFSET          6
 204 #define TX_DESC_FLAGS_OFFSET         8
 205 #define TX_DESC_STATUS_OFFSET        9
 206 #define TX_DESC_RETRY_OFFSET         10
 207 #define TX_DESC_RATE_OFFSET          11
 208 #define TX_DESC_KEY_INDEX_OFFSET     12
 209 #define TX_DESC_CIPHER_TYPE_OFFSET   13
 210 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
 211 #define TX_DESC_PACKET_TYPE_OFFSET   17
 212 #define TX_DESC_HOST_LENGTH_OFFSET   18
 213
 214 ///////////////////////////////////////////////////////
 215 // Host-MAC interface
 216 ///////////////////////////////////////////////////////
 217
 218 #define TX_STATUS_SUCCESS       0x00
 219
 220 #define TX_FIRM_OWN             0x80
 221 #define TX_DONE                 0x40
 222
 223 #define TX_ERROR                0x01
 224
 225 #define TX_PACKET_TYPE_DATA     0x01
 226 #define TX_PACKET_TYPE_MGMT     0x02
 227
 228 #define ISR_EMPTY               0x00        // no bits set in ISR
 229 #define ISR_TxCOMPLETE          0x01        // packet transmitted
 230 #define ISR_RxCOMPLETE          0x02        // packet received
 231 #define ISR_RxFRAMELOST         0x04        // Rx Frame lost
 232 #define ISR_FATAL_ERROR         0x08        // Fatal error
 233 #define ISR_COMMAND_COMPLETE    0x10        // command completed
 234 #define ISR_OUT_OF_RANGE        0x20        // command completed
 235 #define ISR_IBSS_MERGE          0x40        // (4.1.2.30): IBSS merge
 236 #define ISR_GENERIC_IRQ         0x80
 237
 238 #define Local_Mib_Type          0x01
 239 #define Mac_Address_Mib_Type    0x02
 240 #define Mac_Mib_Type            0x03
 241 #define Statistics_Mib_Type     0x04
 242 #define Mac_Mgmt_Mib_Type       0x05
 243 #define Mac_Wep_Mib_Type        0x06
 244 #define Phy_Mib_Type            0x07
 245 #define Multi_Domain_MIB        0x08
 246
 247 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 248 #define MAC_MIB_FRAG_THRESHOLD_POS            8
 249 #define MAC_MIB_RTS_THRESHOLD_POS             10
 250 #define MAC_MIB_SHORT_RETRY_POS               16
 251 #define MAC_MIB_LONG_RETRY_POS                17
 252 #define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
 253 #define MAC_MGMT_MIB_BEACON_PER_POS           0
 254 #define MAC_MGMT_MIB_STATION_ID_POS           6
 255 #define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
 256 #define MAC_MGMT_MIB_CUR_BSSID_POS            14
 257 #define MAC_MGMT_MIB_PS_MODE_POS              53
 258 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
 259 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
 260 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
 261 #define PHY_MIB_CHANNEL_POS                   14
 262 #define PHY_MIB_RATE_SET_POS                  20
 263 #define PHY_MIB_REG_DOMAIN_POS                26
 264 #define LOCAL_MIB_AUTO_TX_RATE_POS            3
 265 #define LOCAL_MIB_SSID_SIZE                   5
 266 #define LOCAL_MIB_TX_PROMISCUOUS_POS          6
 267 #define LOCAL_MIB_TX_MGMT_RATE_POS            7
 268 #define LOCAL_MIB_TX_CONTROL_RATE_POS         8
 269 #define LOCAL_MIB_PREAMBLE_TYPE               9
 270 #define MAC_ADDR_MIB_MAC_ADDR_POS             0
 271
 272 #define         CMD_Set_MIB_Vars              0x01
 273 #define         CMD_Get_MIB_Vars              0x02
 274 #define         CMD_Scan                      0x03
 275 #define         CMD_Join                      0x04
 276 #define         CMD_Start                     0x05
 277 #define         CMD_EnableRadio               0x06
 278 #define         CMD_DisableRadio              0x07
 279 #define         CMD_SiteSurvey                0x0B
 280
 281 #define         CMD_STATUS_IDLE                   0x00
 282 #define         CMD_STATUS_COMPLETE               0x01
 283 #define         CMD_STATUS_UNKNOWN                0x02
 284 #define         CMD_STATUS_INVALID_PARAMETER      0x03
 285 #define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
 286 #define         CMD_STATUS_TIME_OUT               0x07
 287 #define         CMD_STATUS_IN_PROGRESS            0x08
 288 #define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
 289 #define         CMD_STATUS_HOST_ERROR             0xFF
 290 #define         CMD_STATUS_BUSY                   0xFE
 291
 292 #define CMD_BLOCK_COMMAND_OFFSET        0
 293 #define CMD_BLOCK_STATUS_OFFSET         1
 294 #define CMD_BLOCK_PARAMETERS_OFFSET     4
 295
 296 #define SCAN_OPTIONS_SITE_SURVEY        0x80
 297
 298 #define MGMT_FRAME_BODY_OFFSET          24
 299 #define MAX_AUTHENTICATION_RETRIES      3
 300 #define MAX_ASSOCIATION_RETRIES         3
 301
 302 #define AUTHENTICATION_RESPONSE_TIME_OUT  1000
 303
 304 #define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
 305 #define LOOP_RETRY_LIMIT   500000
 306
 307 #define ACTIVE_MODE     1
 308 #define PS_MODE         2
 309
 310 #define MAX_ENCRYPTION_KEYS 4
 311 #define MAX_ENCRYPTION_KEY_SIZE 40
 312
 313 ///////////////////////////////////////////////////////////////////////////
 314 // 802.11 related definitions
 315 ///////////////////////////////////////////////////////////////////////////
 316
 317 //
 318 // Regulatory Domains
 319 //
 320
 321 #define REG_DOMAIN_FCC          0x10    //Channels      1-11    USA
 322 #define REG_DOMAIN_DOC          0x20    //Channel       1-11    Canada
 323 #define REG_DOMAIN_ETSI         0x30    //Channel       1-13    Europe (ex Spain/France)
 324 #define REG_DOMAIN_SPAIN        0x31    //Channel       10-11   Spain
 325 #define REG_DOMAIN_FRANCE       0x32    //Channel       10-13   France
 326 #define REG_DOMAIN_MKK          0x40    //Channel       14      Japan
 327 #define REG_DOMAIN_MKK1         0x41    //Channel       1-14    Japan(MKK1)
 328 #define REG_DOMAIN_ISRAEL       0x50    //Channel       3-9     ISRAEL
 329
 330 #define BSS_TYPE_AD_HOC         1
 331 #define BSS_TYPE_INFRASTRUCTURE 2
 332
 333 #define SCAN_TYPE_ACTIVE        0
 334 #define SCAN_TYPE_PASSIVE       1
 335
 336 #define LONG_PREAMBLE           0
 337 #define SHORT_PREAMBLE          1
 338 #define AUTO_PREAMBLE           2
 339
 340 #define DATA_FRAME_WS_HEADER_SIZE   30
 341
 342 /* promiscuous mode control */
 343 #define PROM_MODE_OFF                   0x0
 344 #define PROM_MODE_UNKNOWN               0x1
 345 #define PROM_MODE_CRC_FAILED            0x2
 346 #define PROM_MODE_DUPLICATED            0x4
 347 #define PROM_MODE_MGMT                  0x8
 348 #define PROM_MODE_CTRL                  0x10
 349 #define PROM_MODE_BAD_PROTOCOL          0x20
 350
 351 #define IFACE_INT_STATUS_OFFSET         0
 352 #define IFACE_INT_MASK_OFFSET           1
 353 #define IFACE_LOCKOUT_HOST_OFFSET       2
 354 #define IFACE_LOCKOUT_MAC_OFFSET        3
 355 #define IFACE_FUNC_CTRL_OFFSET          28
 356 #define IFACE_MAC_STAT_OFFSET           30
 357 #define IFACE_GENERIC_INT_TYPE_OFFSET   32
 358
 359 #define CIPHER_SUITE_NONE     0
 360 #define CIPHER_SUITE_WEP_64   1
 361 #define CIPHER_SUITE_TKIP     2
 362 #define CIPHER_SUITE_AES      3
 363 #define CIPHER_SUITE_CCX      4
 364 #define CIPHER_SUITE_WEP_128  5
 365
 366 //
 367 // IFACE MACROS & definitions
 368 //
 369 //
 370
 371 // FuncCtrl field:
 372 //
 373 #define FUNC_CTRL_TxENABLE              0x10
 374 #define FUNC_CTRL_RxENABLE              0x20
 375 #define FUNC_CTRL_INIT_COMPLETE         0x01
 376
 377 /* A stub firmware image which reads the MAC address from NVRAM on the card.
 378    For copyright information and source see the end of this file. */
 379 static u8 mac_reader[] = {
 380         0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
 381         0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
 382         0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 383         0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
 384         0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
 385         0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
 386         0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
 387         0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
 388         0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
 389         0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
 390         0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 391         0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 392         0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
 393         0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
 394         0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
 395         0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
 396         0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
 397         0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
 398         0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
 399         0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
 400         0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
 401         0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
 402         0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
 403         0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 404         0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
 405         0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
 406         0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
 407         0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
 408         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
 409         0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
 410         0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
 411         0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
 412         0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
 413         0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
 414         0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
 415         0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
 416         0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
 417         0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
 418         0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
 419         0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
 420         0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
 421         0x00,0x01,0x00,0x02
 422 };
 423
 424 struct atmel_private {
 425         void *card; /* Bus dependent stucture varies for PCcard */
 426         int (*present_callback)(void *); /* And callback which uses it */
 427         char firmware_id[32];
 428         AtmelFWType firmware_type;
 429         u8 *firmware;
 430         int firmware_length;
 431         struct timer_list management_timer;
 432         struct net_device *dev;
 433         struct device *sys_dev;
 434         struct iw_statistics wstats;
 435         struct net_device_stats stats;  // device stats
 436         spinlock_t irqlock, timerlock;  // spinlocks
 437         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 438         enum {
 439                 CARD_TYPE_PARALLEL_FLASH,
 440                 CARD_TYPE_SPI_FLASH,
 441                 CARD_TYPE_EEPROM
 442         } card_type;
 443         int do_rx_crc; /* If we need to CRC incoming packets */
 444         int probe_crc; /* set if we don't yet know */
 445         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 446         u16 rx_desc_head;
 447         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 448         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 449
 450         u16 frag_seq, frag_len, frag_no;
 451         u8 frag_source[6];
 452
 453         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 454         u8 group_cipher_suite, pairwise_cipher_suite;
 455         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 456         int wep_key_len[MAX_ENCRYPTION_KEYS];
 457         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 458
 459         u16 host_info_base;
 460         struct host_info_struct {
 461                 /* NB this is matched to the hardware, don't change. */
 462                 u8 volatile int_status;
 463                 u8 volatile int_mask;
 464                 u8 volatile lockout_host;
 465                 u8 volatile lockout_mac;
 466
 467                 u16 tx_buff_pos;
 468                 u16 tx_buff_size;
 469                 u16 tx_desc_pos;
 470                 u16 tx_desc_count;
 471
 472                 u16 rx_buff_pos;
 473                 u16 rx_buff_size;
 474                 u16 rx_desc_pos;
 475                 u16 rx_desc_count;
 476
 477                 u16 build_version;
 478                 u16 command_pos;
 479
 480                 u16 major_version;
 481                 u16 minor_version;
 482
 483                 u16 func_ctrl;
 484                 u16 mac_status;
 485                 u16 generic_IRQ_type;
 486                 u8  reserved[2];
 487         } host_info;
 488
 489         enum {
 490                 STATION_STATE_SCANNING,
 491                 STATION_STATE_JOINNING,
 492                 STATION_STATE_AUTHENTICATING,
 493                 STATION_STATE_ASSOCIATING,
 494                 STATION_STATE_READY,
 495                 STATION_STATE_REASSOCIATING,
 496                 STATION_STATE_DOWN,
 497                 STATION_STATE_MGMT_ERROR
 498         } station_state;
 499
 500         int operating_mode, power_mode;
 501         time_t last_qual;
 502         int beacons_this_sec;
 503         int channel;
 504         int reg_domain, config_reg_domain;
 505         int tx_rate;
 506         int auto_tx_rate;
 507         int rts_threshold;
 508         int frag_threshold;
 509         int long_retry, short_retry;
 510         int preamble;
 511         int default_beacon_period, beacon_period, listen_interval;
 512         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 513         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 514         enum {
 515                 SITE_SURVEY_IDLE,
 516                 SITE_SURVEY_IN_PROGRESS,
 517                 SITE_SURVEY_COMPLETED
 518         } site_survey_state;
 519         time_t last_survey;
 520
 521         int station_was_associated, station_is_associated;
 522         int fast_scan;
 523
 524         struct bss_info {
 525                 int channel;
 526                 int SSIDsize;
 527                 int RSSI;
 528                 int UsingWEP;
 529                 int preamble;
 530                 int beacon_period;
 531                 int BSStype;
 532                 u8 BSSID[6];
 533                 u8 SSID[MAX_SSID_LENGTH];
 534         } BSSinfo[MAX_BSS_ENTRIES];
 535         int BSS_list_entries, current_BSS;
 536         int connect_to_any_BSS;
 537         int SSID_size, new_SSID_size;
 538         u8 CurrentBSSID[6], BSSID[6];
 539         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 540         u64 last_beacon_timestamp;
 541         u8 rx_buf[MAX_WIRELESS_BODY];
 542 };
 543
 544 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
 545
 546 static const struct {
 547         int reg_domain;
 548         int min, max;
 549         char *name;
 550 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 551                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 552                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 553                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 554                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 555                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 556                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 557                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 558
 559 static void build_wpa_mib(struct atmel_private *priv);
 560 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 561 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 562                                unsigned char *src, u16 len);
 563 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 564                                u16 src, u16 len);
 565 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 566 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 567 static int atmel_lock_mac(struct atmel_private *priv);
 568 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 569 static void atmel_command_irq(struct atmel_private *priv);
 570 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 571 static void atmel_management_frame(struct atmel_private *priv,
 572                                    struct ieee80211_hdr_4addr *header,
 573                                    u16 frame_len, u8 rssi);
 574 static void atmel_management_timer(u_long a);
 575 static void atmel_send_command(struct atmel_private *priv, int command,
 576                                void *cmd, int cmd_size);
 577 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 578                                    void *cmd, int cmd_size);
 579 static void atmel_transmit_management_frame(struct atmel_private *priv,
 580                                             struct ieee80211_hdr_4addr *header,
 581                                             u8 *body, int body_len);
 582
 583 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 584 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 585                            u8 data);
 586 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 587                             u16 data);
 588 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 589                           u8 *data, int data_len);
 590 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 591                           u8 *data, int data_len);
 592 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 593 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 594 static void atmel_smooth_qual(struct atmel_private *priv);
 595 static void atmel_writeAR(struct net_device *dev, u16 data);
 596 static int probe_atmel_card(struct net_device *dev);
 597 static int reset_atmel_card(struct net_device *dev);
 598 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 599 int atmel_open (struct net_device *dev);
 600
 601 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 602 {
 603         return priv->host_info_base + offset;
 604 }
 605
 606 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 607 {
 608         return priv->host_info.command_pos + offset;
 609 }
 610
 611 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 612 {
 613         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 614 }
 615
 616 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 617 {
 618         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 619 }
 620
 621 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 622 {
 623         return inb(dev->base_addr + offset);
 624 }
 625
 626 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 627 {
 628         outb(data, dev->base_addr + offset);
 629 }
 630
 631 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 632 {
 633         return inw(dev->base_addr + offset);
 634 }
 635
 636 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 637 {
 638         outw(data, dev->base_addr + offset);
 639 }
 640
 641 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 642 {
 643         atmel_writeAR(priv->dev, pos);
 644         return atmel_read8(priv->dev, DR);
 645 }
 646
 647 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 648 {
 649         atmel_writeAR(priv->dev, pos);
 650         atmel_write8(priv->dev, DR, data);
 651 }
 652
 653 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 654 {
 655         atmel_writeAR(priv->dev, pos);
 656         return atmel_read16(priv->dev, DR);
 657 }
 658
 659 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 660 {
 661         atmel_writeAR(priv->dev, pos);
 662         atmel_write16(priv->dev, DR, data);
 663 }
 664
 665 static const struct iw_handler_def atmel_handler_def;
 666
 667 static void tx_done_irq(struct atmel_private *priv)
 668 {
 669         int i;
 670
 671         for (i = 0;
 672              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 673                      i < priv->host_info.tx_desc_count;
 674              i++) {
 675                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 676                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 677                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 678
 679                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 680
 681                 priv->tx_free_mem += msdu_size;
 682                 priv->tx_desc_free++;
 683
 684                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 685                         priv->tx_buff_head = 0;
 686                 else
 687                         priv->tx_buff_head += msdu_size;
 688
 689                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 690                         priv->tx_desc_head++ ;
 691                 else
 692                         priv->tx_desc_head = 0;
 693
 694                 if (type == TX_PACKET_TYPE_DATA) {
 695                         if (status == TX_STATUS_SUCCESS)
 696                                 priv->stats.tx_packets++;
 697                         else
 698                                 priv->stats.tx_errors++;
 699                         netif_wake_queue(priv->dev);
 700                 }
 701         }
 702 }
 703
 704 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 705 {
 706         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 707
 708         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 709                 return 0;
 710
 711         if (bottom_free >= len)
 712                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 713
 714         if (priv->tx_free_mem - bottom_free >= len) {
 715                 priv->tx_buff_tail = 0;
 716                 return priv->host_info.tx_buff_pos;
 717         }
 718
 719         return 0;
 720 }
 721
 722 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 723                                  u16 len, u16 buff, u8 type)
 724 {
 725         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 726         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 727         if (!priv->use_wpa)
 728                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 729         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 730         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 731         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 732         if (priv->use_wpa) {
 733                 int cipher_type, cipher_length;
 734                 if (is_bcast) {
 735                         cipher_type = priv->group_cipher_suite;
 736                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 737                             cipher_type == CIPHER_SUITE_WEP_128)
 738                                 cipher_length = 8;
 739                         else if (cipher_type == CIPHER_SUITE_TKIP)
 740                                 cipher_length = 12;
 741                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 742                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 743                                 cipher_type = priv->pairwise_cipher_suite;
 744                                 cipher_length = 8;
 745                         } else {
 746                                 cipher_type = CIPHER_SUITE_NONE;
 747                                 cipher_length = 0;
 748                         }
 749                 } else {
 750                         cipher_type = priv->pairwise_cipher_suite;
 751                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 752                             cipher_type == CIPHER_SUITE_WEP_128)
 753                                 cipher_length = 8;
 754                         else if (cipher_type == CIPHER_SUITE_TKIP)
 755                                 cipher_length = 12;
 756                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 757                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 758                                 cipher_type = priv->group_cipher_suite;
 759                                 cipher_length = 8;
 760                         } else {
 761                                 cipher_type = CIPHER_SUITE_NONE;
 762                                 cipher_length = 0;
 763                         }
 764                 }
 765
 766                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 767                             cipher_type);
 768                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 769                             cipher_length);
 770         }
 771         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 772         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 773         if (priv->tx_desc_previous != priv->tx_desc_tail)
 774                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 775         priv->tx_desc_previous = priv->tx_desc_tail;
 776         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 777                 priv->tx_desc_tail++;
 778         else
 779                 priv->tx_desc_tail = 0;
 780         priv->tx_desc_free--;
 781         priv->tx_free_mem -= len;
 782 }
 783
 784 static int start_tx(struct sk_buff *skb, struct net_device *dev)
 785 {
 786         static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 787         struct atmel_private *priv = netdev_priv(dev);
 788         struct ieee80211_hdr_4addr header;
 789         unsigned long flags;
 790         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 791
 792         if (priv->card && priv->present_callback &&
 793             !(*priv->present_callback)(priv->card)) {
 794                 priv->stats.tx_errors++;
 795                 dev_kfree_skb(skb);
 796                 return 0;
 797         }
 798
 799         if (priv->station_state != STATION_STATE_READY) {
 800                 priv->stats.tx_errors++;
 801                 dev_kfree_skb(skb);
 802                 return 0;
 803         }
 804
 805         /* first ensure the timer func cannot run */
 806         spin_lock_bh(&priv->timerlock);
 807         /* then stop the hardware ISR */
 808         spin_lock_irqsave(&priv->irqlock, flags);
 809         /* nb doing the above in the opposite order will deadlock */
 810
 811         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 812            12 first bytes (containing DA/SA) and put them in the appropriate
 813            fields of the Wireless Header. Thus the packet length is then the
 814            initial + 18 (+30-12) */
 815
 816         if (!(buff = find_tx_buff(priv, len + 18))) {
 817                 priv->stats.tx_dropped++;
 818                 spin_unlock_irqrestore(&priv->irqlock, flags);
 819                 spin_unlock_bh(&priv->timerlock);
 820                 netif_stop_queue(dev);
 821                 return 1;
 822         }
 823
 824         frame_ctl = IEEE80211_FTYPE_DATA;
 825         header.duration_id = 0;
 826         header.seq_ctl = 0;
 827         if (priv->wep_is_on)
 828                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 829         if (priv->operating_mode == IW_MODE_ADHOC) {
 830                 skb_copy_from_linear_data(skb, &header.addr1, 6);
 831                 memcpy(&header.addr2, dev->dev_addr, 6);
 832                 memcpy(&header.addr3, priv->BSSID, 6);
 833         } else {
 834                 frame_ctl |= IEEE80211_FCTL_TODS;
 835                 memcpy(&header.addr1, priv->CurrentBSSID, 6);
 836                 memcpy(&header.addr2, dev->dev_addr, 6);
 837                 skb_copy_from_linear_data(skb, &header.addr3, 6);
 838         }
 839
 840         if (priv->use_wpa)
 841                 memcpy(&header.addr4, SNAP_RFC1024, 6);
 842
 843         header.frame_ctl = cpu_to_le16(frame_ctl);
 844         /* Copy the wireless header into the card */
 845         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 846         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 847         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 848         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 849
 850         /* low bit of first byte of destination tells us if broadcast */
 851         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 852         dev->trans_start = jiffies;
 853         priv->stats.tx_bytes += len;
 854
 855         spin_unlock_irqrestore(&priv->irqlock, flags);
 856         spin_unlock_bh(&priv->timerlock);
 857         dev_kfree_skb(skb);
 858
 859         return 0;
 860 }
 861
 862 static void atmel_transmit_management_frame(struct atmel_private *priv,
 863                                             struct ieee80211_hdr_4addr *header,
 864                                             u8 *body, int body_len)
 865 {
 866         u16 buff;
 867         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 868
 869         if (!(buff = find_tx_buff(priv, len)))
 870                 return;
 871
 872         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 873         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 874         priv->tx_buff_tail += len;
 875         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 876 }
 877
 878 static void fast_rx_path(struct atmel_private *priv,
 879                          struct ieee80211_hdr_4addr *header,
 880                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 881 {
 882         /* fast path: unfragmented packet copy directly into skbuf */
 883         u8 mac4[6];
 884         struct sk_buff  *skb;
 885         unsigned char *skbp;
 886
 887         /* get the final, mac 4 header field, this tells us encapsulation */
 888         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 889         msdu_size -= 6;
 890
 891         if (priv->do_rx_crc) {
 892                 crc = crc32_le(crc, mac4, 6);
 893                 msdu_size -= 4;
 894         }
 895
 896         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 897                 priv->stats.rx_dropped++;
 898                 return;
 899         }
 900
 901         skb_reserve(skb, 2);
 902         skbp = skb_put(skb, msdu_size + 12);
 903         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 904
 905         if (priv->do_rx_crc) {
 906                 u32 netcrc;
 907                 crc = crc32_le(crc, skbp + 12, msdu_size);
 908                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 909                 if ((crc ^ 0xffffffff) != netcrc) {
 910                         priv->stats.rx_crc_errors++;
 911                         dev_kfree_skb(skb);
 912                         return;
 913                 }
 914         }
 915
 916         memcpy(skbp, header->addr1, 6); /* destination address */
 917         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 918                 memcpy(&skbp[6], header->addr3, 6);
 919         else
 920                 memcpy(&skbp[6], header->addr2, 6); /* source address */
 921
 922         priv->dev->last_rx = jiffies;
 923         skb->protocol = eth_type_trans(skb, priv->dev);
 924         skb->ip_summed = CHECKSUM_NONE;
 925         netif_rx(skb);
 926         priv->stats.rx_bytes += 12 + msdu_size;
 927         priv->stats.rx_packets++;
 928 }
 929
 930 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 931    It doesn't matter that this is slow: it is only used to proble the first few
 932    packets. */
 933 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 934 {
 935         int i = msdu_size - 4;
 936         u32 netcrc, crc = 0xffffffff;
 937
 938         if (msdu_size < 4)
 939                 return 0;
 940
 941         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 942
 943         atmel_writeAR(priv->dev, packet_loc);
 944         while (i--) {
 945                 u8 octet = atmel_read8(priv->dev, DR);
 946                 crc = crc32_le(crc, &octet, 1);
 947         }
 948
 949         return (crc ^ 0xffffffff) == netcrc;
 950 }
 951
 952 static void frag_rx_path(struct atmel_private *priv,
 953                          struct ieee80211_hdr_4addr *header,
 954                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 955                          u8 frag_no, int more_frags)
 956 {
 957         u8 mac4[6];
 958         u8 source[6];
 959         struct sk_buff *skb;
 960
 961         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
 962                 memcpy(source, header->addr3, 6);
 963         else
 964                 memcpy(source, header->addr2, 6);
 965
 966         rx_packet_loc += 24; /* skip header */
 967
 968         if (priv->do_rx_crc)
 969                 msdu_size -= 4;
 970
 971         if (frag_no == 0) { /* first fragment */
 972                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
 973                 msdu_size -= 6;
 974                 rx_packet_loc += 6;
 975
 976                 if (priv->do_rx_crc)
 977                         crc = crc32_le(crc, mac4, 6);
 978
 979                 priv->frag_seq = seq_no;
 980                 priv->frag_no = 1;
 981                 priv->frag_len = msdu_size;
 982                 memcpy(priv->frag_source, source, 6);
 983                 memcpy(&priv->rx_buf[6], source, 6);
 984                 memcpy(priv->rx_buf, header->addr1, 6);
 985
 986                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 987
 988                 if (priv->do_rx_crc) {
 989                         u32 netcrc;
 990                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 991                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 992                         if ((crc ^ 0xffffffff) != netcrc) {
 993                                 priv->stats.rx_crc_errors++;
 994                                 memset(priv->frag_source, 0xff, 6);
 995                         }
 996                 }
 997
 998         } else if (priv->frag_no == frag_no &&
 999                    priv->frag_seq == seq_no &&
1000                    memcmp(priv->frag_source, source, 6) == 0) {
1001
1002                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1003                                    rx_packet_loc, msdu_size);
1004                 if (priv->do_rx_crc) {
1005                         u32 netcrc;
1006                         crc = crc32_le(crc,
1007                                        &priv->rx_buf[12 + priv->frag_len],
1008                                        msdu_size);
1009                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1010                         if ((crc ^ 0xffffffff) != netcrc) {
1011                                 priv->stats.rx_crc_errors++;
1012                                 memset(priv->frag_source, 0xff, 6);
1013                                 more_frags = 1; /* don't send broken assembly */
1014                         }
1015                 }
1016
1017                 priv->frag_len += msdu_size;
1018                 priv->frag_no++;
1019
1020                 if (!more_frags) { /* last one */
1021                         memset(priv->frag_source, 0xff, 6);
1022                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1023                                 priv->stats.rx_dropped++;
1024                         } else {
1025                                 skb_reserve(skb, 2);
1026                                 memcpy(skb_put(skb, priv->frag_len + 12),
1027                                        priv->rx_buf,
1028                                        priv->frag_len + 12);
1029                                 priv->dev->last_rx = jiffies;
1030                                 skb->protocol = eth_type_trans(skb, priv->dev);
1031                                 skb->ip_summed = CHECKSUM_NONE;
1032                                 netif_rx(skb);
1033                                 priv->stats.rx_bytes += priv->frag_len + 12;
1034                                 priv->stats.rx_packets++;
1035                         }
1036                 }
1037         } else
1038                 priv->wstats.discard.fragment++;
1039 }
1040
1041 static void rx_done_irq(struct atmel_private *priv)
1042 {
1043         int i;
1044         struct ieee80211_hdr_4addr header;
1045
1046         for (i = 0;
1047              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1048                      i < priv->host_info.rx_desc_count;
1049              i++) {
1050
1051                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1052                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1053                 u32 crc = 0xffffffff;
1054
1055                 if (status != RX_STATUS_SUCCESS) {
1056                         if (status == 0xc1) /* determined by experiment */
1057                                 priv->wstats.discard.nwid++;
1058                         else
1059                                 priv->stats.rx_errors++;
1060                         goto next;
1061                 }
1062
1063                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1064                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1065
1066                 if (msdu_size < 30) {
1067                         priv->stats.rx_errors++;
1068                         goto next;
1069                 }
1070
1071                 /* Get header as far as end of seq_ctl */
1072                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1073                 frame_ctl = le16_to_cpu(header.frame_ctl);
1074                 seq_control = le16_to_cpu(header.seq_ctl);
1075
1076                 /* probe for CRC use here if needed  once five packets have
1077                    arrived with the same crc status, we assume we know what's
1078                    happening and stop probing */
1079                 if (priv->probe_crc) {
1080                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1081                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1082                         } else {
1083                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1084                         }
1085                         if (priv->do_rx_crc) {
1086                                 if (priv->crc_ok_cnt++ > 5)
1087                                         priv->probe_crc = 0;
1088                         } else {
1089                                 if (priv->crc_ko_cnt++ > 5)
1090                                         priv->probe_crc = 0;
1091                         }
1092                 }
1093
1094                 /* don't CRC header when WEP in use */
1095                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1096                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1097                 }
1098                 msdu_size -= 24; /* header */
1099
1100                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1101                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1102                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1103                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1104
1105                         if (!more_fragments && packet_fragment_no == 0) {
1106                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1107                         } else {
1108                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1109                                              packet_sequence_no, packet_fragment_no, more_fragments);
1110                         }
1111                 }
1112
1113                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1114                         /* copy rest of packet into buffer */
1115                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1116
1117                         /* we use the same buffer for frag reassembly and control packets */
1118                         memset(priv->frag_source, 0xff, 6);
1119
1120                         if (priv->do_rx_crc) {
1121                                 /* last 4 octets is crc */
1122                                 msdu_size -= 4;
1123                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1124                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1125                                         priv->stats.rx_crc_errors++;
1126                                         goto next;
1127                                 }
1128                         }
1129
1130                         atmel_management_frame(priv, &header, msdu_size,
1131                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1132                 }
1133
1134 next:
1135                 /* release descriptor */
1136                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1137
1138                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1139                         priv->rx_desc_head++;
1140                 else
1141                         priv->rx_desc_head = 0;
1142         }
1143 }
1144
1145 static irqreturn_t service_interrupt(int irq, void *dev_id)
1146 {
1147         struct net_device *dev = (struct net_device *) dev_id;
1148         struct atmel_private *priv = netdev_priv(dev);
1149         u8 isr;
1150         int i = -1;
1151         static u8 irq_order[] = {
1152                 ISR_OUT_OF_RANGE,
1153                 ISR_RxCOMPLETE,
1154                 ISR_TxCOMPLETE,
1155                 ISR_RxFRAMELOST,
1156                 ISR_FATAL_ERROR,
1157                 ISR_COMMAND_COMPLETE,
1158                 ISR_IBSS_MERGE,
1159                 ISR_GENERIC_IRQ
1160         };
1161
1162         if (priv->card && priv->present_callback &&
1163             !(*priv->present_callback)(priv->card))
1164                 return IRQ_HANDLED;
1165
1166         /* In this state upper-level code assumes it can mess with
1167            the card unhampered by interrupts which may change register state.
1168            Note that even though the card shouldn't generate interrupts
1169            the inturrupt line may be shared. This allows card setup
1170            to go on without disabling interrupts for a long time. */
1171         if (priv->station_state == STATION_STATE_DOWN)
1172                 return IRQ_NONE;
1173
1174         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1175
1176         while (1) {
1177                 if (!atmel_lock_mac(priv)) {
1178                         /* failed to contact card */
1179                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1180                         return IRQ_HANDLED;
1181                 }
1182
1183                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1184                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1185
1186                 if (!isr) {
1187                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1188                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1189                 }
1190
1191                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1192
1193                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1194                         if (isr & irq_order[i])
1195                                 break;
1196
1197                 if (!atmel_lock_mac(priv)) {
1198                         /* failed to contact card */
1199                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1200                         return IRQ_HANDLED;
1201                 }
1202
1203                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1204                 isr ^= irq_order[i];
1205                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1206                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1207
1208                 switch (irq_order[i]) {
1209
1210                 case ISR_OUT_OF_RANGE:
1211                         if (priv->operating_mode == IW_MODE_INFRA &&
1212                             priv->station_state == STATION_STATE_READY) {
1213                                 priv->station_is_associated = 0;
1214                                 atmel_scan(priv, 1);
1215                         }
1216                         break;
1217
1218                 case ISR_RxFRAMELOST:
1219                         priv->wstats.discard.misc++;
1220                         /* fall through */
1221                 case ISR_RxCOMPLETE:
1222                         rx_done_irq(priv);
1223                         break;
1224
1225                 case ISR_TxCOMPLETE:
1226                         tx_done_irq(priv);
1227                         break;
1228
1229                 case ISR_FATAL_ERROR:
1230                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1231                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1232                         break;
1233
1234                 case ISR_COMMAND_COMPLETE:
1235                         atmel_command_irq(priv);
1236                         break;
1237
1238                 case ISR_IBSS_MERGE:
1239                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1240                                       priv->CurrentBSSID, 6);
1241                         /* The WPA stuff cares about the current AP address */
1242                         if (priv->use_wpa)
1243                                 build_wpa_mib(priv);
1244                         break;
1245                 case ISR_GENERIC_IRQ:
1246                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1247                         break;
1248                 }
1249         }
1250 }
1251
1252 static struct net_device_stats *atmel_get_stats(struct net_device *dev)
1253 {
1254         struct atmel_private *priv = netdev_priv(dev);
1255         return &priv->stats;
1256 }
1257
1258 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1259 {
1260         struct atmel_private *priv = netdev_priv(dev);
1261
1262         /* update the link quality here in case we are seeing no beacons
1263            at all to drive the process */
1264         atmel_smooth_qual(priv);
1265
1266         priv->wstats.status = priv->station_state;
1267
1268         if (priv->operating_mode == IW_MODE_INFRA) {
1269                 if (priv->station_state != STATION_STATE_READY) {
1270                         priv->wstats.qual.qual = 0;
1271                         priv->wstats.qual.level = 0;
1272                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1273                                         | IW_QUAL_LEVEL_INVALID);
1274                 }
1275                 priv->wstats.qual.noise = 0;
1276                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1277         } else {
1278                 /* Quality levels cannot be determined in ad-hoc mode,
1279                    because we can 'hear' more that one remote station. */
1280                 priv->wstats.qual.qual = 0;
1281                 priv->wstats.qual.level = 0;
1282                 priv->wstats.qual.noise = 0;
1283                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1284                                         | IW_QUAL_LEVEL_INVALID
1285                                         | IW_QUAL_NOISE_INVALID;
1286                 priv->wstats.miss.beacon = 0;
1287         }
1288
1289         return &priv->wstats;
1290 }
1291
1292 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1293 {
1294         if ((new_mtu < 68) || (new_mtu > 2312))
1295                 return -EINVAL;
1296         dev->mtu = new_mtu;
1297         return 0;
1298 }
1299
1300 static int atmel_set_mac_address(struct net_device *dev, void *p)
1301 {
1302         struct sockaddr *addr = p;
1303
1304         memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1305         return atmel_open(dev);
1306 }
1307
1308 EXPORT_SYMBOL(atmel_open);
1309
1310 int atmel_open(struct net_device *dev)
1311 {
1312         struct atmel_private *priv = netdev_priv(dev);
1313         int i, channel;
1314
1315         /* any scheduled timer is no longer needed and might screw things up.. */
1316         del_timer_sync(&priv->management_timer);
1317
1318         /* Interrupts will not touch the card once in this state... */
1319         priv->station_state = STATION_STATE_DOWN;
1320
1321         if (priv->new_SSID_size) {
1322                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1323                 priv->SSID_size = priv->new_SSID_size;
1324                 priv->new_SSID_size = 0;
1325         }
1326         priv->BSS_list_entries = 0;
1327
1328         priv->AuthenticationRequestRetryCnt = 0;
1329         priv->AssociationRequestRetryCnt = 0;
1330         priv->ReAssociationRequestRetryCnt = 0;
1331         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1332         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1333
1334         priv->site_survey_state = SITE_SURVEY_IDLE;
1335         priv->station_is_associated = 0;
1336
1337         if (!reset_atmel_card(dev))
1338                 return -EAGAIN;
1339
1340         if (priv->config_reg_domain) {
1341                 priv->reg_domain = priv->config_reg_domain;
1342                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1343         } else {
1344                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1345                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1346                         if (priv->reg_domain == channel_table[i].reg_domain)
1347                                 break;
1348                 if (i == ARRAY_SIZE(channel_table)) {
1349                         priv->reg_domain = REG_DOMAIN_MKK1;
1350                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1351                 }
1352         }
1353
1354         if ((channel = atmel_validate_channel(priv, priv->channel)))
1355                 priv->channel = channel;
1356
1357         /* this moves station_state on.... */
1358         atmel_scan(priv, 1);
1359
1360         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1361         return 0;
1362 }
1363
1364 static int atmel_close(struct net_device *dev)
1365 {
1366         struct atmel_private *priv = netdev_priv(dev);
1367
1368         /* Send event to userspace that we are disassociating */
1369         if (priv->station_state == STATION_STATE_READY) {
1370                 union iwreq_data wrqu;
1371
1372                 wrqu.data.length = 0;
1373                 wrqu.data.flags = 0;
1374                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1375                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1376                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1377         }
1378
1379         atmel_enter_state(priv, STATION_STATE_DOWN);
1380
1381         if (priv->bus_type == BUS_TYPE_PCCARD)
1382                 atmel_write16(dev, GCR, 0x0060);
1383         atmel_write16(dev, GCR, 0x0040);
1384         return 0;
1385 }
1386
1387 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1388 {
1389         /* check that channel is OK, if so return zero,
1390            else return suitable default channel */
1391         int i;
1392
1393         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1394                 if (priv->reg_domain == channel_table[i].reg_domain) {
1395                         if (channel >= channel_table[i].min &&
1396                             channel <= channel_table[i].max)
1397                                 return 0;
1398                         else
1399                                 return channel_table[i].min;
1400                 }
1401         return 0;
1402 }
1403
1404 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1405 {
1406         int i;
1407         char *p = buf;
1408         char *s, *r, *c;
1409
1410         p += sprintf(p, "Driver version:\t\t%d.%d\n",
1411                      DRIVER_MAJOR, DRIVER_MINOR);
1412
1413         if (priv->station_state != STATION_STATE_DOWN) {
1414                 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1415                                 "Firmware location:\t",
1416                              priv->host_info.major_version,
1417                              priv->host_info.minor_version,
1418                              priv->host_info.build_version);
1419
1420                 if (priv->card_type != CARD_TYPE_EEPROM)
1421                         p += sprintf(p, "on card\n");
1422                 else if (priv->firmware)
1423                         p += sprintf(p, "%s loaded by host\n",
1424                                      priv->firmware_id);
1425                 else
1426                         p += sprintf(p, "%s loaded by hotplug\n",
1427                                      priv->firmware_id);
1428
1429                 switch (priv->card_type) {
1430                 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1431                 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1432                 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1433                 default: c = "<unknown>";
1434                 }
1435
1436                 r = "<unknown>";
1437                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1438                         if (priv->reg_domain == channel_table[i].reg_domain)
1439                                 r = channel_table[i].name;
1440
1441                 p += sprintf(p, "MAC memory type:\t%s\n", c);
1442                 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1443                 p += sprintf(p, "Host CRC checking:\t%s\n",
1444                              priv->do_rx_crc ? "On" : "Off");
1445                 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1446                              priv->use_wpa ? "Yes" : "No");
1447         }
1448
1449         switch(priv->station_state) {
1450         case STATION_STATE_SCANNING: s = "Scanning"; break;
1451         case STATION_STATE_JOINNING: s = "Joining"; break;
1452         case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1453         case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1454         case STATION_STATE_READY: s = "Ready"; break;
1455         case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1456         case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1457         case STATION_STATE_DOWN: s = "Down"; break;
1458         default: s = "<unknown>";
1459         }
1460
1461         p += sprintf(p, "Current state:\t\t%s\n", s);
1462         return p - buf;
1463 }
1464
1465 static int atmel_read_proc(char *page, char **start, off_t off,
1466                            int count, int *eof, void *data)
1467 {
1468         struct atmel_private *priv = data;
1469         int len = atmel_proc_output (page, priv);
1470         if (len <= off+count) *eof = 1;
1471         *start = page + off;
1472         len -= off;
1473         if (len>count) len = count;
1474         if (len<0) len = 0;
1475         return len;
1476 }
1477
1478 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1479                                    const AtmelFWType fw_type,
1480                                    struct device *sys_dev,
1481                                    int (*card_present)(void *), void *card)
1482 {
1483         struct proc_dir_entry *ent;
1484         struct net_device *dev;
1485         struct atmel_private *priv;
1486         int rc;
1487
1488         /* Create the network device object. */
1489         dev = alloc_etherdev(sizeof(*priv));
1490         if (!dev) {
1491                 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1492                 return NULL;
1493         }
1494         if (dev_alloc_name(dev, dev->name) < 0) {
1495                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1496                 goto err_out_free;
1497         }
1498
1499         priv = netdev_priv(dev);
1500         priv->dev = dev;
1501         priv->sys_dev = sys_dev;
1502         priv->present_callback = card_present;
1503         priv->card = card;
1504         priv->firmware = NULL;
1505         priv->firmware_id[0] = '\0';
1506         priv->firmware_type = fw_type;
1507         if (firmware) /* module parameter */
1508                 strcpy(priv->firmware_id, firmware);
1509         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1510         priv->station_state = STATION_STATE_DOWN;
1511         priv->do_rx_crc = 0;
1512         /* For PCMCIA cards, some chips need CRC, some don't
1513            so we have to probe. */
1514         if (priv->bus_type == BUS_TYPE_PCCARD) {
1515                 priv->probe_crc = 1;
1516                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1517         } else
1518                 priv->probe_crc = 0;
1519         memset(&priv->stats, 0, sizeof(priv->stats));
1520         memset(&priv->wstats, 0, sizeof(priv->wstats));
1521         priv->last_qual = jiffies;
1522         priv->last_beacon_timestamp = 0;
1523         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1524         memset(priv->BSSID, 0, 6);
1525         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1526         priv->station_was_associated = 0;
1527
1528         priv->last_survey = jiffies;
1529         priv->preamble = LONG_PREAMBLE;
1530         priv->operating_mode = IW_MODE_INFRA;
1531         priv->connect_to_any_BSS = 0;
1532         priv->config_reg_domain = 0;
1533         priv->reg_domain = 0;
1534         priv->tx_rate = 3;
1535         priv->auto_tx_rate = 1;
1536         priv->channel = 4;
1537         priv->power_mode = 0;
1538         priv->SSID[0] = '\0';
1539         priv->SSID_size = 0;
1540         priv->new_SSID_size = 0;
1541         priv->frag_threshold = 2346;
1542         priv->rts_threshold = 2347;
1543         priv->short_retry = 7;
1544         priv->long_retry = 4;
1545
1546         priv->wep_is_on = 0;
1547         priv->default_key = 0;
1548         priv->encryption_level = 0;
1549         priv->exclude_unencrypted = 0;
1550         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1551         priv->use_wpa = 0;
1552         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1553         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1554
1555         priv->default_beacon_period = priv->beacon_period = 100;
1556         priv->listen_interval = 1;
1557
1558         init_timer(&priv->management_timer);
1559         spin_lock_init(&priv->irqlock);
1560         spin_lock_init(&priv->timerlock);
1561         priv->management_timer.function = atmel_management_timer;
1562         priv->management_timer.data = (unsigned long) dev;
1563
1564         dev->open = atmel_open;
1565         dev->stop = atmel_close;
1566         dev->change_mtu = atmel_change_mtu;
1567         dev->set_mac_address = atmel_set_mac_address;
1568         dev->hard_start_xmit = start_tx;
1569         dev->get_stats = atmel_get_stats;
1570         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1571         dev->do_ioctl = atmel_ioctl;
1572         dev->irq = irq;
1573         dev->base_addr = port;
1574
1575         SET_NETDEV_DEV(dev, sys_dev);
1576
1577         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1578                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1579                 goto err_out_free;
1580         }
1581
1582         if (!request_region(dev->base_addr, 32,
1583                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1584                 goto err_out_irq;
1585         }
1586
1587         if (register_netdev(dev))
1588                 goto err_out_res;
1589
1590         if (!probe_atmel_card(dev)){
1591                 unregister_netdev(dev);
1592                 goto err_out_res;
1593         }
1594
1595         netif_carrier_off(dev);
1596
1597         ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1598         if (!ent)
1599                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1600
1601         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
1602                dev->name, DRIVER_MAJOR, DRIVER_MINOR,
1603                dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1604                dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
1605
1606         SET_MODULE_OWNER(dev);
1607         return dev;
1608
1609 err_out_res:
1610         release_region( dev->base_addr, 32);
1611 err_out_irq:
1612         free_irq(dev->irq, dev);
1613 err_out_free:
1614         free_netdev(dev);
1615         return NULL;
1616 }
1617
1618 EXPORT_SYMBOL(init_atmel_card);
1619
1620 void stop_atmel_card(struct net_device *dev)
1621 {
1622         struct atmel_private *priv = netdev_priv(dev);
1623
1624         /* put a brick on it... */
1625         if (priv->bus_type == BUS_TYPE_PCCARD)
1626                 atmel_write16(dev, GCR, 0x0060);
1627         atmel_write16(dev, GCR, 0x0040);
1628
1629         del_timer_sync(&priv->management_timer);
1630         unregister_netdev(dev);
1631         remove_proc_entry("driver/atmel", NULL);
1632         free_irq(dev->irq, dev);
1633         kfree(priv->firmware);
1634         release_region(dev->base_addr, 32);
1635         free_netdev(dev);
1636 }
1637
1638 EXPORT_SYMBOL(stop_atmel_card);
1639
1640 static int atmel_set_essid(struct net_device *dev,
1641                            struct iw_request_info *info,
1642                            struct iw_point *dwrq,
1643                            char *extra)
1644 {
1645         struct atmel_private *priv = netdev_priv(dev);
1646
1647         /* Check if we asked for `any' */
1648         if(dwrq->flags == 0) {
1649                 priv->connect_to_any_BSS = 1;
1650         } else {
1651                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1652
1653                 priv->connect_to_any_BSS = 0;
1654
1655                 /* Check the size of the string */
1656                 if (dwrq->length > MAX_SSID_LENGTH)
1657                          return -E2BIG;
1658                 if (index != 0)
1659                         return -EINVAL;
1660
1661                 memcpy(priv->new_SSID, extra, dwrq->length);
1662                 priv->new_SSID_size = dwrq->length;
1663         }
1664
1665         return -EINPROGRESS;
1666 }
1667
1668 static int atmel_get_essid(struct net_device *dev,
1669                            struct iw_request_info *info,
1670                            struct iw_point *dwrq,
1671                            char *extra)
1672 {
1673         struct atmel_private *priv = netdev_priv(dev);
1674
1675         /* Get the current SSID */
1676         if (priv->new_SSID_size != 0) {
1677                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1678                 dwrq->length = priv->new_SSID_size;
1679         } else {
1680                 memcpy(extra, priv->SSID, priv->SSID_size);
1681                 dwrq->length = priv->SSID_size;
1682         }
1683
1684         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1685
1686         return 0;
1687 }
1688
1689 static int atmel_get_wap(struct net_device *dev,
1690                          struct iw_request_info *info,
1691                          struct sockaddr *awrq,
1692                          char *extra)
1693 {
1694         struct atmel_private *priv = netdev_priv(dev);
1695         memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1696         awrq->sa_family = ARPHRD_ETHER;
1697
1698         return 0;
1699 }
1700
1701 static int atmel_set_encode(struct net_device *dev,
1702                             struct iw_request_info *info,
1703                             struct iw_point *dwrq,
1704                             char *extra)
1705 {
1706         struct atmel_private *priv = netdev_priv(dev);
1707
1708         /* Basic checking: do we have a key to set ?
1709          * Note : with the new API, it's impossible to get a NULL pointer.
1710          * Therefore, we need to check a key size == 0 instead.
1711          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1712          * when no key is present (only change flags), but older versions
1713          * don't do it. - Jean II */
1714         if (dwrq->length > 0) {
1715                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1716                 int current_index = priv->default_key;
1717                 /* Check the size of the key */
1718                 if (dwrq->length > 13) {
1719                         return -EINVAL;
1720                 }
1721                 /* Check the index (none -> use current) */
1722                 if (index < 0 || index >= 4)
1723                         index = current_index;
1724                 else
1725                         priv->default_key = index;
1726                 /* Set the length */
1727                 if (dwrq->length > 5)
1728                         priv->wep_key_len[index] = 13;
1729                 else
1730                         if (dwrq->length > 0)
1731                                 priv->wep_key_len[index] = 5;
1732                         else
1733                                 /* Disable the key */
1734                                 priv->wep_key_len[index] = 0;
1735                 /* Check if the key is not marked as invalid */
1736                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1737                         /* Cleanup */
1738                         memset(priv->wep_keys[index], 0, 13);
1739                         /* Copy the key in the driver */
1740                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1741                 }
1742                 /* WE specify that if a valid key is set, encryption
1743                  * should be enabled (user may turn it off later)
1744                  * This is also how "iwconfig ethX key on" works */
1745                 if (index == current_index &&
1746                     priv->wep_key_len[index] > 0) {
1747                         priv->wep_is_on = 1;
1748                         priv->exclude_unencrypted = 1;
1749                         if (priv->wep_key_len[index] > 5) {
1750                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1751                                 priv->encryption_level = 2;
1752                         } else {
1753                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1754                                 priv->encryption_level = 1;
1755                         }
1756                 }
1757         } else {
1758                 /* Do we want to just set the transmit key index ? */
1759                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1760                 if (index >= 0 && index < 4) {
1761                         priv->default_key = index;
1762                 } else
1763                         /* Don't complain if only change the mode */
1764                         if (!dwrq->flags & IW_ENCODE_MODE) {
1765                                 return -EINVAL;
1766                         }
1767         }
1768         /* Read the flags */
1769         if (dwrq->flags & IW_ENCODE_DISABLED) {
1770                 priv->wep_is_on = 0;
1771                 priv->encryption_level = 0;
1772                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1773         } else {
1774                 priv->wep_is_on = 1;
1775                 if (priv->wep_key_len[priv->default_key] > 5) {
1776                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1777                         priv->encryption_level = 2;
1778                 } else {
1779                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1780                         priv->encryption_level = 1;
1781                 }
1782         }
1783         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1784                 priv->exclude_unencrypted = 1;
1785         if(dwrq->flags & IW_ENCODE_OPEN)
1786                 priv->exclude_unencrypted = 0;
1787
1788         return -EINPROGRESS;            /* Call commit handler */
1789 }
1790
1791 static int atmel_get_encode(struct net_device *dev,
1792                             struct iw_request_info *info,
1793                             struct iw_point *dwrq,
1794                             char *extra)
1795 {
1796         struct atmel_private *priv = netdev_priv(dev);
1797         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1798
1799         if (!priv->wep_is_on)
1800                 dwrq->flags = IW_ENCODE_DISABLED;
1801         else {
1802                 if (priv->exclude_unencrypted)
1803                         dwrq->flags = IW_ENCODE_RESTRICTED;
1804                 else
1805                         dwrq->flags = IW_ENCODE_OPEN;
1806         }
1807                 /* Which key do we want ? -1 -> tx index */
1808         if (index < 0 || index >= 4)
1809                 index = priv->default_key;
1810         dwrq->flags |= index + 1;
1811         /* Copy the key to the user buffer */
1812         dwrq->length = priv->wep_key_len[index];
1813         if (dwrq->length > 16) {
1814                 dwrq->length=0;
1815         } else {
1816                 memset(extra, 0, 16);
1817                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1818         }
1819
1820         return 0;
1821 }
1822
1823 static int atmel_set_encodeext(struct net_device *dev,
1824                             struct iw_request_info *info,
1825                             union iwreq_data *wrqu,
1826                             char *extra)
1827 {
1828         struct atmel_private *priv = netdev_priv(dev);
1829         struct iw_point *encoding = &wrqu->encoding;
1830         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1831         int idx, key_len, alg = ext->alg, set_key = 1;
1832
1833         /* Determine and validate the key index */
1834         idx = encoding->flags & IW_ENCODE_INDEX;
1835         if (idx) {
1836                 if (idx < 1 || idx > WEP_KEYS)
1837                         return -EINVAL;
1838                 idx--;
1839         } else
1840                 idx = priv->default_key;
1841
1842         if (encoding->flags & IW_ENCODE_DISABLED)
1843             alg = IW_ENCODE_ALG_NONE;
1844
1845         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1846                 priv->default_key = idx;
1847                 set_key = ext->key_len > 0 ? 1 : 0;
1848         }
1849
1850         if (set_key) {
1851                 /* Set the requested key first */
1852                 switch (alg) {
1853                 case IW_ENCODE_ALG_NONE:
1854                         priv->wep_is_on = 0;
1855                         priv->encryption_level = 0;
1856                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1857                         break;
1858                 case IW_ENCODE_ALG_WEP:
1859                         if (ext->key_len > 5) {
1860                                 priv->wep_key_len[idx] = 13;
1861                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1862                                 priv->encryption_level = 2;
1863                         } else if (ext->key_len > 0) {
1864                                 priv->wep_key_len[idx] = 5;
1865                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1866                                 priv->encryption_level = 1;
1867                         } else {
1868                                 return -EINVAL;
1869                         }
1870                         priv->wep_is_on = 1;
1871                         memset(priv->wep_keys[idx], 0, 13);
1872                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1873                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1874                         break;
1875                 default:
1876                         return -EINVAL;
1877                 }
1878         }
1879
1880         return -EINPROGRESS;
1881 }
1882
1883 static int atmel_get_encodeext(struct net_device *dev,
1884                             struct iw_request_info *info,
1885                             union iwreq_data *wrqu,
1886                             char *extra)
1887 {
1888         struct atmel_private *priv = netdev_priv(dev);
1889         struct iw_point *encoding = &wrqu->encoding;
1890         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1891         int idx, max_key_len;
1892
1893         max_key_len = encoding->length - sizeof(*ext);
1894         if (max_key_len < 0)
1895                 return -EINVAL;
1896
1897         idx = encoding->flags & IW_ENCODE_INDEX;
1898         if (idx) {
1899                 if (idx < 1 || idx > WEP_KEYS)
1900                         return -EINVAL;
1901                 idx--;
1902         } else
1903                 idx = priv->default_key;
1904
1905         encoding->flags = idx + 1;
1906         memset(ext, 0, sizeof(*ext));
1907
1908         if (!priv->wep_is_on) {
1909                 ext->alg = IW_ENCODE_ALG_NONE;
1910                 ext->key_len = 0;
1911                 encoding->flags |= IW_ENCODE_DISABLED;
1912         } else {
1913                 if (priv->encryption_level > 0)
1914                         ext->alg = IW_ENCODE_ALG_WEP;
1915                 else
1916                         return -EINVAL;
1917
1918                 ext->key_len = priv->wep_key_len[idx];
1919                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1920                 encoding->flags |= IW_ENCODE_ENABLED;
1921         }
1922
1923         return 0;
1924 }
1925
1926 static int atmel_set_auth(struct net_device *dev,
1927                                struct iw_request_info *info,
1928                                union iwreq_data *wrqu, char *extra)
1929 {
1930         struct atmel_private *priv = netdev_priv(dev);
1931         struct iw_param *param = &wrqu->param;
1932
1933         switch (param->flags & IW_AUTH_INDEX) {
1934         case IW_AUTH_WPA_VERSION:
1935         case IW_AUTH_CIPHER_PAIRWISE:
1936         case IW_AUTH_CIPHER_GROUP:
1937         case IW_AUTH_KEY_MGMT:
1938         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1939         case IW_AUTH_PRIVACY_INVOKED:
1940                 /*
1941                  * atmel does not use these parameters
1942                  */
1943                 break;
1944
1945         case IW_AUTH_DROP_UNENCRYPTED:
1946                 priv->exclude_unencrypted = param->value ? 1 : 0;
1947                 break;
1948
1949         case IW_AUTH_80211_AUTH_ALG: {
1950                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1951                                 priv->exclude_unencrypted = 1;
1952                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1953                                 priv->exclude_unencrypted = 0;
1954                         } else
1955                                 return -EINVAL;
1956                         break;
1957                 }
1958
1959         case IW_AUTH_WPA_ENABLED:
1960                 /* Silently accept disable of WPA */
1961                 if (param->value > 0)
1962                         return -EOPNOTSUPP;
1963                 break;
1964
1965         default:
1966                 return -EOPNOTSUPP;
1967         }
1968         return -EINPROGRESS;
1969 }
1970
1971 static int atmel_get_auth(struct net_device *dev,
1972                                struct iw_request_info *info,
1973                                union iwreq_data *wrqu, char *extra)
1974 {
1975         struct atmel_private *priv = netdev_priv(dev);
1976         struct iw_param *param = &wrqu->param;
1977
1978         switch (param->flags & IW_AUTH_INDEX) {
1979         case IW_AUTH_DROP_UNENCRYPTED:
1980                 param->value = priv->exclude_unencrypted;
1981                 break;
1982
1983         case IW_AUTH_80211_AUTH_ALG:
1984                 if (priv->exclude_unencrypted == 1)
1985                         param->value = IW_AUTH_ALG_SHARED_KEY;
1986                 else
1987                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1988                 break;
1989
1990         case IW_AUTH_WPA_ENABLED:
1991                 param->value = 0;
1992                 break;
1993
1994         default:
1995                 return -EOPNOTSUPP;
1996         }
1997         return 0;
1998 }
1999
2000
2001 static int atmel_get_name(struct net_device *dev,
2002                           struct iw_request_info *info,
2003                           char *cwrq,
2004                           char *extra)
2005 {
2006         strcpy(cwrq, "IEEE 802.11-DS");
2007         return 0;
2008 }
2009
2010 static int atmel_set_rate(struct net_device *dev,
2011                           struct iw_request_info *info,
2012                           struct iw_param *vwrq,
2013                           char *extra)
2014 {
2015         struct atmel_private *priv = netdev_priv(dev);
2016
2017         if (vwrq->fixed == 0) {
2018                 priv->tx_rate = 3;
2019                 priv->auto_tx_rate = 1;
2020         } else {
2021                 priv->auto_tx_rate = 0;
2022
2023                 /* Which type of value ? */
2024                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2025                         /* Setting by rate index */
2026                         priv->tx_rate = vwrq->value;
2027                 } else {
2028                 /* Setting by frequency value */
2029                         switch (vwrq->value) {
2030                         case  1000000: priv->tx_rate = 0; break;
2031                         case  2000000: priv->tx_rate = 1; break;
2032                         case  5500000: priv->tx_rate = 2; break;
2033                         case 11000000: priv->tx_rate = 3; break;
2034                         default: return -EINVAL;
2035                         }
2036                 }
2037         }
2038
2039         return -EINPROGRESS;
2040 }
2041
2042 static int atmel_set_mode(struct net_device *dev,
2043                           struct iw_request_info *info,
2044                           __u32 *uwrq,
2045                           char *extra)
2046 {
2047         struct atmel_private *priv = netdev_priv(dev);
2048
2049         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2050                 return -EINVAL;
2051
2052         priv->operating_mode = *uwrq;
2053         return -EINPROGRESS;
2054 }
2055
2056 static int atmel_get_mode(struct net_device *dev,
2057                           struct iw_request_info *info,
2058                           __u32 *uwrq,
2059                           char *extra)
2060 {
2061         struct atmel_private *priv = netdev_priv(dev);
2062
2063         *uwrq = priv->operating_mode;
2064         return 0;
2065 }
2066
2067 static int atmel_get_rate(struct net_device *dev,
2068                          struct iw_request_info *info,
2069                          struct iw_param *vwrq,
2070                          char *extra)
2071 {
2072         struct atmel_private *priv = netdev_priv(dev);
2073
2074         if (priv->auto_tx_rate) {
2075                 vwrq->fixed = 0;
2076                 vwrq->value = 11000000;
2077         } else {
2078                 vwrq->fixed = 1;
2079                 switch(priv->tx_rate) {
2080                 case 0: vwrq->value =  1000000; break;
2081                 case 1: vwrq->value =  2000000; break;
2082                 case 2: vwrq->value =  5500000; break;
2083                 case 3: vwrq->value = 11000000; break;
2084                 }
2085         }
2086         return 0;
2087 }
2088
2089 static int atmel_set_power(struct net_device *dev,
2090                            struct iw_request_info *info,
2091                            struct iw_param *vwrq,
2092                            char *extra)
2093 {
2094         struct atmel_private *priv = netdev_priv(dev);
2095         priv->power_mode = vwrq->disabled ? 0 : 1;
2096         return -EINPROGRESS;
2097 }
2098
2099 static int atmel_get_power(struct net_device *dev,
2100                            struct iw_request_info *info,
2101                            struct iw_param *vwrq,
2102                            char *extra)
2103 {
2104         struct atmel_private *priv = netdev_priv(dev);
2105         vwrq->disabled = priv->power_mode ? 0 : 1;
2106         vwrq->flags = IW_POWER_ON;
2107         return 0;
2108 }
2109
2110 static int atmel_set_retry(struct net_device *dev,
2111                            struct iw_request_info *info,
2112                            struct iw_param *vwrq,
2113                            char *extra)
2114 {
2115         struct atmel_private *priv = netdev_priv(dev);
2116
2117         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2118                 if (vwrq->flags & IW_RETRY_LONG)
2119                         priv->long_retry = vwrq->value;
2120                 else if (vwrq->flags & IW_RETRY_SHORT)
2121                         priv->short_retry = vwrq->value;
2122                 else {
2123                         /* No modifier : set both */
2124                         priv->long_retry = vwrq->value;
2125                         priv->short_retry = vwrq->value;
2126                 }
2127                 return -EINPROGRESS;
2128         }
2129
2130         return -EINVAL;
2131 }
2132
2133 static int atmel_get_retry(struct net_device *dev,
2134                            struct iw_request_info *info,
2135                            struct iw_param *vwrq,
2136                            char *extra)
2137 {
2138         struct atmel_private *priv = netdev_priv(dev);
2139
2140         vwrq->disabled = 0;      /* Can't be disabled */
2141
2142         /* Note : by default, display the short retry number */
2143         if (vwrq->flags & IW_RETRY_LONG) {
2144                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2145                 vwrq->value = priv->long_retry;
2146         } else {
2147                 vwrq->flags = IW_RETRY_LIMIT;
2148                 vwrq->value = priv->short_retry;
2149                 if (priv->long_retry != priv->short_retry)
2150                         vwrq->flags |= IW_RETRY_SHORT;
2151         }
2152
2153         return 0;
2154 }
2155
2156 static int atmel_set_rts(struct net_device *dev,
2157                          struct iw_request_info *info,
2158                          struct iw_param *vwrq,
2159                          char *extra)
2160 {
2161         struct atmel_private *priv = netdev_priv(dev);
2162         int rthr = vwrq->value;
2163
2164         if (vwrq->disabled)
2165                 rthr = 2347;
2166         if ((rthr < 0) || (rthr > 2347)) {
2167                 return -EINVAL;
2168         }
2169         priv->rts_threshold = rthr;
2170
2171         return -EINPROGRESS;            /* Call commit handler */
2172 }
2173
2174 static int atmel_get_rts(struct net_device *dev,
2175                          struct iw_request_info *info,
2176                          struct iw_param *vwrq,
2177                          char *extra)
2178 {
2179         struct atmel_private *priv = netdev_priv(dev);
2180
2181         vwrq->value = priv->rts_threshold;
2182         vwrq->disabled = (vwrq->value >= 2347);
2183         vwrq->fixed = 1;
2184
2185         return 0;
2186 }
2187
2188 static int atmel_set_frag(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 fthr = vwrq->value;
2195
2196         if (vwrq->disabled)
2197                 fthr = 2346;
2198         if ((fthr < 256) || (fthr > 2346)) {
2199                 return -EINVAL;
2200         }
2201         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2202         priv->frag_threshold = fthr;
2203
2204         return -EINPROGRESS;            /* Call commit handler */
2205 }
2206
2207 static int atmel_get_frag(struct net_device *dev,
2208                           struct iw_request_info *info,
2209                           struct iw_param *vwrq,
2210                           char *extra)
2211 {
2212         struct atmel_private *priv = netdev_priv(dev);
2213
2214         vwrq->value = priv->frag_threshold;
2215         vwrq->disabled = (vwrq->value >= 2346);
2216         vwrq->fixed = 1;
2217
2218         return 0;
2219 }
2220
2221 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2222                                 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2223
2224 static int atmel_set_freq(struct net_device *dev,
2225                           struct iw_request_info *info,
2226                           struct iw_freq *fwrq,
2227                           char *extra)
2228 {
2229         struct atmel_private *priv = netdev_priv(dev);
2230         int rc = -EINPROGRESS;          /* Call commit handler */
2231
2232         /* If setting by frequency, convert to a channel */
2233         if ((fwrq->e == 1) &&
2234             (fwrq->m >= (int) 241200000) &&
2235             (fwrq->m <= (int) 248700000)) {
2236                 int f = fwrq->m / 100000;
2237                 int c = 0;
2238                 while ((c < 14) && (f != frequency_list[c]))
2239                         c++;
2240                 /* Hack to fall through... */
2241                 fwrq->e = 0;
2242                 fwrq->m = c + 1;
2243         }
2244         /* Setting by channel number */
2245         if ((fwrq->m > 1000) || (fwrq->e > 0))
2246                 rc = -EOPNOTSUPP;
2247         else {
2248                 int channel = fwrq->m;
2249                 if (atmel_validate_channel(priv, channel) == 0) {
2250                         priv->channel = channel;
2251                 } else {
2252                         rc = -EINVAL;
2253                 }
2254         }
2255         return rc;
2256 }
2257
2258 static int atmel_get_freq(struct net_device *dev,
2259                           struct iw_request_info *info,
2260                           struct iw_freq *fwrq,
2261                           char *extra)
2262 {
2263         struct atmel_private *priv = netdev_priv(dev);
2264
2265         fwrq->m = priv->channel;
2266         fwrq->e = 0;
2267         return 0;
2268 }
2269
2270 static int atmel_set_scan(struct net_device *dev,
2271                           struct iw_request_info *info,
2272                           struct iw_param *vwrq,
2273                           char *extra)
2274 {
2275         struct atmel_private *priv = netdev_priv(dev);
2276         unsigned long flags;
2277
2278         /* Note : you may have realised that, as this is a SET operation,
2279          * this is privileged and therefore a normal user can't
2280          * perform scanning.
2281          * This is not an error, while the device perform scanning,
2282          * traffic doesn't flow, so it's a perfect DoS...
2283          * Jean II */
2284
2285         if (priv->station_state == STATION_STATE_DOWN)
2286                 return -EAGAIN;
2287
2288         /* Timeout old surveys. */
2289         if ((jiffies - priv->last_survey) > (20 * HZ))
2290                 priv->site_survey_state = SITE_SURVEY_IDLE;
2291         priv->last_survey = jiffies;
2292
2293         /* Initiate a scan command */
2294         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2295                 return -EBUSY;
2296
2297         del_timer_sync(&priv->management_timer);
2298         spin_lock_irqsave(&priv->irqlock, flags);
2299
2300         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2301         priv->fast_scan = 0;
2302         atmel_scan(priv, 0);
2303         spin_unlock_irqrestore(&priv->irqlock, flags);
2304
2305         return 0;
2306 }
2307
2308 static int atmel_get_scan(struct net_device *dev,
2309                           struct iw_request_info *info,
2310                           struct iw_point *dwrq,
2311                           char *extra)
2312 {
2313         struct atmel_private *priv = netdev_priv(dev);
2314         int i;
2315         char *current_ev = extra;
2316         struct iw_event iwe;
2317
2318         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2319                 return -EAGAIN;
2320
2321         for (i = 0; i < priv->BSS_list_entries; i++) {
2322                 iwe.cmd = SIOCGIWAP;
2323                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2324                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2325                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2326
2327                 iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
2328                 if (iwe.u.data.length > 32)
2329                         iwe.u.data.length = 32;
2330                 iwe.cmd = SIOCGIWESSID;
2331                 iwe.u.data.flags = 1;
2332                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2333
2334                 iwe.cmd = SIOCGIWMODE;
2335                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2336                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2337
2338                 iwe.cmd = SIOCGIWFREQ;
2339                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2340                 iwe.u.freq.e = 0;
2341                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2342
2343                 /* Add quality statistics */
2344                 iwe.cmd = IWEVQUAL;
2345                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2346                 iwe.u.qual.qual  = iwe.u.qual.level;
2347                 /* iwe.u.qual.noise  = SOMETHING */
2348                 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA , &iwe, IW_EV_QUAL_LEN);
2349
2350
2351                 iwe.cmd = SIOCGIWENCODE;
2352                 if (priv->BSSinfo[i].UsingWEP)
2353                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2354                 else
2355                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2356                 iwe.u.data.length = 0;
2357                 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2358         }
2359
2360         /* Length of data */
2361         dwrq->length = (current_ev - extra);
2362         dwrq->flags = 0;
2363
2364         return 0;
2365 }
2366
2367 static int atmel_get_range(struct net_device *dev,
2368                            struct iw_request_info *info,
2369                            struct iw_point *dwrq,
2370                            char *extra)
2371 {
2372         struct atmel_private *priv = netdev_priv(dev);
2373         struct iw_range *range = (struct iw_range *) extra;
2374         int k, i, j;
2375
2376         dwrq->length = sizeof(struct iw_range);
2377         memset(range, 0, sizeof(struct iw_range));
2378         range->min_nwid = 0x0000;
2379         range->max_nwid = 0x0000;
2380         range->num_channels = 0;
2381         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2382                 if (priv->reg_domain == channel_table[j].reg_domain) {
2383                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2384                         break;
2385                 }
2386         if (range->num_channels != 0) {
2387                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2388                         range->freq[k].i = i; /* List index */
2389                         range->freq[k].m = frequency_list[i - 1] * 100000;
2390                         range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2391                 }
2392                 range->num_frequency = k;
2393         }
2394
2395         range->max_qual.qual = 100;
2396         range->max_qual.level = 100;
2397         range->max_qual.noise = 0;
2398         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2399
2400         range->avg_qual.qual = 50;
2401         range->avg_qual.level = 50;
2402         range->avg_qual.noise = 0;
2403         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2404
2405         range->sensitivity = 0;
2406
2407         range->bitrate[0] =  1000000;
2408         range->bitrate[1] =  2000000;
2409         range->bitrate[2] =  5500000;
2410         range->bitrate[3] = 11000000;
2411         range->num_bitrates = 4;
2412
2413         range->min_rts = 0;
2414         range->max_rts = 2347;
2415         range->min_frag = 256;
2416         range->max_frag = 2346;
2417
2418         range->encoding_size[0] = 5;
2419         range->encoding_size[1] = 13;
2420         range->num_encoding_sizes = 2;
2421         range->max_encoding_tokens = 4;
2422
2423         range->pmp_flags = IW_POWER_ON;
2424         range->pmt_flags = IW_POWER_ON;
2425         range->pm_capa = 0;
2426
2427         range->we_version_source = WIRELESS_EXT;
2428         range->we_version_compiled = WIRELESS_EXT;
2429         range->retry_capa = IW_RETRY_LIMIT ;
2430         range->retry_flags = IW_RETRY_LIMIT;
2431         range->r_time_flags = 0;
2432         range->min_retry = 1;
2433         range->max_retry = 65535;
2434
2435         return 0;
2436 }
2437
2438 static int atmel_set_wap(struct net_device *dev,
2439                          struct iw_request_info *info,
2440                          struct sockaddr *awrq,
2441                          char *extra)
2442 {
2443         struct atmel_private *priv = netdev_priv(dev);
2444         int i;
2445         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2446         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2447         unsigned long flags;
2448
2449         if (awrq->sa_family != ARPHRD_ETHER)
2450                 return -EINVAL;
2451
2452         if (!memcmp(any, awrq->sa_data, 6) ||
2453             !memcmp(off, awrq->sa_data, 6)) {
2454                 del_timer_sync(&priv->management_timer);
2455                 spin_lock_irqsave(&priv->irqlock, flags);
2456                 atmel_scan(priv, 1);
2457                 spin_unlock_irqrestore(&priv->irqlock, flags);
2458                 return 0;
2459         }
2460
2461         for (i = 0; i < priv->BSS_list_entries; i++) {
2462                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2463                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2464                                 return -EINVAL;
2465                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2466                                 return -EINVAL;
2467                         } else {
2468                                 del_timer_sync(&priv->management_timer);
2469                                 spin_lock_irqsave(&priv->irqlock, flags);
2470                                 atmel_join_bss(priv, i);
2471                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2472                                 return 0;
2473                         }
2474                 }
2475         }
2476
2477         return -EINVAL;
2478 }
2479
2480 static int atmel_config_commit(struct net_device *dev,
2481                                struct iw_request_info *info,    /* NULL */
2482                                void *zwrq,                      /* NULL */
2483                                char *extra)                     /* NULL */
2484 {
2485         return atmel_open(dev);
2486 }
2487
2488 static const iw_handler atmel_handler[] =
2489 {
2490         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2491         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2492         (iw_handler) NULL,                      /* SIOCSIWNWID */
2493         (iw_handler) NULL,                      /* SIOCGIWNWID */
2494         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2495         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2496         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2497         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2498         (iw_handler) NULL,                      /* SIOCSIWSENS */
2499         (iw_handler) NULL,                      /* SIOCGIWSENS */
2500         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2501         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2502         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2503         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2504         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2505         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2506         (iw_handler) NULL,                      /* SIOCSIWSPY */
2507         (iw_handler) NULL,                      /* SIOCGIWSPY */
2508         (iw_handler) NULL,                      /* -- hole -- */
2509         (iw_handler) NULL,                      /* -- hole -- */
2510         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2511         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2512         (iw_handler) NULL,                      /* -- hole -- */
2513         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2514         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2515         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2516         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2517         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2518         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2519         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2520         (iw_handler) NULL,                      /* -- hole -- */
2521         (iw_handler) NULL,                      /* -- hole -- */
2522         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2523         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2524         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2525         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2526         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2527         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2528         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2529         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2530         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2531         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2532         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2533         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2534         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2535         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2536         (iw_handler) NULL,                      /* -- hole -- */
2537         (iw_handler) NULL,                      /* -- hole -- */
2538         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2539         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2540         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2541         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2542         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2543         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2544         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2545 };
2546
2547 static const iw_handler atmel_private_handler[] =
2548 {
2549         NULL,                           /* SIOCIWFIRSTPRIV */
2550 };
2551
2552 typedef struct atmel_priv_ioctl {
2553         char id[32];
2554         unsigned char __user *data;
2555         unsigned short len;
2556 } atmel_priv_ioctl;
2557
2558 #define ATMELFWL        SIOCIWFIRSTPRIV
2559 #define ATMELIDIFC      ATMELFWL + 1
2560 #define ATMELRD         ATMELFWL + 2
2561 #define ATMELMAGIC 0x51807
2562 #define REGDOMAINSZ 20
2563
2564 static const struct iw_priv_args atmel_private_args[] = {
2565         {
2566                 .cmd = ATMELFWL,
2567                 .set_args = IW_PRIV_TYPE_BYTE
2568                                 | IW_PRIV_SIZE_FIXED
2569                                 | sizeof (atmel_priv_ioctl),
2570                 .get_args = IW_PRIV_TYPE_NONE,
2571                 .name = "atmelfwl"
2572         }, {
2573                 .cmd = ATMELIDIFC,
2574                 .set_args = IW_PRIV_TYPE_NONE,
2575                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2576                 .name = "atmelidifc"
2577         }, {
2578                 .cmd = ATMELRD,
2579                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2580                 .get_args = IW_PRIV_TYPE_NONE,
2581                 .name = "regdomain"
2582         },
2583 };
2584
2585 static const struct iw_handler_def atmel_handler_def =
2586 {
2587         .num_standard   = ARRAY_SIZE(atmel_handler),
2588         .num_private    = ARRAY_SIZE(atmel_private_handler),
2589         .num_private_args = ARRAY_SIZE(atmel_private_args),
2590         .standard       = (iw_handler *) atmel_handler,
2591         .private        = (iw_handler *) atmel_private_handler,
2592         .private_args   = (struct iw_priv_args *) atmel_private_args,
2593         .get_wireless_stats = atmel_get_wireless_stats
2594 };
2595
2596 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2597 {
2598         int i, rc = 0;
2599         struct atmel_private *priv = netdev_priv(dev);
2600         atmel_priv_ioctl com;
2601         struct iwreq *wrq = (struct iwreq *) rq;
2602         unsigned char *new_firmware;
2603         char domain[REGDOMAINSZ + 1];
2604
2605         switch (cmd) {
2606         case ATMELIDIFC:
2607                 wrq->u.param.value = ATMELMAGIC;
2608                 break;
2609
2610         case ATMELFWL:
2611                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2612                         rc = -EFAULT;
2613                         break;
2614                 }
2615
2616                 if (!capable(CAP_NET_ADMIN)) {
2617                         rc = -EPERM;
2618                         break;
2619                 }
2620
2621                 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2622                         rc = -ENOMEM;
2623                         break;
2624                 }
2625
2626                 if (copy_from_user(new_firmware, com.data, com.len)) {
2627                         kfree(new_firmware);
2628                         rc = -EFAULT;
2629                         break;
2630                 }
2631
2632                 kfree(priv->firmware);
2633
2634                 priv->firmware = new_firmware;
2635                 priv->firmware_length = com.len;
2636                 strncpy(priv->firmware_id, com.id, 31);
2637                 priv->firmware_id[31] = '\0';
2638                 break;
2639
2640         case ATMELRD:
2641                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2642                         rc = -EFAULT;
2643                         break;
2644                 }
2645
2646                 if (!capable(CAP_NET_ADMIN)) {
2647                         rc = -EPERM;
2648                         break;
2649                 }
2650
2651                 domain[REGDOMAINSZ] = 0;
2652                 rc = -EINVAL;
2653                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2654                         /* strcasecmp doesn't exist in the library */
2655                         char *a = channel_table[i].name;
2656                         char *b = domain;
2657                         while (*a) {
2658                                 char c1 = *a++;
2659                                 char c2 = *b++;
2660                                 if (tolower(c1) != tolower(c2))
2661                                         break;
2662                         }
2663                         if (!*a && !*b) {
2664                                 priv->config_reg_domain = channel_table[i].reg_domain;
2665                                 rc = 0;
2666                         }
2667                 }
2668
2669                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2670                         rc = atmel_open(dev);
2671                 break;
2672
2673         default:
2674                 rc = -EOPNOTSUPP;
2675         }
2676
2677         return rc;
2678 }
2679
2680 struct auth_body {
2681         u16 alg;
2682         u16 trans_seq;
2683         u16 status;
2684         u8 el_id;
2685         u8 chall_text_len;
2686         u8 chall_text[253];
2687 };
2688
2689 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2690 {
2691         int old_state = priv->station_state;
2692
2693         if (new_state == old_state)
2694                 return;
2695
2696         priv->station_state = new_state;
2697
2698         if (new_state == STATION_STATE_READY) {
2699                 netif_start_queue(priv->dev);
2700                 netif_carrier_on(priv->dev);
2701         }
2702
2703         if (old_state == STATION_STATE_READY) {
2704                 netif_carrier_off(priv->dev);
2705                 if (netif_running(priv->dev))
2706                         netif_stop_queue(priv->dev);
2707                 priv->last_beacon_timestamp = 0;
2708         }
2709 }
2710
2711 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2712 {
2713         struct {
2714                 u8 BSSID[6];
2715                 u8 SSID[MAX_SSID_LENGTH];
2716                 u8 scan_type;
2717                 u8 channel;
2718                 u16 BSS_type;
2719                 u16 min_channel_time;
2720                 u16 max_channel_time;
2721                 u8 options;
2722                 u8 SSID_size;
2723         } cmd;
2724
2725         memset(cmd.BSSID, 0xff, 6);
2726
2727         if (priv->fast_scan) {
2728                 cmd.SSID_size = priv->SSID_size;
2729                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2730                 cmd.min_channel_time = cpu_to_le16(10);
2731                 cmd.max_channel_time = cpu_to_le16(50);
2732         } else {
2733                 priv->BSS_list_entries = 0;
2734                 cmd.SSID_size = 0;
2735                 cmd.min_channel_time = cpu_to_le16(10);
2736                 cmd.max_channel_time = cpu_to_le16(120);
2737         }
2738
2739         cmd.options = 0;
2740
2741         if (!specific_ssid)
2742                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2743
2744         cmd.channel = (priv->channel & 0x7f);
2745         cmd.scan_type = SCAN_TYPE_ACTIVE;
2746         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2747                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2748
2749         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2750
2751         /* This must come after all hardware access to avoid being messed up
2752            by stuff happening in interrupt context after we leave STATE_DOWN */
2753         atmel_enter_state(priv, STATION_STATE_SCANNING);
2754 }
2755
2756 static void join(struct atmel_private *priv, int type)
2757 {
2758         struct {
2759                 u8 BSSID[6];
2760                 u8 SSID[MAX_SSID_LENGTH];
2761                 u8 BSS_type; /* this is a short in a scan command - weird */
2762                 u8 channel;
2763                 u16 timeout;
2764                 u8 SSID_size;
2765                 u8 reserved;
2766         } cmd;
2767
2768         cmd.SSID_size = priv->SSID_size;
2769         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2770         memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2771         cmd.channel = (priv->channel & 0x7f);
2772         cmd.BSS_type = type;
2773         cmd.timeout = cpu_to_le16(2000);
2774
2775         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2776 }
2777
2778 static void start(struct atmel_private *priv, int type)
2779 {
2780         struct {
2781                 u8 BSSID[6];
2782                 u8 SSID[MAX_SSID_LENGTH];
2783                 u8 BSS_type;
2784                 u8 channel;
2785                 u8 SSID_size;
2786                 u8 reserved[3];
2787         } cmd;
2788
2789         cmd.SSID_size = priv->SSID_size;
2790         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2791         memcpy(cmd.BSSID, priv->BSSID, 6);
2792         cmd.BSS_type = type;
2793         cmd.channel = (priv->channel & 0x7f);
2794
2795         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2796 }
2797
2798 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2799                                 u8 channel)
2800 {
2801         int rejoin = 0;
2802         int new = capability & MFIE_TYPE_POWER_CONSTRAINT ?
2803                 SHORT_PREAMBLE : LONG_PREAMBLE;
2804
2805         if (priv->preamble != new) {
2806                 priv->preamble = new;
2807                 rejoin = 1;
2808                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2809         }
2810
2811         if (priv->channel != channel) {
2812                 priv->channel = channel;
2813                 rejoin = 1;
2814                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2815         }
2816
2817         if (rejoin) {
2818                 priv->station_is_associated = 0;
2819                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2820
2821                 if (priv->operating_mode == IW_MODE_INFRA)
2822                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2823                 else
2824                         join(priv, BSS_TYPE_AD_HOC);
2825         }
2826 }
2827
2828 static void send_authentication_request(struct atmel_private *priv, u16 system,
2829                                         u8 *challenge, int challenge_len)
2830 {
2831         struct ieee80211_hdr_4addr header;
2832         struct auth_body auth;
2833
2834         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2835         header.duration_id = cpu_to_le16(0x8000);
2836         header.seq_ctl = 0;
2837         memcpy(header.addr1, priv->CurrentBSSID, 6);
2838         memcpy(header.addr2, priv->dev->dev_addr, 6);
2839         memcpy(header.addr3, priv->CurrentBSSID, 6);
2840
2841         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2842                 /* no WEP for authentication frames with TrSeqNo 1 */
2843                 header.frame_ctl |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2844
2845         auth.alg = cpu_to_le16(system);
2846
2847         auth.status = 0;
2848         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2849         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2850         priv->CurrentAuthentTransactionSeqNum += 2;
2851
2852         if (challenge_len != 0) {
2853                 auth.el_id = 16; /* challenge_text */
2854                 auth.chall_text_len = challenge_len;
2855                 memcpy(auth.chall_text, challenge, challenge_len);
2856                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2857         } else {
2858                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2859         }
2860 }
2861
2862 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2863 {
2864         u8 *ssid_el_p;
2865         int bodysize;
2866         struct ieee80211_hdr_4addr header;
2867         struct ass_req_format {
2868                 u16 capability;
2869                 u16 listen_interval;
2870                 u8 ap[6]; /* nothing after here directly accessible */
2871                 u8 ssid_el_id;
2872                 u8 ssid_len;
2873                 u8 ssid[MAX_SSID_LENGTH];
2874                 u8 sup_rates_el_id;
2875                 u8 sup_rates_len;
2876                 u8 rates[4];
2877         } body;
2878
2879         header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2880                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2881         header.duration_id = cpu_to_le16(0x8000);
2882         header.seq_ctl = 0;
2883
2884         memcpy(header.addr1, priv->CurrentBSSID, 6);
2885         memcpy(header.addr2, priv->dev->dev_addr, 6);
2886         memcpy(header.addr3, priv->CurrentBSSID, 6);
2887
2888         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2889         if (priv->wep_is_on)
2890                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2891         if (priv->preamble == SHORT_PREAMBLE)
2892                 body.capability |= cpu_to_le16(MFIE_TYPE_POWER_CONSTRAINT);
2893
2894         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2895
2896         /* current AP address - only in reassoc frame */
2897         if (is_reassoc) {
2898                 memcpy(body.ap, priv->CurrentBSSID, 6);
2899                 ssid_el_p = (u8 *)&body.ssid_el_id;
2900                 bodysize = 18 + priv->SSID_size;
2901         } else {
2902                 ssid_el_p = (u8 *)&body.ap[0];
2903                 bodysize = 12 + priv->SSID_size;
2904         }
2905
2906         ssid_el_p[0] = MFIE_TYPE_SSID;
2907         ssid_el_p[1] = priv->SSID_size;
2908         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2909         ssid_el_p[2 + priv->SSID_size] = MFIE_TYPE_RATES;
2910         ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2911         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2912
2913         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2914 }
2915
2916 static int is_frame_from_current_bss(struct atmel_private *priv,
2917                                      struct ieee80211_hdr_4addr *header)
2918 {
2919         if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
2920                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2921         else
2922                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2923 }
2924
2925 static int retrieve_bss(struct atmel_private *priv)
2926 {
2927         int i;
2928         int max_rssi = -128;
2929         int max_index = -1;
2930
2931         if (priv->BSS_list_entries == 0)
2932                 return -1;
2933
2934         if (priv->connect_to_any_BSS) {
2935                 /* Select a BSS with the max-RSSI but of the same type and of
2936                    the same WEP mode and that it is not marked as 'bad' (i.e.
2937                    we had previously failed to connect to this BSS with the
2938                    settings that we currently use) */
2939                 priv->current_BSS = 0;
2940                 for (i = 0; i < priv->BSS_list_entries; i++) {
2941                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2942                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2943                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2944                             !(priv->BSSinfo[i].channel & 0x80)) {
2945                                 max_rssi = priv->BSSinfo[i].RSSI;
2946                                 priv->current_BSS = max_index = i;
2947                         }
2948                 }
2949                 return max_index;
2950         }
2951
2952         for (i = 0; i < priv->BSS_list_entries; i++) {
2953                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2954                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2955                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2956                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2957                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2958                                 max_rssi = priv->BSSinfo[i].RSSI;
2959                                 max_index = i;
2960                         }
2961                 }
2962         }
2963         return max_index;
2964 }
2965
2966 static void store_bss_info(struct atmel_private *priv,
2967                            struct ieee80211_hdr_4addr *header, u16 capability,
2968                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2969                            u8 *ssid, int is_beacon)
2970 {
2971         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2972         int i, index;
2973
2974         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2975                 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2976                         index = i;
2977
2978         /* If we process a probe and an entry from this BSS exists
2979            we will update the BSS entry with the info from this BSS.
2980            If we process a beacon we will only update RSSI */
2981
2982         if (index == -1) {
2983                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2984                         return;
2985                 index = priv->BSS_list_entries++;
2986                 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2987                 priv->BSSinfo[index].RSSI = rssi;
2988         } else {
2989                 if (rssi > priv->BSSinfo[index].RSSI)
2990                         priv->BSSinfo[index].RSSI = rssi;
2991                 if (is_beacon)
2992                         return;
2993         }
2994
2995         priv->BSSinfo[index].channel = channel;
2996         priv->BSSinfo[index].beacon_period = beacon_period;
2997         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2998         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2999         priv->BSSinfo[index].SSIDsize = ssid_len;
3000
3001         if (capability & WLAN_CAPABILITY_IBSS)
3002                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3003         else if (capability & WLAN_CAPABILITY_ESS)
3004                 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
3005
3006         priv->BSSinfo[index].preamble = capability & MFIE_TYPE_POWER_CONSTRAINT ?
3007                 SHORT_PREAMBLE : LONG_PREAMBLE;
3008 }
3009
3010 static void authenticate(struct atmel_private *priv, u16 frame_len)
3011 {
3012         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3013         u16 status = le16_to_cpu(auth->status);
3014         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3015         u16 system = le16_to_cpu(auth->alg);
3016
3017         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3018                 /* no WEP */
3019                 if (priv->station_was_associated) {
3020                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3021                         send_association_request(priv, 1);
3022                         return;
3023                 } else {
3024                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3025                         send_association_request(priv, 0);
3026                         return;
3027                 }
3028         }
3029
3030         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3031                 int should_associate = 0;
3032                 /* WEP */
3033                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3034                         return;
3035
3036                 if (system == WLAN_AUTH_OPEN) {
3037                         if (trans_seq_no == 0x0002) {
3038                                 should_associate = 1;
3039                         }
3040                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3041                         if (trans_seq_no == 0x0002 &&
3042                             auth->el_id == MFIE_TYPE_CHALLENGE) {
3043                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3044                                 return;
3045                         } else if (trans_seq_no == 0x0004) {
3046                                 should_associate = 1;
3047                         }
3048                 }
3049
3050                 if (should_associate) {
3051                         if(priv->station_was_associated) {
3052                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3053                                 send_association_request(priv, 1);
3054                                 return;
3055                         } else {
3056                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3057                                 send_association_request(priv, 0);
3058                                 return;
3059                         }
3060                 }
3061         }
3062
3063         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3064                 /* Do opensystem first, then try sharedkey */
3065                 if (system == WLAN_AUTH_OPEN) {
3066                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3067                         priv->exclude_unencrypted = 1;
3068                         send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3069                         return;
3070                 } else if (priv->connect_to_any_BSS) {
3071                         int bss_index;
3072
3073                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3074
3075                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3076                                 atmel_join_bss(priv, bss_index);
3077                                 return;
3078                         }
3079                 }
3080         }
3081
3082         priv->AuthenticationRequestRetryCnt = 0;
3083         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3084         priv->station_is_associated = 0;
3085 }
3086
3087 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3088 {
3089         struct ass_resp_format {
3090                 u16 capability;
3091                 u16 status;
3092                 u16 ass_id;
3093                 u8 el_id;
3094                 u8 length;
3095                 u8 rates[4];
3096         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3097
3098         u16 status = le16_to_cpu(ass_resp->status);
3099         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3100         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3101
3102         union iwreq_data wrqu;
3103
3104         if (frame_len < 8 + rates_len)
3105                 return;
3106
3107         if (status == WLAN_STATUS_SUCCESS) {
3108                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3109                         priv->AssociationRequestRetryCnt = 0;
3110                 else
3111                         priv->ReAssociationRequestRetryCnt = 0;
3112
3113                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3114                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3115                 atmel_set_mib(priv, Phy_Mib_Type,
3116                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3117                 if (priv->power_mode == 0) {
3118                         priv->listen_interval = 1;
3119                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3120                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3121                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3122                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3123                 } else {
3124                         priv->listen_interval = 2;
3125                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3126                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3127                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3128                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3129                 }
3130
3131                 priv->station_is_associated = 1;
3132                 priv->station_was_associated = 1;
3133                 atmel_enter_state(priv, STATION_STATE_READY);
3134
3135                 /* Send association event to userspace */
3136                 wrqu.data.length = 0;
3137                 wrqu.data.flags = 0;
3138                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3139                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3140                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3141
3142                 return;
3143         }
3144
3145         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3146             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3147             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3148             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3149                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3150                 priv->AssociationRequestRetryCnt++;
3151                 send_association_request(priv, 0);
3152                 return;
3153         }
3154
3155         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3156             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3157             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3158             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3159                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3160                 priv->ReAssociationRequestRetryCnt++;
3161                 send_association_request(priv, 1);
3162                 return;
3163         }
3164
3165         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3166         priv->station_is_associated = 0;
3167
3168         if (priv->connect_to_any_BSS) {
3169                 int bss_index;
3170                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3171
3172                 if ((bss_index = retrieve_bss(priv)) != -1)
3173                         atmel_join_bss(priv, bss_index);
3174         }
3175 }
3176
3177 void atmel_join_bss(struct atmel_private *priv, int bss_index)
3178 {
3179         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3180
3181         memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3182         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3183
3184         /* The WPA stuff cares about the current AP address */
3185         if (priv->use_wpa)
3186                 build_wpa_mib(priv);
3187
3188         /* When switching to AdHoc turn OFF Power Save if needed */
3189
3190         if (bss->BSStype == IW_MODE_ADHOC &&
3191             priv->operating_mode != IW_MODE_ADHOC &&
3192             priv->power_mode) {
3193                 priv->power_mode = 0;
3194                 priv->listen_interval = 1;
3195                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3196                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3197                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3198                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3199         }
3200
3201         priv->operating_mode = bss->BSStype;
3202         priv->channel = bss->channel & 0x7f;
3203         priv->beacon_period = bss->beacon_period;
3204
3205         if (priv->preamble != bss->preamble) {
3206                 priv->preamble = bss->preamble;
3207                 atmel_set_mib8(priv, Local_Mib_Type,
3208                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3209         }
3210
3211         if (!priv->wep_is_on && bss->UsingWEP) {
3212                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3213                 priv->station_is_associated = 0;
3214                 return;
3215         }
3216
3217         if (priv->wep_is_on && !bss->UsingWEP) {
3218                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3219                 priv->station_is_associated = 0;
3220                 return;
3221         }
3222
3223         atmel_enter_state(priv, STATION_STATE_JOINNING);
3224
3225         if (priv->operating_mode == IW_MODE_INFRA)
3226                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3227         else
3228                 join(priv, BSS_TYPE_AD_HOC);
3229 }
3230
3231 static void restart_search(struct atmel_private *priv)
3232 {
3233         int bss_index;
3234
3235         if (!priv->connect_to_any_BSS) {
3236                 atmel_scan(priv, 1);
3237         } else {
3238                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3239
3240                 if ((bss_index = retrieve_bss(priv)) != -1)
3241                         atmel_join_bss(priv, bss_index);
3242                 else
3243                         atmel_scan(priv, 0);
3244         }
3245 }
3246
3247 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3248 {
3249         u8 old = priv->wstats.qual.level;
3250         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3251
3252         switch (priv->firmware_type) {
3253                 case ATMEL_FW_TYPE_502E:
3254                         max_rssi = 63; /* 502-rmfd-reve max by experiment */
3255                         break;
3256                 default:
3257                         break;
3258         }
3259
3260         rssi = rssi * 100 / max_rssi;
3261         if ((rssi + old) % 2)
3262                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3263         else
3264                 priv->wstats.qual.level = (rssi + old) / 2;
3265         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3266         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3267 }
3268
3269 static void atmel_smooth_qual(struct atmel_private *priv)
3270 {
3271         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3272         while (time_diff--) {
3273                 priv->last_qual += HZ;
3274                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3275                 priv->wstats.qual.qual +=
3276                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3277                 priv->beacons_this_sec = 0;
3278         }
3279         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3280         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3281 }
3282
3283 /* deals with incoming managment frames. */
3284 static void atmel_management_frame(struct atmel_private *priv,
3285                                    struct ieee80211_hdr_4addr *header,
3286                                    u16 frame_len, u8 rssi)
3287 {
3288         u16 subtype;
3289
3290         subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE;
3291         switch (subtype) {
3292         case IEEE80211_STYPE_BEACON:
3293         case IEEE80211_STYPE_PROBE_RESP:
3294
3295                 /* beacon frame has multiple variable-length fields -
3296                    never let an engineer loose with a data structure design. */
3297                 {
3298                         struct beacon_format {
3299                                 u64 timestamp;
3300                                 u16 interval;
3301                                 u16 capability;
3302                                 u8 ssid_el_id;
3303                                 u8 ssid_length;
3304                                 /* ssid here */
3305                                 u8 rates_el_id;
3306                                 u8 rates_length;
3307                                 /* rates here */
3308                                 u8 ds_el_id;
3309                                 u8 ds_length;
3310                                 /* ds here */
3311                         } *beacon = (struct beacon_format *)priv->rx_buf;
3312
3313                         u8 channel, rates_length, ssid_length;
3314                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3315                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3316                         u16 capability = le16_to_cpu(beacon->capability);
3317                         u8 *beaconp = priv->rx_buf;
3318                         ssid_length = beacon->ssid_length;
3319                         /* this blows chunks. */
3320                         if (frame_len < 14 || frame_len < ssid_length + 15)
3321                                 return;
3322                         rates_length = beaconp[beacon->ssid_length + 15];
3323                         if (frame_len < ssid_length + rates_length + 18)
3324                                 return;
3325                         if (ssid_length >  MAX_SSID_LENGTH)
3326                                 return;
3327                         channel = beaconp[ssid_length + rates_length + 18];
3328
3329                         if (priv->station_state == STATION_STATE_READY) {
3330                                 smooth_rssi(priv, rssi);
3331                                 if (is_frame_from_current_bss(priv, header)) {
3332                                         priv->beacons_this_sec++;
3333                                         atmel_smooth_qual(priv);
3334                                         if (priv->last_beacon_timestamp) {
3335                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3336                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3337                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3338                                                 if (beacons > 1)
3339                                                         priv->wstats.miss.beacon += beacons - 1;
3340                                         }
3341                                         priv->last_beacon_timestamp = timestamp;
3342                                         handle_beacon_probe(priv, capability, channel);
3343                                 }
3344                         }
3345
3346                         if (priv->station_state == STATION_STATE_SCANNING)
3347                                 store_bss_info(priv, header, capability,
3348                                                beacon_interval, channel, rssi,
3349                                                ssid_length,
3350                                                &beacon->rates_el_id,
3351                                                subtype == IEEE80211_STYPE_BEACON);
3352                 }
3353                 break;
3354
3355         case IEEE80211_STYPE_AUTH:
3356
3357                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3358                         authenticate(priv, frame_len);
3359
3360                 break;
3361
3362         case IEEE80211_STYPE_ASSOC_RESP:
3363         case IEEE80211_STYPE_REASSOC_RESP:
3364
3365                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3366                     priv->station_state == STATION_STATE_REASSOCIATING)
3367                         associate(priv, frame_len, subtype);
3368
3369                 break;
3370
3371         case IEEE80211_STYPE_DISASSOC:
3372                 if (priv->station_is_associated &&
3373                     priv->operating_mode == IW_MODE_INFRA &&
3374                     is_frame_from_current_bss(priv, header)) {
3375                         priv->station_was_associated = 0;
3376                         priv->station_is_associated = 0;
3377
3378                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3379                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3380                 }
3381
3382                 break;
3383
3384         case IEEE80211_STYPE_DEAUTH:
3385                 if (priv->operating_mode == IW_MODE_INFRA &&
3386                     is_frame_from_current_bss(priv, header)) {
3387                         priv->station_was_associated = 0;
3388
3389                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3390                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3391                 }
3392
3393                 break;
3394         }
3395 }
3396
3397 /* run when timer expires */
3398 static void atmel_management_timer(u_long a)
3399 {
3400         struct net_device *dev = (struct net_device *) a;
3401         struct atmel_private *priv = netdev_priv(dev);
3402         unsigned long flags;
3403
3404         /* Check if the card has been yanked. */
3405         if (priv->card && priv->present_callback &&
3406                 !(*priv->present_callback)(priv->card))
3407                 return;
3408
3409         spin_lock_irqsave(&priv->irqlock, flags);
3410
3411         switch (priv->station_state) {
3412
3413         case STATION_STATE_AUTHENTICATING:
3414                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3415                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3416                         priv->station_is_associated = 0;
3417                         priv->AuthenticationRequestRetryCnt = 0;
3418                         restart_search(priv);
3419                 } else {
3420                         int auth = WLAN_AUTH_OPEN;
3421                         priv->AuthenticationRequestRetryCnt++;
3422                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3423                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3424                         if (priv->wep_is_on && priv->exclude_unencrypted)
3425                                 auth = WLAN_AUTH_SHARED_KEY;
3426                         send_authentication_request(priv, auth, NULL, 0);
3427           }
3428           break;
3429
3430         case STATION_STATE_ASSOCIATING:
3431                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3432                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3433                         priv->station_is_associated = 0;
3434                         priv->AssociationRequestRetryCnt = 0;
3435                         restart_search(priv);
3436                 } else {
3437                         priv->AssociationRequestRetryCnt++;
3438                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3439                         send_association_request(priv, 0);
3440                 }
3441           break;
3442
3443         case STATION_STATE_REASSOCIATING:
3444                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3445                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3446                         priv->station_is_associated = 0;
3447                         priv->ReAssociationRequestRetryCnt = 0;
3448                         restart_search(priv);
3449                 } else {
3450                         priv->ReAssociationRequestRetryCnt++;
3451                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3452                         send_association_request(priv, 1);
3453                 }
3454                 break;
3455
3456         default:
3457                 break;
3458         }
3459
3460         spin_unlock_irqrestore(&priv->irqlock, flags);
3461 }
3462
3463 static void atmel_command_irq(struct atmel_private *priv)
3464 {
3465         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3466         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3467         int fast_scan;
3468         union iwreq_data wrqu;
3469
3470         if (status == CMD_STATUS_IDLE ||
3471             status == CMD_STATUS_IN_PROGRESS)
3472                 return;
3473
3474         switch (command){
3475
3476         case CMD_Start:
3477                 if (status == CMD_STATUS_COMPLETE) {
3478                         priv->station_was_associated = priv->station_is_associated;
3479                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3480                                       (u8 *)priv->CurrentBSSID, 6);
3481                         atmel_enter_state(priv, STATION_STATE_READY);
3482                 }
3483                 break;
3484
3485         case CMD_Scan:
3486                 fast_scan = priv->fast_scan;
3487                 priv->fast_scan = 0;
3488
3489                 if (status != CMD_STATUS_COMPLETE) {
3490                         atmel_scan(priv, 1);
3491                 } else {
3492                         int bss_index = retrieve_bss(priv);
3493                         int notify_scan_complete = 1;
3494                         if (bss_index != -1) {
3495                                 atmel_join_bss(priv, bss_index);
3496                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3497                                    priv->SSID_size != 0) {
3498                                 start(priv, BSS_TYPE_AD_HOC);
3499                         } else {
3500                                 priv->fast_scan = !fast_scan;
3501                                 atmel_scan(priv, 1);
3502                                 notify_scan_complete = 0;
3503                         }
3504                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3505                         if (notify_scan_complete) {
3506                                 wrqu.data.length = 0;
3507                                 wrqu.data.flags = 0;
3508                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3509                         }
3510                 }
3511                 break;
3512
3513         case CMD_SiteSurvey:
3514                 priv->fast_scan = 0;
3515
3516                 if (status != CMD_STATUS_COMPLETE)
3517                         return;
3518
3519                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3520                 if (priv->station_is_associated) {
3521                         atmel_enter_state(priv, STATION_STATE_READY);
3522                         wrqu.data.length = 0;
3523                         wrqu.data.flags = 0;
3524                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3525                 } else {
3526                         atmel_scan(priv, 1);
3527                 }
3528                 break;
3529
3530         case CMD_Join:
3531                 if (status == CMD_STATUS_COMPLETE) {
3532                         if (priv->operating_mode == IW_MODE_ADHOC) {
3533                                 priv->station_was_associated = priv->station_is_associated;
3534                                 atmel_enter_state(priv, STATION_STATE_READY);
3535                         } else {
3536                                 int auth = WLAN_AUTH_OPEN;
3537                                 priv->AuthenticationRequestRetryCnt = 0;
3538                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3539
3540                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3541                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3542                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3543                                         auth = WLAN_AUTH_SHARED_KEY;
3544                                 send_authentication_request(priv, auth, NULL, 0);
3545                         }
3546                         return;
3547                 }
3548
3549                 atmel_scan(priv, 1);
3550         }
3551 }
3552
3553 static int atmel_wakeup_firmware(struct atmel_private *priv)
3554 {
3555         struct host_info_struct *iface = &priv->host_info;
3556         u16 mr1, mr3;
3557         int i;
3558
3559         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3560                 atmel_set_gcr(priv->dev, GCR_REMAP);
3561
3562         /* wake up on-board processor */
3563         atmel_clear_gcr(priv->dev, 0x0040);
3564         atmel_write16(priv->dev, BSR, BSS_SRAM);
3565
3566         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3567                 mdelay(100);
3568
3569         /* and wait for it */
3570         for (i = LOOP_RETRY_LIMIT; i; i--) {
3571                 mr1 = atmel_read16(priv->dev, MR1);
3572                 mr3 = atmel_read16(priv->dev, MR3);
3573
3574                 if (mr3 & MAC_BOOT_COMPLETE)
3575                         break;
3576                 if (mr1 & MAC_BOOT_COMPLETE &&
3577                     priv->bus_type == BUS_TYPE_PCCARD)
3578                         break;
3579         }
3580
3581         if (i == 0) {
3582                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3583                 return 0;
3584         }
3585
3586         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3587                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3588                 return 0;
3589         }
3590
3591         /* now check for completion of MAC initialization through
3592            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3593            MAC initialization, check completion status, set interrupt mask,
3594            enables interrupts and calls Tx and Rx initialization functions */
3595
3596         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3597
3598         for (i = LOOP_RETRY_LIMIT; i; i--) {
3599                 mr1 = atmel_read16(priv->dev, MR1);
3600                 mr3 = atmel_read16(priv->dev, MR3);
3601
3602                 if (mr3 & MAC_INIT_COMPLETE)
3603                         break;
3604                 if (mr1 & MAC_INIT_COMPLETE &&
3605                     priv->bus_type == BUS_TYPE_PCCARD)
3606                         break;
3607         }
3608
3609         if (i == 0) {
3610                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3611                                 priv->dev->name);
3612                 return 0;
3613         }
3614
3615         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3616         if ((mr3 & MAC_INIT_COMPLETE) &&
3617             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3618                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3619                 return 0;
3620         }
3621         if ((mr1 & MAC_INIT_COMPLETE) &&
3622             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3623                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3624                 return 0;
3625         }
3626
3627         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3628                            priv->host_info_base, sizeof(*iface));
3629
3630         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3631         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3632         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3633         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3634         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3635         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3636         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3637         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3638         iface->build_version = le16_to_cpu(iface->build_version);
3639         iface->command_pos = le16_to_cpu(iface->command_pos);
3640         iface->major_version = le16_to_cpu(iface->major_version);
3641         iface->minor_version = le16_to_cpu(iface->minor_version);
3642         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3643         iface->mac_status = le16_to_cpu(iface->mac_status);
3644
3645         return 1;
3646 }
3647
3648 /* determine type of memory and MAC address */
3649 static int probe_atmel_card(struct net_device *dev)
3650 {
3651         int rc = 0;
3652         struct atmel_private *priv = netdev_priv(dev);
3653
3654         /* reset pccard */
3655         if (priv->bus_type == BUS_TYPE_PCCARD)
3656                 atmel_write16(dev, GCR, 0x0060);
3657
3658         atmel_write16(dev, GCR, 0x0040);
3659         mdelay(500);
3660
3661         if (atmel_read16(dev, MR2) == 0) {
3662                 /* No stored firmware so load a small stub which just
3663                    tells us the MAC address */
3664                 int i;
3665                 priv->card_type = CARD_TYPE_EEPROM;
3666                 atmel_write16(dev, BSR, BSS_IRAM);
3667                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3668                 atmel_set_gcr(dev, GCR_REMAP);
3669                 atmel_clear_gcr(priv->dev, 0x0040);
3670                 atmel_write16(dev, BSR, BSS_SRAM);
3671                 for (i = LOOP_RETRY_LIMIT; i; i--)
3672                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3673                                 break;
3674                 if (i == 0) {
3675                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3676                 } else {
3677                         atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3678                         /* got address, now squash it again until the network
3679                            interface is opened */
3680                         if (priv->bus_type == BUS_TYPE_PCCARD)
3681                                 atmel_write16(dev, GCR, 0x0060);
3682                         atmel_write16(dev, GCR, 0x0040);
3683                         rc = 1;
3684                 }
3685         } else if (atmel_read16(dev, MR4) == 0) {
3686                 /* Mac address easy in this case. */
3687                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3688                 atmel_write16(dev,  BSR, 1);
3689                 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3690                 atmel_write16(dev,  BSR, 0x200);
3691                 rc = 1;
3692         } else {
3693                 /* Standard firmware in flash, boot it up and ask
3694                    for the Mac Address */
3695                 priv->card_type = CARD_TYPE_SPI_FLASH;
3696                 if (atmel_wakeup_firmware(priv)) {
3697                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3698
3699                         /* got address, now squash it again until the network
3700                            interface is opened */
3701                         if (priv->bus_type == BUS_TYPE_PCCARD)
3702                                 atmel_write16(dev, GCR, 0x0060);
3703                         atmel_write16(dev, GCR, 0x0040);
3704                         rc = 1;
3705                 }
3706         }
3707
3708         if (rc) {
3709                 if (dev->dev_addr[0] == 0xFF) {
3710                         u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3711                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3712                         memcpy(dev->dev_addr, default_mac, 6);
3713                 }
3714         }
3715
3716         return rc;
3717 }
3718
3719 /* Move the encyption information on the MIB structure.
3720    This routine is for the pre-WPA firmware: later firmware has
3721    a different format MIB and a different routine. */
3722 static void build_wep_mib(struct atmel_private *priv)
3723 {
3724         struct { /* NB this is matched to the hardware, don't change. */
3725                 u8 wep_is_on;
3726                 u8 default_key; /* 0..3 */
3727                 u8 reserved;
3728                 u8 exclude_unencrypted;
3729
3730                 u32 WEPICV_error_count;
3731                 u32 WEP_excluded_count;
3732
3733                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3734                 u8 encryption_level; /* 0, 1, 2 */
3735                 u8 reserved2[3];
3736         } mib;
3737         int i;
3738
3739         mib.wep_is_on = priv->wep_is_on;
3740         if (priv->wep_is_on) {
3741                 if (priv->wep_key_len[priv->default_key] > 5)
3742                         mib.encryption_level = 2;
3743                 else
3744                         mib.encryption_level = 1;
3745         } else {
3746                 mib.encryption_level = 0;
3747         }
3748
3749         mib.default_key = priv->default_key;
3750         mib.exclude_unencrypted = priv->exclude_unencrypted;
3751
3752         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3753                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3754
3755         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3756 }
3757
3758 static void build_wpa_mib(struct atmel_private *priv)
3759 {
3760         /* This is for the later (WPA enabled) firmware. */
3761
3762         struct { /* NB this is matched to the hardware, don't change. */
3763                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3764                 u8 receiver_address[6];
3765                 u8 wep_is_on;
3766                 u8 default_key; /* 0..3 */
3767                 u8 group_key;
3768                 u8 exclude_unencrypted;
3769                 u8 encryption_type;
3770                 u8 reserved;
3771
3772                 u32 WEPICV_error_count;
3773                 u32 WEP_excluded_count;
3774
3775                 u8 key_RSC[4][8];
3776         } mib;
3777
3778         int i;
3779
3780         mib.wep_is_on = priv->wep_is_on;
3781         mib.exclude_unencrypted = priv->exclude_unencrypted;
3782         memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3783
3784         /* zero all the keys before adding in valid ones. */
3785         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3786
3787         if (priv->wep_is_on) {
3788                 /* There's a comment in the Atmel code to the effect that this
3789                    is only valid when still using WEP, it may need to be set to
3790                    something to use WPA */
3791                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3792
3793                 mib.default_key = mib.group_key = 255;
3794                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3795                         if (priv->wep_key_len[i] > 0) {
3796                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3797                                 if (i == priv->default_key) {
3798                                         mib.default_key = i;
3799                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3800                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3801                                 } else {
3802                                         mib.group_key = i;
3803                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3804                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3805                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3806                                 }
3807                         }
3808                 }
3809                 if (mib.default_key == 255)
3810                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3811                 if (mib.group_key == 255)
3812                         mib.group_key = mib.default_key;
3813
3814         }
3815
3816         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3817 }
3818
3819 static int reset_atmel_card(struct net_device *dev)
3820 {
3821         /* do everything necessary to wake up the hardware, including
3822            waiting for the lightning strike and throwing the knife switch....
3823
3824            set all the Mib values which matter in the card to match
3825            their settings in the atmel_private structure. Some of these
3826            can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3827            can only be changed by tearing down the world and coming back through
3828            here.
3829
3830            This routine is also responsible for initialising some
3831            hardware-specific fields in the atmel_private structure,
3832            including a copy of the firmware's hostinfo stucture
3833            which is the route into the rest of the firmare datastructures. */
3834
3835         struct atmel_private *priv = netdev_priv(dev);
3836         u8 configuration;
3837         int old_state = priv->station_state;
3838
3839         /* data to add to the firmware names, in priority order
3840            this implemenents firmware versioning */
3841
3842         static char *firmware_modifier[] = {
3843                 "-wpa",
3844                 "",
3845                 NULL
3846         };
3847
3848         /* reset pccard */
3849         if (priv->bus_type == BUS_TYPE_PCCARD)
3850                 atmel_write16(priv->dev, GCR, 0x0060);
3851
3852         /* stop card , disable interrupts */
3853         atmel_write16(priv->dev, GCR, 0x0040);
3854
3855         if (priv->card_type == CARD_TYPE_EEPROM) {
3856                 /* copy in firmware if needed */
3857                 const struct firmware *fw_entry = NULL;
3858                 unsigned char *fw;
3859                 int len = priv->firmware_length;
3860                 if (!(fw = priv->firmware)) {
3861                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3862                                 if (strlen(priv->firmware_id) == 0) {
3863                                         printk(KERN_INFO
3864                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3865                                                dev->name);
3866                                         printk(KERN_INFO
3867                                                "%s: if not, use the firmware= module parameter.\n",
3868                                                dev->name);
3869                                         strcpy(priv->firmware_id, "atmel_at76c502.bin");
3870                                 }
3871                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3872                                         printk(KERN_ALERT
3873                                                "%s: firmware %s is missing, cannot continue.\n",
3874                                                dev->name, priv->firmware_id);
3875                                         return 0;
3876                                 }
3877                         } else {
3878                                 int fw_index = 0;
3879                                 int success = 0;
3880
3881                                 /* get firmware filename entry based on firmware type ID */
3882                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3883                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3884                                         fw_index++;
3885
3886                                 /* construct the actual firmware file name */
3887                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3888                                         int i;
3889                                         for (i = 0; firmware_modifier[i]; i++) {
3890                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3891                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3892                                                 priv->firmware_id[31] = '\0';
3893                                                 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3894                                                         success = 1;
3895                                                         break;
3896                                                 }
3897                                         }
3898                                 }
3899                                 if (!success) {
3900                                         printk(KERN_ALERT
3901                                                "%s: firmware %s is missing, cannot start.\n",
3902                                                dev->name, priv->firmware_id);
3903                                         priv->firmware_id[0] = '\0';
3904                                         return 0;
3905                                 }
3906                         }
3907
3908                         fw = fw_entry->data;
3909                         len = fw_entry->size;
3910                 }
3911
3912                 if (len <= 0x6000) {
3913                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3914                         atmel_copy_to_card(priv->dev, 0, fw, len);
3915                         atmel_set_gcr(priv->dev, GCR_REMAP);
3916                 } else {
3917                         /* Remap */
3918                         atmel_set_gcr(priv->dev, GCR_REMAP);
3919                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3920                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3921                         atmel_write16(priv->dev, BSR, 0x2ff);
3922                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3923                 }
3924
3925                 if (fw_entry)
3926                         release_firmware(fw_entry);
3927         }
3928
3929         if (!atmel_wakeup_firmware(priv))
3930                 return 0;
3931
3932         /* Check the version and set the correct flag for wpa stuff,
3933            old and new firmware is incompatible.
3934            The pre-wpa 3com firmware reports major version 5,
3935            the wpa 3com firmware is major version 4 and doesn't need
3936            the 3com broken-ness filter. */
3937         priv->use_wpa = (priv->host_info.major_version == 4);
3938         priv->radio_on_broken = (priv->host_info.major_version == 5);
3939
3940         /* unmask all irq sources */
3941         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3942
3943         /* int Tx system and enable Tx */
3944         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3945         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3946         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3947         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3948
3949         priv->tx_desc_free = priv->host_info.tx_desc_count;
3950         priv->tx_desc_head = 0;
3951         priv->tx_desc_tail = 0;
3952         priv->tx_desc_previous = 0;
3953         priv->tx_free_mem = priv->host_info.tx_buff_size;
3954         priv->tx_buff_head = 0;
3955         priv->tx_buff_tail = 0;
3956
3957         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3958         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3959                                    configuration | FUNC_CTRL_TxENABLE);
3960
3961         /* init Rx system and enable */
3962         priv->rx_desc_head = 0;
3963
3964         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3965         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3966                                    configuration | FUNC_CTRL_RxENABLE);
3967
3968         if (!priv->radio_on_broken) {
3969                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3970                     CMD_STATUS_REJECTED_RADIO_OFF) {
3971                         printk(KERN_INFO
3972                                "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3973                                dev->name);
3974                         return 0;
3975                 }
3976         }
3977
3978         /* set up enough MIB values to run. */
3979         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3980         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3981         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3982         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3983         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3984         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3985         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3986         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3987                       priv->dev->dev_addr, 6);
3988         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3989         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3990         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3991         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3992         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3993         if (priv->use_wpa)
3994                 build_wpa_mib(priv);
3995         else
3996                 build_wep_mib(priv);
3997
3998         if (old_state == STATION_STATE_READY)
3999         {
4000                 union iwreq_data wrqu;
4001
4002                 wrqu.data.length = 0;
4003                 wrqu.data.flags = 0;
4004                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4005                 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4006                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4007         }
4008
4009         return 1;
4010 }
4011
4012 static void atmel_send_command(struct atmel_private *priv, int command,
4013                                void *cmd, int cmd_size)
4014 {
4015         if (cmd)
4016                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4017                                    cmd, cmd_size);
4018
4019         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4020         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4021 }
4022
4023 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4024                                    void *cmd, int cmd_size)
4025 {
4026         int i, status;
4027
4028         atmel_send_command(priv, command, cmd, cmd_size);
4029
4030         for (i = 5000; i; i--) {
4031                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4032                 if (status != CMD_STATUS_IDLE &&
4033                     status != CMD_STATUS_IN_PROGRESS)
4034                         break;
4035                 udelay(20);
4036         }
4037
4038         if (i == 0) {
4039                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4040                 status =  CMD_STATUS_HOST_ERROR;
4041         } else {
4042                 if (command != CMD_EnableRadio)
4043                         status = CMD_STATUS_COMPLETE;
4044         }
4045
4046         return status;
4047 }
4048
4049 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4050 {
4051         struct get_set_mib m;
4052         m.type = type;
4053         m.size = 1;
4054         m.index = index;
4055
4056         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4057         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4058 }
4059
4060 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4061 {
4062         struct get_set_mib m;
4063         m.type = type;
4064         m.size = 1;
4065         m.index = index;
4066         m.data[0] = data;
4067
4068         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4069 }
4070
4071 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4072                             u16 data)
4073 {
4074         struct get_set_mib m;
4075         m.type = type;
4076         m.size = 2;
4077         m.index = index;
4078         m.data[0] = data;
4079         m.data[1] = data >> 8;
4080
4081         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4082 }
4083
4084 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4085                           u8 *data, int data_len)
4086 {
4087         struct get_set_mib m;
4088         m.type = type;
4089         m.size = data_len;
4090         m.index = index;
4091
4092         if (data_len > MIB_MAX_DATA_BYTES)
4093                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4094
4095         memcpy(m.data, data, data_len);
4096         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4097 }
4098
4099 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4100                           u8 *data, int data_len)
4101 {
4102         struct get_set_mib m;
4103         m.type = type;
4104         m.size = data_len;
4105         m.index = index;
4106
4107         if (data_len > MIB_MAX_DATA_BYTES)
4108                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4109
4110         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4111         atmel_copy_to_host(priv->dev, data,
4112                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4113 }
4114
4115 static void atmel_writeAR(struct net_device *dev, u16 data)
4116 {
4117         int i;
4118         outw(data, dev->base_addr + AR);
4119         /* Address register appears to need some convincing..... */
4120         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4121                 outw(data, dev->base_addr + AR);
4122 }
4123
4124 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4125                                unsigned char *src, u16 len)
4126 {
4127         int i;
4128         atmel_writeAR(dev, dest);
4129         if (dest % 2) {
4130                 atmel_write8(dev, DR, *src);
4131                 src++; len--;
4132         }
4133         for (i = len; i > 1 ; i -= 2) {
4134                 u8 lb = *src++;
4135                 u8 hb = *src++;
4136                 atmel_write16(dev, DR, lb | (hb << 8));
4137         }
4138         if (i)
4139                 atmel_write8(dev, DR, *src);
4140 }
4141
4142 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4143                                u16 src, u16 len)
4144 {
4145         int i;
4146         atmel_writeAR(dev, src);
4147         if (src % 2) {
4148                 *dest = atmel_read8(dev, DR);
4149                 dest++; len--;
4150         }
4151         for (i = len; i > 1 ; i -= 2) {
4152                 u16 hw = atmel_read16(dev, DR);
4153                 *dest++ = hw;
4154                 *dest++ = hw >> 8;
4155         }
4156         if (i)
4157                 *dest = atmel_read8(dev, DR);
4158 }
4159
4160 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4161 {
4162         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4163 }
4164
4165 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4166 {
4167         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4168 }
4169
4170 static int atmel_lock_mac(struct atmel_private *priv)
4171 {
4172         int i, j = 20;
4173  retry:
4174         for (i = 5000; i; i--) {
4175                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4176                         break;
4177                 udelay(20);
4178         }
4179
4180         if (!i)
4181                 return 0; /* timed out */
4182
4183         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4184         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4185                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4186                 if (!j--)
4187                         return 0; /* timed out */
4188                 goto retry;
4189         }
4190
4191         return 1;
4192 }
4193
4194 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4195 {
4196         atmel_writeAR(priv->dev, pos);
4197         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4198         atmel_write16(priv->dev, DR, data >> 16);
4199 }
4200
4201 /***************************************************************************/
4202 /* There follows the source form of the MAC address reading firmware       */
4203 /***************************************************************************/
4204 #if 0
4205
4206 /* Copyright 2003 Matthew T. Russotto                                      */
4207 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4208 /* included in "atmel wireless lan drivers" package                        */
4209 /**
4210     This file is part of net.russotto.AtmelMACFW, hereto referred to
4211     as AtmelMACFW
4212
4213     AtmelMACFW is free software; you can redistribute it and/or modify
4214     it under the terms of the GNU General Public License version 2
4215     as published by the Free Software Foundation.
4216
4217     AtmelMACFW is distributed in the hope that it will be useful,
4218     but WITHOUT ANY WARRANTY; without even the implied warranty of
4219     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4220     GNU General Public License for more details.
4221
4222     You should have received a copy of the GNU General Public License
4223     along with AtmelMACFW; if not, write to the Free Software
4224     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
4225
4226 ****************************************************************************/
4227 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4228 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4229 /* It only works on SPI EEPROM versions of the card.                       */
4230
4231 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4232 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4233 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4234 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4235 /* MR4, for investigational purposes (maybe we can determine chip type     */
4236 /* from that?)                                                             */
4237
4238         .org 0
4239     .set MRBASE, 0x8000000
4240         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4241         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4242         .set SRAM_BASE,  0x02000000
4243         .set SP_BASE,    0x0F300000
4244         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4245         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4246         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4247         .set STACK_BASE, 0x5600
4248         .set SP_SR, 0x10
4249         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4250         .set SP_RDRF, 1 /* status register bit -- RDR full */
4251         .set SP_SWRST, 0x80
4252         .set SP_SPIEN, 0x1
4253         .set SP_CR, 0   /* control register */
4254         .set SP_MR, 4   /* mode register */
4255         .set SP_RDR, 0x08 /* Read Data Register */
4256         .set SP_TDR, 0x0C /* Transmit Data Register */
4257         .set SP_CSR0, 0x30 /* chip select registers */
4258         .set SP_CSR1, 0x34
4259         .set SP_CSR2, 0x38
4260         .set SP_CSR3, 0x3C
4261         .set NVRAM_CMD_RDSR, 5 /* read status register */
4262         .set NVRAM_CMD_READ, 3 /* read data */
4263         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4264         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4265                                   serial output, since SO is normally high.  But it
4266                                   does cause 8 clock cycles and thus 8 bits to be
4267                                   clocked in to the chip.  See Atmel's SPI
4268                                   controller (e.g. AT91M55800) timing and 4K
4269                                   SPI EEPROM manuals */
4270
4271         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4272         .set NVRAM_IMAGE, 0x02000200
4273         .set NVRAM_LENGTH, 0x0200
4274         .set MAC_ADDRESS_MIB, SRAM_BASE
4275         .set MAC_ADDRESS_LENGTH, 6
4276         .set MAC_BOOT_FLAG, 0x10
4277         .set MR1, 0
4278         .set MR2, 4
4279         .set MR3, 8
4280         .set MR4, 0xC
4281 RESET_VECTOR:
4282         b RESET_HANDLER
4283 UNDEF_VECTOR:
4284         b HALT1
4285 SWI_VECTOR:
4286         b HALT1
4287 IABORT_VECTOR:
4288         b HALT1
4289 DABORT_VECTOR:
4290 RESERVED_VECTOR:
4291         b HALT1
4292 IRQ_VECTOR:
4293         b HALT1
4294 FIQ_VECTOR:
4295         b HALT1
4296 HALT1:  b HALT1
4297 RESET_HANDLER:
4298         mov     r0, #CPSR_INITIAL
4299         msr     CPSR_c, r0      /* This is probably unnecessary */
4300
4301 /* I'm guessing this is initializing clock generator electronics for SPI */
4302         ldr     r0, =SPI_CGEN_BASE
4303         mov     r1, #0
4304         mov     r1, r1, lsl #3
4305         orr     r1,r1, #0
4306         str     r1, [r0]
4307         ldr     r1, [r0, #28]
4308         bic     r1, r1, #16
4309         str     r1, [r0, #28]
4310         mov     r1, #1
4311         str     r1, [r0, #8]
4312
4313         ldr     r0, =MRBASE
4314         mov     r1, #0
4315         strh    r1, [r0, #MR1]
4316         strh    r1, [r0, #MR2]
4317         strh    r1, [r0, #MR3]
4318         strh    r1, [r0, #MR4]
4319
4320         mov     sp, #STACK_BASE
4321         bl      SP_INIT
4322         mov     r0, #10
4323         bl      DELAY9
4324         bl      GET_MAC_ADDR
4325         bl      GET_WHOLE_NVRAM
4326         ldr     r0, =MRBASE
4327         ldr     r1, =MAC_ADDRESS_MIB
4328         strh    r1, [r0, #MR2]
4329         ldr     r1, =NVRAM_IMAGE
4330         strh    r1, [r0, #MR4]
4331         mov     r1, #MAC_BOOT_FLAG
4332         strh    r1, [r0, #MR3]
4333 HALT2:  b HALT2
4334 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4335 GET_WHOLE_NVRAM:
4336         stmdb   sp!, {lr}
4337         mov     r2, #0 /* 0th bytes of NVRAM */
4338         mov     r3, #NVRAM_LENGTH
4339         mov     r1, #0          /* not used in routine */
4340         ldr     r0, =NVRAM_IMAGE
4341         bl      NVRAM_XFER
4342         ldmia   sp!, {lr}
4343         bx      lr
4344 .endfunc
4345
4346 .func Get_MAC_Addr, GET_MAC_ADDR
4347 GET_MAC_ADDR:
4348         stmdb   sp!, {lr}
4349         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4350         mov     r3, #MAC_ADDRESS_LENGTH
4351         mov     r1, #0          /* not used in routine */
4352         ldr     r0, =MAC_ADDRESS_MIB
4353         bl      NVRAM_XFER
4354         ldmia   sp!, {lr}
4355         bx      lr
4356 .endfunc
4357 .ltorg
4358 .func Delay9, DELAY9
4359 DELAY9:
4360         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4361 DELAYLOOP:
4362         beq     DELAY9_done
4363         subs    r0, r0, #1
4364         b       DELAYLOOP
4365 DELAY9_done:
4366         bx      lr
4367 .endfunc
4368
4369 .func SP_Init, SP_INIT
4370 SP_INIT:
4371         mov     r1, #SP_SWRST
4372         ldr     r0, =SP_BASE
4373         str     r1, [r0, #SP_CR] /* reset the SPI */
4374         mov     r1, #0
4375         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4376         mov     r1, #SP_SPIEN
4377         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4378         str     r1, [r0, #SP_CR] /* enable the SPI */
4379
4380 /*  My guess would be this turns on the SPI clock */
4381         ldr     r3, =SPI_CGEN_BASE
4382         ldr     r1, [r3, #28]
4383         orr     r1, r1, #0x2000
4384         str     r1, [r3, #28]
4385
4386         ldr     r1, =0x2000c01
4387         str     r1, [r0, #SP_CSR0]
4388         ldr     r1, =0x2000201
4389         str     r1, [r0, #SP_CSR1]
4390         str     r1, [r0, #SP_CSR2]
4391         str     r1, [r0, #SP_CSR3]
4392         ldr     r1, [r0, #SP_SR]
4393         ldr     r0, [r0, #SP_RDR]
4394         bx      lr
4395 .endfunc
4396 .func NVRAM_Init, NVRAM_INIT
4397 NVRAM_INIT:
4398         ldr     r1, =SP_BASE
4399         ldr     r0, [r1, #SP_RDR]
4400         mov     r0, #NVRAM_CMD_RDSR
4401         str     r0, [r1, #SP_TDR]
4402 SP_loop1:
4403         ldr     r0, [r1, #SP_SR]
4404         tst     r0, #SP_TDRE
4405         beq     SP_loop1
4406
4407         mov     r0, #SPI_8CLOCKS
4408         str     r0, [r1, #SP_TDR]
4409 SP_loop2:
4410         ldr     r0, [r1, #SP_SR]
4411         tst     r0, #SP_TDRE
4412         beq     SP_loop2
4413
4414         ldr     r0, [r1, #SP_RDR]
4415 SP_loop3:
4416         ldr     r0, [r1, #SP_SR]
4417         tst     r0, #SP_RDRF
4418         beq     SP_loop3
4419
4420         ldr     r0, [r1, #SP_RDR]
4421         and     r0, r0, #255
4422         bx      lr
4423 .endfunc
4424
4425 .func NVRAM_Xfer, NVRAM_XFER
4426         /* r0 = dest address */
4427         /* r1 = not used */
4428         /* r2 = src address within NVRAM */
4429         /* r3 = length */
4430 NVRAM_XFER:
4431         stmdb   sp!, {r4, r5, lr}
4432         mov     r5, r0          /* save r0 (dest address) */
4433         mov     r4, r3          /* save r3 (length) */
4434         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4435         and     r0, r0, #8
4436         add     r0, r0, #NVRAM_CMD_READ
4437         ldr     r1, =NVRAM_SCRATCH
4438         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4439         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4440 _local1:
4441         bl      NVRAM_INIT
4442         tst     r0, #NVRAM_SR_RDY
4443         bne     _local1
4444         mov     r0, #20
4445         bl      DELAY9
4446         mov     r2, r4          /* length */
4447         mov     r1, r5          /* dest address */
4448         mov     r0, #2          /* bytes to transfer in command */
4449         bl      NVRAM_XFER2
4450         ldmia   sp!, {r4, r5, lr}
4451         bx      lr
4452 .endfunc
4453
4454 .func NVRAM_Xfer2, NVRAM_XFER2
4455 NVRAM_XFER2:
4456         stmdb   sp!, {r4, r5, r6, lr}
4457         ldr     r4, =SP_BASE
4458         mov     r3, #0
4459         cmp     r0, #0
4460         bls     _local2
4461         ldr     r5, =NVRAM_SCRATCH
4462 _local4:
4463         ldrb    r6, [r5, r3]
4464         str     r6, [r4, #SP_TDR]
4465 _local3:
4466         ldr     r6, [r4, #SP_SR]
4467         tst     r6, #SP_TDRE
4468         beq     _local3
4469         add     r3, r3, #1
4470         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4471         blo     _local4
4472 _local2:
4473         mov     r3, #SPI_8CLOCKS
4474         str     r3, [r4, #SP_TDR]
4475         ldr     r0, [r4, #SP_RDR]
4476 _local5:
4477         ldr     r0, [r4, #SP_SR]
4478         tst     r0, #SP_RDRF
4479         beq     _local5
4480         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 */
4481         mov     r0, #0
4482         cmp     r2, #0  /* r2 is # of bytes to copy in */
4483         bls     _local6
4484 _local7:
4485         ldr     r5, [r4, #SP_SR]
4486         tst     r5, #SP_TDRE
4487         beq     _local7
4488         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4489 _local8:
4490         ldr     r5, [r4, #SP_SR]
4491         tst     r5, #SP_RDRF
4492         beq     _local8
4493         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4494         strb    r5, [r1], #1 /* postindexed */
4495         add     r0, r0, #1
4496         cmp     r0, r2
4497         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4498 _local6:
4499         mov     r0, #200
4500         bl      DELAY9
4501         ldmia   sp!, {r4, r5, r6, lr}
4502         bx      lr
4503 #endif