drivers/net/wireless/atmel/atmel.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003-2004 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
  12     extensions, (C) Jean Tourrilhes.
  13
  14     The firmware module for reading the MAC address of the card comes from
  15     net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
  16     by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
  17     This file contains the module in binary form and, under the terms
  18     of the GPL, in source form. The source is located at the end of the file.
  19
  20     This program is free software; you can redistribute it and/or modify
  21     it under the terms of the GNU General Public License as published by
  22     the Free Software Foundation; either version 2 of the License, or
  23     (at your option) any later version.
  24
  25     This software is distributed in the hope that it will be useful,
  26     but WITHOUT ANY WARRANTY; without even the implied warranty of
  27     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28     GNU General Public License for more details.
  29
  30     You should have received a copy of the GNU General Public License
  31     along with Atmel wireless lan drivers; if not, see
  32     <http://www.gnu.org/licenses/>.
  33
  34     For all queries about this code, please contact the current author,
  35     Simon Kelley <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/interrupt.h>
  43
  44 #include <linux/kernel.h>
  45 #include <linux/ptrace.h>
  46 #include <linux/slab.h>
  47 #include <linux/string.h>
  48 #include <linux/timer.h>
  49 #include <asm/byteorder.h>
  50 #include <asm/io.h>
  51 #include <linux/uaccess.h>
  52 #include <linux/module.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/skbuff.h>
  56 #include <linux/if_arp.h>
  57 #include <linux/ioport.h>
  58 #include <linux/fcntl.h>
  59 #include <linux/delay.h>
  60 #include <linux/wireless.h>
  61 #include <net/iw_handler.h>
  62 #include <linux/crc32.h>
  63 #include <linux/proc_fs.h>
  64 #include <linux/seq_file.h>
  65 #include <linux/device.h>
  66 #include <linux/moduleparam.h>
  67 #include <linux/firmware.h>
  68 #include <linux/jiffies.h>
  69 #include <net/cfg80211.h>
  70 #include "atmel.h"
  71
  72 #define DRIVER_MAJOR 0
  73 #define DRIVER_MINOR 98
  74
  75 MODULE_AUTHOR("Simon Kelley");
  76 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  77 MODULE_LICENSE("GPL");
  78
  79 /* The name of the firmware file to be loaded
  80    over-rides any automatic selection */
  81 static char *firmware = NULL;
  82 module_param(firmware, charp, 0);
  83
  84 /* table of firmware file names */
  85 static struct {
  86         AtmelFWType fw_type;
  87         const char *fw_file;
  88         const char *fw_file_ext;
  89 } fw_table[] = {
  90         { ATMEL_FW_TYPE_502,            "/*(DEBLOBBED)*/",      "bin" },
  91         { ATMEL_FW_TYPE_502D,           "/*(DEBLOBBED)*/",      "bin" },
  92         { ATMEL_FW_TYPE_502E,           "/*(DEBLOBBED)*/",      "bin" },
  93         { ATMEL_FW_TYPE_502_3COM,       "/*(DEBLOBBED)*/",      "bin" },
  94         { ATMEL_FW_TYPE_504,            "/*(DEBLOBBED)*/",      "bin" },
  95         { ATMEL_FW_TYPE_504_2958,       "/*(DEBLOBBED)*/",      "bin" },
  96         { ATMEL_FW_TYPE_504A_2958,      "/*(DEBLOBBED)*/",      "bin" },
  97         { ATMEL_FW_TYPE_506,            "/*(DEBLOBBED)*/",      "bin" },
  98         { ATMEL_FW_TYPE_NONE,           NULL,                   NULL }
  99 };
 100 /*(DEBLOBBED)*/
 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 structure 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         spinlock_t irqlock, timerlock;  /* spinlocks */
 436         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
 437         enum {
 438                 CARD_TYPE_PARALLEL_FLASH,
 439                 CARD_TYPE_SPI_FLASH,
 440                 CARD_TYPE_EEPROM
 441         } card_type;
 442         int do_rx_crc; /* If we need to CRC incoming packets */
 443         int probe_crc; /* set if we don't yet know */
 444         int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
 445         u16 rx_desc_head;
 446         u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
 447         u16 tx_free_mem, tx_buff_head, tx_buff_tail;
 448
 449         u16 frag_seq, frag_len, frag_no;
 450         u8 frag_source[6];
 451
 452         u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
 453         u8 group_cipher_suite, pairwise_cipher_suite;
 454         u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
 455         int wep_key_len[MAX_ENCRYPTION_KEYS];
 456         int use_wpa, radio_on_broken; /* firmware dependent stuff. */
 457
 458         u16 host_info_base;
 459         struct host_info_struct {
 460                 /* NB this is matched to the hardware, don't change. */
 461                 u8 volatile int_status;
 462                 u8 volatile int_mask;
 463                 u8 volatile lockout_host;
 464                 u8 volatile lockout_mac;
 465
 466                 u16 tx_buff_pos;
 467                 u16 tx_buff_size;
 468                 u16 tx_desc_pos;
 469                 u16 tx_desc_count;
 470
 471                 u16 rx_buff_pos;
 472                 u16 rx_buff_size;
 473                 u16 rx_desc_pos;
 474                 u16 rx_desc_count;
 475
 476                 u16 build_version;
 477                 u16 command_pos;
 478
 479                 u16 major_version;
 480                 u16 minor_version;
 481
 482                 u16 func_ctrl;
 483                 u16 mac_status;
 484                 u16 generic_IRQ_type;
 485                 u8  reserved[2];
 486         } host_info;
 487
 488         enum {
 489                 STATION_STATE_SCANNING,
 490                 STATION_STATE_JOINNING,
 491                 STATION_STATE_AUTHENTICATING,
 492                 STATION_STATE_ASSOCIATING,
 493                 STATION_STATE_READY,
 494                 STATION_STATE_REASSOCIATING,
 495                 STATION_STATE_DOWN,
 496                 STATION_STATE_MGMT_ERROR
 497         } station_state;
 498
 499         int operating_mode, power_mode;
 500         unsigned long last_qual;
 501         int beacons_this_sec;
 502         int channel;
 503         int reg_domain, config_reg_domain;
 504         int tx_rate;
 505         int auto_tx_rate;
 506         int rts_threshold;
 507         int frag_threshold;
 508         int long_retry, short_retry;
 509         int preamble;
 510         int default_beacon_period, beacon_period, listen_interval;
 511         int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
 512         int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
 513         enum {
 514                 SITE_SURVEY_IDLE,
 515                 SITE_SURVEY_IN_PROGRESS,
 516                 SITE_SURVEY_COMPLETED
 517         } site_survey_state;
 518         unsigned long last_survey;
 519
 520         int station_was_associated, station_is_associated;
 521         int fast_scan;
 522
 523         struct bss_info {
 524                 int channel;
 525                 int SSIDsize;
 526                 int RSSI;
 527                 int UsingWEP;
 528                 int preamble;
 529                 int beacon_period;
 530                 int BSStype;
 531                 u8 BSSID[6];
 532                 u8 SSID[MAX_SSID_LENGTH];
 533         } BSSinfo[MAX_BSS_ENTRIES];
 534         int BSS_list_entries, current_BSS;
 535         int connect_to_any_BSS;
 536         int SSID_size, new_SSID_size;
 537         u8 CurrentBSSID[6], BSSID[6];
 538         u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
 539         u64 last_beacon_timestamp;
 540         u8 rx_buf[MAX_WIRELESS_BODY];
 541 };
 542
 543 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
 544
 545 static const struct {
 546         int reg_domain;
 547         int min, max;
 548         char *name;
 549 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
 550                       { REG_DOMAIN_DOC, 1, 11, "Canada" },
 551                       { REG_DOMAIN_ETSI, 1, 13, "Europe" },
 552                       { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
 553                       { REG_DOMAIN_FRANCE, 10, 13, "France" },
 554                       { REG_DOMAIN_MKK, 14, 14, "MKK" },
 555                       { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
 556                       { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
 557
 558 static void build_wpa_mib(struct atmel_private *priv);
 559 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 560 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
 561                                const unsigned char *src, u16 len);
 562 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
 563                                u16 src, u16 len);
 564 static void atmel_set_gcr(struct net_device *dev, u16 mask);
 565 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
 566 static int atmel_lock_mac(struct atmel_private *priv);
 567 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
 568 static void atmel_command_irq(struct atmel_private *priv);
 569 static int atmel_validate_channel(struct atmel_private *priv, int channel);
 570 static void atmel_management_frame(struct atmel_private *priv,
 571                                    struct ieee80211_hdr *header,
 572                                    u16 frame_len, u8 rssi);
 573 static void atmel_management_timer(struct timer_list *t);
 574 static void atmel_send_command(struct atmel_private *priv, int command,
 575                                void *cmd, int cmd_size);
 576 static int atmel_send_command_wait(struct atmel_private *priv, int command,
 577                                    void *cmd, int cmd_size);
 578 static void atmel_transmit_management_frame(struct atmel_private *priv,
 579                                             struct ieee80211_hdr *header,
 580                                             u8 *body, int body_len);
 581
 582 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
 583 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
 584                            u8 data);
 585 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
 586                             u16 data);
 587 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
 588                           const u8 *data, int data_len);
 589 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
 590                           u8 *data, int data_len);
 591 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
 592 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
 593 static void atmel_smooth_qual(struct atmel_private *priv);
 594 static void atmel_writeAR(struct net_device *dev, u16 data);
 595 static int probe_atmel_card(struct net_device *dev);
 596 static int reset_atmel_card(struct net_device *dev);
 597 static void atmel_enter_state(struct atmel_private *priv, int new_state);
 598 int atmel_open (struct net_device *dev);
 599
 600 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
 601 {
 602         return priv->host_info_base + offset;
 603 }
 604
 605 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
 606 {
 607         return priv->host_info.command_pos + offset;
 608 }
 609
 610 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
 611 {
 612         return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
 613 }
 614
 615 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
 616 {
 617         return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
 618 }
 619
 620 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
 621 {
 622         return inb(dev->base_addr + offset);
 623 }
 624
 625 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
 626 {
 627         outb(data, dev->base_addr + offset);
 628 }
 629
 630 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
 631 {
 632         return inw(dev->base_addr + offset);
 633 }
 634
 635 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
 636 {
 637         outw(data, dev->base_addr + offset);
 638 }
 639
 640 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
 641 {
 642         atmel_writeAR(priv->dev, pos);
 643         return atmel_read8(priv->dev, DR);
 644 }
 645
 646 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
 647 {
 648         atmel_writeAR(priv->dev, pos);
 649         atmel_write8(priv->dev, DR, data);
 650 }
 651
 652 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
 653 {
 654         atmel_writeAR(priv->dev, pos);
 655         return atmel_read16(priv->dev, DR);
 656 }
 657
 658 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
 659 {
 660         atmel_writeAR(priv->dev, pos);
 661         atmel_write16(priv->dev, DR, data);
 662 }
 663
 664 static const struct iw_handler_def atmel_handler_def;
 665
 666 static void tx_done_irq(struct atmel_private *priv)
 667 {
 668         int i;
 669
 670         for (i = 0;
 671              atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
 672                      i < priv->host_info.tx_desc_count;
 673              i++) {
 674                 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
 675                 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
 676                 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
 677
 678                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
 679
 680                 priv->tx_free_mem += msdu_size;
 681                 priv->tx_desc_free++;
 682
 683                 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
 684                         priv->tx_buff_head = 0;
 685                 else
 686                         priv->tx_buff_head += msdu_size;
 687
 688                 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
 689                         priv->tx_desc_head++ ;
 690                 else
 691                         priv->tx_desc_head = 0;
 692
 693                 if (type == TX_PACKET_TYPE_DATA) {
 694                         if (status == TX_STATUS_SUCCESS)
 695                                 priv->dev->stats.tx_packets++;
 696                         else
 697                                 priv->dev->stats.tx_errors++;
 698                         netif_wake_queue(priv->dev);
 699                 }
 700         }
 701 }
 702
 703 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
 704 {
 705         u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
 706
 707         if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
 708                 return 0;
 709
 710         if (bottom_free >= len)
 711                 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
 712
 713         if (priv->tx_free_mem - bottom_free >= len) {
 714                 priv->tx_buff_tail = 0;
 715                 return priv->host_info.tx_buff_pos;
 716         }
 717
 718         return 0;
 719 }
 720
 721 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 722                                  u16 len, u16 buff, u8 type)
 723 {
 724         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
 725         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
 726         if (!priv->use_wpa)
 727                 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
 728         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
 729         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
 730         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
 731         if (priv->use_wpa) {
 732                 int cipher_type, cipher_length;
 733                 if (is_bcast) {
 734                         cipher_type = priv->group_cipher_suite;
 735                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 736                             cipher_type == CIPHER_SUITE_WEP_128)
 737                                 cipher_length = 8;
 738                         else if (cipher_type == CIPHER_SUITE_TKIP)
 739                                 cipher_length = 12;
 740                         else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
 741                                  priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
 742                                 cipher_type = priv->pairwise_cipher_suite;
 743                                 cipher_length = 8;
 744                         } else {
 745                                 cipher_type = CIPHER_SUITE_NONE;
 746                                 cipher_length = 0;
 747                         }
 748                 } else {
 749                         cipher_type = priv->pairwise_cipher_suite;
 750                         if (cipher_type == CIPHER_SUITE_WEP_64 ||
 751                             cipher_type == CIPHER_SUITE_WEP_128)
 752                                 cipher_length = 8;
 753                         else if (cipher_type == CIPHER_SUITE_TKIP)
 754                                 cipher_length = 12;
 755                         else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
 756                                  priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
 757                                 cipher_type = priv->group_cipher_suite;
 758                                 cipher_length = 8;
 759                         } else {
 760                                 cipher_type = CIPHER_SUITE_NONE;
 761                                 cipher_length = 0;
 762                         }
 763                 }
 764
 765                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
 766                             cipher_type);
 767                 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
 768                             cipher_length);
 769         }
 770         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
 771         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
 772         if (priv->tx_desc_previous != priv->tx_desc_tail)
 773                 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
 774         priv->tx_desc_previous = priv->tx_desc_tail;
 775         if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
 776                 priv->tx_desc_tail++;
 777         else
 778                 priv->tx_desc_tail = 0;
 779         priv->tx_desc_free--;
 780         priv->tx_free_mem -= len;
 781 }
 782
 783 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 784 {
 785         struct atmel_private *priv = netdev_priv(dev);
 786         struct ieee80211_hdr header;
 787         unsigned long flags;
 788         u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
 789
 790         if (priv->card && priv->present_callback &&
 791             !(*priv->present_callback)(priv->card)) {
 792                 dev->stats.tx_errors++;
 793                 dev_kfree_skb(skb);
 794                 return NETDEV_TX_OK;
 795         }
 796
 797         if (priv->station_state != STATION_STATE_READY) {
 798                 dev->stats.tx_errors++;
 799                 dev_kfree_skb(skb);
 800                 return NETDEV_TX_OK;
 801         }
 802
 803         /* first ensure the timer func cannot run */
 804         spin_lock_bh(&priv->timerlock);
 805         /* then stop the hardware ISR */
 806         spin_lock_irqsave(&priv->irqlock, flags);
 807         /* nb doing the above in the opposite order will deadlock */
 808
 809         /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
 810            12 first bytes (containing DA/SA) and put them in the appropriate
 811            fields of the Wireless Header. Thus the packet length is then the
 812            initial + 18 (+30-12) */
 813
 814         if (!(buff = find_tx_buff(priv, len + 18))) {
 815                 dev->stats.tx_dropped++;
 816                 spin_unlock_irqrestore(&priv->irqlock, flags);
 817                 spin_unlock_bh(&priv->timerlock);
 818                 netif_stop_queue(dev);
 819                 return NETDEV_TX_BUSY;
 820         }
 821
 822         frame_ctl = IEEE80211_FTYPE_DATA;
 823         header.duration_id = 0;
 824         header.seq_ctrl = 0;
 825         if (priv->wep_is_on)
 826                 frame_ctl |= IEEE80211_FCTL_PROTECTED;
 827         if (priv->operating_mode == IW_MODE_ADHOC) {
 828                 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
 829                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 830                 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
 831         } else {
 832                 frame_ctl |= IEEE80211_FCTL_TODS;
 833                 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
 834                 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
 835                 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
 836         }
 837
 838         if (priv->use_wpa)
 839                 memcpy(&header.addr4, rfc1042_header, ETH_ALEN);
 840
 841         header.frame_control = cpu_to_le16(frame_ctl);
 842         /* Copy the wireless header into the card */
 843         atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
 844         /* Copy the packet sans its 802.3 header addresses which have been replaced */
 845         atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
 846         priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
 847
 848         /* low bit of first byte of destination tells us if broadcast */
 849         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
 850         dev->stats.tx_bytes += len;
 851
 852         spin_unlock_irqrestore(&priv->irqlock, flags);
 853         spin_unlock_bh(&priv->timerlock);
 854         dev_kfree_skb(skb);
 855
 856         return NETDEV_TX_OK;
 857 }
 858
 859 static void atmel_transmit_management_frame(struct atmel_private *priv,
 860                                             struct ieee80211_hdr *header,
 861                                             u8 *body, int body_len)
 862 {
 863         u16 buff;
 864         int len = MGMT_FRAME_BODY_OFFSET + body_len;
 865
 866         if (!(buff = find_tx_buff(priv, len)))
 867                 return;
 868
 869         atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
 870         atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
 871         priv->tx_buff_tail += len;
 872         tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
 873 }
 874
 875 static void fast_rx_path(struct atmel_private *priv,
 876                          struct ieee80211_hdr *header,
 877                          u16 msdu_size, u16 rx_packet_loc, u32 crc)
 878 {
 879         /* fast path: unfragmented packet copy directly into skbuf */
 880         u8 mac4[6];
 881         struct sk_buff  *skb;
 882         unsigned char *skbp;
 883
 884         /* get the final, mac 4 header field, this tells us encapsulation */
 885         atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
 886         msdu_size -= 6;
 887
 888         if (priv->do_rx_crc) {
 889                 crc = crc32_le(crc, mac4, 6);
 890                 msdu_size -= 4;
 891         }
 892
 893         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
 894                 priv->dev->stats.rx_dropped++;
 895                 return;
 896         }
 897
 898         skb_reserve(skb, 2);
 899         skbp = skb_put(skb, msdu_size + 12);
 900         atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
 901
 902         if (priv->do_rx_crc) {
 903                 u32 netcrc;
 904                 crc = crc32_le(crc, skbp + 12, msdu_size);
 905                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
 906                 if ((crc ^ 0xffffffff) != netcrc) {
 907                         priv->dev->stats.rx_crc_errors++;
 908                         dev_kfree_skb(skb);
 909                         return;
 910                 }
 911         }
 912
 913         memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
 914         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 915                 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
 916         else
 917                 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
 918
 919         skb->protocol = eth_type_trans(skb, priv->dev);
 920         skb->ip_summed = CHECKSUM_NONE;
 921         netif_rx(skb);
 922         priv->dev->stats.rx_bytes += 12 + msdu_size;
 923         priv->dev->stats.rx_packets++;
 924 }
 925
 926 /* Test to see if the packet in card memory at packet_loc has a valid CRC
 927    It doesn't matter that this is slow: it is only used to proble the first few
 928    packets. */
 929 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
 930 {
 931         int i = msdu_size - 4;
 932         u32 netcrc, crc = 0xffffffff;
 933
 934         if (msdu_size < 4)
 935                 return 0;
 936
 937         atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
 938
 939         atmel_writeAR(priv->dev, packet_loc);
 940         while (i--) {
 941                 u8 octet = atmel_read8(priv->dev, DR);
 942                 crc = crc32_le(crc, &octet, 1);
 943         }
 944
 945         return (crc ^ 0xffffffff) == netcrc;
 946 }
 947
 948 static void frag_rx_path(struct atmel_private *priv,
 949                          struct ieee80211_hdr *header,
 950                          u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
 951                          u8 frag_no, int more_frags)
 952 {
 953         u8 mac4[ETH_ALEN];
 954         u8 source[ETH_ALEN];
 955         struct sk_buff *skb;
 956
 957         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
 958                 memcpy(source, header->addr3, ETH_ALEN);
 959         else
 960                 memcpy(source, header->addr2, ETH_ALEN);
 961
 962         rx_packet_loc += 24; /* skip header */
 963
 964         if (priv->do_rx_crc)
 965                 msdu_size -= 4;
 966
 967         if (frag_no == 0) { /* first fragment */
 968                 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
 969                 msdu_size -= ETH_ALEN;
 970                 rx_packet_loc += ETH_ALEN;
 971
 972                 if (priv->do_rx_crc)
 973                         crc = crc32_le(crc, mac4, 6);
 974
 975                 priv->frag_seq = seq_no;
 976                 priv->frag_no = 1;
 977                 priv->frag_len = msdu_size;
 978                 memcpy(priv->frag_source, source, ETH_ALEN);
 979                 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
 980                 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
 981
 982                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
 983
 984                 if (priv->do_rx_crc) {
 985                         u32 netcrc;
 986                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
 987                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
 988                         if ((crc ^ 0xffffffff) != netcrc) {
 989                                 priv->dev->stats.rx_crc_errors++;
 990                                 eth_broadcast_addr(priv->frag_source);
 991                         }
 992                 }
 993
 994         } else if (priv->frag_no == frag_no &&
 995                    priv->frag_seq == seq_no &&
 996                    memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
 997
 998                 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
 999                                    rx_packet_loc, msdu_size);
1000                 if (priv->do_rx_crc) {
1001                         u32 netcrc;
1002                         crc = crc32_le(crc,
1003                                        &priv->rx_buf[12 + priv->frag_len],
1004                                        msdu_size);
1005                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1006                         if ((crc ^ 0xffffffff) != netcrc) {
1007                                 priv->dev->stats.rx_crc_errors++;
1008                                 eth_broadcast_addr(priv->frag_source);
1009                                 more_frags = 1; /* don't send broken assembly */
1010                         }
1011                 }
1012
1013                 priv->frag_len += msdu_size;
1014                 priv->frag_no++;
1015
1016                 if (!more_frags) { /* last one */
1017                         eth_broadcast_addr(priv->frag_source);
1018                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1019                                 priv->dev->stats.rx_dropped++;
1020                         } else {
1021                                 skb_reserve(skb, 2);
1022                                 skb_put_data(skb, priv->rx_buf,
1023                                              priv->frag_len + 12);
1024                                 skb->protocol = eth_type_trans(skb, priv->dev);
1025                                 skb->ip_summed = CHECKSUM_NONE;
1026                                 netif_rx(skb);
1027                                 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1028                                 priv->dev->stats.rx_packets++;
1029                         }
1030                 }
1031         } else
1032                 priv->wstats.discard.fragment++;
1033 }
1034
1035 static void rx_done_irq(struct atmel_private *priv)
1036 {
1037         int i;
1038         struct ieee80211_hdr header;
1039
1040         for (i = 0;
1041              atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1042                      i < priv->host_info.rx_desc_count;
1043              i++) {
1044
1045                 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1046                 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1047                 u32 crc = 0xffffffff;
1048
1049                 if (status != RX_STATUS_SUCCESS) {
1050                         if (status == 0xc1) /* determined by experiment */
1051                                 priv->wstats.discard.nwid++;
1052                         else
1053                                 priv->dev->stats.rx_errors++;
1054                         goto next;
1055                 }
1056
1057                 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1058                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1059
1060                 if (msdu_size < 30) {
1061                         priv->dev->stats.rx_errors++;
1062                         goto next;
1063                 }
1064
1065                 /* Get header as far as end of seq_ctrl */
1066                 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1067                 frame_ctl = le16_to_cpu(header.frame_control);
1068                 seq_control = le16_to_cpu(header.seq_ctrl);
1069
1070                 /* probe for CRC use here if needed  once five packets have
1071                    arrived with the same crc status, we assume we know what's
1072                    happening and stop probing */
1073                 if (priv->probe_crc) {
1074                         if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1075                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1076                         } else {
1077                                 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1078                         }
1079                         if (priv->do_rx_crc) {
1080                                 if (priv->crc_ok_cnt++ > 5)
1081                                         priv->probe_crc = 0;
1082                         } else {
1083                                 if (priv->crc_ko_cnt++ > 5)
1084                                         priv->probe_crc = 0;
1085                         }
1086                 }
1087
1088                 /* don't CRC header when WEP in use */
1089                 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1090                         crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1091                 }
1092                 msdu_size -= 24; /* header */
1093
1094                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1095                         int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1096                         u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1097                         u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1098
1099                         if (!more_fragments && packet_fragment_no == 0) {
1100                                 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1101                         } else {
1102                                 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1103                                              packet_sequence_no, packet_fragment_no, more_fragments);
1104                         }
1105                 }
1106
1107                 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1108                         /* copy rest of packet into buffer */
1109                         atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1110
1111                         /* we use the same buffer for frag reassembly and control packets */
1112                         eth_broadcast_addr(priv->frag_source);
1113
1114                         if (priv->do_rx_crc) {
1115                                 /* last 4 octets is crc */
1116                                 msdu_size -= 4;
1117                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1118                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1119                                         priv->dev->stats.rx_crc_errors++;
1120                                         goto next;
1121                                 }
1122                         }
1123
1124                         atmel_management_frame(priv, &header, msdu_size,
1125                                                atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1126                 }
1127
1128 next:
1129                 /* release descriptor */
1130                 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1131
1132                 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1133                         priv->rx_desc_head++;
1134                 else
1135                         priv->rx_desc_head = 0;
1136         }
1137 }
1138
1139 static irqreturn_t service_interrupt(int irq, void *dev_id)
1140 {
1141         struct net_device *dev = (struct net_device *) dev_id;
1142         struct atmel_private *priv = netdev_priv(dev);
1143         u8 isr;
1144         int i = -1;
1145         static const u8 irq_order[] = {
1146                 ISR_OUT_OF_RANGE,
1147                 ISR_RxCOMPLETE,
1148                 ISR_TxCOMPLETE,
1149                 ISR_RxFRAMELOST,
1150                 ISR_FATAL_ERROR,
1151                 ISR_COMMAND_COMPLETE,
1152                 ISR_IBSS_MERGE,
1153                 ISR_GENERIC_IRQ
1154         };
1155
1156         if (priv->card && priv->present_callback &&
1157             !(*priv->present_callback)(priv->card))
1158                 return IRQ_HANDLED;
1159
1160         /* In this state upper-level code assumes it can mess with
1161            the card unhampered by interrupts which may change register state.
1162            Note that even though the card shouldn't generate interrupts
1163            the inturrupt line may be shared. This allows card setup
1164            to go on without disabling interrupts for a long time. */
1165         if (priv->station_state == STATION_STATE_DOWN)
1166                 return IRQ_NONE;
1167
1168         atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1169
1170         while (1) {
1171                 if (!atmel_lock_mac(priv)) {
1172                         /* failed to contact card */
1173                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1174                         return IRQ_HANDLED;
1175                 }
1176
1177                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1178                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1179
1180                 if (!isr) {
1181                         atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1182                         return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1183                 }
1184
1185                 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1186
1187                 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1188                         if (isr & irq_order[i])
1189                                 break;
1190
1191                 if (!atmel_lock_mac(priv)) {
1192                         /* failed to contact card */
1193                         printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1194                         return IRQ_HANDLED;
1195                 }
1196
1197                 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1198                 isr ^= irq_order[i];
1199                 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1200                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1201
1202                 switch (irq_order[i]) {
1203
1204                 case ISR_OUT_OF_RANGE:
1205                         if (priv->operating_mode == IW_MODE_INFRA &&
1206                             priv->station_state == STATION_STATE_READY) {
1207                                 priv->station_is_associated = 0;
1208                                 atmel_scan(priv, 1);
1209                         }
1210                         break;
1211
1212                 case ISR_RxFRAMELOST:
1213                         priv->wstats.discard.misc++;
1214                         fallthrough;
1215                 case ISR_RxCOMPLETE:
1216                         rx_done_irq(priv);
1217                         break;
1218
1219                 case ISR_TxCOMPLETE:
1220                         tx_done_irq(priv);
1221                         break;
1222
1223                 case ISR_FATAL_ERROR:
1224                         printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1225                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1226                         break;
1227
1228                 case ISR_COMMAND_COMPLETE:
1229                         atmel_command_irq(priv);
1230                         break;
1231
1232                 case ISR_IBSS_MERGE:
1233                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1234                                       priv->CurrentBSSID, 6);
1235                         /* The WPA stuff cares about the current AP address */
1236                         if (priv->use_wpa)
1237                                 build_wpa_mib(priv);
1238                         break;
1239                 case ISR_GENERIC_IRQ:
1240                         printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1241                         break;
1242                 }
1243         }
1244 }
1245
1246 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1247 {
1248         struct atmel_private *priv = netdev_priv(dev);
1249
1250         /* update the link quality here in case we are seeing no beacons
1251            at all to drive the process */
1252         atmel_smooth_qual(priv);
1253
1254         priv->wstats.status = priv->station_state;
1255
1256         if (priv->operating_mode == IW_MODE_INFRA) {
1257                 if (priv->station_state != STATION_STATE_READY) {
1258                         priv->wstats.qual.qual = 0;
1259                         priv->wstats.qual.level = 0;
1260                         priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1261                                         | IW_QUAL_LEVEL_INVALID);
1262                 }
1263                 priv->wstats.qual.noise = 0;
1264                 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1265         } else {
1266                 /* Quality levels cannot be determined in ad-hoc mode,
1267                    because we can 'hear' more that one remote station. */
1268                 priv->wstats.qual.qual = 0;
1269                 priv->wstats.qual.level = 0;
1270                 priv->wstats.qual.noise = 0;
1271                 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1272                                         | IW_QUAL_LEVEL_INVALID
1273                                         | IW_QUAL_NOISE_INVALID;
1274                 priv->wstats.miss.beacon = 0;
1275         }
1276
1277         return &priv->wstats;
1278 }
1279
1280 static int atmel_set_mac_address(struct net_device *dev, void *p)
1281 {
1282         struct sockaddr *addr = p;
1283
1284         eth_hw_addr_set(dev, addr->sa_data);
1285         return atmel_open(dev);
1286 }
1287
1288 EXPORT_SYMBOL(atmel_open);
1289
1290 int atmel_open(struct net_device *dev)
1291 {
1292         struct atmel_private *priv = netdev_priv(dev);
1293         int i, channel, err;
1294
1295         /* any scheduled timer is no longer needed and might screw things up.. */
1296         del_timer_sync(&priv->management_timer);
1297
1298         /* Interrupts will not touch the card once in this state... */
1299         priv->station_state = STATION_STATE_DOWN;
1300
1301         if (priv->new_SSID_size) {
1302                 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1303                 priv->SSID_size = priv->new_SSID_size;
1304                 priv->new_SSID_size = 0;
1305         }
1306         priv->BSS_list_entries = 0;
1307
1308         priv->AuthenticationRequestRetryCnt = 0;
1309         priv->AssociationRequestRetryCnt = 0;
1310         priv->ReAssociationRequestRetryCnt = 0;
1311         priv->CurrentAuthentTransactionSeqNum = 0x0001;
1312         priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1313
1314         priv->site_survey_state = SITE_SURVEY_IDLE;
1315         priv->station_is_associated = 0;
1316
1317         err = reset_atmel_card(dev);
1318         if (err)
1319                 return err;
1320
1321         if (priv->config_reg_domain) {
1322                 priv->reg_domain = priv->config_reg_domain;
1323                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1324         } else {
1325                 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1326                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1327                         if (priv->reg_domain == channel_table[i].reg_domain)
1328                                 break;
1329                 if (i == ARRAY_SIZE(channel_table)) {
1330                         priv->reg_domain = REG_DOMAIN_MKK1;
1331                         printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1332                 }
1333         }
1334
1335         if ((channel = atmel_validate_channel(priv, priv->channel)))
1336                 priv->channel = channel;
1337
1338         /* this moves station_state on.... */
1339         atmel_scan(priv, 1);
1340
1341         atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1342         return 0;
1343 }
1344
1345 static int atmel_close(struct net_device *dev)
1346 {
1347         struct atmel_private *priv = netdev_priv(dev);
1348
1349         /* Send event to userspace that we are disassociating */
1350         if (priv->station_state == STATION_STATE_READY) {
1351                 union iwreq_data wrqu;
1352
1353                 wrqu.data.length = 0;
1354                 wrqu.data.flags = 0;
1355                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1356                 eth_zero_addr(wrqu.ap_addr.sa_data);
1357                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1358         }
1359
1360         atmel_enter_state(priv, STATION_STATE_DOWN);
1361
1362         if (priv->bus_type == BUS_TYPE_PCCARD)
1363                 atmel_write16(dev, GCR, 0x0060);
1364         atmel_write16(dev, GCR, 0x0040);
1365         return 0;
1366 }
1367
1368 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1369 {
1370         /* check that channel is OK, if so return zero,
1371            else return suitable default channel */
1372         int i;
1373
1374         for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1375                 if (priv->reg_domain == channel_table[i].reg_domain) {
1376                         if (channel >= channel_table[i].min &&
1377                             channel <= channel_table[i].max)
1378                                 return 0;
1379                         else
1380                                 return channel_table[i].min;
1381                 }
1382         return 0;
1383 }
1384
1385 #ifdef CONFIG_PROC_FS
1386 static int atmel_proc_show(struct seq_file *m, void *v)
1387 {
1388         struct atmel_private *priv = m->private;
1389         int i;
1390         char *s, *r, *c;
1391
1392         seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1393
1394         if (priv->station_state != STATION_STATE_DOWN) {
1395                 seq_printf(m,
1396                            "Firmware version:\t%d.%d build %d\n"
1397                            "Firmware location:\t",
1398                            priv->host_info.major_version,
1399                            priv->host_info.minor_version,
1400                            priv->host_info.build_version);
1401
1402                 if (priv->card_type != CARD_TYPE_EEPROM)
1403                         seq_puts(m, "on card\n");
1404                 else if (priv->firmware)
1405                         seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1406                 else
1407                         seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1408
1409                 switch (priv->card_type) {
1410                 case CARD_TYPE_PARALLEL_FLASH:
1411                         c = "Parallel flash";
1412                         break;
1413                 case CARD_TYPE_SPI_FLASH:
1414                         c = "SPI flash\n";
1415                         break;
1416                 case CARD_TYPE_EEPROM:
1417                         c = "EEPROM";
1418                         break;
1419                 default:
1420                         c = "<unknown>";
1421                 }
1422
1423                 r = "<unknown>";
1424                 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1425                         if (priv->reg_domain == channel_table[i].reg_domain)
1426                                 r = channel_table[i].name;
1427
1428                 seq_printf(m, "MAC memory type:\t%s\n", c);
1429                 seq_printf(m, "Regulatory domain:\t%s\n", r);
1430                 seq_printf(m, "Host CRC checking:\t%s\n",
1431                          priv->do_rx_crc ? "On" : "Off");
1432                 seq_printf(m, "WPA-capable firmware:\t%s\n",
1433                          priv->use_wpa ? "Yes" : "No");
1434         }
1435
1436         switch (priv->station_state) {
1437         case STATION_STATE_SCANNING:
1438                 s = "Scanning";
1439                 break;
1440         case STATION_STATE_JOINNING:
1441                 s = "Joining";
1442                 break;
1443         case STATION_STATE_AUTHENTICATING:
1444                 s = "Authenticating";
1445                 break;
1446         case STATION_STATE_ASSOCIATING:
1447                 s = "Associating";
1448                 break;
1449         case STATION_STATE_READY:
1450                 s = "Ready";
1451                 break;
1452         case STATION_STATE_REASSOCIATING:
1453                 s = "Reassociating";
1454                 break;
1455         case STATION_STATE_MGMT_ERROR:
1456                 s = "Management error";
1457                 break;
1458         case STATION_STATE_DOWN:
1459                 s = "Down";
1460                 break;
1461         default:
1462                 s = "<unknown>";
1463         }
1464
1465         seq_printf(m, "Current state:\t\t%s\n", s);
1466         return 0;
1467 }
1468 #endif
1469
1470 static const struct net_device_ops atmel_netdev_ops = {
1471         .ndo_open               = atmel_open,
1472         .ndo_stop               = atmel_close,
1473         .ndo_set_mac_address    = atmel_set_mac_address,
1474         .ndo_start_xmit         = start_tx,
1475         .ndo_do_ioctl           = atmel_ioctl,
1476         .ndo_validate_addr      = eth_validate_addr,
1477 };
1478
1479 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1480                                    const AtmelFWType fw_type,
1481                                    struct device *sys_dev,
1482                                    int (*card_present)(void *), void *card)
1483 {
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                 return NULL;
1492
1493         if (dev_alloc_name(dev, dev->name) < 0) {
1494                 printk(KERN_ERR "atmel: Couldn't get name!\n");
1495                 goto err_out_free;
1496         }
1497
1498         priv = netdev_priv(dev);
1499         priv->dev = dev;
1500         priv->sys_dev = sys_dev;
1501         priv->present_callback = card_present;
1502         priv->card = card;
1503         priv->firmware = NULL;
1504         priv->firmware_type = fw_type;
1505         if (firmware) /* module parameter */
1506                 strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id));
1507         priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1508         priv->station_state = STATION_STATE_DOWN;
1509         priv->do_rx_crc = 0;
1510         /* For PCMCIA cards, some chips need CRC, some don't
1511            so we have to probe. */
1512         if (priv->bus_type == BUS_TYPE_PCCARD) {
1513                 priv->probe_crc = 1;
1514                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1515         } else
1516                 priv->probe_crc = 0;
1517         priv->last_qual = jiffies;
1518         priv->last_beacon_timestamp = 0;
1519         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1520         eth_zero_addr(priv->BSSID);
1521         priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1522         priv->station_was_associated = 0;
1523
1524         priv->last_survey = jiffies;
1525         priv->preamble = LONG_PREAMBLE;
1526         priv->operating_mode = IW_MODE_INFRA;
1527         priv->connect_to_any_BSS = 0;
1528         priv->config_reg_domain = 0;
1529         priv->reg_domain = 0;
1530         priv->tx_rate = 3;
1531         priv->auto_tx_rate = 1;
1532         priv->channel = 4;
1533         priv->power_mode = 0;
1534         priv->SSID[0] = '\0';
1535         priv->SSID_size = 0;
1536         priv->new_SSID_size = 0;
1537         priv->frag_threshold = 2346;
1538         priv->rts_threshold = 2347;
1539         priv->short_retry = 7;
1540         priv->long_retry = 4;
1541
1542         priv->wep_is_on = 0;
1543         priv->default_key = 0;
1544         priv->encryption_level = 0;
1545         priv->exclude_unencrypted = 0;
1546         priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1547         priv->use_wpa = 0;
1548         memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1549         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1550
1551         priv->default_beacon_period = priv->beacon_period = 100;
1552         priv->listen_interval = 1;
1553
1554         timer_setup(&priv->management_timer, atmel_management_timer, 0);
1555         spin_lock_init(&priv->irqlock);
1556         spin_lock_init(&priv->timerlock);
1557
1558         dev->netdev_ops = &atmel_netdev_ops;
1559         dev->wireless_handlers = &atmel_handler_def;
1560         dev->irq = irq;
1561         dev->base_addr = port;
1562
1563         /* MTU range: 68 - 2312 */
1564         dev->min_mtu = 68;
1565         dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1566
1567         SET_NETDEV_DEV(dev, sys_dev);
1568
1569         if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1570                 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1571                 goto err_out_free;
1572         }
1573
1574         if (!request_region(dev->base_addr, 32,
1575                             priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
1576                 goto err_out_irq;
1577         }
1578
1579         if (register_netdev(dev))
1580                 goto err_out_res;
1581
1582         if (!probe_atmel_card(dev)) {
1583                 unregister_netdev(dev);
1584                 goto err_out_res;
1585         }
1586
1587         netif_carrier_off(dev);
1588
1589         if (!proc_create_single_data("driver/atmel", 0, NULL, atmel_proc_show,
1590                         priv))
1591                 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1592
1593         printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1594                dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1595
1596         return dev;
1597
1598 err_out_res:
1599         release_region(dev->base_addr, 32);
1600 err_out_irq:
1601         free_irq(dev->irq, dev);
1602 err_out_free:
1603         free_netdev(dev);
1604         return NULL;
1605 }
1606
1607 EXPORT_SYMBOL(init_atmel_card);
1608
1609 void stop_atmel_card(struct net_device *dev)
1610 {
1611         struct atmel_private *priv = netdev_priv(dev);
1612
1613         /* put a brick on it... */
1614         if (priv->bus_type == BUS_TYPE_PCCARD)
1615                 atmel_write16(dev, GCR, 0x0060);
1616         atmel_write16(dev, GCR, 0x0040);
1617
1618         del_timer_sync(&priv->management_timer);
1619         unregister_netdev(dev);
1620         remove_proc_entry("driver/atmel", NULL);
1621         free_irq(dev->irq, dev);
1622         kfree(priv->firmware);
1623         release_region(dev->base_addr, 32);
1624         free_netdev(dev);
1625 }
1626
1627 EXPORT_SYMBOL(stop_atmel_card);
1628
1629 static int atmel_set_essid(struct net_device *dev,
1630                            struct iw_request_info *info,
1631                            struct iw_point *dwrq,
1632                            char *extra)
1633 {
1634         struct atmel_private *priv = netdev_priv(dev);
1635
1636         /* Check if we asked for `any' */
1637         if (dwrq->flags == 0) {
1638                 priv->connect_to_any_BSS = 1;
1639         } else {
1640                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1641
1642                 priv->connect_to_any_BSS = 0;
1643
1644                 /* Check the size of the string */
1645                 if (dwrq->length > MAX_SSID_LENGTH)
1646                          return -E2BIG;
1647                 if (index != 0)
1648                         return -EINVAL;
1649
1650                 memcpy(priv->new_SSID, extra, dwrq->length);
1651                 priv->new_SSID_size = dwrq->length;
1652         }
1653
1654         return -EINPROGRESS;
1655 }
1656
1657 static int atmel_get_essid(struct net_device *dev,
1658                            struct iw_request_info *info,
1659                            struct iw_point *dwrq,
1660                            char *extra)
1661 {
1662         struct atmel_private *priv = netdev_priv(dev);
1663
1664         /* Get the current SSID */
1665         if (priv->new_SSID_size != 0) {
1666                 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1667                 dwrq->length = priv->new_SSID_size;
1668         } else {
1669                 memcpy(extra, priv->SSID, priv->SSID_size);
1670                 dwrq->length = priv->SSID_size;
1671         }
1672
1673         dwrq->flags = !priv->connect_to_any_BSS; /* active */
1674
1675         return 0;
1676 }
1677
1678 static int atmel_get_wap(struct net_device *dev,
1679                          struct iw_request_info *info,
1680                          struct sockaddr *awrq,
1681                          char *extra)
1682 {
1683         struct atmel_private *priv = netdev_priv(dev);
1684         memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1685         awrq->sa_family = ARPHRD_ETHER;
1686
1687         return 0;
1688 }
1689
1690 static int atmel_set_encode(struct net_device *dev,
1691                             struct iw_request_info *info,
1692                             struct iw_point *dwrq,
1693                             char *extra)
1694 {
1695         struct atmel_private *priv = netdev_priv(dev);
1696
1697         /* Basic checking: do we have a key to set ?
1698          * Note : with the new API, it's impossible to get a NULL pointer.
1699          * Therefore, we need to check a key size == 0 instead.
1700          * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1701          * when no key is present (only change flags), but older versions
1702          * don't do it. - Jean II */
1703         if (dwrq->length > 0) {
1704                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1705                 int current_index = priv->default_key;
1706                 /* Check the size of the key */
1707                 if (dwrq->length > 13) {
1708                         return -EINVAL;
1709                 }
1710                 /* Check the index (none -> use current) */
1711                 if (index < 0 || index >= 4)
1712                         index = current_index;
1713                 else
1714                         priv->default_key = index;
1715                 /* Set the length */
1716                 if (dwrq->length > 5)
1717                         priv->wep_key_len[index] = 13;
1718                 else
1719                         if (dwrq->length > 0)
1720                                 priv->wep_key_len[index] = 5;
1721                         else
1722                                 /* Disable the key */
1723                                 priv->wep_key_len[index] = 0;
1724                 /* Check if the key is not marked as invalid */
1725                 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1726                         /* Cleanup */
1727                         memset(priv->wep_keys[index], 0, 13);
1728                         /* Copy the key in the driver */
1729                         memcpy(priv->wep_keys[index], extra, dwrq->length);
1730                 }
1731                 /* WE specify that if a valid key is set, encryption
1732                  * should be enabled (user may turn it off later)
1733                  * This is also how "iwconfig ethX key on" works */
1734                 if (index == current_index &&
1735                     priv->wep_key_len[index] > 0) {
1736                         priv->wep_is_on = 1;
1737                         priv->exclude_unencrypted = 1;
1738                         if (priv->wep_key_len[index] > 5) {
1739                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1740                                 priv->encryption_level = 2;
1741                         } else {
1742                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1743                                 priv->encryption_level = 1;
1744                         }
1745                 }
1746         } else {
1747                 /* Do we want to just set the transmit key index ? */
1748                 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1749                 if (index >= 0 && index < 4) {
1750                         priv->default_key = index;
1751                 } else
1752                         /* Don't complain if only change the mode */
1753                         if (!(dwrq->flags & IW_ENCODE_MODE))
1754                                 return -EINVAL;
1755         }
1756         /* Read the flags */
1757         if (dwrq->flags & IW_ENCODE_DISABLED) {
1758                 priv->wep_is_on = 0;
1759                 priv->encryption_level = 0;
1760                 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1761         } else {
1762                 priv->wep_is_on = 1;
1763                 if (priv->wep_key_len[priv->default_key] > 5) {
1764                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1765                         priv->encryption_level = 2;
1766                 } else {
1767                         priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1768                         priv->encryption_level = 1;
1769                 }
1770         }
1771         if (dwrq->flags & IW_ENCODE_RESTRICTED)
1772                 priv->exclude_unencrypted = 1;
1773         if (dwrq->flags & IW_ENCODE_OPEN)
1774                 priv->exclude_unencrypted = 0;
1775
1776         return -EINPROGRESS;            /* Call commit handler */
1777 }
1778
1779 static int atmel_get_encode(struct net_device *dev,
1780                             struct iw_request_info *info,
1781                             struct iw_point *dwrq,
1782                             char *extra)
1783 {
1784         struct atmel_private *priv = netdev_priv(dev);
1785         int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1786
1787         if (!priv->wep_is_on)
1788                 dwrq->flags = IW_ENCODE_DISABLED;
1789         else {
1790                 if (priv->exclude_unencrypted)
1791                         dwrq->flags = IW_ENCODE_RESTRICTED;
1792                 else
1793                         dwrq->flags = IW_ENCODE_OPEN;
1794         }
1795                 /* Which key do we want ? -1 -> tx index */
1796         if (index < 0 || index >= 4)
1797                 index = priv->default_key;
1798         dwrq->flags |= index + 1;
1799         /* Copy the key to the user buffer */
1800         dwrq->length = priv->wep_key_len[index];
1801         if (dwrq->length > 16) {
1802                 dwrq->length = 0;
1803         } else {
1804                 memset(extra, 0, 16);
1805                 memcpy(extra, priv->wep_keys[index], dwrq->length);
1806         }
1807
1808         return 0;
1809 }
1810
1811 static int atmel_set_encodeext(struct net_device *dev,
1812                             struct iw_request_info *info,
1813                             union iwreq_data *wrqu,
1814                             char *extra)
1815 {
1816         struct atmel_private *priv = netdev_priv(dev);
1817         struct iw_point *encoding = &wrqu->encoding;
1818         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1819         int idx, key_len, alg = ext->alg, set_key = 1;
1820
1821         /* Determine and validate the key index */
1822         idx = encoding->flags & IW_ENCODE_INDEX;
1823         if (idx) {
1824                 if (idx < 1 || idx > 4)
1825                         return -EINVAL;
1826                 idx--;
1827         } else
1828                 idx = priv->default_key;
1829
1830         if (encoding->flags & IW_ENCODE_DISABLED)
1831             alg = IW_ENCODE_ALG_NONE;
1832
1833         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1834                 priv->default_key = idx;
1835                 set_key = ext->key_len > 0 ? 1 : 0;
1836         }
1837
1838         if (set_key) {
1839                 /* Set the requested key first */
1840                 switch (alg) {
1841                 case IW_ENCODE_ALG_NONE:
1842                         priv->wep_is_on = 0;
1843                         priv->encryption_level = 0;
1844                         priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1845                         break;
1846                 case IW_ENCODE_ALG_WEP:
1847                         if (ext->key_len > 5) {
1848                                 priv->wep_key_len[idx] = 13;
1849                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1850                                 priv->encryption_level = 2;
1851                         } else if (ext->key_len > 0) {
1852                                 priv->wep_key_len[idx] = 5;
1853                                 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1854                                 priv->encryption_level = 1;
1855                         } else {
1856                                 return -EINVAL;
1857                         }
1858                         priv->wep_is_on = 1;
1859                         memset(priv->wep_keys[idx], 0, 13);
1860                         key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1861                         memcpy(priv->wep_keys[idx], ext->key, key_len);
1862                         break;
1863                 default:
1864                         return -EINVAL;
1865                 }
1866         }
1867
1868         return -EINPROGRESS;
1869 }
1870
1871 static int atmel_get_encodeext(struct net_device *dev,
1872                             struct iw_request_info *info,
1873                             union iwreq_data *wrqu,
1874                             char *extra)
1875 {
1876         struct atmel_private *priv = netdev_priv(dev);
1877         struct iw_point *encoding = &wrqu->encoding;
1878         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1879         int idx, max_key_len;
1880
1881         max_key_len = encoding->length - sizeof(*ext);
1882         if (max_key_len < 0)
1883                 return -EINVAL;
1884
1885         idx = encoding->flags & IW_ENCODE_INDEX;
1886         if (idx) {
1887                 if (idx < 1 || idx > 4)
1888                         return -EINVAL;
1889                 idx--;
1890         } else
1891                 idx = priv->default_key;
1892
1893         encoding->flags = idx + 1;
1894         memset(ext, 0, sizeof(*ext));
1895
1896         if (!priv->wep_is_on) {
1897                 ext->alg = IW_ENCODE_ALG_NONE;
1898                 ext->key_len = 0;
1899                 encoding->flags |= IW_ENCODE_DISABLED;
1900         } else {
1901                 if (priv->encryption_level > 0)
1902                         ext->alg = IW_ENCODE_ALG_WEP;
1903                 else
1904                         return -EINVAL;
1905
1906                 ext->key_len = priv->wep_key_len[idx];
1907                 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1908                 encoding->flags |= IW_ENCODE_ENABLED;
1909         }
1910
1911         return 0;
1912 }
1913
1914 static int atmel_set_auth(struct net_device *dev,
1915                                struct iw_request_info *info,
1916                                union iwreq_data *wrqu, char *extra)
1917 {
1918         struct atmel_private *priv = netdev_priv(dev);
1919         struct iw_param *param = &wrqu->param;
1920
1921         switch (param->flags & IW_AUTH_INDEX) {
1922         case IW_AUTH_WPA_VERSION:
1923         case IW_AUTH_CIPHER_PAIRWISE:
1924         case IW_AUTH_CIPHER_GROUP:
1925         case IW_AUTH_KEY_MGMT:
1926         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1927         case IW_AUTH_PRIVACY_INVOKED:
1928                 /*
1929                  * atmel does not use these parameters
1930                  */
1931                 break;
1932
1933         case IW_AUTH_DROP_UNENCRYPTED:
1934                 priv->exclude_unencrypted = param->value ? 1 : 0;
1935                 break;
1936
1937         case IW_AUTH_80211_AUTH_ALG: {
1938                         if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1939                                 priv->exclude_unencrypted = 1;
1940                         } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1941                                 priv->exclude_unencrypted = 0;
1942                         } else
1943                                 return -EINVAL;
1944                         break;
1945                 }
1946
1947         case IW_AUTH_WPA_ENABLED:
1948                 /* Silently accept disable of WPA */
1949                 if (param->value > 0)
1950                         return -EOPNOTSUPP;
1951                 break;
1952
1953         default:
1954                 return -EOPNOTSUPP;
1955         }
1956         return -EINPROGRESS;
1957 }
1958
1959 static int atmel_get_auth(struct net_device *dev,
1960                                struct iw_request_info *info,
1961                                union iwreq_data *wrqu, char *extra)
1962 {
1963         struct atmel_private *priv = netdev_priv(dev);
1964         struct iw_param *param = &wrqu->param;
1965
1966         switch (param->flags & IW_AUTH_INDEX) {
1967         case IW_AUTH_DROP_UNENCRYPTED:
1968                 param->value = priv->exclude_unencrypted;
1969                 break;
1970
1971         case IW_AUTH_80211_AUTH_ALG:
1972                 if (priv->exclude_unencrypted == 1)
1973                         param->value = IW_AUTH_ALG_SHARED_KEY;
1974                 else
1975                         param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1976                 break;
1977
1978         case IW_AUTH_WPA_ENABLED:
1979                 param->value = 0;
1980                 break;
1981
1982         default:
1983                 return -EOPNOTSUPP;
1984         }
1985         return 0;
1986 }
1987
1988
1989 static int atmel_get_name(struct net_device *dev,
1990                           struct iw_request_info *info,
1991                           char *cwrq,
1992                           char *extra)
1993 {
1994         strcpy(cwrq, "IEEE 802.11-DS");
1995         return 0;
1996 }
1997
1998 static int atmel_set_rate(struct net_device *dev,
1999                           struct iw_request_info *info,
2000                           struct iw_param *vwrq,
2001                           char *extra)
2002 {
2003         struct atmel_private *priv = netdev_priv(dev);
2004
2005         if (vwrq->fixed == 0) {
2006                 priv->tx_rate = 3;
2007                 priv->auto_tx_rate = 1;
2008         } else {
2009                 priv->auto_tx_rate = 0;
2010
2011                 /* Which type of value ? */
2012                 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2013                         /* Setting by rate index */
2014                         priv->tx_rate = vwrq->value;
2015                 } else {
2016                 /* Setting by frequency value */
2017                         switch (vwrq->value) {
2018                         case  1000000:
2019                                 priv->tx_rate = 0;
2020                                 break;
2021                         case  2000000:
2022                                 priv->tx_rate = 1;
2023                                 break;
2024                         case  5500000:
2025                                 priv->tx_rate = 2;
2026                                 break;
2027                         case 11000000:
2028                                 priv->tx_rate = 3;
2029                                 break;
2030                         default:
2031                                 return -EINVAL;
2032                         }
2033                 }
2034         }
2035
2036         return -EINPROGRESS;
2037 }
2038
2039 static int atmel_set_mode(struct net_device *dev,
2040                           struct iw_request_info *info,
2041                           __u32 *uwrq,
2042                           char *extra)
2043 {
2044         struct atmel_private *priv = netdev_priv(dev);
2045
2046         if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2047                 return -EINVAL;
2048
2049         priv->operating_mode = *uwrq;
2050         return -EINPROGRESS;
2051 }
2052
2053 static int atmel_get_mode(struct net_device *dev,
2054                           struct iw_request_info *info,
2055                           __u32 *uwrq,
2056                           char *extra)
2057 {
2058         struct atmel_private *priv = netdev_priv(dev);
2059
2060         *uwrq = priv->operating_mode;
2061         return 0;
2062 }
2063
2064 static int atmel_get_rate(struct net_device *dev,
2065                          struct iw_request_info *info,
2066                          struct iw_param *vwrq,
2067                          char *extra)
2068 {
2069         struct atmel_private *priv = netdev_priv(dev);
2070
2071         if (priv->auto_tx_rate) {
2072                 vwrq->fixed = 0;
2073                 vwrq->value = 11000000;
2074         } else {
2075                 vwrq->fixed = 1;
2076                 switch (priv->tx_rate) {
2077                 case 0:
2078                         vwrq->value =  1000000;
2079                         break;
2080                 case 1:
2081                         vwrq->value =  2000000;
2082                         break;
2083                 case 2:
2084                         vwrq->value =  5500000;
2085                         break;
2086                 case 3:
2087                         vwrq->value = 11000000;
2088                         break;
2089                 }
2090         }
2091         return 0;
2092 }
2093
2094 static int atmel_set_power(struct net_device *dev,
2095                            struct iw_request_info *info,
2096                            struct iw_param *vwrq,
2097                            char *extra)
2098 {
2099         struct atmel_private *priv = netdev_priv(dev);
2100         priv->power_mode = vwrq->disabled ? 0 : 1;
2101         return -EINPROGRESS;
2102 }
2103
2104 static int atmel_get_power(struct net_device *dev,
2105                            struct iw_request_info *info,
2106                            struct iw_param *vwrq,
2107                            char *extra)
2108 {
2109         struct atmel_private *priv = netdev_priv(dev);
2110         vwrq->disabled = priv->power_mode ? 0 : 1;
2111         vwrq->flags = IW_POWER_ON;
2112         return 0;
2113 }
2114
2115 static int atmel_set_retry(struct net_device *dev,
2116                            struct iw_request_info *info,
2117                            struct iw_param *vwrq,
2118                            char *extra)
2119 {
2120         struct atmel_private *priv = netdev_priv(dev);
2121
2122         if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2123                 if (vwrq->flags & IW_RETRY_LONG)
2124                         priv->long_retry = vwrq->value;
2125                 else if (vwrq->flags & IW_RETRY_SHORT)
2126                         priv->short_retry = vwrq->value;
2127                 else {
2128                         /* No modifier : set both */
2129                         priv->long_retry = vwrq->value;
2130                         priv->short_retry = vwrq->value;
2131                 }
2132                 return -EINPROGRESS;
2133         }
2134
2135         return -EINVAL;
2136 }
2137
2138 static int atmel_get_retry(struct net_device *dev,
2139                            struct iw_request_info *info,
2140                            struct iw_param *vwrq,
2141                            char *extra)
2142 {
2143         struct atmel_private *priv = netdev_priv(dev);
2144
2145         vwrq->disabled = 0;      /* Can't be disabled */
2146
2147         /* Note : by default, display the short retry number */
2148         if (vwrq->flags & IW_RETRY_LONG) {
2149                 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2150                 vwrq->value = priv->long_retry;
2151         } else {
2152                 vwrq->flags = IW_RETRY_LIMIT;
2153                 vwrq->value = priv->short_retry;
2154                 if (priv->long_retry != priv->short_retry)
2155                         vwrq->flags |= IW_RETRY_SHORT;
2156         }
2157
2158         return 0;
2159 }
2160
2161 static int atmel_set_rts(struct net_device *dev,
2162                          struct iw_request_info *info,
2163                          struct iw_param *vwrq,
2164                          char *extra)
2165 {
2166         struct atmel_private *priv = netdev_priv(dev);
2167         int rthr = vwrq->value;
2168
2169         if (vwrq->disabled)
2170                 rthr = 2347;
2171         if ((rthr < 0) || (rthr > 2347)) {
2172                 return -EINVAL;
2173         }
2174         priv->rts_threshold = rthr;
2175
2176         return -EINPROGRESS;            /* Call commit handler */
2177 }
2178
2179 static int atmel_get_rts(struct net_device *dev,
2180                          struct iw_request_info *info,
2181                          struct iw_param *vwrq,
2182                          char *extra)
2183 {
2184         struct atmel_private *priv = netdev_priv(dev);
2185
2186         vwrq->value = priv->rts_threshold;
2187         vwrq->disabled = (vwrq->value >= 2347);
2188         vwrq->fixed = 1;
2189
2190         return 0;
2191 }
2192
2193 static int atmel_set_frag(struct net_device *dev,
2194                           struct iw_request_info *info,
2195                           struct iw_param *vwrq,
2196                           char *extra)
2197 {
2198         struct atmel_private *priv = netdev_priv(dev);
2199         int fthr = vwrq->value;
2200
2201         if (vwrq->disabled)
2202                 fthr = 2346;
2203         if ((fthr < 256) || (fthr > 2346)) {
2204                 return -EINVAL;
2205         }
2206         fthr &= ~0x1;   /* Get an even value - is it really needed ??? */
2207         priv->frag_threshold = fthr;
2208
2209         return -EINPROGRESS;            /* Call commit handler */
2210 }
2211
2212 static int atmel_get_frag(struct net_device *dev,
2213                           struct iw_request_info *info,
2214                           struct iw_param *vwrq,
2215                           char *extra)
2216 {
2217         struct atmel_private *priv = netdev_priv(dev);
2218
2219         vwrq->value = priv->frag_threshold;
2220         vwrq->disabled = (vwrq->value >= 2346);
2221         vwrq->fixed = 1;
2222
2223         return 0;
2224 }
2225
2226 static int atmel_set_freq(struct net_device *dev,
2227                           struct iw_request_info *info,
2228                           struct iw_freq *fwrq,
2229                           char *extra)
2230 {
2231         struct atmel_private *priv = netdev_priv(dev);
2232         int rc = -EINPROGRESS;          /* Call commit handler */
2233
2234         /* If setting by frequency, convert to a channel */
2235         if (fwrq->e == 1) {
2236                 int f = fwrq->m / 100000;
2237
2238                 /* Hack to fall through... */
2239                 fwrq->e = 0;
2240                 fwrq->m = ieee80211_frequency_to_channel(f);
2241         }
2242         /* Setting by channel number */
2243         if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2244                 rc = -EOPNOTSUPP;
2245         else {
2246                 int channel = fwrq->m;
2247                 if (atmel_validate_channel(priv, channel) == 0) {
2248                         priv->channel = channel;
2249                 } else {
2250                         rc = -EINVAL;
2251                 }
2252         }
2253         return rc;
2254 }
2255
2256 static int atmel_get_freq(struct net_device *dev,
2257                           struct iw_request_info *info,
2258                           struct iw_freq *fwrq,
2259                           char *extra)
2260 {
2261         struct atmel_private *priv = netdev_priv(dev);
2262
2263         fwrq->m = priv->channel;
2264         fwrq->e = 0;
2265         return 0;
2266 }
2267
2268 static int atmel_set_scan(struct net_device *dev,
2269                           struct iw_request_info *info,
2270                           struct iw_point *dwrq,
2271                           char *extra)
2272 {
2273         struct atmel_private *priv = netdev_priv(dev);
2274         unsigned long flags;
2275
2276         /* Note : you may have realised that, as this is a SET operation,
2277          * this is privileged and therefore a normal user can't
2278          * perform scanning.
2279          * This is not an error, while the device perform scanning,
2280          * traffic doesn't flow, so it's a perfect DoS...
2281          * Jean II */
2282
2283         if (priv->station_state == STATION_STATE_DOWN)
2284                 return -EAGAIN;
2285
2286         /* Timeout old surveys. */
2287         if (time_after(jiffies, priv->last_survey + 20 * HZ))
2288                 priv->site_survey_state = SITE_SURVEY_IDLE;
2289         priv->last_survey = jiffies;
2290
2291         /* Initiate a scan command */
2292         if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2293                 return -EBUSY;
2294
2295         del_timer_sync(&priv->management_timer);
2296         spin_lock_irqsave(&priv->irqlock, flags);
2297
2298         priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2299         priv->fast_scan = 0;
2300         atmel_scan(priv, 0);
2301         spin_unlock_irqrestore(&priv->irqlock, flags);
2302
2303         return 0;
2304 }
2305
2306 static int atmel_get_scan(struct net_device *dev,
2307                           struct iw_request_info *info,
2308                           struct iw_point *dwrq,
2309                           char *extra)
2310 {
2311         struct atmel_private *priv = netdev_priv(dev);
2312         int i;
2313         char *current_ev = extra;
2314         struct iw_event iwe;
2315
2316         if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2317                 return -EAGAIN;
2318
2319         for (i = 0; i < priv->BSS_list_entries; i++) {
2320                 iwe.cmd = SIOCGIWAP;
2321                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2322                 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2323                 current_ev = iwe_stream_add_event(info, current_ev,
2324                                                   extra + IW_SCAN_MAX_DATA,
2325                                                   &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(info, current_ev,
2333                                                   extra + IW_SCAN_MAX_DATA,
2334                                                   &iwe, priv->BSSinfo[i].SSID);
2335
2336                 iwe.cmd = SIOCGIWMODE;
2337                 iwe.u.mode = priv->BSSinfo[i].BSStype;
2338                 current_ev = iwe_stream_add_event(info, current_ev,
2339                                                   extra + IW_SCAN_MAX_DATA,
2340                                                   &iwe, IW_EV_UINT_LEN);
2341
2342                 iwe.cmd = SIOCGIWFREQ;
2343                 iwe.u.freq.m = priv->BSSinfo[i].channel;
2344                 iwe.u.freq.e = 0;
2345                 current_ev = iwe_stream_add_event(info, current_ev,
2346                                                   extra + IW_SCAN_MAX_DATA,
2347                                                   &iwe, IW_EV_FREQ_LEN);
2348
2349                 /* Add quality statistics */
2350                 iwe.cmd = IWEVQUAL;
2351                 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2352                 iwe.u.qual.qual  = iwe.u.qual.level;
2353                 /* iwe.u.qual.noise  = SOMETHING */
2354                 current_ev = iwe_stream_add_event(info, current_ev,
2355                                                   extra + IW_SCAN_MAX_DATA,
2356                                                   &iwe, IW_EV_QUAL_LEN);
2357
2358
2359                 iwe.cmd = SIOCGIWENCODE;
2360                 if (priv->BSSinfo[i].UsingWEP)
2361                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2362                 else
2363                         iwe.u.data.flags = IW_ENCODE_DISABLED;
2364                 iwe.u.data.length = 0;
2365                 current_ev = iwe_stream_add_point(info, current_ev,
2366                                                   extra + IW_SCAN_MAX_DATA,
2367                                                   &iwe, NULL);
2368         }
2369
2370         /* Length of data */
2371         dwrq->length = (current_ev - extra);
2372         dwrq->flags = 0;
2373
2374         return 0;
2375 }
2376
2377 static int atmel_get_range(struct net_device *dev,
2378                            struct iw_request_info *info,
2379                            struct iw_point *dwrq,
2380                            char *extra)
2381 {
2382         struct atmel_private *priv = netdev_priv(dev);
2383         struct iw_range *range = (struct iw_range *) extra;
2384         int k, i, j;
2385
2386         dwrq->length = sizeof(struct iw_range);
2387         memset(range, 0, sizeof(struct iw_range));
2388         range->min_nwid = 0x0000;
2389         range->max_nwid = 0x0000;
2390         range->num_channels = 0;
2391         for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2392                 if (priv->reg_domain == channel_table[j].reg_domain) {
2393                         range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2394                         break;
2395                 }
2396         if (range->num_channels != 0) {
2397                 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2398                         range->freq[k].i = i; /* List index */
2399
2400                         /* Values in MHz -> * 10^5 * 10 */
2401                         range->freq[k].m = 100000 *
2402                          ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2403                         range->freq[k++].e = 1;
2404                 }
2405                 range->num_frequency = k;
2406         }
2407
2408         range->max_qual.qual = 100;
2409         range->max_qual.level = 100;
2410         range->max_qual.noise = 0;
2411         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2412
2413         range->avg_qual.qual = 50;
2414         range->avg_qual.level = 50;
2415         range->avg_qual.noise = 0;
2416         range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2417
2418         range->sensitivity = 0;
2419
2420         range->bitrate[0] =  1000000;
2421         range->bitrate[1] =  2000000;
2422         range->bitrate[2] =  5500000;
2423         range->bitrate[3] = 11000000;
2424         range->num_bitrates = 4;
2425
2426         range->min_rts = 0;
2427         range->max_rts = 2347;
2428         range->min_frag = 256;
2429         range->max_frag = 2346;
2430
2431         range->encoding_size[0] = 5;
2432         range->encoding_size[1] = 13;
2433         range->num_encoding_sizes = 2;
2434         range->max_encoding_tokens = 4;
2435
2436         range->pmp_flags = IW_POWER_ON;
2437         range->pmt_flags = IW_POWER_ON;
2438         range->pm_capa = 0;
2439
2440         range->we_version_source = WIRELESS_EXT;
2441         range->we_version_compiled = WIRELESS_EXT;
2442         range->retry_capa = IW_RETRY_LIMIT ;
2443         range->retry_flags = IW_RETRY_LIMIT;
2444         range->r_time_flags = 0;
2445         range->min_retry = 1;
2446         range->max_retry = 65535;
2447
2448         return 0;
2449 }
2450
2451 static int atmel_set_wap(struct net_device *dev,
2452                          struct iw_request_info *info,
2453                          struct sockaddr *awrq,
2454                          char *extra)
2455 {
2456         struct atmel_private *priv = netdev_priv(dev);
2457         int i;
2458         static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2459         static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2460         unsigned long flags;
2461
2462         if (awrq->sa_family != ARPHRD_ETHER)
2463                 return -EINVAL;
2464
2465         if (!memcmp(any, awrq->sa_data, 6) ||
2466             !memcmp(off, awrq->sa_data, 6)) {
2467                 del_timer_sync(&priv->management_timer);
2468                 spin_lock_irqsave(&priv->irqlock, flags);
2469                 atmel_scan(priv, 1);
2470                 spin_unlock_irqrestore(&priv->irqlock, flags);
2471                 return 0;
2472         }
2473
2474         for (i = 0; i < priv->BSS_list_entries; i++) {
2475                 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2476                         if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2477                                 return -EINVAL;
2478                         } else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2479                                 return -EINVAL;
2480                         } else {
2481                                 del_timer_sync(&priv->management_timer);
2482                                 spin_lock_irqsave(&priv->irqlock, flags);
2483                                 atmel_join_bss(priv, i);
2484                                 spin_unlock_irqrestore(&priv->irqlock, flags);
2485                                 return 0;
2486                         }
2487                 }
2488         }
2489
2490         return -EINVAL;
2491 }
2492
2493 static int atmel_config_commit(struct net_device *dev,
2494                                struct iw_request_info *info,    /* NULL */
2495                                void *zwrq,                      /* NULL */
2496                                char *extra)                     /* NULL */
2497 {
2498         return atmel_open(dev);
2499 }
2500
2501 static const iw_handler atmel_handler[] =
2502 {
2503         (iw_handler) atmel_config_commit,       /* SIOCSIWCOMMIT */
2504         (iw_handler) atmel_get_name,            /* SIOCGIWNAME */
2505         (iw_handler) NULL,                      /* SIOCSIWNWID */
2506         (iw_handler) NULL,                      /* SIOCGIWNWID */
2507         (iw_handler) atmel_set_freq,            /* SIOCSIWFREQ */
2508         (iw_handler) atmel_get_freq,            /* SIOCGIWFREQ */
2509         (iw_handler) atmel_set_mode,            /* SIOCSIWMODE */
2510         (iw_handler) atmel_get_mode,            /* SIOCGIWMODE */
2511         (iw_handler) NULL,                      /* SIOCSIWSENS */
2512         (iw_handler) NULL,                      /* SIOCGIWSENS */
2513         (iw_handler) NULL,                      /* SIOCSIWRANGE */
2514         (iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
2515         (iw_handler) NULL,                      /* SIOCSIWPRIV */
2516         (iw_handler) NULL,                      /* SIOCGIWPRIV */
2517         (iw_handler) NULL,                      /* SIOCSIWSTATS */
2518         (iw_handler) NULL,                      /* SIOCGIWSTATS */
2519         (iw_handler) NULL,                      /* SIOCSIWSPY */
2520         (iw_handler) NULL,                      /* SIOCGIWSPY */
2521         (iw_handler) NULL,                      /* -- hole -- */
2522         (iw_handler) NULL,                      /* -- hole -- */
2523         (iw_handler) atmel_set_wap,             /* SIOCSIWAP */
2524         (iw_handler) atmel_get_wap,             /* SIOCGIWAP */
2525         (iw_handler) NULL,                      /* -- hole -- */
2526         (iw_handler) NULL,                      /* SIOCGIWAPLIST */
2527         (iw_handler) atmel_set_scan,            /* SIOCSIWSCAN */
2528         (iw_handler) atmel_get_scan,            /* SIOCGIWSCAN */
2529         (iw_handler) atmel_set_essid,           /* SIOCSIWESSID */
2530         (iw_handler) atmel_get_essid,           /* SIOCGIWESSID */
2531         (iw_handler) NULL,                      /* SIOCSIWNICKN */
2532         (iw_handler) NULL,                      /* SIOCGIWNICKN */
2533         (iw_handler) NULL,                      /* -- hole -- */
2534         (iw_handler) NULL,                      /* -- hole -- */
2535         (iw_handler) atmel_set_rate,            /* SIOCSIWRATE */
2536         (iw_handler) atmel_get_rate,            /* SIOCGIWRATE */
2537         (iw_handler) atmel_set_rts,             /* SIOCSIWRTS */
2538         (iw_handler) atmel_get_rts,             /* SIOCGIWRTS */
2539         (iw_handler) atmel_set_frag,            /* SIOCSIWFRAG */
2540         (iw_handler) atmel_get_frag,            /* SIOCGIWFRAG */
2541         (iw_handler) NULL,                      /* SIOCSIWTXPOW */
2542         (iw_handler) NULL,                      /* SIOCGIWTXPOW */
2543         (iw_handler) atmel_set_retry,           /* SIOCSIWRETRY */
2544         (iw_handler) atmel_get_retry,           /* SIOCGIWRETRY */
2545         (iw_handler) atmel_set_encode,          /* SIOCSIWENCODE */
2546         (iw_handler) atmel_get_encode,          /* SIOCGIWENCODE */
2547         (iw_handler) atmel_set_power,           /* SIOCSIWPOWER */
2548         (iw_handler) atmel_get_power,           /* SIOCGIWPOWER */
2549         (iw_handler) NULL,                      /* -- hole -- */
2550         (iw_handler) NULL,                      /* -- hole -- */
2551         (iw_handler) NULL,                      /* SIOCSIWGENIE */
2552         (iw_handler) NULL,                      /* SIOCGIWGENIE */
2553         (iw_handler) atmel_set_auth,            /* SIOCSIWAUTH */
2554         (iw_handler) atmel_get_auth,            /* SIOCGIWAUTH */
2555         (iw_handler) atmel_set_encodeext,       /* SIOCSIWENCODEEXT */
2556         (iw_handler) atmel_get_encodeext,       /* SIOCGIWENCODEEXT */
2557         (iw_handler) NULL,                      /* SIOCSIWPMKSA */
2558 };
2559
2560 static const iw_handler atmel_private_handler[] =
2561 {
2562         NULL,                           /* SIOCIWFIRSTPRIV */
2563 };
2564
2565 struct atmel_priv_ioctl {
2566         char id[32];
2567         unsigned char __user *data;
2568         unsigned short len;
2569 };
2570
2571 #define ATMELFWL        SIOCIWFIRSTPRIV
2572 #define ATMELIDIFC      ATMELFWL + 1
2573 #define ATMELRD         ATMELFWL + 2
2574 #define ATMELMAGIC 0x51807
2575 #define REGDOMAINSZ 20
2576
2577 static const struct iw_priv_args atmel_private_args[] = {
2578         {
2579                 .cmd = ATMELFWL,
2580                 .set_args = IW_PRIV_TYPE_BYTE
2581                                 | IW_PRIV_SIZE_FIXED
2582                                 | sizeof(struct atmel_priv_ioctl),
2583                 .get_args = IW_PRIV_TYPE_NONE,
2584                 .name = "atmelfwl"
2585         }, {
2586                 .cmd = ATMELIDIFC,
2587                 .set_args = IW_PRIV_TYPE_NONE,
2588                 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2589                 .name = "atmelidifc"
2590         }, {
2591                 .cmd = ATMELRD,
2592                 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2593                 .get_args = IW_PRIV_TYPE_NONE,
2594                 .name = "regdomain"
2595         },
2596 };
2597
2598 static const struct iw_handler_def atmel_handler_def = {
2599         .num_standard   = ARRAY_SIZE(atmel_handler),
2600         .num_private    = ARRAY_SIZE(atmel_private_handler),
2601         .num_private_args = ARRAY_SIZE(atmel_private_args),
2602         .standard       = (iw_handler *) atmel_handler,
2603         .private        = (iw_handler *) atmel_private_handler,
2604         .private_args   = (struct iw_priv_args *) atmel_private_args,
2605         .get_wireless_stats = atmel_get_wireless_stats
2606 };
2607
2608 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2609 {
2610         int i, rc = 0;
2611         struct atmel_private *priv = netdev_priv(dev);
2612         struct atmel_priv_ioctl com;
2613         struct iwreq *wrq = (struct iwreq *) rq;
2614         unsigned char *new_firmware;
2615         char domain[REGDOMAINSZ + 1];
2616
2617         switch (cmd) {
2618         case ATMELIDIFC:
2619                 wrq->u.param.value = ATMELMAGIC;
2620                 break;
2621
2622         case ATMELFWL:
2623                 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2624                         rc = -EFAULT;
2625                         break;
2626                 }
2627
2628                 if (!capable(CAP_NET_ADMIN)) {
2629                         rc = -EPERM;
2630                         break;
2631                 }
2632
2633                 new_firmware = memdup_user(com.data, com.len);
2634                 if (IS_ERR(new_firmware)) {
2635                         rc = PTR_ERR(new_firmware);
2636                         break;
2637                 }
2638
2639                 kfree(priv->firmware);
2640
2641                 priv->firmware = new_firmware;
2642                 priv->firmware_length = com.len;
2643                 strncpy(priv->firmware_id, com.id, 31);
2644                 priv->firmware_id[31] = '\0';
2645                 break;
2646
2647         case ATMELRD:
2648                 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2649                         rc = -EFAULT;
2650                         break;
2651                 }
2652
2653                 if (!capable(CAP_NET_ADMIN)) {
2654                         rc = -EPERM;
2655                         break;
2656                 }
2657
2658                 domain[REGDOMAINSZ] = 0;
2659                 rc = -EINVAL;
2660                 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2661                         if (!strcasecmp(channel_table[i].name, domain)) {
2662                                 priv->config_reg_domain = channel_table[i].reg_domain;
2663                                 rc = 0;
2664                         }
2665                 }
2666
2667                 if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
2668                         rc = atmel_open(dev);
2669                 break;
2670
2671         default:
2672                 rc = -EOPNOTSUPP;
2673         }
2674
2675         return rc;
2676 }
2677
2678 struct auth_body {
2679         __le16 alg;
2680         __le16 trans_seq;
2681         __le16 status;
2682         u8 el_id;
2683         u8 chall_text_len;
2684         u8 chall_text[253];
2685 };
2686
2687 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2688 {
2689         int old_state = priv->station_state;
2690
2691         if (new_state == old_state)
2692                 return;
2693
2694         priv->station_state = new_state;
2695
2696         if (new_state == STATION_STATE_READY) {
2697                 netif_start_queue(priv->dev);
2698                 netif_carrier_on(priv->dev);
2699         }
2700
2701         if (old_state == STATION_STATE_READY) {
2702                 netif_carrier_off(priv->dev);
2703                 if (netif_running(priv->dev))
2704                         netif_stop_queue(priv->dev);
2705                 priv->last_beacon_timestamp = 0;
2706         }
2707 }
2708
2709 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2710 {
2711         struct {
2712                 u8 BSSID[ETH_ALEN];
2713                 u8 SSID[MAX_SSID_LENGTH];
2714                 u8 scan_type;
2715                 u8 channel;
2716                 __le16 BSS_type;
2717                 __le16 min_channel_time;
2718                 __le16 max_channel_time;
2719                 u8 options;
2720                 u8 SSID_size;
2721         } cmd;
2722
2723         eth_broadcast_addr(cmd.BSSID);
2724
2725         if (priv->fast_scan) {
2726                 cmd.SSID_size = priv->SSID_size;
2727                 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2728                 cmd.min_channel_time = cpu_to_le16(10);
2729                 cmd.max_channel_time = cpu_to_le16(50);
2730         } else {
2731                 priv->BSS_list_entries = 0;
2732                 cmd.SSID_size = 0;
2733                 cmd.min_channel_time = cpu_to_le16(10);
2734                 cmd.max_channel_time = cpu_to_le16(120);
2735         }
2736
2737         cmd.options = 0;
2738
2739         if (!specific_ssid)
2740                 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2741
2742         cmd.channel = (priv->channel & 0x7f);
2743         cmd.scan_type = SCAN_TYPE_ACTIVE;
2744         cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2745                 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2746
2747         atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2748
2749         /* This must come after all hardware access to avoid being messed up
2750            by stuff happening in interrupt context after we leave STATE_DOWN */
2751         atmel_enter_state(priv, STATION_STATE_SCANNING);
2752 }
2753
2754 static void join(struct atmel_private *priv, int type)
2755 {
2756         struct {
2757                 u8 BSSID[6];
2758                 u8 SSID[MAX_SSID_LENGTH];
2759                 u8 BSS_type; /* this is a short in a scan command - weird */
2760                 u8 channel;
2761                 __le16 timeout;
2762                 u8 SSID_size;
2763                 u8 reserved;
2764         } cmd;
2765
2766         cmd.SSID_size = priv->SSID_size;
2767         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2768         memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2769         cmd.channel = (priv->channel & 0x7f);
2770         cmd.BSS_type = type;
2771         cmd.timeout = cpu_to_le16(2000);
2772
2773         atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2774 }
2775
2776 static void start(struct atmel_private *priv, int type)
2777 {
2778         struct {
2779                 u8 BSSID[6];
2780                 u8 SSID[MAX_SSID_LENGTH];
2781                 u8 BSS_type;
2782                 u8 channel;
2783                 u8 SSID_size;
2784                 u8 reserved[3];
2785         } cmd;
2786
2787         cmd.SSID_size = priv->SSID_size;
2788         memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2789         memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2790         cmd.BSS_type = type;
2791         cmd.channel = (priv->channel & 0x7f);
2792
2793         atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2794 }
2795
2796 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2797                                 u8 channel)
2798 {
2799         int rejoin = 0;
2800         int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2801                 SHORT_PREAMBLE : LONG_PREAMBLE;
2802
2803         if (priv->preamble != new) {
2804                 priv->preamble = new;
2805                 rejoin = 1;
2806                 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2807         }
2808
2809         if (priv->channel != channel) {
2810                 priv->channel = channel;
2811                 rejoin = 1;
2812                 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2813         }
2814
2815         if (rejoin) {
2816                 priv->station_is_associated = 0;
2817                 atmel_enter_state(priv, STATION_STATE_JOINNING);
2818
2819                 if (priv->operating_mode == IW_MODE_INFRA)
2820                         join(priv, BSS_TYPE_INFRASTRUCTURE);
2821                 else
2822                         join(priv, BSS_TYPE_AD_HOC);
2823         }
2824 }
2825
2826 static void send_authentication_request(struct atmel_private *priv, u16 system,
2827                                         u8 *challenge, int challenge_len)
2828 {
2829         struct ieee80211_hdr header;
2830         struct auth_body auth;
2831
2832         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2833         header.duration_id = cpu_to_le16(0x8000);
2834         header.seq_ctrl = 0;
2835         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2836         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2837         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2838
2839         if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2840                 /* no WEP for authentication frames with TrSeqNo 1 */
2841                 header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2842
2843         auth.alg = cpu_to_le16(system);
2844
2845         auth.status = 0;
2846         auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2847         priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2848         priv->CurrentAuthentTransactionSeqNum += 2;
2849
2850         if (challenge_len != 0) {
2851                 auth.el_id = 16; /* challenge_text */
2852                 auth.chall_text_len = challenge_len;
2853                 memcpy(auth.chall_text, challenge, challenge_len);
2854                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2855         } else {
2856                 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2857         }
2858 }
2859
2860 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2861 {
2862         u8 *ssid_el_p;
2863         int bodysize;
2864         struct ieee80211_hdr header;
2865         struct ass_req_format {
2866                 __le16 capability;
2867                 __le16 listen_interval;
2868                 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2869                 u8 ssid_el_id;
2870                 u8 ssid_len;
2871                 u8 ssid[MAX_SSID_LENGTH];
2872                 u8 sup_rates_el_id;
2873                 u8 sup_rates_len;
2874                 u8 rates[4];
2875         } body;
2876
2877         header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2878                 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2879         header.duration_id = cpu_to_le16(0x8000);
2880         header.seq_ctrl = 0;
2881
2882         memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2883         memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2884         memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2885
2886         body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2887         if (priv->wep_is_on)
2888                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2889         if (priv->preamble == SHORT_PREAMBLE)
2890                 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2891
2892         body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2893
2894         /* current AP address - only in reassoc frame */
2895         if (is_reassoc) {
2896                 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2897                 ssid_el_p = &body.ssid_el_id;
2898                 bodysize = 18 + priv->SSID_size;
2899         } else {
2900                 ssid_el_p = &body.ap[0];
2901                 bodysize = 12 + priv->SSID_size;
2902         }
2903
2904         ssid_el_p[0] = WLAN_EID_SSID;
2905         ssid_el_p[1] = priv->SSID_size;
2906         memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2907         ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2908         ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2909         memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2910
2911         atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2912 }
2913
2914 static int is_frame_from_current_bss(struct atmel_private *priv,
2915                                      struct ieee80211_hdr *header)
2916 {
2917         if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2918                 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2919         else
2920                 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2921 }
2922
2923 static int retrieve_bss(struct atmel_private *priv)
2924 {
2925         int i;
2926         int max_rssi = -128;
2927         int max_index = -1;
2928
2929         if (priv->BSS_list_entries == 0)
2930                 return -1;
2931
2932         if (priv->connect_to_any_BSS) {
2933                 /* Select a BSS with the max-RSSI but of the same type and of
2934                    the same WEP mode and that it is not marked as 'bad' (i.e.
2935                    we had previously failed to connect to this BSS with the
2936                    settings that we currently use) */
2937                 priv->current_BSS = 0;
2938                 for (i = 0; i < priv->BSS_list_entries; i++) {
2939                         if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2940                             ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2941                              (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2942                             !(priv->BSSinfo[i].channel & 0x80)) {
2943                                 max_rssi = priv->BSSinfo[i].RSSI;
2944                                 priv->current_BSS = max_index = i;
2945                         }
2946                 }
2947                 return max_index;
2948         }
2949
2950         for (i = 0; i < priv->BSS_list_entries; i++) {
2951                 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2952                     memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2953                     priv->operating_mode == priv->BSSinfo[i].BSStype &&
2954                     atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2955                         if (priv->BSSinfo[i].RSSI >= max_rssi) {
2956                                 max_rssi = priv->BSSinfo[i].RSSI;
2957                                 max_index = i;
2958                         }
2959                 }
2960         }
2961         return max_index;
2962 }
2963
2964 static void store_bss_info(struct atmel_private *priv,
2965                            struct ieee80211_hdr *header, u16 capability,
2966                            u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2967                            u8 *ssid, int is_beacon)
2968 {
2969         u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2970         int i, index;
2971
2972         for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2973                 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
2974                         index = i;
2975
2976         /* If we process a probe and an entry from this BSS exists
2977            we will update the BSS entry with the info from this BSS.
2978            If we process a beacon we will only update RSSI */
2979
2980         if (index == -1) {
2981                 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2982                         return;
2983                 index = priv->BSS_list_entries++;
2984                 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
2985                 priv->BSSinfo[index].RSSI = rssi;
2986         } else {
2987                 if (rssi > priv->BSSinfo[index].RSSI)
2988                         priv->BSSinfo[index].RSSI = rssi;
2989                 if (is_beacon)
2990                         return;
2991         }
2992
2993         priv->BSSinfo[index].channel = channel;
2994         priv->BSSinfo[index].beacon_period = beacon_period;
2995         priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
2996         memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2997         priv->BSSinfo[index].SSIDsize = ssid_len;
2998
2999         if (capability & WLAN_CAPABILITY_IBSS)
3000                 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3001         else if (capability & WLAN_CAPABILITY_ESS)
3002                 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3003
3004         priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3005                 SHORT_PREAMBLE : LONG_PREAMBLE;
3006 }
3007
3008 static void authenticate(struct atmel_private *priv, u16 frame_len)
3009 {
3010         struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3011         u16 status = le16_to_cpu(auth->status);
3012         u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3013         u16 system = le16_to_cpu(auth->alg);
3014
3015         if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3016                 /* no WEP */
3017                 if (priv->station_was_associated) {
3018                         atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3019                         send_association_request(priv, 1);
3020                         return;
3021                 } else {
3022                         atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3023                         send_association_request(priv, 0);
3024                         return;
3025                 }
3026         }
3027
3028         if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3029                 int should_associate = 0;
3030                 /* WEP */
3031                 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3032                         return;
3033
3034                 if (system == WLAN_AUTH_OPEN) {
3035                         if (trans_seq_no == 0x0002) {
3036                                 should_associate = 1;
3037                         }
3038                 } else if (system == WLAN_AUTH_SHARED_KEY) {
3039                         if (trans_seq_no == 0x0002 &&
3040                             auth->el_id == WLAN_EID_CHALLENGE) {
3041                                 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3042                                 return;
3043                         } else if (trans_seq_no == 0x0004) {
3044                                 should_associate = 1;
3045                         }
3046                 }
3047
3048                 if (should_associate) {
3049                         if (priv->station_was_associated) {
3050                                 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3051                                 send_association_request(priv, 1);
3052                                 return;
3053                         } else {
3054                                 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3055                                 send_association_request(priv, 0);
3056                                 return;
3057                         }
3058                 }
3059         }
3060
3061         if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3062                 /* Flip back and forth between WEP auth modes until the max
3063                  * authentication tries has been exceeded.
3064                  */
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 (system == WLAN_AUTH_SHARED_KEY
3071                            && priv->wep_is_on) {
3072                         priv->CurrentAuthentTransactionSeqNum = 0x001;
3073                         priv->exclude_unencrypted = 0;
3074                         send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3075                         return;
3076                 } else if (priv->connect_to_any_BSS) {
3077                         int bss_index;
3078
3079                         priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3080
3081                         if ((bss_index  = retrieve_bss(priv)) != -1) {
3082                                 atmel_join_bss(priv, bss_index);
3083                                 return;
3084                         }
3085                 }
3086         }
3087
3088         priv->AuthenticationRequestRetryCnt = 0;
3089         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3090         priv->station_is_associated = 0;
3091 }
3092
3093 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3094 {
3095         struct ass_resp_format {
3096                 __le16 capability;
3097                 __le16 status;
3098                 __le16 ass_id;
3099                 u8 el_id;
3100                 u8 length;
3101                 u8 rates[4];
3102         } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3103
3104         u16 status = le16_to_cpu(ass_resp->status);
3105         u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3106         u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3107
3108         union iwreq_data wrqu;
3109
3110         if (frame_len < 8 + rates_len)
3111                 return;
3112
3113         if (status == WLAN_STATUS_SUCCESS) {
3114                 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3115                         priv->AssociationRequestRetryCnt = 0;
3116                 else
3117                         priv->ReAssociationRequestRetryCnt = 0;
3118
3119                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3120                                 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3121                 atmel_set_mib(priv, Phy_Mib_Type,
3122                               PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3123                 if (priv->power_mode == 0) {
3124                         priv->listen_interval = 1;
3125                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3126                                        MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3127                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3128                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3129                 } else {
3130                         priv->listen_interval = 2;
3131                         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3132                                        MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
3133                         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3134                                         MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3135                 }
3136
3137                 priv->station_is_associated = 1;
3138                 priv->station_was_associated = 1;
3139                 atmel_enter_state(priv, STATION_STATE_READY);
3140
3141                 /* Send association event to userspace */
3142                 wrqu.data.length = 0;
3143                 wrqu.data.flags = 0;
3144                 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3145                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3146                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3147
3148                 return;
3149         }
3150
3151         if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3152             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3153             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3154             priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3155                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3156                 priv->AssociationRequestRetryCnt++;
3157                 send_association_request(priv, 0);
3158                 return;
3159         }
3160
3161         if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3162             status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3163             status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3164             priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3165                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3166                 priv->ReAssociationRequestRetryCnt++;
3167                 send_association_request(priv, 1);
3168                 return;
3169         }
3170
3171         atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
3172         priv->station_is_associated = 0;
3173
3174         if (priv->connect_to_any_BSS) {
3175                 int bss_index;
3176                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3177
3178                 if ((bss_index = retrieve_bss(priv)) != -1)
3179                         atmel_join_bss(priv, bss_index);
3180         }
3181 }
3182
3183 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3184 {
3185         struct bss_info *bss =  &priv->BSSinfo[bss_index];
3186
3187         memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3188         memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3189
3190         /* The WPA stuff cares about the current AP address */
3191         if (priv->use_wpa)
3192                 build_wpa_mib(priv);
3193
3194         /* When switching to AdHoc turn OFF Power Save if needed */
3195
3196         if (bss->BSStype == IW_MODE_ADHOC &&
3197             priv->operating_mode != IW_MODE_ADHOC &&
3198             priv->power_mode) {
3199                 priv->power_mode = 0;
3200                 priv->listen_interval = 1;
3201                 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3202                                MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
3203                 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3204                                 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3205         }
3206
3207         priv->operating_mode = bss->BSStype;
3208         priv->channel = bss->channel & 0x7f;
3209         priv->beacon_period = bss->beacon_period;
3210
3211         if (priv->preamble != bss->preamble) {
3212                 priv->preamble = bss->preamble;
3213                 atmel_set_mib8(priv, Local_Mib_Type,
3214                                LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
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         if (priv->wep_is_on && !bss->UsingWEP) {
3224                 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3225                 priv->station_is_associated = 0;
3226                 return;
3227         }
3228
3229         atmel_enter_state(priv, STATION_STATE_JOINNING);
3230
3231         if (priv->operating_mode == IW_MODE_INFRA)
3232                 join(priv, BSS_TYPE_INFRASTRUCTURE);
3233         else
3234                 join(priv, BSS_TYPE_AD_HOC);
3235 }
3236
3237 static void restart_search(struct atmel_private *priv)
3238 {
3239         int bss_index;
3240
3241         if (!priv->connect_to_any_BSS) {
3242                 atmel_scan(priv, 1);
3243         } else {
3244                 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3245
3246                 if ((bss_index = retrieve_bss(priv)) != -1)
3247                         atmel_join_bss(priv, bss_index);
3248                 else
3249                         atmel_scan(priv, 0);
3250         }
3251 }
3252
3253 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3254 {
3255         u8 old = priv->wstats.qual.level;
3256         u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3257
3258         switch (priv->firmware_type) {
3259         case ATMEL_FW_TYPE_502E:
3260                 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3261                 break;
3262         default:
3263                 break;
3264         }
3265
3266         rssi = rssi * 100 / max_rssi;
3267         if ((rssi + old) % 2)
3268                 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3269         else
3270                 priv->wstats.qual.level = (rssi + old) / 2;
3271         priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3272         priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3273 }
3274
3275 static void atmel_smooth_qual(struct atmel_private *priv)
3276 {
3277         unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3278         while (time_diff--) {
3279                 priv->last_qual += HZ;
3280                 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3281                 priv->wstats.qual.qual +=
3282                         priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3283                 priv->beacons_this_sec = 0;
3284         }
3285         priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3286         priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3287 }
3288
3289 /* deals with incoming management frames. */
3290 static void atmel_management_frame(struct atmel_private *priv,
3291                                    struct ieee80211_hdr *header,
3292                                    u16 frame_len, u8 rssi)
3293 {
3294         u16 subtype;
3295
3296         subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3297         switch (subtype) {
3298         case IEEE80211_STYPE_BEACON:
3299         case IEEE80211_STYPE_PROBE_RESP:
3300
3301                 /* beacon frame has multiple variable-length fields -
3302                    never let an engineer loose with a data structure design. */
3303                 {
3304                         struct beacon_format {
3305                                 __le64 timestamp;
3306                                 __le16 interval;
3307                                 __le16 capability;
3308                                 u8 ssid_el_id;
3309                                 u8 ssid_length;
3310                                 /* ssid here */
3311                                 u8 rates_el_id;
3312                                 u8 rates_length;
3313                                 /* rates here */
3314                                 u8 ds_el_id;
3315                                 u8 ds_length;
3316                                 /* ds here */
3317                         } *beacon = (struct beacon_format *)priv->rx_buf;
3318
3319                         u8 channel, rates_length, ssid_length;
3320                         u64 timestamp = le64_to_cpu(beacon->timestamp);
3321                         u16 beacon_interval = le16_to_cpu(beacon->interval);
3322                         u16 capability = le16_to_cpu(beacon->capability);
3323                         u8 *beaconp = priv->rx_buf;
3324                         ssid_length = beacon->ssid_length;
3325                         /* this blows chunks. */
3326                         if (frame_len < 14 || frame_len < ssid_length + 15)
3327                                 return;
3328                         rates_length = beaconp[beacon->ssid_length + 15];
3329                         if (frame_len < ssid_length + rates_length + 18)
3330                                 return;
3331                         if (ssid_length >  MAX_SSID_LENGTH)
3332                                 return;
3333                         channel = beaconp[ssid_length + rates_length + 18];
3334
3335                         if (priv->station_state == STATION_STATE_READY) {
3336                                 smooth_rssi(priv, rssi);
3337                                 if (is_frame_from_current_bss(priv, header)) {
3338                                         priv->beacons_this_sec++;
3339                                         atmel_smooth_qual(priv);
3340                                         if (priv->last_beacon_timestamp) {
3341                                                 /* Note truncate this to 32 bits - kernel can't divide a long long */
3342                                                 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3343                                                 int beacons = beacon_delay / (beacon_interval * 1000);
3344                                                 if (beacons > 1)
3345                                                         priv->wstats.miss.beacon += beacons - 1;
3346                                         }
3347                                         priv->last_beacon_timestamp = timestamp;
3348                                         handle_beacon_probe(priv, capability, channel);
3349                                 }
3350                         }
3351
3352                         if (priv->station_state == STATION_STATE_SCANNING)
3353                                 store_bss_info(priv, header, capability,
3354                                                beacon_interval, channel, rssi,
3355                                                ssid_length,
3356                                                &beacon->rates_el_id,
3357                                                subtype == IEEE80211_STYPE_BEACON);
3358                 }
3359                 break;
3360
3361         case IEEE80211_STYPE_AUTH:
3362
3363                 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3364                         authenticate(priv, frame_len);
3365
3366                 break;
3367
3368         case IEEE80211_STYPE_ASSOC_RESP:
3369         case IEEE80211_STYPE_REASSOC_RESP:
3370
3371                 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3372                     priv->station_state == STATION_STATE_REASSOCIATING)
3373                         associate(priv, frame_len, subtype);
3374
3375                 break;
3376
3377         case IEEE80211_STYPE_DISASSOC:
3378                 if (priv->station_is_associated &&
3379                     priv->operating_mode == IW_MODE_INFRA &&
3380                     is_frame_from_current_bss(priv, header)) {
3381                         priv->station_was_associated = 0;
3382                         priv->station_is_associated = 0;
3383
3384                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3385                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3386                 }
3387
3388                 break;
3389
3390         case IEEE80211_STYPE_DEAUTH:
3391                 if (priv->operating_mode == IW_MODE_INFRA &&
3392                     is_frame_from_current_bss(priv, header)) {
3393                         priv->station_was_associated = 0;
3394
3395                         atmel_enter_state(priv, STATION_STATE_JOINNING);
3396                         join(priv, BSS_TYPE_INFRASTRUCTURE);
3397                 }
3398
3399                 break;
3400         }
3401 }
3402
3403 /* run when timer expires */
3404 static void atmel_management_timer(struct timer_list *t)
3405 {
3406         struct atmel_private *priv = from_timer(priv, t, management_timer);
3407         unsigned long flags;
3408
3409         /* Check if the card has been yanked. */
3410         if (priv->card && priv->present_callback &&
3411                 !(*priv->present_callback)(priv->card))
3412                 return;
3413
3414         spin_lock_irqsave(&priv->irqlock, flags);
3415
3416         switch (priv->station_state) {
3417
3418         case STATION_STATE_AUTHENTICATING:
3419                 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3420                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3421                         priv->station_is_associated = 0;
3422                         priv->AuthenticationRequestRetryCnt = 0;
3423                         restart_search(priv);
3424                 } else {
3425                         int auth = WLAN_AUTH_OPEN;
3426                         priv->AuthenticationRequestRetryCnt++;
3427                         priv->CurrentAuthentTransactionSeqNum = 0x0001;
3428                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3429                         if (priv->wep_is_on && priv->exclude_unencrypted)
3430                                 auth = WLAN_AUTH_SHARED_KEY;
3431                         send_authentication_request(priv, auth, NULL, 0);
3432           }
3433           break;
3434
3435         case STATION_STATE_ASSOCIATING:
3436                 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3437                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3438                         priv->station_is_associated = 0;
3439                         priv->AssociationRequestRetryCnt = 0;
3440                         restart_search(priv);
3441                 } else {
3442                         priv->AssociationRequestRetryCnt++;
3443                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3444                         send_association_request(priv, 0);
3445                 }
3446           break;
3447
3448         case STATION_STATE_REASSOCIATING:
3449                 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3450                         atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3451                         priv->station_is_associated = 0;
3452                         priv->ReAssociationRequestRetryCnt = 0;
3453                         restart_search(priv);
3454                 } else {
3455                         priv->ReAssociationRequestRetryCnt++;
3456                         mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3457                         send_association_request(priv, 1);
3458                 }
3459                 break;
3460
3461         default:
3462                 break;
3463         }
3464
3465         spin_unlock_irqrestore(&priv->irqlock, flags);
3466 }
3467
3468 static void atmel_command_irq(struct atmel_private *priv)
3469 {
3470         u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3471         u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3472         int fast_scan;
3473         union iwreq_data wrqu;
3474
3475         if (status == CMD_STATUS_IDLE ||
3476             status == CMD_STATUS_IN_PROGRESS)
3477                 return;
3478
3479         switch (command) {
3480         case CMD_Start:
3481                 if (status == CMD_STATUS_COMPLETE) {
3482                         priv->station_was_associated = priv->station_is_associated;
3483                         atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3484                                       (u8 *)priv->CurrentBSSID, 6);
3485                         atmel_enter_state(priv, STATION_STATE_READY);
3486                 }
3487                 break;
3488
3489         case CMD_Scan:
3490                 fast_scan = priv->fast_scan;
3491                 priv->fast_scan = 0;
3492
3493                 if (status != CMD_STATUS_COMPLETE) {
3494                         atmel_scan(priv, 1);
3495                 } else {
3496                         int bss_index = retrieve_bss(priv);
3497                         int notify_scan_complete = 1;
3498                         if (bss_index != -1) {
3499                                 atmel_join_bss(priv, bss_index);
3500                         } else if (priv->operating_mode == IW_MODE_ADHOC &&
3501                                    priv->SSID_size != 0) {
3502                                 start(priv, BSS_TYPE_AD_HOC);
3503                         } else {
3504                                 priv->fast_scan = !fast_scan;
3505                                 atmel_scan(priv, 1);
3506                                 notify_scan_complete = 0;
3507                         }
3508                         priv->site_survey_state = SITE_SURVEY_COMPLETED;
3509                         if (notify_scan_complete) {
3510                                 wrqu.data.length = 0;
3511                                 wrqu.data.flags = 0;
3512                                 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3513                         }
3514                 }
3515                 break;
3516
3517         case CMD_SiteSurvey:
3518                 priv->fast_scan = 0;
3519
3520                 if (status != CMD_STATUS_COMPLETE)
3521                         return;
3522
3523                 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3524                 if (priv->station_is_associated) {
3525                         atmel_enter_state(priv, STATION_STATE_READY);
3526                         wrqu.data.length = 0;
3527                         wrqu.data.flags = 0;
3528                         wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3529                 } else {
3530                         atmel_scan(priv, 1);
3531                 }
3532                 break;
3533
3534         case CMD_Join:
3535                 if (status == CMD_STATUS_COMPLETE) {
3536                         if (priv->operating_mode == IW_MODE_ADHOC) {
3537                                 priv->station_was_associated = priv->station_is_associated;
3538                                 atmel_enter_state(priv, STATION_STATE_READY);
3539                         } else {
3540                                 int auth = WLAN_AUTH_OPEN;
3541                                 priv->AuthenticationRequestRetryCnt = 0;
3542                                 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3543
3544                                 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3545                                 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3546                                 if (priv->wep_is_on && priv->exclude_unencrypted)
3547                                         auth = WLAN_AUTH_SHARED_KEY;
3548                                 send_authentication_request(priv, auth, NULL, 0);
3549                         }
3550                         return;
3551                 }
3552
3553                 atmel_scan(priv, 1);
3554         }
3555 }
3556
3557 static int atmel_wakeup_firmware(struct atmel_private *priv)
3558 {
3559         struct host_info_struct *iface = &priv->host_info;
3560         u16 mr1, mr3;
3561         int i;
3562
3563         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3564                 atmel_set_gcr(priv->dev, GCR_REMAP);
3565
3566         /* wake up on-board processor */
3567         atmel_clear_gcr(priv->dev, 0x0040);
3568         atmel_write16(priv->dev, BSR, BSS_SRAM);
3569
3570         if (priv->card_type == CARD_TYPE_SPI_FLASH)
3571                 mdelay(100);
3572
3573         /* and wait for it */
3574         for (i = LOOP_RETRY_LIMIT; i; i--) {
3575                 mr1 = atmel_read16(priv->dev, MR1);
3576                 mr3 = atmel_read16(priv->dev, MR3);
3577
3578                 if (mr3 & MAC_BOOT_COMPLETE)
3579                         break;
3580                 if (mr1 & MAC_BOOT_COMPLETE &&
3581                     priv->bus_type == BUS_TYPE_PCCARD)
3582                         break;
3583         }
3584
3585         if (i == 0) {
3586                 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3587                 return -EIO;
3588         }
3589
3590         if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3591                 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3592                 return -ENODEV;
3593         }
3594
3595         /* now check for completion of MAC initialization through
3596            the FunCtrl field of the IFACE, poll MR1 to detect completion of
3597            MAC initialization, check completion status, set interrupt mask,
3598            enables interrupts and calls Tx and Rx initialization functions */
3599
3600         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3601
3602         for (i = LOOP_RETRY_LIMIT; i; i--) {
3603                 mr1 = atmel_read16(priv->dev, MR1);
3604                 mr3 = atmel_read16(priv->dev, MR3);
3605
3606                 if (mr3 & MAC_INIT_COMPLETE)
3607                         break;
3608                 if (mr1 & MAC_INIT_COMPLETE &&
3609                     priv->bus_type == BUS_TYPE_PCCARD)
3610                         break;
3611         }
3612
3613         if (i == 0) {
3614                 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3615                                 priv->dev->name);
3616                 return -EIO;
3617         }
3618
3619         /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3620         if ((mr3 & MAC_INIT_COMPLETE) &&
3621             !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3622                 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3623                 return -EIO;
3624         }
3625         if ((mr1 & MAC_INIT_COMPLETE) &&
3626             !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3627                 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3628                 return -EIO;
3629         }
3630
3631         atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3632                            priv->host_info_base, sizeof(*iface));
3633
3634         iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3635         iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3636         iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3637         iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3638         iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3639         iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3640         iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3641         iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3642         iface->build_version = le16_to_cpu(iface->build_version);
3643         iface->command_pos = le16_to_cpu(iface->command_pos);
3644         iface->major_version = le16_to_cpu(iface->major_version);
3645         iface->minor_version = le16_to_cpu(iface->minor_version);
3646         iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3647         iface->mac_status = le16_to_cpu(iface->mac_status);
3648
3649         return 0;
3650 }
3651
3652 /* determine type of memory and MAC address */
3653 static int probe_atmel_card(struct net_device *dev)
3654 {
3655         int rc = 0;
3656         struct atmel_private *priv = netdev_priv(dev);
3657         u8 addr[ETH_ALEN] = {};
3658
3659         /* reset pccard */
3660         if (priv->bus_type == BUS_TYPE_PCCARD)
3661                 atmel_write16(dev, GCR, 0x0060);
3662
3663         atmel_write16(dev, GCR, 0x0040);
3664         msleep(500);
3665
3666         if (atmel_read16(dev, MR2) == 0) {
3667                 /* No stored firmware so load a small stub which just
3668                    tells us the MAC address */
3669                 int i;
3670                 priv->card_type = CARD_TYPE_EEPROM;
3671                 atmel_write16(dev, BSR, BSS_IRAM);
3672                 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3673                 atmel_set_gcr(dev, GCR_REMAP);
3674                 atmel_clear_gcr(priv->dev, 0x0040);
3675                 atmel_write16(dev, BSR, BSS_SRAM);
3676                 for (i = LOOP_RETRY_LIMIT; i; i--)
3677                         if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3678                                 break;
3679                 if (i == 0) {
3680                         printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3681                 } else {
3682
3683                         atmel_copy_to_host(dev, addr, atmel_read16(dev, MR2), 6);
3684                         eth_hw_addr_set(dev, addr);
3685                         /* got address, now squash it again until the network
3686                            interface is opened */
3687                         if (priv->bus_type == BUS_TYPE_PCCARD)
3688                                 atmel_write16(dev, GCR, 0x0060);
3689                         atmel_write16(dev, GCR, 0x0040);
3690                         rc = 1;
3691                 }
3692         } else if (atmel_read16(dev, MR4) == 0) {
3693                 /* Mac address easy in this case. */
3694                 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3695                 atmel_write16(dev,  BSR, 1);
3696                 atmel_copy_to_host(dev, addr, 0xc000, 6);
3697                 eth_hw_addr_set(dev, addr);
3698                 atmel_write16(dev,  BSR, 0x200);
3699                 rc = 1;
3700         } else {
3701                 /* Standard firmware in flash, boot it up and ask
3702                    for the Mac Address */
3703                 priv->card_type = CARD_TYPE_SPI_FLASH;
3704                 if (atmel_wakeup_firmware(priv) == 0) {
3705                         atmel_get_mib(priv, Mac_Address_Mib_Type, 0, addr, 6);
3706                         eth_hw_addr_set(dev, addr);
3707
3708                         /* got address, now squash it again until the network
3709                            interface is opened */
3710                         if (priv->bus_type == BUS_TYPE_PCCARD)
3711                                 atmel_write16(dev, GCR, 0x0060);
3712                         atmel_write16(dev, GCR, 0x0040);
3713                         rc = 1;
3714                 }
3715         }
3716
3717         if (rc) {
3718                 if (dev->dev_addr[0] == 0xFF) {
3719                         static const u8 default_mac[] = {
3720                                 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3721                         };
3722                         printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3723                         eth_hw_addr_set(dev, default_mac);
3724                 }
3725         }
3726
3727         return rc;
3728 }
3729
3730 /* Move the encyption information on the MIB structure.
3731    This routine is for the pre-WPA firmware: later firmware has
3732    a different format MIB and a different routine. */
3733 static void build_wep_mib(struct atmel_private *priv)
3734 {
3735         struct { /* NB this is matched to the hardware, don't change. */
3736                 u8 wep_is_on;
3737                 u8 default_key; /* 0..3 */
3738                 u8 reserved;
3739                 u8 exclude_unencrypted;
3740
3741                 u32 WEPICV_error_count;
3742                 u32 WEP_excluded_count;
3743
3744                 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3745                 u8 encryption_level; /* 0, 1, 2 */
3746                 u8 reserved2[3];
3747         } mib;
3748         int i;
3749
3750         mib.wep_is_on = priv->wep_is_on;
3751         if (priv->wep_is_on) {
3752                 if (priv->wep_key_len[priv->default_key] > 5)
3753                         mib.encryption_level = 2;
3754                 else
3755                         mib.encryption_level = 1;
3756         } else {
3757                 mib.encryption_level = 0;
3758         }
3759
3760         mib.default_key = priv->default_key;
3761         mib.exclude_unencrypted = priv->exclude_unencrypted;
3762
3763         for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3764                 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3765
3766         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3767 }
3768
3769 static void build_wpa_mib(struct atmel_private *priv)
3770 {
3771         /* This is for the later (WPA enabled) firmware. */
3772
3773         struct { /* NB this is matched to the hardware, don't change. */
3774                 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3775                 u8 receiver_address[ETH_ALEN];
3776                 u8 wep_is_on;
3777                 u8 default_key; /* 0..3 */
3778                 u8 group_key;
3779                 u8 exclude_unencrypted;
3780                 u8 encryption_type;
3781                 u8 reserved;
3782
3783                 u32 WEPICV_error_count;
3784                 u32 WEP_excluded_count;
3785
3786                 u8 key_RSC[4][8];
3787         } mib;
3788
3789         int i;
3790
3791         mib.wep_is_on = priv->wep_is_on;
3792         mib.exclude_unencrypted = priv->exclude_unencrypted;
3793         memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3794
3795         /* zero all the keys before adding in valid ones. */
3796         memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3797
3798         if (priv->wep_is_on) {
3799                 /* There's a comment in the Atmel code to the effect that this
3800                    is only valid when still using WEP, it may need to be set to
3801                    something to use WPA */
3802                 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3803
3804                 mib.default_key = mib.group_key = 255;
3805                 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3806                         if (priv->wep_key_len[i] > 0) {
3807                                 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3808                                 if (i == priv->default_key) {
3809                                         mib.default_key = i;
3810                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3811                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3812                                 } else {
3813                                         mib.group_key = i;
3814                                         priv->group_cipher_suite = priv->pairwise_cipher_suite;
3815                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3816                                         mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3817                                 }
3818                         }
3819                 }
3820                 if (mib.default_key == 255)
3821                         mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3822                 if (mib.group_key == 255)
3823                         mib.group_key = mib.default_key;
3824
3825         }
3826
3827         atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3828 }
3829
3830 static int reset_atmel_card(struct net_device *dev)
3831 {
3832         /* do everything necessary to wake up the hardware, including
3833            waiting for the lightning strike and throwing the knife switch....
3834
3835            set all the Mib values which matter in the card to match
3836            their settings in the atmel_private structure. Some of these
3837            can be altered on the fly, but many (WEP, infrastructure or ad-hoc)
3838            can only be changed by tearing down the world and coming back through
3839            here.
3840
3841            This routine is also responsible for initialising some
3842            hardware-specific fields in the atmel_private structure,
3843            including a copy of the firmware's hostinfo structure
3844            which is the route into the rest of the firmware datastructures. */
3845
3846         struct atmel_private *priv = netdev_priv(dev);
3847         u8 configuration;
3848         int old_state = priv->station_state;
3849         int err = 0;
3850
3851         /* data to add to the firmware names, in priority order
3852            this implemenents firmware versioning */
3853
3854         static char *firmware_modifier[] = {
3855                 "-wpa",
3856                 "",
3857                 NULL
3858         };
3859
3860         /* reset pccard */
3861         if (priv->bus_type == BUS_TYPE_PCCARD)
3862                 atmel_write16(priv->dev, GCR, 0x0060);
3863
3864         /* stop card , disable interrupts */
3865         atmel_write16(priv->dev, GCR, 0x0040);
3866
3867         if (priv->card_type == CARD_TYPE_EEPROM) {
3868                 /* copy in firmware if needed */
3869                 const struct firmware *fw_entry = NULL;
3870                 const unsigned char *fw;
3871                 int len = priv->firmware_length;
3872                 if (!(fw = priv->firmware)) {
3873                         if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3874                                 if (strlen(priv->firmware_id) == 0) {
3875                                         printk(KERN_INFO
3876                                                "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3877                                                dev->name);
3878                                         printk(KERN_INFO
3879                                                "%s: if not, use the firmware= module parameter.\n",
3880                                                dev->name);
3881                                         strcpy(priv->firmware_id, "/*(DEBLOBBED)*/");
3882                                 }
3883                                 err = reject_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3884                                 if (err != 0) {
3885                                         printk(KERN_ALERT
3886                                                "%s: firmware %s is missing, cannot continue.\n",
3887                                                dev->name, priv->firmware_id);
3888                                         return err;
3889                                 }
3890                         } else {
3891                                 int fw_index = 0;
3892                                 int success = 0;
3893
3894                                 /* get firmware filename entry based on firmware type ID */
3895                                 while (fw_table[fw_index].fw_type != priv->firmware_type
3896                                                 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3897                                         fw_index++;
3898
3899                                 /* construct the actual firmware file name */
3900                                 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3901                                         int i;
3902                                         for (i = 0; firmware_modifier[i]; i++) {
3903                                                 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3904                                                         firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3905                                                 priv->firmware_id[31] = '\0';
3906                                                 if (reject_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3907                                                         success = 1;
3908                                                         break;
3909                                                 }
3910                                         }
3911                                 }
3912                                 if (!success) {
3913                                         printk(KERN_ALERT
3914                                                "%s: firmware %s is missing, cannot start.\n",
3915                                                dev->name, priv->firmware_id);
3916                                         priv->firmware_id[0] = '\0';
3917                                         return -ENOENT;
3918                                 }
3919                         }
3920
3921                         fw = fw_entry->data;
3922                         len = fw_entry->size;
3923                 }
3924
3925                 if (len <= 0x6000) {
3926                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3927                         atmel_copy_to_card(priv->dev, 0, fw, len);
3928                         atmel_set_gcr(priv->dev, GCR_REMAP);
3929                 } else {
3930                         /* Remap */
3931                         atmel_set_gcr(priv->dev, GCR_REMAP);
3932                         atmel_write16(priv->dev, BSR, BSS_IRAM);
3933                         atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3934                         atmel_write16(priv->dev, BSR, 0x2ff);
3935                         atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3936                 }
3937
3938                 release_firmware(fw_entry);
3939         }
3940
3941         err = atmel_wakeup_firmware(priv);
3942         if (err != 0)
3943                 return err;
3944
3945         /* Check the version and set the correct flag for wpa stuff,
3946            old and new firmware is incompatible.
3947            The pre-wpa 3com firmware reports major version 5,
3948            the wpa 3com firmware is major version 4 and doesn't need
3949            the 3com broken-ness filter. */
3950         priv->use_wpa = (priv->host_info.major_version == 4);
3951         priv->radio_on_broken = (priv->host_info.major_version == 5);
3952
3953         /* unmask all irq sources */
3954         atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3955
3956         /* int Tx system and enable Tx */
3957         atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3958         atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3959         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3960         atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3961
3962         priv->tx_desc_free = priv->host_info.tx_desc_count;
3963         priv->tx_desc_head = 0;
3964         priv->tx_desc_tail = 0;
3965         priv->tx_desc_previous = 0;
3966         priv->tx_free_mem = priv->host_info.tx_buff_size;
3967         priv->tx_buff_head = 0;
3968         priv->tx_buff_tail = 0;
3969
3970         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3971         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3972                                    configuration | FUNC_CTRL_TxENABLE);
3973
3974         /* init Rx system and enable */
3975         priv->rx_desc_head = 0;
3976
3977         configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3978         atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3979                                    configuration | FUNC_CTRL_RxENABLE);
3980
3981         if (!priv->radio_on_broken) {
3982                 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3983                     CMD_STATUS_REJECTED_RADIO_OFF) {
3984                         printk(KERN_INFO "%s: cannot turn the radio on.\n",
3985                                dev->name);
3986                         return -EIO;
3987                 }
3988         }
3989
3990         /* set up enough MIB values to run. */
3991         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3992         atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
3993         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3994         atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3995         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3996         atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3997         atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3998         atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3999                       priv->dev->dev_addr, 6);
4000         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4001         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4002         atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4003         atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4004         atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4005         if (priv->use_wpa)
4006                 build_wpa_mib(priv);
4007         else
4008                 build_wep_mib(priv);
4009
4010         if (old_state == STATION_STATE_READY) {
4011                 union iwreq_data wrqu;
4012
4013                 wrqu.data.length = 0;
4014                 wrqu.data.flags = 0;
4015                 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4016                 eth_zero_addr(wrqu.ap_addr.sa_data);
4017                 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4018         }
4019
4020         return 0;
4021 }
4022
4023 static void atmel_send_command(struct atmel_private *priv, int command,
4024                                void *cmd, int cmd_size)
4025 {
4026         if (cmd)
4027                 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4028                                    cmd, cmd_size);
4029
4030         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4031         atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4032 }
4033
4034 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4035                                    void *cmd, int cmd_size)
4036 {
4037         int i, status;
4038
4039         atmel_send_command(priv, command, cmd, cmd_size);
4040
4041         for (i = 5000; i; i--) {
4042                 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4043                 if (status != CMD_STATUS_IDLE &&
4044                     status != CMD_STATUS_IN_PROGRESS)
4045                         break;
4046                 udelay(20);
4047         }
4048
4049         if (i == 0) {
4050                 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4051                 status =  CMD_STATUS_HOST_ERROR;
4052         } else {
4053                 if (command != CMD_EnableRadio)
4054                         status = CMD_STATUS_COMPLETE;
4055         }
4056
4057         return status;
4058 }
4059
4060 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4061 {
4062         struct get_set_mib m;
4063         m.type = type;
4064         m.size = 1;
4065         m.index = index;
4066
4067         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4068         return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4069 }
4070
4071 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4072 {
4073         struct get_set_mib m;
4074         m.type = type;
4075         m.size = 1;
4076         m.index = index;
4077         m.data[0] = data;
4078
4079         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4080 }
4081
4082 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4083                             u16 data)
4084 {
4085         struct get_set_mib m;
4086         m.type = type;
4087         m.size = 2;
4088         m.index = index;
4089         m.data[0] = data;
4090         m.data[1] = data >> 8;
4091
4092         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4093 }
4094
4095 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4096                           const u8 *data, int data_len)
4097 {
4098         struct get_set_mib m;
4099         m.type = type;
4100         m.size = data_len;
4101         m.index = index;
4102
4103         if (data_len > MIB_MAX_DATA_BYTES)
4104                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4105
4106         memcpy(m.data, data, data_len);
4107         atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4108 }
4109
4110 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4111                           u8 *data, int data_len)
4112 {
4113         struct get_set_mib m;
4114         m.type = type;
4115         m.size = data_len;
4116         m.index = index;
4117
4118         if (data_len > MIB_MAX_DATA_BYTES)
4119                 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4120
4121         atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4122         atmel_copy_to_host(priv->dev, data,
4123                            atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4124 }
4125
4126 static void atmel_writeAR(struct net_device *dev, u16 data)
4127 {
4128         int i;
4129         outw(data, dev->base_addr + AR);
4130         /* Address register appears to need some convincing..... */
4131         for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4132                 outw(data, dev->base_addr + AR);
4133 }
4134
4135 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4136                                const unsigned char *src, u16 len)
4137 {
4138         int i;
4139         atmel_writeAR(dev, dest);
4140         if (dest % 2) {
4141                 atmel_write8(dev, DR, *src);
4142                 src++; len--;
4143         }
4144         for (i = len; i > 1 ; i -= 2) {
4145                 u8 lb = *src++;
4146                 u8 hb = *src++;
4147                 atmel_write16(dev, DR, lb | (hb << 8));
4148         }
4149         if (i)
4150                 atmel_write8(dev, DR, *src);
4151 }
4152
4153 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4154                                u16 src, u16 len)
4155 {
4156         int i;
4157         atmel_writeAR(dev, src);
4158         if (src % 2) {
4159                 *dest = atmel_read8(dev, DR);
4160                 dest++; len--;
4161         }
4162         for (i = len; i > 1 ; i -= 2) {
4163                 u16 hw = atmel_read16(dev, DR);
4164                 *dest++ = hw;
4165                 *dest++ = hw >> 8;
4166         }
4167         if (i)
4168                 *dest = atmel_read8(dev, DR);
4169 }
4170
4171 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4172 {
4173         outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4174 }
4175
4176 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4177 {
4178         outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4179 }
4180
4181 static int atmel_lock_mac(struct atmel_private *priv)
4182 {
4183         int i, j = 20;
4184  retry:
4185         for (i = 5000; i; i--) {
4186                 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4187                         break;
4188                 udelay(20);
4189         }
4190
4191         if (!i)
4192                 return 0; /* timed out */
4193
4194         atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4195         if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4196                 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4197                 if (!j--)
4198                         return 0; /* timed out */
4199                 goto retry;
4200         }
4201
4202         return 1;
4203 }
4204
4205 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4206 {
4207         atmel_writeAR(priv->dev, pos);
4208         atmel_write16(priv->dev, DR, data); /* card is little-endian */
4209         atmel_write16(priv->dev, DR, data >> 16);
4210 }
4211
4212 /***************************************************************************/
4213 /* There follows the source form of the MAC address reading firmware       */
4214 /***************************************************************************/
4215 #if 0
4216
4217 /* Copyright 2003 Matthew T. Russotto                                      */
4218 /* But derived from the Atmel 76C502 firmware written by Atmel and         */
4219 /* included in "atmel wireless lan drivers" package                        */
4220 /*
4221     This file is part of net.russotto.AtmelMACFW, hereto referred to
4222     as AtmelMACFW
4223
4224     AtmelMACFW is free software; you can redistribute it and/or modify
4225     it under the terms of the GNU General Public License version 2
4226     as published by the Free Software Foundation.
4227
4228     AtmelMACFW is distributed in the hope that it will be useful,
4229     but WITHOUT ANY WARRANTY; without even the implied warranty of
4230     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4231     GNU General Public License for more details.
4232
4233     You should have received a copy of the GNU General Public License
4234     along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4235
4236 ****************************************************************************/
4237 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
4238 /* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
4239 /* It only works on SPI EEPROM versions of the card.                       */
4240
4241 /* This firmware initializes the SPI controller and clock, reads the MAC   */
4242 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
4243 /* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
4244 /* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
4245 /* MR4, for investigational purposes (maybe we can determine chip type     */
4246 /* from that?)                                                             */
4247
4248         .org 0
4249     .set MRBASE, 0x8000000
4250         .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4251         .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4252         .set SRAM_BASE,  0x02000000
4253         .set SP_BASE,    0x0F300000
4254         .set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
4255         .set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
4256         .set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
4257         .set STACK_BASE, 0x5600
4258         .set SP_SR, 0x10
4259         .set SP_TDRE, 2 /* status register bit -- TDR empty */
4260         .set SP_RDRF, 1 /* status register bit -- RDR full */
4261         .set SP_SWRST, 0x80
4262         .set SP_SPIEN, 0x1
4263         .set SP_CR, 0   /* control register */
4264         .set SP_MR, 4   /* mode register */
4265         .set SP_RDR, 0x08 /* Read Data Register */
4266         .set SP_TDR, 0x0C /* Transmit Data Register */
4267         .set SP_CSR0, 0x30 /* chip select registers */
4268         .set SP_CSR1, 0x34
4269         .set SP_CSR2, 0x38
4270         .set SP_CSR3, 0x3C
4271         .set NVRAM_CMD_RDSR, 5 /* read status register */
4272         .set NVRAM_CMD_READ, 3 /* read data */
4273         .set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
4274         .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4275                                   serial output, since SO is normally high.  But it
4276                                   does cause 8 clock cycles and thus 8 bits to be
4277                                   clocked in to the chip.  See Atmel's SPI
4278                                   controller (e.g. AT91M55800) timing and 4K
4279                                   SPI EEPROM manuals */
4280
4281         .set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
4282         .set NVRAM_IMAGE, 0x02000200
4283         .set NVRAM_LENGTH, 0x0200
4284         .set MAC_ADDRESS_MIB, SRAM_BASE
4285         .set MAC_ADDRESS_LENGTH, 6
4286         .set MAC_BOOT_FLAG, 0x10
4287         .set MR1, 0
4288         .set MR2, 4
4289         .set MR3, 8
4290         .set MR4, 0xC
4291 RESET_VECTOR:
4292         b RESET_HANDLER
4293 UNDEF_VECTOR:
4294         b HALT1
4295 SWI_VECTOR:
4296         b HALT1
4297 IABORT_VECTOR:
4298         b HALT1
4299 DABORT_VECTOR:
4300 RESERVED_VECTOR:
4301         b HALT1
4302 IRQ_VECTOR:
4303         b HALT1
4304 FIQ_VECTOR:
4305         b HALT1
4306 HALT1:  b HALT1
4307 RESET_HANDLER:
4308         mov     r0, #CPSR_INITIAL
4309         msr     CPSR_c, r0      /* This is probably unnecessary */
4310
4311 /* I'm guessing this is initializing clock generator electronics for SPI */
4312         ldr     r0, =SPI_CGEN_BASE
4313         mov     r1, #0
4314         mov     r1, r1, lsl #3
4315         orr     r1, r1, #0
4316         str     r1, [r0]
4317         ldr     r1, [r0, #28]
4318         bic     r1, r1, #16
4319         str     r1, [r0, #28]
4320         mov     r1, #1
4321         str     r1, [r0, #8]
4322
4323         ldr     r0, =MRBASE
4324         mov     r1, #0
4325         strh    r1, [r0, #MR1]
4326         strh    r1, [r0, #MR2]
4327         strh    r1, [r0, #MR3]
4328         strh    r1, [r0, #MR4]
4329
4330         mov     sp, #STACK_BASE
4331         bl      SP_INIT
4332         mov     r0, #10
4333         bl      DELAY9
4334         bl      GET_MAC_ADDR
4335         bl      GET_WHOLE_NVRAM
4336         ldr     r0, =MRBASE
4337         ldr     r1, =MAC_ADDRESS_MIB
4338         strh    r1, [r0, #MR2]
4339         ldr     r1, =NVRAM_IMAGE
4340         strh    r1, [r0, #MR4]
4341         mov     r1, #MAC_BOOT_FLAG
4342         strh    r1, [r0, #MR3]
4343 HALT2:  b HALT2
4344 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4345 GET_WHOLE_NVRAM:
4346         stmdb   sp!, {lr}
4347         mov     r2, #0 /* 0th bytes of NVRAM */
4348         mov     r3, #NVRAM_LENGTH
4349         mov     r1, #0          /* not used in routine */
4350         ldr     r0, =NVRAM_IMAGE
4351         bl      NVRAM_XFER
4352         ldmia   sp!, {lr}
4353         bx      lr
4354 .endfunc
4355
4356 .func Get_MAC_Addr, GET_MAC_ADDR
4357 GET_MAC_ADDR:
4358         stmdb   sp!, {lr}
4359         mov     r2, #0x120      /* address of MAC Address within NVRAM */
4360         mov     r3, #MAC_ADDRESS_LENGTH
4361         mov     r1, #0          /* not used in routine */
4362         ldr     r0, =MAC_ADDRESS_MIB
4363         bl      NVRAM_XFER
4364         ldmia   sp!, {lr}
4365         bx      lr
4366 .endfunc
4367 .ltorg
4368 .func Delay9, DELAY9
4369 DELAY9:
4370         adds    r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
4371 DELAYLOOP:
4372         beq     DELAY9_done
4373         subs    r0, r0, #1
4374         b       DELAYLOOP
4375 DELAY9_done:
4376         bx      lr
4377 .endfunc
4378
4379 .func SP_Init, SP_INIT
4380 SP_INIT:
4381         mov     r1, #SP_SWRST
4382         ldr     r0, =SP_BASE
4383         str     r1, [r0, #SP_CR] /* reset the SPI */
4384         mov     r1, #0
4385         str     r1, [r0, #SP_CR] /* release SPI from reset state */
4386         mov     r1, #SP_SPIEN
4387         str     r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4388         str     r1, [r0, #SP_CR] /* enable the SPI */
4389
4390 /*  My guess would be this turns on the SPI clock */
4391         ldr     r3, =SPI_CGEN_BASE
4392         ldr     r1, [r3, #28]
4393         orr     r1, r1, #0x2000
4394         str     r1, [r3, #28]
4395
4396         ldr     r1, =0x2000c01
4397         str     r1, [r0, #SP_CSR0]
4398         ldr     r1, =0x2000201
4399         str     r1, [r0, #SP_CSR1]
4400         str     r1, [r0, #SP_CSR2]
4401         str     r1, [r0, #SP_CSR3]
4402         ldr     r1, [r0, #SP_SR]
4403         ldr     r0, [r0, #SP_RDR]
4404         bx      lr
4405 .endfunc
4406 .func NVRAM_Init, NVRAM_INIT
4407 NVRAM_INIT:
4408         ldr     r1, =SP_BASE
4409         ldr     r0, [r1, #SP_RDR]
4410         mov     r0, #NVRAM_CMD_RDSR
4411         str     r0, [r1, #SP_TDR]
4412 SP_loop1:
4413         ldr     r0, [r1, #SP_SR]
4414         tst     r0, #SP_TDRE
4415         beq     SP_loop1
4416
4417         mov     r0, #SPI_8CLOCKS
4418         str     r0, [r1, #SP_TDR]
4419 SP_loop2:
4420         ldr     r0, [r1, #SP_SR]
4421         tst     r0, #SP_TDRE
4422         beq     SP_loop2
4423
4424         ldr     r0, [r1, #SP_RDR]
4425 SP_loop3:
4426         ldr     r0, [r1, #SP_SR]
4427         tst     r0, #SP_RDRF
4428         beq     SP_loop3
4429
4430         ldr     r0, [r1, #SP_RDR]
4431         and     r0, r0, #255
4432         bx      lr
4433 .endfunc
4434
4435 .func NVRAM_Xfer, NVRAM_XFER
4436         /* r0 = dest address */
4437         /* r1 = not used */
4438         /* r2 = src address within NVRAM */
4439         /* r3 = length */
4440 NVRAM_XFER:
4441         stmdb   sp!, {r4, r5, lr}
4442         mov     r5, r0          /* save r0 (dest address) */
4443         mov     r4, r3          /* save r3 (length) */
4444         mov     r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
4445         and     r0, r0, #8
4446         add     r0, r0, #NVRAM_CMD_READ
4447         ldr     r1, =NVRAM_SCRATCH
4448         strb    r0, [r1, #0]    /* save command in NVRAM_SCRATCH[0] */
4449         strb    r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
4450 _local1:
4451         bl      NVRAM_INIT
4452         tst     r0, #NVRAM_SR_RDY
4453         bne     _local1
4454         mov     r0, #20
4455         bl      DELAY9
4456         mov     r2, r4          /* length */
4457         mov     r1, r5          /* dest address */
4458         mov     r0, #2          /* bytes to transfer in command */
4459         bl      NVRAM_XFER2
4460         ldmia   sp!, {r4, r5, lr}
4461         bx      lr
4462 .endfunc
4463
4464 .func NVRAM_Xfer2, NVRAM_XFER2
4465 NVRAM_XFER2:
4466         stmdb   sp!, {r4, r5, r6, lr}
4467         ldr     r4, =SP_BASE
4468         mov     r3, #0
4469         cmp     r0, #0
4470         bls     _local2
4471         ldr     r5, =NVRAM_SCRATCH
4472 _local4:
4473         ldrb    r6, [r5, r3]
4474         str     r6, [r4, #SP_TDR]
4475 _local3:
4476         ldr     r6, [r4, #SP_SR]
4477         tst     r6, #SP_TDRE
4478         beq     _local3
4479         add     r3, r3, #1
4480         cmp     r3, r0 /* r0 is # of bytes to send out (command+addr) */
4481         blo     _local4
4482 _local2:
4483         mov     r3, #SPI_8CLOCKS
4484         str     r3, [r4, #SP_TDR]
4485         ldr     r0, [r4, #SP_RDR]
4486 _local5:
4487         ldr     r0, [r4, #SP_SR]
4488         tst     r0, #SP_RDRF
4489         beq     _local5
4490         ldr     r0, [r4, #SP_RDR] /* what's this byte?  It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
4491         mov     r0, #0
4492         cmp     r2, #0  /* r2 is # of bytes to copy in */
4493         bls     _local6
4494 _local7:
4495         ldr     r5, [r4, #SP_SR]
4496         tst     r5, #SP_TDRE
4497         beq     _local7
4498         str     r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
4499 _local8:
4500         ldr     r5, [r4, #SP_SR]
4501         tst     r5, #SP_RDRF
4502         beq     _local8
4503         ldr     r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4504         strb    r5, [r1], #1 /* postindexed */
4505         add     r0, r0, #1
4506         cmp     r0, r2
4507         blo     _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4508 _local6:
4509         mov     r0, #200
4510         bl      DELAY9
4511         ldmia   sp!, {r4, r5, r6, lr}
4512         bx      lr
4513 #endif