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 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards"); 79 80 /* The name of the firmware file to be loaded 81 over-rides any automatic selection */ 82 static char *firmware = NULL; 83 module_param(firmware, charp, 0); 84 85 /* table of firmware file names */ 86 static struct { 87 AtmelFWType fw_type; 88 const char *fw_file; 89 const char *fw_file_ext; 90 } fw_table[] = { 91 { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" }, 92 { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" }, 93 { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" }, 94 { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" }, 95 { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" }, 96 { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" }, 97 { ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" }, 98 { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" }, 99 { ATMEL_FW_TYPE_NONE, NULL, NULL } 100 }; 101 MODULE_FIRMWARE("atmel_at76c502-wpa.bin"); 102 MODULE_FIRMWARE("atmel_at76c502.bin"); 103 MODULE_FIRMWARE("atmel_at76c502d-wpa.bin"); 104 MODULE_FIRMWARE("atmel_at76c502d.bin"); 105 MODULE_FIRMWARE("atmel_at76c502e-wpa.bin"); 106 MODULE_FIRMWARE("atmel_at76c502e.bin"); 107 MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin"); 108 MODULE_FIRMWARE("atmel_at76c502_3com.bin"); 109 MODULE_FIRMWARE("atmel_at76c504-wpa.bin"); 110 MODULE_FIRMWARE("atmel_at76c504.bin"); 111 MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin"); 112 MODULE_FIRMWARE("atmel_at76c504_2958.bin"); 113 MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin"); 114 MODULE_FIRMWARE("atmel_at76c504a_2958.bin"); 115 MODULE_FIRMWARE("atmel_at76c506-wpa.bin"); 116 MODULE_FIRMWARE("atmel_at76c506.bin"); 117 118 #define MAX_SSID_LENGTH 32 119 #define MGMT_JIFFIES (256 * HZ / 100) 120 121 #define MAX_BSS_ENTRIES 64 122 123 /* registers */ 124 #define GCR 0x00 /* (SIR0) General Configuration Register */ 125 #define BSR 0x02 /* (SIR1) Bank Switching Select Register */ 126 #define AR 0x04 127 #define DR 0x08 128 #define MR1 0x12 /* Mirror Register 1 */ 129 #define MR2 0x14 /* Mirror Register 2 */ 130 #define MR3 0x16 /* Mirror Register 3 */ 131 #define MR4 0x18 /* Mirror Register 4 */ 132 133 #define GPR1 0x0c 134 #define GPR2 0x0e 135 #define GPR3 0x10 136 /* 137 * Constants for the GCR register. 138 */ 139 #define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */ 140 #define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */ 141 #define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */ 142 #define GCR_ENINT 0x0002 /* Enable Interrupts */ 143 #define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */ 144 145 #define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */ 146 #define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */ 147 /* 148 *Constants for the MR registers. 149 */ 150 #define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */ 151 #define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */ 152 #define MAC_INIT_OK 0x0002 /* MAC boot has been completed */ 153 154 #define MIB_MAX_DATA_BYTES 212 155 #define MIB_HEADER_SIZE 4 /* first four fields */ 156 157 struct get_set_mib { 158 u8 type; 159 u8 size; 160 u8 index; 161 u8 reserved; 162 u8 data[MIB_MAX_DATA_BYTES]; 163 }; 164 165 struct rx_desc { 166 u32 Next; 167 u16 MsduPos; 168 u16 MsduSize; 169 170 u8 State; 171 u8 Status; 172 u8 Rate; 173 u8 Rssi; 174 u8 LinkQuality; 175 u8 PreambleType; 176 u16 Duration; 177 u32 RxTime; 178 }; 179 180 #define RX_DESC_FLAG_VALID 0x80 181 #define RX_DESC_FLAG_CONSUMED 0x40 182 #define RX_DESC_FLAG_IDLE 0x00 183 184 #define RX_STATUS_SUCCESS 0x00 185 186 #define RX_DESC_MSDU_POS_OFFSET 4 187 #define RX_DESC_MSDU_SIZE_OFFSET 6 188 #define RX_DESC_FLAGS_OFFSET 8 189 #define RX_DESC_STATUS_OFFSET 9 190 #define RX_DESC_RSSI_OFFSET 11 191 #define RX_DESC_LINK_QUALITY_OFFSET 12 192 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13 193 #define RX_DESC_DURATION_OFFSET 14 194 #define RX_DESC_RX_TIME_OFFSET 16 195 196 struct tx_desc { 197 u32 NextDescriptor; 198 u16 TxStartOfFrame; 199 u16 TxLength; 200 201 u8 TxState; 202 u8 TxStatus; 203 u8 RetryCount; 204 205 u8 TxRate; 206 207 u8 KeyIndex; 208 u8 ChiperType; 209 u8 ChipreLength; 210 u8 Reserved1; 211 212 u8 Reserved; 213 u8 PacketType; 214 u16 HostTxLength; 215 }; 216 217 #define TX_DESC_NEXT_OFFSET 0 218 #define TX_DESC_POS_OFFSET 4 219 #define TX_DESC_SIZE_OFFSET 6 220 #define TX_DESC_FLAGS_OFFSET 8 221 #define TX_DESC_STATUS_OFFSET 9 222 #define TX_DESC_RETRY_OFFSET 10 223 #define TX_DESC_RATE_OFFSET 11 224 #define TX_DESC_KEY_INDEX_OFFSET 12 225 #define TX_DESC_CIPHER_TYPE_OFFSET 13 226 #define TX_DESC_CIPHER_LENGTH_OFFSET 14 227 #define TX_DESC_PACKET_TYPE_OFFSET 17 228 #define TX_DESC_HOST_LENGTH_OFFSET 18 229 230 /* 231 * Host-MAC interface 232 */ 233 234 #define TX_STATUS_SUCCESS 0x00 235 236 #define TX_FIRM_OWN 0x80 237 #define TX_DONE 0x40 238 239 #define TX_ERROR 0x01 240 241 #define TX_PACKET_TYPE_DATA 0x01 242 #define TX_PACKET_TYPE_MGMT 0x02 243 244 #define ISR_EMPTY 0x00 /* no bits set in ISR */ 245 #define ISR_TxCOMPLETE 0x01 /* packet transmitted */ 246 #define ISR_RxCOMPLETE 0x02 /* packet received */ 247 #define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */ 248 #define ISR_FATAL_ERROR 0x08 /* Fatal error */ 249 #define ISR_COMMAND_COMPLETE 0x10 /* command completed */ 250 #define ISR_OUT_OF_RANGE 0x20 /* command completed */ 251 #define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */ 252 #define ISR_GENERIC_IRQ 0x80 253 254 #define Local_Mib_Type 0x01 255 #define Mac_Address_Mib_Type 0x02 256 #define Mac_Mib_Type 0x03 257 #define Statistics_Mib_Type 0x04 258 #define Mac_Mgmt_Mib_Type 0x05 259 #define Mac_Wep_Mib_Type 0x06 260 #define Phy_Mib_Type 0x07 261 #define Multi_Domain_MIB 0x08 262 263 #define MAC_MGMT_MIB_CUR_BSSID_POS 14 264 #define MAC_MIB_FRAG_THRESHOLD_POS 8 265 #define MAC_MIB_RTS_THRESHOLD_POS 10 266 #define MAC_MIB_SHORT_RETRY_POS 16 267 #define MAC_MIB_LONG_RETRY_POS 17 268 #define MAC_MIB_SHORT_RETRY_LIMIT_POS 16 269 #define MAC_MGMT_MIB_BEACON_PER_POS 0 270 #define MAC_MGMT_MIB_STATION_ID_POS 6 271 #define MAC_MGMT_MIB_CUR_PRIVACY_POS 11 272 #define MAC_MGMT_MIB_CUR_BSSID_POS 14 273 #define MAC_MGMT_MIB_PS_MODE_POS 53 274 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54 275 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56 276 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57 277 #define PHY_MIB_CHANNEL_POS 14 278 #define PHY_MIB_RATE_SET_POS 20 279 #define PHY_MIB_REG_DOMAIN_POS 26 280 #define LOCAL_MIB_AUTO_TX_RATE_POS 3 281 #define LOCAL_MIB_SSID_SIZE 5 282 #define LOCAL_MIB_TX_PROMISCUOUS_POS 6 283 #define LOCAL_MIB_TX_MGMT_RATE_POS 7 284 #define LOCAL_MIB_TX_CONTROL_RATE_POS 8 285 #define LOCAL_MIB_PREAMBLE_TYPE 9 286 #define MAC_ADDR_MIB_MAC_ADDR_POS 0 287 288 #define CMD_Set_MIB_Vars 0x01 289 #define CMD_Get_MIB_Vars 0x02 290 #define CMD_Scan 0x03 291 #define CMD_Join 0x04 292 #define CMD_Start 0x05 293 #define CMD_EnableRadio 0x06 294 #define CMD_DisableRadio 0x07 295 #define CMD_SiteSurvey 0x0B 296 297 #define CMD_STATUS_IDLE 0x00 298 #define CMD_STATUS_COMPLETE 0x01 299 #define CMD_STATUS_UNKNOWN 0x02 300 #define CMD_STATUS_INVALID_PARAMETER 0x03 301 #define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04 302 #define CMD_STATUS_TIME_OUT 0x07 303 #define CMD_STATUS_IN_PROGRESS 0x08 304 #define CMD_STATUS_REJECTED_RADIO_OFF 0x09 305 #define CMD_STATUS_HOST_ERROR 0xFF 306 #define CMD_STATUS_BUSY 0xFE 307 308 #define CMD_BLOCK_COMMAND_OFFSET 0 309 #define CMD_BLOCK_STATUS_OFFSET 1 310 #define CMD_BLOCK_PARAMETERS_OFFSET 4 311 312 #define SCAN_OPTIONS_SITE_SURVEY 0x80 313 314 #define MGMT_FRAME_BODY_OFFSET 24 315 #define MAX_AUTHENTICATION_RETRIES 3 316 #define MAX_ASSOCIATION_RETRIES 3 317 318 #define AUTHENTICATION_RESPONSE_TIME_OUT 1000 319 320 #define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */ 321 #define LOOP_RETRY_LIMIT 500000 322 323 #define ACTIVE_MODE 1 324 #define PS_MODE 2 325 326 #define MAX_ENCRYPTION_KEYS 4 327 #define MAX_ENCRYPTION_KEY_SIZE 40 328 329 /* 330 * 802.11 related definitions 331 */ 332 333 /* 334 * Regulatory Domains 335 */ 336 337 #define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */ 338 #define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */ 339 #define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */ 340 #define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */ 341 #define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */ 342 #define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */ 343 #define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */ 344 #define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */ 345 346 #define BSS_TYPE_AD_HOC 1 347 #define BSS_TYPE_INFRASTRUCTURE 2 348 349 #define SCAN_TYPE_ACTIVE 0 350 #define SCAN_TYPE_PASSIVE 1 351 352 #define LONG_PREAMBLE 0 353 #define SHORT_PREAMBLE 1 354 #define AUTO_PREAMBLE 2 355 356 #define DATA_FRAME_WS_HEADER_SIZE 30 357 358 /* promiscuous mode control */ 359 #define PROM_MODE_OFF 0x0 360 #define PROM_MODE_UNKNOWN 0x1 361 #define PROM_MODE_CRC_FAILED 0x2 362 #define PROM_MODE_DUPLICATED 0x4 363 #define PROM_MODE_MGMT 0x8 364 #define PROM_MODE_CTRL 0x10 365 #define PROM_MODE_BAD_PROTOCOL 0x20 366 367 #define IFACE_INT_STATUS_OFFSET 0 368 #define IFACE_INT_MASK_OFFSET 1 369 #define IFACE_LOCKOUT_HOST_OFFSET 2 370 #define IFACE_LOCKOUT_MAC_OFFSET 3 371 #define IFACE_FUNC_CTRL_OFFSET 28 372 #define IFACE_MAC_STAT_OFFSET 30 373 #define IFACE_GENERIC_INT_TYPE_OFFSET 32 374 375 #define CIPHER_SUITE_NONE 0 376 #define CIPHER_SUITE_WEP_64 1 377 #define CIPHER_SUITE_TKIP 2 378 #define CIPHER_SUITE_AES 3 379 #define CIPHER_SUITE_CCX 4 380 #define CIPHER_SUITE_WEP_128 5 381 382 /* 383 * IFACE MACROS & definitions 384 */ 385 386 /* 387 * FuncCtrl field: 388 */ 389 #define FUNC_CTRL_TxENABLE 0x10 390 #define FUNC_CTRL_RxENABLE 0x20 391 #define FUNC_CTRL_INIT_COMPLETE 0x01 392 393 /* A stub firmware image which reads the MAC address from NVRAM on the card. 394 For copyright information and source see the end of this file. */ 395 static u8 mac_reader[] = { 396 0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea, 397 0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea, 398 0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 399 0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5, 400 0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5, 401 0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1, 402 0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb, 403 0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb, 404 0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5, 405 0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea, 406 0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 407 0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 408 0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 409 0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 410 0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2, 411 0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3, 412 0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 413 0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5, 414 0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5, 415 0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5, 416 0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3, 417 0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5, 418 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 419 0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5, 420 0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5, 421 0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1, 422 0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2, 423 0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb, 424 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb, 425 0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb, 426 0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3, 427 0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5, 428 0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3, 429 0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a, 430 0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5, 431 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3, 432 0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3, 433 0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3, 434 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2, 435 0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb, 436 0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02, 437 0x00, 0x01, 0x00, 0x02 438 }; 439 440 struct atmel_private { 441 void *card; /* Bus dependent structure varies for PCcard */ 442 int (*present_callback)(void *); /* And callback which uses it */ 443 char firmware_id[32]; 444 AtmelFWType firmware_type; 445 u8 *firmware; 446 int firmware_length; 447 struct timer_list management_timer; 448 struct net_device *dev; 449 struct device *sys_dev; 450 struct iw_statistics wstats; 451 spinlock_t irqlock, timerlock; /* spinlocks */ 452 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type; 453 enum { 454 CARD_TYPE_PARALLEL_FLASH, 455 CARD_TYPE_SPI_FLASH, 456 CARD_TYPE_EEPROM 457 } card_type; 458 int do_rx_crc; /* If we need to CRC incoming packets */ 459 int probe_crc; /* set if we don't yet know */ 460 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */ 461 u16 rx_desc_head; 462 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous; 463 u16 tx_free_mem, tx_buff_head, tx_buff_tail; 464 465 u16 frag_seq, frag_len, frag_no; 466 u8 frag_source[6]; 467 468 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level; 469 u8 group_cipher_suite, pairwise_cipher_suite; 470 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE]; 471 int wep_key_len[MAX_ENCRYPTION_KEYS]; 472 int use_wpa, radio_on_broken; /* firmware dependent stuff. */ 473 474 u16 host_info_base; 475 struct host_info_struct { 476 /* NB this is matched to the hardware, don't change. */ 477 u8 volatile int_status; 478 u8 volatile int_mask; 479 u8 volatile lockout_host; 480 u8 volatile lockout_mac; 481 482 u16 tx_buff_pos; 483 u16 tx_buff_size; 484 u16 tx_desc_pos; 485 u16 tx_desc_count; 486 487 u16 rx_buff_pos; 488 u16 rx_buff_size; 489 u16 rx_desc_pos; 490 u16 rx_desc_count; 491 492 u16 build_version; 493 u16 command_pos; 494 495 u16 major_version; 496 u16 minor_version; 497 498 u16 func_ctrl; 499 u16 mac_status; 500 u16 generic_IRQ_type; 501 u8 reserved[2]; 502 } host_info; 503 504 enum { 505 STATION_STATE_SCANNING, 506 STATION_STATE_JOINNING, 507 STATION_STATE_AUTHENTICATING, 508 STATION_STATE_ASSOCIATING, 509 STATION_STATE_READY, 510 STATION_STATE_REASSOCIATING, 511 STATION_STATE_DOWN, 512 STATION_STATE_MGMT_ERROR 513 } station_state; 514 515 int operating_mode, power_mode; 516 unsigned long last_qual; 517 int beacons_this_sec; 518 int channel; 519 int reg_domain, config_reg_domain; 520 int tx_rate; 521 int auto_tx_rate; 522 int rts_threshold; 523 int frag_threshold; 524 int long_retry, short_retry; 525 int preamble; 526 int default_beacon_period, beacon_period, listen_interval; 527 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum; 528 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt; 529 enum { 530 SITE_SURVEY_IDLE, 531 SITE_SURVEY_IN_PROGRESS, 532 SITE_SURVEY_COMPLETED 533 } site_survey_state; 534 unsigned long last_survey; 535 536 int station_was_associated, station_is_associated; 537 int fast_scan; 538 539 struct bss_info { 540 int channel; 541 int SSIDsize; 542 int RSSI; 543 int UsingWEP; 544 int preamble; 545 int beacon_period; 546 int BSStype; 547 u8 BSSID[6]; 548 u8 SSID[MAX_SSID_LENGTH]; 549 } BSSinfo[MAX_BSS_ENTRIES]; 550 int BSS_list_entries, current_BSS; 551 int connect_to_any_BSS; 552 int SSID_size, new_SSID_size; 553 u8 CurrentBSSID[6], BSSID[6]; 554 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH]; 555 u64 last_beacon_timestamp; 556 u8 rx_buf[MAX_WIRELESS_BODY]; 557 }; 558 559 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16}; 560 561 static const struct { 562 int reg_domain; 563 int min, max; 564 char *name; 565 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" }, 566 { REG_DOMAIN_DOC, 1, 11, "Canada" }, 567 { REG_DOMAIN_ETSI, 1, 13, "Europe" }, 568 { REG_DOMAIN_SPAIN, 10, 11, "Spain" }, 569 { REG_DOMAIN_FRANCE, 10, 13, "France" }, 570 { REG_DOMAIN_MKK, 14, 14, "MKK" }, 571 { REG_DOMAIN_MKK1, 1, 14, "MKK1" }, 572 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} }; 573 574 static void build_wpa_mib(struct atmel_private *priv); 575 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 576 static void atmel_copy_to_card(struct net_device *dev, u16 dest, 577 const unsigned char *src, u16 len); 578 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, 579 u16 src, u16 len); 580 static void atmel_set_gcr(struct net_device *dev, u16 mask); 581 static void atmel_clear_gcr(struct net_device *dev, u16 mask); 582 static int atmel_lock_mac(struct atmel_private *priv); 583 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data); 584 static void atmel_command_irq(struct atmel_private *priv); 585 static int atmel_validate_channel(struct atmel_private *priv, int channel); 586 static void atmel_management_frame(struct atmel_private *priv, 587 struct ieee80211_hdr *header, 588 u16 frame_len, u8 rssi); 589 static void atmel_management_timer(struct timer_list *t); 590 static void atmel_send_command(struct atmel_private *priv, int command, 591 void *cmd, int cmd_size); 592 static int atmel_send_command_wait(struct atmel_private *priv, int command, 593 void *cmd, int cmd_size); 594 static void atmel_transmit_management_frame(struct atmel_private *priv, 595 struct ieee80211_hdr *header, 596 u8 *body, int body_len); 597 598 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index); 599 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, 600 u8 data); 601 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, 602 u16 data); 603 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, 604 u8 *data, int data_len); 605 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, 606 u8 *data, int data_len); 607 static void atmel_scan(struct atmel_private *priv, int specific_ssid); 608 static void atmel_join_bss(struct atmel_private *priv, int bss_index); 609 static void atmel_smooth_qual(struct atmel_private *priv); 610 static void atmel_writeAR(struct net_device *dev, u16 data); 611 static int probe_atmel_card(struct net_device *dev); 612 static int reset_atmel_card(struct net_device *dev); 613 static void atmel_enter_state(struct atmel_private *priv, int new_state); 614 int atmel_open (struct net_device *dev); 615 616 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset) 617 { 618 return priv->host_info_base + offset; 619 } 620 621 static inline u16 atmel_co(struct atmel_private *priv, u16 offset) 622 { 623 return priv->host_info.command_pos + offset; 624 } 625 626 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc) 627 { 628 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset; 629 } 630 631 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc) 632 { 633 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset; 634 } 635 636 static inline u8 atmel_read8(struct net_device *dev, u16 offset) 637 { 638 return inb(dev->base_addr + offset); 639 } 640 641 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data) 642 { 643 outb(data, dev->base_addr + offset); 644 } 645 646 static inline u16 atmel_read16(struct net_device *dev, u16 offset) 647 { 648 return inw(dev->base_addr + offset); 649 } 650 651 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data) 652 { 653 outw(data, dev->base_addr + offset); 654 } 655 656 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos) 657 { 658 atmel_writeAR(priv->dev, pos); 659 return atmel_read8(priv->dev, DR); 660 } 661 662 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data) 663 { 664 atmel_writeAR(priv->dev, pos); 665 atmel_write8(priv->dev, DR, data); 666 } 667 668 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos) 669 { 670 atmel_writeAR(priv->dev, pos); 671 return atmel_read16(priv->dev, DR); 672 } 673 674 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data) 675 { 676 atmel_writeAR(priv->dev, pos); 677 atmel_write16(priv->dev, DR, data); 678 } 679 680 static const struct iw_handler_def atmel_handler_def; 681 682 static void tx_done_irq(struct atmel_private *priv) 683 { 684 int i; 685 686 for (i = 0; 687 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE && 688 i < priv->host_info.tx_desc_count; 689 i++) { 690 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head)); 691 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head)); 692 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head)); 693 694 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0); 695 696 priv->tx_free_mem += msdu_size; 697 priv->tx_desc_free++; 698 699 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size)) 700 priv->tx_buff_head = 0; 701 else 702 priv->tx_buff_head += msdu_size; 703 704 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1)) 705 priv->tx_desc_head++ ; 706 else 707 priv->tx_desc_head = 0; 708 709 if (type == TX_PACKET_TYPE_DATA) { 710 if (status == TX_STATUS_SUCCESS) 711 priv->dev->stats.tx_packets++; 712 else 713 priv->dev->stats.tx_errors++; 714 netif_wake_queue(priv->dev); 715 } 716 } 717 } 718 719 static u16 find_tx_buff(struct atmel_private *priv, u16 len) 720 { 721 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail; 722 723 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len) 724 return 0; 725 726 if (bottom_free >= len) 727 return priv->host_info.tx_buff_pos + priv->tx_buff_tail; 728 729 if (priv->tx_free_mem - bottom_free >= len) { 730 priv->tx_buff_tail = 0; 731 return priv->host_info.tx_buff_pos; 732 } 733 734 return 0; 735 } 736 737 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, 738 u16 len, u16 buff, u8 type) 739 { 740 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff); 741 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len); 742 if (!priv->use_wpa) 743 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len); 744 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type); 745 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate); 746 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0); 747 if (priv->use_wpa) { 748 int cipher_type, cipher_length; 749 if (is_bcast) { 750 cipher_type = priv->group_cipher_suite; 751 if (cipher_type == CIPHER_SUITE_WEP_64 || 752 cipher_type == CIPHER_SUITE_WEP_128) 753 cipher_length = 8; 754 else if (cipher_type == CIPHER_SUITE_TKIP) 755 cipher_length = 12; 756 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 || 757 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) { 758 cipher_type = priv->pairwise_cipher_suite; 759 cipher_length = 8; 760 } else { 761 cipher_type = CIPHER_SUITE_NONE; 762 cipher_length = 0; 763 } 764 } else { 765 cipher_type = priv->pairwise_cipher_suite; 766 if (cipher_type == CIPHER_SUITE_WEP_64 || 767 cipher_type == CIPHER_SUITE_WEP_128) 768 cipher_length = 8; 769 else if (cipher_type == CIPHER_SUITE_TKIP) 770 cipher_length = 12; 771 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 || 772 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) { 773 cipher_type = priv->group_cipher_suite; 774 cipher_length = 8; 775 } else { 776 cipher_type = CIPHER_SUITE_NONE; 777 cipher_length = 0; 778 } 779 } 780 781 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail), 782 cipher_type); 783 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail), 784 cipher_length); 785 } 786 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L); 787 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN); 788 if (priv->tx_desc_previous != priv->tx_desc_tail) 789 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0); 790 priv->tx_desc_previous = priv->tx_desc_tail; 791 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1)) 792 priv->tx_desc_tail++; 793 else 794 priv->tx_desc_tail = 0; 795 priv->tx_desc_free--; 796 priv->tx_free_mem -= len; 797 } 798 799 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) 800 { 801 static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 802 struct atmel_private *priv = netdev_priv(dev); 803 struct ieee80211_hdr header; 804 unsigned long flags; 805 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN; 806 807 if (priv->card && priv->present_callback && 808 !(*priv->present_callback)(priv->card)) { 809 dev->stats.tx_errors++; 810 dev_kfree_skb(skb); 811 return NETDEV_TX_OK; 812 } 813 814 if (priv->station_state != STATION_STATE_READY) { 815 dev->stats.tx_errors++; 816 dev_kfree_skb(skb); 817 return NETDEV_TX_OK; 818 } 819 820 /* first ensure the timer func cannot run */ 821 spin_lock_bh(&priv->timerlock); 822 /* then stop the hardware ISR */ 823 spin_lock_irqsave(&priv->irqlock, flags); 824 /* nb doing the above in the opposite order will deadlock */ 825 826 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the 827 12 first bytes (containing DA/SA) and put them in the appropriate 828 fields of the Wireless Header. Thus the packet length is then the 829 initial + 18 (+30-12) */ 830 831 if (!(buff = find_tx_buff(priv, len + 18))) { 832 dev->stats.tx_dropped++; 833 spin_unlock_irqrestore(&priv->irqlock, flags); 834 spin_unlock_bh(&priv->timerlock); 835 netif_stop_queue(dev); 836 return NETDEV_TX_BUSY; 837 } 838 839 frame_ctl = IEEE80211_FTYPE_DATA; 840 header.duration_id = 0; 841 header.seq_ctrl = 0; 842 if (priv->wep_is_on) 843 frame_ctl |= IEEE80211_FCTL_PROTECTED; 844 if (priv->operating_mode == IW_MODE_ADHOC) { 845 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN); 846 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN); 847 memcpy(&header.addr3, priv->BSSID, ETH_ALEN); 848 } else { 849 frame_ctl |= IEEE80211_FCTL_TODS; 850 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN); 851 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN); 852 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN); 853 } 854 855 if (priv->use_wpa) 856 memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN); 857 858 header.frame_control = cpu_to_le16(frame_ctl); 859 /* Copy the wireless header into the card */ 860 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE); 861 /* Copy the packet sans its 802.3 header addresses which have been replaced */ 862 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12); 863 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE; 864 865 /* low bit of first byte of destination tells us if broadcast */ 866 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA); 867 dev->stats.tx_bytes += len; 868 869 spin_unlock_irqrestore(&priv->irqlock, flags); 870 spin_unlock_bh(&priv->timerlock); 871 dev_kfree_skb(skb); 872 873 return NETDEV_TX_OK; 874 } 875 876 static void atmel_transmit_management_frame(struct atmel_private *priv, 877 struct ieee80211_hdr *header, 878 u8 *body, int body_len) 879 { 880 u16 buff; 881 int len = MGMT_FRAME_BODY_OFFSET + body_len; 882 883 if (!(buff = find_tx_buff(priv, len))) 884 return; 885 886 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET); 887 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len); 888 priv->tx_buff_tail += len; 889 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT); 890 } 891 892 static void fast_rx_path(struct atmel_private *priv, 893 struct ieee80211_hdr *header, 894 u16 msdu_size, u16 rx_packet_loc, u32 crc) 895 { 896 /* fast path: unfragmented packet copy directly into skbuf */ 897 u8 mac4[6]; 898 struct sk_buff *skb; 899 unsigned char *skbp; 900 901 /* get the final, mac 4 header field, this tells us encapsulation */ 902 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6); 903 msdu_size -= 6; 904 905 if (priv->do_rx_crc) { 906 crc = crc32_le(crc, mac4, 6); 907 msdu_size -= 4; 908 } 909 910 if (!(skb = dev_alloc_skb(msdu_size + 14))) { 911 priv->dev->stats.rx_dropped++; 912 return; 913 } 914 915 skb_reserve(skb, 2); 916 skbp = skb_put(skb, msdu_size + 12); 917 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size); 918 919 if (priv->do_rx_crc) { 920 u32 netcrc; 921 crc = crc32_le(crc, skbp + 12, msdu_size); 922 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4); 923 if ((crc ^ 0xffffffff) != netcrc) { 924 priv->dev->stats.rx_crc_errors++; 925 dev_kfree_skb(skb); 926 return; 927 } 928 } 929 930 memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */ 931 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS) 932 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN); 933 else 934 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */ 935 936 skb->protocol = eth_type_trans(skb, priv->dev); 937 skb->ip_summed = CHECKSUM_NONE; 938 netif_rx(skb); 939 priv->dev->stats.rx_bytes += 12 + msdu_size; 940 priv->dev->stats.rx_packets++; 941 } 942 943 /* Test to see if the packet in card memory at packet_loc has a valid CRC 944 It doesn't matter that this is slow: it is only used to proble the first few 945 packets. */ 946 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size) 947 { 948 int i = msdu_size - 4; 949 u32 netcrc, crc = 0xffffffff; 950 951 if (msdu_size < 4) 952 return 0; 953 954 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4); 955 956 atmel_writeAR(priv->dev, packet_loc); 957 while (i--) { 958 u8 octet = atmel_read8(priv->dev, DR); 959 crc = crc32_le(crc, &octet, 1); 960 } 961 962 return (crc ^ 0xffffffff) == netcrc; 963 } 964 965 static void frag_rx_path(struct atmel_private *priv, 966 struct ieee80211_hdr *header, 967 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, 968 u8 frag_no, int more_frags) 969 { 970 u8 mac4[ETH_ALEN]; 971 u8 source[ETH_ALEN]; 972 struct sk_buff *skb; 973 974 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS) 975 memcpy(source, header->addr3, ETH_ALEN); 976 else 977 memcpy(source, header->addr2, ETH_ALEN); 978 979 rx_packet_loc += 24; /* skip header */ 980 981 if (priv->do_rx_crc) 982 msdu_size -= 4; 983 984 if (frag_no == 0) { /* first fragment */ 985 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN); 986 msdu_size -= ETH_ALEN; 987 rx_packet_loc += ETH_ALEN; 988 989 if (priv->do_rx_crc) 990 crc = crc32_le(crc, mac4, 6); 991 992 priv->frag_seq = seq_no; 993 priv->frag_no = 1; 994 priv->frag_len = msdu_size; 995 memcpy(priv->frag_source, source, ETH_ALEN); 996 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN); 997 memcpy(priv->rx_buf, header->addr1, ETH_ALEN); 998 999 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size); 1000 1001 if (priv->do_rx_crc) { 1002 u32 netcrc; 1003 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size); 1004 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4); 1005 if ((crc ^ 0xffffffff) != netcrc) { 1006 priv->dev->stats.rx_crc_errors++; 1007 eth_broadcast_addr(priv->frag_source); 1008 } 1009 } 1010 1011 } else if (priv->frag_no == frag_no && 1012 priv->frag_seq == seq_no && 1013 memcmp(priv->frag_source, source, ETH_ALEN) == 0) { 1014 1015 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len], 1016 rx_packet_loc, msdu_size); 1017 if (priv->do_rx_crc) { 1018 u32 netcrc; 1019 crc = crc32_le(crc, 1020 &priv->rx_buf[12 + priv->frag_len], 1021 msdu_size); 1022 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4); 1023 if ((crc ^ 0xffffffff) != netcrc) { 1024 priv->dev->stats.rx_crc_errors++; 1025 eth_broadcast_addr(priv->frag_source); 1026 more_frags = 1; /* don't send broken assembly */ 1027 } 1028 } 1029 1030 priv->frag_len += msdu_size; 1031 priv->frag_no++; 1032 1033 if (!more_frags) { /* last one */ 1034 eth_broadcast_addr(priv->frag_source); 1035 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) { 1036 priv->dev->stats.rx_dropped++; 1037 } else { 1038 skb_reserve(skb, 2); 1039 skb_put_data(skb, priv->rx_buf, 1040 priv->frag_len + 12); 1041 skb->protocol = eth_type_trans(skb, priv->dev); 1042 skb->ip_summed = CHECKSUM_NONE; 1043 netif_rx(skb); 1044 priv->dev->stats.rx_bytes += priv->frag_len + 12; 1045 priv->dev->stats.rx_packets++; 1046 } 1047 } 1048 } else 1049 priv->wstats.discard.fragment++; 1050 } 1051 1052 static void rx_done_irq(struct atmel_private *priv) 1053 { 1054 int i; 1055 struct ieee80211_hdr header; 1056 1057 for (i = 0; 1058 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID && 1059 i < priv->host_info.rx_desc_count; 1060 i++) { 1061 1062 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control; 1063 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head)); 1064 u32 crc = 0xffffffff; 1065 1066 if (status != RX_STATUS_SUCCESS) { 1067 if (status == 0xc1) /* determined by experiment */ 1068 priv->wstats.discard.nwid++; 1069 else 1070 priv->dev->stats.rx_errors++; 1071 goto next; 1072 } 1073 1074 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head)); 1075 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head)); 1076 1077 if (msdu_size < 30) { 1078 priv->dev->stats.rx_errors++; 1079 goto next; 1080 } 1081 1082 /* Get header as far as end of seq_ctrl */ 1083 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24); 1084 frame_ctl = le16_to_cpu(header.frame_control); 1085 seq_control = le16_to_cpu(header.seq_ctrl); 1086 1087 /* probe for CRC use here if needed once five packets have 1088 arrived with the same crc status, we assume we know what's 1089 happening and stop probing */ 1090 if (priv->probe_crc) { 1091 if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) { 1092 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size); 1093 } else { 1094 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24); 1095 } 1096 if (priv->do_rx_crc) { 1097 if (priv->crc_ok_cnt++ > 5) 1098 priv->probe_crc = 0; 1099 } else { 1100 if (priv->crc_ko_cnt++ > 5) 1101 priv->probe_crc = 0; 1102 } 1103 } 1104 1105 /* don't CRC header when WEP in use */ 1106 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) { 1107 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24); 1108 } 1109 msdu_size -= 24; /* header */ 1110 1111 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) { 1112 int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS; 1113 u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG; 1114 u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4; 1115 1116 if (!more_fragments && packet_fragment_no == 0) { 1117 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc); 1118 } else { 1119 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc, 1120 packet_sequence_no, packet_fragment_no, more_fragments); 1121 } 1122 } 1123 1124 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { 1125 /* copy rest of packet into buffer */ 1126 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size); 1127 1128 /* we use the same buffer for frag reassembly and control packets */ 1129 eth_broadcast_addr(priv->frag_source); 1130 1131 if (priv->do_rx_crc) { 1132 /* last 4 octets is crc */ 1133 msdu_size -= 4; 1134 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size); 1135 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) { 1136 priv->dev->stats.rx_crc_errors++; 1137 goto next; 1138 } 1139 } 1140 1141 atmel_management_frame(priv, &header, msdu_size, 1142 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head))); 1143 } 1144 1145 next: 1146 /* release descriptor */ 1147 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED); 1148 1149 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1)) 1150 priv->rx_desc_head++; 1151 else 1152 priv->rx_desc_head = 0; 1153 } 1154 } 1155 1156 static irqreturn_t service_interrupt(int irq, void *dev_id) 1157 { 1158 struct net_device *dev = (struct net_device *) dev_id; 1159 struct atmel_private *priv = netdev_priv(dev); 1160 u8 isr; 1161 int i = -1; 1162 static const u8 irq_order[] = { 1163 ISR_OUT_OF_RANGE, 1164 ISR_RxCOMPLETE, 1165 ISR_TxCOMPLETE, 1166 ISR_RxFRAMELOST, 1167 ISR_FATAL_ERROR, 1168 ISR_COMMAND_COMPLETE, 1169 ISR_IBSS_MERGE, 1170 ISR_GENERIC_IRQ 1171 }; 1172 1173 if (priv->card && priv->present_callback && 1174 !(*priv->present_callback)(priv->card)) 1175 return IRQ_HANDLED; 1176 1177 /* In this state upper-level code assumes it can mess with 1178 the card unhampered by interrupts which may change register state. 1179 Note that even though the card shouldn't generate interrupts 1180 the inturrupt line may be shared. This allows card setup 1181 to go on without disabling interrupts for a long time. */ 1182 if (priv->station_state == STATION_STATE_DOWN) 1183 return IRQ_NONE; 1184 1185 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */ 1186 1187 while (1) { 1188 if (!atmel_lock_mac(priv)) { 1189 /* failed to contact card */ 1190 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name); 1191 return IRQ_HANDLED; 1192 } 1193 1194 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET)); 1195 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0); 1196 1197 if (!isr) { 1198 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */ 1199 return i == -1 ? IRQ_NONE : IRQ_HANDLED; 1200 } 1201 1202 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */ 1203 1204 for (i = 0; i < ARRAY_SIZE(irq_order); i++) 1205 if (isr & irq_order[i]) 1206 break; 1207 1208 if (!atmel_lock_mac(priv)) { 1209 /* failed to contact card */ 1210 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name); 1211 return IRQ_HANDLED; 1212 } 1213 1214 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET)); 1215 isr ^= irq_order[i]; 1216 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr); 1217 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0); 1218 1219 switch (irq_order[i]) { 1220 1221 case ISR_OUT_OF_RANGE: 1222 if (priv->operating_mode == IW_MODE_INFRA && 1223 priv->station_state == STATION_STATE_READY) { 1224 priv->station_is_associated = 0; 1225 atmel_scan(priv, 1); 1226 } 1227 break; 1228 1229 case ISR_RxFRAMELOST: 1230 priv->wstats.discard.misc++; 1231 /* fall through */ 1232 case ISR_RxCOMPLETE: 1233 rx_done_irq(priv); 1234 break; 1235 1236 case ISR_TxCOMPLETE: 1237 tx_done_irq(priv); 1238 break; 1239 1240 case ISR_FATAL_ERROR: 1241 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name); 1242 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 1243 break; 1244 1245 case ISR_COMMAND_COMPLETE: 1246 atmel_command_irq(priv); 1247 break; 1248 1249 case ISR_IBSS_MERGE: 1250 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS, 1251 priv->CurrentBSSID, 6); 1252 /* The WPA stuff cares about the current AP address */ 1253 if (priv->use_wpa) 1254 build_wpa_mib(priv); 1255 break; 1256 case ISR_GENERIC_IRQ: 1257 printk(KERN_INFO "%s: Generic_irq received.\n", dev->name); 1258 break; 1259 } 1260 } 1261 } 1262 1263 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev) 1264 { 1265 struct atmel_private *priv = netdev_priv(dev); 1266 1267 /* update the link quality here in case we are seeing no beacons 1268 at all to drive the process */ 1269 atmel_smooth_qual(priv); 1270 1271 priv->wstats.status = priv->station_state; 1272 1273 if (priv->operating_mode == IW_MODE_INFRA) { 1274 if (priv->station_state != STATION_STATE_READY) { 1275 priv->wstats.qual.qual = 0; 1276 priv->wstats.qual.level = 0; 1277 priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID 1278 | IW_QUAL_LEVEL_INVALID); 1279 } 1280 priv->wstats.qual.noise = 0; 1281 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID; 1282 } else { 1283 /* Quality levels cannot be determined in ad-hoc mode, 1284 because we can 'hear' more that one remote station. */ 1285 priv->wstats.qual.qual = 0; 1286 priv->wstats.qual.level = 0; 1287 priv->wstats.qual.noise = 0; 1288 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID 1289 | IW_QUAL_LEVEL_INVALID 1290 | IW_QUAL_NOISE_INVALID; 1291 priv->wstats.miss.beacon = 0; 1292 } 1293 1294 return &priv->wstats; 1295 } 1296 1297 static int atmel_set_mac_address(struct net_device *dev, void *p) 1298 { 1299 struct sockaddr *addr = p; 1300 1301 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len); 1302 return atmel_open(dev); 1303 } 1304 1305 EXPORT_SYMBOL(atmel_open); 1306 1307 int atmel_open(struct net_device *dev) 1308 { 1309 struct atmel_private *priv = netdev_priv(dev); 1310 int i, channel, err; 1311 1312 /* any scheduled timer is no longer needed and might screw things up.. */ 1313 del_timer_sync(&priv->management_timer); 1314 1315 /* Interrupts will not touch the card once in this state... */ 1316 priv->station_state = STATION_STATE_DOWN; 1317 1318 if (priv->new_SSID_size) { 1319 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size); 1320 priv->SSID_size = priv->new_SSID_size; 1321 priv->new_SSID_size = 0; 1322 } 1323 priv->BSS_list_entries = 0; 1324 1325 priv->AuthenticationRequestRetryCnt = 0; 1326 priv->AssociationRequestRetryCnt = 0; 1327 priv->ReAssociationRequestRetryCnt = 0; 1328 priv->CurrentAuthentTransactionSeqNum = 0x0001; 1329 priv->ExpectedAuthentTransactionSeqNum = 0x0002; 1330 1331 priv->site_survey_state = SITE_SURVEY_IDLE; 1332 priv->station_is_associated = 0; 1333 1334 err = reset_atmel_card(dev); 1335 if (err) 1336 return err; 1337 1338 if (priv->config_reg_domain) { 1339 priv->reg_domain = priv->config_reg_domain; 1340 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain); 1341 } else { 1342 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS); 1343 for (i = 0; i < ARRAY_SIZE(channel_table); i++) 1344 if (priv->reg_domain == channel_table[i].reg_domain) 1345 break; 1346 if (i == ARRAY_SIZE(channel_table)) { 1347 priv->reg_domain = REG_DOMAIN_MKK1; 1348 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name); 1349 } 1350 } 1351 1352 if ((channel = atmel_validate_channel(priv, priv->channel))) 1353 priv->channel = channel; 1354 1355 /* this moves station_state on.... */ 1356 atmel_scan(priv, 1); 1357 1358 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */ 1359 return 0; 1360 } 1361 1362 static int atmel_close(struct net_device *dev) 1363 { 1364 struct atmel_private *priv = netdev_priv(dev); 1365 1366 /* Send event to userspace that we are disassociating */ 1367 if (priv->station_state == STATION_STATE_READY) { 1368 union iwreq_data wrqu; 1369 1370 wrqu.data.length = 0; 1371 wrqu.data.flags = 0; 1372 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 1373 eth_zero_addr(wrqu.ap_addr.sa_data); 1374 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); 1375 } 1376 1377 atmel_enter_state(priv, STATION_STATE_DOWN); 1378 1379 if (priv->bus_type == BUS_TYPE_PCCARD) 1380 atmel_write16(dev, GCR, 0x0060); 1381 atmel_write16(dev, GCR, 0x0040); 1382 return 0; 1383 } 1384 1385 static int atmel_validate_channel(struct atmel_private *priv, int channel) 1386 { 1387 /* check that channel is OK, if so return zero, 1388 else return suitable default channel */ 1389 int i; 1390 1391 for (i = 0; i < ARRAY_SIZE(channel_table); i++) 1392 if (priv->reg_domain == channel_table[i].reg_domain) { 1393 if (channel >= channel_table[i].min && 1394 channel <= channel_table[i].max) 1395 return 0; 1396 else 1397 return channel_table[i].min; 1398 } 1399 return 0; 1400 } 1401 1402 static int atmel_proc_show(struct seq_file *m, void *v) 1403 { 1404 struct atmel_private *priv = m->private; 1405 int i; 1406 char *s, *r, *c; 1407 1408 seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR); 1409 1410 if (priv->station_state != STATION_STATE_DOWN) { 1411 seq_printf(m, 1412 "Firmware version:\t%d.%d build %d\n" 1413 "Firmware location:\t", 1414 priv->host_info.major_version, 1415 priv->host_info.minor_version, 1416 priv->host_info.build_version); 1417 1418 if (priv->card_type != CARD_TYPE_EEPROM) 1419 seq_puts(m, "on card\n"); 1420 else if (priv->firmware) 1421 seq_printf(m, "%s loaded by host\n", priv->firmware_id); 1422 else 1423 seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id); 1424 1425 switch (priv->card_type) { 1426 case CARD_TYPE_PARALLEL_FLASH: 1427 c = "Parallel flash"; 1428 break; 1429 case CARD_TYPE_SPI_FLASH: 1430 c = "SPI flash\n"; 1431 break; 1432 case CARD_TYPE_EEPROM: 1433 c = "EEPROM"; 1434 break; 1435 default: 1436 c = "<unknown>"; 1437 } 1438 1439 r = "<unknown>"; 1440 for (i = 0; i < ARRAY_SIZE(channel_table); i++) 1441 if (priv->reg_domain == channel_table[i].reg_domain) 1442 r = channel_table[i].name; 1443 1444 seq_printf(m, "MAC memory type:\t%s\n", c); 1445 seq_printf(m, "Regulatory domain:\t%s\n", r); 1446 seq_printf(m, "Host CRC checking:\t%s\n", 1447 priv->do_rx_crc ? "On" : "Off"); 1448 seq_printf(m, "WPA-capable firmware:\t%s\n", 1449 priv->use_wpa ? "Yes" : "No"); 1450 } 1451 1452 switch (priv->station_state) { 1453 case STATION_STATE_SCANNING: 1454 s = "Scanning"; 1455 break; 1456 case STATION_STATE_JOINNING: 1457 s = "Joining"; 1458 break; 1459 case STATION_STATE_AUTHENTICATING: 1460 s = "Authenticating"; 1461 break; 1462 case STATION_STATE_ASSOCIATING: 1463 s = "Associating"; 1464 break; 1465 case STATION_STATE_READY: 1466 s = "Ready"; 1467 break; 1468 case STATION_STATE_REASSOCIATING: 1469 s = "Reassociating"; 1470 break; 1471 case STATION_STATE_MGMT_ERROR: 1472 s = "Management error"; 1473 break; 1474 case STATION_STATE_DOWN: 1475 s = "Down"; 1476 break; 1477 default: 1478 s = "<unknown>"; 1479 } 1480 1481 seq_printf(m, "Current state:\t\t%s\n", s); 1482 return 0; 1483 } 1484 1485 static const struct net_device_ops atmel_netdev_ops = { 1486 .ndo_open = atmel_open, 1487 .ndo_stop = atmel_close, 1488 .ndo_set_mac_address = atmel_set_mac_address, 1489 .ndo_start_xmit = start_tx, 1490 .ndo_do_ioctl = atmel_ioctl, 1491 .ndo_validate_addr = eth_validate_addr, 1492 }; 1493 1494 struct net_device *init_atmel_card(unsigned short irq, unsigned long port, 1495 const AtmelFWType fw_type, 1496 struct device *sys_dev, 1497 int (*card_present)(void *), void *card) 1498 { 1499 struct net_device *dev; 1500 struct atmel_private *priv; 1501 int rc; 1502 1503 /* Create the network device object. */ 1504 dev = alloc_etherdev(sizeof(*priv)); 1505 if (!dev) 1506 return NULL; 1507 1508 if (dev_alloc_name(dev, dev->name) < 0) { 1509 printk(KERN_ERR "atmel: Couldn't get name!\n"); 1510 goto err_out_free; 1511 } 1512 1513 priv = netdev_priv(dev); 1514 priv->dev = dev; 1515 priv->sys_dev = sys_dev; 1516 priv->present_callback = card_present; 1517 priv->card = card; 1518 priv->firmware = NULL; 1519 priv->firmware_type = fw_type; 1520 if (firmware) /* module parameter */ 1521 strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id)); 1522 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI; 1523 priv->station_state = STATION_STATE_DOWN; 1524 priv->do_rx_crc = 0; 1525 /* For PCMCIA cards, some chips need CRC, some don't 1526 so we have to probe. */ 1527 if (priv->bus_type == BUS_TYPE_PCCARD) { 1528 priv->probe_crc = 1; 1529 priv->crc_ok_cnt = priv->crc_ko_cnt = 0; 1530 } else 1531 priv->probe_crc = 0; 1532 priv->last_qual = jiffies; 1533 priv->last_beacon_timestamp = 0; 1534 memset(priv->frag_source, 0xff, sizeof(priv->frag_source)); 1535 eth_zero_addr(priv->BSSID); 1536 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */ 1537 priv->station_was_associated = 0; 1538 1539 priv->last_survey = jiffies; 1540 priv->preamble = LONG_PREAMBLE; 1541 priv->operating_mode = IW_MODE_INFRA; 1542 priv->connect_to_any_BSS = 0; 1543 priv->config_reg_domain = 0; 1544 priv->reg_domain = 0; 1545 priv->tx_rate = 3; 1546 priv->auto_tx_rate = 1; 1547 priv->channel = 4; 1548 priv->power_mode = 0; 1549 priv->SSID[0] = '\0'; 1550 priv->SSID_size = 0; 1551 priv->new_SSID_size = 0; 1552 priv->frag_threshold = 2346; 1553 priv->rts_threshold = 2347; 1554 priv->short_retry = 7; 1555 priv->long_retry = 4; 1556 1557 priv->wep_is_on = 0; 1558 priv->default_key = 0; 1559 priv->encryption_level = 0; 1560 priv->exclude_unencrypted = 0; 1561 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE; 1562 priv->use_wpa = 0; 1563 memset(priv->wep_keys, 0, sizeof(priv->wep_keys)); 1564 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len)); 1565 1566 priv->default_beacon_period = priv->beacon_period = 100; 1567 priv->listen_interval = 1; 1568 1569 timer_setup(&priv->management_timer, atmel_management_timer, 0); 1570 spin_lock_init(&priv->irqlock); 1571 spin_lock_init(&priv->timerlock); 1572 1573 dev->netdev_ops = &atmel_netdev_ops; 1574 dev->wireless_handlers = &atmel_handler_def; 1575 dev->irq = irq; 1576 dev->base_addr = port; 1577 1578 /* MTU range: 68 - 2312 */ 1579 dev->min_mtu = 68; 1580 dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN; 1581 1582 SET_NETDEV_DEV(dev, sys_dev); 1583 1584 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) { 1585 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc); 1586 goto err_out_free; 1587 } 1588 1589 if (!request_region(dev->base_addr, 32, 1590 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) { 1591 goto err_out_irq; 1592 } 1593 1594 if (register_netdev(dev)) 1595 goto err_out_res; 1596 1597 if (!probe_atmel_card(dev)) { 1598 unregister_netdev(dev); 1599 goto err_out_res; 1600 } 1601 1602 netif_carrier_off(dev); 1603 1604 if (!proc_create_single_data("driver/atmel", 0, NULL, atmel_proc_show, 1605 priv)) 1606 printk(KERN_WARNING "atmel: unable to create /proc entry.\n"); 1607 1608 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n", 1609 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr); 1610 1611 return dev; 1612 1613 err_out_res: 1614 release_region(dev->base_addr, 32); 1615 err_out_irq: 1616 free_irq(dev->irq, dev); 1617 err_out_free: 1618 free_netdev(dev); 1619 return NULL; 1620 } 1621 1622 EXPORT_SYMBOL(init_atmel_card); 1623 1624 void stop_atmel_card(struct net_device *dev) 1625 { 1626 struct atmel_private *priv = netdev_priv(dev); 1627 1628 /* put a brick on it... */ 1629 if (priv->bus_type == BUS_TYPE_PCCARD) 1630 atmel_write16(dev, GCR, 0x0060); 1631 atmel_write16(dev, GCR, 0x0040); 1632 1633 del_timer_sync(&priv->management_timer); 1634 unregister_netdev(dev); 1635 remove_proc_entry("driver/atmel", NULL); 1636 free_irq(dev->irq, dev); 1637 kfree(priv->firmware); 1638 release_region(dev->base_addr, 32); 1639 free_netdev(dev); 1640 } 1641 1642 EXPORT_SYMBOL(stop_atmel_card); 1643 1644 static int atmel_set_essid(struct net_device *dev, 1645 struct iw_request_info *info, 1646 struct iw_point *dwrq, 1647 char *extra) 1648 { 1649 struct atmel_private *priv = netdev_priv(dev); 1650 1651 /* Check if we asked for `any' */ 1652 if (dwrq->flags == 0) { 1653 priv->connect_to_any_BSS = 1; 1654 } else { 1655 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; 1656 1657 priv->connect_to_any_BSS = 0; 1658 1659 /* Check the size of the string */ 1660 if (dwrq->length > MAX_SSID_LENGTH) 1661 return -E2BIG; 1662 if (index != 0) 1663 return -EINVAL; 1664 1665 memcpy(priv->new_SSID, extra, dwrq->length); 1666 priv->new_SSID_size = dwrq->length; 1667 } 1668 1669 return -EINPROGRESS; 1670 } 1671 1672 static int atmel_get_essid(struct net_device *dev, 1673 struct iw_request_info *info, 1674 struct iw_point *dwrq, 1675 char *extra) 1676 { 1677 struct atmel_private *priv = netdev_priv(dev); 1678 1679 /* Get the current SSID */ 1680 if (priv->new_SSID_size != 0) { 1681 memcpy(extra, priv->new_SSID, priv->new_SSID_size); 1682 dwrq->length = priv->new_SSID_size; 1683 } else { 1684 memcpy(extra, priv->SSID, priv->SSID_size); 1685 dwrq->length = priv->SSID_size; 1686 } 1687 1688 dwrq->flags = !priv->connect_to_any_BSS; /* active */ 1689 1690 return 0; 1691 } 1692 1693 static int atmel_get_wap(struct net_device *dev, 1694 struct iw_request_info *info, 1695 struct sockaddr *awrq, 1696 char *extra) 1697 { 1698 struct atmel_private *priv = netdev_priv(dev); 1699 memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN); 1700 awrq->sa_family = ARPHRD_ETHER; 1701 1702 return 0; 1703 } 1704 1705 static int atmel_set_encode(struct net_device *dev, 1706 struct iw_request_info *info, 1707 struct iw_point *dwrq, 1708 char *extra) 1709 { 1710 struct atmel_private *priv = netdev_priv(dev); 1711 1712 /* Basic checking: do we have a key to set ? 1713 * Note : with the new API, it's impossible to get a NULL pointer. 1714 * Therefore, we need to check a key size == 0 instead. 1715 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag 1716 * when no key is present (only change flags), but older versions 1717 * don't do it. - Jean II */ 1718 if (dwrq->length > 0) { 1719 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; 1720 int current_index = priv->default_key; 1721 /* Check the size of the key */ 1722 if (dwrq->length > 13) { 1723 return -EINVAL; 1724 } 1725 /* Check the index (none -> use current) */ 1726 if (index < 0 || index >= 4) 1727 index = current_index; 1728 else 1729 priv->default_key = index; 1730 /* Set the length */ 1731 if (dwrq->length > 5) 1732 priv->wep_key_len[index] = 13; 1733 else 1734 if (dwrq->length > 0) 1735 priv->wep_key_len[index] = 5; 1736 else 1737 /* Disable the key */ 1738 priv->wep_key_len[index] = 0; 1739 /* Check if the key is not marked as invalid */ 1740 if (!(dwrq->flags & IW_ENCODE_NOKEY)) { 1741 /* Cleanup */ 1742 memset(priv->wep_keys[index], 0, 13); 1743 /* Copy the key in the driver */ 1744 memcpy(priv->wep_keys[index], extra, dwrq->length); 1745 } 1746 /* WE specify that if a valid key is set, encryption 1747 * should be enabled (user may turn it off later) 1748 * This is also how "iwconfig ethX key on" works */ 1749 if (index == current_index && 1750 priv->wep_key_len[index] > 0) { 1751 priv->wep_is_on = 1; 1752 priv->exclude_unencrypted = 1; 1753 if (priv->wep_key_len[index] > 5) { 1754 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128; 1755 priv->encryption_level = 2; 1756 } else { 1757 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64; 1758 priv->encryption_level = 1; 1759 } 1760 } 1761 } else { 1762 /* Do we want to just set the transmit key index ? */ 1763 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; 1764 if (index >= 0 && index < 4) { 1765 priv->default_key = index; 1766 } else 1767 /* Don't complain if only change the mode */ 1768 if (!(dwrq->flags & IW_ENCODE_MODE)) 1769 return -EINVAL; 1770 } 1771 /* Read the flags */ 1772 if (dwrq->flags & IW_ENCODE_DISABLED) { 1773 priv->wep_is_on = 0; 1774 priv->encryption_level = 0; 1775 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE; 1776 } else { 1777 priv->wep_is_on = 1; 1778 if (priv->wep_key_len[priv->default_key] > 5) { 1779 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128; 1780 priv->encryption_level = 2; 1781 } else { 1782 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64; 1783 priv->encryption_level = 1; 1784 } 1785 } 1786 if (dwrq->flags & IW_ENCODE_RESTRICTED) 1787 priv->exclude_unencrypted = 1; 1788 if (dwrq->flags & IW_ENCODE_OPEN) 1789 priv->exclude_unencrypted = 0; 1790 1791 return -EINPROGRESS; /* Call commit handler */ 1792 } 1793 1794 static int atmel_get_encode(struct net_device *dev, 1795 struct iw_request_info *info, 1796 struct iw_point *dwrq, 1797 char *extra) 1798 { 1799 struct atmel_private *priv = netdev_priv(dev); 1800 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; 1801 1802 if (!priv->wep_is_on) 1803 dwrq->flags = IW_ENCODE_DISABLED; 1804 else { 1805 if (priv->exclude_unencrypted) 1806 dwrq->flags = IW_ENCODE_RESTRICTED; 1807 else 1808 dwrq->flags = IW_ENCODE_OPEN; 1809 } 1810 /* Which key do we want ? -1 -> tx index */ 1811 if (index < 0 || index >= 4) 1812 index = priv->default_key; 1813 dwrq->flags |= index + 1; 1814 /* Copy the key to the user buffer */ 1815 dwrq->length = priv->wep_key_len[index]; 1816 if (dwrq->length > 16) { 1817 dwrq->length = 0; 1818 } else { 1819 memset(extra, 0, 16); 1820 memcpy(extra, priv->wep_keys[index], dwrq->length); 1821 } 1822 1823 return 0; 1824 } 1825 1826 static int atmel_set_encodeext(struct net_device *dev, 1827 struct iw_request_info *info, 1828 union iwreq_data *wrqu, 1829 char *extra) 1830 { 1831 struct atmel_private *priv = netdev_priv(dev); 1832 struct iw_point *encoding = &wrqu->encoding; 1833 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; 1834 int idx, key_len, alg = ext->alg, set_key = 1; 1835 1836 /* Determine and validate the key index */ 1837 idx = encoding->flags & IW_ENCODE_INDEX; 1838 if (idx) { 1839 if (idx < 1 || idx > 4) 1840 return -EINVAL; 1841 idx--; 1842 } else 1843 idx = priv->default_key; 1844 1845 if (encoding->flags & IW_ENCODE_DISABLED) 1846 alg = IW_ENCODE_ALG_NONE; 1847 1848 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) { 1849 priv->default_key = idx; 1850 set_key = ext->key_len > 0 ? 1 : 0; 1851 } 1852 1853 if (set_key) { 1854 /* Set the requested key first */ 1855 switch (alg) { 1856 case IW_ENCODE_ALG_NONE: 1857 priv->wep_is_on = 0; 1858 priv->encryption_level = 0; 1859 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE; 1860 break; 1861 case IW_ENCODE_ALG_WEP: 1862 if (ext->key_len > 5) { 1863 priv->wep_key_len[idx] = 13; 1864 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128; 1865 priv->encryption_level = 2; 1866 } else if (ext->key_len > 0) { 1867 priv->wep_key_len[idx] = 5; 1868 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64; 1869 priv->encryption_level = 1; 1870 } else { 1871 return -EINVAL; 1872 } 1873 priv->wep_is_on = 1; 1874 memset(priv->wep_keys[idx], 0, 13); 1875 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]); 1876 memcpy(priv->wep_keys[idx], ext->key, key_len); 1877 break; 1878 default: 1879 return -EINVAL; 1880 } 1881 } 1882 1883 return -EINPROGRESS; 1884 } 1885 1886 static int atmel_get_encodeext(struct net_device *dev, 1887 struct iw_request_info *info, 1888 union iwreq_data *wrqu, 1889 char *extra) 1890 { 1891 struct atmel_private *priv = netdev_priv(dev); 1892 struct iw_point *encoding = &wrqu->encoding; 1893 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; 1894 int idx, max_key_len; 1895 1896 max_key_len = encoding->length - sizeof(*ext); 1897 if (max_key_len < 0) 1898 return -EINVAL; 1899 1900 idx = encoding->flags & IW_ENCODE_INDEX; 1901 if (idx) { 1902 if (idx < 1 || idx > 4) 1903 return -EINVAL; 1904 idx--; 1905 } else 1906 idx = priv->default_key; 1907 1908 encoding->flags = idx + 1; 1909 memset(ext, 0, sizeof(*ext)); 1910 1911 if (!priv->wep_is_on) { 1912 ext->alg = IW_ENCODE_ALG_NONE; 1913 ext->key_len = 0; 1914 encoding->flags |= IW_ENCODE_DISABLED; 1915 } else { 1916 if (priv->encryption_level > 0) 1917 ext->alg = IW_ENCODE_ALG_WEP; 1918 else 1919 return -EINVAL; 1920 1921 ext->key_len = priv->wep_key_len[idx]; 1922 memcpy(ext->key, priv->wep_keys[idx], ext->key_len); 1923 encoding->flags |= IW_ENCODE_ENABLED; 1924 } 1925 1926 return 0; 1927 } 1928 1929 static int atmel_set_auth(struct net_device *dev, 1930 struct iw_request_info *info, 1931 union iwreq_data *wrqu, char *extra) 1932 { 1933 struct atmel_private *priv = netdev_priv(dev); 1934 struct iw_param *param = &wrqu->param; 1935 1936 switch (param->flags & IW_AUTH_INDEX) { 1937 case IW_AUTH_WPA_VERSION: 1938 case IW_AUTH_CIPHER_PAIRWISE: 1939 case IW_AUTH_CIPHER_GROUP: 1940 case IW_AUTH_KEY_MGMT: 1941 case IW_AUTH_RX_UNENCRYPTED_EAPOL: 1942 case IW_AUTH_PRIVACY_INVOKED: 1943 /* 1944 * atmel does not use these parameters 1945 */ 1946 break; 1947 1948 case IW_AUTH_DROP_UNENCRYPTED: 1949 priv->exclude_unencrypted = param->value ? 1 : 0; 1950 break; 1951 1952 case IW_AUTH_80211_AUTH_ALG: { 1953 if (param->value & IW_AUTH_ALG_SHARED_KEY) { 1954 priv->exclude_unencrypted = 1; 1955 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) { 1956 priv->exclude_unencrypted = 0; 1957 } else 1958 return -EINVAL; 1959 break; 1960 } 1961 1962 case IW_AUTH_WPA_ENABLED: 1963 /* Silently accept disable of WPA */ 1964 if (param->value > 0) 1965 return -EOPNOTSUPP; 1966 break; 1967 1968 default: 1969 return -EOPNOTSUPP; 1970 } 1971 return -EINPROGRESS; 1972 } 1973 1974 static int atmel_get_auth(struct net_device *dev, 1975 struct iw_request_info *info, 1976 union iwreq_data *wrqu, char *extra) 1977 { 1978 struct atmel_private *priv = netdev_priv(dev); 1979 struct iw_param *param = &wrqu->param; 1980 1981 switch (param->flags & IW_AUTH_INDEX) { 1982 case IW_AUTH_DROP_UNENCRYPTED: 1983 param->value = priv->exclude_unencrypted; 1984 break; 1985 1986 case IW_AUTH_80211_AUTH_ALG: 1987 if (priv->exclude_unencrypted == 1) 1988 param->value = IW_AUTH_ALG_SHARED_KEY; 1989 else 1990 param->value = IW_AUTH_ALG_OPEN_SYSTEM; 1991 break; 1992 1993 case IW_AUTH_WPA_ENABLED: 1994 param->value = 0; 1995 break; 1996 1997 default: 1998 return -EOPNOTSUPP; 1999 } 2000 return 0; 2001 } 2002 2003 2004 static int atmel_get_name(struct net_device *dev, 2005 struct iw_request_info *info, 2006 char *cwrq, 2007 char *extra) 2008 { 2009 strcpy(cwrq, "IEEE 802.11-DS"); 2010 return 0; 2011 } 2012 2013 static int atmel_set_rate(struct net_device *dev, 2014 struct iw_request_info *info, 2015 struct iw_param *vwrq, 2016 char *extra) 2017 { 2018 struct atmel_private *priv = netdev_priv(dev); 2019 2020 if (vwrq->fixed == 0) { 2021 priv->tx_rate = 3; 2022 priv->auto_tx_rate = 1; 2023 } else { 2024 priv->auto_tx_rate = 0; 2025 2026 /* Which type of value ? */ 2027 if ((vwrq->value < 4) && (vwrq->value >= 0)) { 2028 /* Setting by rate index */ 2029 priv->tx_rate = vwrq->value; 2030 } else { 2031 /* Setting by frequency value */ 2032 switch (vwrq->value) { 2033 case 1000000: 2034 priv->tx_rate = 0; 2035 break; 2036 case 2000000: 2037 priv->tx_rate = 1; 2038 break; 2039 case 5500000: 2040 priv->tx_rate = 2; 2041 break; 2042 case 11000000: 2043 priv->tx_rate = 3; 2044 break; 2045 default: 2046 return -EINVAL; 2047 } 2048 } 2049 } 2050 2051 return -EINPROGRESS; 2052 } 2053 2054 static int atmel_set_mode(struct net_device *dev, 2055 struct iw_request_info *info, 2056 __u32 *uwrq, 2057 char *extra) 2058 { 2059 struct atmel_private *priv = netdev_priv(dev); 2060 2061 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA) 2062 return -EINVAL; 2063 2064 priv->operating_mode = *uwrq; 2065 return -EINPROGRESS; 2066 } 2067 2068 static int atmel_get_mode(struct net_device *dev, 2069 struct iw_request_info *info, 2070 __u32 *uwrq, 2071 char *extra) 2072 { 2073 struct atmel_private *priv = netdev_priv(dev); 2074 2075 *uwrq = priv->operating_mode; 2076 return 0; 2077 } 2078 2079 static int atmel_get_rate(struct net_device *dev, 2080 struct iw_request_info *info, 2081 struct iw_param *vwrq, 2082 char *extra) 2083 { 2084 struct atmel_private *priv = netdev_priv(dev); 2085 2086 if (priv->auto_tx_rate) { 2087 vwrq->fixed = 0; 2088 vwrq->value = 11000000; 2089 } else { 2090 vwrq->fixed = 1; 2091 switch (priv->tx_rate) { 2092 case 0: 2093 vwrq->value = 1000000; 2094 break; 2095 case 1: 2096 vwrq->value = 2000000; 2097 break; 2098 case 2: 2099 vwrq->value = 5500000; 2100 break; 2101 case 3: 2102 vwrq->value = 11000000; 2103 break; 2104 } 2105 } 2106 return 0; 2107 } 2108 2109 static int atmel_set_power(struct net_device *dev, 2110 struct iw_request_info *info, 2111 struct iw_param *vwrq, 2112 char *extra) 2113 { 2114 struct atmel_private *priv = netdev_priv(dev); 2115 priv->power_mode = vwrq->disabled ? 0 : 1; 2116 return -EINPROGRESS; 2117 } 2118 2119 static int atmel_get_power(struct net_device *dev, 2120 struct iw_request_info *info, 2121 struct iw_param *vwrq, 2122 char *extra) 2123 { 2124 struct atmel_private *priv = netdev_priv(dev); 2125 vwrq->disabled = priv->power_mode ? 0 : 1; 2126 vwrq->flags = IW_POWER_ON; 2127 return 0; 2128 } 2129 2130 static int atmel_set_retry(struct net_device *dev, 2131 struct iw_request_info *info, 2132 struct iw_param *vwrq, 2133 char *extra) 2134 { 2135 struct atmel_private *priv = netdev_priv(dev); 2136 2137 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) { 2138 if (vwrq->flags & IW_RETRY_LONG) 2139 priv->long_retry = vwrq->value; 2140 else if (vwrq->flags & IW_RETRY_SHORT) 2141 priv->short_retry = vwrq->value; 2142 else { 2143 /* No modifier : set both */ 2144 priv->long_retry = vwrq->value; 2145 priv->short_retry = vwrq->value; 2146 } 2147 return -EINPROGRESS; 2148 } 2149 2150 return -EINVAL; 2151 } 2152 2153 static int atmel_get_retry(struct net_device *dev, 2154 struct iw_request_info *info, 2155 struct iw_param *vwrq, 2156 char *extra) 2157 { 2158 struct atmel_private *priv = netdev_priv(dev); 2159 2160 vwrq->disabled = 0; /* Can't be disabled */ 2161 2162 /* Note : by default, display the short retry number */ 2163 if (vwrq->flags & IW_RETRY_LONG) { 2164 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; 2165 vwrq->value = priv->long_retry; 2166 } else { 2167 vwrq->flags = IW_RETRY_LIMIT; 2168 vwrq->value = priv->short_retry; 2169 if (priv->long_retry != priv->short_retry) 2170 vwrq->flags |= IW_RETRY_SHORT; 2171 } 2172 2173 return 0; 2174 } 2175 2176 static int atmel_set_rts(struct net_device *dev, 2177 struct iw_request_info *info, 2178 struct iw_param *vwrq, 2179 char *extra) 2180 { 2181 struct atmel_private *priv = netdev_priv(dev); 2182 int rthr = vwrq->value; 2183 2184 if (vwrq->disabled) 2185 rthr = 2347; 2186 if ((rthr < 0) || (rthr > 2347)) { 2187 return -EINVAL; 2188 } 2189 priv->rts_threshold = rthr; 2190 2191 return -EINPROGRESS; /* Call commit handler */ 2192 } 2193 2194 static int atmel_get_rts(struct net_device *dev, 2195 struct iw_request_info *info, 2196 struct iw_param *vwrq, 2197 char *extra) 2198 { 2199 struct atmel_private *priv = netdev_priv(dev); 2200 2201 vwrq->value = priv->rts_threshold; 2202 vwrq->disabled = (vwrq->value >= 2347); 2203 vwrq->fixed = 1; 2204 2205 return 0; 2206 } 2207 2208 static int atmel_set_frag(struct net_device *dev, 2209 struct iw_request_info *info, 2210 struct iw_param *vwrq, 2211 char *extra) 2212 { 2213 struct atmel_private *priv = netdev_priv(dev); 2214 int fthr = vwrq->value; 2215 2216 if (vwrq->disabled) 2217 fthr = 2346; 2218 if ((fthr < 256) || (fthr > 2346)) { 2219 return -EINVAL; 2220 } 2221 fthr &= ~0x1; /* Get an even value - is it really needed ??? */ 2222 priv->frag_threshold = fthr; 2223 2224 return -EINPROGRESS; /* Call commit handler */ 2225 } 2226 2227 static int atmel_get_frag(struct net_device *dev, 2228 struct iw_request_info *info, 2229 struct iw_param *vwrq, 2230 char *extra) 2231 { 2232 struct atmel_private *priv = netdev_priv(dev); 2233 2234 vwrq->value = priv->frag_threshold; 2235 vwrq->disabled = (vwrq->value >= 2346); 2236 vwrq->fixed = 1; 2237 2238 return 0; 2239 } 2240 2241 static int atmel_set_freq(struct net_device *dev, 2242 struct iw_request_info *info, 2243 struct iw_freq *fwrq, 2244 char *extra) 2245 { 2246 struct atmel_private *priv = netdev_priv(dev); 2247 int rc = -EINPROGRESS; /* Call commit handler */ 2248 2249 /* If setting by frequency, convert to a channel */ 2250 if (fwrq->e == 1) { 2251 int f = fwrq->m / 100000; 2252 2253 /* Hack to fall through... */ 2254 fwrq->e = 0; 2255 fwrq->m = ieee80211_frequency_to_channel(f); 2256 } 2257 /* Setting by channel number */ 2258 if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0) 2259 rc = -EOPNOTSUPP; 2260 else { 2261 int channel = fwrq->m; 2262 if (atmel_validate_channel(priv, channel) == 0) { 2263 priv->channel = channel; 2264 } else { 2265 rc = -EINVAL; 2266 } 2267 } 2268 return rc; 2269 } 2270 2271 static int atmel_get_freq(struct net_device *dev, 2272 struct iw_request_info *info, 2273 struct iw_freq *fwrq, 2274 char *extra) 2275 { 2276 struct atmel_private *priv = netdev_priv(dev); 2277 2278 fwrq->m = priv->channel; 2279 fwrq->e = 0; 2280 return 0; 2281 } 2282 2283 static int atmel_set_scan(struct net_device *dev, 2284 struct iw_request_info *info, 2285 struct iw_point *dwrq, 2286 char *extra) 2287 { 2288 struct atmel_private *priv = netdev_priv(dev); 2289 unsigned long flags; 2290 2291 /* Note : you may have realised that, as this is a SET operation, 2292 * this is privileged and therefore a normal user can't 2293 * perform scanning. 2294 * This is not an error, while the device perform scanning, 2295 * traffic doesn't flow, so it's a perfect DoS... 2296 * Jean II */ 2297 2298 if (priv->station_state == STATION_STATE_DOWN) 2299 return -EAGAIN; 2300 2301 /* Timeout old surveys. */ 2302 if (time_after(jiffies, priv->last_survey + 20 * HZ)) 2303 priv->site_survey_state = SITE_SURVEY_IDLE; 2304 priv->last_survey = jiffies; 2305 2306 /* Initiate a scan command */ 2307 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS) 2308 return -EBUSY; 2309 2310 del_timer_sync(&priv->management_timer); 2311 spin_lock_irqsave(&priv->irqlock, flags); 2312 2313 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS; 2314 priv->fast_scan = 0; 2315 atmel_scan(priv, 0); 2316 spin_unlock_irqrestore(&priv->irqlock, flags); 2317 2318 return 0; 2319 } 2320 2321 static int atmel_get_scan(struct net_device *dev, 2322 struct iw_request_info *info, 2323 struct iw_point *dwrq, 2324 char *extra) 2325 { 2326 struct atmel_private *priv = netdev_priv(dev); 2327 int i; 2328 char *current_ev = extra; 2329 struct iw_event iwe; 2330 2331 if (priv->site_survey_state != SITE_SURVEY_COMPLETED) 2332 return -EAGAIN; 2333 2334 for (i = 0; i < priv->BSS_list_entries; i++) { 2335 iwe.cmd = SIOCGIWAP; 2336 iwe.u.ap_addr.sa_family = ARPHRD_ETHER; 2337 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN); 2338 current_ev = iwe_stream_add_event(info, current_ev, 2339 extra + IW_SCAN_MAX_DATA, 2340 &iwe, IW_EV_ADDR_LEN); 2341 2342 iwe.u.data.length = priv->BSSinfo[i].SSIDsize; 2343 if (iwe.u.data.length > 32) 2344 iwe.u.data.length = 32; 2345 iwe.cmd = SIOCGIWESSID; 2346 iwe.u.data.flags = 1; 2347 current_ev = iwe_stream_add_point(info, current_ev, 2348 extra + IW_SCAN_MAX_DATA, 2349 &iwe, priv->BSSinfo[i].SSID); 2350 2351 iwe.cmd = SIOCGIWMODE; 2352 iwe.u.mode = priv->BSSinfo[i].BSStype; 2353 current_ev = iwe_stream_add_event(info, current_ev, 2354 extra + IW_SCAN_MAX_DATA, 2355 &iwe, IW_EV_UINT_LEN); 2356 2357 iwe.cmd = SIOCGIWFREQ; 2358 iwe.u.freq.m = priv->BSSinfo[i].channel; 2359 iwe.u.freq.e = 0; 2360 current_ev = iwe_stream_add_event(info, current_ev, 2361 extra + IW_SCAN_MAX_DATA, 2362 &iwe, IW_EV_FREQ_LEN); 2363 2364 /* Add quality statistics */ 2365 iwe.cmd = IWEVQUAL; 2366 iwe.u.qual.level = priv->BSSinfo[i].RSSI; 2367 iwe.u.qual.qual = iwe.u.qual.level; 2368 /* iwe.u.qual.noise = SOMETHING */ 2369 current_ev = iwe_stream_add_event(info, current_ev, 2370 extra + IW_SCAN_MAX_DATA, 2371 &iwe, IW_EV_QUAL_LEN); 2372 2373 2374 iwe.cmd = SIOCGIWENCODE; 2375 if (priv->BSSinfo[i].UsingWEP) 2376 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; 2377 else 2378 iwe.u.data.flags = IW_ENCODE_DISABLED; 2379 iwe.u.data.length = 0; 2380 current_ev = iwe_stream_add_point(info, current_ev, 2381 extra + IW_SCAN_MAX_DATA, 2382 &iwe, NULL); 2383 } 2384 2385 /* Length of data */ 2386 dwrq->length = (current_ev - extra); 2387 dwrq->flags = 0; 2388 2389 return 0; 2390 } 2391 2392 static int atmel_get_range(struct net_device *dev, 2393 struct iw_request_info *info, 2394 struct iw_point *dwrq, 2395 char *extra) 2396 { 2397 struct atmel_private *priv = netdev_priv(dev); 2398 struct iw_range *range = (struct iw_range *) extra; 2399 int k, i, j; 2400 2401 dwrq->length = sizeof(struct iw_range); 2402 memset(range, 0, sizeof(struct iw_range)); 2403 range->min_nwid = 0x0000; 2404 range->max_nwid = 0x0000; 2405 range->num_channels = 0; 2406 for (j = 0; j < ARRAY_SIZE(channel_table); j++) 2407 if (priv->reg_domain == channel_table[j].reg_domain) { 2408 range->num_channels = channel_table[j].max - channel_table[j].min + 1; 2409 break; 2410 } 2411 if (range->num_channels != 0) { 2412 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) { 2413 range->freq[k].i = i; /* List index */ 2414 2415 /* Values in MHz -> * 10^5 * 10 */ 2416 range->freq[k].m = 100000 * 2417 ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ); 2418 range->freq[k++].e = 1; 2419 } 2420 range->num_frequency = k; 2421 } 2422 2423 range->max_qual.qual = 100; 2424 range->max_qual.level = 100; 2425 range->max_qual.noise = 0; 2426 range->max_qual.updated = IW_QUAL_NOISE_INVALID; 2427 2428 range->avg_qual.qual = 50; 2429 range->avg_qual.level = 50; 2430 range->avg_qual.noise = 0; 2431 range->avg_qual.updated = IW_QUAL_NOISE_INVALID; 2432 2433 range->sensitivity = 0; 2434 2435 range->bitrate[0] = 1000000; 2436 range->bitrate[1] = 2000000; 2437 range->bitrate[2] = 5500000; 2438 range->bitrate[3] = 11000000; 2439 range->num_bitrates = 4; 2440 2441 range->min_rts = 0; 2442 range->max_rts = 2347; 2443 range->min_frag = 256; 2444 range->max_frag = 2346; 2445 2446 range->encoding_size[0] = 5; 2447 range->encoding_size[1] = 13; 2448 range->num_encoding_sizes = 2; 2449 range->max_encoding_tokens = 4; 2450 2451 range->pmp_flags = IW_POWER_ON; 2452 range->pmt_flags = IW_POWER_ON; 2453 range->pm_capa = 0; 2454 2455 range->we_version_source = WIRELESS_EXT; 2456 range->we_version_compiled = WIRELESS_EXT; 2457 range->retry_capa = IW_RETRY_LIMIT ; 2458 range->retry_flags = IW_RETRY_LIMIT; 2459 range->r_time_flags = 0; 2460 range->min_retry = 1; 2461 range->max_retry = 65535; 2462 2463 return 0; 2464 } 2465 2466 static int atmel_set_wap(struct net_device *dev, 2467 struct iw_request_info *info, 2468 struct sockaddr *awrq, 2469 char *extra) 2470 { 2471 struct atmel_private *priv = netdev_priv(dev); 2472 int i; 2473 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 2474 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 2475 unsigned long flags; 2476 2477 if (awrq->sa_family != ARPHRD_ETHER) 2478 return -EINVAL; 2479 2480 if (!memcmp(any, awrq->sa_data, 6) || 2481 !memcmp(off, awrq->sa_data, 6)) { 2482 del_timer_sync(&priv->management_timer); 2483 spin_lock_irqsave(&priv->irqlock, flags); 2484 atmel_scan(priv, 1); 2485 spin_unlock_irqrestore(&priv->irqlock, flags); 2486 return 0; 2487 } 2488 2489 for (i = 0; i < priv->BSS_list_entries; i++) { 2490 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) { 2491 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) { 2492 return -EINVAL; 2493 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) { 2494 return -EINVAL; 2495 } else { 2496 del_timer_sync(&priv->management_timer); 2497 spin_lock_irqsave(&priv->irqlock, flags); 2498 atmel_join_bss(priv, i); 2499 spin_unlock_irqrestore(&priv->irqlock, flags); 2500 return 0; 2501 } 2502 } 2503 } 2504 2505 return -EINVAL; 2506 } 2507 2508 static int atmel_config_commit(struct net_device *dev, 2509 struct iw_request_info *info, /* NULL */ 2510 void *zwrq, /* NULL */ 2511 char *extra) /* NULL */ 2512 { 2513 return atmel_open(dev); 2514 } 2515 2516 static const iw_handler atmel_handler[] = 2517 { 2518 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */ 2519 (iw_handler) atmel_get_name, /* SIOCGIWNAME */ 2520 (iw_handler) NULL, /* SIOCSIWNWID */ 2521 (iw_handler) NULL, /* SIOCGIWNWID */ 2522 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */ 2523 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */ 2524 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */ 2525 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */ 2526 (iw_handler) NULL, /* SIOCSIWSENS */ 2527 (iw_handler) NULL, /* SIOCGIWSENS */ 2528 (iw_handler) NULL, /* SIOCSIWRANGE */ 2529 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */ 2530 (iw_handler) NULL, /* SIOCSIWPRIV */ 2531 (iw_handler) NULL, /* SIOCGIWPRIV */ 2532 (iw_handler) NULL, /* SIOCSIWSTATS */ 2533 (iw_handler) NULL, /* SIOCGIWSTATS */ 2534 (iw_handler) NULL, /* SIOCSIWSPY */ 2535 (iw_handler) NULL, /* SIOCGIWSPY */ 2536 (iw_handler) NULL, /* -- hole -- */ 2537 (iw_handler) NULL, /* -- hole -- */ 2538 (iw_handler) atmel_set_wap, /* SIOCSIWAP */ 2539 (iw_handler) atmel_get_wap, /* SIOCGIWAP */ 2540 (iw_handler) NULL, /* -- hole -- */ 2541 (iw_handler) NULL, /* SIOCGIWAPLIST */ 2542 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */ 2543 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */ 2544 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */ 2545 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */ 2546 (iw_handler) NULL, /* SIOCSIWNICKN */ 2547 (iw_handler) NULL, /* SIOCGIWNICKN */ 2548 (iw_handler) NULL, /* -- hole -- */ 2549 (iw_handler) NULL, /* -- hole -- */ 2550 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */ 2551 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */ 2552 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */ 2553 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */ 2554 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */ 2555 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */ 2556 (iw_handler) NULL, /* SIOCSIWTXPOW */ 2557 (iw_handler) NULL, /* SIOCGIWTXPOW */ 2558 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */ 2559 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */ 2560 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */ 2561 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */ 2562 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */ 2563 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */ 2564 (iw_handler) NULL, /* -- hole -- */ 2565 (iw_handler) NULL, /* -- hole -- */ 2566 (iw_handler) NULL, /* SIOCSIWGENIE */ 2567 (iw_handler) NULL, /* SIOCGIWGENIE */ 2568 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */ 2569 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */ 2570 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */ 2571 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */ 2572 (iw_handler) NULL, /* SIOCSIWPMKSA */ 2573 }; 2574 2575 static const iw_handler atmel_private_handler[] = 2576 { 2577 NULL, /* SIOCIWFIRSTPRIV */ 2578 }; 2579 2580 struct atmel_priv_ioctl { 2581 char id[32]; 2582 unsigned char __user *data; 2583 unsigned short len; 2584 }; 2585 2586 #define ATMELFWL SIOCIWFIRSTPRIV 2587 #define ATMELIDIFC ATMELFWL + 1 2588 #define ATMELRD ATMELFWL + 2 2589 #define ATMELMAGIC 0x51807 2590 #define REGDOMAINSZ 20 2591 2592 static const struct iw_priv_args atmel_private_args[] = { 2593 { 2594 .cmd = ATMELFWL, 2595 .set_args = IW_PRIV_TYPE_BYTE 2596 | IW_PRIV_SIZE_FIXED 2597 | sizeof(struct atmel_priv_ioctl), 2598 .get_args = IW_PRIV_TYPE_NONE, 2599 .name = "atmelfwl" 2600 }, { 2601 .cmd = ATMELIDIFC, 2602 .set_args = IW_PRIV_TYPE_NONE, 2603 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 2604 .name = "atmelidifc" 2605 }, { 2606 .cmd = ATMELRD, 2607 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ, 2608 .get_args = IW_PRIV_TYPE_NONE, 2609 .name = "regdomain" 2610 }, 2611 }; 2612 2613 static const struct iw_handler_def atmel_handler_def = { 2614 .num_standard = ARRAY_SIZE(atmel_handler), 2615 .num_private = ARRAY_SIZE(atmel_private_handler), 2616 .num_private_args = ARRAY_SIZE(atmel_private_args), 2617 .standard = (iw_handler *) atmel_handler, 2618 .private = (iw_handler *) atmel_private_handler, 2619 .private_args = (struct iw_priv_args *) atmel_private_args, 2620 .get_wireless_stats = atmel_get_wireless_stats 2621 }; 2622 2623 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2624 { 2625 int i, rc = 0; 2626 struct atmel_private *priv = netdev_priv(dev); 2627 struct atmel_priv_ioctl com; 2628 struct iwreq *wrq = (struct iwreq *) rq; 2629 unsigned char *new_firmware; 2630 char domain[REGDOMAINSZ + 1]; 2631 2632 switch (cmd) { 2633 case ATMELIDIFC: 2634 wrq->u.param.value = ATMELMAGIC; 2635 break; 2636 2637 case ATMELFWL: 2638 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) { 2639 rc = -EFAULT; 2640 break; 2641 } 2642 2643 if (!capable(CAP_NET_ADMIN)) { 2644 rc = -EPERM; 2645 break; 2646 } 2647 2648 new_firmware = memdup_user(com.data, com.len); 2649 if (IS_ERR(new_firmware)) { 2650 rc = PTR_ERR(new_firmware); 2651 break; 2652 } 2653 2654 kfree(priv->firmware); 2655 2656 priv->firmware = new_firmware; 2657 priv->firmware_length = com.len; 2658 strncpy(priv->firmware_id, com.id, 31); 2659 priv->firmware_id[31] = '\0'; 2660 break; 2661 2662 case ATMELRD: 2663 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) { 2664 rc = -EFAULT; 2665 break; 2666 } 2667 2668 if (!capable(CAP_NET_ADMIN)) { 2669 rc = -EPERM; 2670 break; 2671 } 2672 2673 domain[REGDOMAINSZ] = 0; 2674 rc = -EINVAL; 2675 for (i = 0; i < ARRAY_SIZE(channel_table); i++) { 2676 if (!strcasecmp(channel_table[i].name, domain)) { 2677 priv->config_reg_domain = channel_table[i].reg_domain; 2678 rc = 0; 2679 } 2680 } 2681 2682 if (rc == 0 && priv->station_state != STATION_STATE_DOWN) 2683 rc = atmel_open(dev); 2684 break; 2685 2686 default: 2687 rc = -EOPNOTSUPP; 2688 } 2689 2690 return rc; 2691 } 2692 2693 struct auth_body { 2694 __le16 alg; 2695 __le16 trans_seq; 2696 __le16 status; 2697 u8 el_id; 2698 u8 chall_text_len; 2699 u8 chall_text[253]; 2700 }; 2701 2702 static void atmel_enter_state(struct atmel_private *priv, int new_state) 2703 { 2704 int old_state = priv->station_state; 2705 2706 if (new_state == old_state) 2707 return; 2708 2709 priv->station_state = new_state; 2710 2711 if (new_state == STATION_STATE_READY) { 2712 netif_start_queue(priv->dev); 2713 netif_carrier_on(priv->dev); 2714 } 2715 2716 if (old_state == STATION_STATE_READY) { 2717 netif_carrier_off(priv->dev); 2718 if (netif_running(priv->dev)) 2719 netif_stop_queue(priv->dev); 2720 priv->last_beacon_timestamp = 0; 2721 } 2722 } 2723 2724 static void atmel_scan(struct atmel_private *priv, int specific_ssid) 2725 { 2726 struct { 2727 u8 BSSID[ETH_ALEN]; 2728 u8 SSID[MAX_SSID_LENGTH]; 2729 u8 scan_type; 2730 u8 channel; 2731 __le16 BSS_type; 2732 __le16 min_channel_time; 2733 __le16 max_channel_time; 2734 u8 options; 2735 u8 SSID_size; 2736 } cmd; 2737 2738 eth_broadcast_addr(cmd.BSSID); 2739 2740 if (priv->fast_scan) { 2741 cmd.SSID_size = priv->SSID_size; 2742 memcpy(cmd.SSID, priv->SSID, priv->SSID_size); 2743 cmd.min_channel_time = cpu_to_le16(10); 2744 cmd.max_channel_time = cpu_to_le16(50); 2745 } else { 2746 priv->BSS_list_entries = 0; 2747 cmd.SSID_size = 0; 2748 cmd.min_channel_time = cpu_to_le16(10); 2749 cmd.max_channel_time = cpu_to_le16(120); 2750 } 2751 2752 cmd.options = 0; 2753 2754 if (!specific_ssid) 2755 cmd.options |= SCAN_OPTIONS_SITE_SURVEY; 2756 2757 cmd.channel = (priv->channel & 0x7f); 2758 cmd.scan_type = SCAN_TYPE_ACTIVE; 2759 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ? 2760 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE); 2761 2762 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd)); 2763 2764 /* This must come after all hardware access to avoid being messed up 2765 by stuff happening in interrupt context after we leave STATE_DOWN */ 2766 atmel_enter_state(priv, STATION_STATE_SCANNING); 2767 } 2768 2769 static void join(struct atmel_private *priv, int type) 2770 { 2771 struct { 2772 u8 BSSID[6]; 2773 u8 SSID[MAX_SSID_LENGTH]; 2774 u8 BSS_type; /* this is a short in a scan command - weird */ 2775 u8 channel; 2776 __le16 timeout; 2777 u8 SSID_size; 2778 u8 reserved; 2779 } cmd; 2780 2781 cmd.SSID_size = priv->SSID_size; 2782 memcpy(cmd.SSID, priv->SSID, priv->SSID_size); 2783 memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN); 2784 cmd.channel = (priv->channel & 0x7f); 2785 cmd.BSS_type = type; 2786 cmd.timeout = cpu_to_le16(2000); 2787 2788 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd)); 2789 } 2790 2791 static void start(struct atmel_private *priv, int type) 2792 { 2793 struct { 2794 u8 BSSID[6]; 2795 u8 SSID[MAX_SSID_LENGTH]; 2796 u8 BSS_type; 2797 u8 channel; 2798 u8 SSID_size; 2799 u8 reserved[3]; 2800 } cmd; 2801 2802 cmd.SSID_size = priv->SSID_size; 2803 memcpy(cmd.SSID, priv->SSID, priv->SSID_size); 2804 memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN); 2805 cmd.BSS_type = type; 2806 cmd.channel = (priv->channel & 0x7f); 2807 2808 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd)); 2809 } 2810 2811 static void handle_beacon_probe(struct atmel_private *priv, u16 capability, 2812 u8 channel) 2813 { 2814 int rejoin = 0; 2815 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ? 2816 SHORT_PREAMBLE : LONG_PREAMBLE; 2817 2818 if (priv->preamble != new) { 2819 priv->preamble = new; 2820 rejoin = 1; 2821 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new); 2822 } 2823 2824 if (priv->channel != channel) { 2825 priv->channel = channel; 2826 rejoin = 1; 2827 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel); 2828 } 2829 2830 if (rejoin) { 2831 priv->station_is_associated = 0; 2832 atmel_enter_state(priv, STATION_STATE_JOINNING); 2833 2834 if (priv->operating_mode == IW_MODE_INFRA) 2835 join(priv, BSS_TYPE_INFRASTRUCTURE); 2836 else 2837 join(priv, BSS_TYPE_AD_HOC); 2838 } 2839 } 2840 2841 static void send_authentication_request(struct atmel_private *priv, u16 system, 2842 u8 *challenge, int challenge_len) 2843 { 2844 struct ieee80211_hdr header; 2845 struct auth_body auth; 2846 2847 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); 2848 header.duration_id = cpu_to_le16(0x8000); 2849 header.seq_ctrl = 0; 2850 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN); 2851 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN); 2852 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN); 2853 2854 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1) 2855 /* no WEP for authentication frames with TrSeqNo 1 */ 2856 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 2857 2858 auth.alg = cpu_to_le16(system); 2859 2860 auth.status = 0; 2861 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum); 2862 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1; 2863 priv->CurrentAuthentTransactionSeqNum += 2; 2864 2865 if (challenge_len != 0) { 2866 auth.el_id = 16; /* challenge_text */ 2867 auth.chall_text_len = challenge_len; 2868 memcpy(auth.chall_text, challenge, challenge_len); 2869 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len); 2870 } else { 2871 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6); 2872 } 2873 } 2874 2875 static void send_association_request(struct atmel_private *priv, int is_reassoc) 2876 { 2877 u8 *ssid_el_p; 2878 int bodysize; 2879 struct ieee80211_hdr header; 2880 struct ass_req_format { 2881 __le16 capability; 2882 __le16 listen_interval; 2883 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */ 2884 u8 ssid_el_id; 2885 u8 ssid_len; 2886 u8 ssid[MAX_SSID_LENGTH]; 2887 u8 sup_rates_el_id; 2888 u8 sup_rates_len; 2889 u8 rates[4]; 2890 } body; 2891 2892 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2893 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ)); 2894 header.duration_id = cpu_to_le16(0x8000); 2895 header.seq_ctrl = 0; 2896 2897 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN); 2898 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN); 2899 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN); 2900 2901 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS); 2902 if (priv->wep_is_on) 2903 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); 2904 if (priv->preamble == SHORT_PREAMBLE) 2905 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); 2906 2907 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period); 2908 2909 /* current AP address - only in reassoc frame */ 2910 if (is_reassoc) { 2911 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN); 2912 ssid_el_p = &body.ssid_el_id; 2913 bodysize = 18 + priv->SSID_size; 2914 } else { 2915 ssid_el_p = &body.ap[0]; 2916 bodysize = 12 + priv->SSID_size; 2917 } 2918 2919 ssid_el_p[0] = WLAN_EID_SSID; 2920 ssid_el_p[1] = priv->SSID_size; 2921 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size); 2922 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES; 2923 ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */ 2924 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4); 2925 2926 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize); 2927 } 2928 2929 static int is_frame_from_current_bss(struct atmel_private *priv, 2930 struct ieee80211_hdr *header) 2931 { 2932 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS) 2933 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0; 2934 else 2935 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0; 2936 } 2937 2938 static int retrieve_bss(struct atmel_private *priv) 2939 { 2940 int i; 2941 int max_rssi = -128; 2942 int max_index = -1; 2943 2944 if (priv->BSS_list_entries == 0) 2945 return -1; 2946 2947 if (priv->connect_to_any_BSS) { 2948 /* Select a BSS with the max-RSSI but of the same type and of 2949 the same WEP mode and that it is not marked as 'bad' (i.e. 2950 we had previously failed to connect to this BSS with the 2951 settings that we currently use) */ 2952 priv->current_BSS = 0; 2953 for (i = 0; i < priv->BSS_list_entries; i++) { 2954 if (priv->operating_mode == priv->BSSinfo[i].BSStype && 2955 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) || 2956 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) && 2957 !(priv->BSSinfo[i].channel & 0x80)) { 2958 max_rssi = priv->BSSinfo[i].RSSI; 2959 priv->current_BSS = max_index = i; 2960 } 2961 } 2962 return max_index; 2963 } 2964 2965 for (i = 0; i < priv->BSS_list_entries; i++) { 2966 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize && 2967 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 && 2968 priv->operating_mode == priv->BSSinfo[i].BSStype && 2969 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) { 2970 if (priv->BSSinfo[i].RSSI >= max_rssi) { 2971 max_rssi = priv->BSSinfo[i].RSSI; 2972 max_index = i; 2973 } 2974 } 2975 } 2976 return max_index; 2977 } 2978 2979 static void store_bss_info(struct atmel_private *priv, 2980 struct ieee80211_hdr *header, u16 capability, 2981 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len, 2982 u8 *ssid, int is_beacon) 2983 { 2984 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3; 2985 int i, index; 2986 2987 for (index = -1, i = 0; i < priv->BSS_list_entries; i++) 2988 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0) 2989 index = i; 2990 2991 /* If we process a probe and an entry from this BSS exists 2992 we will update the BSS entry with the info from this BSS. 2993 If we process a beacon we will only update RSSI */ 2994 2995 if (index == -1) { 2996 if (priv->BSS_list_entries == MAX_BSS_ENTRIES) 2997 return; 2998 index = priv->BSS_list_entries++; 2999 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN); 3000 priv->BSSinfo[index].RSSI = rssi; 3001 } else { 3002 if (rssi > priv->BSSinfo[index].RSSI) 3003 priv->BSSinfo[index].RSSI = rssi; 3004 if (is_beacon) 3005 return; 3006 } 3007 3008 priv->BSSinfo[index].channel = channel; 3009 priv->BSSinfo[index].beacon_period = beacon_period; 3010 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY; 3011 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len); 3012 priv->BSSinfo[index].SSIDsize = ssid_len; 3013 3014 if (capability & WLAN_CAPABILITY_IBSS) 3015 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC; 3016 else if (capability & WLAN_CAPABILITY_ESS) 3017 priv->BSSinfo[index].BSStype = IW_MODE_INFRA; 3018 3019 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ? 3020 SHORT_PREAMBLE : LONG_PREAMBLE; 3021 } 3022 3023 static void authenticate(struct atmel_private *priv, u16 frame_len) 3024 { 3025 struct auth_body *auth = (struct auth_body *)priv->rx_buf; 3026 u16 status = le16_to_cpu(auth->status); 3027 u16 trans_seq_no = le16_to_cpu(auth->trans_seq); 3028 u16 system = le16_to_cpu(auth->alg); 3029 3030 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) { 3031 /* no WEP */ 3032 if (priv->station_was_associated) { 3033 atmel_enter_state(priv, STATION_STATE_REASSOCIATING); 3034 send_association_request(priv, 1); 3035 return; 3036 } else { 3037 atmel_enter_state(priv, STATION_STATE_ASSOCIATING); 3038 send_association_request(priv, 0); 3039 return; 3040 } 3041 } 3042 3043 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) { 3044 int should_associate = 0; 3045 /* WEP */ 3046 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum) 3047 return; 3048 3049 if (system == WLAN_AUTH_OPEN) { 3050 if (trans_seq_no == 0x0002) { 3051 should_associate = 1; 3052 } 3053 } else if (system == WLAN_AUTH_SHARED_KEY) { 3054 if (trans_seq_no == 0x0002 && 3055 auth->el_id == WLAN_EID_CHALLENGE) { 3056 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len); 3057 return; 3058 } else if (trans_seq_no == 0x0004) { 3059 should_associate = 1; 3060 } 3061 } 3062 3063 if (should_associate) { 3064 if (priv->station_was_associated) { 3065 atmel_enter_state(priv, STATION_STATE_REASSOCIATING); 3066 send_association_request(priv, 1); 3067 return; 3068 } else { 3069 atmel_enter_state(priv, STATION_STATE_ASSOCIATING); 3070 send_association_request(priv, 0); 3071 return; 3072 } 3073 } 3074 } 3075 3076 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { 3077 /* Flip back and forth between WEP auth modes until the max 3078 * authentication tries has been exceeded. 3079 */ 3080 if (system == WLAN_AUTH_OPEN) { 3081 priv->CurrentAuthentTransactionSeqNum = 0x001; 3082 priv->exclude_unencrypted = 1; 3083 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0); 3084 return; 3085 } else if (system == WLAN_AUTH_SHARED_KEY 3086 && priv->wep_is_on) { 3087 priv->CurrentAuthentTransactionSeqNum = 0x001; 3088 priv->exclude_unencrypted = 0; 3089 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0); 3090 return; 3091 } else if (priv->connect_to_any_BSS) { 3092 int bss_index; 3093 3094 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80; 3095 3096 if ((bss_index = retrieve_bss(priv)) != -1) { 3097 atmel_join_bss(priv, bss_index); 3098 return; 3099 } 3100 } 3101 } 3102 3103 priv->AuthenticationRequestRetryCnt = 0; 3104 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3105 priv->station_is_associated = 0; 3106 } 3107 3108 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype) 3109 { 3110 struct ass_resp_format { 3111 __le16 capability; 3112 __le16 status; 3113 __le16 ass_id; 3114 u8 el_id; 3115 u8 length; 3116 u8 rates[4]; 3117 } *ass_resp = (struct ass_resp_format *)priv->rx_buf; 3118 3119 u16 status = le16_to_cpu(ass_resp->status); 3120 u16 ass_id = le16_to_cpu(ass_resp->ass_id); 3121 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length; 3122 3123 union iwreq_data wrqu; 3124 3125 if (frame_len < 8 + rates_len) 3126 return; 3127 3128 if (status == WLAN_STATUS_SUCCESS) { 3129 if (subtype == IEEE80211_STYPE_ASSOC_RESP) 3130 priv->AssociationRequestRetryCnt = 0; 3131 else 3132 priv->ReAssociationRequestRetryCnt = 0; 3133 3134 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, 3135 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff); 3136 atmel_set_mib(priv, Phy_Mib_Type, 3137 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len); 3138 if (priv->power_mode == 0) { 3139 priv->listen_interval = 1; 3140 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, 3141 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE); 3142 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, 3143 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1); 3144 } else { 3145 priv->listen_interval = 2; 3146 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, 3147 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE); 3148 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, 3149 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2); 3150 } 3151 3152 priv->station_is_associated = 1; 3153 priv->station_was_associated = 1; 3154 atmel_enter_state(priv, STATION_STATE_READY); 3155 3156 /* Send association event to userspace */ 3157 wrqu.data.length = 0; 3158 wrqu.data.flags = 0; 3159 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN); 3160 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 3161 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); 3162 3163 return; 3164 } 3165 3166 if (subtype == IEEE80211_STYPE_ASSOC_RESP && 3167 status != WLAN_STATUS_ASSOC_DENIED_RATES && 3168 status != WLAN_STATUS_CAPS_UNSUPPORTED && 3169 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) { 3170 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3171 priv->AssociationRequestRetryCnt++; 3172 send_association_request(priv, 0); 3173 return; 3174 } 3175 3176 if (subtype == IEEE80211_STYPE_REASSOC_RESP && 3177 status != WLAN_STATUS_ASSOC_DENIED_RATES && 3178 status != WLAN_STATUS_CAPS_UNSUPPORTED && 3179 priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) { 3180 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3181 priv->ReAssociationRequestRetryCnt++; 3182 send_association_request(priv, 1); 3183 return; 3184 } 3185 3186 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3187 priv->station_is_associated = 0; 3188 3189 if (priv->connect_to_any_BSS) { 3190 int bss_index; 3191 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80; 3192 3193 if ((bss_index = retrieve_bss(priv)) != -1) 3194 atmel_join_bss(priv, bss_index); 3195 } 3196 } 3197 3198 static void atmel_join_bss(struct atmel_private *priv, int bss_index) 3199 { 3200 struct bss_info *bss = &priv->BSSinfo[bss_index]; 3201 3202 memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN); 3203 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize); 3204 3205 /* The WPA stuff cares about the current AP address */ 3206 if (priv->use_wpa) 3207 build_wpa_mib(priv); 3208 3209 /* When switching to AdHoc turn OFF Power Save if needed */ 3210 3211 if (bss->BSStype == IW_MODE_ADHOC && 3212 priv->operating_mode != IW_MODE_ADHOC && 3213 priv->power_mode) { 3214 priv->power_mode = 0; 3215 priv->listen_interval = 1; 3216 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, 3217 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE); 3218 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, 3219 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1); 3220 } 3221 3222 priv->operating_mode = bss->BSStype; 3223 priv->channel = bss->channel & 0x7f; 3224 priv->beacon_period = bss->beacon_period; 3225 3226 if (priv->preamble != bss->preamble) { 3227 priv->preamble = bss->preamble; 3228 atmel_set_mib8(priv, Local_Mib_Type, 3229 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble); 3230 } 3231 3232 if (!priv->wep_is_on && bss->UsingWEP) { 3233 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3234 priv->station_is_associated = 0; 3235 return; 3236 } 3237 3238 if (priv->wep_is_on && !bss->UsingWEP) { 3239 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3240 priv->station_is_associated = 0; 3241 return; 3242 } 3243 3244 atmel_enter_state(priv, STATION_STATE_JOINNING); 3245 3246 if (priv->operating_mode == IW_MODE_INFRA) 3247 join(priv, BSS_TYPE_INFRASTRUCTURE); 3248 else 3249 join(priv, BSS_TYPE_AD_HOC); 3250 } 3251 3252 static void restart_search(struct atmel_private *priv) 3253 { 3254 int bss_index; 3255 3256 if (!priv->connect_to_any_BSS) { 3257 atmel_scan(priv, 1); 3258 } else { 3259 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80; 3260 3261 if ((bss_index = retrieve_bss(priv)) != -1) 3262 atmel_join_bss(priv, bss_index); 3263 else 3264 atmel_scan(priv, 0); 3265 } 3266 } 3267 3268 static void smooth_rssi(struct atmel_private *priv, u8 rssi) 3269 { 3270 u8 old = priv->wstats.qual.level; 3271 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */ 3272 3273 switch (priv->firmware_type) { 3274 case ATMEL_FW_TYPE_502E: 3275 max_rssi = 63; /* 502-rmfd-reve max by experiment */ 3276 break; 3277 default: 3278 break; 3279 } 3280 3281 rssi = rssi * 100 / max_rssi; 3282 if ((rssi + old) % 2) 3283 priv->wstats.qual.level = (rssi + old) / 2 + 1; 3284 else 3285 priv->wstats.qual.level = (rssi + old) / 2; 3286 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED; 3287 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID; 3288 } 3289 3290 static void atmel_smooth_qual(struct atmel_private *priv) 3291 { 3292 unsigned long time_diff = (jiffies - priv->last_qual) / HZ; 3293 while (time_diff--) { 3294 priv->last_qual += HZ; 3295 priv->wstats.qual.qual = priv->wstats.qual.qual / 2; 3296 priv->wstats.qual.qual += 3297 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000; 3298 priv->beacons_this_sec = 0; 3299 } 3300 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED; 3301 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID; 3302 } 3303 3304 /* deals with incoming management frames. */ 3305 static void atmel_management_frame(struct atmel_private *priv, 3306 struct ieee80211_hdr *header, 3307 u16 frame_len, u8 rssi) 3308 { 3309 u16 subtype; 3310 3311 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE; 3312 switch (subtype) { 3313 case IEEE80211_STYPE_BEACON: 3314 case IEEE80211_STYPE_PROBE_RESP: 3315 3316 /* beacon frame has multiple variable-length fields - 3317 never let an engineer loose with a data structure design. */ 3318 { 3319 struct beacon_format { 3320 __le64 timestamp; 3321 __le16 interval; 3322 __le16 capability; 3323 u8 ssid_el_id; 3324 u8 ssid_length; 3325 /* ssid here */ 3326 u8 rates_el_id; 3327 u8 rates_length; 3328 /* rates here */ 3329 u8 ds_el_id; 3330 u8 ds_length; 3331 /* ds here */ 3332 } *beacon = (struct beacon_format *)priv->rx_buf; 3333 3334 u8 channel, rates_length, ssid_length; 3335 u64 timestamp = le64_to_cpu(beacon->timestamp); 3336 u16 beacon_interval = le16_to_cpu(beacon->interval); 3337 u16 capability = le16_to_cpu(beacon->capability); 3338 u8 *beaconp = priv->rx_buf; 3339 ssid_length = beacon->ssid_length; 3340 /* this blows chunks. */ 3341 if (frame_len < 14 || frame_len < ssid_length + 15) 3342 return; 3343 rates_length = beaconp[beacon->ssid_length + 15]; 3344 if (frame_len < ssid_length + rates_length + 18) 3345 return; 3346 if (ssid_length > MAX_SSID_LENGTH) 3347 return; 3348 channel = beaconp[ssid_length + rates_length + 18]; 3349 3350 if (priv->station_state == STATION_STATE_READY) { 3351 smooth_rssi(priv, rssi); 3352 if (is_frame_from_current_bss(priv, header)) { 3353 priv->beacons_this_sec++; 3354 atmel_smooth_qual(priv); 3355 if (priv->last_beacon_timestamp) { 3356 /* Note truncate this to 32 bits - kernel can't divide a long long */ 3357 u32 beacon_delay = timestamp - priv->last_beacon_timestamp; 3358 int beacons = beacon_delay / (beacon_interval * 1000); 3359 if (beacons > 1) 3360 priv->wstats.miss.beacon += beacons - 1; 3361 } 3362 priv->last_beacon_timestamp = timestamp; 3363 handle_beacon_probe(priv, capability, channel); 3364 } 3365 } 3366 3367 if (priv->station_state == STATION_STATE_SCANNING) 3368 store_bss_info(priv, header, capability, 3369 beacon_interval, channel, rssi, 3370 ssid_length, 3371 &beacon->rates_el_id, 3372 subtype == IEEE80211_STYPE_BEACON); 3373 } 3374 break; 3375 3376 case IEEE80211_STYPE_AUTH: 3377 3378 if (priv->station_state == STATION_STATE_AUTHENTICATING) 3379 authenticate(priv, frame_len); 3380 3381 break; 3382 3383 case IEEE80211_STYPE_ASSOC_RESP: 3384 case IEEE80211_STYPE_REASSOC_RESP: 3385 3386 if (priv->station_state == STATION_STATE_ASSOCIATING || 3387 priv->station_state == STATION_STATE_REASSOCIATING) 3388 associate(priv, frame_len, subtype); 3389 3390 break; 3391 3392 case IEEE80211_STYPE_DISASSOC: 3393 if (priv->station_is_associated && 3394 priv->operating_mode == IW_MODE_INFRA && 3395 is_frame_from_current_bss(priv, header)) { 3396 priv->station_was_associated = 0; 3397 priv->station_is_associated = 0; 3398 3399 atmel_enter_state(priv, STATION_STATE_JOINNING); 3400 join(priv, BSS_TYPE_INFRASTRUCTURE); 3401 } 3402 3403 break; 3404 3405 case IEEE80211_STYPE_DEAUTH: 3406 if (priv->operating_mode == IW_MODE_INFRA && 3407 is_frame_from_current_bss(priv, header)) { 3408 priv->station_was_associated = 0; 3409 3410 atmel_enter_state(priv, STATION_STATE_JOINNING); 3411 join(priv, BSS_TYPE_INFRASTRUCTURE); 3412 } 3413 3414 break; 3415 } 3416 } 3417 3418 /* run when timer expires */ 3419 static void atmel_management_timer(struct timer_list *t) 3420 { 3421 struct atmel_private *priv = from_timer(priv, t, management_timer); 3422 unsigned long flags; 3423 3424 /* Check if the card has been yanked. */ 3425 if (priv->card && priv->present_callback && 3426 !(*priv->present_callback)(priv->card)) 3427 return; 3428 3429 spin_lock_irqsave(&priv->irqlock, flags); 3430 3431 switch (priv->station_state) { 3432 3433 case STATION_STATE_AUTHENTICATING: 3434 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) { 3435 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3436 priv->station_is_associated = 0; 3437 priv->AuthenticationRequestRetryCnt = 0; 3438 restart_search(priv); 3439 } else { 3440 int auth = WLAN_AUTH_OPEN; 3441 priv->AuthenticationRequestRetryCnt++; 3442 priv->CurrentAuthentTransactionSeqNum = 0x0001; 3443 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3444 if (priv->wep_is_on && priv->exclude_unencrypted) 3445 auth = WLAN_AUTH_SHARED_KEY; 3446 send_authentication_request(priv, auth, NULL, 0); 3447 } 3448 break; 3449 3450 case STATION_STATE_ASSOCIATING: 3451 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) { 3452 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3453 priv->station_is_associated = 0; 3454 priv->AssociationRequestRetryCnt = 0; 3455 restart_search(priv); 3456 } else { 3457 priv->AssociationRequestRetryCnt++; 3458 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3459 send_association_request(priv, 0); 3460 } 3461 break; 3462 3463 case STATION_STATE_REASSOCIATING: 3464 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) { 3465 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR); 3466 priv->station_is_associated = 0; 3467 priv->ReAssociationRequestRetryCnt = 0; 3468 restart_search(priv); 3469 } else { 3470 priv->ReAssociationRequestRetryCnt++; 3471 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3472 send_association_request(priv, 1); 3473 } 3474 break; 3475 3476 default: 3477 break; 3478 } 3479 3480 spin_unlock_irqrestore(&priv->irqlock, flags); 3481 } 3482 3483 static void atmel_command_irq(struct atmel_private *priv) 3484 { 3485 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET)); 3486 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET)); 3487 int fast_scan; 3488 union iwreq_data wrqu; 3489 3490 if (status == CMD_STATUS_IDLE || 3491 status == CMD_STATUS_IN_PROGRESS) 3492 return; 3493 3494 switch (command) { 3495 case CMD_Start: 3496 if (status == CMD_STATUS_COMPLETE) { 3497 priv->station_was_associated = priv->station_is_associated; 3498 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS, 3499 (u8 *)priv->CurrentBSSID, 6); 3500 atmel_enter_state(priv, STATION_STATE_READY); 3501 } 3502 break; 3503 3504 case CMD_Scan: 3505 fast_scan = priv->fast_scan; 3506 priv->fast_scan = 0; 3507 3508 if (status != CMD_STATUS_COMPLETE) { 3509 atmel_scan(priv, 1); 3510 } else { 3511 int bss_index = retrieve_bss(priv); 3512 int notify_scan_complete = 1; 3513 if (bss_index != -1) { 3514 atmel_join_bss(priv, bss_index); 3515 } else if (priv->operating_mode == IW_MODE_ADHOC && 3516 priv->SSID_size != 0) { 3517 start(priv, BSS_TYPE_AD_HOC); 3518 } else { 3519 priv->fast_scan = !fast_scan; 3520 atmel_scan(priv, 1); 3521 notify_scan_complete = 0; 3522 } 3523 priv->site_survey_state = SITE_SURVEY_COMPLETED; 3524 if (notify_scan_complete) { 3525 wrqu.data.length = 0; 3526 wrqu.data.flags = 0; 3527 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); 3528 } 3529 } 3530 break; 3531 3532 case CMD_SiteSurvey: 3533 priv->fast_scan = 0; 3534 3535 if (status != CMD_STATUS_COMPLETE) 3536 return; 3537 3538 priv->site_survey_state = SITE_SURVEY_COMPLETED; 3539 if (priv->station_is_associated) { 3540 atmel_enter_state(priv, STATION_STATE_READY); 3541 wrqu.data.length = 0; 3542 wrqu.data.flags = 0; 3543 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); 3544 } else { 3545 atmel_scan(priv, 1); 3546 } 3547 break; 3548 3549 case CMD_Join: 3550 if (status == CMD_STATUS_COMPLETE) { 3551 if (priv->operating_mode == IW_MODE_ADHOC) { 3552 priv->station_was_associated = priv->station_is_associated; 3553 atmel_enter_state(priv, STATION_STATE_READY); 3554 } else { 3555 int auth = WLAN_AUTH_OPEN; 3556 priv->AuthenticationRequestRetryCnt = 0; 3557 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING); 3558 3559 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); 3560 priv->CurrentAuthentTransactionSeqNum = 0x0001; 3561 if (priv->wep_is_on && priv->exclude_unencrypted) 3562 auth = WLAN_AUTH_SHARED_KEY; 3563 send_authentication_request(priv, auth, NULL, 0); 3564 } 3565 return; 3566 } 3567 3568 atmel_scan(priv, 1); 3569 } 3570 } 3571 3572 static int atmel_wakeup_firmware(struct atmel_private *priv) 3573 { 3574 struct host_info_struct *iface = &priv->host_info; 3575 u16 mr1, mr3; 3576 int i; 3577 3578 if (priv->card_type == CARD_TYPE_SPI_FLASH) 3579 atmel_set_gcr(priv->dev, GCR_REMAP); 3580 3581 /* wake up on-board processor */ 3582 atmel_clear_gcr(priv->dev, 0x0040); 3583 atmel_write16(priv->dev, BSR, BSS_SRAM); 3584 3585 if (priv->card_type == CARD_TYPE_SPI_FLASH) 3586 mdelay(100); 3587 3588 /* and wait for it */ 3589 for (i = LOOP_RETRY_LIMIT; i; i--) { 3590 mr1 = atmel_read16(priv->dev, MR1); 3591 mr3 = atmel_read16(priv->dev, MR3); 3592 3593 if (mr3 & MAC_BOOT_COMPLETE) 3594 break; 3595 if (mr1 & MAC_BOOT_COMPLETE && 3596 priv->bus_type == BUS_TYPE_PCCARD) 3597 break; 3598 } 3599 3600 if (i == 0) { 3601 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name); 3602 return -EIO; 3603 } 3604 3605 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) { 3606 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name); 3607 return -ENODEV; 3608 } 3609 3610 /* now check for completion of MAC initialization through 3611 the FunCtrl field of the IFACE, poll MR1 to detect completion of 3612 MAC initialization, check completion status, set interrupt mask, 3613 enables interrupts and calls Tx and Rx initialization functions */ 3614 3615 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE); 3616 3617 for (i = LOOP_RETRY_LIMIT; i; i--) { 3618 mr1 = atmel_read16(priv->dev, MR1); 3619 mr3 = atmel_read16(priv->dev, MR3); 3620 3621 if (mr3 & MAC_INIT_COMPLETE) 3622 break; 3623 if (mr1 & MAC_INIT_COMPLETE && 3624 priv->bus_type == BUS_TYPE_PCCARD) 3625 break; 3626 } 3627 3628 if (i == 0) { 3629 printk(KERN_ALERT "%s: MAC failed to initialise.\n", 3630 priv->dev->name); 3631 return -EIO; 3632 } 3633 3634 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */ 3635 if ((mr3 & MAC_INIT_COMPLETE) && 3636 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) { 3637 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name); 3638 return -EIO; 3639 } 3640 if ((mr1 & MAC_INIT_COMPLETE) && 3641 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) { 3642 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name); 3643 return -EIO; 3644 } 3645 3646 atmel_copy_to_host(priv->dev, (unsigned char *)iface, 3647 priv->host_info_base, sizeof(*iface)); 3648 3649 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos); 3650 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size); 3651 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos); 3652 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count); 3653 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos); 3654 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size); 3655 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos); 3656 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count); 3657 iface->build_version = le16_to_cpu(iface->build_version); 3658 iface->command_pos = le16_to_cpu(iface->command_pos); 3659 iface->major_version = le16_to_cpu(iface->major_version); 3660 iface->minor_version = le16_to_cpu(iface->minor_version); 3661 iface->func_ctrl = le16_to_cpu(iface->func_ctrl); 3662 iface->mac_status = le16_to_cpu(iface->mac_status); 3663 3664 return 0; 3665 } 3666 3667 /* determine type of memory and MAC address */ 3668 static int probe_atmel_card(struct net_device *dev) 3669 { 3670 int rc = 0; 3671 struct atmel_private *priv = netdev_priv(dev); 3672 3673 /* reset pccard */ 3674 if (priv->bus_type == BUS_TYPE_PCCARD) 3675 atmel_write16(dev, GCR, 0x0060); 3676 3677 atmel_write16(dev, GCR, 0x0040); 3678 mdelay(500); 3679 3680 if (atmel_read16(dev, MR2) == 0) { 3681 /* No stored firmware so load a small stub which just 3682 tells us the MAC address */ 3683 int i; 3684 priv->card_type = CARD_TYPE_EEPROM; 3685 atmel_write16(dev, BSR, BSS_IRAM); 3686 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader)); 3687 atmel_set_gcr(dev, GCR_REMAP); 3688 atmel_clear_gcr(priv->dev, 0x0040); 3689 atmel_write16(dev, BSR, BSS_SRAM); 3690 for (i = LOOP_RETRY_LIMIT; i; i--) 3691 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE) 3692 break; 3693 if (i == 0) { 3694 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name); 3695 } else { 3696 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6); 3697 /* got address, now squash it again until the network 3698 interface is opened */ 3699 if (priv->bus_type == BUS_TYPE_PCCARD) 3700 atmel_write16(dev, GCR, 0x0060); 3701 atmel_write16(dev, GCR, 0x0040); 3702 rc = 1; 3703 } 3704 } else if (atmel_read16(dev, MR4) == 0) { 3705 /* Mac address easy in this case. */ 3706 priv->card_type = CARD_TYPE_PARALLEL_FLASH; 3707 atmel_write16(dev, BSR, 1); 3708 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6); 3709 atmel_write16(dev, BSR, 0x200); 3710 rc = 1; 3711 } else { 3712 /* Standard firmware in flash, boot it up and ask 3713 for the Mac Address */ 3714 priv->card_type = CARD_TYPE_SPI_FLASH; 3715 if (atmel_wakeup_firmware(priv) == 0) { 3716 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6); 3717 3718 /* got address, now squash it again until the network 3719 interface is opened */ 3720 if (priv->bus_type == BUS_TYPE_PCCARD) 3721 atmel_write16(dev, GCR, 0x0060); 3722 atmel_write16(dev, GCR, 0x0040); 3723 rc = 1; 3724 } 3725 } 3726 3727 if (rc) { 3728 if (dev->dev_addr[0] == 0xFF) { 3729 static const u8 default_mac[] = { 3730 0x00, 0x04, 0x25, 0x00, 0x00, 0x00 3731 }; 3732 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name); 3733 memcpy(dev->dev_addr, default_mac, ETH_ALEN); 3734 } 3735 } 3736 3737 return rc; 3738 } 3739 3740 /* Move the encyption information on the MIB structure. 3741 This routine is for the pre-WPA firmware: later firmware has 3742 a different format MIB and a different routine. */ 3743 static void build_wep_mib(struct atmel_private *priv) 3744 { 3745 struct { /* NB this is matched to the hardware, don't change. */ 3746 u8 wep_is_on; 3747 u8 default_key; /* 0..3 */ 3748 u8 reserved; 3749 u8 exclude_unencrypted; 3750 3751 u32 WEPICV_error_count; 3752 u32 WEP_excluded_count; 3753 3754 u8 wep_keys[MAX_ENCRYPTION_KEYS][13]; 3755 u8 encryption_level; /* 0, 1, 2 */ 3756 u8 reserved2[3]; 3757 } mib; 3758 int i; 3759 3760 mib.wep_is_on = priv->wep_is_on; 3761 if (priv->wep_is_on) { 3762 if (priv->wep_key_len[priv->default_key] > 5) 3763 mib.encryption_level = 2; 3764 else 3765 mib.encryption_level = 1; 3766 } else { 3767 mib.encryption_level = 0; 3768 } 3769 3770 mib.default_key = priv->default_key; 3771 mib.exclude_unencrypted = priv->exclude_unencrypted; 3772 3773 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) 3774 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13); 3775 3776 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib)); 3777 } 3778 3779 static void build_wpa_mib(struct atmel_private *priv) 3780 { 3781 /* This is for the later (WPA enabled) firmware. */ 3782 3783 struct { /* NB this is matched to the hardware, don't change. */ 3784 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE]; 3785 u8 receiver_address[ETH_ALEN]; 3786 u8 wep_is_on; 3787 u8 default_key; /* 0..3 */ 3788 u8 group_key; 3789 u8 exclude_unencrypted; 3790 u8 encryption_type; 3791 u8 reserved; 3792 3793 u32 WEPICV_error_count; 3794 u32 WEP_excluded_count; 3795 3796 u8 key_RSC[4][8]; 3797 } mib; 3798 3799 int i; 3800 3801 mib.wep_is_on = priv->wep_is_on; 3802 mib.exclude_unencrypted = priv->exclude_unencrypted; 3803 memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN); 3804 3805 /* zero all the keys before adding in valid ones. */ 3806 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value)); 3807 3808 if (priv->wep_is_on) { 3809 /* There's a comment in the Atmel code to the effect that this 3810 is only valid when still using WEP, it may need to be set to 3811 something to use WPA */ 3812 memset(mib.key_RSC, 0, sizeof(mib.key_RSC)); 3813 3814 mib.default_key = mib.group_key = 255; 3815 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) { 3816 if (priv->wep_key_len[i] > 0) { 3817 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE); 3818 if (i == priv->default_key) { 3819 mib.default_key = i; 3820 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7; 3821 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite; 3822 } else { 3823 mib.group_key = i; 3824 priv->group_cipher_suite = priv->pairwise_cipher_suite; 3825 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1; 3826 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite; 3827 } 3828 } 3829 } 3830 if (mib.default_key == 255) 3831 mib.default_key = mib.group_key != 255 ? mib.group_key : 0; 3832 if (mib.group_key == 255) 3833 mib.group_key = mib.default_key; 3834 3835 } 3836 3837 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib)); 3838 } 3839 3840 static int reset_atmel_card(struct net_device *dev) 3841 { 3842 /* do everything necessary to wake up the hardware, including 3843 waiting for the lightning strike and throwing the knife switch.... 3844 3845 set all the Mib values which matter in the card to match 3846 their settings in the atmel_private structure. Some of these 3847 can be altered on the fly, but many (WEP, infrastructure or ad-hoc) 3848 can only be changed by tearing down the world and coming back through 3849 here. 3850 3851 This routine is also responsible for initialising some 3852 hardware-specific fields in the atmel_private structure, 3853 including a copy of the firmware's hostinfo structure 3854 which is the route into the rest of the firmware datastructures. */ 3855 3856 struct atmel_private *priv = netdev_priv(dev); 3857 u8 configuration; 3858 int old_state = priv->station_state; 3859 int err = 0; 3860 3861 /* data to add to the firmware names, in priority order 3862 this implemenents firmware versioning */ 3863 3864 static char *firmware_modifier[] = { 3865 "-wpa", 3866 "", 3867 NULL 3868 }; 3869 3870 /* reset pccard */ 3871 if (priv->bus_type == BUS_TYPE_PCCARD) 3872 atmel_write16(priv->dev, GCR, 0x0060); 3873 3874 /* stop card , disable interrupts */ 3875 atmel_write16(priv->dev, GCR, 0x0040); 3876 3877 if (priv->card_type == CARD_TYPE_EEPROM) { 3878 /* copy in firmware if needed */ 3879 const struct firmware *fw_entry = NULL; 3880 const unsigned char *fw; 3881 int len = priv->firmware_length; 3882 if (!(fw = priv->firmware)) { 3883 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) { 3884 if (strlen(priv->firmware_id) == 0) { 3885 printk(KERN_INFO 3886 "%s: card type is unknown: assuming at76c502 firmware is OK.\n", 3887 dev->name); 3888 printk(KERN_INFO 3889 "%s: if not, use the firmware= module parameter.\n", 3890 dev->name); 3891 strcpy(priv->firmware_id, "atmel_at76c502.bin"); 3892 } 3893 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev); 3894 if (err != 0) { 3895 printk(KERN_ALERT 3896 "%s: firmware %s is missing, cannot continue.\n", 3897 dev->name, priv->firmware_id); 3898 return err; 3899 } 3900 } else { 3901 int fw_index = 0; 3902 int success = 0; 3903 3904 /* get firmware filename entry based on firmware type ID */ 3905 while (fw_table[fw_index].fw_type != priv->firmware_type 3906 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) 3907 fw_index++; 3908 3909 /* construct the actual firmware file name */ 3910 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) { 3911 int i; 3912 for (i = 0; firmware_modifier[i]; i++) { 3913 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file, 3914 firmware_modifier[i], fw_table[fw_index].fw_file_ext); 3915 priv->firmware_id[31] = '\0'; 3916 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) { 3917 success = 1; 3918 break; 3919 } 3920 } 3921 } 3922 if (!success) { 3923 printk(KERN_ALERT 3924 "%s: firmware %s is missing, cannot start.\n", 3925 dev->name, priv->firmware_id); 3926 priv->firmware_id[0] = '\0'; 3927 return -ENOENT; 3928 } 3929 } 3930 3931 fw = fw_entry->data; 3932 len = fw_entry->size; 3933 } 3934 3935 if (len <= 0x6000) { 3936 atmel_write16(priv->dev, BSR, BSS_IRAM); 3937 atmel_copy_to_card(priv->dev, 0, fw, len); 3938 atmel_set_gcr(priv->dev, GCR_REMAP); 3939 } else { 3940 /* Remap */ 3941 atmel_set_gcr(priv->dev, GCR_REMAP); 3942 atmel_write16(priv->dev, BSR, BSS_IRAM); 3943 atmel_copy_to_card(priv->dev, 0, fw, 0x6000); 3944 atmel_write16(priv->dev, BSR, 0x2ff); 3945 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000); 3946 } 3947 3948 release_firmware(fw_entry); 3949 } 3950 3951 err = atmel_wakeup_firmware(priv); 3952 if (err != 0) 3953 return err; 3954 3955 /* Check the version and set the correct flag for wpa stuff, 3956 old and new firmware is incompatible. 3957 The pre-wpa 3com firmware reports major version 5, 3958 the wpa 3com firmware is major version 4 and doesn't need 3959 the 3com broken-ness filter. */ 3960 priv->use_wpa = (priv->host_info.major_version == 4); 3961 priv->radio_on_broken = (priv->host_info.major_version == 5); 3962 3963 /* unmask all irq sources */ 3964 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff); 3965 3966 /* int Tx system and enable Tx */ 3967 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0); 3968 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L); 3969 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0); 3970 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0); 3971 3972 priv->tx_desc_free = priv->host_info.tx_desc_count; 3973 priv->tx_desc_head = 0; 3974 priv->tx_desc_tail = 0; 3975 priv->tx_desc_previous = 0; 3976 priv->tx_free_mem = priv->host_info.tx_buff_size; 3977 priv->tx_buff_head = 0; 3978 priv->tx_buff_tail = 0; 3979 3980 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET)); 3981 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), 3982 configuration | FUNC_CTRL_TxENABLE); 3983 3984 /* init Rx system and enable */ 3985 priv->rx_desc_head = 0; 3986 3987 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET)); 3988 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), 3989 configuration | FUNC_CTRL_RxENABLE); 3990 3991 if (!priv->radio_on_broken) { 3992 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) == 3993 CMD_STATUS_REJECTED_RADIO_OFF) { 3994 printk(KERN_INFO "%s: cannot turn the radio on.\n", 3995 dev->name); 3996 return -EIO; 3997 } 3998 } 3999 4000 /* set up enough MIB values to run. */ 4001 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate); 4002 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF); 4003 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold); 4004 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold); 4005 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry); 4006 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry); 4007 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble); 4008 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS, 4009 priv->dev->dev_addr, 6); 4010 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE); 4011 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1); 4012 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period); 4013 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4); 4014 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on); 4015 if (priv->use_wpa) 4016 build_wpa_mib(priv); 4017 else 4018 build_wep_mib(priv); 4019 4020 if (old_state == STATION_STATE_READY) { 4021 union iwreq_data wrqu; 4022 4023 wrqu.data.length = 0; 4024 wrqu.data.flags = 0; 4025 wrqu.ap_addr.sa_family = ARPHRD_ETHER; 4026 eth_zero_addr(wrqu.ap_addr.sa_data); 4027 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); 4028 } 4029 4030 return 0; 4031 } 4032 4033 static void atmel_send_command(struct atmel_private *priv, int command, 4034 void *cmd, int cmd_size) 4035 { 4036 if (cmd) 4037 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET), 4038 cmd, cmd_size); 4039 4040 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command); 4041 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0); 4042 } 4043 4044 static int atmel_send_command_wait(struct atmel_private *priv, int command, 4045 void *cmd, int cmd_size) 4046 { 4047 int i, status; 4048 4049 atmel_send_command(priv, command, cmd, cmd_size); 4050 4051 for (i = 5000; i; i--) { 4052 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET)); 4053 if (status != CMD_STATUS_IDLE && 4054 status != CMD_STATUS_IN_PROGRESS) 4055 break; 4056 udelay(20); 4057 } 4058 4059 if (i == 0) { 4060 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name); 4061 status = CMD_STATUS_HOST_ERROR; 4062 } else { 4063 if (command != CMD_EnableRadio) 4064 status = CMD_STATUS_COMPLETE; 4065 } 4066 4067 return status; 4068 } 4069 4070 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index) 4071 { 4072 struct get_set_mib m; 4073 m.type = type; 4074 m.size = 1; 4075 m.index = index; 4076 4077 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1); 4078 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE)); 4079 } 4080 4081 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data) 4082 { 4083 struct get_set_mib m; 4084 m.type = type; 4085 m.size = 1; 4086 m.index = index; 4087 m.data[0] = data; 4088 4089 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1); 4090 } 4091 4092 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, 4093 u16 data) 4094 { 4095 struct get_set_mib m; 4096 m.type = type; 4097 m.size = 2; 4098 m.index = index; 4099 m.data[0] = data; 4100 m.data[1] = data >> 8; 4101 4102 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2); 4103 } 4104 4105 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, 4106 u8 *data, int data_len) 4107 { 4108 struct get_set_mib m; 4109 m.type = type; 4110 m.size = data_len; 4111 m.index = index; 4112 4113 if (data_len > MIB_MAX_DATA_BYTES) 4114 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name); 4115 4116 memcpy(m.data, data, data_len); 4117 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len); 4118 } 4119 4120 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, 4121 u8 *data, int data_len) 4122 { 4123 struct get_set_mib m; 4124 m.type = type; 4125 m.size = data_len; 4126 m.index = index; 4127 4128 if (data_len > MIB_MAX_DATA_BYTES) 4129 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name); 4130 4131 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len); 4132 atmel_copy_to_host(priv->dev, data, 4133 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len); 4134 } 4135 4136 static void atmel_writeAR(struct net_device *dev, u16 data) 4137 { 4138 int i; 4139 outw(data, dev->base_addr + AR); 4140 /* Address register appears to need some convincing..... */ 4141 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++) 4142 outw(data, dev->base_addr + AR); 4143 } 4144 4145 static void atmel_copy_to_card(struct net_device *dev, u16 dest, 4146 const unsigned char *src, u16 len) 4147 { 4148 int i; 4149 atmel_writeAR(dev, dest); 4150 if (dest % 2) { 4151 atmel_write8(dev, DR, *src); 4152 src++; len--; 4153 } 4154 for (i = len; i > 1 ; i -= 2) { 4155 u8 lb = *src++; 4156 u8 hb = *src++; 4157 atmel_write16(dev, DR, lb | (hb << 8)); 4158 } 4159 if (i) 4160 atmel_write8(dev, DR, *src); 4161 } 4162 4163 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, 4164 u16 src, u16 len) 4165 { 4166 int i; 4167 atmel_writeAR(dev, src); 4168 if (src % 2) { 4169 *dest = atmel_read8(dev, DR); 4170 dest++; len--; 4171 } 4172 for (i = len; i > 1 ; i -= 2) { 4173 u16 hw = atmel_read16(dev, DR); 4174 *dest++ = hw; 4175 *dest++ = hw >> 8; 4176 } 4177 if (i) 4178 *dest = atmel_read8(dev, DR); 4179 } 4180 4181 static void atmel_set_gcr(struct net_device *dev, u16 mask) 4182 { 4183 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR); 4184 } 4185 4186 static void atmel_clear_gcr(struct net_device *dev, u16 mask) 4187 { 4188 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR); 4189 } 4190 4191 static int atmel_lock_mac(struct atmel_private *priv) 4192 { 4193 int i, j = 20; 4194 retry: 4195 for (i = 5000; i; i--) { 4196 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) 4197 break; 4198 udelay(20); 4199 } 4200 4201 if (!i) 4202 return 0; /* timed out */ 4203 4204 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1); 4205 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) { 4206 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0); 4207 if (!j--) 4208 return 0; /* timed out */ 4209 goto retry; 4210 } 4211 4212 return 1; 4213 } 4214 4215 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data) 4216 { 4217 atmel_writeAR(priv->dev, pos); 4218 atmel_write16(priv->dev, DR, data); /* card is little-endian */ 4219 atmel_write16(priv->dev, DR, data >> 16); 4220 } 4221 4222 /***************************************************************************/ 4223 /* There follows the source form of the MAC address reading firmware */ 4224 /***************************************************************************/ 4225 #if 0 4226 4227 /* Copyright 2003 Matthew T. Russotto */ 4228 /* But derived from the Atmel 76C502 firmware written by Atmel and */ 4229 /* included in "atmel wireless lan drivers" package */ 4230 /** 4231 This file is part of net.russotto.AtmelMACFW, hereto referred to 4232 as AtmelMACFW 4233 4234 AtmelMACFW is free software; you can redistribute it and/or modify 4235 it under the terms of the GNU General Public License version 2 4236 as published by the Free Software Foundation. 4237 4238 AtmelMACFW is distributed in the hope that it will be useful, 4239 but WITHOUT ANY WARRANTY; without even the implied warranty of 4240 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 4241 GNU General Public License for more details. 4242 4243 You should have received a copy of the GNU General Public License 4244 along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>. 4245 4246 ****************************************************************************/ 4247 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */ 4248 /* It will probably work on the 76C504 and 76C502 RFMD_3COM */ 4249 /* It only works on SPI EEPROM versions of the card. */ 4250 4251 /* This firmware initializes the SPI controller and clock, reads the MAC */ 4252 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */ 4253 /* address in MR2, and sets MR3 to 0x10 to indicate it is done */ 4254 /* It also puts a complete copy of the EEPROM in SRAM with the offset in */ 4255 /* MR4, for investigational purposes (maybe we can determine chip type */ 4256 /* from that?) */ 4257 4258 .org 0 4259 .set MRBASE, 0x8000000 4260 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */ 4261 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */ 4262 .set SRAM_BASE, 0x02000000 4263 .set SP_BASE, 0x0F300000 4264 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */ 4265 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */ 4266 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */ 4267 .set STACK_BASE, 0x5600 4268 .set SP_SR, 0x10 4269 .set SP_TDRE, 2 /* status register bit -- TDR empty */ 4270 .set SP_RDRF, 1 /* status register bit -- RDR full */ 4271 .set SP_SWRST, 0x80 4272 .set SP_SPIEN, 0x1 4273 .set SP_CR, 0 /* control register */ 4274 .set SP_MR, 4 /* mode register */ 4275 .set SP_RDR, 0x08 /* Read Data Register */ 4276 .set SP_TDR, 0x0C /* Transmit Data Register */ 4277 .set SP_CSR0, 0x30 /* chip select registers */ 4278 .set SP_CSR1, 0x34 4279 .set SP_CSR2, 0x38 4280 .set SP_CSR3, 0x3C 4281 .set NVRAM_CMD_RDSR, 5 /* read status register */ 4282 .set NVRAM_CMD_READ, 3 /* read data */ 4283 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */ 4284 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the 4285 serial output, since SO is normally high. But it 4286 does cause 8 clock cycles and thus 8 bits to be 4287 clocked in to the chip. See Atmel's SPI 4288 controller (e.g. AT91M55800) timing and 4K 4289 SPI EEPROM manuals */ 4290 4291 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */ 4292 .set NVRAM_IMAGE, 0x02000200 4293 .set NVRAM_LENGTH, 0x0200 4294 .set MAC_ADDRESS_MIB, SRAM_BASE 4295 .set MAC_ADDRESS_LENGTH, 6 4296 .set MAC_BOOT_FLAG, 0x10 4297 .set MR1, 0 4298 .set MR2, 4 4299 .set MR3, 8 4300 .set MR4, 0xC 4301 RESET_VECTOR: 4302 b RESET_HANDLER 4303 UNDEF_VECTOR: 4304 b HALT1 4305 SWI_VECTOR: 4306 b HALT1 4307 IABORT_VECTOR: 4308 b HALT1 4309 DABORT_VECTOR: 4310 RESERVED_VECTOR: 4311 b HALT1 4312 IRQ_VECTOR: 4313 b HALT1 4314 FIQ_VECTOR: 4315 b HALT1 4316 HALT1: b HALT1 4317 RESET_HANDLER: 4318 mov r0, #CPSR_INITIAL 4319 msr CPSR_c, r0 /* This is probably unnecessary */ 4320 4321 /* I'm guessing this is initializing clock generator electronics for SPI */ 4322 ldr r0, =SPI_CGEN_BASE 4323 mov r1, #0 4324 mov r1, r1, lsl #3 4325 orr r1, r1, #0 4326 str r1, [r0] 4327 ldr r1, [r0, #28] 4328 bic r1, r1, #16 4329 str r1, [r0, #28] 4330 mov r1, #1 4331 str r1, [r0, #8] 4332 4333 ldr r0, =MRBASE 4334 mov r1, #0 4335 strh r1, [r0, #MR1] 4336 strh r1, [r0, #MR2] 4337 strh r1, [r0, #MR3] 4338 strh r1, [r0, #MR4] 4339 4340 mov sp, #STACK_BASE 4341 bl SP_INIT 4342 mov r0, #10 4343 bl DELAY9 4344 bl GET_MAC_ADDR 4345 bl GET_WHOLE_NVRAM 4346 ldr r0, =MRBASE 4347 ldr r1, =MAC_ADDRESS_MIB 4348 strh r1, [r0, #MR2] 4349 ldr r1, =NVRAM_IMAGE 4350 strh r1, [r0, #MR4] 4351 mov r1, #MAC_BOOT_FLAG 4352 strh r1, [r0, #MR3] 4353 HALT2: b HALT2 4354 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM 4355 GET_WHOLE_NVRAM: 4356 stmdb sp!, {lr} 4357 mov r2, #0 /* 0th bytes of NVRAM */ 4358 mov r3, #NVRAM_LENGTH 4359 mov r1, #0 /* not used in routine */ 4360 ldr r0, =NVRAM_IMAGE 4361 bl NVRAM_XFER 4362 ldmia sp!, {lr} 4363 bx lr 4364 .endfunc 4365 4366 .func Get_MAC_Addr, GET_MAC_ADDR 4367 GET_MAC_ADDR: 4368 stmdb sp!, {lr} 4369 mov r2, #0x120 /* address of MAC Address within NVRAM */ 4370 mov r3, #MAC_ADDRESS_LENGTH 4371 mov r1, #0 /* not used in routine */ 4372 ldr r0, =MAC_ADDRESS_MIB 4373 bl NVRAM_XFER 4374 ldmia sp!, {lr} 4375 bx lr 4376 .endfunc 4377 .ltorg 4378 .func Delay9, DELAY9 4379 DELAY9: 4380 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */ 4381 DELAYLOOP: 4382 beq DELAY9_done 4383 subs r0, r0, #1 4384 b DELAYLOOP 4385 DELAY9_done: 4386 bx lr 4387 .endfunc 4388 4389 .func SP_Init, SP_INIT 4390 SP_INIT: 4391 mov r1, #SP_SWRST 4392 ldr r0, =SP_BASE 4393 str r1, [r0, #SP_CR] /* reset the SPI */ 4394 mov r1, #0 4395 str r1, [r0, #SP_CR] /* release SPI from reset state */ 4396 mov r1, #SP_SPIEN 4397 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/ 4398 str r1, [r0, #SP_CR] /* enable the SPI */ 4399 4400 /* My guess would be this turns on the SPI clock */ 4401 ldr r3, =SPI_CGEN_BASE 4402 ldr r1, [r3, #28] 4403 orr r1, r1, #0x2000 4404 str r1, [r3, #28] 4405 4406 ldr r1, =0x2000c01 4407 str r1, [r0, #SP_CSR0] 4408 ldr r1, =0x2000201 4409 str r1, [r0, #SP_CSR1] 4410 str r1, [r0, #SP_CSR2] 4411 str r1, [r0, #SP_CSR3] 4412 ldr r1, [r0, #SP_SR] 4413 ldr r0, [r0, #SP_RDR] 4414 bx lr 4415 .endfunc 4416 .func NVRAM_Init, NVRAM_INIT 4417 NVRAM_INIT: 4418 ldr r1, =SP_BASE 4419 ldr r0, [r1, #SP_RDR] 4420 mov r0, #NVRAM_CMD_RDSR 4421 str r0, [r1, #SP_TDR] 4422 SP_loop1: 4423 ldr r0, [r1, #SP_SR] 4424 tst r0, #SP_TDRE 4425 beq SP_loop1 4426 4427 mov r0, #SPI_8CLOCKS 4428 str r0, [r1, #SP_TDR] 4429 SP_loop2: 4430 ldr r0, [r1, #SP_SR] 4431 tst r0, #SP_TDRE 4432 beq SP_loop2 4433 4434 ldr r0, [r1, #SP_RDR] 4435 SP_loop3: 4436 ldr r0, [r1, #SP_SR] 4437 tst r0, #SP_RDRF 4438 beq SP_loop3 4439 4440 ldr r0, [r1, #SP_RDR] 4441 and r0, r0, #255 4442 bx lr 4443 .endfunc 4444 4445 .func NVRAM_Xfer, NVRAM_XFER 4446 /* r0 = dest address */ 4447 /* r1 = not used */ 4448 /* r2 = src address within NVRAM */ 4449 /* r3 = length */ 4450 NVRAM_XFER: 4451 stmdb sp!, {r4, r5, lr} 4452 mov r5, r0 /* save r0 (dest address) */ 4453 mov r4, r3 /* save r3 (length) */ 4454 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */ 4455 and r0, r0, #8 4456 add r0, r0, #NVRAM_CMD_READ 4457 ldr r1, =NVRAM_SCRATCH 4458 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */ 4459 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */ 4460 _local1: 4461 bl NVRAM_INIT 4462 tst r0, #NVRAM_SR_RDY 4463 bne _local1 4464 mov r0, #20 4465 bl DELAY9 4466 mov r2, r4 /* length */ 4467 mov r1, r5 /* dest address */ 4468 mov r0, #2 /* bytes to transfer in command */ 4469 bl NVRAM_XFER2 4470 ldmia sp!, {r4, r5, lr} 4471 bx lr 4472 .endfunc 4473 4474 .func NVRAM_Xfer2, NVRAM_XFER2 4475 NVRAM_XFER2: 4476 stmdb sp!, {r4, r5, r6, lr} 4477 ldr r4, =SP_BASE 4478 mov r3, #0 4479 cmp r0, #0 4480 bls _local2 4481 ldr r5, =NVRAM_SCRATCH 4482 _local4: 4483 ldrb r6, [r5, r3] 4484 str r6, [r4, #SP_TDR] 4485 _local3: 4486 ldr r6, [r4, #SP_SR] 4487 tst r6, #SP_TDRE 4488 beq _local3 4489 add r3, r3, #1 4490 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */ 4491 blo _local4 4492 _local2: 4493 mov r3, #SPI_8CLOCKS 4494 str r3, [r4, #SP_TDR] 4495 ldr r0, [r4, #SP_RDR] 4496 _local5: 4497 ldr r0, [r4, #SP_SR] 4498 tst r0, #SP_RDRF 4499 beq _local5 4500 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 */ 4501 mov r0, #0 4502 cmp r2, #0 /* r2 is # of bytes to copy in */ 4503 bls _local6 4504 _local7: 4505 ldr r5, [r4, #SP_SR] 4506 tst r5, #SP_TDRE 4507 beq _local7 4508 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */ 4509 _local8: 4510 ldr r5, [r4, #SP_SR] 4511 tst r5, #SP_RDRF 4512 beq _local8 4513 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */ 4514 strb r5, [r1], #1 /* postindexed */ 4515 add r0, r0, #1 4516 cmp r0, r2 4517 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */ 4518 _local6: 4519 mov r0, #200 4520 bl DELAY9 4521 ldmia sp!, {r4, r5, r6, lr} 4522 bx lr 4523 #endif 4524