1 /*** -*- linux-c -*- **********************************************************
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003-2004 Simon Kelley.
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.
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.
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.
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.
30 You should have received a copy of the GNU General Public License
31 along with Atmel wireless lan drivers; if not, write to the Free Software
32 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 For all queries about this code, please contact the current author,
35 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
37 Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
38 hardware used during development of this driver.
40 ******************************************************************************/
42 #include <linux/config.h>
43 #include <linux/init.h>
45 #include <linux/kernel.h>
46 #include <linux/sched.h>
47 #include <linux/ptrace.h>
48 #include <linux/slab.h>
49 #include <linux/string.h>
50 #include <linux/ctype.h>
51 #include <linux/timer.h>
53 #include <asm/system.h>
54 #include <asm/uaccess.h>
55 #include <linux/module.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/if_arp.h>
60 #include <linux/ioport.h>
61 #include <linux/fcntl.h>
62 #include <linux/delay.h>
63 #include <linux/wireless.h>
64 #include <net/iw_handler.h>
65 #include <linux/byteorder/generic.h>
66 #include <linux/crc32.h>
67 #include <linux/proc_fs.h>
68 #include <linux/device.h>
69 #include <linux/moduleparam.h>
70 #include <linux/firmware.h>
71 #include "ieee802_11.h"
73 #define DRIVER_MAJOR 0
74 #define DRIVER_MINOR 96
76 MODULE_AUTHOR("Simon Kelley");
77 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
78 MODULE_LICENSE("GPL");
79 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
81 /* The name of the firmware file to be loaded
82 over-rides any automatic selection */
83 static char *firmware = NULL;
84 module_param(firmware, charp, 0);
86 #define MAX_SSID_LENGTH 32
87 #define MGMT_JIFFIES (256 * HZ / 100)
89 #define MAX_BSS_ENTRIES 64
92 #define GCR 0x00 // (SIR0) General Configuration Register
93 #define BSR 0x02 // (SIR1) Bank Switching Select Register
96 #define MR1 0x12 // Mirror Register 1
97 #define MR2 0x14 // Mirror Register 2
98 #define MR3 0x16 // Mirror Register 3
99 #define MR4 0x18 // Mirror Register 4
105 // Constants for the GCR register.
107 #define GCR_REMAP 0x0400 // Remap internal SRAM to 0
108 #define GCR_SWRES 0x0080 // BIU reset (ARM and PAI are NOT reset)
109 #define GCR_CORES 0x0060 // Core Reset (ARM and PAI are reset)
110 #define GCR_ENINT 0x0002 // Enable Interrupts
111 #define GCR_ACKINT 0x0008 // Acknowledge Interrupts
113 #define BSS_SRAM 0x0200 // AMBA module selection --> SRAM
114 #define BSS_IRAM 0x0100 // AMBA module selection --> IRAM
116 // Constants for the MR registers.
118 #define MAC_INIT_COMPLETE 0x0001 // MAC init has been completed
119 #define MAC_BOOT_COMPLETE 0x0010 // MAC boot has been completed
120 #define MAC_INIT_OK 0x0002 // MAC boot has been completed
122 #define C80211_SUBTYPE_MGMT_ASS_REQUEST 0x00
123 #define C80211_SUBTYPE_MGMT_ASS_RESPONSE 0x10
124 #define C80211_SUBTYPE_MGMT_REASS_REQUEST 0x20
125 #define C80211_SUBTYPE_MGMT_REASS_RESPONSE 0x30
126 #define C80211_SUBTYPE_MGMT_ProbeRequest 0x40
127 #define C80211_SUBTYPE_MGMT_ProbeResponse 0x50
128 #define C80211_SUBTYPE_MGMT_BEACON 0x80
129 #define C80211_SUBTYPE_MGMT_ATIM 0x90
130 #define C80211_SUBTYPE_MGMT_DISASSOSIATION 0xA0
131 #define C80211_SUBTYPE_MGMT_Authentication 0xB0
132 #define C80211_SUBTYPE_MGMT_Deauthentication 0xC0
134 #define C80211_MGMT_AAN_OPENSYSTEM 0x0000
135 #define C80211_MGMT_AAN_SHAREDKEY 0x0001
137 #define C80211_MGMT_CAPABILITY_ESS 0x0001 // see 802.11 p.58
138 #define C80211_MGMT_CAPABILITY_IBSS 0x0002 // - " -
139 #define C80211_MGMT_CAPABILITY_CFPollable 0x0004 // - " -
140 #define C80211_MGMT_CAPABILITY_CFPollRequest 0x0008 // - " -
141 #define C80211_MGMT_CAPABILITY_Privacy 0x0010 // - " -
143 #define C80211_MGMT_SC_Success 0
144 #define C80211_MGMT_SC_Unspecified 1
145 #define C80211_MGMT_SC_SupportCapabilities 10
146 #define C80211_MGMT_SC_ReassDenied 11
147 #define C80211_MGMT_SC_AssDenied 12
148 #define C80211_MGMT_SC_AuthAlgNotSupported 13
149 #define C80211_MGMT_SC_AuthTransSeqNumError 14
150 #define C80211_MGMT_SC_AuthRejectChallenge 15
151 #define C80211_MGMT_SC_AuthRejectTimeout 16
152 #define C80211_MGMT_SC_AssDeniedHandleAP 17
153 #define C80211_MGMT_SC_AssDeniedBSSRate 18
155 #define C80211_MGMT_ElementID_SSID 0
156 #define C80211_MGMT_ElementID_SupportedRates 1
157 #define C80211_MGMT_ElementID_ChallengeText 16
158 #define C80211_MGMT_CAPABILITY_ShortPreamble 0x0020
160 #define MIB_MAX_DATA_BYTES 212
161 #define MIB_HEADER_SIZE 4 /* first four fields */
168 u8 data[MIB_MAX_DATA_BYTES];
187 #define RX_DESC_FLAG_VALID 0x80
188 #define RX_DESC_FLAG_CONSUMED 0x40
189 #define RX_DESC_FLAG_IDLE 0x00
191 #define RX_STATUS_SUCCESS 0x00
193 #define RX_DESC_MSDU_POS_OFFSET 4
194 #define RX_DESC_MSDU_SIZE_OFFSET 6
195 #define RX_DESC_FLAGS_OFFSET 8
196 #define RX_DESC_STATUS_OFFSET 9
197 #define RX_DESC_RSSI_OFFSET 11
198 #define RX_DESC_LINK_QUALITY_OFFSET 12
199 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
200 #define RX_DESC_DURATION_OFFSET 14
201 #define RX_DESC_RX_TIME_OFFSET 16
227 #define TX_DESC_NEXT_OFFSET 0
228 #define TX_DESC_POS_OFFSET 4
229 #define TX_DESC_SIZE_OFFSET 6
230 #define TX_DESC_FLAGS_OFFSET 8
231 #define TX_DESC_STATUS_OFFSET 9
232 #define TX_DESC_RETRY_OFFSET 10
233 #define TX_DESC_RATE_OFFSET 11
234 #define TX_DESC_KEY_INDEX_OFFSET 12
235 #define TX_DESC_CIPHER_TYPE_OFFSET 13
236 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
237 #define TX_DESC_PACKET_TYPE_OFFSET 17
238 #define TX_DESC_HOST_LENGTH_OFFSET 18
242 ///////////////////////////////////////////////////////
243 // Host-MAC interface
244 ///////////////////////////////////////////////////////
246 #define TX_STATUS_SUCCESS 0x00
248 #define TX_FIRM_OWN 0x80
252 #define TX_ERROR 0x01
254 #define TX_PACKET_TYPE_DATA 0x01
255 #define TX_PACKET_TYPE_MGMT 0x02
257 #define ISR_EMPTY 0x00 // no bits set in ISR
258 #define ISR_TxCOMPLETE 0x01 // packet transmitted
259 #define ISR_RxCOMPLETE 0x02 // packet received
260 #define ISR_RxFRAMELOST 0x04 // Rx Frame lost
261 #define ISR_FATAL_ERROR 0x08 // Fatal error
262 #define ISR_COMMAND_COMPLETE 0x10 // command completed
263 #define ISR_OUT_OF_RANGE 0x20 // command completed
264 #define ISR_IBSS_MERGE 0x40 // (4.1.2.30): IBSS merge
265 #define ISR_GENERIC_IRQ 0x80
268 #define Local_Mib_Type 0x01
269 #define Mac_Address_Mib_Type 0x02
270 #define Mac_Mib_Type 0x03
271 #define Statistics_Mib_Type 0x04
272 #define Mac_Mgmt_Mib_Type 0x05
273 #define Mac_Wep_Mib_Type 0x06
274 #define Phy_Mib_Type 0x07
275 #define Multi_Domain_MIB 0x08
277 #define MAC_MGMT_MIB_CUR_BSSID_POS 14
278 #define MAC_MIB_FRAG_THRESHOLD_POS 8
279 #define MAC_MIB_RTS_THRESHOLD_POS 10
280 #define MAC_MIB_SHORT_RETRY_POS 16
281 #define MAC_MIB_LONG_RETRY_POS 17
282 #define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
283 #define MAC_MGMT_MIB_BEACON_PER_POS 0
284 #define MAC_MGMT_MIB_STATION_ID_POS 6
285 #define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
286 #define MAC_MGMT_MIB_CUR_BSSID_POS 14
287 #define MAC_MGMT_MIB_PS_MODE_POS 53
288 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
289 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
290 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
291 #define PHY_MIB_CHANNEL_POS 14
292 #define PHY_MIB_RATE_SET_POS 20
293 #define PHY_MIB_REG_DOMAIN_POS 26
294 #define LOCAL_MIB_AUTO_TX_RATE_POS 3
295 #define LOCAL_MIB_SSID_SIZE 5
296 #define LOCAL_MIB_TX_PROMISCUOUS_POS 6
297 #define LOCAL_MIB_TX_MGMT_RATE_POS 7
298 #define LOCAL_MIB_TX_CONTROL_RATE_POS 8
299 #define LOCAL_MIB_PREAMBLE_TYPE 9
300 #define MAC_ADDR_MIB_MAC_ADDR_POS 0
303 #define CMD_Set_MIB_Vars 0x01
304 #define CMD_Get_MIB_Vars 0x02
305 #define CMD_Scan 0x03
306 #define CMD_Join 0x04
307 #define CMD_Start 0x05
308 #define CMD_EnableRadio 0x06
309 #define CMD_DisableRadio 0x07
310 #define CMD_SiteSurvey 0x0B
312 #define CMD_STATUS_IDLE 0x00
313 #define CMD_STATUS_COMPLETE 0x01
314 #define CMD_STATUS_UNKNOWN 0x02
315 #define CMD_STATUS_INVALID_PARAMETER 0x03
316 #define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
317 #define CMD_STATUS_TIME_OUT 0x07
318 #define CMD_STATUS_IN_PROGRESS 0x08
319 #define CMD_STATUS_REJECTED_RADIO_OFF 0x09
320 #define CMD_STATUS_HOST_ERROR 0xFF
321 #define CMD_STATUS_BUSY 0xFE
324 #define CMD_BLOCK_COMMAND_OFFSET 0
325 #define CMD_BLOCK_STATUS_OFFSET 1
326 #define CMD_BLOCK_PARAMETERS_OFFSET 4
328 #define SCAN_OPTIONS_SITE_SURVEY 0x80
330 #define MGMT_FRAME_BODY_OFFSET 24
331 #define MAX_AUTHENTICATION_RETRIES 3
332 #define MAX_ASSOCIATION_RETRIES 3
334 #define AUTHENTICATION_RESPONSE_TIME_OUT 1000
336 #define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
337 #define LOOP_RETRY_LIMIT 500000
339 #define ACTIVE_MODE 1
342 #define MAX_ENCRYPTION_KEYS 4
343 #define MAX_ENCRYPTION_KEY_SIZE 40
345 ///////////////////////////////////////////////////////////////////////////
346 // 802.11 related definitions
347 ///////////////////////////////////////////////////////////////////////////
350 // Regulatory Domains
353 #define REG_DOMAIN_FCC 0x10 //Channels 1-11 USA
354 #define REG_DOMAIN_DOC 0x20 //Channel 1-11 Canada
355 #define REG_DOMAIN_ETSI 0x30 //Channel 1-13 Europe (ex Spain/France)
356 #define REG_DOMAIN_SPAIN 0x31 //Channel 10-11 Spain
357 #define REG_DOMAIN_FRANCE 0x32 //Channel 10-13 France
358 #define REG_DOMAIN_MKK 0x40 //Channel 14 Japan
359 #define REG_DOMAIN_MKK1 0x41 //Channel 1-14 Japan(MKK1)
360 #define REG_DOMAIN_ISRAEL 0x50 //Channel 3-9 ISRAEL
362 #define BSS_TYPE_AD_HOC 1
363 #define BSS_TYPE_INFRASTRUCTURE 2
365 #define SCAN_TYPE_ACTIVE 0
366 #define SCAN_TYPE_PASSIVE 1
368 #define LONG_PREAMBLE 0
369 #define SHORT_PREAMBLE 1
370 #define AUTO_PREAMBLE 2
372 #define DATA_FRAME_WS_HEADER_SIZE 30
374 /* promiscuous mode control */
375 #define PROM_MODE_OFF 0x0
376 #define PROM_MODE_UNKNOWN 0x1
377 #define PROM_MODE_CRC_FAILED 0x2
378 #define PROM_MODE_DUPLICATED 0x4
379 #define PROM_MODE_MGMT 0x8
380 #define PROM_MODE_CTRL 0x10
381 #define PROM_MODE_BAD_PROTOCOL 0x20
384 #define IFACE_INT_STATUS_OFFSET 0
385 #define IFACE_INT_MASK_OFFSET 1
386 #define IFACE_LOCKOUT_HOST_OFFSET 2
387 #define IFACE_LOCKOUT_MAC_OFFSET 3
388 #define IFACE_FUNC_CTRL_OFFSET 28
389 #define IFACE_MAC_STAT_OFFSET 30
390 #define IFACE_GENERIC_INT_TYPE_OFFSET 32
392 #define CIPHER_SUITE_NONE 0
393 #define CIPHER_SUITE_WEP_64 1
394 #define CIPHER_SUITE_TKIP 2
395 #define CIPHER_SUITE_AES 3
396 #define CIPHER_SUITE_CCX 4
397 #define CIPHER_SUITE_WEP_128 5
400 // IFACE MACROS & definitions
406 #define FUNC_CTRL_TxENABLE 0x10
407 #define FUNC_CTRL_RxENABLE 0x20
408 #define FUNC_CTRL_INIT_COMPLETE 0x01
410 /* A stub firmware image which reads the MAC address from NVRAM on the card.
411 For copyright information and source see the end of this file. */
412 static u8 mac_reader[] = {
413 0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
414 0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
415 0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
416 0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
417 0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
418 0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
419 0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
420 0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
421 0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
422 0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
423 0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
424 0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
425 0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
426 0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
427 0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
428 0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
429 0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
430 0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
431 0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
432 0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
433 0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
434 0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
435 0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
436 0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
437 0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
438 0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
439 0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
440 0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
441 0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
442 0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
443 0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
444 0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
445 0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
446 0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
447 0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
448 0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
449 0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
450 0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
451 0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
452 0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
453 0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
457 struct atmel_private {
458 void *card; /* Bus dependent stucture varies for PCcard */
459 int (*present_callback)(void *); /* And callback which uses it */
460 char firmware_id[32];
461 char firmware_template[32];
462 unsigned char *firmware;
464 struct timer_list management_timer;
465 struct net_device *dev;
466 struct device *sys_dev;
467 struct iw_statistics wstats;
468 struct net_device_stats stats; // device stats
469 spinlock_t irqlock, timerlock; // spinlocks
470 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
472 CARD_TYPE_PARALLEL_FLASH,
476 int do_rx_crc; /* If we need to CRC incoming packets */
477 int probe_crc; /* set if we don't yet know */
478 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
480 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
481 u16 tx_free_mem, tx_buff_head, tx_buff_tail;
483 u16 frag_seq, frag_len, frag_no;
486 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
487 u8 group_cipher_suite, pairwise_cipher_suite;
488 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
489 int wep_key_len[MAX_ENCRYPTION_KEYS];
490 int use_wpa, radio_on_broken; /* firmware dependent stuff. */
493 struct host_info_struct {
494 /* NB this is matched to the hardware, don't change. */
495 u8 volatile int_status;
496 u8 volatile int_mask;
497 u8 volatile lockout_host;
498 u8 volatile lockout_mac;
518 u16 generic_IRQ_type;
523 STATION_STATE_SCANNING,
524 STATION_STATE_JOINNING,
525 STATION_STATE_AUTHENTICATING,
526 STATION_STATE_ASSOCIATING,
528 STATION_STATE_REASSOCIATING,
530 STATION_STATE_MGMT_ERROR
533 int operating_mode, power_mode;
535 int beacons_this_sec;
537 int reg_domain, config_reg_domain;
542 int long_retry, short_retry;
544 int default_beacon_period, beacon_period, listen_interval;
545 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
546 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
549 SITE_SURVEY_IN_PROGRESS,
550 SITE_SURVEY_COMPLETED
554 int station_was_associated, station_is_associated;
566 u8 SSID[MAX_SSID_LENGTH];
567 } BSSinfo[MAX_BSS_ENTRIES];
568 int BSS_list_entries, current_BSS;
569 int connect_to_any_BSS;
570 int SSID_size, new_SSID_size;
571 u8 CurrentBSSID[6], BSSID[6];
572 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
573 u64 last_beacon_timestamp;
574 u8 rx_buf[MAX_WIRELESS_BODY];
578 static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
580 static const struct {
584 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
585 { REG_DOMAIN_DOC, 1, 11, "Canada" },
586 { REG_DOMAIN_ETSI, 1, 13, "Europe" },
587 { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
588 { REG_DOMAIN_FRANCE, 10, 13, "France" },
589 { REG_DOMAIN_MKK, 14, 14, "MKK" },
590 { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
591 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
593 static void build_wpa_mib(struct atmel_private *priv);
594 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
595 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len);
596 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len);
597 static void atmel_set_gcr(struct net_device *dev, u16 mask);
598 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
599 static int atmel_lock_mac(struct atmel_private *priv);
600 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
601 static void atmel_command_irq(struct atmel_private *priv);
602 static int atmel_validate_channel(struct atmel_private *priv, int channel);
603 static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
604 u16 frame_len, u8 rssi);
605 static void atmel_management_timer(u_long a);
606 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
607 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
608 static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
609 u8 *body, int body_len);
611 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
612 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data);
613 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data);
614 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
615 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
616 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
617 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
618 static void atmel_smooth_qual(struct atmel_private *priv);
619 static void atmel_writeAR(struct net_device *dev, u16 data);
620 static int probe_atmel_card(struct net_device *dev);
621 static int reset_atmel_card(struct net_device *dev );
622 static void atmel_enter_state(struct atmel_private *priv, int new_state);
623 int atmel_open (struct net_device *dev);
625 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
627 return priv->host_info_base + offset;
630 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
632 return priv->host_info.command_pos + offset;
635 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
637 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
640 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
642 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
645 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
647 return inb(dev->base_addr + offset);
650 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
652 outb(data, dev->base_addr + offset);
655 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
657 return inw(dev->base_addr + offset);
660 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
662 outw(data, dev->base_addr + offset);
665 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
667 atmel_writeAR(priv->dev, pos);
668 return atmel_read8(priv->dev, DR);
671 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
673 atmel_writeAR(priv->dev, pos);
674 atmel_write8(priv->dev, DR, data);
677 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
679 atmel_writeAR(priv->dev, pos);
680 return atmel_read16(priv->dev, DR);
683 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
685 atmel_writeAR(priv->dev, pos);
686 atmel_write16(priv->dev, DR, data);
689 static const struct iw_handler_def atmel_handler_def;
691 static void tx_done_irq(struct atmel_private *priv)
696 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
697 i < priv->host_info.tx_desc_count;
700 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
701 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
702 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
704 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
706 priv->tx_free_mem += msdu_size;
707 priv->tx_desc_free++;
709 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
710 priv->tx_buff_head = 0;
712 priv->tx_buff_head += msdu_size;
714 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
715 priv->tx_desc_head++ ;
717 priv->tx_desc_head = 0;
719 if (type == TX_PACKET_TYPE_DATA) {
720 if (status == TX_STATUS_SUCCESS)
721 priv->stats.tx_packets++;
723 priv->stats.tx_errors++;
724 netif_wake_queue(priv->dev);
729 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
731 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
733 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
736 if (bottom_free >= len)
737 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
739 if (priv->tx_free_mem - bottom_free >= len) {
740 priv->tx_buff_tail = 0;
741 return priv->host_info.tx_buff_pos;
747 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, u16 len, u16 buff, u8 type)
749 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
750 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
752 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
753 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
754 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
755 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
757 int cipher_type, cipher_length;
759 cipher_type = priv->group_cipher_suite;
760 if (cipher_type == CIPHER_SUITE_WEP_64 ||
761 cipher_type == CIPHER_SUITE_WEP_128 )
763 else if (cipher_type == CIPHER_SUITE_TKIP)
765 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
766 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
767 cipher_type = priv->pairwise_cipher_suite;
770 cipher_type = CIPHER_SUITE_NONE;
774 cipher_type = priv->pairwise_cipher_suite;
775 if (cipher_type == CIPHER_SUITE_WEP_64 ||
776 cipher_type == CIPHER_SUITE_WEP_128 )
778 else if (cipher_type == CIPHER_SUITE_TKIP)
780 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
781 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
782 cipher_type = priv->group_cipher_suite;
785 cipher_type = CIPHER_SUITE_NONE;
790 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
792 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
795 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
796 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
797 if (priv->tx_desc_previous != priv->tx_desc_tail)
798 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
799 priv->tx_desc_previous = priv->tx_desc_tail;
800 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count -1 ))
801 priv->tx_desc_tail++;
803 priv->tx_desc_tail = 0;
804 priv->tx_desc_free--;
805 priv->tx_free_mem -= len;
809 static int start_tx (struct sk_buff *skb, struct net_device *dev)
811 struct atmel_private *priv = netdev_priv(dev);
812 struct ieee802_11_hdr header;
814 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
815 u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
817 if (priv->card && priv->present_callback &&
818 !(*priv->present_callback)(priv->card)) {
819 priv->stats.tx_errors++;
824 if (priv->station_state != STATION_STATE_READY) {
825 priv->stats.tx_errors++;
830 /* first ensure the timer func cannot run */
831 spin_lock_bh(&priv->timerlock);
832 /* then stop the hardware ISR */
833 spin_lock_irqsave(&priv->irqlock, flags);
834 /* nb doing the above in the opposite order will deadlock */
836 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
837 12 first bytes (containing DA/SA) and put them in the appropriate fields of
838 the Wireless Header. Thus the packet length is then the initial + 18 (+30-12) */
840 if (!(buff = find_tx_buff(priv, len + 18))) {
841 priv->stats.tx_dropped++;
842 spin_unlock_irqrestore(&priv->irqlock, flags);
843 spin_unlock_bh(&priv->timerlock);
844 netif_stop_queue(dev);
848 frame_ctl = IEEE802_11_FTYPE_DATA;
849 header.duration_id = 0;
852 frame_ctl |= IEEE802_11_FCTL_WEP;
853 if (priv->operating_mode == IW_MODE_ADHOC) {
854 memcpy(&header.addr1, skb->data, 6);
855 memcpy(&header.addr2, dev->dev_addr, 6);
856 memcpy(&header.addr3, priv->BSSID, 6);
858 frame_ctl |= IEEE802_11_FCTL_TODS;
859 memcpy(&header.addr1, priv->CurrentBSSID, 6);
860 memcpy(&header.addr2, dev->dev_addr, 6);
861 memcpy(&header.addr3, skb->data, 6);
865 memcpy(&header.addr4, SNAP_RFC1024, 6);
867 header.frame_ctl = cpu_to_le16(frame_ctl);
868 /* Copy the wireless header into the card */
869 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
870 /* Copy the packet sans its 802.3 header addresses which have been replaced */
871 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
872 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
874 /* low bit of first byte of destination tells us if broadcast */
875 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
876 dev->trans_start = jiffies;
877 priv->stats.tx_bytes += len;
879 spin_unlock_irqrestore(&priv->irqlock, flags);
880 spin_unlock_bh(&priv->timerlock);
886 static void atmel_transmit_management_frame(struct atmel_private *priv,
887 struct ieee802_11_hdr *header,
888 u8 *body, int body_len)
891 int len = MGMT_FRAME_BODY_OFFSET + body_len;
893 if (!(buff = find_tx_buff(priv, len)))
896 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
897 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
898 priv->tx_buff_tail += len;
899 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
902 static void fast_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
903 u16 msdu_size, u16 rx_packet_loc, u32 crc)
905 /* fast path: unfragmented packet copy directly into skbuf */
910 /* get the final, mac 4 header field, this tells us encapsulation */
911 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
914 if (priv->do_rx_crc) {
915 crc = crc32_le(crc, mac4, 6);
919 if (!(skb = dev_alloc_skb(msdu_size + 14))) {
920 priv->stats.rx_dropped++;
925 skbp = skb_put(skb, msdu_size + 12);
926 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
928 if (priv->do_rx_crc) {
930 crc = crc32_le(crc, skbp + 12, msdu_size);
931 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
932 if ((crc ^ 0xffffffff) != netcrc) {
933 priv->stats.rx_crc_errors++;
939 memcpy(skbp, header->addr1, 6); /* destination address */
940 if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
941 memcpy(&skbp[6], header->addr3, 6);
943 memcpy(&skbp[6], header->addr2, 6); /* source address */
945 priv->dev->last_rx=jiffies;
946 skb->dev = priv->dev;
947 skb->protocol = eth_type_trans(skb, priv->dev);
948 skb->ip_summed = CHECKSUM_NONE;
950 priv->stats.rx_bytes += 12 + msdu_size;
951 priv->stats.rx_packets++;
954 /* Test to see if the packet in card memory at packet_loc has a valid CRC
955 It doesn't matter that this is slow: it is only used to proble the first few packets. */
956 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
958 int i = msdu_size - 4;
959 u32 netcrc, crc = 0xffffffff;
964 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
966 atmel_writeAR(priv->dev, packet_loc);
968 u8 octet = atmel_read8(priv->dev, DR);
969 crc = crc32_le(crc, &octet, 1);
972 return (crc ^ 0xffffffff) == netcrc;
975 static void frag_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
976 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
982 if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
983 memcpy(source, header->addr3, 6);
985 memcpy(source, header->addr2, 6);
987 rx_packet_loc += 24; /* skip header */
992 if (frag_no == 0) { /* first fragment */
993 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
998 crc = crc32_le(crc, mac4, 6);
1000 priv->frag_seq = seq_no;
1002 priv->frag_len = msdu_size;
1003 memcpy(priv->frag_source, source, 6);
1004 memcpy(&priv->rx_buf[6], source, 6);
1005 memcpy(priv->rx_buf, header->addr1, 6);
1007 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1009 if (priv->do_rx_crc) {
1011 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1012 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1013 if ((crc ^ 0xffffffff) != netcrc) {
1014 priv->stats.rx_crc_errors++;
1015 memset(priv->frag_source, 0xff, 6);
1019 } else if (priv->frag_no == frag_no &&
1020 priv->frag_seq == seq_no &&
1021 memcmp(priv->frag_source, source, 6) == 0) {
1023 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1024 rx_packet_loc, msdu_size);
1025 if (priv->do_rx_crc) {
1028 &priv->rx_buf[12 + priv->frag_len],
1030 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1031 if ((crc ^ 0xffffffff) != netcrc) {
1032 priv->stats.rx_crc_errors++;
1033 memset(priv->frag_source, 0xff, 6);
1034 more_frags = 1; /* don't send broken assembly */
1038 priv->frag_len += msdu_size;
1041 if (!more_frags) { /* last one */
1042 memset(priv->frag_source, 0xff, 6);
1043 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1044 priv->stats.rx_dropped++;
1046 skb_reserve(skb, 2);
1047 memcpy(skb_put(skb, priv->frag_len + 12),
1049 priv->frag_len + 12);
1050 priv->dev->last_rx = jiffies;
1051 skb->dev = priv->dev;
1052 skb->protocol = eth_type_trans(skb, priv->dev);
1053 skb->ip_summed = CHECKSUM_NONE;
1055 priv->stats.rx_bytes += priv->frag_len + 12;
1056 priv->stats.rx_packets++;
1061 priv->wstats.discard.fragment++;
1064 static void rx_done_irq(struct atmel_private *priv)
1067 struct ieee802_11_hdr header;
1070 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1071 i < priv->host_info.rx_desc_count;
1074 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1075 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1076 u32 crc = 0xffffffff;
1078 if (status != RX_STATUS_SUCCESS) {
1079 if (status == 0xc1) /* determined by experiment */
1080 priv->wstats.discard.nwid++;
1082 priv->stats.rx_errors++;
1086 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1087 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1089 if (msdu_size < 30) {
1090 priv->stats.rx_errors++;
1094 /* Get header as far as end of seq_ctl */
1095 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1096 frame_ctl = le16_to_cpu(header.frame_ctl);
1097 seq_control = le16_to_cpu(header.seq_ctl);
1099 /* probe for CRC use here if needed once five packets have arrived with
1100 the same crc status, we assume we know what's happening and stop probing */
1101 if (priv->probe_crc) {
1102 if (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP)) {
1103 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1105 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1107 if (priv->do_rx_crc) {
1108 if (priv->crc_ok_cnt++ > 5)
1109 priv->probe_crc = 0;
1111 if (priv->crc_ko_cnt++ > 5)
1112 priv->probe_crc = 0;
1116 /* don't CRC header when WEP in use */
1117 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP))) {
1118 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1120 msdu_size -= 24; /* header */
1122 if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_DATA) {
1124 int more_fragments = frame_ctl & IEEE802_11_FCTL_MOREFRAGS;
1125 u8 packet_fragment_no = seq_control & IEEE802_11_SCTL_FRAG;
1126 u16 packet_sequence_no = (seq_control & IEEE802_11_SCTL_SEQ) >> 4;
1128 if (!more_fragments && packet_fragment_no == 0 ) {
1129 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1131 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1132 packet_sequence_no, packet_fragment_no, more_fragments);
1136 if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_MGMT) {
1137 /* copy rest of packet into buffer */
1138 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1140 /* we use the same buffer for frag reassembly and control packets */
1141 memset(priv->frag_source, 0xff, 6);
1143 if (priv->do_rx_crc) {
1144 /* last 4 octets is crc */
1146 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1147 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1148 priv->stats.rx_crc_errors++;
1153 atmel_management_frame(priv, &header, msdu_size,
1154 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1158 /* release descriptor */
1159 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1161 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1162 priv->rx_desc_head++;
1164 priv->rx_desc_head = 0;
1168 static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1170 struct net_device *dev = (struct net_device *) dev_id;
1171 struct atmel_private *priv = netdev_priv(dev);
1174 static u8 irq_order[] = {
1180 ISR_COMMAND_COMPLETE,
1186 if (priv->card && priv->present_callback &&
1187 !(*priv->present_callback)(priv->card))
1190 /* In this state upper-level code assumes it can mess with
1191 the card unhampered by interrupts which may change register state.
1192 Note that even though the card shouldn't generate interrupts
1193 the inturrupt line may be shared. This allows card setup
1194 to go on without disabling interrupts for a long time. */
1195 if (priv->station_state == STATION_STATE_DOWN)
1198 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1201 if (!atmel_lock_mac(priv)) {
1202 /* failed to contact card */
1203 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1207 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1208 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1211 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1212 return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1215 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1217 for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
1218 if (isr & irq_order[i])
1221 if (!atmel_lock_mac(priv)) {
1222 /* failed to contact card */
1223 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1227 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1228 isr ^= irq_order[i];
1229 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1230 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1232 switch (irq_order[i]) {
1234 case ISR_OUT_OF_RANGE:
1235 if (priv->operating_mode == IW_MODE_INFRA &&
1236 priv->station_state == STATION_STATE_READY) {
1237 priv->station_is_associated = 0;
1238 atmel_scan(priv, 1);
1242 case ISR_RxFRAMELOST:
1243 priv->wstats.discard.misc++;
1245 case ISR_RxCOMPLETE:
1249 case ISR_TxCOMPLETE:
1253 case ISR_FATAL_ERROR:
1254 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1255 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1258 case ISR_COMMAND_COMPLETE:
1259 atmel_command_irq(priv);
1262 case ISR_IBSS_MERGE:
1263 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1264 priv->CurrentBSSID, 6);
1265 /* The WPA stuff cares about the current AP address */
1267 build_wpa_mib(priv);
1269 case ISR_GENERIC_IRQ:
1270 printk(KERN_INFO "%s: Generic_irq recieved.\n", dev->name);
1277 static struct net_device_stats *atmel_get_stats (struct net_device *dev)
1279 struct atmel_private *priv = netdev_priv(dev);
1280 return &priv->stats;
1283 static struct iw_statistics *atmel_get_wireless_stats (struct net_device *dev)
1285 struct atmel_private *priv = netdev_priv(dev);
1287 /* update the link quality here in case we are seeing no beacons
1288 at all to drive the process */
1289 atmel_smooth_qual(priv);
1291 priv->wstats.status = priv->station_state;
1293 if (priv->operating_mode == IW_MODE_INFRA) {
1294 if (priv->station_state != STATION_STATE_READY) {
1295 priv->wstats.qual.qual = 0;
1296 priv->wstats.qual.level = 0;
1298 priv->wstats.qual.noise = 0;
1299 priv->wstats.qual.updated = 7;
1301 /* Quality levels cannot be determined in ad-hoc mode,
1302 because we can 'hear' more that one remote station. */
1303 priv->wstats.qual.qual = 0;
1304 priv->wstats.qual.level = 0;
1305 priv->wstats.qual.noise = 0;
1306 priv->wstats.qual.updated = 0;
1307 priv->wstats.miss.beacon = 0;
1310 return (&priv->wstats);
1313 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1315 if ((new_mtu < 68) || (new_mtu > 2312))
1321 static int atmel_set_mac_address(struct net_device *dev, void *p)
1323 struct sockaddr *addr = p;
1325 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1326 return atmel_open(dev);
1329 EXPORT_SYMBOL(atmel_open);
1331 int atmel_open (struct net_device *dev)
1333 struct atmel_private *priv = netdev_priv(dev);
1336 /* any scheduled timer is no longer needed and might screw things up.. */
1337 del_timer_sync(&priv->management_timer);
1339 /* Interrupts will not touch the card once in this state... */
1340 priv->station_state = STATION_STATE_DOWN;
1342 if (priv->new_SSID_size) {
1343 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1344 priv->SSID_size = priv->new_SSID_size;
1345 priv->new_SSID_size = 0;
1347 priv->BSS_list_entries = 0;
1349 priv->AuthenticationRequestRetryCnt = 0;
1350 priv->AssociationRequestRetryCnt = 0;
1351 priv->ReAssociationRequestRetryCnt = 0;
1352 priv->CurrentAuthentTransactionSeqNum = 0x0001;
1353 priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1355 priv->site_survey_state = SITE_SURVEY_IDLE;
1356 priv->station_is_associated = 0;
1358 if (!reset_atmel_card(dev))
1361 if (priv->config_reg_domain) {
1362 priv->reg_domain = priv->config_reg_domain;
1363 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1365 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1366 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1367 if (priv->reg_domain == channel_table[i].reg_domain)
1369 if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
1370 priv->reg_domain = REG_DOMAIN_MKK1;
1371 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1375 if ((channel = atmel_validate_channel(priv, priv->channel)))
1376 priv->channel = channel;
1378 /* this moves station_state on.... */
1379 atmel_scan(priv, 1);
1381 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1385 static int atmel_close (struct net_device *dev)
1387 struct atmel_private *priv = netdev_priv(dev);
1389 atmel_enter_state(priv, STATION_STATE_DOWN);
1391 if (priv->bus_type == BUS_TYPE_PCCARD)
1392 atmel_write16(dev, GCR, 0x0060);
1393 atmel_write16(dev, GCR, 0x0040);
1397 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1399 /* check that channel is OK, if so return zero,
1400 else return suitable default channel */
1403 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1404 if (priv->reg_domain == channel_table[i].reg_domain) {
1405 if (channel >= channel_table[i].min &&
1406 channel <= channel_table[i].max)
1409 return channel_table[i].min;
1414 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1420 p += sprintf(p, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1422 if (priv->station_state != STATION_STATE_DOWN) {
1423 p += sprintf(p, "Firmware version:\t%d.%d build %d\nFirmware location:\t",
1424 priv->host_info.major_version,
1425 priv->host_info.minor_version,
1426 priv->host_info.build_version);
1428 if (priv->card_type != CARD_TYPE_EEPROM)
1429 p += sprintf(p, "on card\n");
1430 else if (priv->firmware)
1431 p += sprintf(p, "%s loaded by host\n", priv->firmware_id);
1433 p += sprintf(p, "%s loaded by hotplug\n", priv->firmware_id);
1435 switch(priv->card_type) {
1436 case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
1437 case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
1438 case CARD_TYPE_EEPROM: c = "EEPROM"; break;
1439 default: c = "<unknown>";
1444 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
1445 if (priv->reg_domain == channel_table[i].reg_domain)
1446 r = channel_table[i].name;
1448 p += sprintf(p, "MAC memory type:\t%s\n", c);
1449 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1450 p += sprintf(p, "Host CRC checking:\t%s\n",
1451 priv->do_rx_crc ? "On" : "Off");
1452 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1453 priv->use_wpa ? "Yes" : "No");
1456 switch(priv->station_state) {
1457 case STATION_STATE_SCANNING: s = "Scanning"; break;
1458 case STATION_STATE_JOINNING: s = "Joining"; break;
1459 case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
1460 case STATION_STATE_ASSOCIATING: s = "Associating"; break;
1461 case STATION_STATE_READY: s = "Ready"; break;
1462 case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
1463 case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
1464 case STATION_STATE_DOWN: s = "Down"; break;
1465 default: s = "<unknown>";
1468 p += sprintf(p, "Current state:\t\t%s\n", s);
1472 static int atmel_read_proc(char *page, char **start, off_t off,
1473 int count, int *eof, void *data)
1475 struct atmel_private *priv = data;
1476 int len = atmel_proc_output (page, priv);
1477 if (len <= off+count) *eof = 1;
1478 *start = page + off;
1480 if (len>count) len = count;
1485 struct net_device *init_atmel_card( unsigned short irq, int port, char *firmware_id,
1486 struct device *sys_dev, int (*card_present)(void *), void *card)
1488 struct net_device *dev;
1489 struct atmel_private *priv;
1492 /* Create the network device object. */
1493 dev = alloc_etherdev(sizeof(*priv));
1495 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
1498 if (dev_alloc_name(dev, dev->name) < 0) {
1499 printk(KERN_ERR "atmel: Couldn't get name!\n");
1503 priv = netdev_priv(dev);
1505 priv->sys_dev = sys_dev;
1506 priv->present_callback = card_present;
1508 priv->firmware = NULL;
1509 priv->firmware_id[0] = '\0';
1510 priv->firmware_template[0] = '\0';
1511 if (firmware) /* module parameter */
1512 strcpy(priv->firmware_id, firmware);
1513 else if (firmware_id) /* from PCMCIA card-matching or PCI */
1514 strcpy(priv->firmware_template, firmware_id);
1515 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1516 priv->station_state = STATION_STATE_DOWN;
1517 priv->do_rx_crc = 0;
1518 /* For PCMCIA cards, some chips need CRC, some don't
1519 so we have to probe. */
1520 if (priv->bus_type == BUS_TYPE_PCCARD) {
1521 priv->probe_crc = 1;
1522 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1524 priv->probe_crc = 0;
1525 memset(&priv->stats, 0, sizeof(priv->stats));
1526 memset(&priv->wstats, 0, sizeof(priv->wstats));
1527 priv->last_qual = jiffies;
1528 priv->last_beacon_timestamp = 0;
1529 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1530 memset(priv->BSSID, 0, 6);
1531 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1532 priv->station_was_associated = 0;
1534 priv->last_survey = jiffies;
1535 priv->preamble = LONG_PREAMBLE;
1536 priv->operating_mode = IW_MODE_INFRA;
1537 priv->connect_to_any_BSS = 0;
1538 priv->config_reg_domain = 0;
1539 priv->reg_domain = 0;
1541 priv->auto_tx_rate = 1;
1543 priv->power_mode = 0;
1544 priv->SSID[0] = '\0';
1545 priv->SSID_size = 0;
1546 priv->new_SSID_size = 0;
1547 priv->frag_threshold = 2346;
1548 priv->rts_threshold = 2347;
1549 priv->short_retry = 7;
1550 priv->long_retry = 4;
1552 priv->wep_is_on = 0;
1553 priv->default_key = 0;
1554 priv->encryption_level = 0;
1555 priv->exclude_unencrypted = 0;
1556 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1558 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1559 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1561 priv->default_beacon_period = priv->beacon_period = 100;
1562 priv->listen_interval = 1;
1564 init_timer(&priv->management_timer);
1565 spin_lock_init(&priv->irqlock);
1566 spin_lock_init(&priv->timerlock);
1567 priv->management_timer.function = atmel_management_timer;
1568 priv->management_timer.data = (unsigned long) dev;
1570 dev->open = atmel_open;
1571 dev->stop = atmel_close;
1572 dev->change_mtu = atmel_change_mtu;
1573 dev->set_mac_address = atmel_set_mac_address;
1574 dev->hard_start_xmit = start_tx;
1575 dev->get_stats = atmel_get_stats;
1576 dev->get_wireless_stats = atmel_get_wireless_stats;
1577 dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
1578 dev->do_ioctl = atmel_ioctl;
1580 dev->base_addr = port;
1582 if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
1583 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc );
1587 if (priv->bus_type == BUS_TYPE_PCI &&
1588 !request_region( dev->base_addr, 64, dev->name )) {
1592 if (register_netdev(dev))
1595 if (!probe_atmel_card(dev)){
1596 unregister_netdev(dev);
1600 netif_carrier_off(dev);
1602 create_proc_read_entry ("driver/atmel", 0, 0, atmel_read_proc, priv);
1604 printk(KERN_INFO "%s: Atmel at76c50x wireless. Version %d.%d simon@thekelleys.org.uk\n",
1605 dev->name, DRIVER_MAJOR, DRIVER_MINOR);
1607 SET_MODULE_OWNER(dev);
1611 if (priv->bus_type == BUS_TYPE_PCI)
1612 release_region( dev->base_addr, 64 );
1614 free_irq(dev->irq, dev);
1620 EXPORT_SYMBOL(init_atmel_card);
1622 void stop_atmel_card(struct net_device *dev, int freeres)
1624 struct atmel_private *priv = netdev_priv(dev);
1626 /* put a brick on it... */
1627 if (priv->bus_type == BUS_TYPE_PCCARD)
1628 atmel_write16(dev, GCR, 0x0060);
1629 atmel_write16(dev, GCR, 0x0040);
1631 del_timer_sync(&priv->management_timer);
1632 unregister_netdev(dev);
1633 remove_proc_entry("driver/atmel", NULL);
1634 free_irq(dev->irq, dev);
1636 kfree(priv->firmware);
1638 /* PCMCIA frees this stuff, so only for PCI */
1639 release_region(dev->base_addr, 64);
1644 EXPORT_SYMBOL(stop_atmel_card);
1646 static int atmel_set_essid(struct net_device *dev,
1647 struct iw_request_info *info,
1648 struct iw_point *dwrq,
1651 struct atmel_private *priv = netdev_priv(dev);
1653 /* Check if we asked for `any' */
1654 if(dwrq->flags == 0) {
1655 priv->connect_to_any_BSS = 1;
1657 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1659 priv->connect_to_any_BSS = 0;
1661 /* Check the size of the string */
1662 if (dwrq->length > MAX_SSID_LENGTH + 1)
1667 memcpy(priv->new_SSID, extra, dwrq->length - 1);
1668 priv->new_SSID_size = dwrq->length - 1;
1671 return -EINPROGRESS;
1674 static int atmel_get_essid(struct net_device *dev,
1675 struct iw_request_info *info,
1676 struct iw_point *dwrq,
1679 struct atmel_private *priv = netdev_priv(dev);
1681 /* Get the current SSID */
1682 if (priv->new_SSID_size != 0) {
1683 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1684 extra[priv->new_SSID_size] = '\0';
1685 dwrq->length = priv->new_SSID_size + 1;
1687 memcpy(extra, priv->SSID, priv->SSID_size);
1688 extra[priv->SSID_size] = '\0';
1689 dwrq->length = priv->SSID_size + 1;
1692 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1697 static int atmel_get_wap(struct net_device *dev,
1698 struct iw_request_info *info,
1699 struct sockaddr *awrq,
1702 struct atmel_private *priv = netdev_priv(dev);
1703 memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1704 awrq->sa_family = ARPHRD_ETHER;
1709 static int atmel_set_encode(struct net_device *dev,
1710 struct iw_request_info *info,
1711 struct iw_point *dwrq,
1714 struct atmel_private *priv = netdev_priv(dev);
1716 /* Basic checking: do we have a key to set ?
1717 * Note : with the new API, it's impossible to get a NULL pointer.
1718 * Therefore, we need to check a key size == 0 instead.
1719 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1720 * when no key is present (only change flags), but older versions
1721 * don't do it. - Jean II */
1722 if (dwrq->length > 0) {
1723 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1724 int current_index = priv->default_key;
1725 /* Check the size of the key */
1726 if (dwrq->length > 13) {
1729 /* Check the index (none -> use current) */
1730 if (index < 0 || index >= 4)
1731 index = current_index;
1733 priv->default_key = index;
1734 /* Set the length */
1735 if (dwrq->length > 5)
1736 priv->wep_key_len[index] = 13;
1738 if (dwrq->length > 0)
1739 priv->wep_key_len[index] = 5;
1741 /* Disable the key */
1742 priv->wep_key_len[index] = 0;
1743 /* Check if the key is not marked as invalid */
1744 if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
1746 memset(priv->wep_keys[index], 0, 13);
1747 /* Copy the key in the driver */
1748 memcpy(priv->wep_keys[index], extra, dwrq->length);
1750 /* WE specify that if a valid key is set, encryption
1751 * should be enabled (user may turn it off later)
1752 * This is also how "iwconfig ethX key on" works */
1753 if (index == current_index &&
1754 priv->wep_key_len[index] > 0) {
1755 priv->wep_is_on = 1;
1756 priv->exclude_unencrypted = 1;
1757 if (priv->wep_key_len[index] > 5) {
1758 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1759 priv->encryption_level = 2;
1761 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1762 priv->encryption_level = 1;
1766 /* Do we want to just set the transmit key index ? */
1767 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1768 if ( index>=0 && index < 4 ) {
1769 priv->default_key = index;
1771 /* Don't complain if only change the mode */
1772 if(!dwrq->flags & IW_ENCODE_MODE) {
1776 /* Read the flags */
1777 if(dwrq->flags & IW_ENCODE_DISABLED) {
1778 priv->wep_is_on = 0;
1779 priv->encryption_level = 0;
1780 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1782 priv->wep_is_on = 1;
1783 if (priv->wep_key_len[priv->default_key] > 5) {
1784 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1785 priv->encryption_level = 2;
1787 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1788 priv->encryption_level = 1;
1791 if(dwrq->flags & IW_ENCODE_RESTRICTED)
1792 priv->exclude_unencrypted = 1;
1793 if(dwrq->flags & IW_ENCODE_OPEN)
1794 priv->exclude_unencrypted = 0;
1796 return -EINPROGRESS; /* Call commit handler */
1800 static int atmel_get_encode(struct net_device *dev,
1801 struct iw_request_info *info,
1802 struct iw_point *dwrq,
1805 struct atmel_private *priv = netdev_priv(dev);
1806 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1808 if (!priv->wep_is_on)
1809 dwrq->flags = IW_ENCODE_DISABLED;
1810 else if (priv->exclude_unencrypted)
1811 dwrq->flags = IW_ENCODE_RESTRICTED;
1813 dwrq->flags = IW_ENCODE_OPEN;
1815 /* Which key do we want ? -1 -> tx index */
1816 if (index < 0 || index >= 4)
1817 index = priv->default_key;
1818 dwrq->flags |= index + 1;
1819 /* Copy the key to the user buffer */
1820 dwrq->length = priv->wep_key_len[index];
1821 if (dwrq->length > 16) {
1824 memset(extra, 0, 16);
1825 memcpy(extra, priv->wep_keys[index], dwrq->length);
1831 static int atmel_get_name(struct net_device *dev,
1832 struct iw_request_info *info,
1836 strcpy(cwrq, "IEEE 802.11-DS");
1840 static int atmel_set_rate(struct net_device *dev,
1841 struct iw_request_info *info,
1842 struct iw_param *vwrq,
1845 struct atmel_private *priv = netdev_priv(dev);
1847 if (vwrq->fixed == 0) {
1849 priv->auto_tx_rate = 1;
1851 priv->auto_tx_rate = 0;
1853 /* Which type of value ? */
1854 if((vwrq->value < 4) && (vwrq->value >= 0)) {
1855 /* Setting by rate index */
1856 priv->tx_rate = vwrq->value;
1858 /* Setting by frequency value */
1859 switch (vwrq->value) {
1860 case 1000000: priv->tx_rate = 0; break;
1861 case 2000000: priv->tx_rate = 1; break;
1862 case 5500000: priv->tx_rate = 2; break;
1863 case 11000000: priv->tx_rate = 3; break;
1864 default: return -EINVAL;
1869 return -EINPROGRESS;
1872 static int atmel_set_mode(struct net_device *dev,
1873 struct iw_request_info *info,
1877 struct atmel_private *priv = netdev_priv(dev);
1879 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
1882 priv->operating_mode = *uwrq;
1883 return -EINPROGRESS;
1886 static int atmel_get_mode(struct net_device *dev,
1887 struct iw_request_info *info,
1891 struct atmel_private *priv = netdev_priv(dev);
1893 *uwrq = priv->operating_mode;
1897 static int atmel_get_rate(struct net_device *dev,
1898 struct iw_request_info *info,
1899 struct iw_param *vwrq,
1902 struct atmel_private *priv = netdev_priv(dev);
1904 if (priv->auto_tx_rate) {
1906 vwrq->value = 11000000;
1909 switch(priv->tx_rate) {
1910 case 0: vwrq->value = 1000000; break;
1911 case 1: vwrq->value = 2000000; break;
1912 case 2: vwrq->value = 5500000; break;
1913 case 3: vwrq->value = 11000000; break;
1919 static int atmel_set_power(struct net_device *dev,
1920 struct iw_request_info *info,
1921 struct iw_param *vwrq,
1924 struct atmel_private *priv = netdev_priv(dev);
1925 priv->power_mode = vwrq->disabled ? 0 : 1;
1926 return -EINPROGRESS;
1929 static int atmel_get_power(struct net_device *dev,
1930 struct iw_request_info *info,
1931 struct iw_param *vwrq,
1934 struct atmel_private *priv = netdev_priv(dev);
1935 vwrq->disabled = priv->power_mode ? 0 : 1;
1936 vwrq->flags = IW_POWER_ON;
1940 static int atmel_set_retry(struct net_device *dev,
1941 struct iw_request_info *info,
1942 struct iw_param *vwrq,
1945 struct atmel_private *priv = netdev_priv(dev);
1947 if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
1948 if(vwrq->flags & IW_RETRY_MAX)
1949 priv->long_retry = vwrq->value;
1950 else if (vwrq->flags & IW_RETRY_MIN)
1951 priv->short_retry = vwrq->value;
1953 /* No modifier : set both */
1954 priv->long_retry = vwrq->value;
1955 priv->short_retry = vwrq->value;
1957 return -EINPROGRESS;
1963 static int atmel_get_retry(struct net_device *dev,
1964 struct iw_request_info *info,
1965 struct iw_param *vwrq,
1968 struct atmel_private *priv = netdev_priv(dev);
1970 vwrq->disabled = 0; /* Can't be disabled */
1972 /* Note : by default, display the min retry number */
1973 if((vwrq->flags & IW_RETRY_MAX)) {
1974 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
1975 vwrq->value = priv->long_retry;
1977 vwrq->flags = IW_RETRY_LIMIT;
1978 vwrq->value = priv->short_retry;
1979 if(priv->long_retry != priv->short_retry)
1980 vwrq->flags |= IW_RETRY_MIN;
1986 static int atmel_set_rts(struct net_device *dev,
1987 struct iw_request_info *info,
1988 struct iw_param *vwrq,
1991 struct atmel_private *priv = netdev_priv(dev);
1992 int rthr = vwrq->value;
1996 if((rthr < 0) || (rthr > 2347)) {
1999 priv->rts_threshold = rthr;
2001 return -EINPROGRESS; /* Call commit handler */
2004 static int atmel_get_rts(struct net_device *dev,
2005 struct iw_request_info *info,
2006 struct iw_param *vwrq,
2009 struct atmel_private *priv = netdev_priv(dev);
2011 vwrq->value = priv->rts_threshold;
2012 vwrq->disabled = (vwrq->value >= 2347);
2018 static int atmel_set_frag(struct net_device *dev,
2019 struct iw_request_info *info,
2020 struct iw_param *vwrq,
2023 struct atmel_private *priv = netdev_priv(dev);
2024 int fthr = vwrq->value;
2028 if((fthr < 256) || (fthr > 2346)) {
2031 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2032 priv->frag_threshold = fthr;
2034 return -EINPROGRESS; /* Call commit handler */
2037 static int atmel_get_frag(struct net_device *dev,
2038 struct iw_request_info *info,
2039 struct iw_param *vwrq,
2042 struct atmel_private *priv = netdev_priv(dev);
2044 vwrq->value = priv->frag_threshold;
2045 vwrq->disabled = (vwrq->value >= 2346);
2051 static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
2052 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
2054 static int atmel_set_freq(struct net_device *dev,
2055 struct iw_request_info *info,
2056 struct iw_freq *fwrq,
2059 struct atmel_private *priv = netdev_priv(dev);
2060 int rc = -EINPROGRESS; /* Call commit handler */
2062 /* If setting by frequency, convert to a channel */
2063 if((fwrq->e == 1) &&
2064 (fwrq->m >= (int) 241200000) &&
2065 (fwrq->m <= (int) 248700000)) {
2066 int f = fwrq->m / 100000;
2068 while((c < 14) && (f != frequency_list[c]))
2070 /* Hack to fall through... */
2074 /* Setting by channel number */
2075 if((fwrq->m > 1000) || (fwrq->e > 0))
2078 int channel = fwrq->m;
2079 if (atmel_validate_channel(priv, channel) == 0) {
2080 priv->channel = channel;
2088 static int atmel_get_freq(struct net_device *dev,
2089 struct iw_request_info *info,
2090 struct iw_freq *fwrq,
2093 struct atmel_private *priv = netdev_priv(dev);
2095 fwrq->m = priv->channel;
2100 static int atmel_set_scan(struct net_device *dev,
2101 struct iw_request_info *info,
2102 struct iw_param *vwrq,
2105 struct atmel_private *priv = netdev_priv(dev);
2106 unsigned long flags;
2108 /* Note : you may have realised that, as this is a SET operation,
2109 * this is privileged and therefore a normal user can't
2111 * This is not an error, while the device perform scanning,
2112 * traffic doesn't flow, so it's a perfect DoS...
2115 if (priv->station_state == STATION_STATE_DOWN)
2118 /* Timeout old surveys. */
2119 if ((jiffies - priv->last_survey) > (20 * HZ))
2120 priv->site_survey_state = SITE_SURVEY_IDLE;
2121 priv->last_survey = jiffies;
2123 /* Initiate a scan command */
2124 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2127 del_timer_sync(&priv->management_timer);
2128 spin_lock_irqsave(&priv->irqlock, flags);
2130 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2131 priv->fast_scan = 0;
2132 atmel_scan(priv, 0);
2133 spin_unlock_irqrestore(&priv->irqlock, flags);
2138 static int atmel_get_scan(struct net_device *dev,
2139 struct iw_request_info *info,
2140 struct iw_point *dwrq,
2143 struct atmel_private *priv = netdev_priv(dev);
2145 char *current_ev = extra;
2146 struct iw_event iwe;
2148 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2151 for(i=0; i<priv->BSS_list_entries; i++) {
2152 iwe.cmd = SIOCGIWAP;
2153 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2154 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2155 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
2157 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2158 if (iwe.u.data.length > 32)
2159 iwe.u.data.length = 32;
2160 iwe.cmd = SIOCGIWESSID;
2161 iwe.u.data.flags = 1;
2162 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
2164 iwe.cmd = SIOCGIWMODE;
2165 iwe.u.mode = priv->BSSinfo[i].BSStype;
2166 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
2168 iwe.cmd = SIOCGIWFREQ;
2169 iwe.u.freq.m = priv->BSSinfo[i].channel;
2171 current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
2173 iwe.cmd = SIOCGIWENCODE;
2174 if (priv->BSSinfo[i].UsingWEP)
2175 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2177 iwe.u.data.flags = IW_ENCODE_DISABLED;
2178 iwe.u.data.length = 0;
2179 current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
2183 /* Length of data */
2184 dwrq->length = (current_ev - extra);
2190 static int atmel_get_range(struct net_device *dev,
2191 struct iw_request_info *info,
2192 struct iw_point *dwrq,
2195 struct atmel_private *priv = netdev_priv(dev);
2196 struct iw_range *range = (struct iw_range *) extra;
2199 dwrq->length = sizeof(struct iw_range);
2200 memset(range, 0, sizeof(range));
2201 range->min_nwid = 0x0000;
2202 range->max_nwid = 0x0000;
2203 range->num_channels = 0;
2204 for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
2205 if (priv->reg_domain == channel_table[j].reg_domain) {
2206 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2209 if (range->num_channels != 0) {
2210 for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2211 range->freq[k].i = i; /* List index */
2212 range->freq[k].m = frequency_list[i-1] * 100000;
2213 range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
2215 range->num_frequency = k;
2218 range->max_qual.qual = 100;
2219 range->max_qual.level = 100;
2220 range->max_qual.noise = 0;
2221 range->sensitivity = 0;
2223 range->bitrate[0] = 1000000;
2224 range->bitrate[1] = 2000000;
2225 range->bitrate[2] = 5500000;
2226 range->bitrate[3] = 11000000;
2227 range->num_bitrates = 4;
2230 range->max_rts = 2347;
2231 range->min_frag = 256;
2232 range->max_frag = 2346;
2234 range->encoding_size[0] = 5;
2235 range->encoding_size[1] = 13;
2236 range->num_encoding_sizes = 2;
2237 range->max_encoding_tokens = 4;
2239 range->pmp_flags = IW_POWER_ON;
2240 range->pmt_flags = IW_POWER_ON;
2243 range->we_version_source = WIRELESS_EXT;
2244 range->we_version_compiled = WIRELESS_EXT;
2245 range->retry_capa = IW_RETRY_LIMIT ;
2246 range->retry_flags = IW_RETRY_LIMIT;
2247 range->r_time_flags = 0;
2248 range->min_retry = 1;
2249 range->max_retry = 65535;
2250 range->avg_qual.qual = 50;
2251 range->avg_qual.level = 50;
2252 range->avg_qual.noise = 0;
2257 static int atmel_set_wap(struct net_device *dev,
2258 struct iw_request_info *info,
2259 struct sockaddr *awrq,
2262 struct atmel_private *priv = netdev_priv(dev);
2264 static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
2265 unsigned long flags;
2267 if (awrq->sa_family != ARPHRD_ETHER)
2270 if (memcmp(bcast, awrq->sa_data, 6) == 0) {
2271 del_timer_sync(&priv->management_timer);
2272 spin_lock_irqsave(&priv->irqlock, flags);
2273 atmel_scan(priv, 1);
2274 spin_unlock_irqrestore(&priv->irqlock, flags);
2278 for(i=0; i<priv->BSS_list_entries; i++) {
2279 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2280 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2282 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2285 del_timer_sync(&priv->management_timer);
2286 spin_lock_irqsave(&priv->irqlock, flags);
2287 atmel_join_bss(priv, i);
2288 spin_unlock_irqrestore(&priv->irqlock, flags);
2297 static int atmel_config_commit(struct net_device *dev,
2298 struct iw_request_info *info, /* NULL */
2299 void *zwrq, /* NULL */
2300 char *extra) /* NULL */
2302 return atmel_open(dev);
2305 static const iw_handler atmel_handler[] =
2307 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
2308 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
2309 (iw_handler) NULL, /* SIOCSIWNWID */
2310 (iw_handler) NULL, /* SIOCGIWNWID */
2311 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2312 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2313 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2314 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
2315 (iw_handler) NULL, /* SIOCSIWSENS */
2316 (iw_handler) NULL, /* SIOCGIWSENS */
2317 (iw_handler) NULL, /* SIOCSIWRANGE */
2318 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2319 (iw_handler) NULL, /* SIOCSIWPRIV */
2320 (iw_handler) NULL, /* SIOCGIWPRIV */
2321 (iw_handler) NULL, /* SIOCSIWSTATS */
2322 (iw_handler) NULL, /* SIOCGIWSTATS */
2323 (iw_handler) NULL, /* SIOCSIWSPY */
2324 (iw_handler) NULL, /* SIOCGIWSPY */
2325 (iw_handler) NULL, /* -- hole -- */
2326 (iw_handler) NULL, /* -- hole -- */
2327 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2328 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2329 (iw_handler) NULL, /* -- hole -- */
2330 (iw_handler) NULL, /* SIOCGIWAPLIST */
2331 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2332 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2333 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2334 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
2335 (iw_handler) NULL, /* SIOCSIWNICKN */
2336 (iw_handler) NULL, /* SIOCGIWNICKN */
2337 (iw_handler) NULL, /* -- hole -- */
2338 (iw_handler) NULL, /* -- hole -- */
2339 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2340 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2341 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2342 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2343 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2344 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
2345 (iw_handler) NULL, /* SIOCSIWTXPOW */
2346 (iw_handler) NULL, /* SIOCGIWTXPOW */
2347 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2348 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2349 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2350 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2351 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2352 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
2356 static const iw_handler atmel_private_handler[] =
2358 NULL, /* SIOCIWFIRSTPRIV */
2361 typedef struct atmel_priv_ioctl {
2363 unsigned char *data;
2368 #define ATMELFWL SIOCIWFIRSTPRIV
2369 #define ATMELIDIFC ATMELFWL + 1
2370 #define ATMELRD ATMELFWL + 2
2371 #define ATMELMAGIC 0x51807
2372 #define REGDOMAINSZ 20
2374 static const struct iw_priv_args atmel_private_args[] = {
2375 /*{ cmd, set_args, get_args, name } */
2376 { ATMELFWL, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof (atmel_priv_ioctl), IW_PRIV_TYPE_NONE, "atmelfwl" },
2377 { ATMELIDIFC, IW_PRIV_TYPE_NONE, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "atmelidifc" },
2378 { ATMELRD, IW_PRIV_TYPE_CHAR | REGDOMAINSZ, IW_PRIV_TYPE_NONE, "regdomain" },
2381 static const struct iw_handler_def atmel_handler_def =
2383 .num_standard = sizeof(atmel_handler)/sizeof(iw_handler),
2384 .num_private = sizeof(atmel_private_handler)/sizeof(iw_handler),
2385 .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
2386 .standard = (iw_handler *) atmel_handler,
2387 .private = (iw_handler *) atmel_private_handler,
2388 .private_args = (struct iw_priv_args *) atmel_private_args
2391 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2394 struct atmel_private *priv = netdev_priv(dev);
2395 atmel_priv_ioctl com;
2396 struct iwreq *wrq = (struct iwreq *) rq;
2397 unsigned char *new_firmware;
2398 char domain[REGDOMAINSZ+1];
2402 if(wrq->u.data.pointer) {
2403 /* Set the number of ioctl available */
2404 wrq->u.data.length = sizeof(atmel_private_args) / sizeof(atmel_private_args[0]);
2406 /* Copy structure to the user buffer */
2407 if (copy_to_user(wrq->u.data.pointer,
2408 (u_char *) atmel_private_args,
2409 sizeof(atmel_private_args)))
2415 wrq->u.param.value = ATMELMAGIC;
2419 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2424 if (!capable(CAP_NET_ADMIN)) {
2429 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2434 if (copy_from_user(new_firmware, com.data, com.len)) {
2440 kfree(priv->firmware);
2442 priv->firmware = new_firmware;
2443 priv->firmware_length = com.len;
2444 strncpy(priv->firmware_id, com.id, 31);
2445 priv->firmware_id[31] = '\0';
2449 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2454 if (!capable(CAP_NET_ADMIN)) {
2459 domain[REGDOMAINSZ] = 0;
2461 for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
2462 /* strcasecmp doesn't exist in the library */
2463 char *a = channel_table[i].name;
2468 if (tolower(c1) != tolower(c2))
2472 priv->config_reg_domain = channel_table[i].reg_domain;
2477 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2478 rc = atmel_open(dev);
2497 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2499 int old_state = priv->station_state;
2501 if (new_state == old_state)
2504 priv->station_state = new_state;
2506 if (new_state == STATION_STATE_READY) {
2507 netif_start_queue(priv->dev);
2508 netif_carrier_on(priv->dev);
2511 if (old_state == STATION_STATE_READY) {
2512 netif_carrier_off(priv->dev);
2513 if (netif_running(priv->dev))
2514 netif_stop_queue(priv->dev);
2515 priv->last_beacon_timestamp = 0;
2519 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2523 u8 SSID[MAX_SSID_LENGTH];
2527 u16 min_channel_time;
2528 u16 max_channel_time;
2533 memset(cmd.BSSID, 0xff, 6);
2535 if (priv->fast_scan) {
2536 cmd.SSID_size = priv->SSID_size;
2537 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2538 cmd.min_channel_time = cpu_to_le16(10);
2539 cmd.max_channel_time = cpu_to_le16(50);
2541 priv->BSS_list_entries = 0;
2543 cmd.min_channel_time = cpu_to_le16(10);
2544 cmd.max_channel_time = cpu_to_le16(120);
2550 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2552 cmd.channel = (priv->channel & 0x7f);
2553 cmd.scan_type = SCAN_TYPE_ACTIVE;
2554 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2555 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2557 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2559 /* This must come after all hardware access to avoid being messed up
2560 by stuff happening in interrupt context after we leave STATE_DOWN */
2561 atmel_enter_state(priv, STATION_STATE_SCANNING);
2564 static void join(struct atmel_private *priv, int type)
2568 u8 SSID[MAX_SSID_LENGTH];
2569 u8 BSS_type; /* this is a short in a scan command - wierd */
2576 cmd.SSID_size = priv->SSID_size;
2577 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2578 memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2579 cmd.channel = (priv->channel & 0x7f);
2580 cmd.BSS_type = type;
2581 cmd.timeout = cpu_to_le16(2000);
2583 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2587 static void start(struct atmel_private *priv, int type)
2591 u8 SSID[MAX_SSID_LENGTH];
2598 cmd.SSID_size = priv->SSID_size;
2599 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2600 memcpy(cmd.BSSID, priv->BSSID, 6);
2601 cmd.BSS_type = type;
2602 cmd.channel = (priv->channel & 0x7f);
2604 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2607 static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 channel)
2610 int new = capability & C80211_MGMT_CAPABILITY_ShortPreamble ?
2611 SHORT_PREAMBLE : LONG_PREAMBLE;
2613 if (priv->preamble != new) {
2614 priv->preamble = new;
2616 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2619 if (priv->channel != channel) {
2620 priv->channel = channel;
2622 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2626 priv->station_is_associated = 0;
2627 atmel_enter_state(priv, STATION_STATE_JOINNING);
2629 if (priv->operating_mode == IW_MODE_INFRA)
2630 join(priv, BSS_TYPE_INFRASTRUCTURE);
2632 join(priv, BSS_TYPE_AD_HOC);
2637 static void send_authentication_request(struct atmel_private *priv, u8 *challenge, int challenge_len)
2639 struct ieee802_11_hdr header;
2640 struct auth_body auth;
2642 header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT | IEEE802_11_STYPE_AUTH);
2643 header.duration_id = cpu_to_le16(0x8000);
2645 memcpy(header.addr1, priv->CurrentBSSID, 6);
2646 memcpy(header.addr2, priv->dev->dev_addr, 6);
2647 memcpy(header.addr3, priv->CurrentBSSID, 6);
2649 if (priv->wep_is_on) {
2650 auth.alg = C80211_MGMT_AAN_SHAREDKEY;
2651 /* no WEP for authentication frames with TrSeqNo 1 */
2652 if (priv->CurrentAuthentTransactionSeqNum != 1)
2653 header.frame_ctl |= cpu_to_le16(IEEE802_11_FCTL_WEP);
2655 auth.alg = C80211_MGMT_AAN_OPENSYSTEM;
2659 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2660 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2661 priv->CurrentAuthentTransactionSeqNum += 2;
2663 if (challenge_len != 0) {
2664 auth.el_id = 16; /* challenge_text */
2665 auth.chall_text_len = challenge_len;
2666 memcpy(auth.chall_text, challenge, challenge_len);
2667 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2669 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2673 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2677 struct ieee802_11_hdr header;
2678 struct ass_req_format {
2680 u16 listen_interval;
2681 u8 ap[6]; /* nothing after here directly accessible */
2684 u8 ssid[MAX_SSID_LENGTH];
2690 header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT |
2691 (is_reassoc ? IEEE802_11_STYPE_REASSOC_REQ : IEEE802_11_STYPE_ASSOC_REQ));
2692 header.duration_id = cpu_to_le16(0x8000);
2695 memcpy(header.addr1, priv->CurrentBSSID, 6);
2696 memcpy(header.addr2, priv->dev->dev_addr, 6);
2697 memcpy(header.addr3, priv->CurrentBSSID, 6);
2699 body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
2700 if (priv->wep_is_on)
2701 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
2702 if (priv->preamble == SHORT_PREAMBLE)
2703 body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
2705 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2707 /* current AP address - only in reassoc frame */
2709 memcpy(body.ap, priv->CurrentBSSID, 6);
2710 ssid_el_p = (u8 *)&body.ssid_el_id;
2711 bodysize = 18 + priv->SSID_size;
2713 ssid_el_p = (u8 *)&body.ap[0];
2714 bodysize = 12 + priv->SSID_size;
2717 ssid_el_p[0]= C80211_MGMT_ElementID_SSID;
2718 ssid_el_p[1] = priv->SSID_size;
2719 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2720 ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
2721 ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2722 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2724 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2727 static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee802_11_hdr *header)
2729 if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
2730 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2732 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2735 static int retrieve_bss(struct atmel_private *priv)
2738 int max_rssi = -128;
2741 if (priv->BSS_list_entries == 0)
2744 if (priv->connect_to_any_BSS) {
2745 /* Select a BSS with the max-RSSI but of the same type and of the same WEP mode
2746 and that it is not marked as 'bad' (i.e. we had previously failed to connect to
2747 this BSS with the settings that we currently use) */
2748 priv->current_BSS = 0;
2749 for(i=0; i<priv->BSS_list_entries; i++) {
2750 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2751 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2752 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2753 !(priv->BSSinfo[i].channel & 0x80)) {
2754 max_rssi = priv->BSSinfo[i].RSSI;
2755 priv->current_BSS = max_index = i;
2762 for(i=0; i<priv->BSS_list_entries; i++) {
2763 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2764 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2765 priv->operating_mode == priv->BSSinfo[i].BSStype &&
2766 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2767 if (priv->BSSinfo[i].RSSI >= max_rssi) {
2768 max_rssi = priv->BSSinfo[i].RSSI;
2777 static void store_bss_info(struct atmel_private *priv, struct ieee802_11_hdr *header,
2778 u16 capability, u16 beacon_period, u8 channel, u8 rssi,
2779 u8 ssid_len, u8 *ssid, int is_beacon)
2781 u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
2784 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2785 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
2788 /* If we process a probe and an entry from this BSS exists
2789 we will update the BSS entry with the info from this BSS.
2790 If we process a beacon we will only update RSSI */
2793 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2795 index = priv->BSS_list_entries++;
2796 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
2797 priv->BSSinfo[index].RSSI = rssi;
2799 if (rssi > priv->BSSinfo[index].RSSI)
2800 priv->BSSinfo[index].RSSI = rssi;
2805 priv->BSSinfo[index].channel = channel;
2806 priv->BSSinfo[index].beacon_period = beacon_period;
2807 priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
2808 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
2809 priv->BSSinfo[index].SSIDsize = ssid_len;
2811 if (capability & C80211_MGMT_CAPABILITY_IBSS)
2812 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
2813 else if (capability & C80211_MGMT_CAPABILITY_ESS)
2814 priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
2816 priv->BSSinfo[index].preamble = capability & C80211_MGMT_CAPABILITY_ShortPreamble ?
2817 SHORT_PREAMBLE : LONG_PREAMBLE;
2820 static void authenticate(struct atmel_private *priv, u16 frame_len)
2822 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
2823 u16 status = le16_to_cpu(auth->status);
2824 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
2826 if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) {
2828 if (priv->station_was_associated) {
2829 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2830 send_association_request(priv, 1);
2833 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2834 send_association_request(priv, 0);
2839 if (status == C80211_MGMT_SC_Success && priv->wep_is_on) {
2841 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
2844 if (trans_seq_no == 0x0002 &&
2845 auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
2846 send_authentication_request(priv, auth->chall_text, auth->chall_text_len);
2850 if (trans_seq_no == 0x0004) {
2851 if(priv->station_was_associated) {
2852 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
2853 send_association_request(priv, 1);
2856 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
2857 send_association_request(priv, 0);
2863 if (status == C80211_MGMT_SC_AuthAlgNotSupported && priv->connect_to_any_BSS) {
2866 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2868 if ((bss_index = retrieve_bss(priv)) != -1) {
2869 atmel_join_bss(priv, bss_index);
2875 priv->AuthenticationRequestRetryCnt = 0;
2876 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
2877 priv->station_is_associated = 0;
2880 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
2882 struct ass_resp_format {
2889 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
2891 u16 status = le16_to_cpu(ass_resp->status);
2892 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
2893 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
2895 if (frame_len < 8 + rates_len)
2898 if (status == C80211_MGMT_SC_Success) {
2899 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
2900 priv->AssociationRequestRetryCnt = 0;
2902 priv->ReAssociationRequestRetryCnt = 0;
2904 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
2905 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
2906 if (priv->power_mode == 0) {
2907 priv->listen_interval = 1;
2908 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
2909 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2911 priv->listen_interval = 2;
2912 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
2913 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
2916 priv->station_is_associated = 1;
2917 priv->station_was_associated = 1;
2918 atmel_enter_state(priv, STATION_STATE_READY);
2922 if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
2923 status != C80211_MGMT_SC_AssDeniedBSSRate &&
2924 status != C80211_MGMT_SC_SupportCapabilities &&
2925 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2926 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2927 priv->AssociationRequestRetryCnt++;
2928 send_association_request(priv, 0);
2932 if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
2933 status != C80211_MGMT_SC_AssDeniedBSSRate &&
2934 status != C80211_MGMT_SC_SupportCapabilities &&
2935 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
2936 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
2937 priv->ReAssociationRequestRetryCnt++;
2938 send_association_request(priv, 1);
2942 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
2943 priv->station_is_associated = 0;
2945 if(priv->connect_to_any_BSS) {
2947 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
2949 if ((bss_index = retrieve_bss(priv)) != -1)
2950 atmel_join_bss(priv, bss_index);
2955 void atmel_join_bss(struct atmel_private *priv, int bss_index)
2957 struct bss_info *bss = &priv->BSSinfo[bss_index];
2959 memcpy(priv->CurrentBSSID, bss->BSSID, 6);
2960 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
2962 /* The WPA stuff cares about the current AP address */
2964 build_wpa_mib(priv);
2966 /* When switching to AdHoc turn OFF Power Save if needed */
2968 if (bss->BSStype == IW_MODE_ADHOC &&
2969 priv->operating_mode != IW_MODE_ADHOC &&
2971 priv->power_mode = 0;
2972 priv->listen_interval = 1;
2973 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
2974 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
2977 priv->operating_mode = bss->BSStype;
2978 priv->channel = bss->channel & 0x7f;
2979 priv->beacon_period = bss->beacon_period;
2981 if (priv->preamble != bss->preamble) {
2982 priv->preamble = bss->preamble;
2983 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
2986 if (!priv->wep_is_on && bss->UsingWEP) {
2987 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
2988 priv->station_is_associated = 0;
2992 if (priv->wep_is_on && !bss->UsingWEP) {
2993 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
2994 priv->station_is_associated = 0;
2998 atmel_enter_state(priv, STATION_STATE_JOINNING);
3000 if (priv->operating_mode == IW_MODE_INFRA)
3001 join(priv, BSS_TYPE_INFRASTRUCTURE);
3003 join(priv, BSS_TYPE_AD_HOC);
3007 static void restart_search(struct atmel_private *priv)
3011 if (!priv->connect_to_any_BSS) {
3012 atmel_scan(priv, 1);
3014 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3016 if ((bss_index = retrieve_bss(priv)) != -1)
3017 atmel_join_bss(priv, bss_index);
3019 atmel_scan(priv, 0);
3024 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3026 u8 old = priv->wstats.qual.level;
3028 /* 502-rmfd-revd gives max signal level as 42, by experiment.
3029 This is going to break for other hardware variants. */
3031 rssi = rssi * 100 / 42;
3032 if((rssi + old) % 2)
3033 priv->wstats.qual.level = ((rssi + old)/2) + 1;
3035 priv->wstats.qual.level = ((rssi + old)/2);
3039 static void atmel_smooth_qual(struct atmel_private *priv)
3041 unsigned long time_diff = (jiffies - priv->last_qual)/HZ;
3042 while (time_diff--) {
3043 priv->last_qual += HZ;
3044 priv->wstats.qual.qual = priv->wstats.qual.qual/2;
3045 priv->wstats.qual.qual +=
3046 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3047 priv->beacons_this_sec = 0;
3051 /* deals with incoming managment frames. */
3052 static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
3053 u16 frame_len, u8 rssi)
3057 switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_STYPE) {
3058 case C80211_SUBTYPE_MGMT_BEACON :
3059 case C80211_SUBTYPE_MGMT_ProbeResponse:
3061 /* beacon frame has multiple variable-length fields -
3062 never let an engineer loose with a data structure design. */
3064 struct beacon_format {
3077 } *beacon = (struct beacon_format *)priv->rx_buf;
3079 u8 channel, rates_length, ssid_length;
3080 u64 timestamp = le64_to_cpu(beacon->timestamp);
3081 u16 beacon_interval = le16_to_cpu(beacon->interval);
3082 u16 capability = le16_to_cpu(beacon->capability);
3083 u8 *beaconp = priv->rx_buf;
3084 ssid_length = beacon->ssid_length;
3085 /* this blows chunks. */
3086 if (frame_len < 14 || frame_len < ssid_length + 15)
3088 rates_length = beaconp[beacon->ssid_length + 15];
3089 if (frame_len < ssid_length + rates_length + 18)
3091 if (ssid_length > MAX_SSID_LENGTH)
3093 channel = beaconp[ssid_length + rates_length + 18];
3095 if (priv->station_state == STATION_STATE_READY) {
3096 smooth_rssi(priv, rssi);
3097 if (is_frame_from_current_bss(priv, header)) {
3098 priv->beacons_this_sec++;
3099 atmel_smooth_qual(priv);
3100 if (priv->last_beacon_timestamp) {
3101 /* Note truncate this to 32 bits - kernel can't divide a long long */
3102 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3103 int beacons = beacon_delay / (beacon_interval * 1000);
3105 priv->wstats.miss.beacon += beacons - 1;
3107 priv->last_beacon_timestamp = timestamp;
3108 handle_beacon_probe(priv, capability, channel);
3112 if (priv->station_state == STATION_STATE_SCANNING )
3113 store_bss_info(priv, header, capability, beacon_interval, channel,
3114 rssi, ssid_length, &beacon->rates_el_id,
3115 subtype == C80211_SUBTYPE_MGMT_BEACON) ;
3119 case C80211_SUBTYPE_MGMT_Authentication:
3121 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3122 authenticate(priv, frame_len);
3126 case C80211_SUBTYPE_MGMT_ASS_RESPONSE:
3127 case C80211_SUBTYPE_MGMT_REASS_RESPONSE:
3129 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3130 priv->station_state == STATION_STATE_REASSOCIATING)
3131 associate(priv, frame_len, subtype);
3135 case C80211_SUBTYPE_MGMT_DISASSOSIATION:
3136 if (priv->station_is_associated &&
3137 priv->operating_mode == IW_MODE_INFRA &&
3138 is_frame_from_current_bss(priv, header)) {
3139 priv->station_was_associated = 0;
3140 priv->station_is_associated = 0;
3142 atmel_enter_state(priv, STATION_STATE_JOINNING);
3143 join(priv, BSS_TYPE_INFRASTRUCTURE);
3148 case C80211_SUBTYPE_MGMT_Deauthentication:
3149 if (priv->operating_mode == IW_MODE_INFRA &&
3150 is_frame_from_current_bss(priv, header)) {
3151 priv->station_was_associated = 0;
3153 atmel_enter_state(priv, STATION_STATE_JOINNING);
3154 join(priv, BSS_TYPE_INFRASTRUCTURE);
3161 /* run when timer expires */
3162 static void atmel_management_timer(u_long a)
3164 struct net_device *dev = (struct net_device *) a;
3165 struct atmel_private *priv = netdev_priv(dev);
3166 unsigned long flags;
3168 /* Check if the card has been yanked. */
3169 if (priv->card && priv->present_callback &&
3170 !(*priv->present_callback)(priv->card))
3173 spin_lock_irqsave(&priv->irqlock, flags);
3175 switch (priv->station_state) {
3177 case STATION_STATE_AUTHENTICATING:
3178 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3179 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3180 priv->station_is_associated = 0;
3181 priv->AuthenticationRequestRetryCnt = 0;
3182 restart_search(priv);
3184 priv->AuthenticationRequestRetryCnt++;
3185 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3186 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3187 send_authentication_request(priv, NULL, 0);
3192 case STATION_STATE_ASSOCIATING:
3193 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3194 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3195 priv->station_is_associated = 0;
3196 priv->AssociationRequestRetryCnt = 0;
3197 restart_search(priv);
3199 priv->AssociationRequestRetryCnt++;
3200 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3201 send_association_request(priv, 0);
3206 case STATION_STATE_REASSOCIATING:
3207 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3208 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3209 priv->station_is_associated = 0;
3210 priv->ReAssociationRequestRetryCnt = 0;
3211 restart_search(priv);
3213 priv->ReAssociationRequestRetryCnt++;
3214 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3215 send_association_request(priv, 1);
3224 spin_unlock_irqrestore(&priv->irqlock, flags);
3227 static void atmel_command_irq(struct atmel_private *priv)
3229 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3230 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3233 if (status == CMD_STATUS_IDLE ||
3234 status == CMD_STATUS_IN_PROGRESS)
3240 if (status == CMD_STATUS_COMPLETE) {
3241 priv->station_was_associated = priv->station_is_associated;
3242 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3243 (u8 *)priv->CurrentBSSID, 6);
3244 atmel_enter_state(priv, STATION_STATE_READY);
3249 fast_scan = priv->fast_scan;
3250 priv->fast_scan = 0;
3252 if (status != CMD_STATUS_COMPLETE) {
3253 atmel_scan(priv, 1);
3255 int bss_index = retrieve_bss(priv);
3256 if (bss_index != -1) {
3257 atmel_join_bss(priv, bss_index);
3258 } else if (priv->operating_mode == IW_MODE_ADHOC &&
3259 priv->SSID_size != 0) {
3260 start(priv, BSS_TYPE_AD_HOC);
3262 priv->fast_scan = !fast_scan;
3263 atmel_scan(priv, 1);
3265 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3269 case CMD_SiteSurvey:
3270 priv->fast_scan = 0;
3272 if (status != CMD_STATUS_COMPLETE)
3275 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3276 if (priv->station_is_associated) {
3277 atmel_enter_state(priv, STATION_STATE_READY);
3279 atmel_scan(priv, 1);
3284 if (status == CMD_STATUS_COMPLETE) {
3285 if (priv->operating_mode == IW_MODE_ADHOC) {
3286 priv->station_was_associated = priv->station_is_associated;
3287 atmel_enter_state(priv, STATION_STATE_READY);
3289 priv->AuthenticationRequestRetryCnt = 0;
3290 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3292 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3293 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3294 send_authentication_request(priv, NULL, 0);
3299 atmel_scan(priv, 1);
3304 static int atmel_wakeup_firmware(struct atmel_private *priv)
3306 struct host_info_struct *iface = &priv->host_info;
3310 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3311 atmel_set_gcr(priv->dev, GCR_REMAP);
3313 /* wake up on-board processor */
3314 atmel_clear_gcr(priv->dev, 0x0040);
3315 atmel_write16(priv->dev, BSR, BSS_SRAM);
3317 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3320 /* and wait for it */
3321 for (i = LOOP_RETRY_LIMIT; i; i--) {
3322 mr1 = atmel_read16(priv->dev, MR1);
3323 mr3 = atmel_read16(priv->dev, MR3);
3325 if (mr3 & MAC_BOOT_COMPLETE)
3327 if (mr1 & MAC_BOOT_COMPLETE &&
3328 priv->bus_type == BUS_TYPE_PCCARD)
3333 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3337 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3338 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3342 /* now check for completion of MAC initialization through
3343 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3344 MAC initialization, check completion status, set interrupt mask,
3345 enables interrupts and calls Tx and Rx initialization functions */
3347 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3349 for (i = LOOP_RETRY_LIMIT; i; i--) {
3350 mr1 = atmel_read16(priv->dev, MR1);
3351 mr3 = atmel_read16(priv->dev, MR3);
3353 if (mr3 & MAC_INIT_COMPLETE)
3355 if (mr1 & MAC_INIT_COMPLETE &&
3356 priv->bus_type == BUS_TYPE_PCCARD)
3361 printk(KERN_ALERT "%s: MAC failed to initialise.\n", priv->dev->name);
3365 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3366 if ((mr3 & MAC_INIT_COMPLETE) &&
3367 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3368 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3371 if ((mr1 & MAC_INIT_COMPLETE) &&
3372 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3373 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3377 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3378 priv->host_info_base, sizeof(*iface));
3380 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3381 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3382 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3383 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3384 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3385 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3386 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3387 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3388 iface->build_version = le16_to_cpu(iface->build_version);
3389 iface->command_pos = le16_to_cpu(iface->command_pos);
3390 iface->major_version = le16_to_cpu(iface->major_version);
3391 iface->minor_version = le16_to_cpu(iface->minor_version);
3392 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3393 iface->mac_status = le16_to_cpu(iface->mac_status);
3398 /* determine type of memory and MAC address */
3399 static int probe_atmel_card(struct net_device *dev)
3402 struct atmel_private *priv = netdev_priv(dev);
3405 if (priv->bus_type == BUS_TYPE_PCCARD)
3406 atmel_write16(dev, GCR, 0x0060);
3408 atmel_write16(dev, GCR, 0x0040);
3411 if (atmel_read16(dev, MR2) == 0) {
3412 /* No stored firmware so load a small stub which just
3413 tells us the MAC address */
3415 priv->card_type = CARD_TYPE_EEPROM;
3416 atmel_write16(dev, BSR, BSS_IRAM);
3417 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3418 atmel_set_gcr(dev, GCR_REMAP);
3419 atmel_clear_gcr(priv->dev, 0x0040);
3420 atmel_write16(dev, BSR, BSS_SRAM);
3421 for (i = LOOP_RETRY_LIMIT; i; i--)
3422 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3425 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3427 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3428 /* got address, now squash it again until the network
3429 interface is opened */
3430 if (priv->bus_type == BUS_TYPE_PCCARD)
3431 atmel_write16(dev, GCR, 0x0060);
3432 atmel_write16(dev, GCR, 0x0040);
3435 } else if (atmel_read16(dev, MR4) == 0) {
3436 /* Mac address easy in this case. */
3437 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3438 atmel_write16(dev, BSR, 1);
3439 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3440 atmel_write16(dev, BSR, 0x200);
3443 /* Standard firmware in flash, boot it up and ask
3444 for the Mac Address */
3445 priv->card_type = CARD_TYPE_SPI_FLASH;
3446 if (atmel_wakeup_firmware(priv)) {
3447 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3449 /* got address, now squash it again until the network
3450 interface is opened */
3451 if (priv->bus_type == BUS_TYPE_PCCARD)
3452 atmel_write16(dev, GCR, 0x0060);
3453 atmel_write16(dev, GCR, 0x0040);
3459 if (dev->dev_addr[0] == 0xFF) {
3460 u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
3461 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3462 memcpy(dev->dev_addr, default_mac, 6);
3464 printk(KERN_INFO "%s: MAC address %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
3466 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3467 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
3474 static void build_wep_mib(struct atmel_private *priv)
3475 /* Move the encyption information on the MIB structure.
3476 This routine is for the pre-WPA firmware: later firmware has
3477 a different format MIB and a different routine. */
3479 struct { /* NB this is matched to the hardware, don't change. */
3481 u8 default_key; /* 0..3 */
3483 u8 exclude_unencrypted;
3485 u32 WEPICV_error_count;
3486 u32 WEP_excluded_count;
3488 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3489 u8 encryption_level; /* 0, 1, 2 */
3494 mib.wep_is_on = priv->wep_is_on;
3495 if (priv->wep_is_on) {
3496 if (priv->wep_key_len[priv->default_key] > 5)
3497 mib.encryption_level = 2;
3499 mib.encryption_level = 1;
3501 mib.encryption_level = 0;
3504 mib.default_key = priv->default_key;
3505 mib.exclude_unencrypted = priv->exclude_unencrypted;
3507 for(i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3508 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3510 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3513 static void build_wpa_mib(struct atmel_private *priv)
3515 /* This is for the later (WPA enabled) firmware. */
3517 struct { /* NB this is matched to the hardware, don't change. */
3518 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3519 u8 receiver_address[6];
3521 u8 default_key; /* 0..3 */
3523 u8 exclude_unencrypted;
3527 u32 WEPICV_error_count;
3528 u32 WEP_excluded_count;
3535 mib.wep_is_on = priv->wep_is_on;
3536 mib.exclude_unencrypted = priv->exclude_unencrypted;
3537 memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3539 /* zero all the keys before adding in valid ones. */
3540 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3542 if (priv->wep_is_on) {
3543 /* There's a comment in the Atmel code to the effect that this is only valid
3544 when still using WEP, it may need to be set to something to use WPA */
3545 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3547 mib.default_key = mib.group_key = 255;
3548 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3549 if (priv->wep_key_len[i] > 0) {
3550 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3551 if (i == priv->default_key) {
3552 mib.default_key = i;
3553 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3554 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3557 priv->group_cipher_suite = priv->pairwise_cipher_suite;
3558 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3559 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3563 if (mib.default_key == 255)
3564 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3565 if (mib.group_key == 255)
3566 mib.group_key = mib.default_key;
3570 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3573 static int reset_atmel_card(struct net_device *dev)
3575 /* do everything necessary to wake up the hardware, including
3576 waiting for the lightning strike and throwing the knife switch....
3578 set all the Mib values which matter in the card to match
3579 their settings in the atmel_private structure. Some of these
3580 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3581 can only be changed by tearing down the world and coming back through
3584 This routine is also responsible for initialising some
3585 hardware-specific fields in the atmel_private structure,
3586 including a copy of the firmware's hostinfo stucture
3587 which is the route into the rest of the firmare datastructures. */
3589 struct atmel_private *priv = netdev_priv(dev);
3592 /* data to add to the firmware names, in priority order
3593 this implemenents firmware versioning */
3595 static char *firmware_modifier[] = {
3602 if (priv->bus_type == BUS_TYPE_PCCARD)
3603 atmel_write16(priv->dev, GCR, 0x0060);
3605 /* stop card , disable interrupts */
3606 atmel_write16(priv->dev, GCR, 0x0040);
3608 if (priv->card_type == CARD_TYPE_EEPROM) {
3609 /* copy in firmware if needed */
3610 const struct firmware *fw_entry = NULL;
3612 int len = priv->firmware_length;
3613 if (!(fw = priv->firmware)) {
3614 if (strlen(priv->firmware_template) == 0) {
3615 if (strlen(priv->firmware_id) == 0) {
3617 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3620 "%s: if not, use the firmware= module parameter.\n",
3622 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3624 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
3626 "%s: firmware %s is missing, cannot continue.\n",
3627 dev->name, priv->firmware_id);
3634 for (i = 0; firmware_modifier[i]; i++) {
3635 sprintf(priv->firmware_id, priv->firmware_template, firmware_modifier[i]);
3636 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0)
3639 if (!firmware_modifier[i]) {
3641 "%s: firmware %s is missing, cannot start.\n",
3642 dev->name, priv->firmware_id);
3643 priv->firmware_id[0] = '\0';
3646 priv->firmware_template[0] = '\0';
3649 fw = fw_entry->data;
3650 len = fw_entry->size;
3653 if (len <= 0x6000) {
3654 atmel_write16(priv->dev, BSR, BSS_IRAM);
3655 atmel_copy_to_card(priv->dev, 0, fw, len);
3656 atmel_set_gcr(priv->dev, GCR_REMAP);
3659 atmel_set_gcr(priv->dev, GCR_REMAP);
3660 atmel_write16(priv->dev, BSR, BSS_IRAM);
3661 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3662 atmel_write16(priv->dev, BSR, 0x2ff);
3663 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3667 release_firmware(fw_entry);
3670 if (!atmel_wakeup_firmware(priv))
3673 /* Check the version and set the correct flag for wpa stuff,
3674 old and new firmware is incompatible.
3675 The pre-wpa 3com firmware reports major version 5,
3676 the wpa 3com firmware is major version 4 and doesn't need
3677 the 3com broken-ness filter. */
3678 priv->use_wpa = (priv->host_info.major_version == 4);
3679 priv->radio_on_broken = (priv->host_info.major_version == 5);
3681 /* unmask all irq sources */
3682 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3684 /* int Tx system and enable Tx */
3685 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3686 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3687 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3688 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3690 priv->tx_desc_free = priv->host_info.tx_desc_count;
3691 priv->tx_desc_head = 0;
3692 priv->tx_desc_tail = 0;
3693 priv->tx_desc_previous = 0;
3694 priv->tx_free_mem = priv->host_info.tx_buff_size;
3695 priv->tx_buff_head = 0;
3696 priv->tx_buff_tail = 0;
3698 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3699 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3700 configuration | FUNC_CTRL_TxENABLE);
3702 /* init Rx system and enable */
3703 priv->rx_desc_head = 0;
3705 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3706 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3707 configuration | FUNC_CTRL_RxENABLE);
3709 if (!priv->radio_on_broken) {
3710 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3711 CMD_STATUS_REJECTED_RADIO_OFF) {
3713 "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
3719 /* set up enough MIB values to run. */
3720 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
3721 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
3722 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
3723 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
3724 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
3725 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
3726 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
3727 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
3728 priv->dev->dev_addr, 6);
3729 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3730 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3731 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
3732 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
3733 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
3735 build_wpa_mib(priv);
3737 build_wep_mib(priv);
3742 static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3745 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
3748 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
3749 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
3752 static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size)
3756 atmel_send_command(priv, command, cmd, cmd_size);
3758 for (i = 5000; i; i--) {
3759 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3760 if (status != CMD_STATUS_IDLE &&
3761 status != CMD_STATUS_IN_PROGRESS)
3767 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
3768 status = CMD_STATUS_HOST_ERROR;
3770 if (command != CMD_EnableRadio)
3771 status = CMD_STATUS_COMPLETE;
3777 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
3779 struct get_set_mib m;
3784 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3785 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
3788 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
3790 struct get_set_mib m;
3796 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
3799 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data)
3801 struct get_set_mib m;
3806 m.data[1] = data >> 8;
3808 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
3811 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3813 struct get_set_mib m;
3818 if (data_len > MIB_MAX_DATA_BYTES)
3819 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3821 memcpy(m.data, data, data_len);
3822 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3825 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
3827 struct get_set_mib m;
3832 if (data_len > MIB_MAX_DATA_BYTES)
3833 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
3835 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
3836 atmel_copy_to_host(priv->dev, data,
3837 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
3840 static void atmel_writeAR(struct net_device *dev, u16 data)
3843 outw(data, dev->base_addr + AR);
3844 /* Address register appears to need some convincing..... */
3845 for (i = 0; data != inw(dev->base_addr + AR) && i<10; i++)
3846 outw(data, dev->base_addr + AR);
3849 static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len)
3852 atmel_writeAR(dev, dest);
3854 atmel_write8(dev, DR, *src);
3857 for (i = len; i > 1 ; i -= 2) {
3860 atmel_write16(dev, DR, lb | (hb << 8));
3863 atmel_write8(dev, DR, *src);
3866 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len)
3869 atmel_writeAR(dev, src);
3871 *dest = atmel_read8(dev, DR);
3874 for (i = len; i > 1 ; i -= 2) {
3875 u16 hw = atmel_read16(dev, DR);
3880 *dest = atmel_read8(dev, DR);
3883 static void atmel_set_gcr(struct net_device *dev, u16 mask)
3885 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
3888 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
3890 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
3893 static int atmel_lock_mac(struct atmel_private *priv)
3897 for (i = 5000; i; i--) {
3898 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
3903 if (!i) return 0; /* timed out */
3905 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
3906 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
3907 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
3908 if (!j--) return 0; /* timed out */
3915 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
3917 atmel_writeAR(priv->dev, pos);
3918 atmel_write16(priv->dev, DR, data); /* card is little-endian */
3919 atmel_write16(priv->dev, DR, data >> 16);
3922 /***************************************************************************/
3923 /* There follows the source form of the MAC address reading firmware */
3924 /***************************************************************************/
3927 /* Copyright 2003 Matthew T. Russotto */
3928 /* But derived from the Atmel 76C502 firmware written by Atmel and */
3929 /* included in "atmel wireless lan drivers" package */
3931 This file is part of net.russotto.AtmelMACFW, hereto referred to
3934 AtmelMACFW is free software; you can redistribute it and/or modify
3935 it under the terms of the GNU General Public License version 2
3936 as published by the Free Software Foundation.
3938 AtmelMACFW is distributed in the hope that it will be useful,
3939 but WITHOUT ANY WARRANTY; without even the implied warranty of
3940 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3941 GNU General Public License for more details.
3943 You should have received a copy of the GNU General Public License
3944 along with AtmelMACFW; if not, write to the Free Software
3945 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
3947 ****************************************************************************/
3948 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
3949 /* It will probably work on the 76C504 and 76C502 RFMD_3COM */
3950 /* It only works on SPI EEPROM versions of the card. */
3952 /* This firmware initializes the SPI controller and clock, reads the MAC */
3953 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
3954 /* address in MR2, and sets MR3 to 0x10 to indicate it is done */
3955 /* It also puts a complete copy of the EEPROM in SRAM with the offset in */
3956 /* MR4, for investigational purposes (maybe we can determine chip type */
3960 .set MRBASE, 0x8000000
3961 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
3962 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
3963 .set SRAM_BASE, 0x02000000
3964 .set SP_BASE, 0x0F300000
3965 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
3966 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
3967 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
3968 .set STACK_BASE, 0x5600
3970 .set SP_TDRE, 2 /* status register bit -- TDR empty */
3971 .set SP_RDRF, 1 /* status register bit -- RDR full */
3974 .set SP_CR, 0 /* control register */
3975 .set SP_MR, 4 /* mode register */
3976 .set SP_RDR, 0x08 /* Read Data Register */
3977 .set SP_TDR, 0x0C /* Transmit Data Register */
3978 .set SP_CSR0, 0x30 /* chip select registers */
3982 .set NVRAM_CMD_RDSR, 5 /* read status register */
3983 .set NVRAM_CMD_READ, 3 /* read data */
3984 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
3985 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
3986 serial output, since SO is normally high. But it
3987 does cause 8 clock cycles and thus 8 bits to be
3988 clocked in to the chip. See Atmel's SPI
3989 controller (e.g. AT91M55800) timing and 4K
3990 SPI EEPROM manuals */
3992 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
3993 .set NVRAM_IMAGE, 0x02000200
3994 .set NVRAM_LENGTH, 0x0200
3995 .set MAC_ADDRESS_MIB, SRAM_BASE
3996 .set MAC_ADDRESS_LENGTH, 6
3997 .set MAC_BOOT_FLAG, 0x10
4019 mov r0, #CPSR_INITIAL
4020 msr CPSR_c, r0 /* This is probably unnecessary */
4022 /* I'm guessing this is initializing clock generator electronics for SPI */
4023 ldr r0, =SPI_CGEN_BASE
4048 ldr r1, =MAC_ADDRESS_MIB
4050 ldr r1, =NVRAM_IMAGE
4052 mov r1, #MAC_BOOT_FLAG
4055 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4058 mov r2, #0 /* 0th bytes of NVRAM */
4059 mov r3, #NVRAM_LENGTH
4060 mov r1, #0 /* not used in routine */
4061 ldr r0, =NVRAM_IMAGE
4067 .func Get_MAC_Addr, GET_MAC_ADDR
4070 mov r2, #0x120 /* address of MAC Address within NVRAM */
4071 mov r3, #MAC_ADDRESS_LENGTH
4072 mov r1, #0 /* not used in routine */
4073 ldr r0, =MAC_ADDRESS_MIB
4079 .func Delay9, DELAY9
4081 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
4090 .func SP_Init, SP_INIT
4094 str r1, [r0, #SP_CR] /* reset the SPI */
4096 str r1, [r0, #SP_CR] /* release SPI from reset state */
4098 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4099 str r1, [r0, #SP_CR] /* enable the SPI */
4101 /* My guess would be this turns on the SPI clock */
4102 ldr r3, =SPI_CGEN_BASE
4108 str r1, [r0, #SP_CSR0]
4110 str r1, [r0, #SP_CSR1]
4111 str r1, [r0, #SP_CSR2]
4112 str r1, [r0, #SP_CSR3]
4113 ldr r1, [r0, #SP_SR]
4114 ldr r0, [r0, #SP_RDR]
4117 .func NVRAM_Init, NVRAM_INIT
4120 ldr r0, [r1, #SP_RDR]
4121 mov r0, #NVRAM_CMD_RDSR
4122 str r0, [r1, #SP_TDR]
4124 ldr r0, [r1, #SP_SR]
4128 mov r0, #SPI_8CLOCKS
4129 str r0, [r1, #SP_TDR]
4131 ldr r0, [r1, #SP_SR]
4135 ldr r0, [r1, #SP_RDR]
4137 ldr r0, [r1, #SP_SR]
4141 ldr r0, [r1, #SP_RDR]
4146 .func NVRAM_Xfer, NVRAM_XFER
4147 /* r0 = dest address */
4149 /* r2 = src address within NVRAM */
4152 stmdb sp!, {r4, r5, lr}
4153 mov r5, r0 /* save r0 (dest address) */
4154 mov r4, r3 /* save r3 (length) */
4155 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4157 add r0, r0, #NVRAM_CMD_READ
4158 ldr r1, =NVRAM_SCRATCH
4159 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4160 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
4163 tst r0, #NVRAM_SR_RDY
4167 mov r2, r4 /* length */
4168 mov r1, r5 /* dest address */
4169 mov r0, #2 /* bytes to transfer in command */
4171 ldmia sp!, {r4, r5, lr}
4175 .func NVRAM_Xfer2, NVRAM_XFER2
4177 stmdb sp!, {r4, r5, r6, lr}
4182 ldr r5, =NVRAM_SCRATCH
4185 str r6, [r4, #SP_TDR]
4187 ldr r6, [r4, #SP_SR]
4191 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4194 mov r3, #SPI_8CLOCKS
4195 str r3, [r4, #SP_TDR]
4196 ldr r0, [r4, #SP_RDR]
4198 ldr r0, [r4, #SP_SR]
4201 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 */
4203 cmp r2, #0 /* r2 is # of bytes to copy in */
4206 ldr r5, [r4, #SP_SR]
4209 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
4211 ldr r5, [r4, #SP_SR]
4214 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4215 strb r5, [r1], #1 /* postindexed */
4218 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4222 ldmia sp!, {r4, r5, r6, lr}