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1/*** -*- linux-c -*- **********************************************************
2
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003-2004 Simon Kelley.
7
8 This code was developed from version 2.1.1 of the Atmel drivers,
9 released by Atmel corp. under the GPL in December 2002. It also
10 includes code from the Linux aironet drivers (C) Benjamin Reed,
11 and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
12 extensions, (C) Jean Tourrilhes.
13
14 The firmware module for reading the MAC address of the card comes from
15 net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
16 by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
17 This file contains the module in binary form and, under the terms
18 of the GPL, in source form. The source is located at the end of the file.
19
20 This program is free software; you can redistribute it and/or modify
21 it under the terms of the GNU General Public License as published by
22 the Free Software Foundation; either version 2 of the License, or
23 (at your option) any later version.
24
25 This software is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
29
30 You should have received a copy of the GNU General Public License
31 along with Atmel wireless lan drivers; if not, see
32 <http://www.gnu.org/licenses/>.
33
34 For all queries about this code, please contact the current author,
35 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
36
37 Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
38 hardware used during development of this driver.
39
40******************************************************************************/
41
42#include <linux/interrupt.h>
43
44#include <linux/kernel.h>
45#include <linux/ptrace.h>
46#include <linux/slab.h>
47#include <linux/string.h>
48#include <linux/timer.h>
49#include <asm/byteorder.h>
50#include <asm/io.h>
51#include <linux/uaccess.h>
52#include <linux/module.h>
53#include <linux/netdevice.h>
54#include <linux/etherdevice.h>
55#include <linux/skbuff.h>
56#include <linux/if_arp.h>
57#include <linux/ioport.h>
58#include <linux/fcntl.h>
59#include <linux/delay.h>
60#include <linux/wireless.h>
61#include <net/iw_handler.h>
62#include <linux/crc32.h>
63#include <linux/proc_fs.h>
64#include <linux/seq_file.h>
65#include <linux/device.h>
66#include <linux/moduleparam.h>
67#include <linux/firmware.h>
68#include <linux/jiffies.h>
69#include <net/cfg80211.h>
70#include "atmel.h"
71
72#define DRIVER_MAJOR 0
73#define DRIVER_MINOR 98
74
75MODULE_AUTHOR("Simon Kelley");
76MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
77MODULE_LICENSE("GPL");
78
79/* The name of the firmware file to be loaded
80 over-rides any automatic selection */
81static char *firmware = NULL;
82module_param(firmware, charp, 0);
83
84/* table of firmware file names */
85static struct {
86 AtmelFWType fw_type;
87 const char *fw_file;
88 const char *fw_file_ext;
89} fw_table[] = {
90 { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
91 { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
92 { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
93 { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
94 { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
95 { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
96 { ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" },
97 { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
98 { ATMEL_FW_TYPE_NONE, NULL, NULL }
99};
100MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
101MODULE_FIRMWARE("atmel_at76c502.bin");
102MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
103MODULE_FIRMWARE("atmel_at76c502d.bin");
104MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
105MODULE_FIRMWARE("atmel_at76c502e.bin");
106MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
107MODULE_FIRMWARE("atmel_at76c502_3com.bin");
108MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
109MODULE_FIRMWARE("atmel_at76c504.bin");
110MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
111MODULE_FIRMWARE("atmel_at76c504_2958.bin");
112MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
113MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
114MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
115MODULE_FIRMWARE("atmel_at76c506.bin");
116
117#define MAX_SSID_LENGTH 32
118#define MGMT_JIFFIES (256 * HZ / 100)
119
120#define MAX_BSS_ENTRIES 64
121
122/* registers */
123#define GCR 0x00 /* (SIR0) General Configuration Register */
124#define BSR 0x02 /* (SIR1) Bank Switching Select Register */
125#define AR 0x04
126#define DR 0x08
127#define MR1 0x12 /* Mirror Register 1 */
128#define MR2 0x14 /* Mirror Register 2 */
129#define MR3 0x16 /* Mirror Register 3 */
130#define MR4 0x18 /* Mirror Register 4 */
131
132#define GPR1 0x0c
133#define GPR2 0x0e
134#define GPR3 0x10
135/*
136 * Constants for the GCR register.
137 */
138#define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */
139#define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */
140#define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */
141#define GCR_ENINT 0x0002 /* Enable Interrupts */
142#define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */
143
144#define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */
145#define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */
146/*
147 *Constants for the MR registers.
148 */
149#define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */
150#define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */
151#define MAC_INIT_OK 0x0002 /* MAC boot has been completed */
152
153#define MIB_MAX_DATA_BYTES 212
154#define MIB_HEADER_SIZE 4 /* first four fields */
155
156struct get_set_mib {
157 u8 type;
158 u8 size;
159 u8 index;
160 u8 reserved;
161 u8 data[MIB_MAX_DATA_BYTES];
162};
163
164struct rx_desc {
165 u32 Next;
166 u16 MsduPos;
167 u16 MsduSize;
168
169 u8 State;
170 u8 Status;
171 u8 Rate;
172 u8 Rssi;
173 u8 LinkQuality;
174 u8 PreambleType;
175 u16 Duration;
176 u32 RxTime;
177};
178
179#define RX_DESC_FLAG_VALID 0x80
180#define RX_DESC_FLAG_CONSUMED 0x40
181#define RX_DESC_FLAG_IDLE 0x00
182
183#define RX_STATUS_SUCCESS 0x00
184
185#define RX_DESC_MSDU_POS_OFFSET 4
186#define RX_DESC_MSDU_SIZE_OFFSET 6
187#define RX_DESC_FLAGS_OFFSET 8
188#define RX_DESC_STATUS_OFFSET 9
189#define RX_DESC_RSSI_OFFSET 11
190#define RX_DESC_LINK_QUALITY_OFFSET 12
191#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
192#define RX_DESC_DURATION_OFFSET 14
193#define RX_DESC_RX_TIME_OFFSET 16
194
195struct tx_desc {
196 u32 NextDescriptor;
197 u16 TxStartOfFrame;
198 u16 TxLength;
199
200 u8 TxState;
201 u8 TxStatus;
202 u8 RetryCount;
203
204 u8 TxRate;
205
206 u8 KeyIndex;
207 u8 ChiperType;
208 u8 ChipreLength;
209 u8 Reserved1;
210
211 u8 Reserved;
212 u8 PacketType;
213 u16 HostTxLength;
214};
215
216#define TX_DESC_NEXT_OFFSET 0
217#define TX_DESC_POS_OFFSET 4
218#define TX_DESC_SIZE_OFFSET 6
219#define TX_DESC_FLAGS_OFFSET 8
220#define TX_DESC_STATUS_OFFSET 9
221#define TX_DESC_RETRY_OFFSET 10
222#define TX_DESC_RATE_OFFSET 11
223#define TX_DESC_KEY_INDEX_OFFSET 12
224#define TX_DESC_CIPHER_TYPE_OFFSET 13
225#define TX_DESC_CIPHER_LENGTH_OFFSET 14
226#define TX_DESC_PACKET_TYPE_OFFSET 17
227#define TX_DESC_HOST_LENGTH_OFFSET 18
228
229/*
230 * Host-MAC interface
231 */
232
233#define TX_STATUS_SUCCESS 0x00
234
235#define TX_FIRM_OWN 0x80
236#define TX_DONE 0x40
237
238#define TX_ERROR 0x01
239
240#define TX_PACKET_TYPE_DATA 0x01
241#define TX_PACKET_TYPE_MGMT 0x02
242
243#define ISR_EMPTY 0x00 /* no bits set in ISR */
244#define ISR_TxCOMPLETE 0x01 /* packet transmitted */
245#define ISR_RxCOMPLETE 0x02 /* packet received */
246#define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */
247#define ISR_FATAL_ERROR 0x08 /* Fatal error */
248#define ISR_COMMAND_COMPLETE 0x10 /* command completed */
249#define ISR_OUT_OF_RANGE 0x20 /* command completed */
250#define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */
251#define ISR_GENERIC_IRQ 0x80
252
253#define Local_Mib_Type 0x01
254#define Mac_Address_Mib_Type 0x02
255#define Mac_Mib_Type 0x03
256#define Statistics_Mib_Type 0x04
257#define Mac_Mgmt_Mib_Type 0x05
258#define Mac_Wep_Mib_Type 0x06
259#define Phy_Mib_Type 0x07
260#define Multi_Domain_MIB 0x08
261
262#define MAC_MGMT_MIB_CUR_BSSID_POS 14
263#define MAC_MIB_FRAG_THRESHOLD_POS 8
264#define MAC_MIB_RTS_THRESHOLD_POS 10
265#define MAC_MIB_SHORT_RETRY_POS 16
266#define MAC_MIB_LONG_RETRY_POS 17
267#define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
268#define MAC_MGMT_MIB_BEACON_PER_POS 0
269#define MAC_MGMT_MIB_STATION_ID_POS 6
270#define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
271#define MAC_MGMT_MIB_CUR_BSSID_POS 14
272#define MAC_MGMT_MIB_PS_MODE_POS 53
273#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
274#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
275#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
276#define PHY_MIB_CHANNEL_POS 14
277#define PHY_MIB_RATE_SET_POS 20
278#define PHY_MIB_REG_DOMAIN_POS 26
279#define LOCAL_MIB_AUTO_TX_RATE_POS 3
280#define LOCAL_MIB_SSID_SIZE 5
281#define LOCAL_MIB_TX_PROMISCUOUS_POS 6
282#define LOCAL_MIB_TX_MGMT_RATE_POS 7
283#define LOCAL_MIB_TX_CONTROL_RATE_POS 8
284#define LOCAL_MIB_PREAMBLE_TYPE 9
285#define MAC_ADDR_MIB_MAC_ADDR_POS 0
286
287#define CMD_Set_MIB_Vars 0x01
288#define CMD_Get_MIB_Vars 0x02
289#define CMD_Scan 0x03
290#define CMD_Join 0x04
291#define CMD_Start 0x05
292#define CMD_EnableRadio 0x06
293#define CMD_DisableRadio 0x07
294#define CMD_SiteSurvey 0x0B
295
296#define CMD_STATUS_IDLE 0x00
297#define CMD_STATUS_COMPLETE 0x01
298#define CMD_STATUS_UNKNOWN 0x02
299#define CMD_STATUS_INVALID_PARAMETER 0x03
300#define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
301#define CMD_STATUS_TIME_OUT 0x07
302#define CMD_STATUS_IN_PROGRESS 0x08
303#define CMD_STATUS_REJECTED_RADIO_OFF 0x09
304#define CMD_STATUS_HOST_ERROR 0xFF
305#define CMD_STATUS_BUSY 0xFE
306
307#define CMD_BLOCK_COMMAND_OFFSET 0
308#define CMD_BLOCK_STATUS_OFFSET 1
309#define CMD_BLOCK_PARAMETERS_OFFSET 4
310
311#define SCAN_OPTIONS_SITE_SURVEY 0x80
312
313#define MGMT_FRAME_BODY_OFFSET 24
314#define MAX_AUTHENTICATION_RETRIES 3
315#define MAX_ASSOCIATION_RETRIES 3
316
317#define AUTHENTICATION_RESPONSE_TIME_OUT 1000
318
319#define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
320#define LOOP_RETRY_LIMIT 500000
321
322#define ACTIVE_MODE 1
323#define PS_MODE 2
324
325#define MAX_ENCRYPTION_KEYS 4
326#define MAX_ENCRYPTION_KEY_SIZE 40
327
328/*
329 * 802.11 related definitions
330 */
331
332/*
333 * Regulatory Domains
334 */
335
336#define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */
337#define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */
338#define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */
339#define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */
340#define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */
341#define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */
342#define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */
343#define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */
344
345#define BSS_TYPE_AD_HOC 1
346#define BSS_TYPE_INFRASTRUCTURE 2
347
348#define SCAN_TYPE_ACTIVE 0
349#define SCAN_TYPE_PASSIVE 1
350
351#define LONG_PREAMBLE 0
352#define SHORT_PREAMBLE 1
353#define AUTO_PREAMBLE 2
354
355#define DATA_FRAME_WS_HEADER_SIZE 30
356
357/* promiscuous mode control */
358#define PROM_MODE_OFF 0x0
359#define PROM_MODE_UNKNOWN 0x1
360#define PROM_MODE_CRC_FAILED 0x2
361#define PROM_MODE_DUPLICATED 0x4
362#define PROM_MODE_MGMT 0x8
363#define PROM_MODE_CTRL 0x10
364#define PROM_MODE_BAD_PROTOCOL 0x20
365
366#define IFACE_INT_STATUS_OFFSET 0
367#define IFACE_INT_MASK_OFFSET 1
368#define IFACE_LOCKOUT_HOST_OFFSET 2
369#define IFACE_LOCKOUT_MAC_OFFSET 3
370#define IFACE_FUNC_CTRL_OFFSET 28
371#define IFACE_MAC_STAT_OFFSET 30
372#define IFACE_GENERIC_INT_TYPE_OFFSET 32
373
374#define CIPHER_SUITE_NONE 0
375#define CIPHER_SUITE_WEP_64 1
376#define CIPHER_SUITE_TKIP 2
377#define CIPHER_SUITE_AES 3
378#define CIPHER_SUITE_CCX 4
379#define CIPHER_SUITE_WEP_128 5
380
381/*
382 * IFACE MACROS & definitions
383 */
384
385/*
386 * FuncCtrl field:
387 */
388#define FUNC_CTRL_TxENABLE 0x10
389#define FUNC_CTRL_RxENABLE 0x20
390#define FUNC_CTRL_INIT_COMPLETE 0x01
391
392/* A stub firmware image which reads the MAC address from NVRAM on the card.
393 For copyright information and source see the end of this file. */
394static u8 mac_reader[] = {
395 0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
396 0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
397 0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
398 0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
399 0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
400 0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
401 0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
402 0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
403 0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
404 0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
405 0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
406 0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
407 0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
408 0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
409 0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
410 0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
411 0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
412 0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
413 0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
414 0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
415 0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
416 0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
417 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
418 0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
419 0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
420 0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
421 0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
422 0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
423 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
424 0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
425 0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
426 0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
427 0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
428 0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
429 0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
430 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
431 0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
432 0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
433 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
434 0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
435 0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
436 0x00, 0x01, 0x00, 0x02
437};
438
439struct atmel_private {
440 void *card; /* Bus dependent structure varies for PCcard */
441 int (*present_callback)(void *); /* And callback which uses it */
442 char firmware_id[32];
443 AtmelFWType firmware_type;
444 u8 *firmware;
445 int firmware_length;
446 struct timer_list management_timer;
447 struct net_device *dev;
448 struct device *sys_dev;
449 struct iw_statistics wstats;
450 spinlock_t irqlock, timerlock; /* spinlocks */
451 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
452 enum {
453 CARD_TYPE_PARALLEL_FLASH,
454 CARD_TYPE_SPI_FLASH,
455 CARD_TYPE_EEPROM
456 } card_type;
457 int do_rx_crc; /* If we need to CRC incoming packets */
458 int probe_crc; /* set if we don't yet know */
459 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
460 u16 rx_desc_head;
461 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
462 u16 tx_free_mem, tx_buff_head, tx_buff_tail;
463
464 u16 frag_seq, frag_len, frag_no;
465 u8 frag_source[6];
466
467 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
468 u8 group_cipher_suite, pairwise_cipher_suite;
469 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
470 int wep_key_len[MAX_ENCRYPTION_KEYS];
471 int use_wpa, radio_on_broken; /* firmware dependent stuff. */
472
473 u16 host_info_base;
474 struct host_info_struct {
475 /* NB this is matched to the hardware, don't change. */
476 u8 volatile int_status;
477 u8 volatile int_mask;
478 u8 volatile lockout_host;
479 u8 volatile lockout_mac;
480
481 u16 tx_buff_pos;
482 u16 tx_buff_size;
483 u16 tx_desc_pos;
484 u16 tx_desc_count;
485
486 u16 rx_buff_pos;
487 u16 rx_buff_size;
488 u16 rx_desc_pos;
489 u16 rx_desc_count;
490
491 u16 build_version;
492 u16 command_pos;
493
494 u16 major_version;
495 u16 minor_version;
496
497 u16 func_ctrl;
498 u16 mac_status;
499 u16 generic_IRQ_type;
500 u8 reserved[2];
501 } host_info;
502
503 enum {
504 STATION_STATE_SCANNING,
505 STATION_STATE_JOINNING,
506 STATION_STATE_AUTHENTICATING,
507 STATION_STATE_ASSOCIATING,
508 STATION_STATE_READY,
509 STATION_STATE_REASSOCIATING,
510 STATION_STATE_DOWN,
511 STATION_STATE_MGMT_ERROR
512 } station_state;
513
514 int operating_mode, power_mode;
515 unsigned long last_qual;
516 int beacons_this_sec;
517 int channel;
518 int reg_domain, config_reg_domain;
519 int tx_rate;
520 int auto_tx_rate;
521 int rts_threshold;
522 int frag_threshold;
523 int long_retry, short_retry;
524 int preamble;
525 int default_beacon_period, beacon_period, listen_interval;
526 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
527 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
528 enum {
529 SITE_SURVEY_IDLE,
530 SITE_SURVEY_IN_PROGRESS,
531 SITE_SURVEY_COMPLETED
532 } site_survey_state;
533 unsigned long last_survey;
534
535 int station_was_associated, station_is_associated;
536 int fast_scan;
537
538 struct bss_info {
539 int channel;
540 int SSIDsize;
541 int RSSI;
542 int UsingWEP;
543 int preamble;
544 int beacon_period;
545 int BSStype;
546 u8 BSSID[6];
547 u8 SSID[MAX_SSID_LENGTH];
548 } BSSinfo[MAX_BSS_ENTRIES];
549 int BSS_list_entries, current_BSS;
550 int connect_to_any_BSS;
551 int SSID_size, new_SSID_size;
552 u8 CurrentBSSID[6], BSSID[6];
553 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
554 u64 last_beacon_timestamp;
555 u8 rx_buf[MAX_WIRELESS_BODY];
556};
557
558static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
559
560static const struct {
561 int reg_domain;
562 int min, max;
563 char *name;
564} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
565 { REG_DOMAIN_DOC, 1, 11, "Canada" },
566 { REG_DOMAIN_ETSI, 1, 13, "Europe" },
567 { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
568 { REG_DOMAIN_FRANCE, 10, 13, "France" },
569 { REG_DOMAIN_MKK, 14, 14, "MKK" },
570 { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
571 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
572
573static void build_wpa_mib(struct atmel_private *priv);
574static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
575static void atmel_copy_to_card(struct net_device *dev, u16 dest,
576 const unsigned char *src, u16 len);
577static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
578 u16 src, u16 len);
579static void atmel_set_gcr(struct net_device *dev, u16 mask);
580static void atmel_clear_gcr(struct net_device *dev, u16 mask);
581static int atmel_lock_mac(struct atmel_private *priv);
582static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
583static void atmel_command_irq(struct atmel_private *priv);
584static int atmel_validate_channel(struct atmel_private *priv, int channel);
585static void atmel_management_frame(struct atmel_private *priv,
586 struct ieee80211_hdr *header,
587 u16 frame_len, u8 rssi);
588static void atmel_management_timer(struct timer_list *t);
589static void atmel_send_command(struct atmel_private *priv, int command,
590 void *cmd, int cmd_size);
591static int atmel_send_command_wait(struct atmel_private *priv, int command,
592 void *cmd, int cmd_size);
593static void atmel_transmit_management_frame(struct atmel_private *priv,
594 struct ieee80211_hdr *header,
595 u8 *body, int body_len);
596
597static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
598static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
599 u8 data);
600static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
601 u16 data);
602static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
603 u8 *data, int data_len);
604static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
605 u8 *data, int data_len);
606static void atmel_scan(struct atmel_private *priv, int specific_ssid);
607static void atmel_join_bss(struct atmel_private *priv, int bss_index);
608static void atmel_smooth_qual(struct atmel_private *priv);
609static void atmel_writeAR(struct net_device *dev, u16 data);
610static int probe_atmel_card(struct net_device *dev);
611static int reset_atmel_card(struct net_device *dev);
612static void atmel_enter_state(struct atmel_private *priv, int new_state);
613int atmel_open (struct net_device *dev);
614
615static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
616{
617 return priv->host_info_base + offset;
618}
619
620static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
621{
622 return priv->host_info.command_pos + offset;
623}
624
625static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
626{
627 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
628}
629
630static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
631{
632 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
633}
634
635static inline u8 atmel_read8(struct net_device *dev, u16 offset)
636{
637 return inb(dev->base_addr + offset);
638}
639
640static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
641{
642 outb(data, dev->base_addr + offset);
643}
644
645static inline u16 atmel_read16(struct net_device *dev, u16 offset)
646{
647 return inw(dev->base_addr + offset);
648}
649
650static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
651{
652 outw(data, dev->base_addr + offset);
653}
654
655static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
656{
657 atmel_writeAR(priv->dev, pos);
658 return atmel_read8(priv->dev, DR);
659}
660
661static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
662{
663 atmel_writeAR(priv->dev, pos);
664 atmel_write8(priv->dev, DR, data);
665}
666
667static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
668{
669 atmel_writeAR(priv->dev, pos);
670 return atmel_read16(priv->dev, DR);
671}
672
673static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
674{
675 atmel_writeAR(priv->dev, pos);
676 atmel_write16(priv->dev, DR, data);
677}
678
679static const struct iw_handler_def atmel_handler_def;
680
681static void tx_done_irq(struct atmel_private *priv)
682{
683 int i;
684
685 for (i = 0;
686 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
687 i < priv->host_info.tx_desc_count;
688 i++) {
689 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
690 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
691 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
692
693 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
694
695 priv->tx_free_mem += msdu_size;
696 priv->tx_desc_free++;
697
698 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
699 priv->tx_buff_head = 0;
700 else
701 priv->tx_buff_head += msdu_size;
702
703 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
704 priv->tx_desc_head++ ;
705 else
706 priv->tx_desc_head = 0;
707
708 if (type == TX_PACKET_TYPE_DATA) {
709 if (status == TX_STATUS_SUCCESS)
710 priv->dev->stats.tx_packets++;
711 else
712 priv->dev->stats.tx_errors++;
713 netif_wake_queue(priv->dev);
714 }
715 }
716}
717
718static u16 find_tx_buff(struct atmel_private *priv, u16 len)
719{
720 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
721
722 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
723 return 0;
724
725 if (bottom_free >= len)
726 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
727
728 if (priv->tx_free_mem - bottom_free >= len) {
729 priv->tx_buff_tail = 0;
730 return priv->host_info.tx_buff_pos;
731 }
732
733 return 0;
734}
735
736static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
737 u16 len, u16 buff, u8 type)
738{
739 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
740 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
741 if (!priv->use_wpa)
742 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
743 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
744 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
745 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
746 if (priv->use_wpa) {
747 int cipher_type, cipher_length;
748 if (is_bcast) {
749 cipher_type = priv->group_cipher_suite;
750 if (cipher_type == CIPHER_SUITE_WEP_64 ||
751 cipher_type == CIPHER_SUITE_WEP_128)
752 cipher_length = 8;
753 else if (cipher_type == CIPHER_SUITE_TKIP)
754 cipher_length = 12;
755 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
756 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
757 cipher_type = priv->pairwise_cipher_suite;
758 cipher_length = 8;
759 } else {
760 cipher_type = CIPHER_SUITE_NONE;
761 cipher_length = 0;
762 }
763 } else {
764 cipher_type = priv->pairwise_cipher_suite;
765 if (cipher_type == CIPHER_SUITE_WEP_64 ||
766 cipher_type == CIPHER_SUITE_WEP_128)
767 cipher_length = 8;
768 else if (cipher_type == CIPHER_SUITE_TKIP)
769 cipher_length = 12;
770 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
771 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
772 cipher_type = priv->group_cipher_suite;
773 cipher_length = 8;
774 } else {
775 cipher_type = CIPHER_SUITE_NONE;
776 cipher_length = 0;
777 }
778 }
779
780 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
781 cipher_type);
782 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
783 cipher_length);
784 }
785 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
786 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
787 if (priv->tx_desc_previous != priv->tx_desc_tail)
788 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
789 priv->tx_desc_previous = priv->tx_desc_tail;
790 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
791 priv->tx_desc_tail++;
792 else
793 priv->tx_desc_tail = 0;
794 priv->tx_desc_free--;
795 priv->tx_free_mem -= len;
796}
797
798static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
799{
800 struct atmel_private *priv = netdev_priv(dev);
801 struct ieee80211_hdr header;
802 unsigned long flags;
803 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
804
805 if (priv->card && priv->present_callback &&
806 !(*priv->present_callback)(priv->card)) {
807 dev->stats.tx_errors++;
808 dev_kfree_skb(skb);
809 return NETDEV_TX_OK;
810 }
811
812 if (priv->station_state != STATION_STATE_READY) {
813 dev->stats.tx_errors++;
814 dev_kfree_skb(skb);
815 return NETDEV_TX_OK;
816 }
817
818 /* first ensure the timer func cannot run */
819 spin_lock_bh(&priv->timerlock);
820 /* then stop the hardware ISR */
821 spin_lock_irqsave(&priv->irqlock, flags);
822 /* nb doing the above in the opposite order will deadlock */
823
824 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
825 12 first bytes (containing DA/SA) and put them in the appropriate
826 fields of the Wireless Header. Thus the packet length is then the
827 initial + 18 (+30-12) */
828
829 if (!(buff = find_tx_buff(priv, len + 18))) {
830 dev->stats.tx_dropped++;
831 spin_unlock_irqrestore(&priv->irqlock, flags);
832 spin_unlock_bh(&priv->timerlock);
833 netif_stop_queue(dev);
834 return NETDEV_TX_BUSY;
835 }
836
837 frame_ctl = IEEE80211_FTYPE_DATA;
838 header.duration_id = 0;
839 header.seq_ctrl = 0;
840 if (priv->wep_is_on)
841 frame_ctl |= IEEE80211_FCTL_PROTECTED;
842 if (priv->operating_mode == IW_MODE_ADHOC) {
843 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
844 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
845 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
846 } else {
847 frame_ctl |= IEEE80211_FCTL_TODS;
848 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
849 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
850 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
851 }
852
853 if (priv->use_wpa)
854 memcpy(&header.addr4, rfc1042_header, ETH_ALEN);
855
856 header.frame_control = cpu_to_le16(frame_ctl);
857 /* Copy the wireless header into the card */
858 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
859 /* Copy the packet sans its 802.3 header addresses which have been replaced */
860 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
861 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
862
863 /* low bit of first byte of destination tells us if broadcast */
864 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
865 dev->stats.tx_bytes += len;
866
867 spin_unlock_irqrestore(&priv->irqlock, flags);
868 spin_unlock_bh(&priv->timerlock);
869 dev_kfree_skb(skb);
870
871 return NETDEV_TX_OK;
872}
873
874static void atmel_transmit_management_frame(struct atmel_private *priv,
875 struct ieee80211_hdr *header,
876 u8 *body, int body_len)
877{
878 u16 buff;
879 int len = MGMT_FRAME_BODY_OFFSET + body_len;
880
881 if (!(buff = find_tx_buff(priv, len)))
882 return;
883
884 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
885 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
886 priv->tx_buff_tail += len;
887 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
888}
889
890static void fast_rx_path(struct atmel_private *priv,
891 struct ieee80211_hdr *header,
892 u16 msdu_size, u16 rx_packet_loc, u32 crc)
893{
894 /* fast path: unfragmented packet copy directly into skbuf */
895 u8 mac4[6];
896 struct sk_buff *skb;
897 unsigned char *skbp;
898
899 /* get the final, mac 4 header field, this tells us encapsulation */
900 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
901 msdu_size -= 6;
902
903 if (priv->do_rx_crc) {
904 crc = crc32_le(crc, mac4, 6);
905 msdu_size -= 4;
906 }
907
908 if (!(skb = dev_alloc_skb(msdu_size + 14))) {
909 priv->dev->stats.rx_dropped++;
910 return;
911 }
912
913 skb_reserve(skb, 2);
914 skbp = skb_put(skb, msdu_size + 12);
915 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
916
917 if (priv->do_rx_crc) {
918 u32 netcrc;
919 crc = crc32_le(crc, skbp + 12, msdu_size);
920 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
921 if ((crc ^ 0xffffffff) != netcrc) {
922 priv->dev->stats.rx_crc_errors++;
923 dev_kfree_skb(skb);
924 return;
925 }
926 }
927
928 memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
929 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
930 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
931 else
932 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
933
934 skb->protocol = eth_type_trans(skb, priv->dev);
935 skb->ip_summed = CHECKSUM_NONE;
936 netif_rx(skb);
937 priv->dev->stats.rx_bytes += 12 + msdu_size;
938 priv->dev->stats.rx_packets++;
939}
940
941/* Test to see if the packet in card memory at packet_loc has a valid CRC
942 It doesn't matter that this is slow: it is only used to proble the first few
943 packets. */
944static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
945{
946 int i = msdu_size - 4;
947 u32 netcrc, crc = 0xffffffff;
948
949 if (msdu_size < 4)
950 return 0;
951
952 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
953
954 atmel_writeAR(priv->dev, packet_loc);
955 while (i--) {
956 u8 octet = atmel_read8(priv->dev, DR);
957 crc = crc32_le(crc, &octet, 1);
958 }
959
960 return (crc ^ 0xffffffff) == netcrc;
961}
962
963static void frag_rx_path(struct atmel_private *priv,
964 struct ieee80211_hdr *header,
965 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
966 u8 frag_no, int more_frags)
967{
968 u8 mac4[ETH_ALEN];
969 u8 source[ETH_ALEN];
970 struct sk_buff *skb;
971
972 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
973 memcpy(source, header->addr3, ETH_ALEN);
974 else
975 memcpy(source, header->addr2, ETH_ALEN);
976
977 rx_packet_loc += 24; /* skip header */
978
979 if (priv->do_rx_crc)
980 msdu_size -= 4;
981
982 if (frag_no == 0) { /* first fragment */
983 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
984 msdu_size -= ETH_ALEN;
985 rx_packet_loc += ETH_ALEN;
986
987 if (priv->do_rx_crc)
988 crc = crc32_le(crc, mac4, 6);
989
990 priv->frag_seq = seq_no;
991 priv->frag_no = 1;
992 priv->frag_len = msdu_size;
993 memcpy(priv->frag_source, source, ETH_ALEN);
994 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
995 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
996
997 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
998
999 if (priv->do_rx_crc) {
1000 u32 netcrc;
1001 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1002 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1003 if ((crc ^ 0xffffffff) != netcrc) {
1004 priv->dev->stats.rx_crc_errors++;
1005 eth_broadcast_addr(priv->frag_source);
1006 }
1007 }
1008
1009 } else if (priv->frag_no == frag_no &&
1010 priv->frag_seq == seq_no &&
1011 memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
1012
1013 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1014 rx_packet_loc, msdu_size);
1015 if (priv->do_rx_crc) {
1016 u32 netcrc;
1017 crc = crc32_le(crc,
1018 &priv->rx_buf[12 + priv->frag_len],
1019 msdu_size);
1020 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1021 if ((crc ^ 0xffffffff) != netcrc) {
1022 priv->dev->stats.rx_crc_errors++;
1023 eth_broadcast_addr(priv->frag_source);
1024 more_frags = 1; /* don't send broken assembly */
1025 }
1026 }
1027
1028 priv->frag_len += msdu_size;
1029 priv->frag_no++;
1030
1031 if (!more_frags) { /* last one */
1032 eth_broadcast_addr(priv->frag_source);
1033 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1034 priv->dev->stats.rx_dropped++;
1035 } else {
1036 skb_reserve(skb, 2);
1037 skb_put_data(skb, priv->rx_buf,
1038 priv->frag_len + 12);
1039 skb->protocol = eth_type_trans(skb, priv->dev);
1040 skb->ip_summed = CHECKSUM_NONE;
1041 netif_rx(skb);
1042 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1043 priv->dev->stats.rx_packets++;
1044 }
1045 }
1046 } else
1047 priv->wstats.discard.fragment++;
1048}
1049
1050static void rx_done_irq(struct atmel_private *priv)
1051{
1052 int i;
1053 struct ieee80211_hdr header;
1054
1055 for (i = 0;
1056 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1057 i < priv->host_info.rx_desc_count;
1058 i++) {
1059
1060 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1061 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1062 u32 crc = 0xffffffff;
1063
1064 if (status != RX_STATUS_SUCCESS) {
1065 if (status == 0xc1) /* determined by experiment */
1066 priv->wstats.discard.nwid++;
1067 else
1068 priv->dev->stats.rx_errors++;
1069 goto next;
1070 }
1071
1072 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1073 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1074
1075 if (msdu_size < 30) {
1076 priv->dev->stats.rx_errors++;
1077 goto next;
1078 }
1079
1080 /* Get header as far as end of seq_ctrl */
1081 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1082 frame_ctl = le16_to_cpu(header.frame_control);
1083 seq_control = le16_to_cpu(header.seq_ctrl);
1084
1085 /* probe for CRC use here if needed once five packets have
1086 arrived with the same crc status, we assume we know what's
1087 happening and stop probing */
1088 if (priv->probe_crc) {
1089 if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1090 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1091 } else {
1092 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1093 }
1094 if (priv->do_rx_crc) {
1095 if (priv->crc_ok_cnt++ > 5)
1096 priv->probe_crc = 0;
1097 } else {
1098 if (priv->crc_ko_cnt++ > 5)
1099 priv->probe_crc = 0;
1100 }
1101 }
1102
1103 /* don't CRC header when WEP in use */
1104 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1105 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1106 }
1107 msdu_size -= 24; /* header */
1108
1109 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1110 int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1111 u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1112 u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1113
1114 if (!more_fragments && packet_fragment_no == 0) {
1115 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1116 } else {
1117 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1118 packet_sequence_no, packet_fragment_no, more_fragments);
1119 }
1120 }
1121
1122 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1123 /* copy rest of packet into buffer */
1124 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1125
1126 /* we use the same buffer for frag reassembly and control packets */
1127 eth_broadcast_addr(priv->frag_source);
1128
1129 if (priv->do_rx_crc) {
1130 /* last 4 octets is crc */
1131 msdu_size -= 4;
1132 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1133 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1134 priv->dev->stats.rx_crc_errors++;
1135 goto next;
1136 }
1137 }
1138
1139 atmel_management_frame(priv, &header, msdu_size,
1140 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1141 }
1142
1143next:
1144 /* release descriptor */
1145 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1146
1147 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1148 priv->rx_desc_head++;
1149 else
1150 priv->rx_desc_head = 0;
1151 }
1152}
1153
1154static irqreturn_t service_interrupt(int irq, void *dev_id)
1155{
1156 struct net_device *dev = (struct net_device *) dev_id;
1157 struct atmel_private *priv = netdev_priv(dev);
1158 u8 isr;
1159 int i = -1;
1160 static const u8 irq_order[] = {
1161 ISR_OUT_OF_RANGE,
1162 ISR_RxCOMPLETE,
1163 ISR_TxCOMPLETE,
1164 ISR_RxFRAMELOST,
1165 ISR_FATAL_ERROR,
1166 ISR_COMMAND_COMPLETE,
1167 ISR_IBSS_MERGE,
1168 ISR_GENERIC_IRQ
1169 };
1170
1171 if (priv->card && priv->present_callback &&
1172 !(*priv->present_callback)(priv->card))
1173 return IRQ_HANDLED;
1174
1175 /* In this state upper-level code assumes it can mess with
1176 the card unhampered by interrupts which may change register state.
1177 Note that even though the card shouldn't generate interrupts
1178 the inturrupt line may be shared. This allows card setup
1179 to go on without disabling interrupts for a long time. */
1180 if (priv->station_state == STATION_STATE_DOWN)
1181 return IRQ_NONE;
1182
1183 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1184
1185 while (1) {
1186 if (!atmel_lock_mac(priv)) {
1187 /* failed to contact card */
1188 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1189 return IRQ_HANDLED;
1190 }
1191
1192 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1193 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1194
1195 if (!isr) {
1196 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1197 return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1198 }
1199
1200 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1201
1202 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1203 if (isr & irq_order[i])
1204 break;
1205
1206 if (!atmel_lock_mac(priv)) {
1207 /* failed to contact card */
1208 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1209 return IRQ_HANDLED;
1210 }
1211
1212 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1213 isr ^= irq_order[i];
1214 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1215 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1216
1217 switch (irq_order[i]) {
1218
1219 case ISR_OUT_OF_RANGE:
1220 if (priv->operating_mode == IW_MODE_INFRA &&
1221 priv->station_state == STATION_STATE_READY) {
1222 priv->station_is_associated = 0;
1223 atmel_scan(priv, 1);
1224 }
1225 break;
1226
1227 case ISR_RxFRAMELOST:
1228 priv->wstats.discard.misc++;
1229 fallthrough;
1230 case ISR_RxCOMPLETE:
1231 rx_done_irq(priv);
1232 break;
1233
1234 case ISR_TxCOMPLETE:
1235 tx_done_irq(priv);
1236 break;
1237
1238 case ISR_FATAL_ERROR:
1239 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1240 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1241 break;
1242
1243 case ISR_COMMAND_COMPLETE:
1244 atmel_command_irq(priv);
1245 break;
1246
1247 case ISR_IBSS_MERGE:
1248 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1249 priv->CurrentBSSID, 6);
1250 /* The WPA stuff cares about the current AP address */
1251 if (priv->use_wpa)
1252 build_wpa_mib(priv);
1253 break;
1254 case ISR_GENERIC_IRQ:
1255 printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1256 break;
1257 }
1258 }
1259}
1260
1261static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1262{
1263 struct atmel_private *priv = netdev_priv(dev);
1264
1265 /* update the link quality here in case we are seeing no beacons
1266 at all to drive the process */
1267 atmel_smooth_qual(priv);
1268
1269 priv->wstats.status = priv->station_state;
1270
1271 if (priv->operating_mode == IW_MODE_INFRA) {
1272 if (priv->station_state != STATION_STATE_READY) {
1273 priv->wstats.qual.qual = 0;
1274 priv->wstats.qual.level = 0;
1275 priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1276 | IW_QUAL_LEVEL_INVALID);
1277 }
1278 priv->wstats.qual.noise = 0;
1279 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1280 } else {
1281 /* Quality levels cannot be determined in ad-hoc mode,
1282 because we can 'hear' more that one remote station. */
1283 priv->wstats.qual.qual = 0;
1284 priv->wstats.qual.level = 0;
1285 priv->wstats.qual.noise = 0;
1286 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1287 | IW_QUAL_LEVEL_INVALID
1288 | IW_QUAL_NOISE_INVALID;
1289 priv->wstats.miss.beacon = 0;
1290 }
1291
1292 return &priv->wstats;
1293}
1294
1295static int atmel_set_mac_address(struct net_device *dev, void *p)
1296{
1297 struct sockaddr *addr = p;
1298
1299 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1300 return atmel_open(dev);
1301}
1302
1303EXPORT_SYMBOL(atmel_open);
1304
1305int atmel_open(struct net_device *dev)
1306{
1307 struct atmel_private *priv = netdev_priv(dev);
1308 int i, channel, err;
1309
1310 /* any scheduled timer is no longer needed and might screw things up.. */
1311 del_timer_sync(&priv->management_timer);
1312
1313 /* Interrupts will not touch the card once in this state... */
1314 priv->station_state = STATION_STATE_DOWN;
1315
1316 if (priv->new_SSID_size) {
1317 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1318 priv->SSID_size = priv->new_SSID_size;
1319 priv->new_SSID_size = 0;
1320 }
1321 priv->BSS_list_entries = 0;
1322
1323 priv->AuthenticationRequestRetryCnt = 0;
1324 priv->AssociationRequestRetryCnt = 0;
1325 priv->ReAssociationRequestRetryCnt = 0;
1326 priv->CurrentAuthentTransactionSeqNum = 0x0001;
1327 priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1328
1329 priv->site_survey_state = SITE_SURVEY_IDLE;
1330 priv->station_is_associated = 0;
1331
1332 err = reset_atmel_card(dev);
1333 if (err)
1334 return err;
1335
1336 if (priv->config_reg_domain) {
1337 priv->reg_domain = priv->config_reg_domain;
1338 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1339 } else {
1340 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1341 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1342 if (priv->reg_domain == channel_table[i].reg_domain)
1343 break;
1344 if (i == ARRAY_SIZE(channel_table)) {
1345 priv->reg_domain = REG_DOMAIN_MKK1;
1346 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1347 }
1348 }
1349
1350 if ((channel = atmel_validate_channel(priv, priv->channel)))
1351 priv->channel = channel;
1352
1353 /* this moves station_state on.... */
1354 atmel_scan(priv, 1);
1355
1356 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1357 return 0;
1358}
1359
1360static int atmel_close(struct net_device *dev)
1361{
1362 struct atmel_private *priv = netdev_priv(dev);
1363
1364 /* Send event to userspace that we are disassociating */
1365 if (priv->station_state == STATION_STATE_READY) {
1366 union iwreq_data wrqu;
1367
1368 wrqu.data.length = 0;
1369 wrqu.data.flags = 0;
1370 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1371 eth_zero_addr(wrqu.ap_addr.sa_data);
1372 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1373 }
1374
1375 atmel_enter_state(priv, STATION_STATE_DOWN);
1376
1377 if (priv->bus_type == BUS_TYPE_PCCARD)
1378 atmel_write16(dev, GCR, 0x0060);
1379 atmel_write16(dev, GCR, 0x0040);
1380 return 0;
1381}
1382
1383static int atmel_validate_channel(struct atmel_private *priv, int channel)
1384{
1385 /* check that channel is OK, if so return zero,
1386 else return suitable default channel */
1387 int i;
1388
1389 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1390 if (priv->reg_domain == channel_table[i].reg_domain) {
1391 if (channel >= channel_table[i].min &&
1392 channel <= channel_table[i].max)
1393 return 0;
1394 else
1395 return channel_table[i].min;
1396 }
1397 return 0;
1398}
1399
1400#ifdef CONFIG_PROC_FS
1401static int atmel_proc_show(struct seq_file *m, void *v)
1402{
1403 struct atmel_private *priv = m->private;
1404 int i;
1405 char *s, *r, *c;
1406
1407 seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1408
1409 if (priv->station_state != STATION_STATE_DOWN) {
1410 seq_printf(m,
1411 "Firmware version:\t%d.%d build %d\n"
1412 "Firmware location:\t",
1413 priv->host_info.major_version,
1414 priv->host_info.minor_version,
1415 priv->host_info.build_version);
1416
1417 if (priv->card_type != CARD_TYPE_EEPROM)
1418 seq_puts(m, "on card\n");
1419 else if (priv->firmware)
1420 seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1421 else
1422 seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1423
1424 switch (priv->card_type) {
1425 case CARD_TYPE_PARALLEL_FLASH:
1426 c = "Parallel flash";
1427 break;
1428 case CARD_TYPE_SPI_FLASH:
1429 c = "SPI flash\n";
1430 break;
1431 case CARD_TYPE_EEPROM:
1432 c = "EEPROM";
1433 break;
1434 default:
1435 c = "<unknown>";
1436 }
1437
1438 r = "<unknown>";
1439 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1440 if (priv->reg_domain == channel_table[i].reg_domain)
1441 r = channel_table[i].name;
1442
1443 seq_printf(m, "MAC memory type:\t%s\n", c);
1444 seq_printf(m, "Regulatory domain:\t%s\n", r);
1445 seq_printf(m, "Host CRC checking:\t%s\n",
1446 priv->do_rx_crc ? "On" : "Off");
1447 seq_printf(m, "WPA-capable firmware:\t%s\n",
1448 priv->use_wpa ? "Yes" : "No");
1449 }
1450
1451 switch (priv->station_state) {
1452 case STATION_STATE_SCANNING:
1453 s = "Scanning";
1454 break;
1455 case STATION_STATE_JOINNING:
1456 s = "Joining";
1457 break;
1458 case STATION_STATE_AUTHENTICATING:
1459 s = "Authenticating";
1460 break;
1461 case STATION_STATE_ASSOCIATING:
1462 s = "Associating";
1463 break;
1464 case STATION_STATE_READY:
1465 s = "Ready";
1466 break;
1467 case STATION_STATE_REASSOCIATING:
1468 s = "Reassociating";
1469 break;
1470 case STATION_STATE_MGMT_ERROR:
1471 s = "Management error";
1472 break;
1473 case STATION_STATE_DOWN:
1474 s = "Down";
1475 break;
1476 default:
1477 s = "<unknown>";
1478 }
1479
1480 seq_printf(m, "Current state:\t\t%s\n", s);
1481 return 0;
1482}
1483#endif
1484
1485static const struct net_device_ops atmel_netdev_ops = {
1486 .ndo_open = atmel_open,
1487 .ndo_stop = atmel_close,
1488 .ndo_set_mac_address = atmel_set_mac_address,
1489 .ndo_start_xmit = start_tx,
1490 .ndo_do_ioctl = atmel_ioctl,
1491 .ndo_validate_addr = eth_validate_addr,
1492};
1493
1494struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1495 const AtmelFWType fw_type,
1496 struct device *sys_dev,
1497 int (*card_present)(void *), void *card)
1498{
1499 struct net_device *dev;
1500 struct atmel_private *priv;
1501 int rc;
1502
1503 /* Create the network device object. */
1504 dev = alloc_etherdev(sizeof(*priv));
1505 if (!dev)
1506 return NULL;
1507
1508 if (dev_alloc_name(dev, dev->name) < 0) {
1509 printk(KERN_ERR "atmel: Couldn't get name!\n");
1510 goto err_out_free;
1511 }
1512
1513 priv = netdev_priv(dev);
1514 priv->dev = dev;
1515 priv->sys_dev = sys_dev;
1516 priv->present_callback = card_present;
1517 priv->card = card;
1518 priv->firmware = NULL;
1519 priv->firmware_type = fw_type;
1520 if (firmware) /* module parameter */
1521 strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id));
1522 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1523 priv->station_state = STATION_STATE_DOWN;
1524 priv->do_rx_crc = 0;
1525 /* For PCMCIA cards, some chips need CRC, some don't
1526 so we have to probe. */
1527 if (priv->bus_type == BUS_TYPE_PCCARD) {
1528 priv->probe_crc = 1;
1529 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1530 } else
1531 priv->probe_crc = 0;
1532 priv->last_qual = jiffies;
1533 priv->last_beacon_timestamp = 0;
1534 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1535 eth_zero_addr(priv->BSSID);
1536 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1537 priv->station_was_associated = 0;
1538
1539 priv->last_survey = jiffies;
1540 priv->preamble = LONG_PREAMBLE;
1541 priv->operating_mode = IW_MODE_INFRA;
1542 priv->connect_to_any_BSS = 0;
1543 priv->config_reg_domain = 0;
1544 priv->reg_domain = 0;
1545 priv->tx_rate = 3;
1546 priv->auto_tx_rate = 1;
1547 priv->channel = 4;
1548 priv->power_mode = 0;
1549 priv->SSID[0] = '\0';
1550 priv->SSID_size = 0;
1551 priv->new_SSID_size = 0;
1552 priv->frag_threshold = 2346;
1553 priv->rts_threshold = 2347;
1554 priv->short_retry = 7;
1555 priv->long_retry = 4;
1556
1557 priv->wep_is_on = 0;
1558 priv->default_key = 0;
1559 priv->encryption_level = 0;
1560 priv->exclude_unencrypted = 0;
1561 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1562 priv->use_wpa = 0;
1563 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1564 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1565
1566 priv->default_beacon_period = priv->beacon_period = 100;
1567 priv->listen_interval = 1;
1568
1569 timer_setup(&priv->management_timer, atmel_management_timer, 0);
1570 spin_lock_init(&priv->irqlock);
1571 spin_lock_init(&priv->timerlock);
1572
1573 dev->netdev_ops = &atmel_netdev_ops;
1574 dev->wireless_handlers = &atmel_handler_def;
1575 dev->irq = irq;
1576 dev->base_addr = port;
1577
1578 /* MTU range: 68 - 2312 */
1579 dev->min_mtu = 68;
1580 dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1581
1582 SET_NETDEV_DEV(dev, sys_dev);
1583
1584 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1585 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1586 goto err_out_free;
1587 }
1588
1589 if (!request_region(dev->base_addr, 32,
1590 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
1591 goto err_out_irq;
1592 }
1593
1594 if (register_netdev(dev))
1595 goto err_out_res;
1596
1597 if (!probe_atmel_card(dev)) {
1598 unregister_netdev(dev);
1599 goto err_out_res;
1600 }
1601
1602 netif_carrier_off(dev);
1603
1604 if (!proc_create_single_data("driver/atmel", 0, NULL, atmel_proc_show,
1605 priv))
1606 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1607
1608 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1609 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1610
1611 return dev;
1612
1613err_out_res:
1614 release_region(dev->base_addr, 32);
1615err_out_irq:
1616 free_irq(dev->irq, dev);
1617err_out_free:
1618 free_netdev(dev);
1619 return NULL;
1620}
1621
1622EXPORT_SYMBOL(init_atmel_card);
1623
1624void stop_atmel_card(struct net_device *dev)
1625{
1626 struct atmel_private *priv = netdev_priv(dev);
1627
1628 /* put a brick on it... */
1629 if (priv->bus_type == BUS_TYPE_PCCARD)
1630 atmel_write16(dev, GCR, 0x0060);
1631 atmel_write16(dev, GCR, 0x0040);
1632
1633 del_timer_sync(&priv->management_timer);
1634 unregister_netdev(dev);
1635 remove_proc_entry("driver/atmel", NULL);
1636 free_irq(dev->irq, dev);
1637 kfree(priv->firmware);
1638 release_region(dev->base_addr, 32);
1639 free_netdev(dev);
1640}
1641
1642EXPORT_SYMBOL(stop_atmel_card);
1643
1644static int atmel_set_essid(struct net_device *dev,
1645 struct iw_request_info *info,
1646 struct iw_point *dwrq,
1647 char *extra)
1648{
1649 struct atmel_private *priv = netdev_priv(dev);
1650
1651 /* Check if we asked for `any' */
1652 if (dwrq->flags == 0) {
1653 priv->connect_to_any_BSS = 1;
1654 } else {
1655 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1656
1657 priv->connect_to_any_BSS = 0;
1658
1659 /* Check the size of the string */
1660 if (dwrq->length > MAX_SSID_LENGTH)
1661 return -E2BIG;
1662 if (index != 0)
1663 return -EINVAL;
1664
1665 memcpy(priv->new_SSID, extra, dwrq->length);
1666 priv->new_SSID_size = dwrq->length;
1667 }
1668
1669 return -EINPROGRESS;
1670}
1671
1672static int atmel_get_essid(struct net_device *dev,
1673 struct iw_request_info *info,
1674 struct iw_point *dwrq,
1675 char *extra)
1676{
1677 struct atmel_private *priv = netdev_priv(dev);
1678
1679 /* Get the current SSID */
1680 if (priv->new_SSID_size != 0) {
1681 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1682 dwrq->length = priv->new_SSID_size;
1683 } else {
1684 memcpy(extra, priv->SSID, priv->SSID_size);
1685 dwrq->length = priv->SSID_size;
1686 }
1687
1688 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1689
1690 return 0;
1691}
1692
1693static int atmel_get_wap(struct net_device *dev,
1694 struct iw_request_info *info,
1695 struct sockaddr *awrq,
1696 char *extra)
1697{
1698 struct atmel_private *priv = netdev_priv(dev);
1699 memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1700 awrq->sa_family = ARPHRD_ETHER;
1701
1702 return 0;
1703}
1704
1705static int atmel_set_encode(struct net_device *dev,
1706 struct iw_request_info *info,
1707 struct iw_point *dwrq,
1708 char *extra)
1709{
1710 struct atmel_private *priv = netdev_priv(dev);
1711
1712 /* Basic checking: do we have a key to set ?
1713 * Note : with the new API, it's impossible to get a NULL pointer.
1714 * Therefore, we need to check a key size == 0 instead.
1715 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1716 * when no key is present (only change flags), but older versions
1717 * don't do it. - Jean II */
1718 if (dwrq->length > 0) {
1719 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1720 int current_index = priv->default_key;
1721 /* Check the size of the key */
1722 if (dwrq->length > 13) {
1723 return -EINVAL;
1724 }
1725 /* Check the index (none -> use current) */
1726 if (index < 0 || index >= 4)
1727 index = current_index;
1728 else
1729 priv->default_key = index;
1730 /* Set the length */
1731 if (dwrq->length > 5)
1732 priv->wep_key_len[index] = 13;
1733 else
1734 if (dwrq->length > 0)
1735 priv->wep_key_len[index] = 5;
1736 else
1737 /* Disable the key */
1738 priv->wep_key_len[index] = 0;
1739 /* Check if the key is not marked as invalid */
1740 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1741 /* Cleanup */
1742 memset(priv->wep_keys[index], 0, 13);
1743 /* Copy the key in the driver */
1744 memcpy(priv->wep_keys[index], extra, dwrq->length);
1745 }
1746 /* WE specify that if a valid key is set, encryption
1747 * should be enabled (user may turn it off later)
1748 * This is also how "iwconfig ethX key on" works */
1749 if (index == current_index &&
1750 priv->wep_key_len[index] > 0) {
1751 priv->wep_is_on = 1;
1752 priv->exclude_unencrypted = 1;
1753 if (priv->wep_key_len[index] > 5) {
1754 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1755 priv->encryption_level = 2;
1756 } else {
1757 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1758 priv->encryption_level = 1;
1759 }
1760 }
1761 } else {
1762 /* Do we want to just set the transmit key index ? */
1763 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1764 if (index >= 0 && index < 4) {
1765 priv->default_key = index;
1766 } else
1767 /* Don't complain if only change the mode */
1768 if (!(dwrq->flags & IW_ENCODE_MODE))
1769 return -EINVAL;
1770 }
1771 /* Read the flags */
1772 if (dwrq->flags & IW_ENCODE_DISABLED) {
1773 priv->wep_is_on = 0;
1774 priv->encryption_level = 0;
1775 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1776 } else {
1777 priv->wep_is_on = 1;
1778 if (priv->wep_key_len[priv->default_key] > 5) {
1779 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1780 priv->encryption_level = 2;
1781 } else {
1782 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1783 priv->encryption_level = 1;
1784 }
1785 }
1786 if (dwrq->flags & IW_ENCODE_RESTRICTED)
1787 priv->exclude_unencrypted = 1;
1788 if (dwrq->flags & IW_ENCODE_OPEN)
1789 priv->exclude_unencrypted = 0;
1790
1791 return -EINPROGRESS; /* Call commit handler */
1792}
1793
1794static int atmel_get_encode(struct net_device *dev,
1795 struct iw_request_info *info,
1796 struct iw_point *dwrq,
1797 char *extra)
1798{
1799 struct atmel_private *priv = netdev_priv(dev);
1800 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1801
1802 if (!priv->wep_is_on)
1803 dwrq->flags = IW_ENCODE_DISABLED;
1804 else {
1805 if (priv->exclude_unencrypted)
1806 dwrq->flags = IW_ENCODE_RESTRICTED;
1807 else
1808 dwrq->flags = IW_ENCODE_OPEN;
1809 }
1810 /* Which key do we want ? -1 -> tx index */
1811 if (index < 0 || index >= 4)
1812 index = priv->default_key;
1813 dwrq->flags |= index + 1;
1814 /* Copy the key to the user buffer */
1815 dwrq->length = priv->wep_key_len[index];
1816 if (dwrq->length > 16) {
1817 dwrq->length = 0;
1818 } else {
1819 memset(extra, 0, 16);
1820 memcpy(extra, priv->wep_keys[index], dwrq->length);
1821 }
1822
1823 return 0;
1824}
1825
1826static int atmel_set_encodeext(struct net_device *dev,
1827 struct iw_request_info *info,
1828 union iwreq_data *wrqu,
1829 char *extra)
1830{
1831 struct atmel_private *priv = netdev_priv(dev);
1832 struct iw_point *encoding = &wrqu->encoding;
1833 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1834 int idx, key_len, alg = ext->alg, set_key = 1;
1835
1836 /* Determine and validate the key index */
1837 idx = encoding->flags & IW_ENCODE_INDEX;
1838 if (idx) {
1839 if (idx < 1 || idx > 4)
1840 return -EINVAL;
1841 idx--;
1842 } else
1843 idx = priv->default_key;
1844
1845 if (encoding->flags & IW_ENCODE_DISABLED)
1846 alg = IW_ENCODE_ALG_NONE;
1847
1848 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1849 priv->default_key = idx;
1850 set_key = ext->key_len > 0 ? 1 : 0;
1851 }
1852
1853 if (set_key) {
1854 /* Set the requested key first */
1855 switch (alg) {
1856 case IW_ENCODE_ALG_NONE:
1857 priv->wep_is_on = 0;
1858 priv->encryption_level = 0;
1859 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1860 break;
1861 case IW_ENCODE_ALG_WEP:
1862 if (ext->key_len > 5) {
1863 priv->wep_key_len[idx] = 13;
1864 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1865 priv->encryption_level = 2;
1866 } else if (ext->key_len > 0) {
1867 priv->wep_key_len[idx] = 5;
1868 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1869 priv->encryption_level = 1;
1870 } else {
1871 return -EINVAL;
1872 }
1873 priv->wep_is_on = 1;
1874 memset(priv->wep_keys[idx], 0, 13);
1875 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1876 memcpy(priv->wep_keys[idx], ext->key, key_len);
1877 break;
1878 default:
1879 return -EINVAL;
1880 }
1881 }
1882
1883 return -EINPROGRESS;
1884}
1885
1886static int atmel_get_encodeext(struct net_device *dev,
1887 struct iw_request_info *info,
1888 union iwreq_data *wrqu,
1889 char *extra)
1890{
1891 struct atmel_private *priv = netdev_priv(dev);
1892 struct iw_point *encoding = &wrqu->encoding;
1893 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1894 int idx, max_key_len;
1895
1896 max_key_len = encoding->length - sizeof(*ext);
1897 if (max_key_len < 0)
1898 return -EINVAL;
1899
1900 idx = encoding->flags & IW_ENCODE_INDEX;
1901 if (idx) {
1902 if (idx < 1 || idx > 4)
1903 return -EINVAL;
1904 idx--;
1905 } else
1906 idx = priv->default_key;
1907
1908 encoding->flags = idx + 1;
1909 memset(ext, 0, sizeof(*ext));
1910
1911 if (!priv->wep_is_on) {
1912 ext->alg = IW_ENCODE_ALG_NONE;
1913 ext->key_len = 0;
1914 encoding->flags |= IW_ENCODE_DISABLED;
1915 } else {
1916 if (priv->encryption_level > 0)
1917 ext->alg = IW_ENCODE_ALG_WEP;
1918 else
1919 return -EINVAL;
1920
1921 ext->key_len = priv->wep_key_len[idx];
1922 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1923 encoding->flags |= IW_ENCODE_ENABLED;
1924 }
1925
1926 return 0;
1927}
1928
1929static int atmel_set_auth(struct net_device *dev,
1930 struct iw_request_info *info,
1931 union iwreq_data *wrqu, char *extra)
1932{
1933 struct atmel_private *priv = netdev_priv(dev);
1934 struct iw_param *param = &wrqu->param;
1935
1936 switch (param->flags & IW_AUTH_INDEX) {
1937 case IW_AUTH_WPA_VERSION:
1938 case IW_AUTH_CIPHER_PAIRWISE:
1939 case IW_AUTH_CIPHER_GROUP:
1940 case IW_AUTH_KEY_MGMT:
1941 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1942 case IW_AUTH_PRIVACY_INVOKED:
1943 /*
1944 * atmel does not use these parameters
1945 */
1946 break;
1947
1948 case IW_AUTH_DROP_UNENCRYPTED:
1949 priv->exclude_unencrypted = param->value ? 1 : 0;
1950 break;
1951
1952 case IW_AUTH_80211_AUTH_ALG: {
1953 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1954 priv->exclude_unencrypted = 1;
1955 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1956 priv->exclude_unencrypted = 0;
1957 } else
1958 return -EINVAL;
1959 break;
1960 }
1961
1962 case IW_AUTH_WPA_ENABLED:
1963 /* Silently accept disable of WPA */
1964 if (param->value > 0)
1965 return -EOPNOTSUPP;
1966 break;
1967
1968 default:
1969 return -EOPNOTSUPP;
1970 }
1971 return -EINPROGRESS;
1972}
1973
1974static int atmel_get_auth(struct net_device *dev,
1975 struct iw_request_info *info,
1976 union iwreq_data *wrqu, char *extra)
1977{
1978 struct atmel_private *priv = netdev_priv(dev);
1979 struct iw_param *param = &wrqu->param;
1980
1981 switch (param->flags & IW_AUTH_INDEX) {
1982 case IW_AUTH_DROP_UNENCRYPTED:
1983 param->value = priv->exclude_unencrypted;
1984 break;
1985
1986 case IW_AUTH_80211_AUTH_ALG:
1987 if (priv->exclude_unencrypted == 1)
1988 param->value = IW_AUTH_ALG_SHARED_KEY;
1989 else
1990 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
1991 break;
1992
1993 case IW_AUTH_WPA_ENABLED:
1994 param->value = 0;
1995 break;
1996
1997 default:
1998 return -EOPNOTSUPP;
1999 }
2000 return 0;
2001}
2002
2003
2004static int atmel_get_name(struct net_device *dev,
2005 struct iw_request_info *info,
2006 char *cwrq,
2007 char *extra)
2008{
2009 strcpy(cwrq, "IEEE 802.11-DS");
2010 return 0;
2011}
2012
2013static int atmel_set_rate(struct net_device *dev,
2014 struct iw_request_info *info,
2015 struct iw_param *vwrq,
2016 char *extra)
2017{
2018 struct atmel_private *priv = netdev_priv(dev);
2019
2020 if (vwrq->fixed == 0) {
2021 priv->tx_rate = 3;
2022 priv->auto_tx_rate = 1;
2023 } else {
2024 priv->auto_tx_rate = 0;
2025
2026 /* Which type of value ? */
2027 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2028 /* Setting by rate index */
2029 priv->tx_rate = vwrq->value;
2030 } else {
2031 /* Setting by frequency value */
2032 switch (vwrq->value) {
2033 case 1000000:
2034 priv->tx_rate = 0;
2035 break;
2036 case 2000000:
2037 priv->tx_rate = 1;
2038 break;
2039 case 5500000:
2040 priv->tx_rate = 2;
2041 break;
2042 case 11000000:
2043 priv->tx_rate = 3;
2044 break;
2045 default:
2046 return -EINVAL;
2047 }
2048 }
2049 }
2050
2051 return -EINPROGRESS;
2052}
2053
2054static int atmel_set_mode(struct net_device *dev,
2055 struct iw_request_info *info,
2056 __u32 *uwrq,
2057 char *extra)
2058{
2059 struct atmel_private *priv = netdev_priv(dev);
2060
2061 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2062 return -EINVAL;
2063
2064 priv->operating_mode = *uwrq;
2065 return -EINPROGRESS;
2066}
2067
2068static int atmel_get_mode(struct net_device *dev,
2069 struct iw_request_info *info,
2070 __u32 *uwrq,
2071 char *extra)
2072{
2073 struct atmel_private *priv = netdev_priv(dev);
2074
2075 *uwrq = priv->operating_mode;
2076 return 0;
2077}
2078
2079static int atmel_get_rate(struct net_device *dev,
2080 struct iw_request_info *info,
2081 struct iw_param *vwrq,
2082 char *extra)
2083{
2084 struct atmel_private *priv = netdev_priv(dev);
2085
2086 if (priv->auto_tx_rate) {
2087 vwrq->fixed = 0;
2088 vwrq->value = 11000000;
2089 } else {
2090 vwrq->fixed = 1;
2091 switch (priv->tx_rate) {
2092 case 0:
2093 vwrq->value = 1000000;
2094 break;
2095 case 1:
2096 vwrq->value = 2000000;
2097 break;
2098 case 2:
2099 vwrq->value = 5500000;
2100 break;
2101 case 3:
2102 vwrq->value = 11000000;
2103 break;
2104 }
2105 }
2106 return 0;
2107}
2108
2109static int atmel_set_power(struct net_device *dev,
2110 struct iw_request_info *info,
2111 struct iw_param *vwrq,
2112 char *extra)
2113{
2114 struct atmel_private *priv = netdev_priv(dev);
2115 priv->power_mode = vwrq->disabled ? 0 : 1;
2116 return -EINPROGRESS;
2117}
2118
2119static int atmel_get_power(struct net_device *dev,
2120 struct iw_request_info *info,
2121 struct iw_param *vwrq,
2122 char *extra)
2123{
2124 struct atmel_private *priv = netdev_priv(dev);
2125 vwrq->disabled = priv->power_mode ? 0 : 1;
2126 vwrq->flags = IW_POWER_ON;
2127 return 0;
2128}
2129
2130static int atmel_set_retry(struct net_device *dev,
2131 struct iw_request_info *info,
2132 struct iw_param *vwrq,
2133 char *extra)
2134{
2135 struct atmel_private *priv = netdev_priv(dev);
2136
2137 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2138 if (vwrq->flags & IW_RETRY_LONG)
2139 priv->long_retry = vwrq->value;
2140 else if (vwrq->flags & IW_RETRY_SHORT)
2141 priv->short_retry = vwrq->value;
2142 else {
2143 /* No modifier : set both */
2144 priv->long_retry = vwrq->value;
2145 priv->short_retry = vwrq->value;
2146 }
2147 return -EINPROGRESS;
2148 }
2149
2150 return -EINVAL;
2151}
2152
2153static int atmel_get_retry(struct net_device *dev,
2154 struct iw_request_info *info,
2155 struct iw_param *vwrq,
2156 char *extra)
2157{
2158 struct atmel_private *priv = netdev_priv(dev);
2159
2160 vwrq->disabled = 0; /* Can't be disabled */
2161
2162 /* Note : by default, display the short retry number */
2163 if (vwrq->flags & IW_RETRY_LONG) {
2164 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2165 vwrq->value = priv->long_retry;
2166 } else {
2167 vwrq->flags = IW_RETRY_LIMIT;
2168 vwrq->value = priv->short_retry;
2169 if (priv->long_retry != priv->short_retry)
2170 vwrq->flags |= IW_RETRY_SHORT;
2171 }
2172
2173 return 0;
2174}
2175
2176static int atmel_set_rts(struct net_device *dev,
2177 struct iw_request_info *info,
2178 struct iw_param *vwrq,
2179 char *extra)
2180{
2181 struct atmel_private *priv = netdev_priv(dev);
2182 int rthr = vwrq->value;
2183
2184 if (vwrq->disabled)
2185 rthr = 2347;
2186 if ((rthr < 0) || (rthr > 2347)) {
2187 return -EINVAL;
2188 }
2189 priv->rts_threshold = rthr;
2190
2191 return -EINPROGRESS; /* Call commit handler */
2192}
2193
2194static int atmel_get_rts(struct net_device *dev,
2195 struct iw_request_info *info,
2196 struct iw_param *vwrq,
2197 char *extra)
2198{
2199 struct atmel_private *priv = netdev_priv(dev);
2200
2201 vwrq->value = priv->rts_threshold;
2202 vwrq->disabled = (vwrq->value >= 2347);
2203 vwrq->fixed = 1;
2204
2205 return 0;
2206}
2207
2208static int atmel_set_frag(struct net_device *dev,
2209 struct iw_request_info *info,
2210 struct iw_param *vwrq,
2211 char *extra)
2212{
2213 struct atmel_private *priv = netdev_priv(dev);
2214 int fthr = vwrq->value;
2215
2216 if (vwrq->disabled)
2217 fthr = 2346;
2218 if ((fthr < 256) || (fthr > 2346)) {
2219 return -EINVAL;
2220 }
2221 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2222 priv->frag_threshold = fthr;
2223
2224 return -EINPROGRESS; /* Call commit handler */
2225}
2226
2227static int atmel_get_frag(struct net_device *dev,
2228 struct iw_request_info *info,
2229 struct iw_param *vwrq,
2230 char *extra)
2231{
2232 struct atmel_private *priv = netdev_priv(dev);
2233
2234 vwrq->value = priv->frag_threshold;
2235 vwrq->disabled = (vwrq->value >= 2346);
2236 vwrq->fixed = 1;
2237
2238 return 0;
2239}
2240
2241static int atmel_set_freq(struct net_device *dev,
2242 struct iw_request_info *info,
2243 struct iw_freq *fwrq,
2244 char *extra)
2245{
2246 struct atmel_private *priv = netdev_priv(dev);
2247 int rc = -EINPROGRESS; /* Call commit handler */
2248
2249 /* If setting by frequency, convert to a channel */
2250 if (fwrq->e == 1) {
2251 int f = fwrq->m / 100000;
2252
2253 /* Hack to fall through... */
2254 fwrq->e = 0;
2255 fwrq->m = ieee80211_frequency_to_channel(f);
2256 }
2257 /* Setting by channel number */
2258 if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2259 rc = -EOPNOTSUPP;
2260 else {
2261 int channel = fwrq->m;
2262 if (atmel_validate_channel(priv, channel) == 0) {
2263 priv->channel = channel;
2264 } else {
2265 rc = -EINVAL;
2266 }
2267 }
2268 return rc;
2269}
2270
2271static int atmel_get_freq(struct net_device *dev,
2272 struct iw_request_info *info,
2273 struct iw_freq *fwrq,
2274 char *extra)
2275{
2276 struct atmel_private *priv = netdev_priv(dev);
2277
2278 fwrq->m = priv->channel;
2279 fwrq->e = 0;
2280 return 0;
2281}
2282
2283static int atmel_set_scan(struct net_device *dev,
2284 struct iw_request_info *info,
2285 struct iw_point *dwrq,
2286 char *extra)
2287{
2288 struct atmel_private *priv = netdev_priv(dev);
2289 unsigned long flags;
2290
2291 /* Note : you may have realised that, as this is a SET operation,
2292 * this is privileged and therefore a normal user can't
2293 * perform scanning.
2294 * This is not an error, while the device perform scanning,
2295 * traffic doesn't flow, so it's a perfect DoS...
2296 * Jean II */
2297
2298 if (priv->station_state == STATION_STATE_DOWN)
2299 return -EAGAIN;
2300
2301 /* Timeout old surveys. */
2302 if (time_after(jiffies, priv->last_survey + 20 * HZ))
2303 priv->site_survey_state = SITE_SURVEY_IDLE;
2304 priv->last_survey = jiffies;
2305
2306 /* Initiate a scan command */
2307 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2308 return -EBUSY;
2309
2310 del_timer_sync(&priv->management_timer);
2311 spin_lock_irqsave(&priv->irqlock, flags);
2312
2313 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2314 priv->fast_scan = 0;
2315 atmel_scan(priv, 0);
2316 spin_unlock_irqrestore(&priv->irqlock, flags);
2317
2318 return 0;
2319}
2320
2321static int atmel_get_scan(struct net_device *dev,
2322 struct iw_request_info *info,
2323 struct iw_point *dwrq,
2324 char *extra)
2325{
2326 struct atmel_private *priv = netdev_priv(dev);
2327 int i;
2328 char *current_ev = extra;
2329 struct iw_event iwe;
2330
2331 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2332 return -EAGAIN;
2333
2334 for (i = 0; i < priv->BSS_list_entries; i++) {
2335 iwe.cmd = SIOCGIWAP;
2336 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2337 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2338 current_ev = iwe_stream_add_event(info, current_ev,
2339 extra + IW_SCAN_MAX_DATA,
2340 &iwe, IW_EV_ADDR_LEN);
2341
2342 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2343 if (iwe.u.data.length > 32)
2344 iwe.u.data.length = 32;
2345 iwe.cmd = SIOCGIWESSID;
2346 iwe.u.data.flags = 1;
2347 current_ev = iwe_stream_add_point(info, current_ev,
2348 extra + IW_SCAN_MAX_DATA,
2349 &iwe, priv->BSSinfo[i].SSID);
2350
2351 iwe.cmd = SIOCGIWMODE;
2352 iwe.u.mode = priv->BSSinfo[i].BSStype;
2353 current_ev = iwe_stream_add_event(info, current_ev,
2354 extra + IW_SCAN_MAX_DATA,
2355 &iwe, IW_EV_UINT_LEN);
2356
2357 iwe.cmd = SIOCGIWFREQ;
2358 iwe.u.freq.m = priv->BSSinfo[i].channel;
2359 iwe.u.freq.e = 0;
2360 current_ev = iwe_stream_add_event(info, current_ev,
2361 extra + IW_SCAN_MAX_DATA,
2362 &iwe, IW_EV_FREQ_LEN);
2363
2364 /* Add quality statistics */
2365 iwe.cmd = IWEVQUAL;
2366 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2367 iwe.u.qual.qual = iwe.u.qual.level;
2368 /* iwe.u.qual.noise = SOMETHING */
2369 current_ev = iwe_stream_add_event(info, current_ev,
2370 extra + IW_SCAN_MAX_DATA,
2371 &iwe, IW_EV_QUAL_LEN);
2372
2373
2374 iwe.cmd = SIOCGIWENCODE;
2375 if (priv->BSSinfo[i].UsingWEP)
2376 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2377 else
2378 iwe.u.data.flags = IW_ENCODE_DISABLED;
2379 iwe.u.data.length = 0;
2380 current_ev = iwe_stream_add_point(info, current_ev,
2381 extra + IW_SCAN_MAX_DATA,
2382 &iwe, NULL);
2383 }
2384
2385 /* Length of data */
2386 dwrq->length = (current_ev - extra);
2387 dwrq->flags = 0;
2388
2389 return 0;
2390}
2391
2392static int atmel_get_range(struct net_device *dev,
2393 struct iw_request_info *info,
2394 struct iw_point *dwrq,
2395 char *extra)
2396{
2397 struct atmel_private *priv = netdev_priv(dev);
2398 struct iw_range *range = (struct iw_range *) extra;
2399 int k, i, j;
2400
2401 dwrq->length = sizeof(struct iw_range);
2402 memset(range, 0, sizeof(struct iw_range));
2403 range->min_nwid = 0x0000;
2404 range->max_nwid = 0x0000;
2405 range->num_channels = 0;
2406 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2407 if (priv->reg_domain == channel_table[j].reg_domain) {
2408 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2409 break;
2410 }
2411 if (range->num_channels != 0) {
2412 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2413 range->freq[k].i = i; /* List index */
2414
2415 /* Values in MHz -> * 10^5 * 10 */
2416 range->freq[k].m = 100000 *
2417 ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2418 range->freq[k++].e = 1;
2419 }
2420 range->num_frequency = k;
2421 }
2422
2423 range->max_qual.qual = 100;
2424 range->max_qual.level = 100;
2425 range->max_qual.noise = 0;
2426 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2427
2428 range->avg_qual.qual = 50;
2429 range->avg_qual.level = 50;
2430 range->avg_qual.noise = 0;
2431 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2432
2433 range->sensitivity = 0;
2434
2435 range->bitrate[0] = 1000000;
2436 range->bitrate[1] = 2000000;
2437 range->bitrate[2] = 5500000;
2438 range->bitrate[3] = 11000000;
2439 range->num_bitrates = 4;
2440
2441 range->min_rts = 0;
2442 range->max_rts = 2347;
2443 range->min_frag = 256;
2444 range->max_frag = 2346;
2445
2446 range->encoding_size[0] = 5;
2447 range->encoding_size[1] = 13;
2448 range->num_encoding_sizes = 2;
2449 range->max_encoding_tokens = 4;
2450
2451 range->pmp_flags = IW_POWER_ON;
2452 range->pmt_flags = IW_POWER_ON;
2453 range->pm_capa = 0;
2454
2455 range->we_version_source = WIRELESS_EXT;
2456 range->we_version_compiled = WIRELESS_EXT;
2457 range->retry_capa = IW_RETRY_LIMIT ;
2458 range->retry_flags = IW_RETRY_LIMIT;
2459 range->r_time_flags = 0;
2460 range->min_retry = 1;
2461 range->max_retry = 65535;
2462
2463 return 0;
2464}
2465
2466static int atmel_set_wap(struct net_device *dev,
2467 struct iw_request_info *info,
2468 struct sockaddr *awrq,
2469 char *extra)
2470{
2471 struct atmel_private *priv = netdev_priv(dev);
2472 int i;
2473 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2474 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2475 unsigned long flags;
2476
2477 if (awrq->sa_family != ARPHRD_ETHER)
2478 return -EINVAL;
2479
2480 if (!memcmp(any, awrq->sa_data, 6) ||
2481 !memcmp(off, awrq->sa_data, 6)) {
2482 del_timer_sync(&priv->management_timer);
2483 spin_lock_irqsave(&priv->irqlock, flags);
2484 atmel_scan(priv, 1);
2485 spin_unlock_irqrestore(&priv->irqlock, flags);
2486 return 0;
2487 }
2488
2489 for (i = 0; i < priv->BSS_list_entries; i++) {
2490 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2491 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2492 return -EINVAL;
2493 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2494 return -EINVAL;
2495 } else {
2496 del_timer_sync(&priv->management_timer);
2497 spin_lock_irqsave(&priv->irqlock, flags);
2498 atmel_join_bss(priv, i);
2499 spin_unlock_irqrestore(&priv->irqlock, flags);
2500 return 0;
2501 }
2502 }
2503 }
2504
2505 return -EINVAL;
2506}
2507
2508static int atmel_config_commit(struct net_device *dev,
2509 struct iw_request_info *info, /* NULL */
2510 void *zwrq, /* NULL */
2511 char *extra) /* NULL */
2512{
2513 return atmel_open(dev);
2514}
2515
2516static const iw_handler atmel_handler[] =
2517{
2518 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
2519 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
2520 (iw_handler) NULL, /* SIOCSIWNWID */
2521 (iw_handler) NULL, /* SIOCGIWNWID */
2522 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2523 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2524 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2525 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
2526 (iw_handler) NULL, /* SIOCSIWSENS */
2527 (iw_handler) NULL, /* SIOCGIWSENS */
2528 (iw_handler) NULL, /* SIOCSIWRANGE */
2529 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2530 (iw_handler) NULL, /* SIOCSIWPRIV */
2531 (iw_handler) NULL, /* SIOCGIWPRIV */
2532 (iw_handler) NULL, /* SIOCSIWSTATS */
2533 (iw_handler) NULL, /* SIOCGIWSTATS */
2534 (iw_handler) NULL, /* SIOCSIWSPY */
2535 (iw_handler) NULL, /* SIOCGIWSPY */
2536 (iw_handler) NULL, /* -- hole -- */
2537 (iw_handler) NULL, /* -- hole -- */
2538 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2539 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2540 (iw_handler) NULL, /* -- hole -- */
2541 (iw_handler) NULL, /* SIOCGIWAPLIST */
2542 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2543 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2544 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2545 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
2546 (iw_handler) NULL, /* SIOCSIWNICKN */
2547 (iw_handler) NULL, /* SIOCGIWNICKN */
2548 (iw_handler) NULL, /* -- hole -- */
2549 (iw_handler) NULL, /* -- hole -- */
2550 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2551 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2552 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2553 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2554 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2555 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
2556 (iw_handler) NULL, /* SIOCSIWTXPOW */
2557 (iw_handler) NULL, /* SIOCGIWTXPOW */
2558 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2559 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2560 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2561 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2562 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2563 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
2564 (iw_handler) NULL, /* -- hole -- */
2565 (iw_handler) NULL, /* -- hole -- */
2566 (iw_handler) NULL, /* SIOCSIWGENIE */
2567 (iw_handler) NULL, /* SIOCGIWGENIE */
2568 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2569 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2570 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2571 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2572 (iw_handler) NULL, /* SIOCSIWPMKSA */
2573};
2574
2575static const iw_handler atmel_private_handler[] =
2576{
2577 NULL, /* SIOCIWFIRSTPRIV */
2578};
2579
2580struct atmel_priv_ioctl {
2581 char id[32];
2582 unsigned char __user *data;
2583 unsigned short len;
2584};
2585
2586#define ATMELFWL SIOCIWFIRSTPRIV
2587#define ATMELIDIFC ATMELFWL + 1
2588#define ATMELRD ATMELFWL + 2
2589#define ATMELMAGIC 0x51807
2590#define REGDOMAINSZ 20
2591
2592static const struct iw_priv_args atmel_private_args[] = {
2593 {
2594 .cmd = ATMELFWL,
2595 .set_args = IW_PRIV_TYPE_BYTE
2596 | IW_PRIV_SIZE_FIXED
2597 | sizeof(struct atmel_priv_ioctl),
2598 .get_args = IW_PRIV_TYPE_NONE,
2599 .name = "atmelfwl"
2600 }, {
2601 .cmd = ATMELIDIFC,
2602 .set_args = IW_PRIV_TYPE_NONE,
2603 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2604 .name = "atmelidifc"
2605 }, {
2606 .cmd = ATMELRD,
2607 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2608 .get_args = IW_PRIV_TYPE_NONE,
2609 .name = "regdomain"
2610 },
2611};
2612
2613static const struct iw_handler_def atmel_handler_def = {
2614 .num_standard = ARRAY_SIZE(atmel_handler),
2615 .num_private = ARRAY_SIZE(atmel_private_handler),
2616 .num_private_args = ARRAY_SIZE(atmel_private_args),
2617 .standard = (iw_handler *) atmel_handler,
2618 .private = (iw_handler *) atmel_private_handler,
2619 .private_args = (struct iw_priv_args *) atmel_private_args,
2620 .get_wireless_stats = atmel_get_wireless_stats
2621};
2622
2623static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2624{
2625 int i, rc = 0;
2626 struct atmel_private *priv = netdev_priv(dev);
2627 struct atmel_priv_ioctl com;
2628 struct iwreq *wrq = (struct iwreq *) rq;
2629 unsigned char *new_firmware;
2630 char domain[REGDOMAINSZ + 1];
2631
2632 switch (cmd) {
2633 case ATMELIDIFC:
2634 wrq->u.param.value = ATMELMAGIC;
2635 break;
2636
2637 case ATMELFWL:
2638 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2639 rc = -EFAULT;
2640 break;
2641 }
2642
2643 if (!capable(CAP_NET_ADMIN)) {
2644 rc = -EPERM;
2645 break;
2646 }
2647
2648 new_firmware = memdup_user(com.data, com.len);
2649 if (IS_ERR(new_firmware)) {
2650 rc = PTR_ERR(new_firmware);
2651 break;
2652 }
2653
2654 kfree(priv->firmware);
2655
2656 priv->firmware = new_firmware;
2657 priv->firmware_length = com.len;
2658 strncpy(priv->firmware_id, com.id, 31);
2659 priv->firmware_id[31] = '\0';
2660 break;
2661
2662 case ATMELRD:
2663 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2664 rc = -EFAULT;
2665 break;
2666 }
2667
2668 if (!capable(CAP_NET_ADMIN)) {
2669 rc = -EPERM;
2670 break;
2671 }
2672
2673 domain[REGDOMAINSZ] = 0;
2674 rc = -EINVAL;
2675 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2676 if (!strcasecmp(channel_table[i].name, domain)) {
2677 priv->config_reg_domain = channel_table[i].reg_domain;
2678 rc = 0;
2679 }
2680 }
2681
2682 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2683 rc = atmel_open(dev);
2684 break;
2685
2686 default:
2687 rc = -EOPNOTSUPP;
2688 }
2689
2690 return rc;
2691}
2692
2693struct auth_body {
2694 __le16 alg;
2695 __le16 trans_seq;
2696 __le16 status;
2697 u8 el_id;
2698 u8 chall_text_len;
2699 u8 chall_text[253];
2700};
2701
2702static void atmel_enter_state(struct atmel_private *priv, int new_state)
2703{
2704 int old_state = priv->station_state;
2705
2706 if (new_state == old_state)
2707 return;
2708
2709 priv->station_state = new_state;
2710
2711 if (new_state == STATION_STATE_READY) {
2712 netif_start_queue(priv->dev);
2713 netif_carrier_on(priv->dev);
2714 }
2715
2716 if (old_state == STATION_STATE_READY) {
2717 netif_carrier_off(priv->dev);
2718 if (netif_running(priv->dev))
2719 netif_stop_queue(priv->dev);
2720 priv->last_beacon_timestamp = 0;
2721 }
2722}
2723
2724static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2725{
2726 struct {
2727 u8 BSSID[ETH_ALEN];
2728 u8 SSID[MAX_SSID_LENGTH];
2729 u8 scan_type;
2730 u8 channel;
2731 __le16 BSS_type;
2732 __le16 min_channel_time;
2733 __le16 max_channel_time;
2734 u8 options;
2735 u8 SSID_size;
2736 } cmd;
2737
2738 eth_broadcast_addr(cmd.BSSID);
2739
2740 if (priv->fast_scan) {
2741 cmd.SSID_size = priv->SSID_size;
2742 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2743 cmd.min_channel_time = cpu_to_le16(10);
2744 cmd.max_channel_time = cpu_to_le16(50);
2745 } else {
2746 priv->BSS_list_entries = 0;
2747 cmd.SSID_size = 0;
2748 cmd.min_channel_time = cpu_to_le16(10);
2749 cmd.max_channel_time = cpu_to_le16(120);
2750 }
2751
2752 cmd.options = 0;
2753
2754 if (!specific_ssid)
2755 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2756
2757 cmd.channel = (priv->channel & 0x7f);
2758 cmd.scan_type = SCAN_TYPE_ACTIVE;
2759 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2760 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2761
2762 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2763
2764 /* This must come after all hardware access to avoid being messed up
2765 by stuff happening in interrupt context after we leave STATE_DOWN */
2766 atmel_enter_state(priv, STATION_STATE_SCANNING);
2767}
2768
2769static void join(struct atmel_private *priv, int type)
2770{
2771 struct {
2772 u8 BSSID[6];
2773 u8 SSID[MAX_SSID_LENGTH];
2774 u8 BSS_type; /* this is a short in a scan command - weird */
2775 u8 channel;
2776 __le16 timeout;
2777 u8 SSID_size;
2778 u8 reserved;
2779 } cmd;
2780
2781 cmd.SSID_size = priv->SSID_size;
2782 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2783 memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2784 cmd.channel = (priv->channel & 0x7f);
2785 cmd.BSS_type = type;
2786 cmd.timeout = cpu_to_le16(2000);
2787
2788 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2789}
2790
2791static void start(struct atmel_private *priv, int type)
2792{
2793 struct {
2794 u8 BSSID[6];
2795 u8 SSID[MAX_SSID_LENGTH];
2796 u8 BSS_type;
2797 u8 channel;
2798 u8 SSID_size;
2799 u8 reserved[3];
2800 } cmd;
2801
2802 cmd.SSID_size = priv->SSID_size;
2803 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2804 memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2805 cmd.BSS_type = type;
2806 cmd.channel = (priv->channel & 0x7f);
2807
2808 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2809}
2810
2811static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2812 u8 channel)
2813{
2814 int rejoin = 0;
2815 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2816 SHORT_PREAMBLE : LONG_PREAMBLE;
2817
2818 if (priv->preamble != new) {
2819 priv->preamble = new;
2820 rejoin = 1;
2821 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2822 }
2823
2824 if (priv->channel != channel) {
2825 priv->channel = channel;
2826 rejoin = 1;
2827 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2828 }
2829
2830 if (rejoin) {
2831 priv->station_is_associated = 0;
2832 atmel_enter_state(priv, STATION_STATE_JOINNING);
2833
2834 if (priv->operating_mode == IW_MODE_INFRA)
2835 join(priv, BSS_TYPE_INFRASTRUCTURE);
2836 else
2837 join(priv, BSS_TYPE_AD_HOC);
2838 }
2839}
2840
2841static void send_authentication_request(struct atmel_private *priv, u16 system,
2842 u8 *challenge, int challenge_len)
2843{
2844 struct ieee80211_hdr header;
2845 struct auth_body auth;
2846
2847 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2848 header.duration_id = cpu_to_le16(0x8000);
2849 header.seq_ctrl = 0;
2850 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2851 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2852 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2853
2854 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2855 /* no WEP for authentication frames with TrSeqNo 1 */
2856 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2857
2858 auth.alg = cpu_to_le16(system);
2859
2860 auth.status = 0;
2861 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2862 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2863 priv->CurrentAuthentTransactionSeqNum += 2;
2864
2865 if (challenge_len != 0) {
2866 auth.el_id = 16; /* challenge_text */
2867 auth.chall_text_len = challenge_len;
2868 memcpy(auth.chall_text, challenge, challenge_len);
2869 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2870 } else {
2871 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2872 }
2873}
2874
2875static void send_association_request(struct atmel_private *priv, int is_reassoc)
2876{
2877 u8 *ssid_el_p;
2878 int bodysize;
2879 struct ieee80211_hdr header;
2880 struct ass_req_format {
2881 __le16 capability;
2882 __le16 listen_interval;
2883 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2884 u8 ssid_el_id;
2885 u8 ssid_len;
2886 u8 ssid[MAX_SSID_LENGTH];
2887 u8 sup_rates_el_id;
2888 u8 sup_rates_len;
2889 u8 rates[4];
2890 } body;
2891
2892 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2893 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2894 header.duration_id = cpu_to_le16(0x8000);
2895 header.seq_ctrl = 0;
2896
2897 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2898 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2899 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2900
2901 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2902 if (priv->wep_is_on)
2903 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2904 if (priv->preamble == SHORT_PREAMBLE)
2905 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2906
2907 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2908
2909 /* current AP address - only in reassoc frame */
2910 if (is_reassoc) {
2911 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2912 ssid_el_p = &body.ssid_el_id;
2913 bodysize = 18 + priv->SSID_size;
2914 } else {
2915 ssid_el_p = &body.ap[0];
2916 bodysize = 12 + priv->SSID_size;
2917 }
2918
2919 ssid_el_p[0] = WLAN_EID_SSID;
2920 ssid_el_p[1] = priv->SSID_size;
2921 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2922 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2923 ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2924 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2925
2926 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2927}
2928
2929static int is_frame_from_current_bss(struct atmel_private *priv,
2930 struct ieee80211_hdr *header)
2931{
2932 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2933 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2934 else
2935 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2936}
2937
2938static int retrieve_bss(struct atmel_private *priv)
2939{
2940 int i;
2941 int max_rssi = -128;
2942 int max_index = -1;
2943
2944 if (priv->BSS_list_entries == 0)
2945 return -1;
2946
2947 if (priv->connect_to_any_BSS) {
2948 /* Select a BSS with the max-RSSI but of the same type and of
2949 the same WEP mode and that it is not marked as 'bad' (i.e.
2950 we had previously failed to connect to this BSS with the
2951 settings that we currently use) */
2952 priv->current_BSS = 0;
2953 for (i = 0; i < priv->BSS_list_entries; i++) {
2954 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2955 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2956 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2957 !(priv->BSSinfo[i].channel & 0x80)) {
2958 max_rssi = priv->BSSinfo[i].RSSI;
2959 priv->current_BSS = max_index = i;
2960 }
2961 }
2962 return max_index;
2963 }
2964
2965 for (i = 0; i < priv->BSS_list_entries; i++) {
2966 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2967 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2968 priv->operating_mode == priv->BSSinfo[i].BSStype &&
2969 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2970 if (priv->BSSinfo[i].RSSI >= max_rssi) {
2971 max_rssi = priv->BSSinfo[i].RSSI;
2972 max_index = i;
2973 }
2974 }
2975 }
2976 return max_index;
2977}
2978
2979static void store_bss_info(struct atmel_private *priv,
2980 struct ieee80211_hdr *header, u16 capability,
2981 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
2982 u8 *ssid, int is_beacon)
2983{
2984 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
2985 int i, index;
2986
2987 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
2988 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
2989 index = i;
2990
2991 /* If we process a probe and an entry from this BSS exists
2992 we will update the BSS entry with the info from this BSS.
2993 If we process a beacon we will only update RSSI */
2994
2995 if (index == -1) {
2996 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
2997 return;
2998 index = priv->BSS_list_entries++;
2999 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
3000 priv->BSSinfo[index].RSSI = rssi;
3001 } else {
3002 if (rssi > priv->BSSinfo[index].RSSI)
3003 priv->BSSinfo[index].RSSI = rssi;
3004 if (is_beacon)
3005 return;
3006 }
3007
3008 priv->BSSinfo[index].channel = channel;
3009 priv->BSSinfo[index].beacon_period = beacon_period;
3010 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3011 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3012 priv->BSSinfo[index].SSIDsize = ssid_len;
3013
3014 if (capability & WLAN_CAPABILITY_IBSS)
3015 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3016 else if (capability & WLAN_CAPABILITY_ESS)
3017 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3018
3019 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3020 SHORT_PREAMBLE : LONG_PREAMBLE;
3021}
3022
3023static void authenticate(struct atmel_private *priv, u16 frame_len)
3024{
3025 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3026 u16 status = le16_to_cpu(auth->status);
3027 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3028 u16 system = le16_to_cpu(auth->alg);
3029
3030 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3031 /* no WEP */
3032 if (priv->station_was_associated) {
3033 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3034 send_association_request(priv, 1);
3035 return;
3036 } else {
3037 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3038 send_association_request(priv, 0);
3039 return;
3040 }
3041 }
3042
3043 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3044 int should_associate = 0;
3045 /* WEP */
3046 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3047 return;
3048
3049 if (system == WLAN_AUTH_OPEN) {
3050 if (trans_seq_no == 0x0002) {
3051 should_associate = 1;
3052 }
3053 } else if (system == WLAN_AUTH_SHARED_KEY) {
3054 if (trans_seq_no == 0x0002 &&
3055 auth->el_id == WLAN_EID_CHALLENGE) {
3056 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3057 return;
3058 } else if (trans_seq_no == 0x0004) {
3059 should_associate = 1;
3060 }
3061 }
3062
3063 if (should_associate) {
3064 if (priv->station_was_associated) {
3065 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3066 send_association_request(priv, 1);
3067 return;
3068 } else {
3069 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3070 send_association_request(priv, 0);
3071 return;
3072 }
3073 }
3074 }
3075
3076 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3077 /* Flip back and forth between WEP auth modes until the max
3078 * authentication tries has been exceeded.
3079 */
3080 if (system == WLAN_AUTH_OPEN) {
3081 priv->CurrentAuthentTransactionSeqNum = 0x001;
3082 priv->exclude_unencrypted = 1;
3083 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3084 return;
3085 } else if (system == WLAN_AUTH_SHARED_KEY
3086 && priv->wep_is_on) {
3087 priv->CurrentAuthentTransactionSeqNum = 0x001;
3088 priv->exclude_unencrypted = 0;
3089 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3090 return;
3091 } else if (priv->connect_to_any_BSS) {
3092 int bss_index;
3093
3094 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3095
3096 if ((bss_index = retrieve_bss(priv)) != -1) {
3097 atmel_join_bss(priv, bss_index);
3098 return;
3099 }
3100 }
3101 }
3102
3103 priv->AuthenticationRequestRetryCnt = 0;
3104 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3105 priv->station_is_associated = 0;
3106}
3107
3108static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3109{
3110 struct ass_resp_format {
3111 __le16 capability;
3112 __le16 status;
3113 __le16 ass_id;
3114 u8 el_id;
3115 u8 length;
3116 u8 rates[4];
3117 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3118
3119 u16 status = le16_to_cpu(ass_resp->status);
3120 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3121 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3122
3123 union iwreq_data wrqu;
3124
3125 if (frame_len < 8 + rates_len)
3126 return;
3127
3128 if (status == WLAN_STATUS_SUCCESS) {
3129 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3130 priv->AssociationRequestRetryCnt = 0;
3131 else
3132 priv->ReAssociationRequestRetryCnt = 0;
3133
3134 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3135 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3136 atmel_set_mib(priv, Phy_Mib_Type,
3137 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3138 if (priv->power_mode == 0) {
3139 priv->listen_interval = 1;
3140 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3141 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3142 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3143 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3144 } else {
3145 priv->listen_interval = 2;
3146 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3147 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3148 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3149 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3150 }
3151
3152 priv->station_is_associated = 1;
3153 priv->station_was_associated = 1;
3154 atmel_enter_state(priv, STATION_STATE_READY);
3155
3156 /* Send association event to userspace */
3157 wrqu.data.length = 0;
3158 wrqu.data.flags = 0;
3159 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3160 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3161 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3162
3163 return;
3164 }
3165
3166 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3167 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3168 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3169 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3170 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3171 priv->AssociationRequestRetryCnt++;
3172 send_association_request(priv, 0);
3173 return;
3174 }
3175
3176 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3177 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3178 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3179 priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3180 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3181 priv->ReAssociationRequestRetryCnt++;
3182 send_association_request(priv, 1);
3183 return;
3184 }
3185
3186 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3187 priv->station_is_associated = 0;
3188
3189 if (priv->connect_to_any_BSS) {
3190 int bss_index;
3191 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3192
3193 if ((bss_index = retrieve_bss(priv)) != -1)
3194 atmel_join_bss(priv, bss_index);
3195 }
3196}
3197
3198static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3199{
3200 struct bss_info *bss = &priv->BSSinfo[bss_index];
3201
3202 memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3203 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3204
3205 /* The WPA stuff cares about the current AP address */
3206 if (priv->use_wpa)
3207 build_wpa_mib(priv);
3208
3209 /* When switching to AdHoc turn OFF Power Save if needed */
3210
3211 if (bss->BSStype == IW_MODE_ADHOC &&
3212 priv->operating_mode != IW_MODE_ADHOC &&
3213 priv->power_mode) {
3214 priv->power_mode = 0;
3215 priv->listen_interval = 1;
3216 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3217 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3218 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3219 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3220 }
3221
3222 priv->operating_mode = bss->BSStype;
3223 priv->channel = bss->channel & 0x7f;
3224 priv->beacon_period = bss->beacon_period;
3225
3226 if (priv->preamble != bss->preamble) {
3227 priv->preamble = bss->preamble;
3228 atmel_set_mib8(priv, Local_Mib_Type,
3229 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3230 }
3231
3232 if (!priv->wep_is_on && bss->UsingWEP) {
3233 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3234 priv->station_is_associated = 0;
3235 return;
3236 }
3237
3238 if (priv->wep_is_on && !bss->UsingWEP) {
3239 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3240 priv->station_is_associated = 0;
3241 return;
3242 }
3243
3244 atmel_enter_state(priv, STATION_STATE_JOINNING);
3245
3246 if (priv->operating_mode == IW_MODE_INFRA)
3247 join(priv, BSS_TYPE_INFRASTRUCTURE);
3248 else
3249 join(priv, BSS_TYPE_AD_HOC);
3250}
3251
3252static void restart_search(struct atmel_private *priv)
3253{
3254 int bss_index;
3255
3256 if (!priv->connect_to_any_BSS) {
3257 atmel_scan(priv, 1);
3258 } else {
3259 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3260
3261 if ((bss_index = retrieve_bss(priv)) != -1)
3262 atmel_join_bss(priv, bss_index);
3263 else
3264 atmel_scan(priv, 0);
3265 }
3266}
3267
3268static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3269{
3270 u8 old = priv->wstats.qual.level;
3271 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3272
3273 switch (priv->firmware_type) {
3274 case ATMEL_FW_TYPE_502E:
3275 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3276 break;
3277 default:
3278 break;
3279 }
3280
3281 rssi = rssi * 100 / max_rssi;
3282 if ((rssi + old) % 2)
3283 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3284 else
3285 priv->wstats.qual.level = (rssi + old) / 2;
3286 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3287 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3288}
3289
3290static void atmel_smooth_qual(struct atmel_private *priv)
3291{
3292 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3293 while (time_diff--) {
3294 priv->last_qual += HZ;
3295 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3296 priv->wstats.qual.qual +=
3297 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3298 priv->beacons_this_sec = 0;
3299 }
3300 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3301 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3302}
3303
3304/* deals with incoming management frames. */
3305static void atmel_management_frame(struct atmel_private *priv,
3306 struct ieee80211_hdr *header,
3307 u16 frame_len, u8 rssi)
3308{
3309 u16 subtype;
3310
3311 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3312 switch (subtype) {
3313 case IEEE80211_STYPE_BEACON:
3314 case IEEE80211_STYPE_PROBE_RESP:
3315
3316 /* beacon frame has multiple variable-length fields -
3317 never let an engineer loose with a data structure design. */
3318 {
3319 struct beacon_format {
3320 __le64 timestamp;
3321 __le16 interval;
3322 __le16 capability;
3323 u8 ssid_el_id;
3324 u8 ssid_length;
3325 /* ssid here */
3326 u8 rates_el_id;
3327 u8 rates_length;
3328 /* rates here */
3329 u8 ds_el_id;
3330 u8 ds_length;
3331 /* ds here */
3332 } *beacon = (struct beacon_format *)priv->rx_buf;
3333
3334 u8 channel, rates_length, ssid_length;
3335 u64 timestamp = le64_to_cpu(beacon->timestamp);
3336 u16 beacon_interval = le16_to_cpu(beacon->interval);
3337 u16 capability = le16_to_cpu(beacon->capability);
3338 u8 *beaconp = priv->rx_buf;
3339 ssid_length = beacon->ssid_length;
3340 /* this blows chunks. */
3341 if (frame_len < 14 || frame_len < ssid_length + 15)
3342 return;
3343 rates_length = beaconp[beacon->ssid_length + 15];
3344 if (frame_len < ssid_length + rates_length + 18)
3345 return;
3346 if (ssid_length > MAX_SSID_LENGTH)
3347 return;
3348 channel = beaconp[ssid_length + rates_length + 18];
3349
3350 if (priv->station_state == STATION_STATE_READY) {
3351 smooth_rssi(priv, rssi);
3352 if (is_frame_from_current_bss(priv, header)) {
3353 priv->beacons_this_sec++;
3354 atmel_smooth_qual(priv);
3355 if (priv->last_beacon_timestamp) {
3356 /* Note truncate this to 32 bits - kernel can't divide a long long */
3357 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3358 int beacons = beacon_delay / (beacon_interval * 1000);
3359 if (beacons > 1)
3360 priv->wstats.miss.beacon += beacons - 1;
3361 }
3362 priv->last_beacon_timestamp = timestamp;
3363 handle_beacon_probe(priv, capability, channel);
3364 }
3365 }
3366
3367 if (priv->station_state == STATION_STATE_SCANNING)
3368 store_bss_info(priv, header, capability,
3369 beacon_interval, channel, rssi,
3370 ssid_length,
3371 &beacon->rates_el_id,
3372 subtype == IEEE80211_STYPE_BEACON);
3373 }
3374 break;
3375
3376 case IEEE80211_STYPE_AUTH:
3377
3378 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3379 authenticate(priv, frame_len);
3380
3381 break;
3382
3383 case IEEE80211_STYPE_ASSOC_RESP:
3384 case IEEE80211_STYPE_REASSOC_RESP:
3385
3386 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3387 priv->station_state == STATION_STATE_REASSOCIATING)
3388 associate(priv, frame_len, subtype);
3389
3390 break;
3391
3392 case IEEE80211_STYPE_DISASSOC:
3393 if (priv->station_is_associated &&
3394 priv->operating_mode == IW_MODE_INFRA &&
3395 is_frame_from_current_bss(priv, header)) {
3396 priv->station_was_associated = 0;
3397 priv->station_is_associated = 0;
3398
3399 atmel_enter_state(priv, STATION_STATE_JOINNING);
3400 join(priv, BSS_TYPE_INFRASTRUCTURE);
3401 }
3402
3403 break;
3404
3405 case IEEE80211_STYPE_DEAUTH:
3406 if (priv->operating_mode == IW_MODE_INFRA &&
3407 is_frame_from_current_bss(priv, header)) {
3408 priv->station_was_associated = 0;
3409
3410 atmel_enter_state(priv, STATION_STATE_JOINNING);
3411 join(priv, BSS_TYPE_INFRASTRUCTURE);
3412 }
3413
3414 break;
3415 }
3416}
3417
3418/* run when timer expires */
3419static void atmel_management_timer(struct timer_list *t)
3420{
3421 struct atmel_private *priv = from_timer(priv, t, management_timer);
3422 unsigned long flags;
3423
3424 /* Check if the card has been yanked. */
3425 if (priv->card && priv->present_callback &&
3426 !(*priv->present_callback)(priv->card))
3427 return;
3428
3429 spin_lock_irqsave(&priv->irqlock, flags);
3430
3431 switch (priv->station_state) {
3432
3433 case STATION_STATE_AUTHENTICATING:
3434 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3435 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3436 priv->station_is_associated = 0;
3437 priv->AuthenticationRequestRetryCnt = 0;
3438 restart_search(priv);
3439 } else {
3440 int auth = WLAN_AUTH_OPEN;
3441 priv->AuthenticationRequestRetryCnt++;
3442 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3443 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3444 if (priv->wep_is_on && priv->exclude_unencrypted)
3445 auth = WLAN_AUTH_SHARED_KEY;
3446 send_authentication_request(priv, auth, NULL, 0);
3447 }
3448 break;
3449
3450 case STATION_STATE_ASSOCIATING:
3451 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3452 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3453 priv->station_is_associated = 0;
3454 priv->AssociationRequestRetryCnt = 0;
3455 restart_search(priv);
3456 } else {
3457 priv->AssociationRequestRetryCnt++;
3458 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3459 send_association_request(priv, 0);
3460 }
3461 break;
3462
3463 case STATION_STATE_REASSOCIATING:
3464 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3465 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3466 priv->station_is_associated = 0;
3467 priv->ReAssociationRequestRetryCnt = 0;
3468 restart_search(priv);
3469 } else {
3470 priv->ReAssociationRequestRetryCnt++;
3471 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3472 send_association_request(priv, 1);
3473 }
3474 break;
3475
3476 default:
3477 break;
3478 }
3479
3480 spin_unlock_irqrestore(&priv->irqlock, flags);
3481}
3482
3483static void atmel_command_irq(struct atmel_private *priv)
3484{
3485 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3486 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3487 int fast_scan;
3488 union iwreq_data wrqu;
3489
3490 if (status == CMD_STATUS_IDLE ||
3491 status == CMD_STATUS_IN_PROGRESS)
3492 return;
3493
3494 switch (command) {
3495 case CMD_Start:
3496 if (status == CMD_STATUS_COMPLETE) {
3497 priv->station_was_associated = priv->station_is_associated;
3498 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3499 (u8 *)priv->CurrentBSSID, 6);
3500 atmel_enter_state(priv, STATION_STATE_READY);
3501 }
3502 break;
3503
3504 case CMD_Scan:
3505 fast_scan = priv->fast_scan;
3506 priv->fast_scan = 0;
3507
3508 if (status != CMD_STATUS_COMPLETE) {
3509 atmel_scan(priv, 1);
3510 } else {
3511 int bss_index = retrieve_bss(priv);
3512 int notify_scan_complete = 1;
3513 if (bss_index != -1) {
3514 atmel_join_bss(priv, bss_index);
3515 } else if (priv->operating_mode == IW_MODE_ADHOC &&
3516 priv->SSID_size != 0) {
3517 start(priv, BSS_TYPE_AD_HOC);
3518 } else {
3519 priv->fast_scan = !fast_scan;
3520 atmel_scan(priv, 1);
3521 notify_scan_complete = 0;
3522 }
3523 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3524 if (notify_scan_complete) {
3525 wrqu.data.length = 0;
3526 wrqu.data.flags = 0;
3527 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3528 }
3529 }
3530 break;
3531
3532 case CMD_SiteSurvey:
3533 priv->fast_scan = 0;
3534
3535 if (status != CMD_STATUS_COMPLETE)
3536 return;
3537
3538 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3539 if (priv->station_is_associated) {
3540 atmel_enter_state(priv, STATION_STATE_READY);
3541 wrqu.data.length = 0;
3542 wrqu.data.flags = 0;
3543 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3544 } else {
3545 atmel_scan(priv, 1);
3546 }
3547 break;
3548
3549 case CMD_Join:
3550 if (status == CMD_STATUS_COMPLETE) {
3551 if (priv->operating_mode == IW_MODE_ADHOC) {
3552 priv->station_was_associated = priv->station_is_associated;
3553 atmel_enter_state(priv, STATION_STATE_READY);
3554 } else {
3555 int auth = WLAN_AUTH_OPEN;
3556 priv->AuthenticationRequestRetryCnt = 0;
3557 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3558
3559 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3560 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3561 if (priv->wep_is_on && priv->exclude_unencrypted)
3562 auth = WLAN_AUTH_SHARED_KEY;
3563 send_authentication_request(priv, auth, NULL, 0);
3564 }
3565 return;
3566 }
3567
3568 atmel_scan(priv, 1);
3569 }
3570}
3571
3572static int atmel_wakeup_firmware(struct atmel_private *priv)
3573{
3574 struct host_info_struct *iface = &priv->host_info;
3575 u16 mr1, mr3;
3576 int i;
3577
3578 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3579 atmel_set_gcr(priv->dev, GCR_REMAP);
3580
3581 /* wake up on-board processor */
3582 atmel_clear_gcr(priv->dev, 0x0040);
3583 atmel_write16(priv->dev, BSR, BSS_SRAM);
3584
3585 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3586 mdelay(100);
3587
3588 /* and wait for it */
3589 for (i = LOOP_RETRY_LIMIT; i; i--) {
3590 mr1 = atmel_read16(priv->dev, MR1);
3591 mr3 = atmel_read16(priv->dev, MR3);
3592
3593 if (mr3 & MAC_BOOT_COMPLETE)
3594 break;
3595 if (mr1 & MAC_BOOT_COMPLETE &&
3596 priv->bus_type == BUS_TYPE_PCCARD)
3597 break;
3598 }
3599
3600 if (i == 0) {
3601 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3602 return -EIO;
3603 }
3604
3605 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3606 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3607 return -ENODEV;
3608 }
3609
3610 /* now check for completion of MAC initialization through
3611 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3612 MAC initialization, check completion status, set interrupt mask,
3613 enables interrupts and calls Tx and Rx initialization functions */
3614
3615 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3616
3617 for (i = LOOP_RETRY_LIMIT; i; i--) {
3618 mr1 = atmel_read16(priv->dev, MR1);
3619 mr3 = atmel_read16(priv->dev, MR3);
3620
3621 if (mr3 & MAC_INIT_COMPLETE)
3622 break;
3623 if (mr1 & MAC_INIT_COMPLETE &&
3624 priv->bus_type == BUS_TYPE_PCCARD)
3625 break;
3626 }
3627
3628 if (i == 0) {
3629 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3630 priv->dev->name);
3631 return -EIO;
3632 }
3633
3634 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3635 if ((mr3 & MAC_INIT_COMPLETE) &&
3636 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3637 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3638 return -EIO;
3639 }
3640 if ((mr1 & MAC_INIT_COMPLETE) &&
3641 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3642 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3643 return -EIO;
3644 }
3645
3646 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3647 priv->host_info_base, sizeof(*iface));
3648
3649 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3650 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3651 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3652 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3653 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3654 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3655 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3656 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3657 iface->build_version = le16_to_cpu(iface->build_version);
3658 iface->command_pos = le16_to_cpu(iface->command_pos);
3659 iface->major_version = le16_to_cpu(iface->major_version);
3660 iface->minor_version = le16_to_cpu(iface->minor_version);
3661 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3662 iface->mac_status = le16_to_cpu(iface->mac_status);
3663
3664 return 0;
3665}
3666
3667/* determine type of memory and MAC address */
3668static int probe_atmel_card(struct net_device *dev)
3669{
3670 int rc = 0;
3671 struct atmel_private *priv = netdev_priv(dev);
3672
3673 /* reset pccard */
3674 if (priv->bus_type == BUS_TYPE_PCCARD)
3675 atmel_write16(dev, GCR, 0x0060);
3676
3677 atmel_write16(dev, GCR, 0x0040);
3678 msleep(500);
3679
3680 if (atmel_read16(dev, MR2) == 0) {
3681 /* No stored firmware so load a small stub which just
3682 tells us the MAC address */
3683 int i;
3684 priv->card_type = CARD_TYPE_EEPROM;
3685 atmel_write16(dev, BSR, BSS_IRAM);
3686 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3687 atmel_set_gcr(dev, GCR_REMAP);
3688 atmel_clear_gcr(priv->dev, 0x0040);
3689 atmel_write16(dev, BSR, BSS_SRAM);
3690 for (i = LOOP_RETRY_LIMIT; i; i--)
3691 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3692 break;
3693 if (i == 0) {
3694 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3695 } else {
3696 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3697 /* got address, now squash it again until the network
3698 interface is opened */
3699 if (priv->bus_type == BUS_TYPE_PCCARD)
3700 atmel_write16(dev, GCR, 0x0060);
3701 atmel_write16(dev, GCR, 0x0040);
3702 rc = 1;
3703 }
3704 } else if (atmel_read16(dev, MR4) == 0) {
3705 /* Mac address easy in this case. */
3706 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3707 atmel_write16(dev, BSR, 1);
3708 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3709 atmel_write16(dev, BSR, 0x200);
3710 rc = 1;
3711 } else {
3712 /* Standard firmware in flash, boot it up and ask
3713 for the Mac Address */
3714 priv->card_type = CARD_TYPE_SPI_FLASH;
3715 if (atmel_wakeup_firmware(priv) == 0) {
3716 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3717
3718 /* got address, now squash it again until the network
3719 interface is opened */
3720 if (priv->bus_type == BUS_TYPE_PCCARD)
3721 atmel_write16(dev, GCR, 0x0060);
3722 atmel_write16(dev, GCR, 0x0040);
3723 rc = 1;
3724 }
3725 }
3726
3727 if (rc) {
3728 if (dev->dev_addr[0] == 0xFF) {
3729 static const u8 default_mac[] = {
3730 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3731 };
3732 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3733 memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3734 }
3735 }
3736
3737 return rc;
3738}
3739
3740/* Move the encyption information on the MIB structure.
3741 This routine is for the pre-WPA firmware: later firmware has
3742 a different format MIB and a different routine. */
3743static void build_wep_mib(struct atmel_private *priv)
3744{
3745 struct { /* NB this is matched to the hardware, don't change. */
3746 u8 wep_is_on;
3747 u8 default_key; /* 0..3 */
3748 u8 reserved;
3749 u8 exclude_unencrypted;
3750
3751 u32 WEPICV_error_count;
3752 u32 WEP_excluded_count;
3753
3754 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3755 u8 encryption_level; /* 0, 1, 2 */
3756 u8 reserved2[3];
3757 } mib;
3758 int i;
3759
3760 mib.wep_is_on = priv->wep_is_on;
3761 if (priv->wep_is_on) {
3762 if (priv->wep_key_len[priv->default_key] > 5)
3763 mib.encryption_level = 2;
3764 else
3765 mib.encryption_level = 1;
3766 } else {
3767 mib.encryption_level = 0;
3768 }
3769
3770 mib.default_key = priv->default_key;
3771 mib.exclude_unencrypted = priv->exclude_unencrypted;
3772
3773 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3774 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3775
3776 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3777}
3778
3779static void build_wpa_mib(struct atmel_private *priv)
3780{
3781 /* This is for the later (WPA enabled) firmware. */
3782
3783 struct { /* NB this is matched to the hardware, don't change. */
3784 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3785 u8 receiver_address[ETH_ALEN];
3786 u8 wep_is_on;
3787 u8 default_key; /* 0..3 */
3788 u8 group_key;
3789 u8 exclude_unencrypted;
3790 u8 encryption_type;
3791 u8 reserved;
3792
3793 u32 WEPICV_error_count;
3794 u32 WEP_excluded_count;
3795
3796 u8 key_RSC[4][8];
3797 } mib;
3798
3799 int i;
3800
3801 mib.wep_is_on = priv->wep_is_on;
3802 mib.exclude_unencrypted = priv->exclude_unencrypted;
3803 memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3804
3805 /* zero all the keys before adding in valid ones. */
3806 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3807
3808 if (priv->wep_is_on) {
3809 /* There's a comment in the Atmel code to the effect that this
3810 is only valid when still using WEP, it may need to be set to
3811 something to use WPA */
3812 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3813
3814 mib.default_key = mib.group_key = 255;
3815 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3816 if (priv->wep_key_len[i] > 0) {
3817 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3818 if (i == priv->default_key) {
3819 mib.default_key = i;
3820 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3821 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3822 } else {
3823 mib.group_key = i;
3824 priv->group_cipher_suite = priv->pairwise_cipher_suite;
3825 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3826 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3827 }
3828 }
3829 }
3830 if (mib.default_key == 255)
3831 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3832 if (mib.group_key == 255)
3833 mib.group_key = mib.default_key;
3834
3835 }
3836
3837 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3838}
3839
3840static int reset_atmel_card(struct net_device *dev)
3841{
3842 /* do everything necessary to wake up the hardware, including
3843 waiting for the lightning strike and throwing the knife switch....
3844
3845 set all the Mib values which matter in the card to match
3846 their settings in the atmel_private structure. Some of these
3847 can be altered on the fly, but many (WEP, infrastructure or ad-hoc)
3848 can only be changed by tearing down the world and coming back through
3849 here.
3850
3851 This routine is also responsible for initialising some
3852 hardware-specific fields in the atmel_private structure,
3853 including a copy of the firmware's hostinfo structure
3854 which is the route into the rest of the firmware datastructures. */
3855
3856 struct atmel_private *priv = netdev_priv(dev);
3857 u8 configuration;
3858 int old_state = priv->station_state;
3859 int err = 0;
3860
3861 /* data to add to the firmware names, in priority order
3862 this implemenents firmware versioning */
3863
3864 static char *firmware_modifier[] = {
3865 "-wpa",
3866 "",
3867 NULL
3868 };
3869
3870 /* reset pccard */
3871 if (priv->bus_type == BUS_TYPE_PCCARD)
3872 atmel_write16(priv->dev, GCR, 0x0060);
3873
3874 /* stop card , disable interrupts */
3875 atmel_write16(priv->dev, GCR, 0x0040);
3876
3877 if (priv->card_type == CARD_TYPE_EEPROM) {
3878 /* copy in firmware if needed */
3879 const struct firmware *fw_entry = NULL;
3880 const unsigned char *fw;
3881 int len = priv->firmware_length;
3882 if (!(fw = priv->firmware)) {
3883 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3884 if (strlen(priv->firmware_id) == 0) {
3885 printk(KERN_INFO
3886 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3887 dev->name);
3888 printk(KERN_INFO
3889 "%s: if not, use the firmware= module parameter.\n",
3890 dev->name);
3891 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3892 }
3893 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3894 if (err != 0) {
3895 printk(KERN_ALERT
3896 "%s: firmware %s is missing, cannot continue.\n",
3897 dev->name, priv->firmware_id);
3898 return err;
3899 }
3900 } else {
3901 int fw_index = 0;
3902 int success = 0;
3903
3904 /* get firmware filename entry based on firmware type ID */
3905 while (fw_table[fw_index].fw_type != priv->firmware_type
3906 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3907 fw_index++;
3908
3909 /* construct the actual firmware file name */
3910 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3911 int i;
3912 for (i = 0; firmware_modifier[i]; i++) {
3913 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3914 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3915 priv->firmware_id[31] = '\0';
3916 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3917 success = 1;
3918 break;
3919 }
3920 }
3921 }
3922 if (!success) {
3923 printk(KERN_ALERT
3924 "%s: firmware %s is missing, cannot start.\n",
3925 dev->name, priv->firmware_id);
3926 priv->firmware_id[0] = '\0';
3927 return -ENOENT;
3928 }
3929 }
3930
3931 fw = fw_entry->data;
3932 len = fw_entry->size;
3933 }
3934
3935 if (len <= 0x6000) {
3936 atmel_write16(priv->dev, BSR, BSS_IRAM);
3937 atmel_copy_to_card(priv->dev, 0, fw, len);
3938 atmel_set_gcr(priv->dev, GCR_REMAP);
3939 } else {
3940 /* Remap */
3941 atmel_set_gcr(priv->dev, GCR_REMAP);
3942 atmel_write16(priv->dev, BSR, BSS_IRAM);
3943 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3944 atmel_write16(priv->dev, BSR, 0x2ff);
3945 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3946 }
3947
3948 release_firmware(fw_entry);
3949 }
3950
3951 err = atmel_wakeup_firmware(priv);
3952 if (err != 0)
3953 return err;
3954
3955 /* Check the version and set the correct flag for wpa stuff,
3956 old and new firmware is incompatible.
3957 The pre-wpa 3com firmware reports major version 5,
3958 the wpa 3com firmware is major version 4 and doesn't need
3959 the 3com broken-ness filter. */
3960 priv->use_wpa = (priv->host_info.major_version == 4);
3961 priv->radio_on_broken = (priv->host_info.major_version == 5);
3962
3963 /* unmask all irq sources */
3964 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3965
3966 /* int Tx system and enable Tx */
3967 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3968 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3969 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3970 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3971
3972 priv->tx_desc_free = priv->host_info.tx_desc_count;
3973 priv->tx_desc_head = 0;
3974 priv->tx_desc_tail = 0;
3975 priv->tx_desc_previous = 0;
3976 priv->tx_free_mem = priv->host_info.tx_buff_size;
3977 priv->tx_buff_head = 0;
3978 priv->tx_buff_tail = 0;
3979
3980 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3981 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3982 configuration | FUNC_CTRL_TxENABLE);
3983
3984 /* init Rx system and enable */
3985 priv->rx_desc_head = 0;
3986
3987 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
3988 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
3989 configuration | FUNC_CTRL_RxENABLE);
3990
3991 if (!priv->radio_on_broken) {
3992 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
3993 CMD_STATUS_REJECTED_RADIO_OFF) {
3994 printk(KERN_INFO "%s: cannot turn the radio on.\n",
3995 dev->name);
3996 return -EIO;
3997 }
3998 }
3999
4000 /* set up enough MIB values to run. */
4001 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4002 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4003 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4004 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4005 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4006 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4007 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4008 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4009 priv->dev->dev_addr, 6);
4010 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4011 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4012 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4013 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4014 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4015 if (priv->use_wpa)
4016 build_wpa_mib(priv);
4017 else
4018 build_wep_mib(priv);
4019
4020 if (old_state == STATION_STATE_READY) {
4021 union iwreq_data wrqu;
4022
4023 wrqu.data.length = 0;
4024 wrqu.data.flags = 0;
4025 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4026 eth_zero_addr(wrqu.ap_addr.sa_data);
4027 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4028 }
4029
4030 return 0;
4031}
4032
4033static void atmel_send_command(struct atmel_private *priv, int command,
4034 void *cmd, int cmd_size)
4035{
4036 if (cmd)
4037 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4038 cmd, cmd_size);
4039
4040 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4041 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4042}
4043
4044static int atmel_send_command_wait(struct atmel_private *priv, int command,
4045 void *cmd, int cmd_size)
4046{
4047 int i, status;
4048
4049 atmel_send_command(priv, command, cmd, cmd_size);
4050
4051 for (i = 5000; i; i--) {
4052 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4053 if (status != CMD_STATUS_IDLE &&
4054 status != CMD_STATUS_IN_PROGRESS)
4055 break;
4056 udelay(20);
4057 }
4058
4059 if (i == 0) {
4060 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4061 status = CMD_STATUS_HOST_ERROR;
4062 } else {
4063 if (command != CMD_EnableRadio)
4064 status = CMD_STATUS_COMPLETE;
4065 }
4066
4067 return status;
4068}
4069
4070static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4071{
4072 struct get_set_mib m;
4073 m.type = type;
4074 m.size = 1;
4075 m.index = index;
4076
4077 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4078 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4079}
4080
4081static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4082{
4083 struct get_set_mib m;
4084 m.type = type;
4085 m.size = 1;
4086 m.index = index;
4087 m.data[0] = data;
4088
4089 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4090}
4091
4092static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4093 u16 data)
4094{
4095 struct get_set_mib m;
4096 m.type = type;
4097 m.size = 2;
4098 m.index = index;
4099 m.data[0] = data;
4100 m.data[1] = data >> 8;
4101
4102 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4103}
4104
4105static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4106 u8 *data, int data_len)
4107{
4108 struct get_set_mib m;
4109 m.type = type;
4110 m.size = data_len;
4111 m.index = index;
4112
4113 if (data_len > MIB_MAX_DATA_BYTES)
4114 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4115
4116 memcpy(m.data, data, data_len);
4117 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4118}
4119
4120static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4121 u8 *data, int data_len)
4122{
4123 struct get_set_mib m;
4124 m.type = type;
4125 m.size = data_len;
4126 m.index = index;
4127
4128 if (data_len > MIB_MAX_DATA_BYTES)
4129 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4130
4131 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4132 atmel_copy_to_host(priv->dev, data,
4133 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4134}
4135
4136static void atmel_writeAR(struct net_device *dev, u16 data)
4137{
4138 int i;
4139 outw(data, dev->base_addr + AR);
4140 /* Address register appears to need some convincing..... */
4141 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4142 outw(data, dev->base_addr + AR);
4143}
4144
4145static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4146 const unsigned char *src, u16 len)
4147{
4148 int i;
4149 atmel_writeAR(dev, dest);
4150 if (dest % 2) {
4151 atmel_write8(dev, DR, *src);
4152 src++; len--;
4153 }
4154 for (i = len; i > 1 ; i -= 2) {
4155 u8 lb = *src++;
4156 u8 hb = *src++;
4157 atmel_write16(dev, DR, lb | (hb << 8));
4158 }
4159 if (i)
4160 atmel_write8(dev, DR, *src);
4161}
4162
4163static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4164 u16 src, u16 len)
4165{
4166 int i;
4167 atmel_writeAR(dev, src);
4168 if (src % 2) {
4169 *dest = atmel_read8(dev, DR);
4170 dest++; len--;
4171 }
4172 for (i = len; i > 1 ; i -= 2) {
4173 u16 hw = atmel_read16(dev, DR);
4174 *dest++ = hw;
4175 *dest++ = hw >> 8;
4176 }
4177 if (i)
4178 *dest = atmel_read8(dev, DR);
4179}
4180
4181static void atmel_set_gcr(struct net_device *dev, u16 mask)
4182{
4183 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4184}
4185
4186static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4187{
4188 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4189}
4190
4191static int atmel_lock_mac(struct atmel_private *priv)
4192{
4193 int i, j = 20;
4194 retry:
4195 for (i = 5000; i; i--) {
4196 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4197 break;
4198 udelay(20);
4199 }
4200
4201 if (!i)
4202 return 0; /* timed out */
4203
4204 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4205 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4206 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4207 if (!j--)
4208 return 0; /* timed out */
4209 goto retry;
4210 }
4211
4212 return 1;
4213}
4214
4215static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4216{
4217 atmel_writeAR(priv->dev, pos);
4218 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4219 atmel_write16(priv->dev, DR, data >> 16);
4220}
4221
4222/***************************************************************************/
4223/* There follows the source form of the MAC address reading firmware */
4224/***************************************************************************/
4225#if 0
4226
4227/* Copyright 2003 Matthew T. Russotto */
4228/* But derived from the Atmel 76C502 firmware written by Atmel and */
4229/* included in "atmel wireless lan drivers" package */
4230/*
4231 This file is part of net.russotto.AtmelMACFW, hereto referred to
4232 as AtmelMACFW
4233
4234 AtmelMACFW is free software; you can redistribute it and/or modify
4235 it under the terms of the GNU General Public License version 2
4236 as published by the Free Software Foundation.
4237
4238 AtmelMACFW is distributed in the hope that it will be useful,
4239 but WITHOUT ANY WARRANTY; without even the implied warranty of
4240 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4241 GNU General Public License for more details.
4242
4243 You should have received a copy of the GNU General Public License
4244 along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4245
4246****************************************************************************/
4247/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4248/* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4249/* It only works on SPI EEPROM versions of the card. */
4250
4251/* This firmware initializes the SPI controller and clock, reads the MAC */
4252/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4253/* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4254/* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4255/* MR4, for investigational purposes (maybe we can determine chip type */
4256/* from that?) */
4257
4258 .org 0
4259 .set MRBASE, 0x8000000
4260 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4261 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4262 .set SRAM_BASE, 0x02000000
4263 .set SP_BASE, 0x0F300000
4264 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4265 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4266 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4267 .set STACK_BASE, 0x5600
4268 .set SP_SR, 0x10
4269 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4270 .set SP_RDRF, 1 /* status register bit -- RDR full */
4271 .set SP_SWRST, 0x80
4272 .set SP_SPIEN, 0x1
4273 .set SP_CR, 0 /* control register */
4274 .set SP_MR, 4 /* mode register */
4275 .set SP_RDR, 0x08 /* Read Data Register */
4276 .set SP_TDR, 0x0C /* Transmit Data Register */
4277 .set SP_CSR0, 0x30 /* chip select registers */
4278 .set SP_CSR1, 0x34
4279 .set SP_CSR2, 0x38
4280 .set SP_CSR3, 0x3C
4281 .set NVRAM_CMD_RDSR, 5 /* read status register */
4282 .set NVRAM_CMD_READ, 3 /* read data */
4283 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4284 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4285 serial output, since SO is normally high. But it
4286 does cause 8 clock cycles and thus 8 bits to be
4287 clocked in to the chip. See Atmel's SPI
4288 controller (e.g. AT91M55800) timing and 4K
4289 SPI EEPROM manuals */
4290
4291 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4292 .set NVRAM_IMAGE, 0x02000200
4293 .set NVRAM_LENGTH, 0x0200
4294 .set MAC_ADDRESS_MIB, SRAM_BASE
4295 .set MAC_ADDRESS_LENGTH, 6
4296 .set MAC_BOOT_FLAG, 0x10
4297 .set MR1, 0
4298 .set MR2, 4
4299 .set MR3, 8
4300 .set MR4, 0xC
4301RESET_VECTOR:
4302 b RESET_HANDLER
4303UNDEF_VECTOR:
4304 b HALT1
4305SWI_VECTOR:
4306 b HALT1
4307IABORT_VECTOR:
4308 b HALT1
4309DABORT_VECTOR:
4310RESERVED_VECTOR:
4311 b HALT1
4312IRQ_VECTOR:
4313 b HALT1
4314FIQ_VECTOR:
4315 b HALT1
4316HALT1: b HALT1
4317RESET_HANDLER:
4318 mov r0, #CPSR_INITIAL
4319 msr CPSR_c, r0 /* This is probably unnecessary */
4320
4321/* I'm guessing this is initializing clock generator electronics for SPI */
4322 ldr r0, =SPI_CGEN_BASE
4323 mov r1, #0
4324 mov r1, r1, lsl #3
4325 orr r1, r1, #0
4326 str r1, [r0]
4327 ldr r1, [r0, #28]
4328 bic r1, r1, #16
4329 str r1, [r0, #28]
4330 mov r1, #1
4331 str r1, [r0, #8]
4332
4333 ldr r0, =MRBASE
4334 mov r1, #0
4335 strh r1, [r0, #MR1]
4336 strh r1, [r0, #MR2]
4337 strh r1, [r0, #MR3]
4338 strh r1, [r0, #MR4]
4339
4340 mov sp, #STACK_BASE
4341 bl SP_INIT
4342 mov r0, #10
4343 bl DELAY9
4344 bl GET_MAC_ADDR
4345 bl GET_WHOLE_NVRAM
4346 ldr r0, =MRBASE
4347 ldr r1, =MAC_ADDRESS_MIB
4348 strh r1, [r0, #MR2]
4349 ldr r1, =NVRAM_IMAGE
4350 strh r1, [r0, #MR4]
4351 mov r1, #MAC_BOOT_FLAG
4352 strh r1, [r0, #MR3]
4353HALT2: b HALT2
4354.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4355GET_WHOLE_NVRAM:
4356 stmdb sp!, {lr}
4357 mov r2, #0 /* 0th bytes of NVRAM */
4358 mov r3, #NVRAM_LENGTH
4359 mov r1, #0 /* not used in routine */
4360 ldr r0, =NVRAM_IMAGE
4361 bl NVRAM_XFER
4362 ldmia sp!, {lr}
4363 bx lr
4364.endfunc
4365
4366.func Get_MAC_Addr, GET_MAC_ADDR
4367GET_MAC_ADDR:
4368 stmdb sp!, {lr}
4369 mov r2, #0x120 /* address of MAC Address within NVRAM */
4370 mov r3, #MAC_ADDRESS_LENGTH
4371 mov r1, #0 /* not used in routine */
4372 ldr r0, =MAC_ADDRESS_MIB
4373 bl NVRAM_XFER
4374 ldmia sp!, {lr}
4375 bx lr
4376.endfunc
4377.ltorg
4378.func Delay9, DELAY9
4379DELAY9:
4380 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
4381DELAYLOOP:
4382 beq DELAY9_done
4383 subs r0, r0, #1
4384 b DELAYLOOP
4385DELAY9_done:
4386 bx lr
4387.endfunc
4388
4389.func SP_Init, SP_INIT
4390SP_INIT:
4391 mov r1, #SP_SWRST
4392 ldr r0, =SP_BASE
4393 str r1, [r0, #SP_CR] /* reset the SPI */
4394 mov r1, #0
4395 str r1, [r0, #SP_CR] /* release SPI from reset state */
4396 mov r1, #SP_SPIEN
4397 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4398 str r1, [r0, #SP_CR] /* enable the SPI */
4399
4400/* My guess would be this turns on the SPI clock */
4401 ldr r3, =SPI_CGEN_BASE
4402 ldr r1, [r3, #28]
4403 orr r1, r1, #0x2000
4404 str r1, [r3, #28]
4405
4406 ldr r1, =0x2000c01
4407 str r1, [r0, #SP_CSR0]
4408 ldr r1, =0x2000201
4409 str r1, [r0, #SP_CSR1]
4410 str r1, [r0, #SP_CSR2]
4411 str r1, [r0, #SP_CSR3]
4412 ldr r1, [r0, #SP_SR]
4413 ldr r0, [r0, #SP_RDR]
4414 bx lr
4415.endfunc
4416.func NVRAM_Init, NVRAM_INIT
4417NVRAM_INIT:
4418 ldr r1, =SP_BASE
4419 ldr r0, [r1, #SP_RDR]
4420 mov r0, #NVRAM_CMD_RDSR
4421 str r0, [r1, #SP_TDR]
4422SP_loop1:
4423 ldr r0, [r1, #SP_SR]
4424 tst r0, #SP_TDRE
4425 beq SP_loop1
4426
4427 mov r0, #SPI_8CLOCKS
4428 str r0, [r1, #SP_TDR]
4429SP_loop2:
4430 ldr r0, [r1, #SP_SR]
4431 tst r0, #SP_TDRE
4432 beq SP_loop2
4433
4434 ldr r0, [r1, #SP_RDR]
4435SP_loop3:
4436 ldr r0, [r1, #SP_SR]
4437 tst r0, #SP_RDRF
4438 beq SP_loop3
4439
4440 ldr r0, [r1, #SP_RDR]
4441 and r0, r0, #255
4442 bx lr
4443.endfunc
4444
4445.func NVRAM_Xfer, NVRAM_XFER
4446 /* r0 = dest address */
4447 /* r1 = not used */
4448 /* r2 = src address within NVRAM */
4449 /* r3 = length */
4450NVRAM_XFER:
4451 stmdb sp!, {r4, r5, lr}
4452 mov r5, r0 /* save r0 (dest address) */
4453 mov r4, r3 /* save r3 (length) */
4454 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4455 and r0, r0, #8
4456 add r0, r0, #NVRAM_CMD_READ
4457 ldr r1, =NVRAM_SCRATCH
4458 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4459 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
4460_local1:
4461 bl NVRAM_INIT
4462 tst r0, #NVRAM_SR_RDY
4463 bne _local1
4464 mov r0, #20
4465 bl DELAY9
4466 mov r2, r4 /* length */
4467 mov r1, r5 /* dest address */
4468 mov r0, #2 /* bytes to transfer in command */
4469 bl NVRAM_XFER2
4470 ldmia sp!, {r4, r5, lr}
4471 bx lr
4472.endfunc
4473
4474.func NVRAM_Xfer2, NVRAM_XFER2
4475NVRAM_XFER2:
4476 stmdb sp!, {r4, r5, r6, lr}
4477 ldr r4, =SP_BASE
4478 mov r3, #0
4479 cmp r0, #0
4480 bls _local2
4481 ldr r5, =NVRAM_SCRATCH
4482_local4:
4483 ldrb r6, [r5, r3]
4484 str r6, [r4, #SP_TDR]
4485_local3:
4486 ldr r6, [r4, #SP_SR]
4487 tst r6, #SP_TDRE
4488 beq _local3
4489 add r3, r3, #1
4490 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4491 blo _local4
4492_local2:
4493 mov r3, #SPI_8CLOCKS
4494 str r3, [r4, #SP_TDR]
4495 ldr r0, [r4, #SP_RDR]
4496_local5:
4497 ldr r0, [r4, #SP_SR]
4498 tst r0, #SP_RDRF
4499 beq _local5
4500 ldr r0, [r4, #SP_RDR] /* what's this byte? It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
4501 mov r0, #0
4502 cmp r2, #0 /* r2 is # of bytes to copy in */
4503 bls _local6
4504_local7:
4505 ldr r5, [r4, #SP_SR]
4506 tst r5, #SP_TDRE
4507 beq _local7
4508 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
4509_local8:
4510 ldr r5, [r4, #SP_SR]
4511 tst r5, #SP_RDRF
4512 beq _local8
4513 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4514 strb r5, [r1], #1 /* postindexed */
4515 add r0, r0, #1
4516 cmp r0, r2
4517 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4518_local6:
4519 mov r0, #200
4520 bl DELAY9
4521 ldmia sp!, {r4, r5, r6, lr}
4522 bx lr
4523#endif
1/*** -*- linux-c -*- **********************************************************
2
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003-2004 Simon Kelley.
7
8 This code was developed from version 2.1.1 of the Atmel drivers,
9 released by Atmel corp. under the GPL in December 2002. It also
10 includes code from the Linux aironet drivers (C) Benjamin Reed,
11 and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
12 extensions, (C) Jean Tourrilhes.
13
14 The firmware module for reading the MAC address of the card comes from
15 net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
16 by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
17 This file contains the module in binary form and, under the terms
18 of the GPL, in source form. The source is located at the end of the file.
19
20 This program is free software; you can redistribute it and/or modify
21 it under the terms of the GNU General Public License as published by
22 the Free Software Foundation; either version 2 of the License, or
23 (at your option) any later version.
24
25 This software is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
29
30 You should have received a copy of the GNU General Public License
31 along with Atmel wireless lan drivers; if not, see
32 <http://www.gnu.org/licenses/>.
33
34 For all queries about this code, please contact the current author,
35 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
36
37 Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
38 hardware used during development of this driver.
39
40******************************************************************************/
41
42#include <linux/interrupt.h>
43
44#include <linux/kernel.h>
45#include <linux/ptrace.h>
46#include <linux/slab.h>
47#include <linux/string.h>
48#include <linux/timer.h>
49#include <asm/byteorder.h>
50#include <asm/io.h>
51#include <linux/uaccess.h>
52#include <linux/module.h>
53#include <linux/netdevice.h>
54#include <linux/etherdevice.h>
55#include <linux/skbuff.h>
56#include <linux/if_arp.h>
57#include <linux/ioport.h>
58#include <linux/fcntl.h>
59#include <linux/delay.h>
60#include <linux/wireless.h>
61#include <net/iw_handler.h>
62#include <linux/crc32.h>
63#include <linux/proc_fs.h>
64#include <linux/seq_file.h>
65#include <linux/device.h>
66#include <linux/moduleparam.h>
67#include <linux/firmware.h>
68#include <linux/jiffies.h>
69#include <net/cfg80211.h>
70#include "atmel.h"
71
72#define DRIVER_MAJOR 0
73#define DRIVER_MINOR 98
74
75MODULE_AUTHOR("Simon Kelley");
76MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
77MODULE_LICENSE("GPL");
78MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
79
80/* The name of the firmware file to be loaded
81 over-rides any automatic selection */
82static char *firmware = NULL;
83module_param(firmware, charp, 0);
84
85/* table of firmware file names */
86static struct {
87 AtmelFWType fw_type;
88 const char *fw_file;
89 const char *fw_file_ext;
90} fw_table[] = {
91 { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
92 { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
93 { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
94 { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
95 { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
96 { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
97 { ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" },
98 { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
99 { ATMEL_FW_TYPE_NONE, NULL, NULL }
100};
101MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
102MODULE_FIRMWARE("atmel_at76c502.bin");
103MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
104MODULE_FIRMWARE("atmel_at76c502d.bin");
105MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
106MODULE_FIRMWARE("atmel_at76c502e.bin");
107MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
108MODULE_FIRMWARE("atmel_at76c502_3com.bin");
109MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
110MODULE_FIRMWARE("atmel_at76c504.bin");
111MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
112MODULE_FIRMWARE("atmel_at76c504_2958.bin");
113MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
114MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
115MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
116MODULE_FIRMWARE("atmel_at76c506.bin");
117
118#define MAX_SSID_LENGTH 32
119#define MGMT_JIFFIES (256 * HZ / 100)
120
121#define MAX_BSS_ENTRIES 64
122
123/* registers */
124#define GCR 0x00 /* (SIR0) General Configuration Register */
125#define BSR 0x02 /* (SIR1) Bank Switching Select Register */
126#define AR 0x04
127#define DR 0x08
128#define MR1 0x12 /* Mirror Register 1 */
129#define MR2 0x14 /* Mirror Register 2 */
130#define MR3 0x16 /* Mirror Register 3 */
131#define MR4 0x18 /* Mirror Register 4 */
132
133#define GPR1 0x0c
134#define GPR2 0x0e
135#define GPR3 0x10
136/*
137 * Constants for the GCR register.
138 */
139#define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */
140#define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */
141#define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */
142#define GCR_ENINT 0x0002 /* Enable Interrupts */
143#define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */
144
145#define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */
146#define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */
147/*
148 *Constants for the MR registers.
149 */
150#define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */
151#define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */
152#define MAC_INIT_OK 0x0002 /* MAC boot has been completed */
153
154#define MIB_MAX_DATA_BYTES 212
155#define MIB_HEADER_SIZE 4 /* first four fields */
156
157struct get_set_mib {
158 u8 type;
159 u8 size;
160 u8 index;
161 u8 reserved;
162 u8 data[MIB_MAX_DATA_BYTES];
163};
164
165struct rx_desc {
166 u32 Next;
167 u16 MsduPos;
168 u16 MsduSize;
169
170 u8 State;
171 u8 Status;
172 u8 Rate;
173 u8 Rssi;
174 u8 LinkQuality;
175 u8 PreambleType;
176 u16 Duration;
177 u32 RxTime;
178};
179
180#define RX_DESC_FLAG_VALID 0x80
181#define RX_DESC_FLAG_CONSUMED 0x40
182#define RX_DESC_FLAG_IDLE 0x00
183
184#define RX_STATUS_SUCCESS 0x00
185
186#define RX_DESC_MSDU_POS_OFFSET 4
187#define RX_DESC_MSDU_SIZE_OFFSET 6
188#define RX_DESC_FLAGS_OFFSET 8
189#define RX_DESC_STATUS_OFFSET 9
190#define RX_DESC_RSSI_OFFSET 11
191#define RX_DESC_LINK_QUALITY_OFFSET 12
192#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
193#define RX_DESC_DURATION_OFFSET 14
194#define RX_DESC_RX_TIME_OFFSET 16
195
196struct tx_desc {
197 u32 NextDescriptor;
198 u16 TxStartOfFrame;
199 u16 TxLength;
200
201 u8 TxState;
202 u8 TxStatus;
203 u8 RetryCount;
204
205 u8 TxRate;
206
207 u8 KeyIndex;
208 u8 ChiperType;
209 u8 ChipreLength;
210 u8 Reserved1;
211
212 u8 Reserved;
213 u8 PacketType;
214 u16 HostTxLength;
215};
216
217#define TX_DESC_NEXT_OFFSET 0
218#define TX_DESC_POS_OFFSET 4
219#define TX_DESC_SIZE_OFFSET 6
220#define TX_DESC_FLAGS_OFFSET 8
221#define TX_DESC_STATUS_OFFSET 9
222#define TX_DESC_RETRY_OFFSET 10
223#define TX_DESC_RATE_OFFSET 11
224#define TX_DESC_KEY_INDEX_OFFSET 12
225#define TX_DESC_CIPHER_TYPE_OFFSET 13
226#define TX_DESC_CIPHER_LENGTH_OFFSET 14
227#define TX_DESC_PACKET_TYPE_OFFSET 17
228#define TX_DESC_HOST_LENGTH_OFFSET 18
229
230/*
231 * Host-MAC interface
232 */
233
234#define TX_STATUS_SUCCESS 0x00
235
236#define TX_FIRM_OWN 0x80
237#define TX_DONE 0x40
238
239#define TX_ERROR 0x01
240
241#define TX_PACKET_TYPE_DATA 0x01
242#define TX_PACKET_TYPE_MGMT 0x02
243
244#define ISR_EMPTY 0x00 /* no bits set in ISR */
245#define ISR_TxCOMPLETE 0x01 /* packet transmitted */
246#define ISR_RxCOMPLETE 0x02 /* packet received */
247#define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */
248#define ISR_FATAL_ERROR 0x08 /* Fatal error */
249#define ISR_COMMAND_COMPLETE 0x10 /* command completed */
250#define ISR_OUT_OF_RANGE 0x20 /* command completed */
251#define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */
252#define ISR_GENERIC_IRQ 0x80
253
254#define Local_Mib_Type 0x01
255#define Mac_Address_Mib_Type 0x02
256#define Mac_Mib_Type 0x03
257#define Statistics_Mib_Type 0x04
258#define Mac_Mgmt_Mib_Type 0x05
259#define Mac_Wep_Mib_Type 0x06
260#define Phy_Mib_Type 0x07
261#define Multi_Domain_MIB 0x08
262
263#define MAC_MGMT_MIB_CUR_BSSID_POS 14
264#define MAC_MIB_FRAG_THRESHOLD_POS 8
265#define MAC_MIB_RTS_THRESHOLD_POS 10
266#define MAC_MIB_SHORT_RETRY_POS 16
267#define MAC_MIB_LONG_RETRY_POS 17
268#define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
269#define MAC_MGMT_MIB_BEACON_PER_POS 0
270#define MAC_MGMT_MIB_STATION_ID_POS 6
271#define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
272#define MAC_MGMT_MIB_CUR_BSSID_POS 14
273#define MAC_MGMT_MIB_PS_MODE_POS 53
274#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
275#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
276#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
277#define PHY_MIB_CHANNEL_POS 14
278#define PHY_MIB_RATE_SET_POS 20
279#define PHY_MIB_REG_DOMAIN_POS 26
280#define LOCAL_MIB_AUTO_TX_RATE_POS 3
281#define LOCAL_MIB_SSID_SIZE 5
282#define LOCAL_MIB_TX_PROMISCUOUS_POS 6
283#define LOCAL_MIB_TX_MGMT_RATE_POS 7
284#define LOCAL_MIB_TX_CONTROL_RATE_POS 8
285#define LOCAL_MIB_PREAMBLE_TYPE 9
286#define MAC_ADDR_MIB_MAC_ADDR_POS 0
287
288#define CMD_Set_MIB_Vars 0x01
289#define CMD_Get_MIB_Vars 0x02
290#define CMD_Scan 0x03
291#define CMD_Join 0x04
292#define CMD_Start 0x05
293#define CMD_EnableRadio 0x06
294#define CMD_DisableRadio 0x07
295#define CMD_SiteSurvey 0x0B
296
297#define CMD_STATUS_IDLE 0x00
298#define CMD_STATUS_COMPLETE 0x01
299#define CMD_STATUS_UNKNOWN 0x02
300#define CMD_STATUS_INVALID_PARAMETER 0x03
301#define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
302#define CMD_STATUS_TIME_OUT 0x07
303#define CMD_STATUS_IN_PROGRESS 0x08
304#define CMD_STATUS_REJECTED_RADIO_OFF 0x09
305#define CMD_STATUS_HOST_ERROR 0xFF
306#define CMD_STATUS_BUSY 0xFE
307
308#define CMD_BLOCK_COMMAND_OFFSET 0
309#define CMD_BLOCK_STATUS_OFFSET 1
310#define CMD_BLOCK_PARAMETERS_OFFSET 4
311
312#define SCAN_OPTIONS_SITE_SURVEY 0x80
313
314#define MGMT_FRAME_BODY_OFFSET 24
315#define MAX_AUTHENTICATION_RETRIES 3
316#define MAX_ASSOCIATION_RETRIES 3
317
318#define AUTHENTICATION_RESPONSE_TIME_OUT 1000
319
320#define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
321#define LOOP_RETRY_LIMIT 500000
322
323#define ACTIVE_MODE 1
324#define PS_MODE 2
325
326#define MAX_ENCRYPTION_KEYS 4
327#define MAX_ENCRYPTION_KEY_SIZE 40
328
329/*
330 * 802.11 related definitions
331 */
332
333/*
334 * Regulatory Domains
335 */
336
337#define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */
338#define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */
339#define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */
340#define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */
341#define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */
342#define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */
343#define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */
344#define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */
345
346#define BSS_TYPE_AD_HOC 1
347#define BSS_TYPE_INFRASTRUCTURE 2
348
349#define SCAN_TYPE_ACTIVE 0
350#define SCAN_TYPE_PASSIVE 1
351
352#define LONG_PREAMBLE 0
353#define SHORT_PREAMBLE 1
354#define AUTO_PREAMBLE 2
355
356#define DATA_FRAME_WS_HEADER_SIZE 30
357
358/* promiscuous mode control */
359#define PROM_MODE_OFF 0x0
360#define PROM_MODE_UNKNOWN 0x1
361#define PROM_MODE_CRC_FAILED 0x2
362#define PROM_MODE_DUPLICATED 0x4
363#define PROM_MODE_MGMT 0x8
364#define PROM_MODE_CTRL 0x10
365#define PROM_MODE_BAD_PROTOCOL 0x20
366
367#define IFACE_INT_STATUS_OFFSET 0
368#define IFACE_INT_MASK_OFFSET 1
369#define IFACE_LOCKOUT_HOST_OFFSET 2
370#define IFACE_LOCKOUT_MAC_OFFSET 3
371#define IFACE_FUNC_CTRL_OFFSET 28
372#define IFACE_MAC_STAT_OFFSET 30
373#define IFACE_GENERIC_INT_TYPE_OFFSET 32
374
375#define CIPHER_SUITE_NONE 0
376#define CIPHER_SUITE_WEP_64 1
377#define CIPHER_SUITE_TKIP 2
378#define CIPHER_SUITE_AES 3
379#define CIPHER_SUITE_CCX 4
380#define CIPHER_SUITE_WEP_128 5
381
382/*
383 * IFACE MACROS & definitions
384 */
385
386/*
387 * FuncCtrl field:
388 */
389#define FUNC_CTRL_TxENABLE 0x10
390#define FUNC_CTRL_RxENABLE 0x20
391#define FUNC_CTRL_INIT_COMPLETE 0x01
392
393/* A stub firmware image which reads the MAC address from NVRAM on the card.
394 For copyright information and source see the end of this file. */
395static u8 mac_reader[] = {
396 0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
397 0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
398 0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
399 0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
400 0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
401 0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
402 0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
403 0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
404 0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
405 0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
406 0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
407 0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
408 0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
409 0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
410 0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
411 0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
412 0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
413 0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
414 0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
415 0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
416 0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
417 0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
418 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
419 0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
420 0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
421 0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
422 0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
423 0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
424 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
425 0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
426 0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
427 0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
428 0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
429 0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
430 0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
431 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
432 0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
433 0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
434 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
435 0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
436 0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
437 0x00, 0x01, 0x00, 0x02
438};
439
440struct atmel_private {
441 void *card; /* Bus dependent structure varies for PCcard */
442 int (*present_callback)(void *); /* And callback which uses it */
443 char firmware_id[32];
444 AtmelFWType firmware_type;
445 u8 *firmware;
446 int firmware_length;
447 struct timer_list management_timer;
448 struct net_device *dev;
449 struct device *sys_dev;
450 struct iw_statistics wstats;
451 spinlock_t irqlock, timerlock; /* spinlocks */
452 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
453 enum {
454 CARD_TYPE_PARALLEL_FLASH,
455 CARD_TYPE_SPI_FLASH,
456 CARD_TYPE_EEPROM
457 } card_type;
458 int do_rx_crc; /* If we need to CRC incoming packets */
459 int probe_crc; /* set if we don't yet know */
460 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
461 u16 rx_desc_head;
462 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
463 u16 tx_free_mem, tx_buff_head, tx_buff_tail;
464
465 u16 frag_seq, frag_len, frag_no;
466 u8 frag_source[6];
467
468 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
469 u8 group_cipher_suite, pairwise_cipher_suite;
470 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
471 int wep_key_len[MAX_ENCRYPTION_KEYS];
472 int use_wpa, radio_on_broken; /* firmware dependent stuff. */
473
474 u16 host_info_base;
475 struct host_info_struct {
476 /* NB this is matched to the hardware, don't change. */
477 u8 volatile int_status;
478 u8 volatile int_mask;
479 u8 volatile lockout_host;
480 u8 volatile lockout_mac;
481
482 u16 tx_buff_pos;
483 u16 tx_buff_size;
484 u16 tx_desc_pos;
485 u16 tx_desc_count;
486
487 u16 rx_buff_pos;
488 u16 rx_buff_size;
489 u16 rx_desc_pos;
490 u16 rx_desc_count;
491
492 u16 build_version;
493 u16 command_pos;
494
495 u16 major_version;
496 u16 minor_version;
497
498 u16 func_ctrl;
499 u16 mac_status;
500 u16 generic_IRQ_type;
501 u8 reserved[2];
502 } host_info;
503
504 enum {
505 STATION_STATE_SCANNING,
506 STATION_STATE_JOINNING,
507 STATION_STATE_AUTHENTICATING,
508 STATION_STATE_ASSOCIATING,
509 STATION_STATE_READY,
510 STATION_STATE_REASSOCIATING,
511 STATION_STATE_DOWN,
512 STATION_STATE_MGMT_ERROR
513 } station_state;
514
515 int operating_mode, power_mode;
516 time_t last_qual;
517 int beacons_this_sec;
518 int channel;
519 int reg_domain, config_reg_domain;
520 int tx_rate;
521 int auto_tx_rate;
522 int rts_threshold;
523 int frag_threshold;
524 int long_retry, short_retry;
525 int preamble;
526 int default_beacon_period, beacon_period, listen_interval;
527 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
528 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
529 enum {
530 SITE_SURVEY_IDLE,
531 SITE_SURVEY_IN_PROGRESS,
532 SITE_SURVEY_COMPLETED
533 } site_survey_state;
534 unsigned long last_survey;
535
536 int station_was_associated, station_is_associated;
537 int fast_scan;
538
539 struct bss_info {
540 int channel;
541 int SSIDsize;
542 int RSSI;
543 int UsingWEP;
544 int preamble;
545 int beacon_period;
546 int BSStype;
547 u8 BSSID[6];
548 u8 SSID[MAX_SSID_LENGTH];
549 } BSSinfo[MAX_BSS_ENTRIES];
550 int BSS_list_entries, current_BSS;
551 int connect_to_any_BSS;
552 int SSID_size, new_SSID_size;
553 u8 CurrentBSSID[6], BSSID[6];
554 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
555 u64 last_beacon_timestamp;
556 u8 rx_buf[MAX_WIRELESS_BODY];
557};
558
559static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
560
561static const struct {
562 int reg_domain;
563 int min, max;
564 char *name;
565} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
566 { REG_DOMAIN_DOC, 1, 11, "Canada" },
567 { REG_DOMAIN_ETSI, 1, 13, "Europe" },
568 { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
569 { REG_DOMAIN_FRANCE, 10, 13, "France" },
570 { REG_DOMAIN_MKK, 14, 14, "MKK" },
571 { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
572 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
573
574static void build_wpa_mib(struct atmel_private *priv);
575static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
576static void atmel_copy_to_card(struct net_device *dev, u16 dest,
577 const unsigned char *src, u16 len);
578static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
579 u16 src, u16 len);
580static void atmel_set_gcr(struct net_device *dev, u16 mask);
581static void atmel_clear_gcr(struct net_device *dev, u16 mask);
582static int atmel_lock_mac(struct atmel_private *priv);
583static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
584static void atmel_command_irq(struct atmel_private *priv);
585static int atmel_validate_channel(struct atmel_private *priv, int channel);
586static void atmel_management_frame(struct atmel_private *priv,
587 struct ieee80211_hdr *header,
588 u16 frame_len, u8 rssi);
589static void atmel_management_timer(u_long a);
590static void atmel_send_command(struct atmel_private *priv, int command,
591 void *cmd, int cmd_size);
592static int atmel_send_command_wait(struct atmel_private *priv, int command,
593 void *cmd, int cmd_size);
594static void atmel_transmit_management_frame(struct atmel_private *priv,
595 struct ieee80211_hdr *header,
596 u8 *body, int body_len);
597
598static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
599static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
600 u8 data);
601static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
602 u16 data);
603static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
604 u8 *data, int data_len);
605static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
606 u8 *data, int data_len);
607static void atmel_scan(struct atmel_private *priv, int specific_ssid);
608static void atmel_join_bss(struct atmel_private *priv, int bss_index);
609static void atmel_smooth_qual(struct atmel_private *priv);
610static void atmel_writeAR(struct net_device *dev, u16 data);
611static int probe_atmel_card(struct net_device *dev);
612static int reset_atmel_card(struct net_device *dev);
613static void atmel_enter_state(struct atmel_private *priv, int new_state);
614int atmel_open (struct net_device *dev);
615
616static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
617{
618 return priv->host_info_base + offset;
619}
620
621static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
622{
623 return priv->host_info.command_pos + offset;
624}
625
626static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
627{
628 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
629}
630
631static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
632{
633 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
634}
635
636static inline u8 atmel_read8(struct net_device *dev, u16 offset)
637{
638 return inb(dev->base_addr + offset);
639}
640
641static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
642{
643 outb(data, dev->base_addr + offset);
644}
645
646static inline u16 atmel_read16(struct net_device *dev, u16 offset)
647{
648 return inw(dev->base_addr + offset);
649}
650
651static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
652{
653 outw(data, dev->base_addr + offset);
654}
655
656static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
657{
658 atmel_writeAR(priv->dev, pos);
659 return atmel_read8(priv->dev, DR);
660}
661
662static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
663{
664 atmel_writeAR(priv->dev, pos);
665 atmel_write8(priv->dev, DR, data);
666}
667
668static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
669{
670 atmel_writeAR(priv->dev, pos);
671 return atmel_read16(priv->dev, DR);
672}
673
674static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
675{
676 atmel_writeAR(priv->dev, pos);
677 atmel_write16(priv->dev, DR, data);
678}
679
680static const struct iw_handler_def atmel_handler_def;
681
682static void tx_done_irq(struct atmel_private *priv)
683{
684 int i;
685
686 for (i = 0;
687 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
688 i < priv->host_info.tx_desc_count;
689 i++) {
690 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
691 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
692 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
693
694 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
695
696 priv->tx_free_mem += msdu_size;
697 priv->tx_desc_free++;
698
699 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
700 priv->tx_buff_head = 0;
701 else
702 priv->tx_buff_head += msdu_size;
703
704 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
705 priv->tx_desc_head++ ;
706 else
707 priv->tx_desc_head = 0;
708
709 if (type == TX_PACKET_TYPE_DATA) {
710 if (status == TX_STATUS_SUCCESS)
711 priv->dev->stats.tx_packets++;
712 else
713 priv->dev->stats.tx_errors++;
714 netif_wake_queue(priv->dev);
715 }
716 }
717}
718
719static u16 find_tx_buff(struct atmel_private *priv, u16 len)
720{
721 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
722
723 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
724 return 0;
725
726 if (bottom_free >= len)
727 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
728
729 if (priv->tx_free_mem - bottom_free >= len) {
730 priv->tx_buff_tail = 0;
731 return priv->host_info.tx_buff_pos;
732 }
733
734 return 0;
735}
736
737static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
738 u16 len, u16 buff, u8 type)
739{
740 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
741 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
742 if (!priv->use_wpa)
743 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
744 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
745 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
746 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
747 if (priv->use_wpa) {
748 int cipher_type, cipher_length;
749 if (is_bcast) {
750 cipher_type = priv->group_cipher_suite;
751 if (cipher_type == CIPHER_SUITE_WEP_64 ||
752 cipher_type == CIPHER_SUITE_WEP_128)
753 cipher_length = 8;
754 else if (cipher_type == CIPHER_SUITE_TKIP)
755 cipher_length = 12;
756 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
757 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
758 cipher_type = priv->pairwise_cipher_suite;
759 cipher_length = 8;
760 } else {
761 cipher_type = CIPHER_SUITE_NONE;
762 cipher_length = 0;
763 }
764 } else {
765 cipher_type = priv->pairwise_cipher_suite;
766 if (cipher_type == CIPHER_SUITE_WEP_64 ||
767 cipher_type == CIPHER_SUITE_WEP_128)
768 cipher_length = 8;
769 else if (cipher_type == CIPHER_SUITE_TKIP)
770 cipher_length = 12;
771 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
772 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
773 cipher_type = priv->group_cipher_suite;
774 cipher_length = 8;
775 } else {
776 cipher_type = CIPHER_SUITE_NONE;
777 cipher_length = 0;
778 }
779 }
780
781 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
782 cipher_type);
783 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
784 cipher_length);
785 }
786 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
787 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
788 if (priv->tx_desc_previous != priv->tx_desc_tail)
789 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
790 priv->tx_desc_previous = priv->tx_desc_tail;
791 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
792 priv->tx_desc_tail++;
793 else
794 priv->tx_desc_tail = 0;
795 priv->tx_desc_free--;
796 priv->tx_free_mem -= len;
797}
798
799static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
800{
801 static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
802 struct atmel_private *priv = netdev_priv(dev);
803 struct ieee80211_hdr header;
804 unsigned long flags;
805 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
806
807 if (priv->card && priv->present_callback &&
808 !(*priv->present_callback)(priv->card)) {
809 dev->stats.tx_errors++;
810 dev_kfree_skb(skb);
811 return NETDEV_TX_OK;
812 }
813
814 if (priv->station_state != STATION_STATE_READY) {
815 dev->stats.tx_errors++;
816 dev_kfree_skb(skb);
817 return NETDEV_TX_OK;
818 }
819
820 /* first ensure the timer func cannot run */
821 spin_lock_bh(&priv->timerlock);
822 /* then stop the hardware ISR */
823 spin_lock_irqsave(&priv->irqlock, flags);
824 /* nb doing the above in the opposite order will deadlock */
825
826 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
827 12 first bytes (containing DA/SA) and put them in the appropriate
828 fields of the Wireless Header. Thus the packet length is then the
829 initial + 18 (+30-12) */
830
831 if (!(buff = find_tx_buff(priv, len + 18))) {
832 dev->stats.tx_dropped++;
833 spin_unlock_irqrestore(&priv->irqlock, flags);
834 spin_unlock_bh(&priv->timerlock);
835 netif_stop_queue(dev);
836 return NETDEV_TX_BUSY;
837 }
838
839 frame_ctl = IEEE80211_FTYPE_DATA;
840 header.duration_id = 0;
841 header.seq_ctrl = 0;
842 if (priv->wep_is_on)
843 frame_ctl |= IEEE80211_FCTL_PROTECTED;
844 if (priv->operating_mode == IW_MODE_ADHOC) {
845 skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN);
846 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
847 memcpy(&header.addr3, priv->BSSID, ETH_ALEN);
848 } else {
849 frame_ctl |= IEEE80211_FCTL_TODS;
850 memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN);
851 memcpy(&header.addr2, dev->dev_addr, ETH_ALEN);
852 skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN);
853 }
854
855 if (priv->use_wpa)
856 memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN);
857
858 header.frame_control = cpu_to_le16(frame_ctl);
859 /* Copy the wireless header into the card */
860 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
861 /* Copy the packet sans its 802.3 header addresses which have been replaced */
862 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
863 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
864
865 /* low bit of first byte of destination tells us if broadcast */
866 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
867 dev->stats.tx_bytes += len;
868
869 spin_unlock_irqrestore(&priv->irqlock, flags);
870 spin_unlock_bh(&priv->timerlock);
871 dev_kfree_skb(skb);
872
873 return NETDEV_TX_OK;
874}
875
876static void atmel_transmit_management_frame(struct atmel_private *priv,
877 struct ieee80211_hdr *header,
878 u8 *body, int body_len)
879{
880 u16 buff;
881 int len = MGMT_FRAME_BODY_OFFSET + body_len;
882
883 if (!(buff = find_tx_buff(priv, len)))
884 return;
885
886 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
887 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
888 priv->tx_buff_tail += len;
889 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
890}
891
892static void fast_rx_path(struct atmel_private *priv,
893 struct ieee80211_hdr *header,
894 u16 msdu_size, u16 rx_packet_loc, u32 crc)
895{
896 /* fast path: unfragmented packet copy directly into skbuf */
897 u8 mac4[6];
898 struct sk_buff *skb;
899 unsigned char *skbp;
900
901 /* get the final, mac 4 header field, this tells us encapsulation */
902 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
903 msdu_size -= 6;
904
905 if (priv->do_rx_crc) {
906 crc = crc32_le(crc, mac4, 6);
907 msdu_size -= 4;
908 }
909
910 if (!(skb = dev_alloc_skb(msdu_size + 14))) {
911 priv->dev->stats.rx_dropped++;
912 return;
913 }
914
915 skb_reserve(skb, 2);
916 skbp = skb_put(skb, msdu_size + 12);
917 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
918
919 if (priv->do_rx_crc) {
920 u32 netcrc;
921 crc = crc32_le(crc, skbp + 12, msdu_size);
922 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
923 if ((crc ^ 0xffffffff) != netcrc) {
924 priv->dev->stats.rx_crc_errors++;
925 dev_kfree_skb(skb);
926 return;
927 }
928 }
929
930 memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */
931 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
932 memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN);
933 else
934 memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */
935
936 skb->protocol = eth_type_trans(skb, priv->dev);
937 skb->ip_summed = CHECKSUM_NONE;
938 netif_rx(skb);
939 priv->dev->stats.rx_bytes += 12 + msdu_size;
940 priv->dev->stats.rx_packets++;
941}
942
943/* Test to see if the packet in card memory at packet_loc has a valid CRC
944 It doesn't matter that this is slow: it is only used to proble the first few
945 packets. */
946static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
947{
948 int i = msdu_size - 4;
949 u32 netcrc, crc = 0xffffffff;
950
951 if (msdu_size < 4)
952 return 0;
953
954 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
955
956 atmel_writeAR(priv->dev, packet_loc);
957 while (i--) {
958 u8 octet = atmel_read8(priv->dev, DR);
959 crc = crc32_le(crc, &octet, 1);
960 }
961
962 return (crc ^ 0xffffffff) == netcrc;
963}
964
965static void frag_rx_path(struct atmel_private *priv,
966 struct ieee80211_hdr *header,
967 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
968 u8 frag_no, int more_frags)
969{
970 u8 mac4[ETH_ALEN];
971 u8 source[ETH_ALEN];
972 struct sk_buff *skb;
973
974 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
975 memcpy(source, header->addr3, ETH_ALEN);
976 else
977 memcpy(source, header->addr2, ETH_ALEN);
978
979 rx_packet_loc += 24; /* skip header */
980
981 if (priv->do_rx_crc)
982 msdu_size -= 4;
983
984 if (frag_no == 0) { /* first fragment */
985 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, ETH_ALEN);
986 msdu_size -= ETH_ALEN;
987 rx_packet_loc += ETH_ALEN;
988
989 if (priv->do_rx_crc)
990 crc = crc32_le(crc, mac4, 6);
991
992 priv->frag_seq = seq_no;
993 priv->frag_no = 1;
994 priv->frag_len = msdu_size;
995 memcpy(priv->frag_source, source, ETH_ALEN);
996 memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN);
997 memcpy(priv->rx_buf, header->addr1, ETH_ALEN);
998
999 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1000
1001 if (priv->do_rx_crc) {
1002 u32 netcrc;
1003 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1004 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1005 if ((crc ^ 0xffffffff) != netcrc) {
1006 priv->dev->stats.rx_crc_errors++;
1007 eth_broadcast_addr(priv->frag_source);
1008 }
1009 }
1010
1011 } else if (priv->frag_no == frag_no &&
1012 priv->frag_seq == seq_no &&
1013 memcmp(priv->frag_source, source, ETH_ALEN) == 0) {
1014
1015 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1016 rx_packet_loc, msdu_size);
1017 if (priv->do_rx_crc) {
1018 u32 netcrc;
1019 crc = crc32_le(crc,
1020 &priv->rx_buf[12 + priv->frag_len],
1021 msdu_size);
1022 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1023 if ((crc ^ 0xffffffff) != netcrc) {
1024 priv->dev->stats.rx_crc_errors++;
1025 eth_broadcast_addr(priv->frag_source);
1026 more_frags = 1; /* don't send broken assembly */
1027 }
1028 }
1029
1030 priv->frag_len += msdu_size;
1031 priv->frag_no++;
1032
1033 if (!more_frags) { /* last one */
1034 eth_broadcast_addr(priv->frag_source);
1035 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1036 priv->dev->stats.rx_dropped++;
1037 } else {
1038 skb_reserve(skb, 2);
1039 memcpy(skb_put(skb, priv->frag_len + 12),
1040 priv->rx_buf,
1041 priv->frag_len + 12);
1042 skb->protocol = eth_type_trans(skb, priv->dev);
1043 skb->ip_summed = CHECKSUM_NONE;
1044 netif_rx(skb);
1045 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1046 priv->dev->stats.rx_packets++;
1047 }
1048 }
1049 } else
1050 priv->wstats.discard.fragment++;
1051}
1052
1053static void rx_done_irq(struct atmel_private *priv)
1054{
1055 int i;
1056 struct ieee80211_hdr header;
1057
1058 for (i = 0;
1059 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1060 i < priv->host_info.rx_desc_count;
1061 i++) {
1062
1063 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1064 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1065 u32 crc = 0xffffffff;
1066
1067 if (status != RX_STATUS_SUCCESS) {
1068 if (status == 0xc1) /* determined by experiment */
1069 priv->wstats.discard.nwid++;
1070 else
1071 priv->dev->stats.rx_errors++;
1072 goto next;
1073 }
1074
1075 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1076 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1077
1078 if (msdu_size < 30) {
1079 priv->dev->stats.rx_errors++;
1080 goto next;
1081 }
1082
1083 /* Get header as far as end of seq_ctrl */
1084 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1085 frame_ctl = le16_to_cpu(header.frame_control);
1086 seq_control = le16_to_cpu(header.seq_ctrl);
1087
1088 /* probe for CRC use here if needed once five packets have
1089 arrived with the same crc status, we assume we know what's
1090 happening and stop probing */
1091 if (priv->probe_crc) {
1092 if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1093 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1094 } else {
1095 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1096 }
1097 if (priv->do_rx_crc) {
1098 if (priv->crc_ok_cnt++ > 5)
1099 priv->probe_crc = 0;
1100 } else {
1101 if (priv->crc_ko_cnt++ > 5)
1102 priv->probe_crc = 0;
1103 }
1104 }
1105
1106 /* don't CRC header when WEP in use */
1107 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1108 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1109 }
1110 msdu_size -= 24; /* header */
1111
1112 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1113 int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1114 u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1115 u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1116
1117 if (!more_fragments && packet_fragment_no == 0) {
1118 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1119 } else {
1120 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1121 packet_sequence_no, packet_fragment_no, more_fragments);
1122 }
1123 }
1124
1125 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1126 /* copy rest of packet into buffer */
1127 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1128
1129 /* we use the same buffer for frag reassembly and control packets */
1130 eth_broadcast_addr(priv->frag_source);
1131
1132 if (priv->do_rx_crc) {
1133 /* last 4 octets is crc */
1134 msdu_size -= 4;
1135 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1136 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1137 priv->dev->stats.rx_crc_errors++;
1138 goto next;
1139 }
1140 }
1141
1142 atmel_management_frame(priv, &header, msdu_size,
1143 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1144 }
1145
1146next:
1147 /* release descriptor */
1148 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1149
1150 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1151 priv->rx_desc_head++;
1152 else
1153 priv->rx_desc_head = 0;
1154 }
1155}
1156
1157static irqreturn_t service_interrupt(int irq, void *dev_id)
1158{
1159 struct net_device *dev = (struct net_device *) dev_id;
1160 struct atmel_private *priv = netdev_priv(dev);
1161 u8 isr;
1162 int i = -1;
1163 static const u8 irq_order[] = {
1164 ISR_OUT_OF_RANGE,
1165 ISR_RxCOMPLETE,
1166 ISR_TxCOMPLETE,
1167 ISR_RxFRAMELOST,
1168 ISR_FATAL_ERROR,
1169 ISR_COMMAND_COMPLETE,
1170 ISR_IBSS_MERGE,
1171 ISR_GENERIC_IRQ
1172 };
1173
1174 if (priv->card && priv->present_callback &&
1175 !(*priv->present_callback)(priv->card))
1176 return IRQ_HANDLED;
1177
1178 /* In this state upper-level code assumes it can mess with
1179 the card unhampered by interrupts which may change register state.
1180 Note that even though the card shouldn't generate interrupts
1181 the inturrupt line may be shared. This allows card setup
1182 to go on without disabling interrupts for a long time. */
1183 if (priv->station_state == STATION_STATE_DOWN)
1184 return IRQ_NONE;
1185
1186 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1187
1188 while (1) {
1189 if (!atmel_lock_mac(priv)) {
1190 /* failed to contact card */
1191 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1192 return IRQ_HANDLED;
1193 }
1194
1195 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1196 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1197
1198 if (!isr) {
1199 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1200 return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1201 }
1202
1203 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1204
1205 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1206 if (isr & irq_order[i])
1207 break;
1208
1209 if (!atmel_lock_mac(priv)) {
1210 /* failed to contact card */
1211 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1212 return IRQ_HANDLED;
1213 }
1214
1215 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1216 isr ^= irq_order[i];
1217 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1218 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1219
1220 switch (irq_order[i]) {
1221
1222 case ISR_OUT_OF_RANGE:
1223 if (priv->operating_mode == IW_MODE_INFRA &&
1224 priv->station_state == STATION_STATE_READY) {
1225 priv->station_is_associated = 0;
1226 atmel_scan(priv, 1);
1227 }
1228 break;
1229
1230 case ISR_RxFRAMELOST:
1231 priv->wstats.discard.misc++;
1232 /* fall through */
1233 case ISR_RxCOMPLETE:
1234 rx_done_irq(priv);
1235 break;
1236
1237 case ISR_TxCOMPLETE:
1238 tx_done_irq(priv);
1239 break;
1240
1241 case ISR_FATAL_ERROR:
1242 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1243 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1244 break;
1245
1246 case ISR_COMMAND_COMPLETE:
1247 atmel_command_irq(priv);
1248 break;
1249
1250 case ISR_IBSS_MERGE:
1251 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1252 priv->CurrentBSSID, 6);
1253 /* The WPA stuff cares about the current AP address */
1254 if (priv->use_wpa)
1255 build_wpa_mib(priv);
1256 break;
1257 case ISR_GENERIC_IRQ:
1258 printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1259 break;
1260 }
1261 }
1262}
1263
1264static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1265{
1266 struct atmel_private *priv = netdev_priv(dev);
1267
1268 /* update the link quality here in case we are seeing no beacons
1269 at all to drive the process */
1270 atmel_smooth_qual(priv);
1271
1272 priv->wstats.status = priv->station_state;
1273
1274 if (priv->operating_mode == IW_MODE_INFRA) {
1275 if (priv->station_state != STATION_STATE_READY) {
1276 priv->wstats.qual.qual = 0;
1277 priv->wstats.qual.level = 0;
1278 priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1279 | IW_QUAL_LEVEL_INVALID);
1280 }
1281 priv->wstats.qual.noise = 0;
1282 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1283 } else {
1284 /* Quality levels cannot be determined in ad-hoc mode,
1285 because we can 'hear' more that one remote station. */
1286 priv->wstats.qual.qual = 0;
1287 priv->wstats.qual.level = 0;
1288 priv->wstats.qual.noise = 0;
1289 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1290 | IW_QUAL_LEVEL_INVALID
1291 | IW_QUAL_NOISE_INVALID;
1292 priv->wstats.miss.beacon = 0;
1293 }
1294
1295 return &priv->wstats;
1296}
1297
1298static int atmel_set_mac_address(struct net_device *dev, void *p)
1299{
1300 struct sockaddr *addr = p;
1301
1302 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1303 return atmel_open(dev);
1304}
1305
1306EXPORT_SYMBOL(atmel_open);
1307
1308int atmel_open(struct net_device *dev)
1309{
1310 struct atmel_private *priv = netdev_priv(dev);
1311 int i, channel, err;
1312
1313 /* any scheduled timer is no longer needed and might screw things up.. */
1314 del_timer_sync(&priv->management_timer);
1315
1316 /* Interrupts will not touch the card once in this state... */
1317 priv->station_state = STATION_STATE_DOWN;
1318
1319 if (priv->new_SSID_size) {
1320 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1321 priv->SSID_size = priv->new_SSID_size;
1322 priv->new_SSID_size = 0;
1323 }
1324 priv->BSS_list_entries = 0;
1325
1326 priv->AuthenticationRequestRetryCnt = 0;
1327 priv->AssociationRequestRetryCnt = 0;
1328 priv->ReAssociationRequestRetryCnt = 0;
1329 priv->CurrentAuthentTransactionSeqNum = 0x0001;
1330 priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1331
1332 priv->site_survey_state = SITE_SURVEY_IDLE;
1333 priv->station_is_associated = 0;
1334
1335 err = reset_atmel_card(dev);
1336 if (err)
1337 return err;
1338
1339 if (priv->config_reg_domain) {
1340 priv->reg_domain = priv->config_reg_domain;
1341 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1342 } else {
1343 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1344 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1345 if (priv->reg_domain == channel_table[i].reg_domain)
1346 break;
1347 if (i == ARRAY_SIZE(channel_table)) {
1348 priv->reg_domain = REG_DOMAIN_MKK1;
1349 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1350 }
1351 }
1352
1353 if ((channel = atmel_validate_channel(priv, priv->channel)))
1354 priv->channel = channel;
1355
1356 /* this moves station_state on.... */
1357 atmel_scan(priv, 1);
1358
1359 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1360 return 0;
1361}
1362
1363static int atmel_close(struct net_device *dev)
1364{
1365 struct atmel_private *priv = netdev_priv(dev);
1366
1367 /* Send event to userspace that we are disassociating */
1368 if (priv->station_state == STATION_STATE_READY) {
1369 union iwreq_data wrqu;
1370
1371 wrqu.data.length = 0;
1372 wrqu.data.flags = 0;
1373 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1374 eth_zero_addr(wrqu.ap_addr.sa_data);
1375 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1376 }
1377
1378 atmel_enter_state(priv, STATION_STATE_DOWN);
1379
1380 if (priv->bus_type == BUS_TYPE_PCCARD)
1381 atmel_write16(dev, GCR, 0x0060);
1382 atmel_write16(dev, GCR, 0x0040);
1383 return 0;
1384}
1385
1386static int atmel_validate_channel(struct atmel_private *priv, int channel)
1387{
1388 /* check that channel is OK, if so return zero,
1389 else return suitable default channel */
1390 int i;
1391
1392 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1393 if (priv->reg_domain == channel_table[i].reg_domain) {
1394 if (channel >= channel_table[i].min &&
1395 channel <= channel_table[i].max)
1396 return 0;
1397 else
1398 return channel_table[i].min;
1399 }
1400 return 0;
1401}
1402
1403static int atmel_proc_show(struct seq_file *m, void *v)
1404{
1405 struct atmel_private *priv = m->private;
1406 int i;
1407 char *s, *r, *c;
1408
1409 seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1410
1411 if (priv->station_state != STATION_STATE_DOWN) {
1412 seq_printf(m,
1413 "Firmware version:\t%d.%d build %d\n"
1414 "Firmware location:\t",
1415 priv->host_info.major_version,
1416 priv->host_info.minor_version,
1417 priv->host_info.build_version);
1418
1419 if (priv->card_type != CARD_TYPE_EEPROM)
1420 seq_puts(m, "on card\n");
1421 else if (priv->firmware)
1422 seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1423 else
1424 seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1425
1426 switch (priv->card_type) {
1427 case CARD_TYPE_PARALLEL_FLASH:
1428 c = "Parallel flash";
1429 break;
1430 case CARD_TYPE_SPI_FLASH:
1431 c = "SPI flash\n";
1432 break;
1433 case CARD_TYPE_EEPROM:
1434 c = "EEPROM";
1435 break;
1436 default:
1437 c = "<unknown>";
1438 }
1439
1440 r = "<unknown>";
1441 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1442 if (priv->reg_domain == channel_table[i].reg_domain)
1443 r = channel_table[i].name;
1444
1445 seq_printf(m, "MAC memory type:\t%s\n", c);
1446 seq_printf(m, "Regulatory domain:\t%s\n", r);
1447 seq_printf(m, "Host CRC checking:\t%s\n",
1448 priv->do_rx_crc ? "On" : "Off");
1449 seq_printf(m, "WPA-capable firmware:\t%s\n",
1450 priv->use_wpa ? "Yes" : "No");
1451 }
1452
1453 switch (priv->station_state) {
1454 case STATION_STATE_SCANNING:
1455 s = "Scanning";
1456 break;
1457 case STATION_STATE_JOINNING:
1458 s = "Joining";
1459 break;
1460 case STATION_STATE_AUTHENTICATING:
1461 s = "Authenticating";
1462 break;
1463 case STATION_STATE_ASSOCIATING:
1464 s = "Associating";
1465 break;
1466 case STATION_STATE_READY:
1467 s = "Ready";
1468 break;
1469 case STATION_STATE_REASSOCIATING:
1470 s = "Reassociating";
1471 break;
1472 case STATION_STATE_MGMT_ERROR:
1473 s = "Management error";
1474 break;
1475 case STATION_STATE_DOWN:
1476 s = "Down";
1477 break;
1478 default:
1479 s = "<unknown>";
1480 }
1481
1482 seq_printf(m, "Current state:\t\t%s\n", s);
1483 return 0;
1484}
1485
1486static int atmel_proc_open(struct inode *inode, struct file *file)
1487{
1488 return single_open(file, atmel_proc_show, PDE_DATA(inode));
1489}
1490
1491static const struct file_operations atmel_proc_fops = {
1492 .open = atmel_proc_open,
1493 .read = seq_read,
1494 .llseek = seq_lseek,
1495 .release = single_release,
1496};
1497
1498static const struct net_device_ops atmel_netdev_ops = {
1499 .ndo_open = atmel_open,
1500 .ndo_stop = atmel_close,
1501 .ndo_set_mac_address = atmel_set_mac_address,
1502 .ndo_start_xmit = start_tx,
1503 .ndo_do_ioctl = atmel_ioctl,
1504 .ndo_validate_addr = eth_validate_addr,
1505};
1506
1507struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1508 const AtmelFWType fw_type,
1509 struct device *sys_dev,
1510 int (*card_present)(void *), void *card)
1511{
1512 struct net_device *dev;
1513 struct atmel_private *priv;
1514 int rc;
1515
1516 /* Create the network device object. */
1517 dev = alloc_etherdev(sizeof(*priv));
1518 if (!dev)
1519 return NULL;
1520
1521 if (dev_alloc_name(dev, dev->name) < 0) {
1522 printk(KERN_ERR "atmel: Couldn't get name!\n");
1523 goto err_out_free;
1524 }
1525
1526 priv = netdev_priv(dev);
1527 priv->dev = dev;
1528 priv->sys_dev = sys_dev;
1529 priv->present_callback = card_present;
1530 priv->card = card;
1531 priv->firmware = NULL;
1532 priv->firmware_id[0] = '\0';
1533 priv->firmware_type = fw_type;
1534 if (firmware) /* module parameter */
1535 strcpy(priv->firmware_id, firmware);
1536 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1537 priv->station_state = STATION_STATE_DOWN;
1538 priv->do_rx_crc = 0;
1539 /* For PCMCIA cards, some chips need CRC, some don't
1540 so we have to probe. */
1541 if (priv->bus_type == BUS_TYPE_PCCARD) {
1542 priv->probe_crc = 1;
1543 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1544 } else
1545 priv->probe_crc = 0;
1546 priv->last_qual = jiffies;
1547 priv->last_beacon_timestamp = 0;
1548 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1549 eth_zero_addr(priv->BSSID);
1550 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1551 priv->station_was_associated = 0;
1552
1553 priv->last_survey = jiffies;
1554 priv->preamble = LONG_PREAMBLE;
1555 priv->operating_mode = IW_MODE_INFRA;
1556 priv->connect_to_any_BSS = 0;
1557 priv->config_reg_domain = 0;
1558 priv->reg_domain = 0;
1559 priv->tx_rate = 3;
1560 priv->auto_tx_rate = 1;
1561 priv->channel = 4;
1562 priv->power_mode = 0;
1563 priv->SSID[0] = '\0';
1564 priv->SSID_size = 0;
1565 priv->new_SSID_size = 0;
1566 priv->frag_threshold = 2346;
1567 priv->rts_threshold = 2347;
1568 priv->short_retry = 7;
1569 priv->long_retry = 4;
1570
1571 priv->wep_is_on = 0;
1572 priv->default_key = 0;
1573 priv->encryption_level = 0;
1574 priv->exclude_unencrypted = 0;
1575 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1576 priv->use_wpa = 0;
1577 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1578 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1579
1580 priv->default_beacon_period = priv->beacon_period = 100;
1581 priv->listen_interval = 1;
1582
1583 init_timer(&priv->management_timer);
1584 spin_lock_init(&priv->irqlock);
1585 spin_lock_init(&priv->timerlock);
1586 priv->management_timer.function = atmel_management_timer;
1587 priv->management_timer.data = (unsigned long) dev;
1588
1589 dev->netdev_ops = &atmel_netdev_ops;
1590 dev->wireless_handlers = &atmel_handler_def;
1591 dev->irq = irq;
1592 dev->base_addr = port;
1593
1594 /* MTU range: 68 - 2312 */
1595 dev->min_mtu = 68;
1596 dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN;
1597
1598 SET_NETDEV_DEV(dev, sys_dev);
1599
1600 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1601 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1602 goto err_out_free;
1603 }
1604
1605 if (!request_region(dev->base_addr, 32,
1606 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
1607 goto err_out_irq;
1608 }
1609
1610 if (register_netdev(dev))
1611 goto err_out_res;
1612
1613 if (!probe_atmel_card(dev)) {
1614 unregister_netdev(dev);
1615 goto err_out_res;
1616 }
1617
1618 netif_carrier_off(dev);
1619
1620 if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv))
1621 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1622
1623 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1624 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1625
1626 return dev;
1627
1628err_out_res:
1629 release_region(dev->base_addr, 32);
1630err_out_irq:
1631 free_irq(dev->irq, dev);
1632err_out_free:
1633 free_netdev(dev);
1634 return NULL;
1635}
1636
1637EXPORT_SYMBOL(init_atmel_card);
1638
1639void stop_atmel_card(struct net_device *dev)
1640{
1641 struct atmel_private *priv = netdev_priv(dev);
1642
1643 /* put a brick on it... */
1644 if (priv->bus_type == BUS_TYPE_PCCARD)
1645 atmel_write16(dev, GCR, 0x0060);
1646 atmel_write16(dev, GCR, 0x0040);
1647
1648 del_timer_sync(&priv->management_timer);
1649 unregister_netdev(dev);
1650 remove_proc_entry("driver/atmel", NULL);
1651 free_irq(dev->irq, dev);
1652 kfree(priv->firmware);
1653 release_region(dev->base_addr, 32);
1654 free_netdev(dev);
1655}
1656
1657EXPORT_SYMBOL(stop_atmel_card);
1658
1659static int atmel_set_essid(struct net_device *dev,
1660 struct iw_request_info *info,
1661 struct iw_point *dwrq,
1662 char *extra)
1663{
1664 struct atmel_private *priv = netdev_priv(dev);
1665
1666 /* Check if we asked for `any' */
1667 if (dwrq->flags == 0) {
1668 priv->connect_to_any_BSS = 1;
1669 } else {
1670 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1671
1672 priv->connect_to_any_BSS = 0;
1673
1674 /* Check the size of the string */
1675 if (dwrq->length > MAX_SSID_LENGTH)
1676 return -E2BIG;
1677 if (index != 0)
1678 return -EINVAL;
1679
1680 memcpy(priv->new_SSID, extra, dwrq->length);
1681 priv->new_SSID_size = dwrq->length;
1682 }
1683
1684 return -EINPROGRESS;
1685}
1686
1687static int atmel_get_essid(struct net_device *dev,
1688 struct iw_request_info *info,
1689 struct iw_point *dwrq,
1690 char *extra)
1691{
1692 struct atmel_private *priv = netdev_priv(dev);
1693
1694 /* Get the current SSID */
1695 if (priv->new_SSID_size != 0) {
1696 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1697 dwrq->length = priv->new_SSID_size;
1698 } else {
1699 memcpy(extra, priv->SSID, priv->SSID_size);
1700 dwrq->length = priv->SSID_size;
1701 }
1702
1703 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1704
1705 return 0;
1706}
1707
1708static int atmel_get_wap(struct net_device *dev,
1709 struct iw_request_info *info,
1710 struct sockaddr *awrq,
1711 char *extra)
1712{
1713 struct atmel_private *priv = netdev_priv(dev);
1714 memcpy(awrq->sa_data, priv->CurrentBSSID, ETH_ALEN);
1715 awrq->sa_family = ARPHRD_ETHER;
1716
1717 return 0;
1718}
1719
1720static int atmel_set_encode(struct net_device *dev,
1721 struct iw_request_info *info,
1722 struct iw_point *dwrq,
1723 char *extra)
1724{
1725 struct atmel_private *priv = netdev_priv(dev);
1726
1727 /* Basic checking: do we have a key to set ?
1728 * Note : with the new API, it's impossible to get a NULL pointer.
1729 * Therefore, we need to check a key size == 0 instead.
1730 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1731 * when no key is present (only change flags), but older versions
1732 * don't do it. - Jean II */
1733 if (dwrq->length > 0) {
1734 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1735 int current_index = priv->default_key;
1736 /* Check the size of the key */
1737 if (dwrq->length > 13) {
1738 return -EINVAL;
1739 }
1740 /* Check the index (none -> use current) */
1741 if (index < 0 || index >= 4)
1742 index = current_index;
1743 else
1744 priv->default_key = index;
1745 /* Set the length */
1746 if (dwrq->length > 5)
1747 priv->wep_key_len[index] = 13;
1748 else
1749 if (dwrq->length > 0)
1750 priv->wep_key_len[index] = 5;
1751 else
1752 /* Disable the key */
1753 priv->wep_key_len[index] = 0;
1754 /* Check if the key is not marked as invalid */
1755 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1756 /* Cleanup */
1757 memset(priv->wep_keys[index], 0, 13);
1758 /* Copy the key in the driver */
1759 memcpy(priv->wep_keys[index], extra, dwrq->length);
1760 }
1761 /* WE specify that if a valid key is set, encryption
1762 * should be enabled (user may turn it off later)
1763 * This is also how "iwconfig ethX key on" works */
1764 if (index == current_index &&
1765 priv->wep_key_len[index] > 0) {
1766 priv->wep_is_on = 1;
1767 priv->exclude_unencrypted = 1;
1768 if (priv->wep_key_len[index] > 5) {
1769 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1770 priv->encryption_level = 2;
1771 } else {
1772 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1773 priv->encryption_level = 1;
1774 }
1775 }
1776 } else {
1777 /* Do we want to just set the transmit key index ? */
1778 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1779 if (index >= 0 && index < 4) {
1780 priv->default_key = index;
1781 } else
1782 /* Don't complain if only change the mode */
1783 if (!(dwrq->flags & IW_ENCODE_MODE))
1784 return -EINVAL;
1785 }
1786 /* Read the flags */
1787 if (dwrq->flags & IW_ENCODE_DISABLED) {
1788 priv->wep_is_on = 0;
1789 priv->encryption_level = 0;
1790 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1791 } else {
1792 priv->wep_is_on = 1;
1793 if (priv->wep_key_len[priv->default_key] > 5) {
1794 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1795 priv->encryption_level = 2;
1796 } else {
1797 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1798 priv->encryption_level = 1;
1799 }
1800 }
1801 if (dwrq->flags & IW_ENCODE_RESTRICTED)
1802 priv->exclude_unencrypted = 1;
1803 if (dwrq->flags & IW_ENCODE_OPEN)
1804 priv->exclude_unencrypted = 0;
1805
1806 return -EINPROGRESS; /* Call commit handler */
1807}
1808
1809static int atmel_get_encode(struct net_device *dev,
1810 struct iw_request_info *info,
1811 struct iw_point *dwrq,
1812 char *extra)
1813{
1814 struct atmel_private *priv = netdev_priv(dev);
1815 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1816
1817 if (!priv->wep_is_on)
1818 dwrq->flags = IW_ENCODE_DISABLED;
1819 else {
1820 if (priv->exclude_unencrypted)
1821 dwrq->flags = IW_ENCODE_RESTRICTED;
1822 else
1823 dwrq->flags = IW_ENCODE_OPEN;
1824 }
1825 /* Which key do we want ? -1 -> tx index */
1826 if (index < 0 || index >= 4)
1827 index = priv->default_key;
1828 dwrq->flags |= index + 1;
1829 /* Copy the key to the user buffer */
1830 dwrq->length = priv->wep_key_len[index];
1831 if (dwrq->length > 16) {
1832 dwrq->length = 0;
1833 } else {
1834 memset(extra, 0, 16);
1835 memcpy(extra, priv->wep_keys[index], dwrq->length);
1836 }
1837
1838 return 0;
1839}
1840
1841static int atmel_set_encodeext(struct net_device *dev,
1842 struct iw_request_info *info,
1843 union iwreq_data *wrqu,
1844 char *extra)
1845{
1846 struct atmel_private *priv = netdev_priv(dev);
1847 struct iw_point *encoding = &wrqu->encoding;
1848 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1849 int idx, key_len, alg = ext->alg, set_key = 1;
1850
1851 /* Determine and validate the key index */
1852 idx = encoding->flags & IW_ENCODE_INDEX;
1853 if (idx) {
1854 if (idx < 1 || idx > 4)
1855 return -EINVAL;
1856 idx--;
1857 } else
1858 idx = priv->default_key;
1859
1860 if (encoding->flags & IW_ENCODE_DISABLED)
1861 alg = IW_ENCODE_ALG_NONE;
1862
1863 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1864 priv->default_key = idx;
1865 set_key = ext->key_len > 0 ? 1 : 0;
1866 }
1867
1868 if (set_key) {
1869 /* Set the requested key first */
1870 switch (alg) {
1871 case IW_ENCODE_ALG_NONE:
1872 priv->wep_is_on = 0;
1873 priv->encryption_level = 0;
1874 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1875 break;
1876 case IW_ENCODE_ALG_WEP:
1877 if (ext->key_len > 5) {
1878 priv->wep_key_len[idx] = 13;
1879 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1880 priv->encryption_level = 2;
1881 } else if (ext->key_len > 0) {
1882 priv->wep_key_len[idx] = 5;
1883 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1884 priv->encryption_level = 1;
1885 } else {
1886 return -EINVAL;
1887 }
1888 priv->wep_is_on = 1;
1889 memset(priv->wep_keys[idx], 0, 13);
1890 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1891 memcpy(priv->wep_keys[idx], ext->key, key_len);
1892 break;
1893 default:
1894 return -EINVAL;
1895 }
1896 }
1897
1898 return -EINPROGRESS;
1899}
1900
1901static int atmel_get_encodeext(struct net_device *dev,
1902 struct iw_request_info *info,
1903 union iwreq_data *wrqu,
1904 char *extra)
1905{
1906 struct atmel_private *priv = netdev_priv(dev);
1907 struct iw_point *encoding = &wrqu->encoding;
1908 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1909 int idx, max_key_len;
1910
1911 max_key_len = encoding->length - sizeof(*ext);
1912 if (max_key_len < 0)
1913 return -EINVAL;
1914
1915 idx = encoding->flags & IW_ENCODE_INDEX;
1916 if (idx) {
1917 if (idx < 1 || idx > 4)
1918 return -EINVAL;
1919 idx--;
1920 } else
1921 idx = priv->default_key;
1922
1923 encoding->flags = idx + 1;
1924 memset(ext, 0, sizeof(*ext));
1925
1926 if (!priv->wep_is_on) {
1927 ext->alg = IW_ENCODE_ALG_NONE;
1928 ext->key_len = 0;
1929 encoding->flags |= IW_ENCODE_DISABLED;
1930 } else {
1931 if (priv->encryption_level > 0)
1932 ext->alg = IW_ENCODE_ALG_WEP;
1933 else
1934 return -EINVAL;
1935
1936 ext->key_len = priv->wep_key_len[idx];
1937 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1938 encoding->flags |= IW_ENCODE_ENABLED;
1939 }
1940
1941 return 0;
1942}
1943
1944static int atmel_set_auth(struct net_device *dev,
1945 struct iw_request_info *info,
1946 union iwreq_data *wrqu, char *extra)
1947{
1948 struct atmel_private *priv = netdev_priv(dev);
1949 struct iw_param *param = &wrqu->param;
1950
1951 switch (param->flags & IW_AUTH_INDEX) {
1952 case IW_AUTH_WPA_VERSION:
1953 case IW_AUTH_CIPHER_PAIRWISE:
1954 case IW_AUTH_CIPHER_GROUP:
1955 case IW_AUTH_KEY_MGMT:
1956 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1957 case IW_AUTH_PRIVACY_INVOKED:
1958 /*
1959 * atmel does not use these parameters
1960 */
1961 break;
1962
1963 case IW_AUTH_DROP_UNENCRYPTED:
1964 priv->exclude_unencrypted = param->value ? 1 : 0;
1965 break;
1966
1967 case IW_AUTH_80211_AUTH_ALG: {
1968 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1969 priv->exclude_unencrypted = 1;
1970 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1971 priv->exclude_unencrypted = 0;
1972 } else
1973 return -EINVAL;
1974 break;
1975 }
1976
1977 case IW_AUTH_WPA_ENABLED:
1978 /* Silently accept disable of WPA */
1979 if (param->value > 0)
1980 return -EOPNOTSUPP;
1981 break;
1982
1983 default:
1984 return -EOPNOTSUPP;
1985 }
1986 return -EINPROGRESS;
1987}
1988
1989static int atmel_get_auth(struct net_device *dev,
1990 struct iw_request_info *info,
1991 union iwreq_data *wrqu, char *extra)
1992{
1993 struct atmel_private *priv = netdev_priv(dev);
1994 struct iw_param *param = &wrqu->param;
1995
1996 switch (param->flags & IW_AUTH_INDEX) {
1997 case IW_AUTH_DROP_UNENCRYPTED:
1998 param->value = priv->exclude_unencrypted;
1999 break;
2000
2001 case IW_AUTH_80211_AUTH_ALG:
2002 if (priv->exclude_unencrypted == 1)
2003 param->value = IW_AUTH_ALG_SHARED_KEY;
2004 else
2005 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2006 break;
2007
2008 case IW_AUTH_WPA_ENABLED:
2009 param->value = 0;
2010 break;
2011
2012 default:
2013 return -EOPNOTSUPP;
2014 }
2015 return 0;
2016}
2017
2018
2019static int atmel_get_name(struct net_device *dev,
2020 struct iw_request_info *info,
2021 char *cwrq,
2022 char *extra)
2023{
2024 strcpy(cwrq, "IEEE 802.11-DS");
2025 return 0;
2026}
2027
2028static int atmel_set_rate(struct net_device *dev,
2029 struct iw_request_info *info,
2030 struct iw_param *vwrq,
2031 char *extra)
2032{
2033 struct atmel_private *priv = netdev_priv(dev);
2034
2035 if (vwrq->fixed == 0) {
2036 priv->tx_rate = 3;
2037 priv->auto_tx_rate = 1;
2038 } else {
2039 priv->auto_tx_rate = 0;
2040
2041 /* Which type of value ? */
2042 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2043 /* Setting by rate index */
2044 priv->tx_rate = vwrq->value;
2045 } else {
2046 /* Setting by frequency value */
2047 switch (vwrq->value) {
2048 case 1000000:
2049 priv->tx_rate = 0;
2050 break;
2051 case 2000000:
2052 priv->tx_rate = 1;
2053 break;
2054 case 5500000:
2055 priv->tx_rate = 2;
2056 break;
2057 case 11000000:
2058 priv->tx_rate = 3;
2059 break;
2060 default:
2061 return -EINVAL;
2062 }
2063 }
2064 }
2065
2066 return -EINPROGRESS;
2067}
2068
2069static int atmel_set_mode(struct net_device *dev,
2070 struct iw_request_info *info,
2071 __u32 *uwrq,
2072 char *extra)
2073{
2074 struct atmel_private *priv = netdev_priv(dev);
2075
2076 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2077 return -EINVAL;
2078
2079 priv->operating_mode = *uwrq;
2080 return -EINPROGRESS;
2081}
2082
2083static int atmel_get_mode(struct net_device *dev,
2084 struct iw_request_info *info,
2085 __u32 *uwrq,
2086 char *extra)
2087{
2088 struct atmel_private *priv = netdev_priv(dev);
2089
2090 *uwrq = priv->operating_mode;
2091 return 0;
2092}
2093
2094static int atmel_get_rate(struct net_device *dev,
2095 struct iw_request_info *info,
2096 struct iw_param *vwrq,
2097 char *extra)
2098{
2099 struct atmel_private *priv = netdev_priv(dev);
2100
2101 if (priv->auto_tx_rate) {
2102 vwrq->fixed = 0;
2103 vwrq->value = 11000000;
2104 } else {
2105 vwrq->fixed = 1;
2106 switch (priv->tx_rate) {
2107 case 0:
2108 vwrq->value = 1000000;
2109 break;
2110 case 1:
2111 vwrq->value = 2000000;
2112 break;
2113 case 2:
2114 vwrq->value = 5500000;
2115 break;
2116 case 3:
2117 vwrq->value = 11000000;
2118 break;
2119 }
2120 }
2121 return 0;
2122}
2123
2124static int atmel_set_power(struct net_device *dev,
2125 struct iw_request_info *info,
2126 struct iw_param *vwrq,
2127 char *extra)
2128{
2129 struct atmel_private *priv = netdev_priv(dev);
2130 priv->power_mode = vwrq->disabled ? 0 : 1;
2131 return -EINPROGRESS;
2132}
2133
2134static int atmel_get_power(struct net_device *dev,
2135 struct iw_request_info *info,
2136 struct iw_param *vwrq,
2137 char *extra)
2138{
2139 struct atmel_private *priv = netdev_priv(dev);
2140 vwrq->disabled = priv->power_mode ? 0 : 1;
2141 vwrq->flags = IW_POWER_ON;
2142 return 0;
2143}
2144
2145static int atmel_set_retry(struct net_device *dev,
2146 struct iw_request_info *info,
2147 struct iw_param *vwrq,
2148 char *extra)
2149{
2150 struct atmel_private *priv = netdev_priv(dev);
2151
2152 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2153 if (vwrq->flags & IW_RETRY_LONG)
2154 priv->long_retry = vwrq->value;
2155 else if (vwrq->flags & IW_RETRY_SHORT)
2156 priv->short_retry = vwrq->value;
2157 else {
2158 /* No modifier : set both */
2159 priv->long_retry = vwrq->value;
2160 priv->short_retry = vwrq->value;
2161 }
2162 return -EINPROGRESS;
2163 }
2164
2165 return -EINVAL;
2166}
2167
2168static int atmel_get_retry(struct net_device *dev,
2169 struct iw_request_info *info,
2170 struct iw_param *vwrq,
2171 char *extra)
2172{
2173 struct atmel_private *priv = netdev_priv(dev);
2174
2175 vwrq->disabled = 0; /* Can't be disabled */
2176
2177 /* Note : by default, display the short retry number */
2178 if (vwrq->flags & IW_RETRY_LONG) {
2179 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2180 vwrq->value = priv->long_retry;
2181 } else {
2182 vwrq->flags = IW_RETRY_LIMIT;
2183 vwrq->value = priv->short_retry;
2184 if (priv->long_retry != priv->short_retry)
2185 vwrq->flags |= IW_RETRY_SHORT;
2186 }
2187
2188 return 0;
2189}
2190
2191static int atmel_set_rts(struct net_device *dev,
2192 struct iw_request_info *info,
2193 struct iw_param *vwrq,
2194 char *extra)
2195{
2196 struct atmel_private *priv = netdev_priv(dev);
2197 int rthr = vwrq->value;
2198
2199 if (vwrq->disabled)
2200 rthr = 2347;
2201 if ((rthr < 0) || (rthr > 2347)) {
2202 return -EINVAL;
2203 }
2204 priv->rts_threshold = rthr;
2205
2206 return -EINPROGRESS; /* Call commit handler */
2207}
2208
2209static int atmel_get_rts(struct net_device *dev,
2210 struct iw_request_info *info,
2211 struct iw_param *vwrq,
2212 char *extra)
2213{
2214 struct atmel_private *priv = netdev_priv(dev);
2215
2216 vwrq->value = priv->rts_threshold;
2217 vwrq->disabled = (vwrq->value >= 2347);
2218 vwrq->fixed = 1;
2219
2220 return 0;
2221}
2222
2223static int atmel_set_frag(struct net_device *dev,
2224 struct iw_request_info *info,
2225 struct iw_param *vwrq,
2226 char *extra)
2227{
2228 struct atmel_private *priv = netdev_priv(dev);
2229 int fthr = vwrq->value;
2230
2231 if (vwrq->disabled)
2232 fthr = 2346;
2233 if ((fthr < 256) || (fthr > 2346)) {
2234 return -EINVAL;
2235 }
2236 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2237 priv->frag_threshold = fthr;
2238
2239 return -EINPROGRESS; /* Call commit handler */
2240}
2241
2242static int atmel_get_frag(struct net_device *dev,
2243 struct iw_request_info *info,
2244 struct iw_param *vwrq,
2245 char *extra)
2246{
2247 struct atmel_private *priv = netdev_priv(dev);
2248
2249 vwrq->value = priv->frag_threshold;
2250 vwrq->disabled = (vwrq->value >= 2346);
2251 vwrq->fixed = 1;
2252
2253 return 0;
2254}
2255
2256static int atmel_set_freq(struct net_device *dev,
2257 struct iw_request_info *info,
2258 struct iw_freq *fwrq,
2259 char *extra)
2260{
2261 struct atmel_private *priv = netdev_priv(dev);
2262 int rc = -EINPROGRESS; /* Call commit handler */
2263
2264 /* If setting by frequency, convert to a channel */
2265 if (fwrq->e == 1) {
2266 int f = fwrq->m / 100000;
2267
2268 /* Hack to fall through... */
2269 fwrq->e = 0;
2270 fwrq->m = ieee80211_frequency_to_channel(f);
2271 }
2272 /* Setting by channel number */
2273 if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
2274 rc = -EOPNOTSUPP;
2275 else {
2276 int channel = fwrq->m;
2277 if (atmel_validate_channel(priv, channel) == 0) {
2278 priv->channel = channel;
2279 } else {
2280 rc = -EINVAL;
2281 }
2282 }
2283 return rc;
2284}
2285
2286static int atmel_get_freq(struct net_device *dev,
2287 struct iw_request_info *info,
2288 struct iw_freq *fwrq,
2289 char *extra)
2290{
2291 struct atmel_private *priv = netdev_priv(dev);
2292
2293 fwrq->m = priv->channel;
2294 fwrq->e = 0;
2295 return 0;
2296}
2297
2298static int atmel_set_scan(struct net_device *dev,
2299 struct iw_request_info *info,
2300 struct iw_point *dwrq,
2301 char *extra)
2302{
2303 struct atmel_private *priv = netdev_priv(dev);
2304 unsigned long flags;
2305
2306 /* Note : you may have realised that, as this is a SET operation,
2307 * this is privileged and therefore a normal user can't
2308 * perform scanning.
2309 * This is not an error, while the device perform scanning,
2310 * traffic doesn't flow, so it's a perfect DoS...
2311 * Jean II */
2312
2313 if (priv->station_state == STATION_STATE_DOWN)
2314 return -EAGAIN;
2315
2316 /* Timeout old surveys. */
2317 if (time_after(jiffies, priv->last_survey + 20 * HZ))
2318 priv->site_survey_state = SITE_SURVEY_IDLE;
2319 priv->last_survey = jiffies;
2320
2321 /* Initiate a scan command */
2322 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2323 return -EBUSY;
2324
2325 del_timer_sync(&priv->management_timer);
2326 spin_lock_irqsave(&priv->irqlock, flags);
2327
2328 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2329 priv->fast_scan = 0;
2330 atmel_scan(priv, 0);
2331 spin_unlock_irqrestore(&priv->irqlock, flags);
2332
2333 return 0;
2334}
2335
2336static int atmel_get_scan(struct net_device *dev,
2337 struct iw_request_info *info,
2338 struct iw_point *dwrq,
2339 char *extra)
2340{
2341 struct atmel_private *priv = netdev_priv(dev);
2342 int i;
2343 char *current_ev = extra;
2344 struct iw_event iwe;
2345
2346 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2347 return -EAGAIN;
2348
2349 for (i = 0; i < priv->BSS_list_entries; i++) {
2350 iwe.cmd = SIOCGIWAP;
2351 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2352 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, ETH_ALEN);
2353 current_ev = iwe_stream_add_event(info, current_ev,
2354 extra + IW_SCAN_MAX_DATA,
2355 &iwe, IW_EV_ADDR_LEN);
2356
2357 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2358 if (iwe.u.data.length > 32)
2359 iwe.u.data.length = 32;
2360 iwe.cmd = SIOCGIWESSID;
2361 iwe.u.data.flags = 1;
2362 current_ev = iwe_stream_add_point(info, current_ev,
2363 extra + IW_SCAN_MAX_DATA,
2364 &iwe, priv->BSSinfo[i].SSID);
2365
2366 iwe.cmd = SIOCGIWMODE;
2367 iwe.u.mode = priv->BSSinfo[i].BSStype;
2368 current_ev = iwe_stream_add_event(info, current_ev,
2369 extra + IW_SCAN_MAX_DATA,
2370 &iwe, IW_EV_UINT_LEN);
2371
2372 iwe.cmd = SIOCGIWFREQ;
2373 iwe.u.freq.m = priv->BSSinfo[i].channel;
2374 iwe.u.freq.e = 0;
2375 current_ev = iwe_stream_add_event(info, current_ev,
2376 extra + IW_SCAN_MAX_DATA,
2377 &iwe, IW_EV_FREQ_LEN);
2378
2379 /* Add quality statistics */
2380 iwe.cmd = IWEVQUAL;
2381 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2382 iwe.u.qual.qual = iwe.u.qual.level;
2383 /* iwe.u.qual.noise = SOMETHING */
2384 current_ev = iwe_stream_add_event(info, current_ev,
2385 extra + IW_SCAN_MAX_DATA,
2386 &iwe, IW_EV_QUAL_LEN);
2387
2388
2389 iwe.cmd = SIOCGIWENCODE;
2390 if (priv->BSSinfo[i].UsingWEP)
2391 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2392 else
2393 iwe.u.data.flags = IW_ENCODE_DISABLED;
2394 iwe.u.data.length = 0;
2395 current_ev = iwe_stream_add_point(info, current_ev,
2396 extra + IW_SCAN_MAX_DATA,
2397 &iwe, NULL);
2398 }
2399
2400 /* Length of data */
2401 dwrq->length = (current_ev - extra);
2402 dwrq->flags = 0;
2403
2404 return 0;
2405}
2406
2407static int atmel_get_range(struct net_device *dev,
2408 struct iw_request_info *info,
2409 struct iw_point *dwrq,
2410 char *extra)
2411{
2412 struct atmel_private *priv = netdev_priv(dev);
2413 struct iw_range *range = (struct iw_range *) extra;
2414 int k, i, j;
2415
2416 dwrq->length = sizeof(struct iw_range);
2417 memset(range, 0, sizeof(struct iw_range));
2418 range->min_nwid = 0x0000;
2419 range->max_nwid = 0x0000;
2420 range->num_channels = 0;
2421 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2422 if (priv->reg_domain == channel_table[j].reg_domain) {
2423 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2424 break;
2425 }
2426 if (range->num_channels != 0) {
2427 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2428 range->freq[k].i = i; /* List index */
2429
2430 /* Values in MHz -> * 10^5 * 10 */
2431 range->freq[k].m = 100000 *
2432 ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ);
2433 range->freq[k++].e = 1;
2434 }
2435 range->num_frequency = k;
2436 }
2437
2438 range->max_qual.qual = 100;
2439 range->max_qual.level = 100;
2440 range->max_qual.noise = 0;
2441 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2442
2443 range->avg_qual.qual = 50;
2444 range->avg_qual.level = 50;
2445 range->avg_qual.noise = 0;
2446 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2447
2448 range->sensitivity = 0;
2449
2450 range->bitrate[0] = 1000000;
2451 range->bitrate[1] = 2000000;
2452 range->bitrate[2] = 5500000;
2453 range->bitrate[3] = 11000000;
2454 range->num_bitrates = 4;
2455
2456 range->min_rts = 0;
2457 range->max_rts = 2347;
2458 range->min_frag = 256;
2459 range->max_frag = 2346;
2460
2461 range->encoding_size[0] = 5;
2462 range->encoding_size[1] = 13;
2463 range->num_encoding_sizes = 2;
2464 range->max_encoding_tokens = 4;
2465
2466 range->pmp_flags = IW_POWER_ON;
2467 range->pmt_flags = IW_POWER_ON;
2468 range->pm_capa = 0;
2469
2470 range->we_version_source = WIRELESS_EXT;
2471 range->we_version_compiled = WIRELESS_EXT;
2472 range->retry_capa = IW_RETRY_LIMIT ;
2473 range->retry_flags = IW_RETRY_LIMIT;
2474 range->r_time_flags = 0;
2475 range->min_retry = 1;
2476 range->max_retry = 65535;
2477
2478 return 0;
2479}
2480
2481static int atmel_set_wap(struct net_device *dev,
2482 struct iw_request_info *info,
2483 struct sockaddr *awrq,
2484 char *extra)
2485{
2486 struct atmel_private *priv = netdev_priv(dev);
2487 int i;
2488 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2489 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2490 unsigned long flags;
2491
2492 if (awrq->sa_family != ARPHRD_ETHER)
2493 return -EINVAL;
2494
2495 if (!memcmp(any, awrq->sa_data, 6) ||
2496 !memcmp(off, awrq->sa_data, 6)) {
2497 del_timer_sync(&priv->management_timer);
2498 spin_lock_irqsave(&priv->irqlock, flags);
2499 atmel_scan(priv, 1);
2500 spin_unlock_irqrestore(&priv->irqlock, flags);
2501 return 0;
2502 }
2503
2504 for (i = 0; i < priv->BSS_list_entries; i++) {
2505 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2506 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2507 return -EINVAL;
2508 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2509 return -EINVAL;
2510 } else {
2511 del_timer_sync(&priv->management_timer);
2512 spin_lock_irqsave(&priv->irqlock, flags);
2513 atmel_join_bss(priv, i);
2514 spin_unlock_irqrestore(&priv->irqlock, flags);
2515 return 0;
2516 }
2517 }
2518 }
2519
2520 return -EINVAL;
2521}
2522
2523static int atmel_config_commit(struct net_device *dev,
2524 struct iw_request_info *info, /* NULL */
2525 void *zwrq, /* NULL */
2526 char *extra) /* NULL */
2527{
2528 return atmel_open(dev);
2529}
2530
2531static const iw_handler atmel_handler[] =
2532{
2533 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
2534 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
2535 (iw_handler) NULL, /* SIOCSIWNWID */
2536 (iw_handler) NULL, /* SIOCGIWNWID */
2537 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2538 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2539 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2540 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
2541 (iw_handler) NULL, /* SIOCSIWSENS */
2542 (iw_handler) NULL, /* SIOCGIWSENS */
2543 (iw_handler) NULL, /* SIOCSIWRANGE */
2544 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2545 (iw_handler) NULL, /* SIOCSIWPRIV */
2546 (iw_handler) NULL, /* SIOCGIWPRIV */
2547 (iw_handler) NULL, /* SIOCSIWSTATS */
2548 (iw_handler) NULL, /* SIOCGIWSTATS */
2549 (iw_handler) NULL, /* SIOCSIWSPY */
2550 (iw_handler) NULL, /* SIOCGIWSPY */
2551 (iw_handler) NULL, /* -- hole -- */
2552 (iw_handler) NULL, /* -- hole -- */
2553 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2554 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2555 (iw_handler) NULL, /* -- hole -- */
2556 (iw_handler) NULL, /* SIOCGIWAPLIST */
2557 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2558 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2559 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2560 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
2561 (iw_handler) NULL, /* SIOCSIWNICKN */
2562 (iw_handler) NULL, /* SIOCGIWNICKN */
2563 (iw_handler) NULL, /* -- hole -- */
2564 (iw_handler) NULL, /* -- hole -- */
2565 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2566 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2567 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2568 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2569 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2570 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
2571 (iw_handler) NULL, /* SIOCSIWTXPOW */
2572 (iw_handler) NULL, /* SIOCGIWTXPOW */
2573 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2574 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2575 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2576 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2577 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2578 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
2579 (iw_handler) NULL, /* -- hole -- */
2580 (iw_handler) NULL, /* -- hole -- */
2581 (iw_handler) NULL, /* SIOCSIWGENIE */
2582 (iw_handler) NULL, /* SIOCGIWGENIE */
2583 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2584 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2585 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2586 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2587 (iw_handler) NULL, /* SIOCSIWPMKSA */
2588};
2589
2590static const iw_handler atmel_private_handler[] =
2591{
2592 NULL, /* SIOCIWFIRSTPRIV */
2593};
2594
2595struct atmel_priv_ioctl {
2596 char id[32];
2597 unsigned char __user *data;
2598 unsigned short len;
2599};
2600
2601#define ATMELFWL SIOCIWFIRSTPRIV
2602#define ATMELIDIFC ATMELFWL + 1
2603#define ATMELRD ATMELFWL + 2
2604#define ATMELMAGIC 0x51807
2605#define REGDOMAINSZ 20
2606
2607static const struct iw_priv_args atmel_private_args[] = {
2608 {
2609 .cmd = ATMELFWL,
2610 .set_args = IW_PRIV_TYPE_BYTE
2611 | IW_PRIV_SIZE_FIXED
2612 | sizeof(struct atmel_priv_ioctl),
2613 .get_args = IW_PRIV_TYPE_NONE,
2614 .name = "atmelfwl"
2615 }, {
2616 .cmd = ATMELIDIFC,
2617 .set_args = IW_PRIV_TYPE_NONE,
2618 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2619 .name = "atmelidifc"
2620 }, {
2621 .cmd = ATMELRD,
2622 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2623 .get_args = IW_PRIV_TYPE_NONE,
2624 .name = "regdomain"
2625 },
2626};
2627
2628static const struct iw_handler_def atmel_handler_def = {
2629 .num_standard = ARRAY_SIZE(atmel_handler),
2630 .num_private = ARRAY_SIZE(atmel_private_handler),
2631 .num_private_args = ARRAY_SIZE(atmel_private_args),
2632 .standard = (iw_handler *) atmel_handler,
2633 .private = (iw_handler *) atmel_private_handler,
2634 .private_args = (struct iw_priv_args *) atmel_private_args,
2635 .get_wireless_stats = atmel_get_wireless_stats
2636};
2637
2638static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2639{
2640 int i, rc = 0;
2641 struct atmel_private *priv = netdev_priv(dev);
2642 struct atmel_priv_ioctl com;
2643 struct iwreq *wrq = (struct iwreq *) rq;
2644 unsigned char *new_firmware;
2645 char domain[REGDOMAINSZ + 1];
2646
2647 switch (cmd) {
2648 case ATMELIDIFC:
2649 wrq->u.param.value = ATMELMAGIC;
2650 break;
2651
2652 case ATMELFWL:
2653 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2654 rc = -EFAULT;
2655 break;
2656 }
2657
2658 if (!capable(CAP_NET_ADMIN)) {
2659 rc = -EPERM;
2660 break;
2661 }
2662
2663 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2664 rc = -ENOMEM;
2665 break;
2666 }
2667
2668 if (copy_from_user(new_firmware, com.data, com.len)) {
2669 kfree(new_firmware);
2670 rc = -EFAULT;
2671 break;
2672 }
2673
2674 kfree(priv->firmware);
2675
2676 priv->firmware = new_firmware;
2677 priv->firmware_length = com.len;
2678 strncpy(priv->firmware_id, com.id, 31);
2679 priv->firmware_id[31] = '\0';
2680 break;
2681
2682 case ATMELRD:
2683 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2684 rc = -EFAULT;
2685 break;
2686 }
2687
2688 if (!capable(CAP_NET_ADMIN)) {
2689 rc = -EPERM;
2690 break;
2691 }
2692
2693 domain[REGDOMAINSZ] = 0;
2694 rc = -EINVAL;
2695 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2696 if (!strcasecmp(channel_table[i].name, domain)) {
2697 priv->config_reg_domain = channel_table[i].reg_domain;
2698 rc = 0;
2699 }
2700 }
2701
2702 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2703 rc = atmel_open(dev);
2704 break;
2705
2706 default:
2707 rc = -EOPNOTSUPP;
2708 }
2709
2710 return rc;
2711}
2712
2713struct auth_body {
2714 __le16 alg;
2715 __le16 trans_seq;
2716 __le16 status;
2717 u8 el_id;
2718 u8 chall_text_len;
2719 u8 chall_text[253];
2720};
2721
2722static void atmel_enter_state(struct atmel_private *priv, int new_state)
2723{
2724 int old_state = priv->station_state;
2725
2726 if (new_state == old_state)
2727 return;
2728
2729 priv->station_state = new_state;
2730
2731 if (new_state == STATION_STATE_READY) {
2732 netif_start_queue(priv->dev);
2733 netif_carrier_on(priv->dev);
2734 }
2735
2736 if (old_state == STATION_STATE_READY) {
2737 netif_carrier_off(priv->dev);
2738 if (netif_running(priv->dev))
2739 netif_stop_queue(priv->dev);
2740 priv->last_beacon_timestamp = 0;
2741 }
2742}
2743
2744static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2745{
2746 struct {
2747 u8 BSSID[ETH_ALEN];
2748 u8 SSID[MAX_SSID_LENGTH];
2749 u8 scan_type;
2750 u8 channel;
2751 __le16 BSS_type;
2752 __le16 min_channel_time;
2753 __le16 max_channel_time;
2754 u8 options;
2755 u8 SSID_size;
2756 } cmd;
2757
2758 eth_broadcast_addr(cmd.BSSID);
2759
2760 if (priv->fast_scan) {
2761 cmd.SSID_size = priv->SSID_size;
2762 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2763 cmd.min_channel_time = cpu_to_le16(10);
2764 cmd.max_channel_time = cpu_to_le16(50);
2765 } else {
2766 priv->BSS_list_entries = 0;
2767 cmd.SSID_size = 0;
2768 cmd.min_channel_time = cpu_to_le16(10);
2769 cmd.max_channel_time = cpu_to_le16(120);
2770 }
2771
2772 cmd.options = 0;
2773
2774 if (!specific_ssid)
2775 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2776
2777 cmd.channel = (priv->channel & 0x7f);
2778 cmd.scan_type = SCAN_TYPE_ACTIVE;
2779 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2780 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2781
2782 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2783
2784 /* This must come after all hardware access to avoid being messed up
2785 by stuff happening in interrupt context after we leave STATE_DOWN */
2786 atmel_enter_state(priv, STATION_STATE_SCANNING);
2787}
2788
2789static void join(struct atmel_private *priv, int type)
2790{
2791 struct {
2792 u8 BSSID[6];
2793 u8 SSID[MAX_SSID_LENGTH];
2794 u8 BSS_type; /* this is a short in a scan command - weird */
2795 u8 channel;
2796 __le16 timeout;
2797 u8 SSID_size;
2798 u8 reserved;
2799 } cmd;
2800
2801 cmd.SSID_size = priv->SSID_size;
2802 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2803 memcpy(cmd.BSSID, priv->CurrentBSSID, ETH_ALEN);
2804 cmd.channel = (priv->channel & 0x7f);
2805 cmd.BSS_type = type;
2806 cmd.timeout = cpu_to_le16(2000);
2807
2808 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2809}
2810
2811static void start(struct atmel_private *priv, int type)
2812{
2813 struct {
2814 u8 BSSID[6];
2815 u8 SSID[MAX_SSID_LENGTH];
2816 u8 BSS_type;
2817 u8 channel;
2818 u8 SSID_size;
2819 u8 reserved[3];
2820 } cmd;
2821
2822 cmd.SSID_size = priv->SSID_size;
2823 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2824 memcpy(cmd.BSSID, priv->BSSID, ETH_ALEN);
2825 cmd.BSS_type = type;
2826 cmd.channel = (priv->channel & 0x7f);
2827
2828 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2829}
2830
2831static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2832 u8 channel)
2833{
2834 int rejoin = 0;
2835 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2836 SHORT_PREAMBLE : LONG_PREAMBLE;
2837
2838 if (priv->preamble != new) {
2839 priv->preamble = new;
2840 rejoin = 1;
2841 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2842 }
2843
2844 if (priv->channel != channel) {
2845 priv->channel = channel;
2846 rejoin = 1;
2847 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2848 }
2849
2850 if (rejoin) {
2851 priv->station_is_associated = 0;
2852 atmel_enter_state(priv, STATION_STATE_JOINNING);
2853
2854 if (priv->operating_mode == IW_MODE_INFRA)
2855 join(priv, BSS_TYPE_INFRASTRUCTURE);
2856 else
2857 join(priv, BSS_TYPE_AD_HOC);
2858 }
2859}
2860
2861static void send_authentication_request(struct atmel_private *priv, u16 system,
2862 u8 *challenge, int challenge_len)
2863{
2864 struct ieee80211_hdr header;
2865 struct auth_body auth;
2866
2867 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2868 header.duration_id = cpu_to_le16(0x8000);
2869 header.seq_ctrl = 0;
2870 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2871 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2872 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2873
2874 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2875 /* no WEP for authentication frames with TrSeqNo 1 */
2876 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2877
2878 auth.alg = cpu_to_le16(system);
2879
2880 auth.status = 0;
2881 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2882 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2883 priv->CurrentAuthentTransactionSeqNum += 2;
2884
2885 if (challenge_len != 0) {
2886 auth.el_id = 16; /* challenge_text */
2887 auth.chall_text_len = challenge_len;
2888 memcpy(auth.chall_text, challenge, challenge_len);
2889 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2890 } else {
2891 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2892 }
2893}
2894
2895static void send_association_request(struct atmel_private *priv, int is_reassoc)
2896{
2897 u8 *ssid_el_p;
2898 int bodysize;
2899 struct ieee80211_hdr header;
2900 struct ass_req_format {
2901 __le16 capability;
2902 __le16 listen_interval;
2903 u8 ap[ETH_ALEN]; /* nothing after here directly accessible */
2904 u8 ssid_el_id;
2905 u8 ssid_len;
2906 u8 ssid[MAX_SSID_LENGTH];
2907 u8 sup_rates_el_id;
2908 u8 sup_rates_len;
2909 u8 rates[4];
2910 } body;
2911
2912 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2913 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2914 header.duration_id = cpu_to_le16(0x8000);
2915 header.seq_ctrl = 0;
2916
2917 memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN);
2918 memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN);
2919 memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN);
2920
2921 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2922 if (priv->wep_is_on)
2923 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2924 if (priv->preamble == SHORT_PREAMBLE)
2925 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2926
2927 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2928
2929 /* current AP address - only in reassoc frame */
2930 if (is_reassoc) {
2931 memcpy(body.ap, priv->CurrentBSSID, ETH_ALEN);
2932 ssid_el_p = &body.ssid_el_id;
2933 bodysize = 18 + priv->SSID_size;
2934 } else {
2935 ssid_el_p = &body.ap[0];
2936 bodysize = 12 + priv->SSID_size;
2937 }
2938
2939 ssid_el_p[0] = WLAN_EID_SSID;
2940 ssid_el_p[1] = priv->SSID_size;
2941 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2942 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2943 ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2944 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2945
2946 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2947}
2948
2949static int is_frame_from_current_bss(struct atmel_private *priv,
2950 struct ieee80211_hdr *header)
2951{
2952 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2953 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2954 else
2955 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2956}
2957
2958static int retrieve_bss(struct atmel_private *priv)
2959{
2960 int i;
2961 int max_rssi = -128;
2962 int max_index = -1;
2963
2964 if (priv->BSS_list_entries == 0)
2965 return -1;
2966
2967 if (priv->connect_to_any_BSS) {
2968 /* Select a BSS with the max-RSSI but of the same type and of
2969 the same WEP mode and that it is not marked as 'bad' (i.e.
2970 we had previously failed to connect to this BSS with the
2971 settings that we currently use) */
2972 priv->current_BSS = 0;
2973 for (i = 0; i < priv->BSS_list_entries; i++) {
2974 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2975 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2976 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2977 !(priv->BSSinfo[i].channel & 0x80)) {
2978 max_rssi = priv->BSSinfo[i].RSSI;
2979 priv->current_BSS = max_index = i;
2980 }
2981 }
2982 return max_index;
2983 }
2984
2985 for (i = 0; i < priv->BSS_list_entries; i++) {
2986 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
2987 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
2988 priv->operating_mode == priv->BSSinfo[i].BSStype &&
2989 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
2990 if (priv->BSSinfo[i].RSSI >= max_rssi) {
2991 max_rssi = priv->BSSinfo[i].RSSI;
2992 max_index = i;
2993 }
2994 }
2995 }
2996 return max_index;
2997}
2998
2999static void store_bss_info(struct atmel_private *priv,
3000 struct ieee80211_hdr *header, u16 capability,
3001 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3002 u8 *ssid, int is_beacon)
3003{
3004 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3005 int i, index;
3006
3007 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3008 if (memcmp(bss, priv->BSSinfo[i].BSSID, ETH_ALEN) == 0)
3009 index = i;
3010
3011 /* If we process a probe and an entry from this BSS exists
3012 we will update the BSS entry with the info from this BSS.
3013 If we process a beacon we will only update RSSI */
3014
3015 if (index == -1) {
3016 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3017 return;
3018 index = priv->BSS_list_entries++;
3019 memcpy(priv->BSSinfo[index].BSSID, bss, ETH_ALEN);
3020 priv->BSSinfo[index].RSSI = rssi;
3021 } else {
3022 if (rssi > priv->BSSinfo[index].RSSI)
3023 priv->BSSinfo[index].RSSI = rssi;
3024 if (is_beacon)
3025 return;
3026 }
3027
3028 priv->BSSinfo[index].channel = channel;
3029 priv->BSSinfo[index].beacon_period = beacon_period;
3030 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3031 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3032 priv->BSSinfo[index].SSIDsize = ssid_len;
3033
3034 if (capability & WLAN_CAPABILITY_IBSS)
3035 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3036 else if (capability & WLAN_CAPABILITY_ESS)
3037 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3038
3039 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3040 SHORT_PREAMBLE : LONG_PREAMBLE;
3041}
3042
3043static void authenticate(struct atmel_private *priv, u16 frame_len)
3044{
3045 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3046 u16 status = le16_to_cpu(auth->status);
3047 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3048 u16 system = le16_to_cpu(auth->alg);
3049
3050 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3051 /* no WEP */
3052 if (priv->station_was_associated) {
3053 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3054 send_association_request(priv, 1);
3055 return;
3056 } else {
3057 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3058 send_association_request(priv, 0);
3059 return;
3060 }
3061 }
3062
3063 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3064 int should_associate = 0;
3065 /* WEP */
3066 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3067 return;
3068
3069 if (system == WLAN_AUTH_OPEN) {
3070 if (trans_seq_no == 0x0002) {
3071 should_associate = 1;
3072 }
3073 } else if (system == WLAN_AUTH_SHARED_KEY) {
3074 if (trans_seq_no == 0x0002 &&
3075 auth->el_id == WLAN_EID_CHALLENGE) {
3076 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3077 return;
3078 } else if (trans_seq_no == 0x0004) {
3079 should_associate = 1;
3080 }
3081 }
3082
3083 if (should_associate) {
3084 if (priv->station_was_associated) {
3085 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3086 send_association_request(priv, 1);
3087 return;
3088 } else {
3089 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3090 send_association_request(priv, 0);
3091 return;
3092 }
3093 }
3094 }
3095
3096 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3097 /* Flip back and forth between WEP auth modes until the max
3098 * authentication tries has been exceeded.
3099 */
3100 if (system == WLAN_AUTH_OPEN) {
3101 priv->CurrentAuthentTransactionSeqNum = 0x001;
3102 priv->exclude_unencrypted = 1;
3103 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3104 return;
3105 } else if (system == WLAN_AUTH_SHARED_KEY
3106 && priv->wep_is_on) {
3107 priv->CurrentAuthentTransactionSeqNum = 0x001;
3108 priv->exclude_unencrypted = 0;
3109 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3110 return;
3111 } else if (priv->connect_to_any_BSS) {
3112 int bss_index;
3113
3114 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3115
3116 if ((bss_index = retrieve_bss(priv)) != -1) {
3117 atmel_join_bss(priv, bss_index);
3118 return;
3119 }
3120 }
3121 }
3122
3123 priv->AuthenticationRequestRetryCnt = 0;
3124 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3125 priv->station_is_associated = 0;
3126}
3127
3128static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3129{
3130 struct ass_resp_format {
3131 __le16 capability;
3132 __le16 status;
3133 __le16 ass_id;
3134 u8 el_id;
3135 u8 length;
3136 u8 rates[4];
3137 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3138
3139 u16 status = le16_to_cpu(ass_resp->status);
3140 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3141 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3142
3143 union iwreq_data wrqu;
3144
3145 if (frame_len < 8 + rates_len)
3146 return;
3147
3148 if (status == WLAN_STATUS_SUCCESS) {
3149 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3150 priv->AssociationRequestRetryCnt = 0;
3151 else
3152 priv->ReAssociationRequestRetryCnt = 0;
3153
3154 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3155 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3156 atmel_set_mib(priv, Phy_Mib_Type,
3157 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3158 if (priv->power_mode == 0) {
3159 priv->listen_interval = 1;
3160 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3161 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3162 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3163 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3164 } else {
3165 priv->listen_interval = 2;
3166 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3167 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3168 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3169 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3170 }
3171
3172 priv->station_is_associated = 1;
3173 priv->station_was_associated = 1;
3174 atmel_enter_state(priv, STATION_STATE_READY);
3175
3176 /* Send association event to userspace */
3177 wrqu.data.length = 0;
3178 wrqu.data.flags = 0;
3179 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3180 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3181 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3182
3183 return;
3184 }
3185
3186 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3187 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3188 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3189 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3190 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3191 priv->AssociationRequestRetryCnt++;
3192 send_association_request(priv, 0);
3193 return;
3194 }
3195
3196 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3197 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3198 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3199 priv->ReAssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3200 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3201 priv->ReAssociationRequestRetryCnt++;
3202 send_association_request(priv, 1);
3203 return;
3204 }
3205
3206 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3207 priv->station_is_associated = 0;
3208
3209 if (priv->connect_to_any_BSS) {
3210 int bss_index;
3211 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3212
3213 if ((bss_index = retrieve_bss(priv)) != -1)
3214 atmel_join_bss(priv, bss_index);
3215 }
3216}
3217
3218static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3219{
3220 struct bss_info *bss = &priv->BSSinfo[bss_index];
3221
3222 memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN);
3223 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3224
3225 /* The WPA stuff cares about the current AP address */
3226 if (priv->use_wpa)
3227 build_wpa_mib(priv);
3228
3229 /* When switching to AdHoc turn OFF Power Save if needed */
3230
3231 if (bss->BSStype == IW_MODE_ADHOC &&
3232 priv->operating_mode != IW_MODE_ADHOC &&
3233 priv->power_mode) {
3234 priv->power_mode = 0;
3235 priv->listen_interval = 1;
3236 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3237 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3238 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3239 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3240 }
3241
3242 priv->operating_mode = bss->BSStype;
3243 priv->channel = bss->channel & 0x7f;
3244 priv->beacon_period = bss->beacon_period;
3245
3246 if (priv->preamble != bss->preamble) {
3247 priv->preamble = bss->preamble;
3248 atmel_set_mib8(priv, Local_Mib_Type,
3249 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3250 }
3251
3252 if (!priv->wep_is_on && bss->UsingWEP) {
3253 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3254 priv->station_is_associated = 0;
3255 return;
3256 }
3257
3258 if (priv->wep_is_on && !bss->UsingWEP) {
3259 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3260 priv->station_is_associated = 0;
3261 return;
3262 }
3263
3264 atmel_enter_state(priv, STATION_STATE_JOINNING);
3265
3266 if (priv->operating_mode == IW_MODE_INFRA)
3267 join(priv, BSS_TYPE_INFRASTRUCTURE);
3268 else
3269 join(priv, BSS_TYPE_AD_HOC);
3270}
3271
3272static void restart_search(struct atmel_private *priv)
3273{
3274 int bss_index;
3275
3276 if (!priv->connect_to_any_BSS) {
3277 atmel_scan(priv, 1);
3278 } else {
3279 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3280
3281 if ((bss_index = retrieve_bss(priv)) != -1)
3282 atmel_join_bss(priv, bss_index);
3283 else
3284 atmel_scan(priv, 0);
3285 }
3286}
3287
3288static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3289{
3290 u8 old = priv->wstats.qual.level;
3291 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3292
3293 switch (priv->firmware_type) {
3294 case ATMEL_FW_TYPE_502E:
3295 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3296 break;
3297 default:
3298 break;
3299 }
3300
3301 rssi = rssi * 100 / max_rssi;
3302 if ((rssi + old) % 2)
3303 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3304 else
3305 priv->wstats.qual.level = (rssi + old) / 2;
3306 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3307 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3308}
3309
3310static void atmel_smooth_qual(struct atmel_private *priv)
3311{
3312 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3313 while (time_diff--) {
3314 priv->last_qual += HZ;
3315 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3316 priv->wstats.qual.qual +=
3317 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3318 priv->beacons_this_sec = 0;
3319 }
3320 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3321 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3322}
3323
3324/* deals with incoming management frames. */
3325static void atmel_management_frame(struct atmel_private *priv,
3326 struct ieee80211_hdr *header,
3327 u16 frame_len, u8 rssi)
3328{
3329 u16 subtype;
3330
3331 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3332 switch (subtype) {
3333 case IEEE80211_STYPE_BEACON:
3334 case IEEE80211_STYPE_PROBE_RESP:
3335
3336 /* beacon frame has multiple variable-length fields -
3337 never let an engineer loose with a data structure design. */
3338 {
3339 struct beacon_format {
3340 __le64 timestamp;
3341 __le16 interval;
3342 __le16 capability;
3343 u8 ssid_el_id;
3344 u8 ssid_length;
3345 /* ssid here */
3346 u8 rates_el_id;
3347 u8 rates_length;
3348 /* rates here */
3349 u8 ds_el_id;
3350 u8 ds_length;
3351 /* ds here */
3352 } *beacon = (struct beacon_format *)priv->rx_buf;
3353
3354 u8 channel, rates_length, ssid_length;
3355 u64 timestamp = le64_to_cpu(beacon->timestamp);
3356 u16 beacon_interval = le16_to_cpu(beacon->interval);
3357 u16 capability = le16_to_cpu(beacon->capability);
3358 u8 *beaconp = priv->rx_buf;
3359 ssid_length = beacon->ssid_length;
3360 /* this blows chunks. */
3361 if (frame_len < 14 || frame_len < ssid_length + 15)
3362 return;
3363 rates_length = beaconp[beacon->ssid_length + 15];
3364 if (frame_len < ssid_length + rates_length + 18)
3365 return;
3366 if (ssid_length > MAX_SSID_LENGTH)
3367 return;
3368 channel = beaconp[ssid_length + rates_length + 18];
3369
3370 if (priv->station_state == STATION_STATE_READY) {
3371 smooth_rssi(priv, rssi);
3372 if (is_frame_from_current_bss(priv, header)) {
3373 priv->beacons_this_sec++;
3374 atmel_smooth_qual(priv);
3375 if (priv->last_beacon_timestamp) {
3376 /* Note truncate this to 32 bits - kernel can't divide a long long */
3377 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3378 int beacons = beacon_delay / (beacon_interval * 1000);
3379 if (beacons > 1)
3380 priv->wstats.miss.beacon += beacons - 1;
3381 }
3382 priv->last_beacon_timestamp = timestamp;
3383 handle_beacon_probe(priv, capability, channel);
3384 }
3385 }
3386
3387 if (priv->station_state == STATION_STATE_SCANNING)
3388 store_bss_info(priv, header, capability,
3389 beacon_interval, channel, rssi,
3390 ssid_length,
3391 &beacon->rates_el_id,
3392 subtype == IEEE80211_STYPE_BEACON);
3393 }
3394 break;
3395
3396 case IEEE80211_STYPE_AUTH:
3397
3398 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3399 authenticate(priv, frame_len);
3400
3401 break;
3402
3403 case IEEE80211_STYPE_ASSOC_RESP:
3404 case IEEE80211_STYPE_REASSOC_RESP:
3405
3406 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3407 priv->station_state == STATION_STATE_REASSOCIATING)
3408 associate(priv, frame_len, subtype);
3409
3410 break;
3411
3412 case IEEE80211_STYPE_DISASSOC:
3413 if (priv->station_is_associated &&
3414 priv->operating_mode == IW_MODE_INFRA &&
3415 is_frame_from_current_bss(priv, header)) {
3416 priv->station_was_associated = 0;
3417 priv->station_is_associated = 0;
3418
3419 atmel_enter_state(priv, STATION_STATE_JOINNING);
3420 join(priv, BSS_TYPE_INFRASTRUCTURE);
3421 }
3422
3423 break;
3424
3425 case IEEE80211_STYPE_DEAUTH:
3426 if (priv->operating_mode == IW_MODE_INFRA &&
3427 is_frame_from_current_bss(priv, header)) {
3428 priv->station_was_associated = 0;
3429
3430 atmel_enter_state(priv, STATION_STATE_JOINNING);
3431 join(priv, BSS_TYPE_INFRASTRUCTURE);
3432 }
3433
3434 break;
3435 }
3436}
3437
3438/* run when timer expires */
3439static void atmel_management_timer(u_long a)
3440{
3441 struct net_device *dev = (struct net_device *) a;
3442 struct atmel_private *priv = netdev_priv(dev);
3443 unsigned long flags;
3444
3445 /* Check if the card has been yanked. */
3446 if (priv->card && priv->present_callback &&
3447 !(*priv->present_callback)(priv->card))
3448 return;
3449
3450 spin_lock_irqsave(&priv->irqlock, flags);
3451
3452 switch (priv->station_state) {
3453
3454 case STATION_STATE_AUTHENTICATING:
3455 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3456 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3457 priv->station_is_associated = 0;
3458 priv->AuthenticationRequestRetryCnt = 0;
3459 restart_search(priv);
3460 } else {
3461 int auth = WLAN_AUTH_OPEN;
3462 priv->AuthenticationRequestRetryCnt++;
3463 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3464 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3465 if (priv->wep_is_on && priv->exclude_unencrypted)
3466 auth = WLAN_AUTH_SHARED_KEY;
3467 send_authentication_request(priv, auth, NULL, 0);
3468 }
3469 break;
3470
3471 case STATION_STATE_ASSOCIATING:
3472 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3473 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3474 priv->station_is_associated = 0;
3475 priv->AssociationRequestRetryCnt = 0;
3476 restart_search(priv);
3477 } else {
3478 priv->AssociationRequestRetryCnt++;
3479 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3480 send_association_request(priv, 0);
3481 }
3482 break;
3483
3484 case STATION_STATE_REASSOCIATING:
3485 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3486 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3487 priv->station_is_associated = 0;
3488 priv->ReAssociationRequestRetryCnt = 0;
3489 restart_search(priv);
3490 } else {
3491 priv->ReAssociationRequestRetryCnt++;
3492 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3493 send_association_request(priv, 1);
3494 }
3495 break;
3496
3497 default:
3498 break;
3499 }
3500
3501 spin_unlock_irqrestore(&priv->irqlock, flags);
3502}
3503
3504static void atmel_command_irq(struct atmel_private *priv)
3505{
3506 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3507 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3508 int fast_scan;
3509 union iwreq_data wrqu;
3510
3511 if (status == CMD_STATUS_IDLE ||
3512 status == CMD_STATUS_IN_PROGRESS)
3513 return;
3514
3515 switch (command) {
3516 case CMD_Start:
3517 if (status == CMD_STATUS_COMPLETE) {
3518 priv->station_was_associated = priv->station_is_associated;
3519 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3520 (u8 *)priv->CurrentBSSID, 6);
3521 atmel_enter_state(priv, STATION_STATE_READY);
3522 }
3523 break;
3524
3525 case CMD_Scan:
3526 fast_scan = priv->fast_scan;
3527 priv->fast_scan = 0;
3528
3529 if (status != CMD_STATUS_COMPLETE) {
3530 atmel_scan(priv, 1);
3531 } else {
3532 int bss_index = retrieve_bss(priv);
3533 int notify_scan_complete = 1;
3534 if (bss_index != -1) {
3535 atmel_join_bss(priv, bss_index);
3536 } else if (priv->operating_mode == IW_MODE_ADHOC &&
3537 priv->SSID_size != 0) {
3538 start(priv, BSS_TYPE_AD_HOC);
3539 } else {
3540 priv->fast_scan = !fast_scan;
3541 atmel_scan(priv, 1);
3542 notify_scan_complete = 0;
3543 }
3544 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3545 if (notify_scan_complete) {
3546 wrqu.data.length = 0;
3547 wrqu.data.flags = 0;
3548 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3549 }
3550 }
3551 break;
3552
3553 case CMD_SiteSurvey:
3554 priv->fast_scan = 0;
3555
3556 if (status != CMD_STATUS_COMPLETE)
3557 return;
3558
3559 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3560 if (priv->station_is_associated) {
3561 atmel_enter_state(priv, STATION_STATE_READY);
3562 wrqu.data.length = 0;
3563 wrqu.data.flags = 0;
3564 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3565 } else {
3566 atmel_scan(priv, 1);
3567 }
3568 break;
3569
3570 case CMD_Join:
3571 if (status == CMD_STATUS_COMPLETE) {
3572 if (priv->operating_mode == IW_MODE_ADHOC) {
3573 priv->station_was_associated = priv->station_is_associated;
3574 atmel_enter_state(priv, STATION_STATE_READY);
3575 } else {
3576 int auth = WLAN_AUTH_OPEN;
3577 priv->AuthenticationRequestRetryCnt = 0;
3578 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3579
3580 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3581 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3582 if (priv->wep_is_on && priv->exclude_unencrypted)
3583 auth = WLAN_AUTH_SHARED_KEY;
3584 send_authentication_request(priv, auth, NULL, 0);
3585 }
3586 return;
3587 }
3588
3589 atmel_scan(priv, 1);
3590 }
3591}
3592
3593static int atmel_wakeup_firmware(struct atmel_private *priv)
3594{
3595 struct host_info_struct *iface = &priv->host_info;
3596 u16 mr1, mr3;
3597 int i;
3598
3599 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3600 atmel_set_gcr(priv->dev, GCR_REMAP);
3601
3602 /* wake up on-board processor */
3603 atmel_clear_gcr(priv->dev, 0x0040);
3604 atmel_write16(priv->dev, BSR, BSS_SRAM);
3605
3606 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3607 mdelay(100);
3608
3609 /* and wait for it */
3610 for (i = LOOP_RETRY_LIMIT; i; i--) {
3611 mr1 = atmel_read16(priv->dev, MR1);
3612 mr3 = atmel_read16(priv->dev, MR3);
3613
3614 if (mr3 & MAC_BOOT_COMPLETE)
3615 break;
3616 if (mr1 & MAC_BOOT_COMPLETE &&
3617 priv->bus_type == BUS_TYPE_PCCARD)
3618 break;
3619 }
3620
3621 if (i == 0) {
3622 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3623 return -EIO;
3624 }
3625
3626 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3627 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3628 return -ENODEV;
3629 }
3630
3631 /* now check for completion of MAC initialization through
3632 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3633 MAC initialization, check completion status, set interrupt mask,
3634 enables interrupts and calls Tx and Rx initialization functions */
3635
3636 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3637
3638 for (i = LOOP_RETRY_LIMIT; i; i--) {
3639 mr1 = atmel_read16(priv->dev, MR1);
3640 mr3 = atmel_read16(priv->dev, MR3);
3641
3642 if (mr3 & MAC_INIT_COMPLETE)
3643 break;
3644 if (mr1 & MAC_INIT_COMPLETE &&
3645 priv->bus_type == BUS_TYPE_PCCARD)
3646 break;
3647 }
3648
3649 if (i == 0) {
3650 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3651 priv->dev->name);
3652 return -EIO;
3653 }
3654
3655 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3656 if ((mr3 & MAC_INIT_COMPLETE) &&
3657 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3658 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3659 return -EIO;
3660 }
3661 if ((mr1 & MAC_INIT_COMPLETE) &&
3662 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3663 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3664 return -EIO;
3665 }
3666
3667 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3668 priv->host_info_base, sizeof(*iface));
3669
3670 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3671 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3672 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3673 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3674 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3675 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3676 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3677 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3678 iface->build_version = le16_to_cpu(iface->build_version);
3679 iface->command_pos = le16_to_cpu(iface->command_pos);
3680 iface->major_version = le16_to_cpu(iface->major_version);
3681 iface->minor_version = le16_to_cpu(iface->minor_version);
3682 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3683 iface->mac_status = le16_to_cpu(iface->mac_status);
3684
3685 return 0;
3686}
3687
3688/* determine type of memory and MAC address */
3689static int probe_atmel_card(struct net_device *dev)
3690{
3691 int rc = 0;
3692 struct atmel_private *priv = netdev_priv(dev);
3693
3694 /* reset pccard */
3695 if (priv->bus_type == BUS_TYPE_PCCARD)
3696 atmel_write16(dev, GCR, 0x0060);
3697
3698 atmel_write16(dev, GCR, 0x0040);
3699 mdelay(500);
3700
3701 if (atmel_read16(dev, MR2) == 0) {
3702 /* No stored firmware so load a small stub which just
3703 tells us the MAC address */
3704 int i;
3705 priv->card_type = CARD_TYPE_EEPROM;
3706 atmel_write16(dev, BSR, BSS_IRAM);
3707 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3708 atmel_set_gcr(dev, GCR_REMAP);
3709 atmel_clear_gcr(priv->dev, 0x0040);
3710 atmel_write16(dev, BSR, BSS_SRAM);
3711 for (i = LOOP_RETRY_LIMIT; i; i--)
3712 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3713 break;
3714 if (i == 0) {
3715 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3716 } else {
3717 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3718 /* got address, now squash it again until the network
3719 interface is opened */
3720 if (priv->bus_type == BUS_TYPE_PCCARD)
3721 atmel_write16(dev, GCR, 0x0060);
3722 atmel_write16(dev, GCR, 0x0040);
3723 rc = 1;
3724 }
3725 } else if (atmel_read16(dev, MR4) == 0) {
3726 /* Mac address easy in this case. */
3727 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3728 atmel_write16(dev, BSR, 1);
3729 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3730 atmel_write16(dev, BSR, 0x200);
3731 rc = 1;
3732 } else {
3733 /* Standard firmware in flash, boot it up and ask
3734 for the Mac Address */
3735 priv->card_type = CARD_TYPE_SPI_FLASH;
3736 if (atmel_wakeup_firmware(priv) == 0) {
3737 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3738
3739 /* got address, now squash it again until the network
3740 interface is opened */
3741 if (priv->bus_type == BUS_TYPE_PCCARD)
3742 atmel_write16(dev, GCR, 0x0060);
3743 atmel_write16(dev, GCR, 0x0040);
3744 rc = 1;
3745 }
3746 }
3747
3748 if (rc) {
3749 if (dev->dev_addr[0] == 0xFF) {
3750 static const u8 default_mac[] = {
3751 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3752 };
3753 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3754 memcpy(dev->dev_addr, default_mac, ETH_ALEN);
3755 }
3756 }
3757
3758 return rc;
3759}
3760
3761/* Move the encyption information on the MIB structure.
3762 This routine is for the pre-WPA firmware: later firmware has
3763 a different format MIB and a different routine. */
3764static void build_wep_mib(struct atmel_private *priv)
3765{
3766 struct { /* NB this is matched to the hardware, don't change. */
3767 u8 wep_is_on;
3768 u8 default_key; /* 0..3 */
3769 u8 reserved;
3770 u8 exclude_unencrypted;
3771
3772 u32 WEPICV_error_count;
3773 u32 WEP_excluded_count;
3774
3775 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3776 u8 encryption_level; /* 0, 1, 2 */
3777 u8 reserved2[3];
3778 } mib;
3779 int i;
3780
3781 mib.wep_is_on = priv->wep_is_on;
3782 if (priv->wep_is_on) {
3783 if (priv->wep_key_len[priv->default_key] > 5)
3784 mib.encryption_level = 2;
3785 else
3786 mib.encryption_level = 1;
3787 } else {
3788 mib.encryption_level = 0;
3789 }
3790
3791 mib.default_key = priv->default_key;
3792 mib.exclude_unencrypted = priv->exclude_unencrypted;
3793
3794 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3795 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3796
3797 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3798}
3799
3800static void build_wpa_mib(struct atmel_private *priv)
3801{
3802 /* This is for the later (WPA enabled) firmware. */
3803
3804 struct { /* NB this is matched to the hardware, don't change. */
3805 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3806 u8 receiver_address[ETH_ALEN];
3807 u8 wep_is_on;
3808 u8 default_key; /* 0..3 */
3809 u8 group_key;
3810 u8 exclude_unencrypted;
3811 u8 encryption_type;
3812 u8 reserved;
3813
3814 u32 WEPICV_error_count;
3815 u32 WEP_excluded_count;
3816
3817 u8 key_RSC[4][8];
3818 } mib;
3819
3820 int i;
3821
3822 mib.wep_is_on = priv->wep_is_on;
3823 mib.exclude_unencrypted = priv->exclude_unencrypted;
3824 memcpy(mib.receiver_address, priv->CurrentBSSID, ETH_ALEN);
3825
3826 /* zero all the keys before adding in valid ones. */
3827 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3828
3829 if (priv->wep_is_on) {
3830 /* There's a comment in the Atmel code to the effect that this
3831 is only valid when still using WEP, it may need to be set to
3832 something to use WPA */
3833 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3834
3835 mib.default_key = mib.group_key = 255;
3836 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3837 if (priv->wep_key_len[i] > 0) {
3838 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3839 if (i == priv->default_key) {
3840 mib.default_key = i;
3841 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3842 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3843 } else {
3844 mib.group_key = i;
3845 priv->group_cipher_suite = priv->pairwise_cipher_suite;
3846 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3847 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3848 }
3849 }
3850 }
3851 if (mib.default_key == 255)
3852 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3853 if (mib.group_key == 255)
3854 mib.group_key = mib.default_key;
3855
3856 }
3857
3858 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3859}
3860
3861static int reset_atmel_card(struct net_device *dev)
3862{
3863 /* do everything necessary to wake up the hardware, including
3864 waiting for the lightning strike and throwing the knife switch....
3865
3866 set all the Mib values which matter in the card to match
3867 their settings in the atmel_private structure. Some of these
3868 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3869 can only be changed by tearing down the world and coming back through
3870 here.
3871
3872 This routine is also responsible for initialising some
3873 hardware-specific fields in the atmel_private structure,
3874 including a copy of the firmware's hostinfo structure
3875 which is the route into the rest of the firmware datastructures. */
3876
3877 struct atmel_private *priv = netdev_priv(dev);
3878 u8 configuration;
3879 int old_state = priv->station_state;
3880 int err = 0;
3881
3882 /* data to add to the firmware names, in priority order
3883 this implemenents firmware versioning */
3884
3885 static char *firmware_modifier[] = {
3886 "-wpa",
3887 "",
3888 NULL
3889 };
3890
3891 /* reset pccard */
3892 if (priv->bus_type == BUS_TYPE_PCCARD)
3893 atmel_write16(priv->dev, GCR, 0x0060);
3894
3895 /* stop card , disable interrupts */
3896 atmel_write16(priv->dev, GCR, 0x0040);
3897
3898 if (priv->card_type == CARD_TYPE_EEPROM) {
3899 /* copy in firmware if needed */
3900 const struct firmware *fw_entry = NULL;
3901 const unsigned char *fw;
3902 int len = priv->firmware_length;
3903 if (!(fw = priv->firmware)) {
3904 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3905 if (strlen(priv->firmware_id) == 0) {
3906 printk(KERN_INFO
3907 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3908 dev->name);
3909 printk(KERN_INFO
3910 "%s: if not, use the firmware= module parameter.\n",
3911 dev->name);
3912 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3913 }
3914 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3915 if (err != 0) {
3916 printk(KERN_ALERT
3917 "%s: firmware %s is missing, cannot continue.\n",
3918 dev->name, priv->firmware_id);
3919 return err;
3920 }
3921 } else {
3922 int fw_index = 0;
3923 int success = 0;
3924
3925 /* get firmware filename entry based on firmware type ID */
3926 while (fw_table[fw_index].fw_type != priv->firmware_type
3927 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3928 fw_index++;
3929
3930 /* construct the actual firmware file name */
3931 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3932 int i;
3933 for (i = 0; firmware_modifier[i]; i++) {
3934 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3935 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3936 priv->firmware_id[31] = '\0';
3937 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3938 success = 1;
3939 break;
3940 }
3941 }
3942 }
3943 if (!success) {
3944 printk(KERN_ALERT
3945 "%s: firmware %s is missing, cannot start.\n",
3946 dev->name, priv->firmware_id);
3947 priv->firmware_id[0] = '\0';
3948 return -ENOENT;
3949 }
3950 }
3951
3952 fw = fw_entry->data;
3953 len = fw_entry->size;
3954 }
3955
3956 if (len <= 0x6000) {
3957 atmel_write16(priv->dev, BSR, BSS_IRAM);
3958 atmel_copy_to_card(priv->dev, 0, fw, len);
3959 atmel_set_gcr(priv->dev, GCR_REMAP);
3960 } else {
3961 /* Remap */
3962 atmel_set_gcr(priv->dev, GCR_REMAP);
3963 atmel_write16(priv->dev, BSR, BSS_IRAM);
3964 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3965 atmel_write16(priv->dev, BSR, 0x2ff);
3966 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3967 }
3968
3969 release_firmware(fw_entry);
3970 }
3971
3972 err = atmel_wakeup_firmware(priv);
3973 if (err != 0)
3974 return err;
3975
3976 /* Check the version and set the correct flag for wpa stuff,
3977 old and new firmware is incompatible.
3978 The pre-wpa 3com firmware reports major version 5,
3979 the wpa 3com firmware is major version 4 and doesn't need
3980 the 3com broken-ness filter. */
3981 priv->use_wpa = (priv->host_info.major_version == 4);
3982 priv->radio_on_broken = (priv->host_info.major_version == 5);
3983
3984 /* unmask all irq sources */
3985 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
3986
3987 /* int Tx system and enable Tx */
3988 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
3989 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
3990 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
3991 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
3992
3993 priv->tx_desc_free = priv->host_info.tx_desc_count;
3994 priv->tx_desc_head = 0;
3995 priv->tx_desc_tail = 0;
3996 priv->tx_desc_previous = 0;
3997 priv->tx_free_mem = priv->host_info.tx_buff_size;
3998 priv->tx_buff_head = 0;
3999 priv->tx_buff_tail = 0;
4000
4001 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4002 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4003 configuration | FUNC_CTRL_TxENABLE);
4004
4005 /* init Rx system and enable */
4006 priv->rx_desc_head = 0;
4007
4008 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4009 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4010 configuration | FUNC_CTRL_RxENABLE);
4011
4012 if (!priv->radio_on_broken) {
4013 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4014 CMD_STATUS_REJECTED_RADIO_OFF) {
4015 printk(KERN_INFO "%s: cannot turn the radio on.\n",
4016 dev->name);
4017 return -EIO;
4018 }
4019 }
4020
4021 /* set up enough MIB values to run. */
4022 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4023 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4024 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4025 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4026 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4027 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4028 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4029 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4030 priv->dev->dev_addr, 6);
4031 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4032 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4033 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4034 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4035 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4036 if (priv->use_wpa)
4037 build_wpa_mib(priv);
4038 else
4039 build_wep_mib(priv);
4040
4041 if (old_state == STATION_STATE_READY) {
4042 union iwreq_data wrqu;
4043
4044 wrqu.data.length = 0;
4045 wrqu.data.flags = 0;
4046 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4047 eth_zero_addr(wrqu.ap_addr.sa_data);
4048 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4049 }
4050
4051 return 0;
4052}
4053
4054static void atmel_send_command(struct atmel_private *priv, int command,
4055 void *cmd, int cmd_size)
4056{
4057 if (cmd)
4058 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4059 cmd, cmd_size);
4060
4061 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4062 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4063}
4064
4065static int atmel_send_command_wait(struct atmel_private *priv, int command,
4066 void *cmd, int cmd_size)
4067{
4068 int i, status;
4069
4070 atmel_send_command(priv, command, cmd, cmd_size);
4071
4072 for (i = 5000; i; i--) {
4073 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4074 if (status != CMD_STATUS_IDLE &&
4075 status != CMD_STATUS_IN_PROGRESS)
4076 break;
4077 udelay(20);
4078 }
4079
4080 if (i == 0) {
4081 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4082 status = CMD_STATUS_HOST_ERROR;
4083 } else {
4084 if (command != CMD_EnableRadio)
4085 status = CMD_STATUS_COMPLETE;
4086 }
4087
4088 return status;
4089}
4090
4091static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4092{
4093 struct get_set_mib m;
4094 m.type = type;
4095 m.size = 1;
4096 m.index = index;
4097
4098 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4099 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4100}
4101
4102static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4103{
4104 struct get_set_mib m;
4105 m.type = type;
4106 m.size = 1;
4107 m.index = index;
4108 m.data[0] = data;
4109
4110 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4111}
4112
4113static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4114 u16 data)
4115{
4116 struct get_set_mib m;
4117 m.type = type;
4118 m.size = 2;
4119 m.index = index;
4120 m.data[0] = data;
4121 m.data[1] = data >> 8;
4122
4123 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4124}
4125
4126static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4127 u8 *data, int data_len)
4128{
4129 struct get_set_mib m;
4130 m.type = type;
4131 m.size = data_len;
4132 m.index = index;
4133
4134 if (data_len > MIB_MAX_DATA_BYTES)
4135 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4136
4137 memcpy(m.data, data, data_len);
4138 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4139}
4140
4141static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4142 u8 *data, int data_len)
4143{
4144 struct get_set_mib m;
4145 m.type = type;
4146 m.size = data_len;
4147 m.index = index;
4148
4149 if (data_len > MIB_MAX_DATA_BYTES)
4150 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4151
4152 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4153 atmel_copy_to_host(priv->dev, data,
4154 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4155}
4156
4157static void atmel_writeAR(struct net_device *dev, u16 data)
4158{
4159 int i;
4160 outw(data, dev->base_addr + AR);
4161 /* Address register appears to need some convincing..... */
4162 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4163 outw(data, dev->base_addr + AR);
4164}
4165
4166static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4167 const unsigned char *src, u16 len)
4168{
4169 int i;
4170 atmel_writeAR(dev, dest);
4171 if (dest % 2) {
4172 atmel_write8(dev, DR, *src);
4173 src++; len--;
4174 }
4175 for (i = len; i > 1 ; i -= 2) {
4176 u8 lb = *src++;
4177 u8 hb = *src++;
4178 atmel_write16(dev, DR, lb | (hb << 8));
4179 }
4180 if (i)
4181 atmel_write8(dev, DR, *src);
4182}
4183
4184static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4185 u16 src, u16 len)
4186{
4187 int i;
4188 atmel_writeAR(dev, src);
4189 if (src % 2) {
4190 *dest = atmel_read8(dev, DR);
4191 dest++; len--;
4192 }
4193 for (i = len; i > 1 ; i -= 2) {
4194 u16 hw = atmel_read16(dev, DR);
4195 *dest++ = hw;
4196 *dest++ = hw >> 8;
4197 }
4198 if (i)
4199 *dest = atmel_read8(dev, DR);
4200}
4201
4202static void atmel_set_gcr(struct net_device *dev, u16 mask)
4203{
4204 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4205}
4206
4207static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4208{
4209 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4210}
4211
4212static int atmel_lock_mac(struct atmel_private *priv)
4213{
4214 int i, j = 20;
4215 retry:
4216 for (i = 5000; i; i--) {
4217 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4218 break;
4219 udelay(20);
4220 }
4221
4222 if (!i)
4223 return 0; /* timed out */
4224
4225 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4226 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4227 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4228 if (!j--)
4229 return 0; /* timed out */
4230 goto retry;
4231 }
4232
4233 return 1;
4234}
4235
4236static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4237{
4238 atmel_writeAR(priv->dev, pos);
4239 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4240 atmel_write16(priv->dev, DR, data >> 16);
4241}
4242
4243/***************************************************************************/
4244/* There follows the source form of the MAC address reading firmware */
4245/***************************************************************************/
4246#if 0
4247
4248/* Copyright 2003 Matthew T. Russotto */
4249/* But derived from the Atmel 76C502 firmware written by Atmel and */
4250/* included in "atmel wireless lan drivers" package */
4251/**
4252 This file is part of net.russotto.AtmelMACFW, hereto referred to
4253 as AtmelMACFW
4254
4255 AtmelMACFW is free software; you can redistribute it and/or modify
4256 it under the terms of the GNU General Public License version 2
4257 as published by the Free Software Foundation.
4258
4259 AtmelMACFW is distributed in the hope that it will be useful,
4260 but WITHOUT ANY WARRANTY; without even the implied warranty of
4261 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4262 GNU General Public License for more details.
4263
4264 You should have received a copy of the GNU General Public License
4265 along with AtmelMACFW; if not, see <http://www.gnu.org/licenses/>.
4266
4267****************************************************************************/
4268/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4269/* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4270/* It only works on SPI EEPROM versions of the card. */
4271
4272/* This firmware initializes the SPI controller and clock, reads the MAC */
4273/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4274/* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4275/* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4276/* MR4, for investigational purposes (maybe we can determine chip type */
4277/* from that?) */
4278
4279 .org 0
4280 .set MRBASE, 0x8000000
4281 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4282 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4283 .set SRAM_BASE, 0x02000000
4284 .set SP_BASE, 0x0F300000
4285 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4286 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4287 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4288 .set STACK_BASE, 0x5600
4289 .set SP_SR, 0x10
4290 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4291 .set SP_RDRF, 1 /* status register bit -- RDR full */
4292 .set SP_SWRST, 0x80
4293 .set SP_SPIEN, 0x1
4294 .set SP_CR, 0 /* control register */
4295 .set SP_MR, 4 /* mode register */
4296 .set SP_RDR, 0x08 /* Read Data Register */
4297 .set SP_TDR, 0x0C /* Transmit Data Register */
4298 .set SP_CSR0, 0x30 /* chip select registers */
4299 .set SP_CSR1, 0x34
4300 .set SP_CSR2, 0x38
4301 .set SP_CSR3, 0x3C
4302 .set NVRAM_CMD_RDSR, 5 /* read status register */
4303 .set NVRAM_CMD_READ, 3 /* read data */
4304 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4305 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4306 serial output, since SO is normally high. But it
4307 does cause 8 clock cycles and thus 8 bits to be
4308 clocked in to the chip. See Atmel's SPI
4309 controller (e.g. AT91M55800) timing and 4K
4310 SPI EEPROM manuals */
4311
4312 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4313 .set NVRAM_IMAGE, 0x02000200
4314 .set NVRAM_LENGTH, 0x0200
4315 .set MAC_ADDRESS_MIB, SRAM_BASE
4316 .set MAC_ADDRESS_LENGTH, 6
4317 .set MAC_BOOT_FLAG, 0x10
4318 .set MR1, 0
4319 .set MR2, 4
4320 .set MR3, 8
4321 .set MR4, 0xC
4322RESET_VECTOR:
4323 b RESET_HANDLER
4324UNDEF_VECTOR:
4325 b HALT1
4326SWI_VECTOR:
4327 b HALT1
4328IABORT_VECTOR:
4329 b HALT1
4330DABORT_VECTOR:
4331RESERVED_VECTOR:
4332 b HALT1
4333IRQ_VECTOR:
4334 b HALT1
4335FIQ_VECTOR:
4336 b HALT1
4337HALT1: b HALT1
4338RESET_HANDLER:
4339 mov r0, #CPSR_INITIAL
4340 msr CPSR_c, r0 /* This is probably unnecessary */
4341
4342/* I'm guessing this is initializing clock generator electronics for SPI */
4343 ldr r0, =SPI_CGEN_BASE
4344 mov r1, #0
4345 mov r1, r1, lsl #3
4346 orr r1, r1, #0
4347 str r1, [r0]
4348 ldr r1, [r0, #28]
4349 bic r1, r1, #16
4350 str r1, [r0, #28]
4351 mov r1, #1
4352 str r1, [r0, #8]
4353
4354 ldr r0, =MRBASE
4355 mov r1, #0
4356 strh r1, [r0, #MR1]
4357 strh r1, [r0, #MR2]
4358 strh r1, [r0, #MR3]
4359 strh r1, [r0, #MR4]
4360
4361 mov sp, #STACK_BASE
4362 bl SP_INIT
4363 mov r0, #10
4364 bl DELAY9
4365 bl GET_MAC_ADDR
4366 bl GET_WHOLE_NVRAM
4367 ldr r0, =MRBASE
4368 ldr r1, =MAC_ADDRESS_MIB
4369 strh r1, [r0, #MR2]
4370 ldr r1, =NVRAM_IMAGE
4371 strh r1, [r0, #MR4]
4372 mov r1, #MAC_BOOT_FLAG
4373 strh r1, [r0, #MR3]
4374HALT2: b HALT2
4375.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4376GET_WHOLE_NVRAM:
4377 stmdb sp!, {lr}
4378 mov r2, #0 /* 0th bytes of NVRAM */
4379 mov r3, #NVRAM_LENGTH
4380 mov r1, #0 /* not used in routine */
4381 ldr r0, =NVRAM_IMAGE
4382 bl NVRAM_XFER
4383 ldmia sp!, {lr}
4384 bx lr
4385.endfunc
4386
4387.func Get_MAC_Addr, GET_MAC_ADDR
4388GET_MAC_ADDR:
4389 stmdb sp!, {lr}
4390 mov r2, #0x120 /* address of MAC Address within NVRAM */
4391 mov r3, #MAC_ADDRESS_LENGTH
4392 mov r1, #0 /* not used in routine */
4393 ldr r0, =MAC_ADDRESS_MIB
4394 bl NVRAM_XFER
4395 ldmia sp!, {lr}
4396 bx lr
4397.endfunc
4398.ltorg
4399.func Delay9, DELAY9
4400DELAY9:
4401 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
4402DELAYLOOP:
4403 beq DELAY9_done
4404 subs r0, r0, #1
4405 b DELAYLOOP
4406DELAY9_done:
4407 bx lr
4408.endfunc
4409
4410.func SP_Init, SP_INIT
4411SP_INIT:
4412 mov r1, #SP_SWRST
4413 ldr r0, =SP_BASE
4414 str r1, [r0, #SP_CR] /* reset the SPI */
4415 mov r1, #0
4416 str r1, [r0, #SP_CR] /* release SPI from reset state */
4417 mov r1, #SP_SPIEN
4418 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4419 str r1, [r0, #SP_CR] /* enable the SPI */
4420
4421/* My guess would be this turns on the SPI clock */
4422 ldr r3, =SPI_CGEN_BASE
4423 ldr r1, [r3, #28]
4424 orr r1, r1, #0x2000
4425 str r1, [r3, #28]
4426
4427 ldr r1, =0x2000c01
4428 str r1, [r0, #SP_CSR0]
4429 ldr r1, =0x2000201
4430 str r1, [r0, #SP_CSR1]
4431 str r1, [r0, #SP_CSR2]
4432 str r1, [r0, #SP_CSR3]
4433 ldr r1, [r0, #SP_SR]
4434 ldr r0, [r0, #SP_RDR]
4435 bx lr
4436.endfunc
4437.func NVRAM_Init, NVRAM_INIT
4438NVRAM_INIT:
4439 ldr r1, =SP_BASE
4440 ldr r0, [r1, #SP_RDR]
4441 mov r0, #NVRAM_CMD_RDSR
4442 str r0, [r1, #SP_TDR]
4443SP_loop1:
4444 ldr r0, [r1, #SP_SR]
4445 tst r0, #SP_TDRE
4446 beq SP_loop1
4447
4448 mov r0, #SPI_8CLOCKS
4449 str r0, [r1, #SP_TDR]
4450SP_loop2:
4451 ldr r0, [r1, #SP_SR]
4452 tst r0, #SP_TDRE
4453 beq SP_loop2
4454
4455 ldr r0, [r1, #SP_RDR]
4456SP_loop3:
4457 ldr r0, [r1, #SP_SR]
4458 tst r0, #SP_RDRF
4459 beq SP_loop3
4460
4461 ldr r0, [r1, #SP_RDR]
4462 and r0, r0, #255
4463 bx lr
4464.endfunc
4465
4466.func NVRAM_Xfer, NVRAM_XFER
4467 /* r0 = dest address */
4468 /* r1 = not used */
4469 /* r2 = src address within NVRAM */
4470 /* r3 = length */
4471NVRAM_XFER:
4472 stmdb sp!, {r4, r5, lr}
4473 mov r5, r0 /* save r0 (dest address) */
4474 mov r4, r3 /* save r3 (length) */
4475 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4476 and r0, r0, #8
4477 add r0, r0, #NVRAM_CMD_READ
4478 ldr r1, =NVRAM_SCRATCH
4479 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4480 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
4481_local1:
4482 bl NVRAM_INIT
4483 tst r0, #NVRAM_SR_RDY
4484 bne _local1
4485 mov r0, #20
4486 bl DELAY9
4487 mov r2, r4 /* length */
4488 mov r1, r5 /* dest address */
4489 mov r0, #2 /* bytes to transfer in command */
4490 bl NVRAM_XFER2
4491 ldmia sp!, {r4, r5, lr}
4492 bx lr
4493.endfunc
4494
4495.func NVRAM_Xfer2, NVRAM_XFER2
4496NVRAM_XFER2:
4497 stmdb sp!, {r4, r5, r6, lr}
4498 ldr r4, =SP_BASE
4499 mov r3, #0
4500 cmp r0, #0
4501 bls _local2
4502 ldr r5, =NVRAM_SCRATCH
4503_local4:
4504 ldrb r6, [r5, r3]
4505 str r6, [r4, #SP_TDR]
4506_local3:
4507 ldr r6, [r4, #SP_SR]
4508 tst r6, #SP_TDRE
4509 beq _local3
4510 add r3, r3, #1
4511 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4512 blo _local4
4513_local2:
4514 mov r3, #SPI_8CLOCKS
4515 str r3, [r4, #SP_TDR]
4516 ldr r0, [r4, #SP_RDR]
4517_local5:
4518 ldr r0, [r4, #SP_SR]
4519 tst r0, #SP_RDRF
4520 beq _local5
4521 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 */
4522 mov r0, #0
4523 cmp r2, #0 /* r2 is # of bytes to copy in */
4524 bls _local6
4525_local7:
4526 ldr r5, [r4, #SP_SR]
4527 tst r5, #SP_TDRE
4528 beq _local7
4529 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
4530_local8:
4531 ldr r5, [r4, #SP_SR]
4532 tst r5, #SP_RDRF
4533 beq _local8
4534 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4535 strb r5, [r1], #1 /* postindexed */
4536 add r0, r0, #1
4537 cmp r0, r2
4538 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4539_local6:
4540 mov r0, #200
4541 bl DELAY9
4542 ldmia sp!, {r4, r5, r6, lr}
4543 bx lr
4544#endif