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drivers/net: Remove alloc_etherdev error messages
[deliverable/linux.git] / drivers / net / wireless / atmel.c
1 /*** -*- linux-c -*- **********************************************************
2
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003-2004 Simon Kelley.
7
8 This code was developed from version 2.1.1 of the Atmel drivers,
9 released by Atmel corp. under the GPL in December 2002. It also
10 includes code from the Linux aironet drivers (C) Benjamin Reed,
11 and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
12 extensions, (C) Jean Tourrilhes.
13
14 The firmware module for reading the MAC address of the card comes from
15 net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
16 by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
17 This file contains the module in binary form and, under the terms
18 of the GPL, in source form. The source is located at the end of the file.
19
20 This program is free software; you can redistribute it and/or modify
21 it under the terms of the GNU General Public License as published by
22 the Free Software Foundation; either version 2 of the License, or
23 (at your option) any later version.
24
25 This software is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
29
30 You should have received a copy of the GNU General Public License
31 along with Atmel wireless lan drivers; if not, write to the Free Software
32 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33
34 For all queries about this code, please contact the current author,
35 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
36
37 Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
38 hardware used during development of this driver.
39
40 ******************************************************************************/
41
42 #include <linux/init.h>
43 #include <linux/interrupt.h>
44
45 #include <linux/kernel.h>
46 #include <linux/ptrace.h>
47 #include <linux/slab.h>
48 #include <linux/string.h>
49 #include <linux/ctype.h>
50 #include <linux/timer.h>
51 #include <asm/byteorder.h>
52 #include <asm/io.h>
53 #include <asm/system.h>
54 #include <asm/uaccess.h>
55 #include <linux/module.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/skbuff.h>
59 #include <linux/if_arp.h>
60 #include <linux/ioport.h>
61 #include <linux/fcntl.h>
62 #include <linux/delay.h>
63 #include <linux/wireless.h>
64 #include <net/iw_handler.h>
65 #include <linux/crc32.h>
66 #include <linux/proc_fs.h>
67 #include <linux/device.h>
68 #include <linux/moduleparam.h>
69 #include <linux/firmware.h>
70 #include <linux/jiffies.h>
71 #include <linux/ieee80211.h>
72 #include "atmel.h"
73
74 #define DRIVER_MAJOR 0
75 #define DRIVER_MINOR 98
76
77 MODULE_AUTHOR("Simon Kelley");
78 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
79 MODULE_LICENSE("GPL");
80 MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
81
82 /* The name of the firmware file to be loaded
83 over-rides any automatic selection */
84 static char *firmware = NULL;
85 module_param(firmware, charp, 0);
86
87 /* table of firmware file names */
88 static struct {
89 AtmelFWType fw_type;
90 const char *fw_file;
91 const char *fw_file_ext;
92 } fw_table[] = {
93 { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
94 { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
95 { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
96 { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
97 { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
98 { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
99 { ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" },
100 { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
101 { ATMEL_FW_TYPE_NONE, NULL, NULL }
102 };
103 MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
104 MODULE_FIRMWARE("atmel_at76c502.bin");
105 MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
106 MODULE_FIRMWARE("atmel_at76c502d.bin");
107 MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
108 MODULE_FIRMWARE("atmel_at76c502e.bin");
109 MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
110 MODULE_FIRMWARE("atmel_at76c502_3com.bin");
111 MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
112 MODULE_FIRMWARE("atmel_at76c504.bin");
113 MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
114 MODULE_FIRMWARE("atmel_at76c504_2958.bin");
115 MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
116 MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
117 MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
118 MODULE_FIRMWARE("atmel_at76c506.bin");
119
120 #define MAX_SSID_LENGTH 32
121 #define MGMT_JIFFIES (256 * HZ / 100)
122
123 #define MAX_BSS_ENTRIES 64
124
125 /* registers */
126 #define GCR 0x00 /* (SIR0) General Configuration Register */
127 #define BSR 0x02 /* (SIR1) Bank Switching Select Register */
128 #define AR 0x04
129 #define DR 0x08
130 #define MR1 0x12 /* Mirror Register 1 */
131 #define MR2 0x14 /* Mirror Register 2 */
132 #define MR3 0x16 /* Mirror Register 3 */
133 #define MR4 0x18 /* Mirror Register 4 */
134
135 #define GPR1 0x0c
136 #define GPR2 0x0e
137 #define GPR3 0x10
138 /*
139 * Constants for the GCR register.
140 */
141 #define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */
142 #define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */
143 #define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */
144 #define GCR_ENINT 0x0002 /* Enable Interrupts */
145 #define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */
146
147 #define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */
148 #define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */
149 /*
150 *Constants for the MR registers.
151 */
152 #define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */
153 #define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */
154 #define MAC_INIT_OK 0x0002 /* MAC boot has been completed */
155
156 #define MIB_MAX_DATA_BYTES 212
157 #define MIB_HEADER_SIZE 4 /* first four fields */
158
159 struct get_set_mib {
160 u8 type;
161 u8 size;
162 u8 index;
163 u8 reserved;
164 u8 data[MIB_MAX_DATA_BYTES];
165 };
166
167 struct rx_desc {
168 u32 Next;
169 u16 MsduPos;
170 u16 MsduSize;
171
172 u8 State;
173 u8 Status;
174 u8 Rate;
175 u8 Rssi;
176 u8 LinkQuality;
177 u8 PreambleType;
178 u16 Duration;
179 u32 RxTime;
180 };
181
182 #define RX_DESC_FLAG_VALID 0x80
183 #define RX_DESC_FLAG_CONSUMED 0x40
184 #define RX_DESC_FLAG_IDLE 0x00
185
186 #define RX_STATUS_SUCCESS 0x00
187
188 #define RX_DESC_MSDU_POS_OFFSET 4
189 #define RX_DESC_MSDU_SIZE_OFFSET 6
190 #define RX_DESC_FLAGS_OFFSET 8
191 #define RX_DESC_STATUS_OFFSET 9
192 #define RX_DESC_RSSI_OFFSET 11
193 #define RX_DESC_LINK_QUALITY_OFFSET 12
194 #define RX_DESC_PREAMBLE_TYPE_OFFSET 13
195 #define RX_DESC_DURATION_OFFSET 14
196 #define RX_DESC_RX_TIME_OFFSET 16
197
198 struct tx_desc {
199 u32 NextDescriptor;
200 u16 TxStartOfFrame;
201 u16 TxLength;
202
203 u8 TxState;
204 u8 TxStatus;
205 u8 RetryCount;
206
207 u8 TxRate;
208
209 u8 KeyIndex;
210 u8 ChiperType;
211 u8 ChipreLength;
212 u8 Reserved1;
213
214 u8 Reserved;
215 u8 PacketType;
216 u16 HostTxLength;
217 };
218
219 #define TX_DESC_NEXT_OFFSET 0
220 #define TX_DESC_POS_OFFSET 4
221 #define TX_DESC_SIZE_OFFSET 6
222 #define TX_DESC_FLAGS_OFFSET 8
223 #define TX_DESC_STATUS_OFFSET 9
224 #define TX_DESC_RETRY_OFFSET 10
225 #define TX_DESC_RATE_OFFSET 11
226 #define TX_DESC_KEY_INDEX_OFFSET 12
227 #define TX_DESC_CIPHER_TYPE_OFFSET 13
228 #define TX_DESC_CIPHER_LENGTH_OFFSET 14
229 #define TX_DESC_PACKET_TYPE_OFFSET 17
230 #define TX_DESC_HOST_LENGTH_OFFSET 18
231
232 /*
233 * Host-MAC interface
234 */
235
236 #define TX_STATUS_SUCCESS 0x00
237
238 #define TX_FIRM_OWN 0x80
239 #define TX_DONE 0x40
240
241 #define TX_ERROR 0x01
242
243 #define TX_PACKET_TYPE_DATA 0x01
244 #define TX_PACKET_TYPE_MGMT 0x02
245
246 #define ISR_EMPTY 0x00 /* no bits set in ISR */
247 #define ISR_TxCOMPLETE 0x01 /* packet transmitted */
248 #define ISR_RxCOMPLETE 0x02 /* packet received */
249 #define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */
250 #define ISR_FATAL_ERROR 0x08 /* Fatal error */
251 #define ISR_COMMAND_COMPLETE 0x10 /* command completed */
252 #define ISR_OUT_OF_RANGE 0x20 /* command completed */
253 #define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */
254 #define ISR_GENERIC_IRQ 0x80
255
256 #define Local_Mib_Type 0x01
257 #define Mac_Address_Mib_Type 0x02
258 #define Mac_Mib_Type 0x03
259 #define Statistics_Mib_Type 0x04
260 #define Mac_Mgmt_Mib_Type 0x05
261 #define Mac_Wep_Mib_Type 0x06
262 #define Phy_Mib_Type 0x07
263 #define Multi_Domain_MIB 0x08
264
265 #define MAC_MGMT_MIB_CUR_BSSID_POS 14
266 #define MAC_MIB_FRAG_THRESHOLD_POS 8
267 #define MAC_MIB_RTS_THRESHOLD_POS 10
268 #define MAC_MIB_SHORT_RETRY_POS 16
269 #define MAC_MIB_LONG_RETRY_POS 17
270 #define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
271 #define MAC_MGMT_MIB_BEACON_PER_POS 0
272 #define MAC_MGMT_MIB_STATION_ID_POS 6
273 #define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
274 #define MAC_MGMT_MIB_CUR_BSSID_POS 14
275 #define MAC_MGMT_MIB_PS_MODE_POS 53
276 #define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
277 #define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
278 #define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
279 #define PHY_MIB_CHANNEL_POS 14
280 #define PHY_MIB_RATE_SET_POS 20
281 #define PHY_MIB_REG_DOMAIN_POS 26
282 #define LOCAL_MIB_AUTO_TX_RATE_POS 3
283 #define LOCAL_MIB_SSID_SIZE 5
284 #define LOCAL_MIB_TX_PROMISCUOUS_POS 6
285 #define LOCAL_MIB_TX_MGMT_RATE_POS 7
286 #define LOCAL_MIB_TX_CONTROL_RATE_POS 8
287 #define LOCAL_MIB_PREAMBLE_TYPE 9
288 #define MAC_ADDR_MIB_MAC_ADDR_POS 0
289
290 #define CMD_Set_MIB_Vars 0x01
291 #define CMD_Get_MIB_Vars 0x02
292 #define CMD_Scan 0x03
293 #define CMD_Join 0x04
294 #define CMD_Start 0x05
295 #define CMD_EnableRadio 0x06
296 #define CMD_DisableRadio 0x07
297 #define CMD_SiteSurvey 0x0B
298
299 #define CMD_STATUS_IDLE 0x00
300 #define CMD_STATUS_COMPLETE 0x01
301 #define CMD_STATUS_UNKNOWN 0x02
302 #define CMD_STATUS_INVALID_PARAMETER 0x03
303 #define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
304 #define CMD_STATUS_TIME_OUT 0x07
305 #define CMD_STATUS_IN_PROGRESS 0x08
306 #define CMD_STATUS_REJECTED_RADIO_OFF 0x09
307 #define CMD_STATUS_HOST_ERROR 0xFF
308 #define CMD_STATUS_BUSY 0xFE
309
310 #define CMD_BLOCK_COMMAND_OFFSET 0
311 #define CMD_BLOCK_STATUS_OFFSET 1
312 #define CMD_BLOCK_PARAMETERS_OFFSET 4
313
314 #define SCAN_OPTIONS_SITE_SURVEY 0x80
315
316 #define MGMT_FRAME_BODY_OFFSET 24
317 #define MAX_AUTHENTICATION_RETRIES 3
318 #define MAX_ASSOCIATION_RETRIES 3
319
320 #define AUTHENTICATION_RESPONSE_TIME_OUT 1000
321
322 #define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
323 #define LOOP_RETRY_LIMIT 500000
324
325 #define ACTIVE_MODE 1
326 #define PS_MODE 2
327
328 #define MAX_ENCRYPTION_KEYS 4
329 #define MAX_ENCRYPTION_KEY_SIZE 40
330
331 /*
332 * 802.11 related definitions
333 */
334
335 /*
336 * Regulatory Domains
337 */
338
339 #define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */
340 #define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */
341 #define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */
342 #define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */
343 #define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */
344 #define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */
345 #define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */
346 #define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */
347
348 #define BSS_TYPE_AD_HOC 1
349 #define BSS_TYPE_INFRASTRUCTURE 2
350
351 #define SCAN_TYPE_ACTIVE 0
352 #define SCAN_TYPE_PASSIVE 1
353
354 #define LONG_PREAMBLE 0
355 #define SHORT_PREAMBLE 1
356 #define AUTO_PREAMBLE 2
357
358 #define DATA_FRAME_WS_HEADER_SIZE 30
359
360 /* promiscuous mode control */
361 #define PROM_MODE_OFF 0x0
362 #define PROM_MODE_UNKNOWN 0x1
363 #define PROM_MODE_CRC_FAILED 0x2
364 #define PROM_MODE_DUPLICATED 0x4
365 #define PROM_MODE_MGMT 0x8
366 #define PROM_MODE_CTRL 0x10
367 #define PROM_MODE_BAD_PROTOCOL 0x20
368
369 #define IFACE_INT_STATUS_OFFSET 0
370 #define IFACE_INT_MASK_OFFSET 1
371 #define IFACE_LOCKOUT_HOST_OFFSET 2
372 #define IFACE_LOCKOUT_MAC_OFFSET 3
373 #define IFACE_FUNC_CTRL_OFFSET 28
374 #define IFACE_MAC_STAT_OFFSET 30
375 #define IFACE_GENERIC_INT_TYPE_OFFSET 32
376
377 #define CIPHER_SUITE_NONE 0
378 #define CIPHER_SUITE_WEP_64 1
379 #define CIPHER_SUITE_TKIP 2
380 #define CIPHER_SUITE_AES 3
381 #define CIPHER_SUITE_CCX 4
382 #define CIPHER_SUITE_WEP_128 5
383
384 /*
385 * IFACE MACROS & definitions
386 */
387
388 /*
389 * FuncCtrl field:
390 */
391 #define FUNC_CTRL_TxENABLE 0x10
392 #define FUNC_CTRL_RxENABLE 0x20
393 #define FUNC_CTRL_INIT_COMPLETE 0x01
394
395 /* A stub firmware image which reads the MAC address from NVRAM on the card.
396 For copyright information and source see the end of this file. */
397 static u8 mac_reader[] = {
398 0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
399 0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
400 0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
401 0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
402 0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
403 0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
404 0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
405 0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
406 0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
407 0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
408 0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
409 0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
410 0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
411 0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
412 0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
413 0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
414 0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
415 0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
416 0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
417 0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
418 0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
419 0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
420 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
421 0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
422 0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
423 0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
424 0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
425 0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
426 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
427 0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
428 0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
429 0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
430 0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
431 0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
432 0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
433 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
434 0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
435 0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
436 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
437 0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
438 0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
439 0x00, 0x01, 0x00, 0x02
440 };
441
442 struct atmel_private {
443 void *card; /* Bus dependent structure varies for PCcard */
444 int (*present_callback)(void *); /* And callback which uses it */
445 char firmware_id[32];
446 AtmelFWType firmware_type;
447 u8 *firmware;
448 int firmware_length;
449 struct timer_list management_timer;
450 struct net_device *dev;
451 struct device *sys_dev;
452 struct iw_statistics wstats;
453 spinlock_t irqlock, timerlock; /* spinlocks */
454 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
455 enum {
456 CARD_TYPE_PARALLEL_FLASH,
457 CARD_TYPE_SPI_FLASH,
458 CARD_TYPE_EEPROM
459 } card_type;
460 int do_rx_crc; /* If we need to CRC incoming packets */
461 int probe_crc; /* set if we don't yet know */
462 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
463 u16 rx_desc_head;
464 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
465 u16 tx_free_mem, tx_buff_head, tx_buff_tail;
466
467 u16 frag_seq, frag_len, frag_no;
468 u8 frag_source[6];
469
470 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
471 u8 group_cipher_suite, pairwise_cipher_suite;
472 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
473 int wep_key_len[MAX_ENCRYPTION_KEYS];
474 int use_wpa, radio_on_broken; /* firmware dependent stuff. */
475
476 u16 host_info_base;
477 struct host_info_struct {
478 /* NB this is matched to the hardware, don't change. */
479 u8 volatile int_status;
480 u8 volatile int_mask;
481 u8 volatile lockout_host;
482 u8 volatile lockout_mac;
483
484 u16 tx_buff_pos;
485 u16 tx_buff_size;
486 u16 tx_desc_pos;
487 u16 tx_desc_count;
488
489 u16 rx_buff_pos;
490 u16 rx_buff_size;
491 u16 rx_desc_pos;
492 u16 rx_desc_count;
493
494 u16 build_version;
495 u16 command_pos;
496
497 u16 major_version;
498 u16 minor_version;
499
500 u16 func_ctrl;
501 u16 mac_status;
502 u16 generic_IRQ_type;
503 u8 reserved[2];
504 } host_info;
505
506 enum {
507 STATION_STATE_SCANNING,
508 STATION_STATE_JOINNING,
509 STATION_STATE_AUTHENTICATING,
510 STATION_STATE_ASSOCIATING,
511 STATION_STATE_READY,
512 STATION_STATE_REASSOCIATING,
513 STATION_STATE_DOWN,
514 STATION_STATE_MGMT_ERROR
515 } station_state;
516
517 int operating_mode, power_mode;
518 time_t last_qual;
519 int beacons_this_sec;
520 int channel;
521 int reg_domain, config_reg_domain;
522 int tx_rate;
523 int auto_tx_rate;
524 int rts_threshold;
525 int frag_threshold;
526 int long_retry, short_retry;
527 int preamble;
528 int default_beacon_period, beacon_period, listen_interval;
529 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
530 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
531 enum {
532 SITE_SURVEY_IDLE,
533 SITE_SURVEY_IN_PROGRESS,
534 SITE_SURVEY_COMPLETED
535 } site_survey_state;
536 unsigned long last_survey;
537
538 int station_was_associated, station_is_associated;
539 int fast_scan;
540
541 struct bss_info {
542 int channel;
543 int SSIDsize;
544 int RSSI;
545 int UsingWEP;
546 int preamble;
547 int beacon_period;
548 int BSStype;
549 u8 BSSID[6];
550 u8 SSID[MAX_SSID_LENGTH];
551 } BSSinfo[MAX_BSS_ENTRIES];
552 int BSS_list_entries, current_BSS;
553 int connect_to_any_BSS;
554 int SSID_size, new_SSID_size;
555 u8 CurrentBSSID[6], BSSID[6];
556 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
557 u64 last_beacon_timestamp;
558 u8 rx_buf[MAX_WIRELESS_BODY];
559 };
560
561 static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
562
563 static const struct {
564 int reg_domain;
565 int min, max;
566 char *name;
567 } channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
568 { REG_DOMAIN_DOC, 1, 11, "Canada" },
569 { REG_DOMAIN_ETSI, 1, 13, "Europe" },
570 { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
571 { REG_DOMAIN_FRANCE, 10, 13, "France" },
572 { REG_DOMAIN_MKK, 14, 14, "MKK" },
573 { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
574 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
575
576 static void build_wpa_mib(struct atmel_private *priv);
577 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
578 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
579 const unsigned char *src, u16 len);
580 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
581 u16 src, u16 len);
582 static void atmel_set_gcr(struct net_device *dev, u16 mask);
583 static void atmel_clear_gcr(struct net_device *dev, u16 mask);
584 static int atmel_lock_mac(struct atmel_private *priv);
585 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
586 static void atmel_command_irq(struct atmel_private *priv);
587 static int atmel_validate_channel(struct atmel_private *priv, int channel);
588 static void atmel_management_frame(struct atmel_private *priv,
589 struct ieee80211_hdr *header,
590 u16 frame_len, u8 rssi);
591 static void atmel_management_timer(u_long a);
592 static void atmel_send_command(struct atmel_private *priv, int command,
593 void *cmd, int cmd_size);
594 static int atmel_send_command_wait(struct atmel_private *priv, int command,
595 void *cmd, int cmd_size);
596 static void atmel_transmit_management_frame(struct atmel_private *priv,
597 struct ieee80211_hdr *header,
598 u8 *body, int body_len);
599
600 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
601 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
602 u8 data);
603 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
604 u16 data);
605 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
606 u8 *data, int data_len);
607 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
608 u8 *data, int data_len);
609 static void atmel_scan(struct atmel_private *priv, int specific_ssid);
610 static void atmel_join_bss(struct atmel_private *priv, int bss_index);
611 static void atmel_smooth_qual(struct atmel_private *priv);
612 static void atmel_writeAR(struct net_device *dev, u16 data);
613 static int probe_atmel_card(struct net_device *dev);
614 static int reset_atmel_card(struct net_device *dev);
615 static void atmel_enter_state(struct atmel_private *priv, int new_state);
616 int atmel_open (struct net_device *dev);
617
618 static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
619 {
620 return priv->host_info_base + offset;
621 }
622
623 static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
624 {
625 return priv->host_info.command_pos + offset;
626 }
627
628 static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
629 {
630 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
631 }
632
633 static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
634 {
635 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
636 }
637
638 static inline u8 atmel_read8(struct net_device *dev, u16 offset)
639 {
640 return inb(dev->base_addr + offset);
641 }
642
643 static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
644 {
645 outb(data, dev->base_addr + offset);
646 }
647
648 static inline u16 atmel_read16(struct net_device *dev, u16 offset)
649 {
650 return inw(dev->base_addr + offset);
651 }
652
653 static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
654 {
655 outw(data, dev->base_addr + offset);
656 }
657
658 static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
659 {
660 atmel_writeAR(priv->dev, pos);
661 return atmel_read8(priv->dev, DR);
662 }
663
664 static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
665 {
666 atmel_writeAR(priv->dev, pos);
667 atmel_write8(priv->dev, DR, data);
668 }
669
670 static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
671 {
672 atmel_writeAR(priv->dev, pos);
673 return atmel_read16(priv->dev, DR);
674 }
675
676 static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
677 {
678 atmel_writeAR(priv->dev, pos);
679 atmel_write16(priv->dev, DR, data);
680 }
681
682 static const struct iw_handler_def atmel_handler_def;
683
684 static void tx_done_irq(struct atmel_private *priv)
685 {
686 int i;
687
688 for (i = 0;
689 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
690 i < priv->host_info.tx_desc_count;
691 i++) {
692 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
693 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
694 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
695
696 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
697
698 priv->tx_free_mem += msdu_size;
699 priv->tx_desc_free++;
700
701 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
702 priv->tx_buff_head = 0;
703 else
704 priv->tx_buff_head += msdu_size;
705
706 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
707 priv->tx_desc_head++ ;
708 else
709 priv->tx_desc_head = 0;
710
711 if (type == TX_PACKET_TYPE_DATA) {
712 if (status == TX_STATUS_SUCCESS)
713 priv->dev->stats.tx_packets++;
714 else
715 priv->dev->stats.tx_errors++;
716 netif_wake_queue(priv->dev);
717 }
718 }
719 }
720
721 static u16 find_tx_buff(struct atmel_private *priv, u16 len)
722 {
723 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
724
725 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
726 return 0;
727
728 if (bottom_free >= len)
729 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
730
731 if (priv->tx_free_mem - bottom_free >= len) {
732 priv->tx_buff_tail = 0;
733 return priv->host_info.tx_buff_pos;
734 }
735
736 return 0;
737 }
738
739 static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
740 u16 len, u16 buff, u8 type)
741 {
742 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
743 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
744 if (!priv->use_wpa)
745 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
746 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
747 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
748 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
749 if (priv->use_wpa) {
750 int cipher_type, cipher_length;
751 if (is_bcast) {
752 cipher_type = priv->group_cipher_suite;
753 if (cipher_type == CIPHER_SUITE_WEP_64 ||
754 cipher_type == CIPHER_SUITE_WEP_128)
755 cipher_length = 8;
756 else if (cipher_type == CIPHER_SUITE_TKIP)
757 cipher_length = 12;
758 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
759 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
760 cipher_type = priv->pairwise_cipher_suite;
761 cipher_length = 8;
762 } else {
763 cipher_type = CIPHER_SUITE_NONE;
764 cipher_length = 0;
765 }
766 } else {
767 cipher_type = priv->pairwise_cipher_suite;
768 if (cipher_type == CIPHER_SUITE_WEP_64 ||
769 cipher_type == CIPHER_SUITE_WEP_128)
770 cipher_length = 8;
771 else if (cipher_type == CIPHER_SUITE_TKIP)
772 cipher_length = 12;
773 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
774 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
775 cipher_type = priv->group_cipher_suite;
776 cipher_length = 8;
777 } else {
778 cipher_type = CIPHER_SUITE_NONE;
779 cipher_length = 0;
780 }
781 }
782
783 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
784 cipher_type);
785 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
786 cipher_length);
787 }
788 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
789 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
790 if (priv->tx_desc_previous != priv->tx_desc_tail)
791 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
792 priv->tx_desc_previous = priv->tx_desc_tail;
793 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
794 priv->tx_desc_tail++;
795 else
796 priv->tx_desc_tail = 0;
797 priv->tx_desc_free--;
798 priv->tx_free_mem -= len;
799 }
800
801 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
802 {
803 static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
804 struct atmel_private *priv = netdev_priv(dev);
805 struct ieee80211_hdr header;
806 unsigned long flags;
807 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
808
809 if (priv->card && priv->present_callback &&
810 !(*priv->present_callback)(priv->card)) {
811 dev->stats.tx_errors++;
812 dev_kfree_skb(skb);
813 return NETDEV_TX_OK;
814 }
815
816 if (priv->station_state != STATION_STATE_READY) {
817 dev->stats.tx_errors++;
818 dev_kfree_skb(skb);
819 return NETDEV_TX_OK;
820 }
821
822 /* first ensure the timer func cannot run */
823 spin_lock_bh(&priv->timerlock);
824 /* then stop the hardware ISR */
825 spin_lock_irqsave(&priv->irqlock, flags);
826 /* nb doing the above in the opposite order will deadlock */
827
828 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
829 12 first bytes (containing DA/SA) and put them in the appropriate
830 fields of the Wireless Header. Thus the packet length is then the
831 initial + 18 (+30-12) */
832
833 if (!(buff = find_tx_buff(priv, len + 18))) {
834 dev->stats.tx_dropped++;
835 spin_unlock_irqrestore(&priv->irqlock, flags);
836 spin_unlock_bh(&priv->timerlock);
837 netif_stop_queue(dev);
838 return NETDEV_TX_BUSY;
839 }
840
841 frame_ctl = IEEE80211_FTYPE_DATA;
842 header.duration_id = 0;
843 header.seq_ctrl = 0;
844 if (priv->wep_is_on)
845 frame_ctl |= IEEE80211_FCTL_PROTECTED;
846 if (priv->operating_mode == IW_MODE_ADHOC) {
847 skb_copy_from_linear_data(skb, &header.addr1, 6);
848 memcpy(&header.addr2, dev->dev_addr, 6);
849 memcpy(&header.addr3, priv->BSSID, 6);
850 } else {
851 frame_ctl |= IEEE80211_FCTL_TODS;
852 memcpy(&header.addr1, priv->CurrentBSSID, 6);
853 memcpy(&header.addr2, dev->dev_addr, 6);
854 skb_copy_from_linear_data(skb, &header.addr3, 6);
855 }
856
857 if (priv->use_wpa)
858 memcpy(&header.addr4, SNAP_RFC1024, 6);
859
860 header.frame_control = cpu_to_le16(frame_ctl);
861 /* Copy the wireless header into the card */
862 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
863 /* Copy the packet sans its 802.3 header addresses which have been replaced */
864 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
865 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
866
867 /* low bit of first byte of destination tells us if broadcast */
868 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
869 dev->stats.tx_bytes += len;
870
871 spin_unlock_irqrestore(&priv->irqlock, flags);
872 spin_unlock_bh(&priv->timerlock);
873 dev_kfree_skb(skb);
874
875 return NETDEV_TX_OK;
876 }
877
878 static void atmel_transmit_management_frame(struct atmel_private *priv,
879 struct ieee80211_hdr *header,
880 u8 *body, int body_len)
881 {
882 u16 buff;
883 int len = MGMT_FRAME_BODY_OFFSET + body_len;
884
885 if (!(buff = find_tx_buff(priv, len)))
886 return;
887
888 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
889 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
890 priv->tx_buff_tail += len;
891 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
892 }
893
894 static void fast_rx_path(struct atmel_private *priv,
895 struct ieee80211_hdr *header,
896 u16 msdu_size, u16 rx_packet_loc, u32 crc)
897 {
898 /* fast path: unfragmented packet copy directly into skbuf */
899 u8 mac4[6];
900 struct sk_buff *skb;
901 unsigned char *skbp;
902
903 /* get the final, mac 4 header field, this tells us encapsulation */
904 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
905 msdu_size -= 6;
906
907 if (priv->do_rx_crc) {
908 crc = crc32_le(crc, mac4, 6);
909 msdu_size -= 4;
910 }
911
912 if (!(skb = dev_alloc_skb(msdu_size + 14))) {
913 priv->dev->stats.rx_dropped++;
914 return;
915 }
916
917 skb_reserve(skb, 2);
918 skbp = skb_put(skb, msdu_size + 12);
919 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
920
921 if (priv->do_rx_crc) {
922 u32 netcrc;
923 crc = crc32_le(crc, skbp + 12, msdu_size);
924 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
925 if ((crc ^ 0xffffffff) != netcrc) {
926 priv->dev->stats.rx_crc_errors++;
927 dev_kfree_skb(skb);
928 return;
929 }
930 }
931
932 memcpy(skbp, header->addr1, 6); /* destination address */
933 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
934 memcpy(&skbp[6], header->addr3, 6);
935 else
936 memcpy(&skbp[6], header->addr2, 6); /* source address */
937
938 skb->protocol = eth_type_trans(skb, priv->dev);
939 skb->ip_summed = CHECKSUM_NONE;
940 netif_rx(skb);
941 priv->dev->stats.rx_bytes += 12 + msdu_size;
942 priv->dev->stats.rx_packets++;
943 }
944
945 /* Test to see if the packet in card memory at packet_loc has a valid CRC
946 It doesn't matter that this is slow: it is only used to proble the first few
947 packets. */
948 static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
949 {
950 int i = msdu_size - 4;
951 u32 netcrc, crc = 0xffffffff;
952
953 if (msdu_size < 4)
954 return 0;
955
956 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
957
958 atmel_writeAR(priv->dev, packet_loc);
959 while (i--) {
960 u8 octet = atmel_read8(priv->dev, DR);
961 crc = crc32_le(crc, &octet, 1);
962 }
963
964 return (crc ^ 0xffffffff) == netcrc;
965 }
966
967 static void frag_rx_path(struct atmel_private *priv,
968 struct ieee80211_hdr *header,
969 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
970 u8 frag_no, int more_frags)
971 {
972 u8 mac4[6];
973 u8 source[6];
974 struct sk_buff *skb;
975
976 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
977 memcpy(source, header->addr3, 6);
978 else
979 memcpy(source, header->addr2, 6);
980
981 rx_packet_loc += 24; /* skip header */
982
983 if (priv->do_rx_crc)
984 msdu_size -= 4;
985
986 if (frag_no == 0) { /* first fragment */
987 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
988 msdu_size -= 6;
989 rx_packet_loc += 6;
990
991 if (priv->do_rx_crc)
992 crc = crc32_le(crc, mac4, 6);
993
994 priv->frag_seq = seq_no;
995 priv->frag_no = 1;
996 priv->frag_len = msdu_size;
997 memcpy(priv->frag_source, source, 6);
998 memcpy(&priv->rx_buf[6], source, 6);
999 memcpy(priv->rx_buf, header->addr1, 6);
1000
1001 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1002
1003 if (priv->do_rx_crc) {
1004 u32 netcrc;
1005 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1006 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1007 if ((crc ^ 0xffffffff) != netcrc) {
1008 priv->dev->stats.rx_crc_errors++;
1009 memset(priv->frag_source, 0xff, 6);
1010 }
1011 }
1012
1013 } else if (priv->frag_no == frag_no &&
1014 priv->frag_seq == seq_no &&
1015 memcmp(priv->frag_source, source, 6) == 0) {
1016
1017 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
1018 rx_packet_loc, msdu_size);
1019 if (priv->do_rx_crc) {
1020 u32 netcrc;
1021 crc = crc32_le(crc,
1022 &priv->rx_buf[12 + priv->frag_len],
1023 msdu_size);
1024 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1025 if ((crc ^ 0xffffffff) != netcrc) {
1026 priv->dev->stats.rx_crc_errors++;
1027 memset(priv->frag_source, 0xff, 6);
1028 more_frags = 1; /* don't send broken assembly */
1029 }
1030 }
1031
1032 priv->frag_len += msdu_size;
1033 priv->frag_no++;
1034
1035 if (!more_frags) { /* last one */
1036 memset(priv->frag_source, 0xff, 6);
1037 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
1038 priv->dev->stats.rx_dropped++;
1039 } else {
1040 skb_reserve(skb, 2);
1041 memcpy(skb_put(skb, priv->frag_len + 12),
1042 priv->rx_buf,
1043 priv->frag_len + 12);
1044 skb->protocol = eth_type_trans(skb, priv->dev);
1045 skb->ip_summed = CHECKSUM_NONE;
1046 netif_rx(skb);
1047 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1048 priv->dev->stats.rx_packets++;
1049 }
1050 }
1051 } else
1052 priv->wstats.discard.fragment++;
1053 }
1054
1055 static void rx_done_irq(struct atmel_private *priv)
1056 {
1057 int i;
1058 struct ieee80211_hdr header;
1059
1060 for (i = 0;
1061 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1062 i < priv->host_info.rx_desc_count;
1063 i++) {
1064
1065 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1066 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1067 u32 crc = 0xffffffff;
1068
1069 if (status != RX_STATUS_SUCCESS) {
1070 if (status == 0xc1) /* determined by experiment */
1071 priv->wstats.discard.nwid++;
1072 else
1073 priv->dev->stats.rx_errors++;
1074 goto next;
1075 }
1076
1077 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1078 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
1079
1080 if (msdu_size < 30) {
1081 priv->dev->stats.rx_errors++;
1082 goto next;
1083 }
1084
1085 /* Get header as far as end of seq_ctrl */
1086 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
1087 frame_ctl = le16_to_cpu(header.frame_control);
1088 seq_control = le16_to_cpu(header.seq_ctrl);
1089
1090 /* probe for CRC use here if needed once five packets have
1091 arrived with the same crc status, we assume we know what's
1092 happening and stop probing */
1093 if (priv->probe_crc) {
1094 if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
1095 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1096 } else {
1097 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1098 }
1099 if (priv->do_rx_crc) {
1100 if (priv->crc_ok_cnt++ > 5)
1101 priv->probe_crc = 0;
1102 } else {
1103 if (priv->crc_ko_cnt++ > 5)
1104 priv->probe_crc = 0;
1105 }
1106 }
1107
1108 /* don't CRC header when WEP in use */
1109 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
1110 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1111 }
1112 msdu_size -= 24; /* header */
1113
1114 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
1115 int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1116 u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1117 u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
1118
1119 if (!more_fragments && packet_fragment_no == 0) {
1120 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1121 } else {
1122 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1123 packet_sequence_no, packet_fragment_no, more_fragments);
1124 }
1125 }
1126
1127 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
1128 /* copy rest of packet into buffer */
1129 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
1130
1131 /* we use the same buffer for frag reassembly and control packets */
1132 memset(priv->frag_source, 0xff, 6);
1133
1134 if (priv->do_rx_crc) {
1135 /* last 4 octets is crc */
1136 msdu_size -= 4;
1137 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1138 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
1139 priv->dev->stats.rx_crc_errors++;
1140 goto next;
1141 }
1142 }
1143
1144 atmel_management_frame(priv, &header, msdu_size,
1145 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
1146 }
1147
1148 next:
1149 /* release descriptor */
1150 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1151
1152 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
1153 priv->rx_desc_head++;
1154 else
1155 priv->rx_desc_head = 0;
1156 }
1157 }
1158
1159 static irqreturn_t service_interrupt(int irq, void *dev_id)
1160 {
1161 struct net_device *dev = (struct net_device *) dev_id;
1162 struct atmel_private *priv = netdev_priv(dev);
1163 u8 isr;
1164 int i = -1;
1165 static const u8 irq_order[] = {
1166 ISR_OUT_OF_RANGE,
1167 ISR_RxCOMPLETE,
1168 ISR_TxCOMPLETE,
1169 ISR_RxFRAMELOST,
1170 ISR_FATAL_ERROR,
1171 ISR_COMMAND_COMPLETE,
1172 ISR_IBSS_MERGE,
1173 ISR_GENERIC_IRQ
1174 };
1175
1176 if (priv->card && priv->present_callback &&
1177 !(*priv->present_callback)(priv->card))
1178 return IRQ_HANDLED;
1179
1180 /* In this state upper-level code assumes it can mess with
1181 the card unhampered by interrupts which may change register state.
1182 Note that even though the card shouldn't generate interrupts
1183 the inturrupt line may be shared. This allows card setup
1184 to go on without disabling interrupts for a long time. */
1185 if (priv->station_state == STATION_STATE_DOWN)
1186 return IRQ_NONE;
1187
1188 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1189
1190 while (1) {
1191 if (!atmel_lock_mac(priv)) {
1192 /* failed to contact card */
1193 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1194 return IRQ_HANDLED;
1195 }
1196
1197 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1198 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1199
1200 if (!isr) {
1201 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1202 return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1203 }
1204
1205 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
1206
1207 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
1208 if (isr & irq_order[i])
1209 break;
1210
1211 if (!atmel_lock_mac(priv)) {
1212 /* failed to contact card */
1213 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1214 return IRQ_HANDLED;
1215 }
1216
1217 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1218 isr ^= irq_order[i];
1219 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1220 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
1221
1222 switch (irq_order[i]) {
1223
1224 case ISR_OUT_OF_RANGE:
1225 if (priv->operating_mode == IW_MODE_INFRA &&
1226 priv->station_state == STATION_STATE_READY) {
1227 priv->station_is_associated = 0;
1228 atmel_scan(priv, 1);
1229 }
1230 break;
1231
1232 case ISR_RxFRAMELOST:
1233 priv->wstats.discard.misc++;
1234 /* fall through */
1235 case ISR_RxCOMPLETE:
1236 rx_done_irq(priv);
1237 break;
1238
1239 case ISR_TxCOMPLETE:
1240 tx_done_irq(priv);
1241 break;
1242
1243 case ISR_FATAL_ERROR:
1244 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1245 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1246 break;
1247
1248 case ISR_COMMAND_COMPLETE:
1249 atmel_command_irq(priv);
1250 break;
1251
1252 case ISR_IBSS_MERGE:
1253 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
1254 priv->CurrentBSSID, 6);
1255 /* The WPA stuff cares about the current AP address */
1256 if (priv->use_wpa)
1257 build_wpa_mib(priv);
1258 break;
1259 case ISR_GENERIC_IRQ:
1260 printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1261 break;
1262 }
1263 }
1264 }
1265
1266 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
1267 {
1268 struct atmel_private *priv = netdev_priv(dev);
1269
1270 /* update the link quality here in case we are seeing no beacons
1271 at all to drive the process */
1272 atmel_smooth_qual(priv);
1273
1274 priv->wstats.status = priv->station_state;
1275
1276 if (priv->operating_mode == IW_MODE_INFRA) {
1277 if (priv->station_state != STATION_STATE_READY) {
1278 priv->wstats.qual.qual = 0;
1279 priv->wstats.qual.level = 0;
1280 priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1281 | IW_QUAL_LEVEL_INVALID);
1282 }
1283 priv->wstats.qual.noise = 0;
1284 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1285 } else {
1286 /* Quality levels cannot be determined in ad-hoc mode,
1287 because we can 'hear' more that one remote station. */
1288 priv->wstats.qual.qual = 0;
1289 priv->wstats.qual.level = 0;
1290 priv->wstats.qual.noise = 0;
1291 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1292 | IW_QUAL_LEVEL_INVALID
1293 | IW_QUAL_NOISE_INVALID;
1294 priv->wstats.miss.beacon = 0;
1295 }
1296
1297 return &priv->wstats;
1298 }
1299
1300 static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1301 {
1302 if ((new_mtu < 68) || (new_mtu > 2312))
1303 return -EINVAL;
1304 dev->mtu = new_mtu;
1305 return 0;
1306 }
1307
1308 static int atmel_set_mac_address(struct net_device *dev, void *p)
1309 {
1310 struct sockaddr *addr = p;
1311
1312 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
1313 return atmel_open(dev);
1314 }
1315
1316 EXPORT_SYMBOL(atmel_open);
1317
1318 int atmel_open(struct net_device *dev)
1319 {
1320 struct atmel_private *priv = netdev_priv(dev);
1321 int i, channel, err;
1322
1323 /* any scheduled timer is no longer needed and might screw things up.. */
1324 del_timer_sync(&priv->management_timer);
1325
1326 /* Interrupts will not touch the card once in this state... */
1327 priv->station_state = STATION_STATE_DOWN;
1328
1329 if (priv->new_SSID_size) {
1330 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1331 priv->SSID_size = priv->new_SSID_size;
1332 priv->new_SSID_size = 0;
1333 }
1334 priv->BSS_list_entries = 0;
1335
1336 priv->AuthenticationRequestRetryCnt = 0;
1337 priv->AssociationRequestRetryCnt = 0;
1338 priv->ReAssociationRequestRetryCnt = 0;
1339 priv->CurrentAuthentTransactionSeqNum = 0x0001;
1340 priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1341
1342 priv->site_survey_state = SITE_SURVEY_IDLE;
1343 priv->station_is_associated = 0;
1344
1345 err = reset_atmel_card(dev);
1346 if (err)
1347 return err;
1348
1349 if (priv->config_reg_domain) {
1350 priv->reg_domain = priv->config_reg_domain;
1351 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1352 } else {
1353 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
1354 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1355 if (priv->reg_domain == channel_table[i].reg_domain)
1356 break;
1357 if (i == ARRAY_SIZE(channel_table)) {
1358 priv->reg_domain = REG_DOMAIN_MKK1;
1359 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
1360 }
1361 }
1362
1363 if ((channel = atmel_validate_channel(priv, priv->channel)))
1364 priv->channel = channel;
1365
1366 /* this moves station_state on.... */
1367 atmel_scan(priv, 1);
1368
1369 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1370 return 0;
1371 }
1372
1373 static int atmel_close(struct net_device *dev)
1374 {
1375 struct atmel_private *priv = netdev_priv(dev);
1376
1377 /* Send event to userspace that we are disassociating */
1378 if (priv->station_state == STATION_STATE_READY) {
1379 union iwreq_data wrqu;
1380
1381 wrqu.data.length = 0;
1382 wrqu.data.flags = 0;
1383 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1384 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1385 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1386 }
1387
1388 atmel_enter_state(priv, STATION_STATE_DOWN);
1389
1390 if (priv->bus_type == BUS_TYPE_PCCARD)
1391 atmel_write16(dev, GCR, 0x0060);
1392 atmel_write16(dev, GCR, 0x0040);
1393 return 0;
1394 }
1395
1396 static int atmel_validate_channel(struct atmel_private *priv, int channel)
1397 {
1398 /* check that channel is OK, if so return zero,
1399 else return suitable default channel */
1400 int i;
1401
1402 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1403 if (priv->reg_domain == channel_table[i].reg_domain) {
1404 if (channel >= channel_table[i].min &&
1405 channel <= channel_table[i].max)
1406 return 0;
1407 else
1408 return channel_table[i].min;
1409 }
1410 return 0;
1411 }
1412
1413 static int atmel_proc_output (char *buf, struct atmel_private *priv)
1414 {
1415 int i;
1416 char *p = buf;
1417 char *s, *r, *c;
1418
1419 p += sprintf(p, "Driver version:\t\t%d.%d\n",
1420 DRIVER_MAJOR, DRIVER_MINOR);
1421
1422 if (priv->station_state != STATION_STATE_DOWN) {
1423 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1424 "Firmware location:\t",
1425 priv->host_info.major_version,
1426 priv->host_info.minor_version,
1427 priv->host_info.build_version);
1428
1429 if (priv->card_type != CARD_TYPE_EEPROM)
1430 p += sprintf(p, "on card\n");
1431 else if (priv->firmware)
1432 p += sprintf(p, "%s loaded by host\n",
1433 priv->firmware_id);
1434 else
1435 p += sprintf(p, "%s loaded by hotplug\n",
1436 priv->firmware_id);
1437
1438 switch (priv->card_type) {
1439 case CARD_TYPE_PARALLEL_FLASH:
1440 c = "Parallel flash";
1441 break;
1442 case CARD_TYPE_SPI_FLASH:
1443 c = "SPI flash\n";
1444 break;
1445 case CARD_TYPE_EEPROM:
1446 c = "EEPROM";
1447 break;
1448 default:
1449 c = "<unknown>";
1450 }
1451
1452 r = "<unknown>";
1453 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1454 if (priv->reg_domain == channel_table[i].reg_domain)
1455 r = channel_table[i].name;
1456
1457 p += sprintf(p, "MAC memory type:\t%s\n", c);
1458 p += sprintf(p, "Regulatory domain:\t%s\n", r);
1459 p += sprintf(p, "Host CRC checking:\t%s\n",
1460 priv->do_rx_crc ? "On" : "Off");
1461 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1462 priv->use_wpa ? "Yes" : "No");
1463 }
1464
1465 switch (priv->station_state) {
1466 case STATION_STATE_SCANNING:
1467 s = "Scanning";
1468 break;
1469 case STATION_STATE_JOINNING:
1470 s = "Joining";
1471 break;
1472 case STATION_STATE_AUTHENTICATING:
1473 s = "Authenticating";
1474 break;
1475 case STATION_STATE_ASSOCIATING:
1476 s = "Associating";
1477 break;
1478 case STATION_STATE_READY:
1479 s = "Ready";
1480 break;
1481 case STATION_STATE_REASSOCIATING:
1482 s = "Reassociating";
1483 break;
1484 case STATION_STATE_MGMT_ERROR:
1485 s = "Management error";
1486 break;
1487 case STATION_STATE_DOWN:
1488 s = "Down";
1489 break;
1490 default:
1491 s = "<unknown>";
1492 }
1493
1494 p += sprintf(p, "Current state:\t\t%s\n", s);
1495 return p - buf;
1496 }
1497
1498 static int atmel_read_proc(char *page, char **start, off_t off,
1499 int count, int *eof, void *data)
1500 {
1501 struct atmel_private *priv = data;
1502 int len = atmel_proc_output (page, priv);
1503 if (len <= off+count)
1504 *eof = 1;
1505 *start = page + off;
1506 len -= off;
1507 if (len > count)
1508 len = count;
1509 if (len < 0)
1510 len = 0;
1511 return len;
1512 }
1513
1514 static const struct net_device_ops atmel_netdev_ops = {
1515 .ndo_open = atmel_open,
1516 .ndo_stop = atmel_close,
1517 .ndo_change_mtu = atmel_change_mtu,
1518 .ndo_set_mac_address = atmel_set_mac_address,
1519 .ndo_start_xmit = start_tx,
1520 .ndo_do_ioctl = atmel_ioctl,
1521 .ndo_validate_addr = eth_validate_addr,
1522 };
1523
1524 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1525 const AtmelFWType fw_type,
1526 struct device *sys_dev,
1527 int (*card_present)(void *), void *card)
1528 {
1529 struct proc_dir_entry *ent;
1530 struct net_device *dev;
1531 struct atmel_private *priv;
1532 int rc;
1533
1534 /* Create the network device object. */
1535 dev = alloc_etherdev(sizeof(*priv));
1536 if (!dev)
1537 return NULL;
1538
1539 if (dev_alloc_name(dev, dev->name) < 0) {
1540 printk(KERN_ERR "atmel: Couldn't get name!\n");
1541 goto err_out_free;
1542 }
1543
1544 priv = netdev_priv(dev);
1545 priv->dev = dev;
1546 priv->sys_dev = sys_dev;
1547 priv->present_callback = card_present;
1548 priv->card = card;
1549 priv->firmware = NULL;
1550 priv->firmware_id[0] = '\0';
1551 priv->firmware_type = fw_type;
1552 if (firmware) /* module parameter */
1553 strcpy(priv->firmware_id, firmware);
1554 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1555 priv->station_state = STATION_STATE_DOWN;
1556 priv->do_rx_crc = 0;
1557 /* For PCMCIA cards, some chips need CRC, some don't
1558 so we have to probe. */
1559 if (priv->bus_type == BUS_TYPE_PCCARD) {
1560 priv->probe_crc = 1;
1561 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1562 } else
1563 priv->probe_crc = 0;
1564 priv->last_qual = jiffies;
1565 priv->last_beacon_timestamp = 0;
1566 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1567 memset(priv->BSSID, 0, 6);
1568 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1569 priv->station_was_associated = 0;
1570
1571 priv->last_survey = jiffies;
1572 priv->preamble = LONG_PREAMBLE;
1573 priv->operating_mode = IW_MODE_INFRA;
1574 priv->connect_to_any_BSS = 0;
1575 priv->config_reg_domain = 0;
1576 priv->reg_domain = 0;
1577 priv->tx_rate = 3;
1578 priv->auto_tx_rate = 1;
1579 priv->channel = 4;
1580 priv->power_mode = 0;
1581 priv->SSID[0] = '\0';
1582 priv->SSID_size = 0;
1583 priv->new_SSID_size = 0;
1584 priv->frag_threshold = 2346;
1585 priv->rts_threshold = 2347;
1586 priv->short_retry = 7;
1587 priv->long_retry = 4;
1588
1589 priv->wep_is_on = 0;
1590 priv->default_key = 0;
1591 priv->encryption_level = 0;
1592 priv->exclude_unencrypted = 0;
1593 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1594 priv->use_wpa = 0;
1595 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1596 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1597
1598 priv->default_beacon_period = priv->beacon_period = 100;
1599 priv->listen_interval = 1;
1600
1601 init_timer(&priv->management_timer);
1602 spin_lock_init(&priv->irqlock);
1603 spin_lock_init(&priv->timerlock);
1604 priv->management_timer.function = atmel_management_timer;
1605 priv->management_timer.data = (unsigned long) dev;
1606
1607 dev->netdev_ops = &atmel_netdev_ops;
1608 dev->wireless_handlers = &atmel_handler_def;
1609 dev->irq = irq;
1610 dev->base_addr = port;
1611
1612 SET_NETDEV_DEV(dev, sys_dev);
1613
1614 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1615 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1616 goto err_out_free;
1617 }
1618
1619 if (!request_region(dev->base_addr, 32,
1620 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
1621 goto err_out_irq;
1622 }
1623
1624 if (register_netdev(dev))
1625 goto err_out_res;
1626
1627 if (!probe_atmel_card(dev)) {
1628 unregister_netdev(dev);
1629 goto err_out_res;
1630 }
1631
1632 netif_carrier_off(dev);
1633
1634 ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1635 if (!ent)
1636 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1637
1638 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1639 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1640
1641 return dev;
1642
1643 err_out_res:
1644 release_region(dev->base_addr, 32);
1645 err_out_irq:
1646 free_irq(dev->irq, dev);
1647 err_out_free:
1648 free_netdev(dev);
1649 return NULL;
1650 }
1651
1652 EXPORT_SYMBOL(init_atmel_card);
1653
1654 void stop_atmel_card(struct net_device *dev)
1655 {
1656 struct atmel_private *priv = netdev_priv(dev);
1657
1658 /* put a brick on it... */
1659 if (priv->bus_type == BUS_TYPE_PCCARD)
1660 atmel_write16(dev, GCR, 0x0060);
1661 atmel_write16(dev, GCR, 0x0040);
1662
1663 del_timer_sync(&priv->management_timer);
1664 unregister_netdev(dev);
1665 remove_proc_entry("driver/atmel", NULL);
1666 free_irq(dev->irq, dev);
1667 kfree(priv->firmware);
1668 release_region(dev->base_addr, 32);
1669 free_netdev(dev);
1670 }
1671
1672 EXPORT_SYMBOL(stop_atmel_card);
1673
1674 static int atmel_set_essid(struct net_device *dev,
1675 struct iw_request_info *info,
1676 struct iw_point *dwrq,
1677 char *extra)
1678 {
1679 struct atmel_private *priv = netdev_priv(dev);
1680
1681 /* Check if we asked for `any' */
1682 if (dwrq->flags == 0) {
1683 priv->connect_to_any_BSS = 1;
1684 } else {
1685 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1686
1687 priv->connect_to_any_BSS = 0;
1688
1689 /* Check the size of the string */
1690 if (dwrq->length > MAX_SSID_LENGTH)
1691 return -E2BIG;
1692 if (index != 0)
1693 return -EINVAL;
1694
1695 memcpy(priv->new_SSID, extra, dwrq->length);
1696 priv->new_SSID_size = dwrq->length;
1697 }
1698
1699 return -EINPROGRESS;
1700 }
1701
1702 static int atmel_get_essid(struct net_device *dev,
1703 struct iw_request_info *info,
1704 struct iw_point *dwrq,
1705 char *extra)
1706 {
1707 struct atmel_private *priv = netdev_priv(dev);
1708
1709 /* Get the current SSID */
1710 if (priv->new_SSID_size != 0) {
1711 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1712 dwrq->length = priv->new_SSID_size;
1713 } else {
1714 memcpy(extra, priv->SSID, priv->SSID_size);
1715 dwrq->length = priv->SSID_size;
1716 }
1717
1718 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1719
1720 return 0;
1721 }
1722
1723 static int atmel_get_wap(struct net_device *dev,
1724 struct iw_request_info *info,
1725 struct sockaddr *awrq,
1726 char *extra)
1727 {
1728 struct atmel_private *priv = netdev_priv(dev);
1729 memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1730 awrq->sa_family = ARPHRD_ETHER;
1731
1732 return 0;
1733 }
1734
1735 static int atmel_set_encode(struct net_device *dev,
1736 struct iw_request_info *info,
1737 struct iw_point *dwrq,
1738 char *extra)
1739 {
1740 struct atmel_private *priv = netdev_priv(dev);
1741
1742 /* Basic checking: do we have a key to set ?
1743 * Note : with the new API, it's impossible to get a NULL pointer.
1744 * Therefore, we need to check a key size == 0 instead.
1745 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1746 * when no key is present (only change flags), but older versions
1747 * don't do it. - Jean II */
1748 if (dwrq->length > 0) {
1749 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1750 int current_index = priv->default_key;
1751 /* Check the size of the key */
1752 if (dwrq->length > 13) {
1753 return -EINVAL;
1754 }
1755 /* Check the index (none -> use current) */
1756 if (index < 0 || index >= 4)
1757 index = current_index;
1758 else
1759 priv->default_key = index;
1760 /* Set the length */
1761 if (dwrq->length > 5)
1762 priv->wep_key_len[index] = 13;
1763 else
1764 if (dwrq->length > 0)
1765 priv->wep_key_len[index] = 5;
1766 else
1767 /* Disable the key */
1768 priv->wep_key_len[index] = 0;
1769 /* Check if the key is not marked as invalid */
1770 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1771 /* Cleanup */
1772 memset(priv->wep_keys[index], 0, 13);
1773 /* Copy the key in the driver */
1774 memcpy(priv->wep_keys[index], extra, dwrq->length);
1775 }
1776 /* WE specify that if a valid key is set, encryption
1777 * should be enabled (user may turn it off later)
1778 * This is also how "iwconfig ethX key on" works */
1779 if (index == current_index &&
1780 priv->wep_key_len[index] > 0) {
1781 priv->wep_is_on = 1;
1782 priv->exclude_unencrypted = 1;
1783 if (priv->wep_key_len[index] > 5) {
1784 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1785 priv->encryption_level = 2;
1786 } else {
1787 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1788 priv->encryption_level = 1;
1789 }
1790 }
1791 } else {
1792 /* Do we want to just set the transmit key index ? */
1793 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1794 if (index >= 0 && index < 4) {
1795 priv->default_key = index;
1796 } else
1797 /* Don't complain if only change the mode */
1798 if (!(dwrq->flags & IW_ENCODE_MODE))
1799 return -EINVAL;
1800 }
1801 /* Read the flags */
1802 if (dwrq->flags & IW_ENCODE_DISABLED) {
1803 priv->wep_is_on = 0;
1804 priv->encryption_level = 0;
1805 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1806 } else {
1807 priv->wep_is_on = 1;
1808 if (priv->wep_key_len[priv->default_key] > 5) {
1809 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1810 priv->encryption_level = 2;
1811 } else {
1812 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1813 priv->encryption_level = 1;
1814 }
1815 }
1816 if (dwrq->flags & IW_ENCODE_RESTRICTED)
1817 priv->exclude_unencrypted = 1;
1818 if (dwrq->flags & IW_ENCODE_OPEN)
1819 priv->exclude_unencrypted = 0;
1820
1821 return -EINPROGRESS; /* Call commit handler */
1822 }
1823
1824 static int atmel_get_encode(struct net_device *dev,
1825 struct iw_request_info *info,
1826 struct iw_point *dwrq,
1827 char *extra)
1828 {
1829 struct atmel_private *priv = netdev_priv(dev);
1830 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1831
1832 if (!priv->wep_is_on)
1833 dwrq->flags = IW_ENCODE_DISABLED;
1834 else {
1835 if (priv->exclude_unencrypted)
1836 dwrq->flags = IW_ENCODE_RESTRICTED;
1837 else
1838 dwrq->flags = IW_ENCODE_OPEN;
1839 }
1840 /* Which key do we want ? -1 -> tx index */
1841 if (index < 0 || index >= 4)
1842 index = priv->default_key;
1843 dwrq->flags |= index + 1;
1844 /* Copy the key to the user buffer */
1845 dwrq->length = priv->wep_key_len[index];
1846 if (dwrq->length > 16) {
1847 dwrq->length = 0;
1848 } else {
1849 memset(extra, 0, 16);
1850 memcpy(extra, priv->wep_keys[index], dwrq->length);
1851 }
1852
1853 return 0;
1854 }
1855
1856 static int atmel_set_encodeext(struct net_device *dev,
1857 struct iw_request_info *info,
1858 union iwreq_data *wrqu,
1859 char *extra)
1860 {
1861 struct atmel_private *priv = netdev_priv(dev);
1862 struct iw_point *encoding = &wrqu->encoding;
1863 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1864 int idx, key_len, alg = ext->alg, set_key = 1;
1865
1866 /* Determine and validate the key index */
1867 idx = encoding->flags & IW_ENCODE_INDEX;
1868 if (idx) {
1869 if (idx < 1 || idx > 4)
1870 return -EINVAL;
1871 idx--;
1872 } else
1873 idx = priv->default_key;
1874
1875 if (encoding->flags & IW_ENCODE_DISABLED)
1876 alg = IW_ENCODE_ALG_NONE;
1877
1878 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1879 priv->default_key = idx;
1880 set_key = ext->key_len > 0 ? 1 : 0;
1881 }
1882
1883 if (set_key) {
1884 /* Set the requested key first */
1885 switch (alg) {
1886 case IW_ENCODE_ALG_NONE:
1887 priv->wep_is_on = 0;
1888 priv->encryption_level = 0;
1889 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1890 break;
1891 case IW_ENCODE_ALG_WEP:
1892 if (ext->key_len > 5) {
1893 priv->wep_key_len[idx] = 13;
1894 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1895 priv->encryption_level = 2;
1896 } else if (ext->key_len > 0) {
1897 priv->wep_key_len[idx] = 5;
1898 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1899 priv->encryption_level = 1;
1900 } else {
1901 return -EINVAL;
1902 }
1903 priv->wep_is_on = 1;
1904 memset(priv->wep_keys[idx], 0, 13);
1905 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1906 memcpy(priv->wep_keys[idx], ext->key, key_len);
1907 break;
1908 default:
1909 return -EINVAL;
1910 }
1911 }
1912
1913 return -EINPROGRESS;
1914 }
1915
1916 static int atmel_get_encodeext(struct net_device *dev,
1917 struct iw_request_info *info,
1918 union iwreq_data *wrqu,
1919 char *extra)
1920 {
1921 struct atmel_private *priv = netdev_priv(dev);
1922 struct iw_point *encoding = &wrqu->encoding;
1923 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1924 int idx, max_key_len;
1925
1926 max_key_len = encoding->length - sizeof(*ext);
1927 if (max_key_len < 0)
1928 return -EINVAL;
1929
1930 idx = encoding->flags & IW_ENCODE_INDEX;
1931 if (idx) {
1932 if (idx < 1 || idx > 4)
1933 return -EINVAL;
1934 idx--;
1935 } else
1936 idx = priv->default_key;
1937
1938 encoding->flags = idx + 1;
1939 memset(ext, 0, sizeof(*ext));
1940
1941 if (!priv->wep_is_on) {
1942 ext->alg = IW_ENCODE_ALG_NONE;
1943 ext->key_len = 0;
1944 encoding->flags |= IW_ENCODE_DISABLED;
1945 } else {
1946 if (priv->encryption_level > 0)
1947 ext->alg = IW_ENCODE_ALG_WEP;
1948 else
1949 return -EINVAL;
1950
1951 ext->key_len = priv->wep_key_len[idx];
1952 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1953 encoding->flags |= IW_ENCODE_ENABLED;
1954 }
1955
1956 return 0;
1957 }
1958
1959 static int atmel_set_auth(struct net_device *dev,
1960 struct iw_request_info *info,
1961 union iwreq_data *wrqu, char *extra)
1962 {
1963 struct atmel_private *priv = netdev_priv(dev);
1964 struct iw_param *param = &wrqu->param;
1965
1966 switch (param->flags & IW_AUTH_INDEX) {
1967 case IW_AUTH_WPA_VERSION:
1968 case IW_AUTH_CIPHER_PAIRWISE:
1969 case IW_AUTH_CIPHER_GROUP:
1970 case IW_AUTH_KEY_MGMT:
1971 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1972 case IW_AUTH_PRIVACY_INVOKED:
1973 /*
1974 * atmel does not use these parameters
1975 */
1976 break;
1977
1978 case IW_AUTH_DROP_UNENCRYPTED:
1979 priv->exclude_unencrypted = param->value ? 1 : 0;
1980 break;
1981
1982 case IW_AUTH_80211_AUTH_ALG: {
1983 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1984 priv->exclude_unencrypted = 1;
1985 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1986 priv->exclude_unencrypted = 0;
1987 } else
1988 return -EINVAL;
1989 break;
1990 }
1991
1992 case IW_AUTH_WPA_ENABLED:
1993 /* Silently accept disable of WPA */
1994 if (param->value > 0)
1995 return -EOPNOTSUPP;
1996 break;
1997
1998 default:
1999 return -EOPNOTSUPP;
2000 }
2001 return -EINPROGRESS;
2002 }
2003
2004 static int atmel_get_auth(struct net_device *dev,
2005 struct iw_request_info *info,
2006 union iwreq_data *wrqu, char *extra)
2007 {
2008 struct atmel_private *priv = netdev_priv(dev);
2009 struct iw_param *param = &wrqu->param;
2010
2011 switch (param->flags & IW_AUTH_INDEX) {
2012 case IW_AUTH_DROP_UNENCRYPTED:
2013 param->value = priv->exclude_unencrypted;
2014 break;
2015
2016 case IW_AUTH_80211_AUTH_ALG:
2017 if (priv->exclude_unencrypted == 1)
2018 param->value = IW_AUTH_ALG_SHARED_KEY;
2019 else
2020 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2021 break;
2022
2023 case IW_AUTH_WPA_ENABLED:
2024 param->value = 0;
2025 break;
2026
2027 default:
2028 return -EOPNOTSUPP;
2029 }
2030 return 0;
2031 }
2032
2033
2034 static int atmel_get_name(struct net_device *dev,
2035 struct iw_request_info *info,
2036 char *cwrq,
2037 char *extra)
2038 {
2039 strcpy(cwrq, "IEEE 802.11-DS");
2040 return 0;
2041 }
2042
2043 static int atmel_set_rate(struct net_device *dev,
2044 struct iw_request_info *info,
2045 struct iw_param *vwrq,
2046 char *extra)
2047 {
2048 struct atmel_private *priv = netdev_priv(dev);
2049
2050 if (vwrq->fixed == 0) {
2051 priv->tx_rate = 3;
2052 priv->auto_tx_rate = 1;
2053 } else {
2054 priv->auto_tx_rate = 0;
2055
2056 /* Which type of value ? */
2057 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2058 /* Setting by rate index */
2059 priv->tx_rate = vwrq->value;
2060 } else {
2061 /* Setting by frequency value */
2062 switch (vwrq->value) {
2063 case 1000000:
2064 priv->tx_rate = 0;
2065 break;
2066 case 2000000:
2067 priv->tx_rate = 1;
2068 break;
2069 case 5500000:
2070 priv->tx_rate = 2;
2071 break;
2072 case 11000000:
2073 priv->tx_rate = 3;
2074 break;
2075 default:
2076 return -EINVAL;
2077 }
2078 }
2079 }
2080
2081 return -EINPROGRESS;
2082 }
2083
2084 static int atmel_set_mode(struct net_device *dev,
2085 struct iw_request_info *info,
2086 __u32 *uwrq,
2087 char *extra)
2088 {
2089 struct atmel_private *priv = netdev_priv(dev);
2090
2091 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2092 return -EINVAL;
2093
2094 priv->operating_mode = *uwrq;
2095 return -EINPROGRESS;
2096 }
2097
2098 static int atmel_get_mode(struct net_device *dev,
2099 struct iw_request_info *info,
2100 __u32 *uwrq,
2101 char *extra)
2102 {
2103 struct atmel_private *priv = netdev_priv(dev);
2104
2105 *uwrq = priv->operating_mode;
2106 return 0;
2107 }
2108
2109 static int atmel_get_rate(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
2116 if (priv->auto_tx_rate) {
2117 vwrq->fixed = 0;
2118 vwrq->value = 11000000;
2119 } else {
2120 vwrq->fixed = 1;
2121 switch (priv->tx_rate) {
2122 case 0:
2123 vwrq->value = 1000000;
2124 break;
2125 case 1:
2126 vwrq->value = 2000000;
2127 break;
2128 case 2:
2129 vwrq->value = 5500000;
2130 break;
2131 case 3:
2132 vwrq->value = 11000000;
2133 break;
2134 }
2135 }
2136 return 0;
2137 }
2138
2139 static int atmel_set_power(struct net_device *dev,
2140 struct iw_request_info *info,
2141 struct iw_param *vwrq,
2142 char *extra)
2143 {
2144 struct atmel_private *priv = netdev_priv(dev);
2145 priv->power_mode = vwrq->disabled ? 0 : 1;
2146 return -EINPROGRESS;
2147 }
2148
2149 static int atmel_get_power(struct net_device *dev,
2150 struct iw_request_info *info,
2151 struct iw_param *vwrq,
2152 char *extra)
2153 {
2154 struct atmel_private *priv = netdev_priv(dev);
2155 vwrq->disabled = priv->power_mode ? 0 : 1;
2156 vwrq->flags = IW_POWER_ON;
2157 return 0;
2158 }
2159
2160 static int atmel_set_retry(struct net_device *dev,
2161 struct iw_request_info *info,
2162 struct iw_param *vwrq,
2163 char *extra)
2164 {
2165 struct atmel_private *priv = netdev_priv(dev);
2166
2167 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2168 if (vwrq->flags & IW_RETRY_LONG)
2169 priv->long_retry = vwrq->value;
2170 else if (vwrq->flags & IW_RETRY_SHORT)
2171 priv->short_retry = vwrq->value;
2172 else {
2173 /* No modifier : set both */
2174 priv->long_retry = vwrq->value;
2175 priv->short_retry = vwrq->value;
2176 }
2177 return -EINPROGRESS;
2178 }
2179
2180 return -EINVAL;
2181 }
2182
2183 static int atmel_get_retry(struct net_device *dev,
2184 struct iw_request_info *info,
2185 struct iw_param *vwrq,
2186 char *extra)
2187 {
2188 struct atmel_private *priv = netdev_priv(dev);
2189
2190 vwrq->disabled = 0; /* Can't be disabled */
2191
2192 /* Note : by default, display the short retry number */
2193 if (vwrq->flags & IW_RETRY_LONG) {
2194 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2195 vwrq->value = priv->long_retry;
2196 } else {
2197 vwrq->flags = IW_RETRY_LIMIT;
2198 vwrq->value = priv->short_retry;
2199 if (priv->long_retry != priv->short_retry)
2200 vwrq->flags |= IW_RETRY_SHORT;
2201 }
2202
2203 return 0;
2204 }
2205
2206 static int atmel_set_rts(struct net_device *dev,
2207 struct iw_request_info *info,
2208 struct iw_param *vwrq,
2209 char *extra)
2210 {
2211 struct atmel_private *priv = netdev_priv(dev);
2212 int rthr = vwrq->value;
2213
2214 if (vwrq->disabled)
2215 rthr = 2347;
2216 if ((rthr < 0) || (rthr > 2347)) {
2217 return -EINVAL;
2218 }
2219 priv->rts_threshold = rthr;
2220
2221 return -EINPROGRESS; /* Call commit handler */
2222 }
2223
2224 static int atmel_get_rts(struct net_device *dev,
2225 struct iw_request_info *info,
2226 struct iw_param *vwrq,
2227 char *extra)
2228 {
2229 struct atmel_private *priv = netdev_priv(dev);
2230
2231 vwrq->value = priv->rts_threshold;
2232 vwrq->disabled = (vwrq->value >= 2347);
2233 vwrq->fixed = 1;
2234
2235 return 0;
2236 }
2237
2238 static int atmel_set_frag(struct net_device *dev,
2239 struct iw_request_info *info,
2240 struct iw_param *vwrq,
2241 char *extra)
2242 {
2243 struct atmel_private *priv = netdev_priv(dev);
2244 int fthr = vwrq->value;
2245
2246 if (vwrq->disabled)
2247 fthr = 2346;
2248 if ((fthr < 256) || (fthr > 2346)) {
2249 return -EINVAL;
2250 }
2251 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2252 priv->frag_threshold = fthr;
2253
2254 return -EINPROGRESS; /* Call commit handler */
2255 }
2256
2257 static int atmel_get_frag(struct net_device *dev,
2258 struct iw_request_info *info,
2259 struct iw_param *vwrq,
2260 char *extra)
2261 {
2262 struct atmel_private *priv = netdev_priv(dev);
2263
2264 vwrq->value = priv->frag_threshold;
2265 vwrq->disabled = (vwrq->value >= 2346);
2266 vwrq->fixed = 1;
2267
2268 return 0;
2269 }
2270
2271 static int atmel_set_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 int rc = -EINPROGRESS; /* Call commit handler */
2278
2279 /* If setting by frequency, convert to a channel */
2280 if (fwrq->e == 1) {
2281 int f = fwrq->m / 100000;
2282
2283 /* Hack to fall through... */
2284 fwrq->e = 0;
2285 fwrq->m = ieee80211_freq_to_dsss_chan(f);
2286 }
2287 /* Setting by channel number */
2288 if ((fwrq->m > 1000) || (fwrq->e > 0))
2289 rc = -EOPNOTSUPP;
2290 else {
2291 int channel = fwrq->m;
2292 if (atmel_validate_channel(priv, channel) == 0) {
2293 priv->channel = channel;
2294 } else {
2295 rc = -EINVAL;
2296 }
2297 }
2298 return rc;
2299 }
2300
2301 static int atmel_get_freq(struct net_device *dev,
2302 struct iw_request_info *info,
2303 struct iw_freq *fwrq,
2304 char *extra)
2305 {
2306 struct atmel_private *priv = netdev_priv(dev);
2307
2308 fwrq->m = priv->channel;
2309 fwrq->e = 0;
2310 return 0;
2311 }
2312
2313 static int atmel_set_scan(struct net_device *dev,
2314 struct iw_request_info *info,
2315 struct iw_point *dwrq,
2316 char *extra)
2317 {
2318 struct atmel_private *priv = netdev_priv(dev);
2319 unsigned long flags;
2320
2321 /* Note : you may have realised that, as this is a SET operation,
2322 * this is privileged and therefore a normal user can't
2323 * perform scanning.
2324 * This is not an error, while the device perform scanning,
2325 * traffic doesn't flow, so it's a perfect DoS...
2326 * Jean II */
2327
2328 if (priv->station_state == STATION_STATE_DOWN)
2329 return -EAGAIN;
2330
2331 /* Timeout old surveys. */
2332 if (time_after(jiffies, priv->last_survey + 20 * HZ))
2333 priv->site_survey_state = SITE_SURVEY_IDLE;
2334 priv->last_survey = jiffies;
2335
2336 /* Initiate a scan command */
2337 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2338 return -EBUSY;
2339
2340 del_timer_sync(&priv->management_timer);
2341 spin_lock_irqsave(&priv->irqlock, flags);
2342
2343 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2344 priv->fast_scan = 0;
2345 atmel_scan(priv, 0);
2346 spin_unlock_irqrestore(&priv->irqlock, flags);
2347
2348 return 0;
2349 }
2350
2351 static int atmel_get_scan(struct net_device *dev,
2352 struct iw_request_info *info,
2353 struct iw_point *dwrq,
2354 char *extra)
2355 {
2356 struct atmel_private *priv = netdev_priv(dev);
2357 int i;
2358 char *current_ev = extra;
2359 struct iw_event iwe;
2360
2361 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2362 return -EAGAIN;
2363
2364 for (i = 0; i < priv->BSS_list_entries; i++) {
2365 iwe.cmd = SIOCGIWAP;
2366 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2367 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2368 current_ev = iwe_stream_add_event(info, current_ev,
2369 extra + IW_SCAN_MAX_DATA,
2370 &iwe, IW_EV_ADDR_LEN);
2371
2372 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2373 if (iwe.u.data.length > 32)
2374 iwe.u.data.length = 32;
2375 iwe.cmd = SIOCGIWESSID;
2376 iwe.u.data.flags = 1;
2377 current_ev = iwe_stream_add_point(info, current_ev,
2378 extra + IW_SCAN_MAX_DATA,
2379 &iwe, priv->BSSinfo[i].SSID);
2380
2381 iwe.cmd = SIOCGIWMODE;
2382 iwe.u.mode = priv->BSSinfo[i].BSStype;
2383 current_ev = iwe_stream_add_event(info, current_ev,
2384 extra + IW_SCAN_MAX_DATA,
2385 &iwe, IW_EV_UINT_LEN);
2386
2387 iwe.cmd = SIOCGIWFREQ;
2388 iwe.u.freq.m = priv->BSSinfo[i].channel;
2389 iwe.u.freq.e = 0;
2390 current_ev = iwe_stream_add_event(info, current_ev,
2391 extra + IW_SCAN_MAX_DATA,
2392 &iwe, IW_EV_FREQ_LEN);
2393
2394 /* Add quality statistics */
2395 iwe.cmd = IWEVQUAL;
2396 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2397 iwe.u.qual.qual = iwe.u.qual.level;
2398 /* iwe.u.qual.noise = SOMETHING */
2399 current_ev = iwe_stream_add_event(info, current_ev,
2400 extra + IW_SCAN_MAX_DATA,
2401 &iwe, IW_EV_QUAL_LEN);
2402
2403
2404 iwe.cmd = SIOCGIWENCODE;
2405 if (priv->BSSinfo[i].UsingWEP)
2406 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2407 else
2408 iwe.u.data.flags = IW_ENCODE_DISABLED;
2409 iwe.u.data.length = 0;
2410 current_ev = iwe_stream_add_point(info, current_ev,
2411 extra + IW_SCAN_MAX_DATA,
2412 &iwe, NULL);
2413 }
2414
2415 /* Length of data */
2416 dwrq->length = (current_ev - extra);
2417 dwrq->flags = 0;
2418
2419 return 0;
2420 }
2421
2422 static int atmel_get_range(struct net_device *dev,
2423 struct iw_request_info *info,
2424 struct iw_point *dwrq,
2425 char *extra)
2426 {
2427 struct atmel_private *priv = netdev_priv(dev);
2428 struct iw_range *range = (struct iw_range *) extra;
2429 int k, i, j;
2430
2431 dwrq->length = sizeof(struct iw_range);
2432 memset(range, 0, sizeof(struct iw_range));
2433 range->min_nwid = 0x0000;
2434 range->max_nwid = 0x0000;
2435 range->num_channels = 0;
2436 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2437 if (priv->reg_domain == channel_table[j].reg_domain) {
2438 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2439 break;
2440 }
2441 if (range->num_channels != 0) {
2442 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2443 range->freq[k].i = i; /* List index */
2444
2445 /* Values in MHz -> * 10^5 * 10 */
2446 range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2447 100000);
2448 range->freq[k++].e = 1;
2449 }
2450 range->num_frequency = k;
2451 }
2452
2453 range->max_qual.qual = 100;
2454 range->max_qual.level = 100;
2455 range->max_qual.noise = 0;
2456 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2457
2458 range->avg_qual.qual = 50;
2459 range->avg_qual.level = 50;
2460 range->avg_qual.noise = 0;
2461 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2462
2463 range->sensitivity = 0;
2464
2465 range->bitrate[0] = 1000000;
2466 range->bitrate[1] = 2000000;
2467 range->bitrate[2] = 5500000;
2468 range->bitrate[3] = 11000000;
2469 range->num_bitrates = 4;
2470
2471 range->min_rts = 0;
2472 range->max_rts = 2347;
2473 range->min_frag = 256;
2474 range->max_frag = 2346;
2475
2476 range->encoding_size[0] = 5;
2477 range->encoding_size[1] = 13;
2478 range->num_encoding_sizes = 2;
2479 range->max_encoding_tokens = 4;
2480
2481 range->pmp_flags = IW_POWER_ON;
2482 range->pmt_flags = IW_POWER_ON;
2483 range->pm_capa = 0;
2484
2485 range->we_version_source = WIRELESS_EXT;
2486 range->we_version_compiled = WIRELESS_EXT;
2487 range->retry_capa = IW_RETRY_LIMIT ;
2488 range->retry_flags = IW_RETRY_LIMIT;
2489 range->r_time_flags = 0;
2490 range->min_retry = 1;
2491 range->max_retry = 65535;
2492
2493 return 0;
2494 }
2495
2496 static int atmel_set_wap(struct net_device *dev,
2497 struct iw_request_info *info,
2498 struct sockaddr *awrq,
2499 char *extra)
2500 {
2501 struct atmel_private *priv = netdev_priv(dev);
2502 int i;
2503 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2504 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2505 unsigned long flags;
2506
2507 if (awrq->sa_family != ARPHRD_ETHER)
2508 return -EINVAL;
2509
2510 if (!memcmp(any, awrq->sa_data, 6) ||
2511 !memcmp(off, awrq->sa_data, 6)) {
2512 del_timer_sync(&priv->management_timer);
2513 spin_lock_irqsave(&priv->irqlock, flags);
2514 atmel_scan(priv, 1);
2515 spin_unlock_irqrestore(&priv->irqlock, flags);
2516 return 0;
2517 }
2518
2519 for (i = 0; i < priv->BSS_list_entries; i++) {
2520 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2521 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2522 return -EINVAL;
2523 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2524 return -EINVAL;
2525 } else {
2526 del_timer_sync(&priv->management_timer);
2527 spin_lock_irqsave(&priv->irqlock, flags);
2528 atmel_join_bss(priv, i);
2529 spin_unlock_irqrestore(&priv->irqlock, flags);
2530 return 0;
2531 }
2532 }
2533 }
2534
2535 return -EINVAL;
2536 }
2537
2538 static int atmel_config_commit(struct net_device *dev,
2539 struct iw_request_info *info, /* NULL */
2540 void *zwrq, /* NULL */
2541 char *extra) /* NULL */
2542 {
2543 return atmel_open(dev);
2544 }
2545
2546 static const iw_handler atmel_handler[] =
2547 {
2548 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
2549 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
2550 (iw_handler) NULL, /* SIOCSIWNWID */
2551 (iw_handler) NULL, /* SIOCGIWNWID */
2552 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2553 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2554 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2555 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
2556 (iw_handler) NULL, /* SIOCSIWSENS */
2557 (iw_handler) NULL, /* SIOCGIWSENS */
2558 (iw_handler) NULL, /* SIOCSIWRANGE */
2559 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2560 (iw_handler) NULL, /* SIOCSIWPRIV */
2561 (iw_handler) NULL, /* SIOCGIWPRIV */
2562 (iw_handler) NULL, /* SIOCSIWSTATS */
2563 (iw_handler) NULL, /* SIOCGIWSTATS */
2564 (iw_handler) NULL, /* SIOCSIWSPY */
2565 (iw_handler) NULL, /* SIOCGIWSPY */
2566 (iw_handler) NULL, /* -- hole -- */
2567 (iw_handler) NULL, /* -- hole -- */
2568 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2569 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2570 (iw_handler) NULL, /* -- hole -- */
2571 (iw_handler) NULL, /* SIOCGIWAPLIST */
2572 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2573 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2574 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2575 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
2576 (iw_handler) NULL, /* SIOCSIWNICKN */
2577 (iw_handler) NULL, /* SIOCGIWNICKN */
2578 (iw_handler) NULL, /* -- hole -- */
2579 (iw_handler) NULL, /* -- hole -- */
2580 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2581 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2582 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2583 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2584 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2585 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
2586 (iw_handler) NULL, /* SIOCSIWTXPOW */
2587 (iw_handler) NULL, /* SIOCGIWTXPOW */
2588 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2589 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2590 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2591 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2592 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2593 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
2594 (iw_handler) NULL, /* -- hole -- */
2595 (iw_handler) NULL, /* -- hole -- */
2596 (iw_handler) NULL, /* SIOCSIWGENIE */
2597 (iw_handler) NULL, /* SIOCGIWGENIE */
2598 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2599 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2600 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2601 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2602 (iw_handler) NULL, /* SIOCSIWPMKSA */
2603 };
2604
2605 static const iw_handler atmel_private_handler[] =
2606 {
2607 NULL, /* SIOCIWFIRSTPRIV */
2608 };
2609
2610 typedef struct atmel_priv_ioctl {
2611 char id[32];
2612 unsigned char __user *data;
2613 unsigned short len;
2614 } atmel_priv_ioctl;
2615
2616 #define ATMELFWL SIOCIWFIRSTPRIV
2617 #define ATMELIDIFC ATMELFWL + 1
2618 #define ATMELRD ATMELFWL + 2
2619 #define ATMELMAGIC 0x51807
2620 #define REGDOMAINSZ 20
2621
2622 static const struct iw_priv_args atmel_private_args[] = {
2623 {
2624 .cmd = ATMELFWL,
2625 .set_args = IW_PRIV_TYPE_BYTE
2626 | IW_PRIV_SIZE_FIXED
2627 | sizeof (atmel_priv_ioctl),
2628 .get_args = IW_PRIV_TYPE_NONE,
2629 .name = "atmelfwl"
2630 }, {
2631 .cmd = ATMELIDIFC,
2632 .set_args = IW_PRIV_TYPE_NONE,
2633 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2634 .name = "atmelidifc"
2635 }, {
2636 .cmd = ATMELRD,
2637 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2638 .get_args = IW_PRIV_TYPE_NONE,
2639 .name = "regdomain"
2640 },
2641 };
2642
2643 static const struct iw_handler_def atmel_handler_def = {
2644 .num_standard = ARRAY_SIZE(atmel_handler),
2645 .num_private = ARRAY_SIZE(atmel_private_handler),
2646 .num_private_args = ARRAY_SIZE(atmel_private_args),
2647 .standard = (iw_handler *) atmel_handler,
2648 .private = (iw_handler *) atmel_private_handler,
2649 .private_args = (struct iw_priv_args *) atmel_private_args,
2650 .get_wireless_stats = atmel_get_wireless_stats
2651 };
2652
2653 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2654 {
2655 int i, rc = 0;
2656 struct atmel_private *priv = netdev_priv(dev);
2657 atmel_priv_ioctl com;
2658 struct iwreq *wrq = (struct iwreq *) rq;
2659 unsigned char *new_firmware;
2660 char domain[REGDOMAINSZ + 1];
2661
2662 switch (cmd) {
2663 case ATMELIDIFC:
2664 wrq->u.param.value = ATMELMAGIC;
2665 break;
2666
2667 case ATMELFWL:
2668 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2669 rc = -EFAULT;
2670 break;
2671 }
2672
2673 if (!capable(CAP_NET_ADMIN)) {
2674 rc = -EPERM;
2675 break;
2676 }
2677
2678 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2679 rc = -ENOMEM;
2680 break;
2681 }
2682
2683 if (copy_from_user(new_firmware, com.data, com.len)) {
2684 kfree(new_firmware);
2685 rc = -EFAULT;
2686 break;
2687 }
2688
2689 kfree(priv->firmware);
2690
2691 priv->firmware = new_firmware;
2692 priv->firmware_length = com.len;
2693 strncpy(priv->firmware_id, com.id, 31);
2694 priv->firmware_id[31] = '\0';
2695 break;
2696
2697 case ATMELRD:
2698 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2699 rc = -EFAULT;
2700 break;
2701 }
2702
2703 if (!capable(CAP_NET_ADMIN)) {
2704 rc = -EPERM;
2705 break;
2706 }
2707
2708 domain[REGDOMAINSZ] = 0;
2709 rc = -EINVAL;
2710 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2711 /* strcasecmp doesn't exist in the library */
2712 char *a = channel_table[i].name;
2713 char *b = domain;
2714 while (*a) {
2715 char c1 = *a++;
2716 char c2 = *b++;
2717 if (tolower(c1) != tolower(c2))
2718 break;
2719 }
2720 if (!*a && !*b) {
2721 priv->config_reg_domain = channel_table[i].reg_domain;
2722 rc = 0;
2723 }
2724 }
2725
2726 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2727 rc = atmel_open(dev);
2728 break;
2729
2730 default:
2731 rc = -EOPNOTSUPP;
2732 }
2733
2734 return rc;
2735 }
2736
2737 struct auth_body {
2738 __le16 alg;
2739 __le16 trans_seq;
2740 __le16 status;
2741 u8 el_id;
2742 u8 chall_text_len;
2743 u8 chall_text[253];
2744 };
2745
2746 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2747 {
2748 int old_state = priv->station_state;
2749
2750 if (new_state == old_state)
2751 return;
2752
2753 priv->station_state = new_state;
2754
2755 if (new_state == STATION_STATE_READY) {
2756 netif_start_queue(priv->dev);
2757 netif_carrier_on(priv->dev);
2758 }
2759
2760 if (old_state == STATION_STATE_READY) {
2761 netif_carrier_off(priv->dev);
2762 if (netif_running(priv->dev))
2763 netif_stop_queue(priv->dev);
2764 priv->last_beacon_timestamp = 0;
2765 }
2766 }
2767
2768 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2769 {
2770 struct {
2771 u8 BSSID[6];
2772 u8 SSID[MAX_SSID_LENGTH];
2773 u8 scan_type;
2774 u8 channel;
2775 __le16 BSS_type;
2776 __le16 min_channel_time;
2777 __le16 max_channel_time;
2778 u8 options;
2779 u8 SSID_size;
2780 } cmd;
2781
2782 memset(cmd.BSSID, 0xff, 6);
2783
2784 if (priv->fast_scan) {
2785 cmd.SSID_size = priv->SSID_size;
2786 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2787 cmd.min_channel_time = cpu_to_le16(10);
2788 cmd.max_channel_time = cpu_to_le16(50);
2789 } else {
2790 priv->BSS_list_entries = 0;
2791 cmd.SSID_size = 0;
2792 cmd.min_channel_time = cpu_to_le16(10);
2793 cmd.max_channel_time = cpu_to_le16(120);
2794 }
2795
2796 cmd.options = 0;
2797
2798 if (!specific_ssid)
2799 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2800
2801 cmd.channel = (priv->channel & 0x7f);
2802 cmd.scan_type = SCAN_TYPE_ACTIVE;
2803 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2804 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2805
2806 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2807
2808 /* This must come after all hardware access to avoid being messed up
2809 by stuff happening in interrupt context after we leave STATE_DOWN */
2810 atmel_enter_state(priv, STATION_STATE_SCANNING);
2811 }
2812
2813 static void join(struct atmel_private *priv, int type)
2814 {
2815 struct {
2816 u8 BSSID[6];
2817 u8 SSID[MAX_SSID_LENGTH];
2818 u8 BSS_type; /* this is a short in a scan command - weird */
2819 u8 channel;
2820 __le16 timeout;
2821 u8 SSID_size;
2822 u8 reserved;
2823 } cmd;
2824
2825 cmd.SSID_size = priv->SSID_size;
2826 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2827 memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2828 cmd.channel = (priv->channel & 0x7f);
2829 cmd.BSS_type = type;
2830 cmd.timeout = cpu_to_le16(2000);
2831
2832 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2833 }
2834
2835 static void start(struct atmel_private *priv, int type)
2836 {
2837 struct {
2838 u8 BSSID[6];
2839 u8 SSID[MAX_SSID_LENGTH];
2840 u8 BSS_type;
2841 u8 channel;
2842 u8 SSID_size;
2843 u8 reserved[3];
2844 } cmd;
2845
2846 cmd.SSID_size = priv->SSID_size;
2847 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2848 memcpy(cmd.BSSID, priv->BSSID, 6);
2849 cmd.BSS_type = type;
2850 cmd.channel = (priv->channel & 0x7f);
2851
2852 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2853 }
2854
2855 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2856 u8 channel)
2857 {
2858 int rejoin = 0;
2859 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2860 SHORT_PREAMBLE : LONG_PREAMBLE;
2861
2862 if (priv->preamble != new) {
2863 priv->preamble = new;
2864 rejoin = 1;
2865 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2866 }
2867
2868 if (priv->channel != channel) {
2869 priv->channel = channel;
2870 rejoin = 1;
2871 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2872 }
2873
2874 if (rejoin) {
2875 priv->station_is_associated = 0;
2876 atmel_enter_state(priv, STATION_STATE_JOINNING);
2877
2878 if (priv->operating_mode == IW_MODE_INFRA)
2879 join(priv, BSS_TYPE_INFRASTRUCTURE);
2880 else
2881 join(priv, BSS_TYPE_AD_HOC);
2882 }
2883 }
2884
2885 static void send_authentication_request(struct atmel_private *priv, u16 system,
2886 u8 *challenge, int challenge_len)
2887 {
2888 struct ieee80211_hdr header;
2889 struct auth_body auth;
2890
2891 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2892 header.duration_id = cpu_to_le16(0x8000);
2893 header.seq_ctrl = 0;
2894 memcpy(header.addr1, priv->CurrentBSSID, 6);
2895 memcpy(header.addr2, priv->dev->dev_addr, 6);
2896 memcpy(header.addr3, priv->CurrentBSSID, 6);
2897
2898 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2899 /* no WEP for authentication frames with TrSeqNo 1 */
2900 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2901
2902 auth.alg = cpu_to_le16(system);
2903
2904 auth.status = 0;
2905 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2906 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2907 priv->CurrentAuthentTransactionSeqNum += 2;
2908
2909 if (challenge_len != 0) {
2910 auth.el_id = 16; /* challenge_text */
2911 auth.chall_text_len = challenge_len;
2912 memcpy(auth.chall_text, challenge, challenge_len);
2913 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2914 } else {
2915 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2916 }
2917 }
2918
2919 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2920 {
2921 u8 *ssid_el_p;
2922 int bodysize;
2923 struct ieee80211_hdr header;
2924 struct ass_req_format {
2925 __le16 capability;
2926 __le16 listen_interval;
2927 u8 ap[6]; /* nothing after here directly accessible */
2928 u8 ssid_el_id;
2929 u8 ssid_len;
2930 u8 ssid[MAX_SSID_LENGTH];
2931 u8 sup_rates_el_id;
2932 u8 sup_rates_len;
2933 u8 rates[4];
2934 } body;
2935
2936 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2937 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2938 header.duration_id = cpu_to_le16(0x8000);
2939 header.seq_ctrl = 0;
2940
2941 memcpy(header.addr1, priv->CurrentBSSID, 6);
2942 memcpy(header.addr2, priv->dev->dev_addr, 6);
2943 memcpy(header.addr3, priv->CurrentBSSID, 6);
2944
2945 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2946 if (priv->wep_is_on)
2947 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2948 if (priv->preamble == SHORT_PREAMBLE)
2949 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2950
2951 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2952
2953 /* current AP address - only in reassoc frame */
2954 if (is_reassoc) {
2955 memcpy(body.ap, priv->CurrentBSSID, 6);
2956 ssid_el_p = (u8 *)&body.ssid_el_id;
2957 bodysize = 18 + priv->SSID_size;
2958 } else {
2959 ssid_el_p = (u8 *)&body.ap[0];
2960 bodysize = 12 + priv->SSID_size;
2961 }
2962
2963 ssid_el_p[0] = WLAN_EID_SSID;
2964 ssid_el_p[1] = priv->SSID_size;
2965 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2966 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2967 ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2968 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2969
2970 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2971 }
2972
2973 static int is_frame_from_current_bss(struct atmel_private *priv,
2974 struct ieee80211_hdr *header)
2975 {
2976 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2977 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2978 else
2979 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2980 }
2981
2982 static int retrieve_bss(struct atmel_private *priv)
2983 {
2984 int i;
2985 int max_rssi = -128;
2986 int max_index = -1;
2987
2988 if (priv->BSS_list_entries == 0)
2989 return -1;
2990
2991 if (priv->connect_to_any_BSS) {
2992 /* Select a BSS with the max-RSSI but of the same type and of
2993 the same WEP mode and that it is not marked as 'bad' (i.e.
2994 we had previously failed to connect to this BSS with the
2995 settings that we currently use) */
2996 priv->current_BSS = 0;
2997 for (i = 0; i < priv->BSS_list_entries; i++) {
2998 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2999 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
3000 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
3001 !(priv->BSSinfo[i].channel & 0x80)) {
3002 max_rssi = priv->BSSinfo[i].RSSI;
3003 priv->current_BSS = max_index = i;
3004 }
3005 }
3006 return max_index;
3007 }
3008
3009 for (i = 0; i < priv->BSS_list_entries; i++) {
3010 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3011 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3012 priv->operating_mode == priv->BSSinfo[i].BSStype &&
3013 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3014 if (priv->BSSinfo[i].RSSI >= max_rssi) {
3015 max_rssi = priv->BSSinfo[i].RSSI;
3016 max_index = i;
3017 }
3018 }
3019 }
3020 return max_index;
3021 }
3022
3023 static void store_bss_info(struct atmel_private *priv,
3024 struct ieee80211_hdr *header, u16 capability,
3025 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3026 u8 *ssid, int is_beacon)
3027 {
3028 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3029 int i, index;
3030
3031 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3032 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
3033 index = i;
3034
3035 /* If we process a probe and an entry from this BSS exists
3036 we will update the BSS entry with the info from this BSS.
3037 If we process a beacon we will only update RSSI */
3038
3039 if (index == -1) {
3040 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3041 return;
3042 index = priv->BSS_list_entries++;
3043 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3044 priv->BSSinfo[index].RSSI = rssi;
3045 } else {
3046 if (rssi > priv->BSSinfo[index].RSSI)
3047 priv->BSSinfo[index].RSSI = rssi;
3048 if (is_beacon)
3049 return;
3050 }
3051
3052 priv->BSSinfo[index].channel = channel;
3053 priv->BSSinfo[index].beacon_period = beacon_period;
3054 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3055 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3056 priv->BSSinfo[index].SSIDsize = ssid_len;
3057
3058 if (capability & WLAN_CAPABILITY_IBSS)
3059 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3060 else if (capability & WLAN_CAPABILITY_ESS)
3061 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3062
3063 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3064 SHORT_PREAMBLE : LONG_PREAMBLE;
3065 }
3066
3067 static void authenticate(struct atmel_private *priv, u16 frame_len)
3068 {
3069 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3070 u16 status = le16_to_cpu(auth->status);
3071 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3072 u16 system = le16_to_cpu(auth->alg);
3073
3074 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3075 /* no WEP */
3076 if (priv->station_was_associated) {
3077 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3078 send_association_request(priv, 1);
3079 return;
3080 } else {
3081 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3082 send_association_request(priv, 0);
3083 return;
3084 }
3085 }
3086
3087 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3088 int should_associate = 0;
3089 /* WEP */
3090 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3091 return;
3092
3093 if (system == WLAN_AUTH_OPEN) {
3094 if (trans_seq_no == 0x0002) {
3095 should_associate = 1;
3096 }
3097 } else if (system == WLAN_AUTH_SHARED_KEY) {
3098 if (trans_seq_no == 0x0002 &&
3099 auth->el_id == WLAN_EID_CHALLENGE) {
3100 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3101 return;
3102 } else if (trans_seq_no == 0x0004) {
3103 should_associate = 1;
3104 }
3105 }
3106
3107 if (should_associate) {
3108 if (priv->station_was_associated) {
3109 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3110 send_association_request(priv, 1);
3111 return;
3112 } else {
3113 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3114 send_association_request(priv, 0);
3115 return;
3116 }
3117 }
3118 }
3119
3120 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3121 /* Flip back and forth between WEP auth modes until the max
3122 * authentication tries has been exceeded.
3123 */
3124 if (system == WLAN_AUTH_OPEN) {
3125 priv->CurrentAuthentTransactionSeqNum = 0x001;
3126 priv->exclude_unencrypted = 1;
3127 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3128 return;
3129 } else if (system == WLAN_AUTH_SHARED_KEY
3130 && priv->wep_is_on) {
3131 priv->CurrentAuthentTransactionSeqNum = 0x001;
3132 priv->exclude_unencrypted = 0;
3133 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3134 return;
3135 } else if (priv->connect_to_any_BSS) {
3136 int bss_index;
3137
3138 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3139
3140 if ((bss_index = retrieve_bss(priv)) != -1) {
3141 atmel_join_bss(priv, bss_index);
3142 return;
3143 }
3144 }
3145 }
3146
3147 priv->AuthenticationRequestRetryCnt = 0;
3148 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3149 priv->station_is_associated = 0;
3150 }
3151
3152 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3153 {
3154 struct ass_resp_format {
3155 __le16 capability;
3156 __le16 status;
3157 __le16 ass_id;
3158 u8 el_id;
3159 u8 length;
3160 u8 rates[4];
3161 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3162
3163 u16 status = le16_to_cpu(ass_resp->status);
3164 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3165 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3166
3167 union iwreq_data wrqu;
3168
3169 if (frame_len < 8 + rates_len)
3170 return;
3171
3172 if (status == WLAN_STATUS_SUCCESS) {
3173 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3174 priv->AssociationRequestRetryCnt = 0;
3175 else
3176 priv->ReAssociationRequestRetryCnt = 0;
3177
3178 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3179 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3180 atmel_set_mib(priv, Phy_Mib_Type,
3181 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3182 if (priv->power_mode == 0) {
3183 priv->listen_interval = 1;
3184 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3185 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3186 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3187 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3188 } else {
3189 priv->listen_interval = 2;
3190 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3191 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3192 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3193 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3194 }
3195
3196 priv->station_is_associated = 1;
3197 priv->station_was_associated = 1;
3198 atmel_enter_state(priv, STATION_STATE_READY);
3199
3200 /* Send association event to userspace */
3201 wrqu.data.length = 0;
3202 wrqu.data.flags = 0;
3203 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3204 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3205 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3206
3207 return;
3208 }
3209
3210 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3211 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3212 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3213 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3214 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3215 priv->AssociationRequestRetryCnt++;
3216 send_association_request(priv, 0);
3217 return;
3218 }
3219
3220 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3221 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3222 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3223 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3224 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3225 priv->ReAssociationRequestRetryCnt++;
3226 send_association_request(priv, 1);
3227 return;
3228 }
3229
3230 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3231 priv->station_is_associated = 0;
3232
3233 if (priv->connect_to_any_BSS) {
3234 int bss_index;
3235 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3236
3237 if ((bss_index = retrieve_bss(priv)) != -1)
3238 atmel_join_bss(priv, bss_index);
3239 }
3240 }
3241
3242 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3243 {
3244 struct bss_info *bss = &priv->BSSinfo[bss_index];
3245
3246 memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3247 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3248
3249 /* The WPA stuff cares about the current AP address */
3250 if (priv->use_wpa)
3251 build_wpa_mib(priv);
3252
3253 /* When switching to AdHoc turn OFF Power Save if needed */
3254
3255 if (bss->BSStype == IW_MODE_ADHOC &&
3256 priv->operating_mode != IW_MODE_ADHOC &&
3257 priv->power_mode) {
3258 priv->power_mode = 0;
3259 priv->listen_interval = 1;
3260 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3261 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3262 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3263 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3264 }
3265
3266 priv->operating_mode = bss->BSStype;
3267 priv->channel = bss->channel & 0x7f;
3268 priv->beacon_period = bss->beacon_period;
3269
3270 if (priv->preamble != bss->preamble) {
3271 priv->preamble = bss->preamble;
3272 atmel_set_mib8(priv, Local_Mib_Type,
3273 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3274 }
3275
3276 if (!priv->wep_is_on && bss->UsingWEP) {
3277 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3278 priv->station_is_associated = 0;
3279 return;
3280 }
3281
3282 if (priv->wep_is_on && !bss->UsingWEP) {
3283 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3284 priv->station_is_associated = 0;
3285 return;
3286 }
3287
3288 atmel_enter_state(priv, STATION_STATE_JOINNING);
3289
3290 if (priv->operating_mode == IW_MODE_INFRA)
3291 join(priv, BSS_TYPE_INFRASTRUCTURE);
3292 else
3293 join(priv, BSS_TYPE_AD_HOC);
3294 }
3295
3296 static void restart_search(struct atmel_private *priv)
3297 {
3298 int bss_index;
3299
3300 if (!priv->connect_to_any_BSS) {
3301 atmel_scan(priv, 1);
3302 } else {
3303 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3304
3305 if ((bss_index = retrieve_bss(priv)) != -1)
3306 atmel_join_bss(priv, bss_index);
3307 else
3308 atmel_scan(priv, 0);
3309 }
3310 }
3311
3312 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3313 {
3314 u8 old = priv->wstats.qual.level;
3315 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3316
3317 switch (priv->firmware_type) {
3318 case ATMEL_FW_TYPE_502E:
3319 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3320 break;
3321 default:
3322 break;
3323 }
3324
3325 rssi = rssi * 100 / max_rssi;
3326 if ((rssi + old) % 2)
3327 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3328 else
3329 priv->wstats.qual.level = (rssi + old) / 2;
3330 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3331 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3332 }
3333
3334 static void atmel_smooth_qual(struct atmel_private *priv)
3335 {
3336 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3337 while (time_diff--) {
3338 priv->last_qual += HZ;
3339 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3340 priv->wstats.qual.qual +=
3341 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3342 priv->beacons_this_sec = 0;
3343 }
3344 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3345 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3346 }
3347
3348 /* deals with incoming management frames. */
3349 static void atmel_management_frame(struct atmel_private *priv,
3350 struct ieee80211_hdr *header,
3351 u16 frame_len, u8 rssi)
3352 {
3353 u16 subtype;
3354
3355 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3356 switch (subtype) {
3357 case IEEE80211_STYPE_BEACON:
3358 case IEEE80211_STYPE_PROBE_RESP:
3359
3360 /* beacon frame has multiple variable-length fields -
3361 never let an engineer loose with a data structure design. */
3362 {
3363 struct beacon_format {
3364 __le64 timestamp;
3365 __le16 interval;
3366 __le16 capability;
3367 u8 ssid_el_id;
3368 u8 ssid_length;
3369 /* ssid here */
3370 u8 rates_el_id;
3371 u8 rates_length;
3372 /* rates here */
3373 u8 ds_el_id;
3374 u8 ds_length;
3375 /* ds here */
3376 } *beacon = (struct beacon_format *)priv->rx_buf;
3377
3378 u8 channel, rates_length, ssid_length;
3379 u64 timestamp = le64_to_cpu(beacon->timestamp);
3380 u16 beacon_interval = le16_to_cpu(beacon->interval);
3381 u16 capability = le16_to_cpu(beacon->capability);
3382 u8 *beaconp = priv->rx_buf;
3383 ssid_length = beacon->ssid_length;
3384 /* this blows chunks. */
3385 if (frame_len < 14 || frame_len < ssid_length + 15)
3386 return;
3387 rates_length = beaconp[beacon->ssid_length + 15];
3388 if (frame_len < ssid_length + rates_length + 18)
3389 return;
3390 if (ssid_length > MAX_SSID_LENGTH)
3391 return;
3392 channel = beaconp[ssid_length + rates_length + 18];
3393
3394 if (priv->station_state == STATION_STATE_READY) {
3395 smooth_rssi(priv, rssi);
3396 if (is_frame_from_current_bss(priv, header)) {
3397 priv->beacons_this_sec++;
3398 atmel_smooth_qual(priv);
3399 if (priv->last_beacon_timestamp) {
3400 /* Note truncate this to 32 bits - kernel can't divide a long long */
3401 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3402 int beacons = beacon_delay / (beacon_interval * 1000);
3403 if (beacons > 1)
3404 priv->wstats.miss.beacon += beacons - 1;
3405 }
3406 priv->last_beacon_timestamp = timestamp;
3407 handle_beacon_probe(priv, capability, channel);
3408 }
3409 }
3410
3411 if (priv->station_state == STATION_STATE_SCANNING)
3412 store_bss_info(priv, header, capability,
3413 beacon_interval, channel, rssi,
3414 ssid_length,
3415 &beacon->rates_el_id,
3416 subtype == IEEE80211_STYPE_BEACON);
3417 }
3418 break;
3419
3420 case IEEE80211_STYPE_AUTH:
3421
3422 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3423 authenticate(priv, frame_len);
3424
3425 break;
3426
3427 case IEEE80211_STYPE_ASSOC_RESP:
3428 case IEEE80211_STYPE_REASSOC_RESP:
3429
3430 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3431 priv->station_state == STATION_STATE_REASSOCIATING)
3432 associate(priv, frame_len, subtype);
3433
3434 break;
3435
3436 case IEEE80211_STYPE_DISASSOC:
3437 if (priv->station_is_associated &&
3438 priv->operating_mode == IW_MODE_INFRA &&
3439 is_frame_from_current_bss(priv, header)) {
3440 priv->station_was_associated = 0;
3441 priv->station_is_associated = 0;
3442
3443 atmel_enter_state(priv, STATION_STATE_JOINNING);
3444 join(priv, BSS_TYPE_INFRASTRUCTURE);
3445 }
3446
3447 break;
3448
3449 case IEEE80211_STYPE_DEAUTH:
3450 if (priv->operating_mode == IW_MODE_INFRA &&
3451 is_frame_from_current_bss(priv, header)) {
3452 priv->station_was_associated = 0;
3453
3454 atmel_enter_state(priv, STATION_STATE_JOINNING);
3455 join(priv, BSS_TYPE_INFRASTRUCTURE);
3456 }
3457
3458 break;
3459 }
3460 }
3461
3462 /* run when timer expires */
3463 static void atmel_management_timer(u_long a)
3464 {
3465 struct net_device *dev = (struct net_device *) a;
3466 struct atmel_private *priv = netdev_priv(dev);
3467 unsigned long flags;
3468
3469 /* Check if the card has been yanked. */
3470 if (priv->card && priv->present_callback &&
3471 !(*priv->present_callback)(priv->card))
3472 return;
3473
3474 spin_lock_irqsave(&priv->irqlock, flags);
3475
3476 switch (priv->station_state) {
3477
3478 case STATION_STATE_AUTHENTICATING:
3479 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3480 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3481 priv->station_is_associated = 0;
3482 priv->AuthenticationRequestRetryCnt = 0;
3483 restart_search(priv);
3484 } else {
3485 int auth = WLAN_AUTH_OPEN;
3486 priv->AuthenticationRequestRetryCnt++;
3487 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3488 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3489 if (priv->wep_is_on && priv->exclude_unencrypted)
3490 auth = WLAN_AUTH_SHARED_KEY;
3491 send_authentication_request(priv, auth, NULL, 0);
3492 }
3493 break;
3494
3495 case STATION_STATE_ASSOCIATING:
3496 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3497 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3498 priv->station_is_associated = 0;
3499 priv->AssociationRequestRetryCnt = 0;
3500 restart_search(priv);
3501 } else {
3502 priv->AssociationRequestRetryCnt++;
3503 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3504 send_association_request(priv, 0);
3505 }
3506 break;
3507
3508 case STATION_STATE_REASSOCIATING:
3509 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3510 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3511 priv->station_is_associated = 0;
3512 priv->ReAssociationRequestRetryCnt = 0;
3513 restart_search(priv);
3514 } else {
3515 priv->ReAssociationRequestRetryCnt++;
3516 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3517 send_association_request(priv, 1);
3518 }
3519 break;
3520
3521 default:
3522 break;
3523 }
3524
3525 spin_unlock_irqrestore(&priv->irqlock, flags);
3526 }
3527
3528 static void atmel_command_irq(struct atmel_private *priv)
3529 {
3530 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3531 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3532 int fast_scan;
3533 union iwreq_data wrqu;
3534
3535 if (status == CMD_STATUS_IDLE ||
3536 status == CMD_STATUS_IN_PROGRESS)
3537 return;
3538
3539 switch (command) {
3540 case CMD_Start:
3541 if (status == CMD_STATUS_COMPLETE) {
3542 priv->station_was_associated = priv->station_is_associated;
3543 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3544 (u8 *)priv->CurrentBSSID, 6);
3545 atmel_enter_state(priv, STATION_STATE_READY);
3546 }
3547 break;
3548
3549 case CMD_Scan:
3550 fast_scan = priv->fast_scan;
3551 priv->fast_scan = 0;
3552
3553 if (status != CMD_STATUS_COMPLETE) {
3554 atmel_scan(priv, 1);
3555 } else {
3556 int bss_index = retrieve_bss(priv);
3557 int notify_scan_complete = 1;
3558 if (bss_index != -1) {
3559 atmel_join_bss(priv, bss_index);
3560 } else if (priv->operating_mode == IW_MODE_ADHOC &&
3561 priv->SSID_size != 0) {
3562 start(priv, BSS_TYPE_AD_HOC);
3563 } else {
3564 priv->fast_scan = !fast_scan;
3565 atmel_scan(priv, 1);
3566 notify_scan_complete = 0;
3567 }
3568 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3569 if (notify_scan_complete) {
3570 wrqu.data.length = 0;
3571 wrqu.data.flags = 0;
3572 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3573 }
3574 }
3575 break;
3576
3577 case CMD_SiteSurvey:
3578 priv->fast_scan = 0;
3579
3580 if (status != CMD_STATUS_COMPLETE)
3581 return;
3582
3583 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3584 if (priv->station_is_associated) {
3585 atmel_enter_state(priv, STATION_STATE_READY);
3586 wrqu.data.length = 0;
3587 wrqu.data.flags = 0;
3588 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3589 } else {
3590 atmel_scan(priv, 1);
3591 }
3592 break;
3593
3594 case CMD_Join:
3595 if (status == CMD_STATUS_COMPLETE) {
3596 if (priv->operating_mode == IW_MODE_ADHOC) {
3597 priv->station_was_associated = priv->station_is_associated;
3598 atmel_enter_state(priv, STATION_STATE_READY);
3599 } else {
3600 int auth = WLAN_AUTH_OPEN;
3601 priv->AuthenticationRequestRetryCnt = 0;
3602 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3603
3604 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3605 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3606 if (priv->wep_is_on && priv->exclude_unencrypted)
3607 auth = WLAN_AUTH_SHARED_KEY;
3608 send_authentication_request(priv, auth, NULL, 0);
3609 }
3610 return;
3611 }
3612
3613 atmel_scan(priv, 1);
3614 }
3615 }
3616
3617 static int atmel_wakeup_firmware(struct atmel_private *priv)
3618 {
3619 struct host_info_struct *iface = &priv->host_info;
3620 u16 mr1, mr3;
3621 int i;
3622
3623 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3624 atmel_set_gcr(priv->dev, GCR_REMAP);
3625
3626 /* wake up on-board processor */
3627 atmel_clear_gcr(priv->dev, 0x0040);
3628 atmel_write16(priv->dev, BSR, BSS_SRAM);
3629
3630 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3631 mdelay(100);
3632
3633 /* and wait for it */
3634 for (i = LOOP_RETRY_LIMIT; i; i--) {
3635 mr1 = atmel_read16(priv->dev, MR1);
3636 mr3 = atmel_read16(priv->dev, MR3);
3637
3638 if (mr3 & MAC_BOOT_COMPLETE)
3639 break;
3640 if (mr1 & MAC_BOOT_COMPLETE &&
3641 priv->bus_type == BUS_TYPE_PCCARD)
3642 break;
3643 }
3644
3645 if (i == 0) {
3646 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3647 return -EIO;
3648 }
3649
3650 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3651 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3652 return -ENODEV;
3653 }
3654
3655 /* now check for completion of MAC initialization through
3656 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3657 MAC initialization, check completion status, set interrupt mask,
3658 enables interrupts and calls Tx and Rx initialization functions */
3659
3660 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3661
3662 for (i = LOOP_RETRY_LIMIT; i; i--) {
3663 mr1 = atmel_read16(priv->dev, MR1);
3664 mr3 = atmel_read16(priv->dev, MR3);
3665
3666 if (mr3 & MAC_INIT_COMPLETE)
3667 break;
3668 if (mr1 & MAC_INIT_COMPLETE &&
3669 priv->bus_type == BUS_TYPE_PCCARD)
3670 break;
3671 }
3672
3673 if (i == 0) {
3674 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3675 priv->dev->name);
3676 return -EIO;
3677 }
3678
3679 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3680 if ((mr3 & MAC_INIT_COMPLETE) &&
3681 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3682 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3683 return -EIO;
3684 }
3685 if ((mr1 & MAC_INIT_COMPLETE) &&
3686 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3687 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3688 return -EIO;
3689 }
3690
3691 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3692 priv->host_info_base, sizeof(*iface));
3693
3694 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3695 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3696 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3697 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3698 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3699 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3700 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3701 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3702 iface->build_version = le16_to_cpu(iface->build_version);
3703 iface->command_pos = le16_to_cpu(iface->command_pos);
3704 iface->major_version = le16_to_cpu(iface->major_version);
3705 iface->minor_version = le16_to_cpu(iface->minor_version);
3706 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3707 iface->mac_status = le16_to_cpu(iface->mac_status);
3708
3709 return 0;
3710 }
3711
3712 /* determine type of memory and MAC address */
3713 static int probe_atmel_card(struct net_device *dev)
3714 {
3715 int rc = 0;
3716 struct atmel_private *priv = netdev_priv(dev);
3717
3718 /* reset pccard */
3719 if (priv->bus_type == BUS_TYPE_PCCARD)
3720 atmel_write16(dev, GCR, 0x0060);
3721
3722 atmel_write16(dev, GCR, 0x0040);
3723 mdelay(500);
3724
3725 if (atmel_read16(dev, MR2) == 0) {
3726 /* No stored firmware so load a small stub which just
3727 tells us the MAC address */
3728 int i;
3729 priv->card_type = CARD_TYPE_EEPROM;
3730 atmel_write16(dev, BSR, BSS_IRAM);
3731 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3732 atmel_set_gcr(dev, GCR_REMAP);
3733 atmel_clear_gcr(priv->dev, 0x0040);
3734 atmel_write16(dev, BSR, BSS_SRAM);
3735 for (i = LOOP_RETRY_LIMIT; i; i--)
3736 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3737 break;
3738 if (i == 0) {
3739 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3740 } else {
3741 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3742 /* got address, now squash it again until the network
3743 interface is opened */
3744 if (priv->bus_type == BUS_TYPE_PCCARD)
3745 atmel_write16(dev, GCR, 0x0060);
3746 atmel_write16(dev, GCR, 0x0040);
3747 rc = 1;
3748 }
3749 } else if (atmel_read16(dev, MR4) == 0) {
3750 /* Mac address easy in this case. */
3751 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3752 atmel_write16(dev, BSR, 1);
3753 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3754 atmel_write16(dev, BSR, 0x200);
3755 rc = 1;
3756 } else {
3757 /* Standard firmware in flash, boot it up and ask
3758 for the Mac Address */
3759 priv->card_type = CARD_TYPE_SPI_FLASH;
3760 if (atmel_wakeup_firmware(priv) == 0) {
3761 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3762
3763 /* got address, now squash it again until the network
3764 interface is opened */
3765 if (priv->bus_type == BUS_TYPE_PCCARD)
3766 atmel_write16(dev, GCR, 0x0060);
3767 atmel_write16(dev, GCR, 0x0040);
3768 rc = 1;
3769 }
3770 }
3771
3772 if (rc) {
3773 if (dev->dev_addr[0] == 0xFF) {
3774 static const u8 default_mac[] = {
3775 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3776 };
3777 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3778 memcpy(dev->dev_addr, default_mac, 6);
3779 }
3780 }
3781
3782 return rc;
3783 }
3784
3785 /* Move the encyption information on the MIB structure.
3786 This routine is for the pre-WPA firmware: later firmware has
3787 a different format MIB and a different routine. */
3788 static void build_wep_mib(struct atmel_private *priv)
3789 {
3790 struct { /* NB this is matched to the hardware, don't change. */
3791 u8 wep_is_on;
3792 u8 default_key; /* 0..3 */
3793 u8 reserved;
3794 u8 exclude_unencrypted;
3795
3796 u32 WEPICV_error_count;
3797 u32 WEP_excluded_count;
3798
3799 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3800 u8 encryption_level; /* 0, 1, 2 */
3801 u8 reserved2[3];
3802 } mib;
3803 int i;
3804
3805 mib.wep_is_on = priv->wep_is_on;
3806 if (priv->wep_is_on) {
3807 if (priv->wep_key_len[priv->default_key] > 5)
3808 mib.encryption_level = 2;
3809 else
3810 mib.encryption_level = 1;
3811 } else {
3812 mib.encryption_level = 0;
3813 }
3814
3815 mib.default_key = priv->default_key;
3816 mib.exclude_unencrypted = priv->exclude_unencrypted;
3817
3818 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3819 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3820
3821 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3822 }
3823
3824 static void build_wpa_mib(struct atmel_private *priv)
3825 {
3826 /* This is for the later (WPA enabled) firmware. */
3827
3828 struct { /* NB this is matched to the hardware, don't change. */
3829 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3830 u8 receiver_address[6];
3831 u8 wep_is_on;
3832 u8 default_key; /* 0..3 */
3833 u8 group_key;
3834 u8 exclude_unencrypted;
3835 u8 encryption_type;
3836 u8 reserved;
3837
3838 u32 WEPICV_error_count;
3839 u32 WEP_excluded_count;
3840
3841 u8 key_RSC[4][8];
3842 } mib;
3843
3844 int i;
3845
3846 mib.wep_is_on = priv->wep_is_on;
3847 mib.exclude_unencrypted = priv->exclude_unencrypted;
3848 memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3849
3850 /* zero all the keys before adding in valid ones. */
3851 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3852
3853 if (priv->wep_is_on) {
3854 /* There's a comment in the Atmel code to the effect that this
3855 is only valid when still using WEP, it may need to be set to
3856 something to use WPA */
3857 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3858
3859 mib.default_key = mib.group_key = 255;
3860 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3861 if (priv->wep_key_len[i] > 0) {
3862 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3863 if (i == priv->default_key) {
3864 mib.default_key = i;
3865 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3866 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3867 } else {
3868 mib.group_key = i;
3869 priv->group_cipher_suite = priv->pairwise_cipher_suite;
3870 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3871 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3872 }
3873 }
3874 }
3875 if (mib.default_key == 255)
3876 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3877 if (mib.group_key == 255)
3878 mib.group_key = mib.default_key;
3879
3880 }
3881
3882 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3883 }
3884
3885 static int reset_atmel_card(struct net_device *dev)
3886 {
3887 /* do everything necessary to wake up the hardware, including
3888 waiting for the lightning strike and throwing the knife switch....
3889
3890 set all the Mib values which matter in the card to match
3891 their settings in the atmel_private structure. Some of these
3892 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3893 can only be changed by tearing down the world and coming back through
3894 here.
3895
3896 This routine is also responsible for initialising some
3897 hardware-specific fields in the atmel_private structure,
3898 including a copy of the firmware's hostinfo structure
3899 which is the route into the rest of the firmware datastructures. */
3900
3901 struct atmel_private *priv = netdev_priv(dev);
3902 u8 configuration;
3903 int old_state = priv->station_state;
3904 int err = 0;
3905
3906 /* data to add to the firmware names, in priority order
3907 this implemenents firmware versioning */
3908
3909 static char *firmware_modifier[] = {
3910 "-wpa",
3911 "",
3912 NULL
3913 };
3914
3915 /* reset pccard */
3916 if (priv->bus_type == BUS_TYPE_PCCARD)
3917 atmel_write16(priv->dev, GCR, 0x0060);
3918
3919 /* stop card , disable interrupts */
3920 atmel_write16(priv->dev, GCR, 0x0040);
3921
3922 if (priv->card_type == CARD_TYPE_EEPROM) {
3923 /* copy in firmware if needed */
3924 const struct firmware *fw_entry = NULL;
3925 const unsigned char *fw;
3926 int len = priv->firmware_length;
3927 if (!(fw = priv->firmware)) {
3928 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3929 if (strlen(priv->firmware_id) == 0) {
3930 printk(KERN_INFO
3931 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3932 dev->name);
3933 printk(KERN_INFO
3934 "%s: if not, use the firmware= module parameter.\n",
3935 dev->name);
3936 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3937 }
3938 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3939 if (err != 0) {
3940 printk(KERN_ALERT
3941 "%s: firmware %s is missing, cannot continue.\n",
3942 dev->name, priv->firmware_id);
3943 return err;
3944 }
3945 } else {
3946 int fw_index = 0;
3947 int success = 0;
3948
3949 /* get firmware filename entry based on firmware type ID */
3950 while (fw_table[fw_index].fw_type != priv->firmware_type
3951 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3952 fw_index++;
3953
3954 /* construct the actual firmware file name */
3955 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3956 int i;
3957 for (i = 0; firmware_modifier[i]; i++) {
3958 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3959 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3960 priv->firmware_id[31] = '\0';
3961 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3962 success = 1;
3963 break;
3964 }
3965 }
3966 }
3967 if (!success) {
3968 printk(KERN_ALERT
3969 "%s: firmware %s is missing, cannot start.\n",
3970 dev->name, priv->firmware_id);
3971 priv->firmware_id[0] = '\0';
3972 return -ENOENT;
3973 }
3974 }
3975
3976 fw = fw_entry->data;
3977 len = fw_entry->size;
3978 }
3979
3980 if (len <= 0x6000) {
3981 atmel_write16(priv->dev, BSR, BSS_IRAM);
3982 atmel_copy_to_card(priv->dev, 0, fw, len);
3983 atmel_set_gcr(priv->dev, GCR_REMAP);
3984 } else {
3985 /* Remap */
3986 atmel_set_gcr(priv->dev, GCR_REMAP);
3987 atmel_write16(priv->dev, BSR, BSS_IRAM);
3988 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3989 atmel_write16(priv->dev, BSR, 0x2ff);
3990 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3991 }
3992
3993 if (fw_entry)
3994 release_firmware(fw_entry);
3995 }
3996
3997 err = atmel_wakeup_firmware(priv);
3998 if (err != 0)
3999 return err;
4000
4001 /* Check the version and set the correct flag for wpa stuff,
4002 old and new firmware is incompatible.
4003 The pre-wpa 3com firmware reports major version 5,
4004 the wpa 3com firmware is major version 4 and doesn't need
4005 the 3com broken-ness filter. */
4006 priv->use_wpa = (priv->host_info.major_version == 4);
4007 priv->radio_on_broken = (priv->host_info.major_version == 5);
4008
4009 /* unmask all irq sources */
4010 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
4011
4012 /* int Tx system and enable Tx */
4013 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4014 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4015 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4016 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4017
4018 priv->tx_desc_free = priv->host_info.tx_desc_count;
4019 priv->tx_desc_head = 0;
4020 priv->tx_desc_tail = 0;
4021 priv->tx_desc_previous = 0;
4022 priv->tx_free_mem = priv->host_info.tx_buff_size;
4023 priv->tx_buff_head = 0;
4024 priv->tx_buff_tail = 0;
4025
4026 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4027 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4028 configuration | FUNC_CTRL_TxENABLE);
4029
4030 /* init Rx system and enable */
4031 priv->rx_desc_head = 0;
4032
4033 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4034 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4035 configuration | FUNC_CTRL_RxENABLE);
4036
4037 if (!priv->radio_on_broken) {
4038 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4039 CMD_STATUS_REJECTED_RADIO_OFF) {
4040 printk(KERN_INFO "%s: cannot turn the radio on.\n",
4041 dev->name);
4042 return -EIO;
4043 }
4044 }
4045
4046 /* set up enough MIB values to run. */
4047 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4048 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4049 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4050 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4051 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4052 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4053 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4054 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4055 priv->dev->dev_addr, 6);
4056 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4057 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4058 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4059 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4060 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4061 if (priv->use_wpa)
4062 build_wpa_mib(priv);
4063 else
4064 build_wep_mib(priv);
4065
4066 if (old_state == STATION_STATE_READY) {
4067 union iwreq_data wrqu;
4068
4069 wrqu.data.length = 0;
4070 wrqu.data.flags = 0;
4071 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4072 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4073 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4074 }
4075
4076 return 0;
4077 }
4078
4079 static void atmel_send_command(struct atmel_private *priv, int command,
4080 void *cmd, int cmd_size)
4081 {
4082 if (cmd)
4083 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4084 cmd, cmd_size);
4085
4086 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4087 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4088 }
4089
4090 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4091 void *cmd, int cmd_size)
4092 {
4093 int i, status;
4094
4095 atmel_send_command(priv, command, cmd, cmd_size);
4096
4097 for (i = 5000; i; i--) {
4098 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4099 if (status != CMD_STATUS_IDLE &&
4100 status != CMD_STATUS_IN_PROGRESS)
4101 break;
4102 udelay(20);
4103 }
4104
4105 if (i == 0) {
4106 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4107 status = CMD_STATUS_HOST_ERROR;
4108 } else {
4109 if (command != CMD_EnableRadio)
4110 status = CMD_STATUS_COMPLETE;
4111 }
4112
4113 return status;
4114 }
4115
4116 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4117 {
4118 struct get_set_mib m;
4119 m.type = type;
4120 m.size = 1;
4121 m.index = index;
4122
4123 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4124 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4125 }
4126
4127 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4128 {
4129 struct get_set_mib m;
4130 m.type = type;
4131 m.size = 1;
4132 m.index = index;
4133 m.data[0] = data;
4134
4135 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4136 }
4137
4138 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4139 u16 data)
4140 {
4141 struct get_set_mib m;
4142 m.type = type;
4143 m.size = 2;
4144 m.index = index;
4145 m.data[0] = data;
4146 m.data[1] = data >> 8;
4147
4148 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4149 }
4150
4151 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4152 u8 *data, int data_len)
4153 {
4154 struct get_set_mib m;
4155 m.type = type;
4156 m.size = data_len;
4157 m.index = index;
4158
4159 if (data_len > MIB_MAX_DATA_BYTES)
4160 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4161
4162 memcpy(m.data, data, data_len);
4163 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4164 }
4165
4166 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4167 u8 *data, int data_len)
4168 {
4169 struct get_set_mib m;
4170 m.type = type;
4171 m.size = data_len;
4172 m.index = index;
4173
4174 if (data_len > MIB_MAX_DATA_BYTES)
4175 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4176
4177 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4178 atmel_copy_to_host(priv->dev, data,
4179 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4180 }
4181
4182 static void atmel_writeAR(struct net_device *dev, u16 data)
4183 {
4184 int i;
4185 outw(data, dev->base_addr + AR);
4186 /* Address register appears to need some convincing..... */
4187 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4188 outw(data, dev->base_addr + AR);
4189 }
4190
4191 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4192 const unsigned char *src, u16 len)
4193 {
4194 int i;
4195 atmel_writeAR(dev, dest);
4196 if (dest % 2) {
4197 atmel_write8(dev, DR, *src);
4198 src++; len--;
4199 }
4200 for (i = len; i > 1 ; i -= 2) {
4201 u8 lb = *src++;
4202 u8 hb = *src++;
4203 atmel_write16(dev, DR, lb | (hb << 8));
4204 }
4205 if (i)
4206 atmel_write8(dev, DR, *src);
4207 }
4208
4209 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4210 u16 src, u16 len)
4211 {
4212 int i;
4213 atmel_writeAR(dev, src);
4214 if (src % 2) {
4215 *dest = atmel_read8(dev, DR);
4216 dest++; len--;
4217 }
4218 for (i = len; i > 1 ; i -= 2) {
4219 u16 hw = atmel_read16(dev, DR);
4220 *dest++ = hw;
4221 *dest++ = hw >> 8;
4222 }
4223 if (i)
4224 *dest = atmel_read8(dev, DR);
4225 }
4226
4227 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4228 {
4229 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4230 }
4231
4232 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4233 {
4234 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4235 }
4236
4237 static int atmel_lock_mac(struct atmel_private *priv)
4238 {
4239 int i, j = 20;
4240 retry:
4241 for (i = 5000; i; i--) {
4242 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4243 break;
4244 udelay(20);
4245 }
4246
4247 if (!i)
4248 return 0; /* timed out */
4249
4250 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4251 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4252 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4253 if (!j--)
4254 return 0; /* timed out */
4255 goto retry;
4256 }
4257
4258 return 1;
4259 }
4260
4261 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4262 {
4263 atmel_writeAR(priv->dev, pos);
4264 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4265 atmel_write16(priv->dev, DR, data >> 16);
4266 }
4267
4268 /***************************************************************************/
4269 /* There follows the source form of the MAC address reading firmware */
4270 /***************************************************************************/
4271 #if 0
4272
4273 /* Copyright 2003 Matthew T. Russotto */
4274 /* But derived from the Atmel 76C502 firmware written by Atmel and */
4275 /* included in "atmel wireless lan drivers" package */
4276 /**
4277 This file is part of net.russotto.AtmelMACFW, hereto referred to
4278 as AtmelMACFW
4279
4280 AtmelMACFW is free software; you can redistribute it and/or modify
4281 it under the terms of the GNU General Public License version 2
4282 as published by the Free Software Foundation.
4283
4284 AtmelMACFW is distributed in the hope that it will be useful,
4285 but WITHOUT ANY WARRANTY; without even the implied warranty of
4286 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4287 GNU General Public License for more details.
4288
4289 You should have received a copy of the GNU General Public License
4290 along with AtmelMACFW; if not, write to the Free Software
4291 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
4292
4293 ****************************************************************************/
4294 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4295 /* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4296 /* It only works on SPI EEPROM versions of the card. */
4297
4298 /* This firmware initializes the SPI controller and clock, reads the MAC */
4299 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4300 /* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4301 /* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4302 /* MR4, for investigational purposes (maybe we can determine chip type */
4303 /* from that?) */
4304
4305 .org 0
4306 .set MRBASE, 0x8000000
4307 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4308 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4309 .set SRAM_BASE, 0x02000000
4310 .set SP_BASE, 0x0F300000
4311 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4312 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4313 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4314 .set STACK_BASE, 0x5600
4315 .set SP_SR, 0x10
4316 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4317 .set SP_RDRF, 1 /* status register bit -- RDR full */
4318 .set SP_SWRST, 0x80
4319 .set SP_SPIEN, 0x1
4320 .set SP_CR, 0 /* control register */
4321 .set SP_MR, 4 /* mode register */
4322 .set SP_RDR, 0x08 /* Read Data Register */
4323 .set SP_TDR, 0x0C /* Transmit Data Register */
4324 .set SP_CSR0, 0x30 /* chip select registers */
4325 .set SP_CSR1, 0x34
4326 .set SP_CSR2, 0x38
4327 .set SP_CSR3, 0x3C
4328 .set NVRAM_CMD_RDSR, 5 /* read status register */
4329 .set NVRAM_CMD_READ, 3 /* read data */
4330 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4331 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4332 serial output, since SO is normally high. But it
4333 does cause 8 clock cycles and thus 8 bits to be
4334 clocked in to the chip. See Atmel's SPI
4335 controller (e.g. AT91M55800) timing and 4K
4336 SPI EEPROM manuals */
4337
4338 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4339 .set NVRAM_IMAGE, 0x02000200
4340 .set NVRAM_LENGTH, 0x0200
4341 .set MAC_ADDRESS_MIB, SRAM_BASE
4342 .set MAC_ADDRESS_LENGTH, 6
4343 .set MAC_BOOT_FLAG, 0x10
4344 .set MR1, 0
4345 .set MR2, 4
4346 .set MR3, 8
4347 .set MR4, 0xC
4348 RESET_VECTOR:
4349 b RESET_HANDLER
4350 UNDEF_VECTOR:
4351 b HALT1
4352 SWI_VECTOR:
4353 b HALT1
4354 IABORT_VECTOR:
4355 b HALT1
4356 DABORT_VECTOR:
4357 RESERVED_VECTOR:
4358 b HALT1
4359 IRQ_VECTOR:
4360 b HALT1
4361 FIQ_VECTOR:
4362 b HALT1
4363 HALT1: b HALT1
4364 RESET_HANDLER:
4365 mov r0, #CPSR_INITIAL
4366 msr CPSR_c, r0 /* This is probably unnecessary */
4367
4368 /* I'm guessing this is initializing clock generator electronics for SPI */
4369 ldr r0, =SPI_CGEN_BASE
4370 mov r1, #0
4371 mov r1, r1, lsl #3
4372 orr r1, r1, #0
4373 str r1, [r0]
4374 ldr r1, [r0, #28]
4375 bic r1, r1, #16
4376 str r1, [r0, #28]
4377 mov r1, #1
4378 str r1, [r0, #8]
4379
4380 ldr r0, =MRBASE
4381 mov r1, #0
4382 strh r1, [r0, #MR1]
4383 strh r1, [r0, #MR2]
4384 strh r1, [r0, #MR3]
4385 strh r1, [r0, #MR4]
4386
4387 mov sp, #STACK_BASE
4388 bl SP_INIT
4389 mov r0, #10
4390 bl DELAY9
4391 bl GET_MAC_ADDR
4392 bl GET_WHOLE_NVRAM
4393 ldr r0, =MRBASE
4394 ldr r1, =MAC_ADDRESS_MIB
4395 strh r1, [r0, #MR2]
4396 ldr r1, =NVRAM_IMAGE
4397 strh r1, [r0, #MR4]
4398 mov r1, #MAC_BOOT_FLAG
4399 strh r1, [r0, #MR3]
4400 HALT2: b HALT2
4401 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4402 GET_WHOLE_NVRAM:
4403 stmdb sp!, {lr}
4404 mov r2, #0 /* 0th bytes of NVRAM */
4405 mov r3, #NVRAM_LENGTH
4406 mov r1, #0 /* not used in routine */
4407 ldr r0, =NVRAM_IMAGE
4408 bl NVRAM_XFER
4409 ldmia sp!, {lr}
4410 bx lr
4411 .endfunc
4412
4413 .func Get_MAC_Addr, GET_MAC_ADDR
4414 GET_MAC_ADDR:
4415 stmdb sp!, {lr}
4416 mov r2, #0x120 /* address of MAC Address within NVRAM */
4417 mov r3, #MAC_ADDRESS_LENGTH
4418 mov r1, #0 /* not used in routine */
4419 ldr r0, =MAC_ADDRESS_MIB
4420 bl NVRAM_XFER
4421 ldmia sp!, {lr}
4422 bx lr
4423 .endfunc
4424 .ltorg
4425 .func Delay9, DELAY9
4426 DELAY9:
4427 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
4428 DELAYLOOP:
4429 beq DELAY9_done
4430 subs r0, r0, #1
4431 b DELAYLOOP
4432 DELAY9_done:
4433 bx lr
4434 .endfunc
4435
4436 .func SP_Init, SP_INIT
4437 SP_INIT:
4438 mov r1, #SP_SWRST
4439 ldr r0, =SP_BASE
4440 str r1, [r0, #SP_CR] /* reset the SPI */
4441 mov r1, #0
4442 str r1, [r0, #SP_CR] /* release SPI from reset state */
4443 mov r1, #SP_SPIEN
4444 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4445 str r1, [r0, #SP_CR] /* enable the SPI */
4446
4447 /* My guess would be this turns on the SPI clock */
4448 ldr r3, =SPI_CGEN_BASE
4449 ldr r1, [r3, #28]
4450 orr r1, r1, #0x2000
4451 str r1, [r3, #28]
4452
4453 ldr r1, =0x2000c01
4454 str r1, [r0, #SP_CSR0]
4455 ldr r1, =0x2000201
4456 str r1, [r0, #SP_CSR1]
4457 str r1, [r0, #SP_CSR2]
4458 str r1, [r0, #SP_CSR3]
4459 ldr r1, [r0, #SP_SR]
4460 ldr r0, [r0, #SP_RDR]
4461 bx lr
4462 .endfunc
4463 .func NVRAM_Init, NVRAM_INIT
4464 NVRAM_INIT:
4465 ldr r1, =SP_BASE
4466 ldr r0, [r1, #SP_RDR]
4467 mov r0, #NVRAM_CMD_RDSR
4468 str r0, [r1, #SP_TDR]
4469 SP_loop1:
4470 ldr r0, [r1, #SP_SR]
4471 tst r0, #SP_TDRE
4472 beq SP_loop1
4473
4474 mov r0, #SPI_8CLOCKS
4475 str r0, [r1, #SP_TDR]
4476 SP_loop2:
4477 ldr r0, [r1, #SP_SR]
4478 tst r0, #SP_TDRE
4479 beq SP_loop2
4480
4481 ldr r0, [r1, #SP_RDR]
4482 SP_loop3:
4483 ldr r0, [r1, #SP_SR]
4484 tst r0, #SP_RDRF
4485 beq SP_loop3
4486
4487 ldr r0, [r1, #SP_RDR]
4488 and r0, r0, #255
4489 bx lr
4490 .endfunc
4491
4492 .func NVRAM_Xfer, NVRAM_XFER
4493 /* r0 = dest address */
4494 /* r1 = not used */
4495 /* r2 = src address within NVRAM */
4496 /* r3 = length */
4497 NVRAM_XFER:
4498 stmdb sp!, {r4, r5, lr}
4499 mov r5, r0 /* save r0 (dest address) */
4500 mov r4, r3 /* save r3 (length) */
4501 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4502 and r0, r0, #8
4503 add r0, r0, #NVRAM_CMD_READ
4504 ldr r1, =NVRAM_SCRATCH
4505 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4506 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
4507 _local1:
4508 bl NVRAM_INIT
4509 tst r0, #NVRAM_SR_RDY
4510 bne _local1
4511 mov r0, #20
4512 bl DELAY9
4513 mov r2, r4 /* length */
4514 mov r1, r5 /* dest address */
4515 mov r0, #2 /* bytes to transfer in command */
4516 bl NVRAM_XFER2
4517 ldmia sp!, {r4, r5, lr}
4518 bx lr
4519 .endfunc
4520
4521 .func NVRAM_Xfer2, NVRAM_XFER2
4522 NVRAM_XFER2:
4523 stmdb sp!, {r4, r5, r6, lr}
4524 ldr r4, =SP_BASE
4525 mov r3, #0
4526 cmp r0, #0
4527 bls _local2
4528 ldr r5, =NVRAM_SCRATCH
4529 _local4:
4530 ldrb r6, [r5, r3]
4531 str r6, [r4, #SP_TDR]
4532 _local3:
4533 ldr r6, [r4, #SP_SR]
4534 tst r6, #SP_TDRE
4535 beq _local3
4536 add r3, r3, #1
4537 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4538 blo _local4
4539 _local2:
4540 mov r3, #SPI_8CLOCKS
4541 str r3, [r4, #SP_TDR]
4542 ldr r0, [r4, #SP_RDR]
4543 _local5:
4544 ldr r0, [r4, #SP_SR]
4545 tst r0, #SP_RDRF
4546 beq _local5
4547 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 */
4548 mov r0, #0
4549 cmp r2, #0 /* r2 is # of bytes to copy in */
4550 bls _local6
4551 _local7:
4552 ldr r5, [r4, #SP_SR]
4553 tst r5, #SP_TDRE
4554 beq _local7
4555 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
4556 _local8:
4557 ldr r5, [r4, #SP_SR]
4558 tst r5, #SP_RDRF
4559 beq _local8
4560 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4561 strb r5, [r1], #1 /* postindexed */
4562 add r0, r0, #1
4563 cmp r0, r2
4564 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4565 _local6:
4566 mov r0, #200
4567 bl DELAY9
4568 ldmia sp!, {r4, r5, r6, lr}
4569 bx lr
4570 #endif
Linux kernel - Deliverables
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