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Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
[mirror_ubuntu-bionic-kernel.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/uaccess.h>
54 #include <linux/module.h>
55 #include <linux/netdevice.h>
56 #include <linux/etherdevice.h>
57 #include <linux/skbuff.h>
58 #include <linux/if_arp.h>
59 #include <linux/ioport.h>
60 #include <linux/fcntl.h>
61 #include <linux/delay.h>
62 #include <linux/wireless.h>
63 #include <net/iw_handler.h>
64 #include <linux/crc32.h>
65 #include <linux/proc_fs.h>
66 #include <linux/seq_file.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_show(struct seq_file *m, void *v)
1414 {
1415 struct atmel_private *priv = m->private;
1416 int i;
1417 char *s, *r, *c;
1418
1419 seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
1420
1421 if (priv->station_state != STATION_STATE_DOWN) {
1422 seq_printf(m,
1423 "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 seq_puts(m, "on card\n");
1431 else if (priv->firmware)
1432 seq_printf(m, "%s loaded by host\n", priv->firmware_id);
1433 else
1434 seq_printf(m, "%s loaded by hotplug\n", priv->firmware_id);
1435
1436 switch (priv->card_type) {
1437 case CARD_TYPE_PARALLEL_FLASH:
1438 c = "Parallel flash";
1439 break;
1440 case CARD_TYPE_SPI_FLASH:
1441 c = "SPI flash\n";
1442 break;
1443 case CARD_TYPE_EEPROM:
1444 c = "EEPROM";
1445 break;
1446 default:
1447 c = "<unknown>";
1448 }
1449
1450 r = "<unknown>";
1451 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
1452 if (priv->reg_domain == channel_table[i].reg_domain)
1453 r = channel_table[i].name;
1454
1455 seq_printf(m, "MAC memory type:\t%s\n", c);
1456 seq_printf(m, "Regulatory domain:\t%s\n", r);
1457 seq_printf(m, "Host CRC checking:\t%s\n",
1458 priv->do_rx_crc ? "On" : "Off");
1459 seq_printf(m, "WPA-capable firmware:\t%s\n",
1460 priv->use_wpa ? "Yes" : "No");
1461 }
1462
1463 switch (priv->station_state) {
1464 case STATION_STATE_SCANNING:
1465 s = "Scanning";
1466 break;
1467 case STATION_STATE_JOINNING:
1468 s = "Joining";
1469 break;
1470 case STATION_STATE_AUTHENTICATING:
1471 s = "Authenticating";
1472 break;
1473 case STATION_STATE_ASSOCIATING:
1474 s = "Associating";
1475 break;
1476 case STATION_STATE_READY:
1477 s = "Ready";
1478 break;
1479 case STATION_STATE_REASSOCIATING:
1480 s = "Reassociating";
1481 break;
1482 case STATION_STATE_MGMT_ERROR:
1483 s = "Management error";
1484 break;
1485 case STATION_STATE_DOWN:
1486 s = "Down";
1487 break;
1488 default:
1489 s = "<unknown>";
1490 }
1491
1492 seq_printf(m, "Current state:\t\t%s\n", s);
1493 return 0;
1494 }
1495
1496 static int atmel_proc_open(struct inode *inode, struct file *file)
1497 {
1498 return single_open(file, atmel_proc_show, PDE_DATA(inode));
1499 }
1500
1501 static const struct file_operations atmel_proc_fops = {
1502 .open = atmel_proc_open,
1503 .read = seq_read,
1504 .llseek = seq_lseek,
1505 .release = single_release,
1506 };
1507
1508 static const struct net_device_ops atmel_netdev_ops = {
1509 .ndo_open = atmel_open,
1510 .ndo_stop = atmel_close,
1511 .ndo_change_mtu = atmel_change_mtu,
1512 .ndo_set_mac_address = atmel_set_mac_address,
1513 .ndo_start_xmit = start_tx,
1514 .ndo_do_ioctl = atmel_ioctl,
1515 .ndo_validate_addr = eth_validate_addr,
1516 };
1517
1518 struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1519 const AtmelFWType fw_type,
1520 struct device *sys_dev,
1521 int (*card_present)(void *), void *card)
1522 {
1523 struct net_device *dev;
1524 struct atmel_private *priv;
1525 int rc;
1526
1527 /* Create the network device object. */
1528 dev = alloc_etherdev(sizeof(*priv));
1529 if (!dev)
1530 return NULL;
1531
1532 if (dev_alloc_name(dev, dev->name) < 0) {
1533 printk(KERN_ERR "atmel: Couldn't get name!\n");
1534 goto err_out_free;
1535 }
1536
1537 priv = netdev_priv(dev);
1538 priv->dev = dev;
1539 priv->sys_dev = sys_dev;
1540 priv->present_callback = card_present;
1541 priv->card = card;
1542 priv->firmware = NULL;
1543 priv->firmware_id[0] = '\0';
1544 priv->firmware_type = fw_type;
1545 if (firmware) /* module parameter */
1546 strcpy(priv->firmware_id, firmware);
1547 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1548 priv->station_state = STATION_STATE_DOWN;
1549 priv->do_rx_crc = 0;
1550 /* For PCMCIA cards, some chips need CRC, some don't
1551 so we have to probe. */
1552 if (priv->bus_type == BUS_TYPE_PCCARD) {
1553 priv->probe_crc = 1;
1554 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1555 } else
1556 priv->probe_crc = 0;
1557 priv->last_qual = jiffies;
1558 priv->last_beacon_timestamp = 0;
1559 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1560 memset(priv->BSSID, 0, 6);
1561 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1562 priv->station_was_associated = 0;
1563
1564 priv->last_survey = jiffies;
1565 priv->preamble = LONG_PREAMBLE;
1566 priv->operating_mode = IW_MODE_INFRA;
1567 priv->connect_to_any_BSS = 0;
1568 priv->config_reg_domain = 0;
1569 priv->reg_domain = 0;
1570 priv->tx_rate = 3;
1571 priv->auto_tx_rate = 1;
1572 priv->channel = 4;
1573 priv->power_mode = 0;
1574 priv->SSID[0] = '\0';
1575 priv->SSID_size = 0;
1576 priv->new_SSID_size = 0;
1577 priv->frag_threshold = 2346;
1578 priv->rts_threshold = 2347;
1579 priv->short_retry = 7;
1580 priv->long_retry = 4;
1581
1582 priv->wep_is_on = 0;
1583 priv->default_key = 0;
1584 priv->encryption_level = 0;
1585 priv->exclude_unencrypted = 0;
1586 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1587 priv->use_wpa = 0;
1588 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1589 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1590
1591 priv->default_beacon_period = priv->beacon_period = 100;
1592 priv->listen_interval = 1;
1593
1594 init_timer(&priv->management_timer);
1595 spin_lock_init(&priv->irqlock);
1596 spin_lock_init(&priv->timerlock);
1597 priv->management_timer.function = atmel_management_timer;
1598 priv->management_timer.data = (unsigned long) dev;
1599
1600 dev->netdev_ops = &atmel_netdev_ops;
1601 dev->wireless_handlers = &atmel_handler_def;
1602 dev->irq = irq;
1603 dev->base_addr = port;
1604
1605 SET_NETDEV_DEV(dev, sys_dev);
1606
1607 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
1608 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
1609 goto err_out_free;
1610 }
1611
1612 if (!request_region(dev->base_addr, 32,
1613 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
1614 goto err_out_irq;
1615 }
1616
1617 if (register_netdev(dev))
1618 goto err_out_res;
1619
1620 if (!probe_atmel_card(dev)) {
1621 unregister_netdev(dev);
1622 goto err_out_res;
1623 }
1624
1625 netif_carrier_off(dev);
1626
1627 if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv))
1628 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
1629
1630 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1631 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
1632
1633 return dev;
1634
1635 err_out_res:
1636 release_region(dev->base_addr, 32);
1637 err_out_irq:
1638 free_irq(dev->irq, dev);
1639 err_out_free:
1640 free_netdev(dev);
1641 return NULL;
1642 }
1643
1644 EXPORT_SYMBOL(init_atmel_card);
1645
1646 void stop_atmel_card(struct net_device *dev)
1647 {
1648 struct atmel_private *priv = netdev_priv(dev);
1649
1650 /* put a brick on it... */
1651 if (priv->bus_type == BUS_TYPE_PCCARD)
1652 atmel_write16(dev, GCR, 0x0060);
1653 atmel_write16(dev, GCR, 0x0040);
1654
1655 del_timer_sync(&priv->management_timer);
1656 unregister_netdev(dev);
1657 remove_proc_entry("driver/atmel", NULL);
1658 free_irq(dev->irq, dev);
1659 kfree(priv->firmware);
1660 release_region(dev->base_addr, 32);
1661 free_netdev(dev);
1662 }
1663
1664 EXPORT_SYMBOL(stop_atmel_card);
1665
1666 static int atmel_set_essid(struct net_device *dev,
1667 struct iw_request_info *info,
1668 struct iw_point *dwrq,
1669 char *extra)
1670 {
1671 struct atmel_private *priv = netdev_priv(dev);
1672
1673 /* Check if we asked for `any' */
1674 if (dwrq->flags == 0) {
1675 priv->connect_to_any_BSS = 1;
1676 } else {
1677 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1678
1679 priv->connect_to_any_BSS = 0;
1680
1681 /* Check the size of the string */
1682 if (dwrq->length > MAX_SSID_LENGTH)
1683 return -E2BIG;
1684 if (index != 0)
1685 return -EINVAL;
1686
1687 memcpy(priv->new_SSID, extra, dwrq->length);
1688 priv->new_SSID_size = dwrq->length;
1689 }
1690
1691 return -EINPROGRESS;
1692 }
1693
1694 static int atmel_get_essid(struct net_device *dev,
1695 struct iw_request_info *info,
1696 struct iw_point *dwrq,
1697 char *extra)
1698 {
1699 struct atmel_private *priv = netdev_priv(dev);
1700
1701 /* Get the current SSID */
1702 if (priv->new_SSID_size != 0) {
1703 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
1704 dwrq->length = priv->new_SSID_size;
1705 } else {
1706 memcpy(extra, priv->SSID, priv->SSID_size);
1707 dwrq->length = priv->SSID_size;
1708 }
1709
1710 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1711
1712 return 0;
1713 }
1714
1715 static int atmel_get_wap(struct net_device *dev,
1716 struct iw_request_info *info,
1717 struct sockaddr *awrq,
1718 char *extra)
1719 {
1720 struct atmel_private *priv = netdev_priv(dev);
1721 memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1722 awrq->sa_family = ARPHRD_ETHER;
1723
1724 return 0;
1725 }
1726
1727 static int atmel_set_encode(struct net_device *dev,
1728 struct iw_request_info *info,
1729 struct iw_point *dwrq,
1730 char *extra)
1731 {
1732 struct atmel_private *priv = netdev_priv(dev);
1733
1734 /* Basic checking: do we have a key to set ?
1735 * Note : with the new API, it's impossible to get a NULL pointer.
1736 * Therefore, we need to check a key size == 0 instead.
1737 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1738 * when no key is present (only change flags), but older versions
1739 * don't do it. - Jean II */
1740 if (dwrq->length > 0) {
1741 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1742 int current_index = priv->default_key;
1743 /* Check the size of the key */
1744 if (dwrq->length > 13) {
1745 return -EINVAL;
1746 }
1747 /* Check the index (none -> use current) */
1748 if (index < 0 || index >= 4)
1749 index = current_index;
1750 else
1751 priv->default_key = index;
1752 /* Set the length */
1753 if (dwrq->length > 5)
1754 priv->wep_key_len[index] = 13;
1755 else
1756 if (dwrq->length > 0)
1757 priv->wep_key_len[index] = 5;
1758 else
1759 /* Disable the key */
1760 priv->wep_key_len[index] = 0;
1761 /* Check if the key is not marked as invalid */
1762 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
1763 /* Cleanup */
1764 memset(priv->wep_keys[index], 0, 13);
1765 /* Copy the key in the driver */
1766 memcpy(priv->wep_keys[index], extra, dwrq->length);
1767 }
1768 /* WE specify that if a valid key is set, encryption
1769 * should be enabled (user may turn it off later)
1770 * This is also how "iwconfig ethX key on" works */
1771 if (index == current_index &&
1772 priv->wep_key_len[index] > 0) {
1773 priv->wep_is_on = 1;
1774 priv->exclude_unencrypted = 1;
1775 if (priv->wep_key_len[index] > 5) {
1776 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1777 priv->encryption_level = 2;
1778 } else {
1779 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1780 priv->encryption_level = 1;
1781 }
1782 }
1783 } else {
1784 /* Do we want to just set the transmit key index ? */
1785 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1786 if (index >= 0 && index < 4) {
1787 priv->default_key = index;
1788 } else
1789 /* Don't complain if only change the mode */
1790 if (!(dwrq->flags & IW_ENCODE_MODE))
1791 return -EINVAL;
1792 }
1793 /* Read the flags */
1794 if (dwrq->flags & IW_ENCODE_DISABLED) {
1795 priv->wep_is_on = 0;
1796 priv->encryption_level = 0;
1797 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1798 } else {
1799 priv->wep_is_on = 1;
1800 if (priv->wep_key_len[priv->default_key] > 5) {
1801 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1802 priv->encryption_level = 2;
1803 } else {
1804 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1805 priv->encryption_level = 1;
1806 }
1807 }
1808 if (dwrq->flags & IW_ENCODE_RESTRICTED)
1809 priv->exclude_unencrypted = 1;
1810 if (dwrq->flags & IW_ENCODE_OPEN)
1811 priv->exclude_unencrypted = 0;
1812
1813 return -EINPROGRESS; /* Call commit handler */
1814 }
1815
1816 static int atmel_get_encode(struct net_device *dev,
1817 struct iw_request_info *info,
1818 struct iw_point *dwrq,
1819 char *extra)
1820 {
1821 struct atmel_private *priv = netdev_priv(dev);
1822 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1823
1824 if (!priv->wep_is_on)
1825 dwrq->flags = IW_ENCODE_DISABLED;
1826 else {
1827 if (priv->exclude_unencrypted)
1828 dwrq->flags = IW_ENCODE_RESTRICTED;
1829 else
1830 dwrq->flags = IW_ENCODE_OPEN;
1831 }
1832 /* Which key do we want ? -1 -> tx index */
1833 if (index < 0 || index >= 4)
1834 index = priv->default_key;
1835 dwrq->flags |= index + 1;
1836 /* Copy the key to the user buffer */
1837 dwrq->length = priv->wep_key_len[index];
1838 if (dwrq->length > 16) {
1839 dwrq->length = 0;
1840 } else {
1841 memset(extra, 0, 16);
1842 memcpy(extra, priv->wep_keys[index], dwrq->length);
1843 }
1844
1845 return 0;
1846 }
1847
1848 static int atmel_set_encodeext(struct net_device *dev,
1849 struct iw_request_info *info,
1850 union iwreq_data *wrqu,
1851 char *extra)
1852 {
1853 struct atmel_private *priv = netdev_priv(dev);
1854 struct iw_point *encoding = &wrqu->encoding;
1855 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1856 int idx, key_len, alg = ext->alg, set_key = 1;
1857
1858 /* Determine and validate the key index */
1859 idx = encoding->flags & IW_ENCODE_INDEX;
1860 if (idx) {
1861 if (idx < 1 || idx > 4)
1862 return -EINVAL;
1863 idx--;
1864 } else
1865 idx = priv->default_key;
1866
1867 if (encoding->flags & IW_ENCODE_DISABLED)
1868 alg = IW_ENCODE_ALG_NONE;
1869
1870 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1871 priv->default_key = idx;
1872 set_key = ext->key_len > 0 ? 1 : 0;
1873 }
1874
1875 if (set_key) {
1876 /* Set the requested key first */
1877 switch (alg) {
1878 case IW_ENCODE_ALG_NONE:
1879 priv->wep_is_on = 0;
1880 priv->encryption_level = 0;
1881 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1882 break;
1883 case IW_ENCODE_ALG_WEP:
1884 if (ext->key_len > 5) {
1885 priv->wep_key_len[idx] = 13;
1886 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1887 priv->encryption_level = 2;
1888 } else if (ext->key_len > 0) {
1889 priv->wep_key_len[idx] = 5;
1890 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1891 priv->encryption_level = 1;
1892 } else {
1893 return -EINVAL;
1894 }
1895 priv->wep_is_on = 1;
1896 memset(priv->wep_keys[idx], 0, 13);
1897 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1898 memcpy(priv->wep_keys[idx], ext->key, key_len);
1899 break;
1900 default:
1901 return -EINVAL;
1902 }
1903 }
1904
1905 return -EINPROGRESS;
1906 }
1907
1908 static int atmel_get_encodeext(struct net_device *dev,
1909 struct iw_request_info *info,
1910 union iwreq_data *wrqu,
1911 char *extra)
1912 {
1913 struct atmel_private *priv = netdev_priv(dev);
1914 struct iw_point *encoding = &wrqu->encoding;
1915 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1916 int idx, max_key_len;
1917
1918 max_key_len = encoding->length - sizeof(*ext);
1919 if (max_key_len < 0)
1920 return -EINVAL;
1921
1922 idx = encoding->flags & IW_ENCODE_INDEX;
1923 if (idx) {
1924 if (idx < 1 || idx > 4)
1925 return -EINVAL;
1926 idx--;
1927 } else
1928 idx = priv->default_key;
1929
1930 encoding->flags = idx + 1;
1931 memset(ext, 0, sizeof(*ext));
1932
1933 if (!priv->wep_is_on) {
1934 ext->alg = IW_ENCODE_ALG_NONE;
1935 ext->key_len = 0;
1936 encoding->flags |= IW_ENCODE_DISABLED;
1937 } else {
1938 if (priv->encryption_level > 0)
1939 ext->alg = IW_ENCODE_ALG_WEP;
1940 else
1941 return -EINVAL;
1942
1943 ext->key_len = priv->wep_key_len[idx];
1944 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1945 encoding->flags |= IW_ENCODE_ENABLED;
1946 }
1947
1948 return 0;
1949 }
1950
1951 static int atmel_set_auth(struct net_device *dev,
1952 struct iw_request_info *info,
1953 union iwreq_data *wrqu, char *extra)
1954 {
1955 struct atmel_private *priv = netdev_priv(dev);
1956 struct iw_param *param = &wrqu->param;
1957
1958 switch (param->flags & IW_AUTH_INDEX) {
1959 case IW_AUTH_WPA_VERSION:
1960 case IW_AUTH_CIPHER_PAIRWISE:
1961 case IW_AUTH_CIPHER_GROUP:
1962 case IW_AUTH_KEY_MGMT:
1963 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1964 case IW_AUTH_PRIVACY_INVOKED:
1965 /*
1966 * atmel does not use these parameters
1967 */
1968 break;
1969
1970 case IW_AUTH_DROP_UNENCRYPTED:
1971 priv->exclude_unencrypted = param->value ? 1 : 0;
1972 break;
1973
1974 case IW_AUTH_80211_AUTH_ALG: {
1975 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1976 priv->exclude_unencrypted = 1;
1977 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1978 priv->exclude_unencrypted = 0;
1979 } else
1980 return -EINVAL;
1981 break;
1982 }
1983
1984 case IW_AUTH_WPA_ENABLED:
1985 /* Silently accept disable of WPA */
1986 if (param->value > 0)
1987 return -EOPNOTSUPP;
1988 break;
1989
1990 default:
1991 return -EOPNOTSUPP;
1992 }
1993 return -EINPROGRESS;
1994 }
1995
1996 static int atmel_get_auth(struct net_device *dev,
1997 struct iw_request_info *info,
1998 union iwreq_data *wrqu, char *extra)
1999 {
2000 struct atmel_private *priv = netdev_priv(dev);
2001 struct iw_param *param = &wrqu->param;
2002
2003 switch (param->flags & IW_AUTH_INDEX) {
2004 case IW_AUTH_DROP_UNENCRYPTED:
2005 param->value = priv->exclude_unencrypted;
2006 break;
2007
2008 case IW_AUTH_80211_AUTH_ALG:
2009 if (priv->exclude_unencrypted == 1)
2010 param->value = IW_AUTH_ALG_SHARED_KEY;
2011 else
2012 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2013 break;
2014
2015 case IW_AUTH_WPA_ENABLED:
2016 param->value = 0;
2017 break;
2018
2019 default:
2020 return -EOPNOTSUPP;
2021 }
2022 return 0;
2023 }
2024
2025
2026 static int atmel_get_name(struct net_device *dev,
2027 struct iw_request_info *info,
2028 char *cwrq,
2029 char *extra)
2030 {
2031 strcpy(cwrq, "IEEE 802.11-DS");
2032 return 0;
2033 }
2034
2035 static int atmel_set_rate(struct net_device *dev,
2036 struct iw_request_info *info,
2037 struct iw_param *vwrq,
2038 char *extra)
2039 {
2040 struct atmel_private *priv = netdev_priv(dev);
2041
2042 if (vwrq->fixed == 0) {
2043 priv->tx_rate = 3;
2044 priv->auto_tx_rate = 1;
2045 } else {
2046 priv->auto_tx_rate = 0;
2047
2048 /* Which type of value ? */
2049 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
2050 /* Setting by rate index */
2051 priv->tx_rate = vwrq->value;
2052 } else {
2053 /* Setting by frequency value */
2054 switch (vwrq->value) {
2055 case 1000000:
2056 priv->tx_rate = 0;
2057 break;
2058 case 2000000:
2059 priv->tx_rate = 1;
2060 break;
2061 case 5500000:
2062 priv->tx_rate = 2;
2063 break;
2064 case 11000000:
2065 priv->tx_rate = 3;
2066 break;
2067 default:
2068 return -EINVAL;
2069 }
2070 }
2071 }
2072
2073 return -EINPROGRESS;
2074 }
2075
2076 static int atmel_set_mode(struct net_device *dev,
2077 struct iw_request_info *info,
2078 __u32 *uwrq,
2079 char *extra)
2080 {
2081 struct atmel_private *priv = netdev_priv(dev);
2082
2083 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2084 return -EINVAL;
2085
2086 priv->operating_mode = *uwrq;
2087 return -EINPROGRESS;
2088 }
2089
2090 static int atmel_get_mode(struct net_device *dev,
2091 struct iw_request_info *info,
2092 __u32 *uwrq,
2093 char *extra)
2094 {
2095 struct atmel_private *priv = netdev_priv(dev);
2096
2097 *uwrq = priv->operating_mode;
2098 return 0;
2099 }
2100
2101 static int atmel_get_rate(struct net_device *dev,
2102 struct iw_request_info *info,
2103 struct iw_param *vwrq,
2104 char *extra)
2105 {
2106 struct atmel_private *priv = netdev_priv(dev);
2107
2108 if (priv->auto_tx_rate) {
2109 vwrq->fixed = 0;
2110 vwrq->value = 11000000;
2111 } else {
2112 vwrq->fixed = 1;
2113 switch (priv->tx_rate) {
2114 case 0:
2115 vwrq->value = 1000000;
2116 break;
2117 case 1:
2118 vwrq->value = 2000000;
2119 break;
2120 case 2:
2121 vwrq->value = 5500000;
2122 break;
2123 case 3:
2124 vwrq->value = 11000000;
2125 break;
2126 }
2127 }
2128 return 0;
2129 }
2130
2131 static int atmel_set_power(struct net_device *dev,
2132 struct iw_request_info *info,
2133 struct iw_param *vwrq,
2134 char *extra)
2135 {
2136 struct atmel_private *priv = netdev_priv(dev);
2137 priv->power_mode = vwrq->disabled ? 0 : 1;
2138 return -EINPROGRESS;
2139 }
2140
2141 static int atmel_get_power(struct net_device *dev,
2142 struct iw_request_info *info,
2143 struct iw_param *vwrq,
2144 char *extra)
2145 {
2146 struct atmel_private *priv = netdev_priv(dev);
2147 vwrq->disabled = priv->power_mode ? 0 : 1;
2148 vwrq->flags = IW_POWER_ON;
2149 return 0;
2150 }
2151
2152 static int atmel_set_retry(struct net_device *dev,
2153 struct iw_request_info *info,
2154 struct iw_param *vwrq,
2155 char *extra)
2156 {
2157 struct atmel_private *priv = netdev_priv(dev);
2158
2159 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
2160 if (vwrq->flags & IW_RETRY_LONG)
2161 priv->long_retry = vwrq->value;
2162 else if (vwrq->flags & IW_RETRY_SHORT)
2163 priv->short_retry = vwrq->value;
2164 else {
2165 /* No modifier : set both */
2166 priv->long_retry = vwrq->value;
2167 priv->short_retry = vwrq->value;
2168 }
2169 return -EINPROGRESS;
2170 }
2171
2172 return -EINVAL;
2173 }
2174
2175 static int atmel_get_retry(struct net_device *dev,
2176 struct iw_request_info *info,
2177 struct iw_param *vwrq,
2178 char *extra)
2179 {
2180 struct atmel_private *priv = netdev_priv(dev);
2181
2182 vwrq->disabled = 0; /* Can't be disabled */
2183
2184 /* Note : by default, display the short retry number */
2185 if (vwrq->flags & IW_RETRY_LONG) {
2186 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
2187 vwrq->value = priv->long_retry;
2188 } else {
2189 vwrq->flags = IW_RETRY_LIMIT;
2190 vwrq->value = priv->short_retry;
2191 if (priv->long_retry != priv->short_retry)
2192 vwrq->flags |= IW_RETRY_SHORT;
2193 }
2194
2195 return 0;
2196 }
2197
2198 static int atmel_set_rts(struct net_device *dev,
2199 struct iw_request_info *info,
2200 struct iw_param *vwrq,
2201 char *extra)
2202 {
2203 struct atmel_private *priv = netdev_priv(dev);
2204 int rthr = vwrq->value;
2205
2206 if (vwrq->disabled)
2207 rthr = 2347;
2208 if ((rthr < 0) || (rthr > 2347)) {
2209 return -EINVAL;
2210 }
2211 priv->rts_threshold = rthr;
2212
2213 return -EINPROGRESS; /* Call commit handler */
2214 }
2215
2216 static int atmel_get_rts(struct net_device *dev,
2217 struct iw_request_info *info,
2218 struct iw_param *vwrq,
2219 char *extra)
2220 {
2221 struct atmel_private *priv = netdev_priv(dev);
2222
2223 vwrq->value = priv->rts_threshold;
2224 vwrq->disabled = (vwrq->value >= 2347);
2225 vwrq->fixed = 1;
2226
2227 return 0;
2228 }
2229
2230 static int atmel_set_frag(struct net_device *dev,
2231 struct iw_request_info *info,
2232 struct iw_param *vwrq,
2233 char *extra)
2234 {
2235 struct atmel_private *priv = netdev_priv(dev);
2236 int fthr = vwrq->value;
2237
2238 if (vwrq->disabled)
2239 fthr = 2346;
2240 if ((fthr < 256) || (fthr > 2346)) {
2241 return -EINVAL;
2242 }
2243 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2244 priv->frag_threshold = fthr;
2245
2246 return -EINPROGRESS; /* Call commit handler */
2247 }
2248
2249 static int atmel_get_frag(struct net_device *dev,
2250 struct iw_request_info *info,
2251 struct iw_param *vwrq,
2252 char *extra)
2253 {
2254 struct atmel_private *priv = netdev_priv(dev);
2255
2256 vwrq->value = priv->frag_threshold;
2257 vwrq->disabled = (vwrq->value >= 2346);
2258 vwrq->fixed = 1;
2259
2260 return 0;
2261 }
2262
2263 static int atmel_set_freq(struct net_device *dev,
2264 struct iw_request_info *info,
2265 struct iw_freq *fwrq,
2266 char *extra)
2267 {
2268 struct atmel_private *priv = netdev_priv(dev);
2269 int rc = -EINPROGRESS; /* Call commit handler */
2270
2271 /* If setting by frequency, convert to a channel */
2272 if (fwrq->e == 1) {
2273 int f = fwrq->m / 100000;
2274
2275 /* Hack to fall through... */
2276 fwrq->e = 0;
2277 fwrq->m = ieee80211_freq_to_dsss_chan(f);
2278 }
2279 /* Setting by channel number */
2280 if ((fwrq->m > 1000) || (fwrq->e > 0))
2281 rc = -EOPNOTSUPP;
2282 else {
2283 int channel = fwrq->m;
2284 if (atmel_validate_channel(priv, channel) == 0) {
2285 priv->channel = channel;
2286 } else {
2287 rc = -EINVAL;
2288 }
2289 }
2290 return rc;
2291 }
2292
2293 static int atmel_get_freq(struct net_device *dev,
2294 struct iw_request_info *info,
2295 struct iw_freq *fwrq,
2296 char *extra)
2297 {
2298 struct atmel_private *priv = netdev_priv(dev);
2299
2300 fwrq->m = priv->channel;
2301 fwrq->e = 0;
2302 return 0;
2303 }
2304
2305 static int atmel_set_scan(struct net_device *dev,
2306 struct iw_request_info *info,
2307 struct iw_point *dwrq,
2308 char *extra)
2309 {
2310 struct atmel_private *priv = netdev_priv(dev);
2311 unsigned long flags;
2312
2313 /* Note : you may have realised that, as this is a SET operation,
2314 * this is privileged and therefore a normal user can't
2315 * perform scanning.
2316 * This is not an error, while the device perform scanning,
2317 * traffic doesn't flow, so it's a perfect DoS...
2318 * Jean II */
2319
2320 if (priv->station_state == STATION_STATE_DOWN)
2321 return -EAGAIN;
2322
2323 /* Timeout old surveys. */
2324 if (time_after(jiffies, priv->last_survey + 20 * HZ))
2325 priv->site_survey_state = SITE_SURVEY_IDLE;
2326 priv->last_survey = jiffies;
2327
2328 /* Initiate a scan command */
2329 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2330 return -EBUSY;
2331
2332 del_timer_sync(&priv->management_timer);
2333 spin_lock_irqsave(&priv->irqlock, flags);
2334
2335 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2336 priv->fast_scan = 0;
2337 atmel_scan(priv, 0);
2338 spin_unlock_irqrestore(&priv->irqlock, flags);
2339
2340 return 0;
2341 }
2342
2343 static int atmel_get_scan(struct net_device *dev,
2344 struct iw_request_info *info,
2345 struct iw_point *dwrq,
2346 char *extra)
2347 {
2348 struct atmel_private *priv = netdev_priv(dev);
2349 int i;
2350 char *current_ev = extra;
2351 struct iw_event iwe;
2352
2353 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2354 return -EAGAIN;
2355
2356 for (i = 0; i < priv->BSS_list_entries; i++) {
2357 iwe.cmd = SIOCGIWAP;
2358 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2359 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
2360 current_ev = iwe_stream_add_event(info, current_ev,
2361 extra + IW_SCAN_MAX_DATA,
2362 &iwe, IW_EV_ADDR_LEN);
2363
2364 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2365 if (iwe.u.data.length > 32)
2366 iwe.u.data.length = 32;
2367 iwe.cmd = SIOCGIWESSID;
2368 iwe.u.data.flags = 1;
2369 current_ev = iwe_stream_add_point(info, current_ev,
2370 extra + IW_SCAN_MAX_DATA,
2371 &iwe, priv->BSSinfo[i].SSID);
2372
2373 iwe.cmd = SIOCGIWMODE;
2374 iwe.u.mode = priv->BSSinfo[i].BSStype;
2375 current_ev = iwe_stream_add_event(info, current_ev,
2376 extra + IW_SCAN_MAX_DATA,
2377 &iwe, IW_EV_UINT_LEN);
2378
2379 iwe.cmd = SIOCGIWFREQ;
2380 iwe.u.freq.m = priv->BSSinfo[i].channel;
2381 iwe.u.freq.e = 0;
2382 current_ev = iwe_stream_add_event(info, current_ev,
2383 extra + IW_SCAN_MAX_DATA,
2384 &iwe, IW_EV_FREQ_LEN);
2385
2386 /* Add quality statistics */
2387 iwe.cmd = IWEVQUAL;
2388 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2389 iwe.u.qual.qual = iwe.u.qual.level;
2390 /* iwe.u.qual.noise = SOMETHING */
2391 current_ev = iwe_stream_add_event(info, current_ev,
2392 extra + IW_SCAN_MAX_DATA,
2393 &iwe, IW_EV_QUAL_LEN);
2394
2395
2396 iwe.cmd = SIOCGIWENCODE;
2397 if (priv->BSSinfo[i].UsingWEP)
2398 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2399 else
2400 iwe.u.data.flags = IW_ENCODE_DISABLED;
2401 iwe.u.data.length = 0;
2402 current_ev = iwe_stream_add_point(info, current_ev,
2403 extra + IW_SCAN_MAX_DATA,
2404 &iwe, NULL);
2405 }
2406
2407 /* Length of data */
2408 dwrq->length = (current_ev - extra);
2409 dwrq->flags = 0;
2410
2411 return 0;
2412 }
2413
2414 static int atmel_get_range(struct net_device *dev,
2415 struct iw_request_info *info,
2416 struct iw_point *dwrq,
2417 char *extra)
2418 {
2419 struct atmel_private *priv = netdev_priv(dev);
2420 struct iw_range *range = (struct iw_range *) extra;
2421 int k, i, j;
2422
2423 dwrq->length = sizeof(struct iw_range);
2424 memset(range, 0, sizeof(struct iw_range));
2425 range->min_nwid = 0x0000;
2426 range->max_nwid = 0x0000;
2427 range->num_channels = 0;
2428 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
2429 if (priv->reg_domain == channel_table[j].reg_domain) {
2430 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2431 break;
2432 }
2433 if (range->num_channels != 0) {
2434 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
2435 range->freq[k].i = i; /* List index */
2436
2437 /* Values in MHz -> * 10^5 * 10 */
2438 range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2439 100000);
2440 range->freq[k++].e = 1;
2441 }
2442 range->num_frequency = k;
2443 }
2444
2445 range->max_qual.qual = 100;
2446 range->max_qual.level = 100;
2447 range->max_qual.noise = 0;
2448 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2449
2450 range->avg_qual.qual = 50;
2451 range->avg_qual.level = 50;
2452 range->avg_qual.noise = 0;
2453 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2454
2455 range->sensitivity = 0;
2456
2457 range->bitrate[0] = 1000000;
2458 range->bitrate[1] = 2000000;
2459 range->bitrate[2] = 5500000;
2460 range->bitrate[3] = 11000000;
2461 range->num_bitrates = 4;
2462
2463 range->min_rts = 0;
2464 range->max_rts = 2347;
2465 range->min_frag = 256;
2466 range->max_frag = 2346;
2467
2468 range->encoding_size[0] = 5;
2469 range->encoding_size[1] = 13;
2470 range->num_encoding_sizes = 2;
2471 range->max_encoding_tokens = 4;
2472
2473 range->pmp_flags = IW_POWER_ON;
2474 range->pmt_flags = IW_POWER_ON;
2475 range->pm_capa = 0;
2476
2477 range->we_version_source = WIRELESS_EXT;
2478 range->we_version_compiled = WIRELESS_EXT;
2479 range->retry_capa = IW_RETRY_LIMIT ;
2480 range->retry_flags = IW_RETRY_LIMIT;
2481 range->r_time_flags = 0;
2482 range->min_retry = 1;
2483 range->max_retry = 65535;
2484
2485 return 0;
2486 }
2487
2488 static int atmel_set_wap(struct net_device *dev,
2489 struct iw_request_info *info,
2490 struct sockaddr *awrq,
2491 char *extra)
2492 {
2493 struct atmel_private *priv = netdev_priv(dev);
2494 int i;
2495 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2496 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2497 unsigned long flags;
2498
2499 if (awrq->sa_family != ARPHRD_ETHER)
2500 return -EINVAL;
2501
2502 if (!memcmp(any, awrq->sa_data, 6) ||
2503 !memcmp(off, awrq->sa_data, 6)) {
2504 del_timer_sync(&priv->management_timer);
2505 spin_lock_irqsave(&priv->irqlock, flags);
2506 atmel_scan(priv, 1);
2507 spin_unlock_irqrestore(&priv->irqlock, flags);
2508 return 0;
2509 }
2510
2511 for (i = 0; i < priv->BSS_list_entries; i++) {
2512 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2513 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2514 return -EINVAL;
2515 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2516 return -EINVAL;
2517 } else {
2518 del_timer_sync(&priv->management_timer);
2519 spin_lock_irqsave(&priv->irqlock, flags);
2520 atmel_join_bss(priv, i);
2521 spin_unlock_irqrestore(&priv->irqlock, flags);
2522 return 0;
2523 }
2524 }
2525 }
2526
2527 return -EINVAL;
2528 }
2529
2530 static int atmel_config_commit(struct net_device *dev,
2531 struct iw_request_info *info, /* NULL */
2532 void *zwrq, /* NULL */
2533 char *extra) /* NULL */
2534 {
2535 return atmel_open(dev);
2536 }
2537
2538 static const iw_handler atmel_handler[] =
2539 {
2540 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
2541 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
2542 (iw_handler) NULL, /* SIOCSIWNWID */
2543 (iw_handler) NULL, /* SIOCGIWNWID */
2544 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2545 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2546 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2547 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
2548 (iw_handler) NULL, /* SIOCSIWSENS */
2549 (iw_handler) NULL, /* SIOCGIWSENS */
2550 (iw_handler) NULL, /* SIOCSIWRANGE */
2551 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2552 (iw_handler) NULL, /* SIOCSIWPRIV */
2553 (iw_handler) NULL, /* SIOCGIWPRIV */
2554 (iw_handler) NULL, /* SIOCSIWSTATS */
2555 (iw_handler) NULL, /* SIOCGIWSTATS */
2556 (iw_handler) NULL, /* SIOCSIWSPY */
2557 (iw_handler) NULL, /* SIOCGIWSPY */
2558 (iw_handler) NULL, /* -- hole -- */
2559 (iw_handler) NULL, /* -- hole -- */
2560 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2561 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2562 (iw_handler) NULL, /* -- hole -- */
2563 (iw_handler) NULL, /* SIOCGIWAPLIST */
2564 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2565 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2566 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2567 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
2568 (iw_handler) NULL, /* SIOCSIWNICKN */
2569 (iw_handler) NULL, /* SIOCGIWNICKN */
2570 (iw_handler) NULL, /* -- hole -- */
2571 (iw_handler) NULL, /* -- hole -- */
2572 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2573 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2574 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2575 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2576 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2577 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
2578 (iw_handler) NULL, /* SIOCSIWTXPOW */
2579 (iw_handler) NULL, /* SIOCGIWTXPOW */
2580 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2581 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2582 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2583 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2584 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2585 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
2586 (iw_handler) NULL, /* -- hole -- */
2587 (iw_handler) NULL, /* -- hole -- */
2588 (iw_handler) NULL, /* SIOCSIWGENIE */
2589 (iw_handler) NULL, /* SIOCGIWGENIE */
2590 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2591 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2592 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2593 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2594 (iw_handler) NULL, /* SIOCSIWPMKSA */
2595 };
2596
2597 static const iw_handler atmel_private_handler[] =
2598 {
2599 NULL, /* SIOCIWFIRSTPRIV */
2600 };
2601
2602 typedef struct atmel_priv_ioctl {
2603 char id[32];
2604 unsigned char __user *data;
2605 unsigned short len;
2606 } atmel_priv_ioctl;
2607
2608 #define ATMELFWL SIOCIWFIRSTPRIV
2609 #define ATMELIDIFC ATMELFWL + 1
2610 #define ATMELRD ATMELFWL + 2
2611 #define ATMELMAGIC 0x51807
2612 #define REGDOMAINSZ 20
2613
2614 static const struct iw_priv_args atmel_private_args[] = {
2615 {
2616 .cmd = ATMELFWL,
2617 .set_args = IW_PRIV_TYPE_BYTE
2618 | IW_PRIV_SIZE_FIXED
2619 | sizeof (atmel_priv_ioctl),
2620 .get_args = IW_PRIV_TYPE_NONE,
2621 .name = "atmelfwl"
2622 }, {
2623 .cmd = ATMELIDIFC,
2624 .set_args = IW_PRIV_TYPE_NONE,
2625 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2626 .name = "atmelidifc"
2627 }, {
2628 .cmd = ATMELRD,
2629 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2630 .get_args = IW_PRIV_TYPE_NONE,
2631 .name = "regdomain"
2632 },
2633 };
2634
2635 static const struct iw_handler_def atmel_handler_def = {
2636 .num_standard = ARRAY_SIZE(atmel_handler),
2637 .num_private = ARRAY_SIZE(atmel_private_handler),
2638 .num_private_args = ARRAY_SIZE(atmel_private_args),
2639 .standard = (iw_handler *) atmel_handler,
2640 .private = (iw_handler *) atmel_private_handler,
2641 .private_args = (struct iw_priv_args *) atmel_private_args,
2642 .get_wireless_stats = atmel_get_wireless_stats
2643 };
2644
2645 static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2646 {
2647 int i, rc = 0;
2648 struct atmel_private *priv = netdev_priv(dev);
2649 atmel_priv_ioctl com;
2650 struct iwreq *wrq = (struct iwreq *) rq;
2651 unsigned char *new_firmware;
2652 char domain[REGDOMAINSZ + 1];
2653
2654 switch (cmd) {
2655 case ATMELIDIFC:
2656 wrq->u.param.value = ATMELMAGIC;
2657 break;
2658
2659 case ATMELFWL:
2660 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2661 rc = -EFAULT;
2662 break;
2663 }
2664
2665 if (!capable(CAP_NET_ADMIN)) {
2666 rc = -EPERM;
2667 break;
2668 }
2669
2670 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2671 rc = -ENOMEM;
2672 break;
2673 }
2674
2675 if (copy_from_user(new_firmware, com.data, com.len)) {
2676 kfree(new_firmware);
2677 rc = -EFAULT;
2678 break;
2679 }
2680
2681 kfree(priv->firmware);
2682
2683 priv->firmware = new_firmware;
2684 priv->firmware_length = com.len;
2685 strncpy(priv->firmware_id, com.id, 31);
2686 priv->firmware_id[31] = '\0';
2687 break;
2688
2689 case ATMELRD:
2690 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2691 rc = -EFAULT;
2692 break;
2693 }
2694
2695 if (!capable(CAP_NET_ADMIN)) {
2696 rc = -EPERM;
2697 break;
2698 }
2699
2700 domain[REGDOMAINSZ] = 0;
2701 rc = -EINVAL;
2702 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
2703 /* strcasecmp doesn't exist in the library */
2704 char *a = channel_table[i].name;
2705 char *b = domain;
2706 while (*a) {
2707 char c1 = *a++;
2708 char c2 = *b++;
2709 if (tolower(c1) != tolower(c2))
2710 break;
2711 }
2712 if (!*a && !*b) {
2713 priv->config_reg_domain = channel_table[i].reg_domain;
2714 rc = 0;
2715 }
2716 }
2717
2718 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2719 rc = atmel_open(dev);
2720 break;
2721
2722 default:
2723 rc = -EOPNOTSUPP;
2724 }
2725
2726 return rc;
2727 }
2728
2729 struct auth_body {
2730 __le16 alg;
2731 __le16 trans_seq;
2732 __le16 status;
2733 u8 el_id;
2734 u8 chall_text_len;
2735 u8 chall_text[253];
2736 };
2737
2738 static void atmel_enter_state(struct atmel_private *priv, int new_state)
2739 {
2740 int old_state = priv->station_state;
2741
2742 if (new_state == old_state)
2743 return;
2744
2745 priv->station_state = new_state;
2746
2747 if (new_state == STATION_STATE_READY) {
2748 netif_start_queue(priv->dev);
2749 netif_carrier_on(priv->dev);
2750 }
2751
2752 if (old_state == STATION_STATE_READY) {
2753 netif_carrier_off(priv->dev);
2754 if (netif_running(priv->dev))
2755 netif_stop_queue(priv->dev);
2756 priv->last_beacon_timestamp = 0;
2757 }
2758 }
2759
2760 static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2761 {
2762 struct {
2763 u8 BSSID[6];
2764 u8 SSID[MAX_SSID_LENGTH];
2765 u8 scan_type;
2766 u8 channel;
2767 __le16 BSS_type;
2768 __le16 min_channel_time;
2769 __le16 max_channel_time;
2770 u8 options;
2771 u8 SSID_size;
2772 } cmd;
2773
2774 memset(cmd.BSSID, 0xff, 6);
2775
2776 if (priv->fast_scan) {
2777 cmd.SSID_size = priv->SSID_size;
2778 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2779 cmd.min_channel_time = cpu_to_le16(10);
2780 cmd.max_channel_time = cpu_to_le16(50);
2781 } else {
2782 priv->BSS_list_entries = 0;
2783 cmd.SSID_size = 0;
2784 cmd.min_channel_time = cpu_to_le16(10);
2785 cmd.max_channel_time = cpu_to_le16(120);
2786 }
2787
2788 cmd.options = 0;
2789
2790 if (!specific_ssid)
2791 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
2792
2793 cmd.channel = (priv->channel & 0x7f);
2794 cmd.scan_type = SCAN_TYPE_ACTIVE;
2795 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
2796 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
2797
2798 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2799
2800 /* This must come after all hardware access to avoid being messed up
2801 by stuff happening in interrupt context after we leave STATE_DOWN */
2802 atmel_enter_state(priv, STATION_STATE_SCANNING);
2803 }
2804
2805 static void join(struct atmel_private *priv, int type)
2806 {
2807 struct {
2808 u8 BSSID[6];
2809 u8 SSID[MAX_SSID_LENGTH];
2810 u8 BSS_type; /* this is a short in a scan command - weird */
2811 u8 channel;
2812 __le16 timeout;
2813 u8 SSID_size;
2814 u8 reserved;
2815 } cmd;
2816
2817 cmd.SSID_size = priv->SSID_size;
2818 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2819 memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2820 cmd.channel = (priv->channel & 0x7f);
2821 cmd.BSS_type = type;
2822 cmd.timeout = cpu_to_le16(2000);
2823
2824 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
2825 }
2826
2827 static void start(struct atmel_private *priv, int type)
2828 {
2829 struct {
2830 u8 BSSID[6];
2831 u8 SSID[MAX_SSID_LENGTH];
2832 u8 BSS_type;
2833 u8 channel;
2834 u8 SSID_size;
2835 u8 reserved[3];
2836 } cmd;
2837
2838 cmd.SSID_size = priv->SSID_size;
2839 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2840 memcpy(cmd.BSSID, priv->BSSID, 6);
2841 cmd.BSS_type = type;
2842 cmd.channel = (priv->channel & 0x7f);
2843
2844 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
2845 }
2846
2847 static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2848 u8 channel)
2849 {
2850 int rejoin = 0;
2851 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
2852 SHORT_PREAMBLE : LONG_PREAMBLE;
2853
2854 if (priv->preamble != new) {
2855 priv->preamble = new;
2856 rejoin = 1;
2857 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2858 }
2859
2860 if (priv->channel != channel) {
2861 priv->channel = channel;
2862 rejoin = 1;
2863 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2864 }
2865
2866 if (rejoin) {
2867 priv->station_is_associated = 0;
2868 atmel_enter_state(priv, STATION_STATE_JOINNING);
2869
2870 if (priv->operating_mode == IW_MODE_INFRA)
2871 join(priv, BSS_TYPE_INFRASTRUCTURE);
2872 else
2873 join(priv, BSS_TYPE_AD_HOC);
2874 }
2875 }
2876
2877 static void send_authentication_request(struct atmel_private *priv, u16 system,
2878 u8 *challenge, int challenge_len)
2879 {
2880 struct ieee80211_hdr header;
2881 struct auth_body auth;
2882
2883 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
2884 header.duration_id = cpu_to_le16(0x8000);
2885 header.seq_ctrl = 0;
2886 memcpy(header.addr1, priv->CurrentBSSID, 6);
2887 memcpy(header.addr2, priv->dev->dev_addr, 6);
2888 memcpy(header.addr3, priv->CurrentBSSID, 6);
2889
2890 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
2891 /* no WEP for authentication frames with TrSeqNo 1 */
2892 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2893
2894 auth.alg = cpu_to_le16(system);
2895
2896 auth.status = 0;
2897 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
2898 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
2899 priv->CurrentAuthentTransactionSeqNum += 2;
2900
2901 if (challenge_len != 0) {
2902 auth.el_id = 16; /* challenge_text */
2903 auth.chall_text_len = challenge_len;
2904 memcpy(auth.chall_text, challenge, challenge_len);
2905 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2906 } else {
2907 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2908 }
2909 }
2910
2911 static void send_association_request(struct atmel_private *priv, int is_reassoc)
2912 {
2913 u8 *ssid_el_p;
2914 int bodysize;
2915 struct ieee80211_hdr header;
2916 struct ass_req_format {
2917 __le16 capability;
2918 __le16 listen_interval;
2919 u8 ap[6]; /* nothing after here directly accessible */
2920 u8 ssid_el_id;
2921 u8 ssid_len;
2922 u8 ssid[MAX_SSID_LENGTH];
2923 u8 sup_rates_el_id;
2924 u8 sup_rates_len;
2925 u8 rates[4];
2926 } body;
2927
2928 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2929 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
2930 header.duration_id = cpu_to_le16(0x8000);
2931 header.seq_ctrl = 0;
2932
2933 memcpy(header.addr1, priv->CurrentBSSID, 6);
2934 memcpy(header.addr2, priv->dev->dev_addr, 6);
2935 memcpy(header.addr3, priv->CurrentBSSID, 6);
2936
2937 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
2938 if (priv->wep_is_on)
2939 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
2940 if (priv->preamble == SHORT_PREAMBLE)
2941 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
2942
2943 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
2944
2945 /* current AP address - only in reassoc frame */
2946 if (is_reassoc) {
2947 memcpy(body.ap, priv->CurrentBSSID, 6);
2948 ssid_el_p = &body.ssid_el_id;
2949 bodysize = 18 + priv->SSID_size;
2950 } else {
2951 ssid_el_p = &body.ap[0];
2952 bodysize = 12 + priv->SSID_size;
2953 }
2954
2955 ssid_el_p[0] = WLAN_EID_SSID;
2956 ssid_el_p[1] = priv->SSID_size;
2957 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
2958 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
2959 ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
2960 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2961
2962 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2963 }
2964
2965 static int is_frame_from_current_bss(struct atmel_private *priv,
2966 struct ieee80211_hdr *header)
2967 {
2968 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
2969 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2970 else
2971 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2972 }
2973
2974 static int retrieve_bss(struct atmel_private *priv)
2975 {
2976 int i;
2977 int max_rssi = -128;
2978 int max_index = -1;
2979
2980 if (priv->BSS_list_entries == 0)
2981 return -1;
2982
2983 if (priv->connect_to_any_BSS) {
2984 /* Select a BSS with the max-RSSI but of the same type and of
2985 the same WEP mode and that it is not marked as 'bad' (i.e.
2986 we had previously failed to connect to this BSS with the
2987 settings that we currently use) */
2988 priv->current_BSS = 0;
2989 for (i = 0; i < priv->BSS_list_entries; i++) {
2990 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
2991 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
2992 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
2993 !(priv->BSSinfo[i].channel & 0x80)) {
2994 max_rssi = priv->BSSinfo[i].RSSI;
2995 priv->current_BSS = max_index = i;
2996 }
2997 }
2998 return max_index;
2999 }
3000
3001 for (i = 0; i < priv->BSS_list_entries; i++) {
3002 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3003 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3004 priv->operating_mode == priv->BSSinfo[i].BSStype &&
3005 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3006 if (priv->BSSinfo[i].RSSI >= max_rssi) {
3007 max_rssi = priv->BSSinfo[i].RSSI;
3008 max_index = i;
3009 }
3010 }
3011 }
3012 return max_index;
3013 }
3014
3015 static void store_bss_info(struct atmel_private *priv,
3016 struct ieee80211_hdr *header, u16 capability,
3017 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3018 u8 *ssid, int is_beacon)
3019 {
3020 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
3021 int i, index;
3022
3023 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3024 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
3025 index = i;
3026
3027 /* If we process a probe and an entry from this BSS exists
3028 we will update the BSS entry with the info from this BSS.
3029 If we process a beacon we will only update RSSI */
3030
3031 if (index == -1) {
3032 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3033 return;
3034 index = priv->BSS_list_entries++;
3035 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3036 priv->BSSinfo[index].RSSI = rssi;
3037 } else {
3038 if (rssi > priv->BSSinfo[index].RSSI)
3039 priv->BSSinfo[index].RSSI = rssi;
3040 if (is_beacon)
3041 return;
3042 }
3043
3044 priv->BSSinfo[index].channel = channel;
3045 priv->BSSinfo[index].beacon_period = beacon_period;
3046 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
3047 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3048 priv->BSSinfo[index].SSIDsize = ssid_len;
3049
3050 if (capability & WLAN_CAPABILITY_IBSS)
3051 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
3052 else if (capability & WLAN_CAPABILITY_ESS)
3053 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
3054
3055 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
3056 SHORT_PREAMBLE : LONG_PREAMBLE;
3057 }
3058
3059 static void authenticate(struct atmel_private *priv, u16 frame_len)
3060 {
3061 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3062 u16 status = le16_to_cpu(auth->status);
3063 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
3064 u16 system = le16_to_cpu(auth->alg);
3065
3066 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
3067 /* no WEP */
3068 if (priv->station_was_associated) {
3069 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3070 send_association_request(priv, 1);
3071 return;
3072 } else {
3073 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3074 send_association_request(priv, 0);
3075 return;
3076 }
3077 }
3078
3079 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
3080 int should_associate = 0;
3081 /* WEP */
3082 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3083 return;
3084
3085 if (system == WLAN_AUTH_OPEN) {
3086 if (trans_seq_no == 0x0002) {
3087 should_associate = 1;
3088 }
3089 } else if (system == WLAN_AUTH_SHARED_KEY) {
3090 if (trans_seq_no == 0x0002 &&
3091 auth->el_id == WLAN_EID_CHALLENGE) {
3092 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3093 return;
3094 } else if (trans_seq_no == 0x0004) {
3095 should_associate = 1;
3096 }
3097 }
3098
3099 if (should_associate) {
3100 if (priv->station_was_associated) {
3101 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3102 send_association_request(priv, 1);
3103 return;
3104 } else {
3105 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3106 send_association_request(priv, 0);
3107 return;
3108 }
3109 }
3110 }
3111
3112 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
3113 /* Flip back and forth between WEP auth modes until the max
3114 * authentication tries has been exceeded.
3115 */
3116 if (system == WLAN_AUTH_OPEN) {
3117 priv->CurrentAuthentTransactionSeqNum = 0x001;
3118 priv->exclude_unencrypted = 1;
3119 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3120 return;
3121 } else if (system == WLAN_AUTH_SHARED_KEY
3122 && priv->wep_is_on) {
3123 priv->CurrentAuthentTransactionSeqNum = 0x001;
3124 priv->exclude_unencrypted = 0;
3125 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3126 return;
3127 } else if (priv->connect_to_any_BSS) {
3128 int bss_index;
3129
3130 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3131
3132 if ((bss_index = retrieve_bss(priv)) != -1) {
3133 atmel_join_bss(priv, bss_index);
3134 return;
3135 }
3136 }
3137 }
3138
3139 priv->AuthenticationRequestRetryCnt = 0;
3140 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3141 priv->station_is_associated = 0;
3142 }
3143
3144 static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3145 {
3146 struct ass_resp_format {
3147 __le16 capability;
3148 __le16 status;
3149 __le16 ass_id;
3150 u8 el_id;
3151 u8 length;
3152 u8 rates[4];
3153 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
3154
3155 u16 status = le16_to_cpu(ass_resp->status);
3156 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
3157 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3158
3159 union iwreq_data wrqu;
3160
3161 if (frame_len < 8 + rates_len)
3162 return;
3163
3164 if (status == WLAN_STATUS_SUCCESS) {
3165 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
3166 priv->AssociationRequestRetryCnt = 0;
3167 else
3168 priv->ReAssociationRequestRetryCnt = 0;
3169
3170 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3171 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3172 atmel_set_mib(priv, Phy_Mib_Type,
3173 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
3174 if (priv->power_mode == 0) {
3175 priv->listen_interval = 1;
3176 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3177 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3178 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3179 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3180 } else {
3181 priv->listen_interval = 2;
3182 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3183 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3184 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3185 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
3186 }
3187
3188 priv->station_is_associated = 1;
3189 priv->station_was_associated = 1;
3190 atmel_enter_state(priv, STATION_STATE_READY);
3191
3192 /* Send association event to userspace */
3193 wrqu.data.length = 0;
3194 wrqu.data.flags = 0;
3195 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3196 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3197 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3198
3199 return;
3200 }
3201
3202 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3203 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3204 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3205 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3206 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3207 priv->AssociationRequestRetryCnt++;
3208 send_association_request(priv, 0);
3209 return;
3210 }
3211
3212 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3213 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3214 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
3215 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3216 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3217 priv->ReAssociationRequestRetryCnt++;
3218 send_association_request(priv, 1);
3219 return;
3220 }
3221
3222 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3223 priv->station_is_associated = 0;
3224
3225 if (priv->connect_to_any_BSS) {
3226 int bss_index;
3227 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3228
3229 if ((bss_index = retrieve_bss(priv)) != -1)
3230 atmel_join_bss(priv, bss_index);
3231 }
3232 }
3233
3234 static void atmel_join_bss(struct atmel_private *priv, int bss_index)
3235 {
3236 struct bss_info *bss = &priv->BSSinfo[bss_index];
3237
3238 memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3239 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3240
3241 /* The WPA stuff cares about the current AP address */
3242 if (priv->use_wpa)
3243 build_wpa_mib(priv);
3244
3245 /* When switching to AdHoc turn OFF Power Save if needed */
3246
3247 if (bss->BSStype == IW_MODE_ADHOC &&
3248 priv->operating_mode != IW_MODE_ADHOC &&
3249 priv->power_mode) {
3250 priv->power_mode = 0;
3251 priv->listen_interval = 1;
3252 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3253 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3254 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3255 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
3256 }
3257
3258 priv->operating_mode = bss->BSStype;
3259 priv->channel = bss->channel & 0x7f;
3260 priv->beacon_period = bss->beacon_period;
3261
3262 if (priv->preamble != bss->preamble) {
3263 priv->preamble = bss->preamble;
3264 atmel_set_mib8(priv, Local_Mib_Type,
3265 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
3266 }
3267
3268 if (!priv->wep_is_on && bss->UsingWEP) {
3269 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3270 priv->station_is_associated = 0;
3271 return;
3272 }
3273
3274 if (priv->wep_is_on && !bss->UsingWEP) {
3275 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3276 priv->station_is_associated = 0;
3277 return;
3278 }
3279
3280 atmel_enter_state(priv, STATION_STATE_JOINNING);
3281
3282 if (priv->operating_mode == IW_MODE_INFRA)
3283 join(priv, BSS_TYPE_INFRASTRUCTURE);
3284 else
3285 join(priv, BSS_TYPE_AD_HOC);
3286 }
3287
3288 static void restart_search(struct atmel_private *priv)
3289 {
3290 int bss_index;
3291
3292 if (!priv->connect_to_any_BSS) {
3293 atmel_scan(priv, 1);
3294 } else {
3295 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
3296
3297 if ((bss_index = retrieve_bss(priv)) != -1)
3298 atmel_join_bss(priv, bss_index);
3299 else
3300 atmel_scan(priv, 0);
3301 }
3302 }
3303
3304 static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3305 {
3306 u8 old = priv->wstats.qual.level;
3307 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3308
3309 switch (priv->firmware_type) {
3310 case ATMEL_FW_TYPE_502E:
3311 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3312 break;
3313 default:
3314 break;
3315 }
3316
3317 rssi = rssi * 100 / max_rssi;
3318 if ((rssi + old) % 2)
3319 priv->wstats.qual.level = (rssi + old) / 2 + 1;
3320 else
3321 priv->wstats.qual.level = (rssi + old) / 2;
3322 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3323 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3324 }
3325
3326 static void atmel_smooth_qual(struct atmel_private *priv)
3327 {
3328 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
3329 while (time_diff--) {
3330 priv->last_qual += HZ;
3331 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3332 priv->wstats.qual.qual +=
3333 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3334 priv->beacons_this_sec = 0;
3335 }
3336 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3337 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3338 }
3339
3340 /* deals with incoming management frames. */
3341 static void atmel_management_frame(struct atmel_private *priv,
3342 struct ieee80211_hdr *header,
3343 u16 frame_len, u8 rssi)
3344 {
3345 u16 subtype;
3346
3347 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
3348 switch (subtype) {
3349 case IEEE80211_STYPE_BEACON:
3350 case IEEE80211_STYPE_PROBE_RESP:
3351
3352 /* beacon frame has multiple variable-length fields -
3353 never let an engineer loose with a data structure design. */
3354 {
3355 struct beacon_format {
3356 __le64 timestamp;
3357 __le16 interval;
3358 __le16 capability;
3359 u8 ssid_el_id;
3360 u8 ssid_length;
3361 /* ssid here */
3362 u8 rates_el_id;
3363 u8 rates_length;
3364 /* rates here */
3365 u8 ds_el_id;
3366 u8 ds_length;
3367 /* ds here */
3368 } *beacon = (struct beacon_format *)priv->rx_buf;
3369
3370 u8 channel, rates_length, ssid_length;
3371 u64 timestamp = le64_to_cpu(beacon->timestamp);
3372 u16 beacon_interval = le16_to_cpu(beacon->interval);
3373 u16 capability = le16_to_cpu(beacon->capability);
3374 u8 *beaconp = priv->rx_buf;
3375 ssid_length = beacon->ssid_length;
3376 /* this blows chunks. */
3377 if (frame_len < 14 || frame_len < ssid_length + 15)
3378 return;
3379 rates_length = beaconp[beacon->ssid_length + 15];
3380 if (frame_len < ssid_length + rates_length + 18)
3381 return;
3382 if (ssid_length > MAX_SSID_LENGTH)
3383 return;
3384 channel = beaconp[ssid_length + rates_length + 18];
3385
3386 if (priv->station_state == STATION_STATE_READY) {
3387 smooth_rssi(priv, rssi);
3388 if (is_frame_from_current_bss(priv, header)) {
3389 priv->beacons_this_sec++;
3390 atmel_smooth_qual(priv);
3391 if (priv->last_beacon_timestamp) {
3392 /* Note truncate this to 32 bits - kernel can't divide a long long */
3393 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3394 int beacons = beacon_delay / (beacon_interval * 1000);
3395 if (beacons > 1)
3396 priv->wstats.miss.beacon += beacons - 1;
3397 }
3398 priv->last_beacon_timestamp = timestamp;
3399 handle_beacon_probe(priv, capability, channel);
3400 }
3401 }
3402
3403 if (priv->station_state == STATION_STATE_SCANNING)
3404 store_bss_info(priv, header, capability,
3405 beacon_interval, channel, rssi,
3406 ssid_length,
3407 &beacon->rates_el_id,
3408 subtype == IEEE80211_STYPE_BEACON);
3409 }
3410 break;
3411
3412 case IEEE80211_STYPE_AUTH:
3413
3414 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3415 authenticate(priv, frame_len);
3416
3417 break;
3418
3419 case IEEE80211_STYPE_ASSOC_RESP:
3420 case IEEE80211_STYPE_REASSOC_RESP:
3421
3422 if (priv->station_state == STATION_STATE_ASSOCIATING ||
3423 priv->station_state == STATION_STATE_REASSOCIATING)
3424 associate(priv, frame_len, subtype);
3425
3426 break;
3427
3428 case IEEE80211_STYPE_DISASSOC:
3429 if (priv->station_is_associated &&
3430 priv->operating_mode == IW_MODE_INFRA &&
3431 is_frame_from_current_bss(priv, header)) {
3432 priv->station_was_associated = 0;
3433 priv->station_is_associated = 0;
3434
3435 atmel_enter_state(priv, STATION_STATE_JOINNING);
3436 join(priv, BSS_TYPE_INFRASTRUCTURE);
3437 }
3438
3439 break;
3440
3441 case IEEE80211_STYPE_DEAUTH:
3442 if (priv->operating_mode == IW_MODE_INFRA &&
3443 is_frame_from_current_bss(priv, header)) {
3444 priv->station_was_associated = 0;
3445
3446 atmel_enter_state(priv, STATION_STATE_JOINNING);
3447 join(priv, BSS_TYPE_INFRASTRUCTURE);
3448 }
3449
3450 break;
3451 }
3452 }
3453
3454 /* run when timer expires */
3455 static void atmel_management_timer(u_long a)
3456 {
3457 struct net_device *dev = (struct net_device *) a;
3458 struct atmel_private *priv = netdev_priv(dev);
3459 unsigned long flags;
3460
3461 /* Check if the card has been yanked. */
3462 if (priv->card && priv->present_callback &&
3463 !(*priv->present_callback)(priv->card))
3464 return;
3465
3466 spin_lock_irqsave(&priv->irqlock, flags);
3467
3468 switch (priv->station_state) {
3469
3470 case STATION_STATE_AUTHENTICATING:
3471 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3472 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3473 priv->station_is_associated = 0;
3474 priv->AuthenticationRequestRetryCnt = 0;
3475 restart_search(priv);
3476 } else {
3477 int auth = WLAN_AUTH_OPEN;
3478 priv->AuthenticationRequestRetryCnt++;
3479 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3480 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3481 if (priv->wep_is_on && priv->exclude_unencrypted)
3482 auth = WLAN_AUTH_SHARED_KEY;
3483 send_authentication_request(priv, auth, NULL, 0);
3484 }
3485 break;
3486
3487 case STATION_STATE_ASSOCIATING:
3488 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3489 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3490 priv->station_is_associated = 0;
3491 priv->AssociationRequestRetryCnt = 0;
3492 restart_search(priv);
3493 } else {
3494 priv->AssociationRequestRetryCnt++;
3495 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3496 send_association_request(priv, 0);
3497 }
3498 break;
3499
3500 case STATION_STATE_REASSOCIATING:
3501 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3502 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3503 priv->station_is_associated = 0;
3504 priv->ReAssociationRequestRetryCnt = 0;
3505 restart_search(priv);
3506 } else {
3507 priv->ReAssociationRequestRetryCnt++;
3508 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3509 send_association_request(priv, 1);
3510 }
3511 break;
3512
3513 default:
3514 break;
3515 }
3516
3517 spin_unlock_irqrestore(&priv->irqlock, flags);
3518 }
3519
3520 static void atmel_command_irq(struct atmel_private *priv)
3521 {
3522 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3523 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3524 int fast_scan;
3525 union iwreq_data wrqu;
3526
3527 if (status == CMD_STATUS_IDLE ||
3528 status == CMD_STATUS_IN_PROGRESS)
3529 return;
3530
3531 switch (command) {
3532 case CMD_Start:
3533 if (status == CMD_STATUS_COMPLETE) {
3534 priv->station_was_associated = priv->station_is_associated;
3535 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3536 (u8 *)priv->CurrentBSSID, 6);
3537 atmel_enter_state(priv, STATION_STATE_READY);
3538 }
3539 break;
3540
3541 case CMD_Scan:
3542 fast_scan = priv->fast_scan;
3543 priv->fast_scan = 0;
3544
3545 if (status != CMD_STATUS_COMPLETE) {
3546 atmel_scan(priv, 1);
3547 } else {
3548 int bss_index = retrieve_bss(priv);
3549 int notify_scan_complete = 1;
3550 if (bss_index != -1) {
3551 atmel_join_bss(priv, bss_index);
3552 } else if (priv->operating_mode == IW_MODE_ADHOC &&
3553 priv->SSID_size != 0) {
3554 start(priv, BSS_TYPE_AD_HOC);
3555 } else {
3556 priv->fast_scan = !fast_scan;
3557 atmel_scan(priv, 1);
3558 notify_scan_complete = 0;
3559 }
3560 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3561 if (notify_scan_complete) {
3562 wrqu.data.length = 0;
3563 wrqu.data.flags = 0;
3564 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3565 }
3566 }
3567 break;
3568
3569 case CMD_SiteSurvey:
3570 priv->fast_scan = 0;
3571
3572 if (status != CMD_STATUS_COMPLETE)
3573 return;
3574
3575 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3576 if (priv->station_is_associated) {
3577 atmel_enter_state(priv, STATION_STATE_READY);
3578 wrqu.data.length = 0;
3579 wrqu.data.flags = 0;
3580 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3581 } else {
3582 atmel_scan(priv, 1);
3583 }
3584 break;
3585
3586 case CMD_Join:
3587 if (status == CMD_STATUS_COMPLETE) {
3588 if (priv->operating_mode == IW_MODE_ADHOC) {
3589 priv->station_was_associated = priv->station_is_associated;
3590 atmel_enter_state(priv, STATION_STATE_READY);
3591 } else {
3592 int auth = WLAN_AUTH_OPEN;
3593 priv->AuthenticationRequestRetryCnt = 0;
3594 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
3595
3596 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3597 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3598 if (priv->wep_is_on && priv->exclude_unencrypted)
3599 auth = WLAN_AUTH_SHARED_KEY;
3600 send_authentication_request(priv, auth, NULL, 0);
3601 }
3602 return;
3603 }
3604
3605 atmel_scan(priv, 1);
3606 }
3607 }
3608
3609 static int atmel_wakeup_firmware(struct atmel_private *priv)
3610 {
3611 struct host_info_struct *iface = &priv->host_info;
3612 u16 mr1, mr3;
3613 int i;
3614
3615 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3616 atmel_set_gcr(priv->dev, GCR_REMAP);
3617
3618 /* wake up on-board processor */
3619 atmel_clear_gcr(priv->dev, 0x0040);
3620 atmel_write16(priv->dev, BSR, BSS_SRAM);
3621
3622 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3623 mdelay(100);
3624
3625 /* and wait for it */
3626 for (i = LOOP_RETRY_LIMIT; i; i--) {
3627 mr1 = atmel_read16(priv->dev, MR1);
3628 mr3 = atmel_read16(priv->dev, MR3);
3629
3630 if (mr3 & MAC_BOOT_COMPLETE)
3631 break;
3632 if (mr1 & MAC_BOOT_COMPLETE &&
3633 priv->bus_type == BUS_TYPE_PCCARD)
3634 break;
3635 }
3636
3637 if (i == 0) {
3638 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
3639 return -EIO;
3640 }
3641
3642 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3643 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
3644 return -ENODEV;
3645 }
3646
3647 /* now check for completion of MAC initialization through
3648 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3649 MAC initialization, check completion status, set interrupt mask,
3650 enables interrupts and calls Tx and Rx initialization functions */
3651
3652 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
3653
3654 for (i = LOOP_RETRY_LIMIT; i; i--) {
3655 mr1 = atmel_read16(priv->dev, MR1);
3656 mr3 = atmel_read16(priv->dev, MR3);
3657
3658 if (mr3 & MAC_INIT_COMPLETE)
3659 break;
3660 if (mr1 & MAC_INIT_COMPLETE &&
3661 priv->bus_type == BUS_TYPE_PCCARD)
3662 break;
3663 }
3664
3665 if (i == 0) {
3666 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3667 priv->dev->name);
3668 return -EIO;
3669 }
3670
3671 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3672 if ((mr3 & MAC_INIT_COMPLETE) &&
3673 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3674 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
3675 return -EIO;
3676 }
3677 if ((mr1 & MAC_INIT_COMPLETE) &&
3678 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3679 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
3680 return -EIO;
3681 }
3682
3683 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
3684 priv->host_info_base, sizeof(*iface));
3685
3686 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3687 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3688 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3689 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3690 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3691 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3692 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3693 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3694 iface->build_version = le16_to_cpu(iface->build_version);
3695 iface->command_pos = le16_to_cpu(iface->command_pos);
3696 iface->major_version = le16_to_cpu(iface->major_version);
3697 iface->minor_version = le16_to_cpu(iface->minor_version);
3698 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3699 iface->mac_status = le16_to_cpu(iface->mac_status);
3700
3701 return 0;
3702 }
3703
3704 /* determine type of memory and MAC address */
3705 static int probe_atmel_card(struct net_device *dev)
3706 {
3707 int rc = 0;
3708 struct atmel_private *priv = netdev_priv(dev);
3709
3710 /* reset pccard */
3711 if (priv->bus_type == BUS_TYPE_PCCARD)
3712 atmel_write16(dev, GCR, 0x0060);
3713
3714 atmel_write16(dev, GCR, 0x0040);
3715 mdelay(500);
3716
3717 if (atmel_read16(dev, MR2) == 0) {
3718 /* No stored firmware so load a small stub which just
3719 tells us the MAC address */
3720 int i;
3721 priv->card_type = CARD_TYPE_EEPROM;
3722 atmel_write16(dev, BSR, BSS_IRAM);
3723 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3724 atmel_set_gcr(dev, GCR_REMAP);
3725 atmel_clear_gcr(priv->dev, 0x0040);
3726 atmel_write16(dev, BSR, BSS_SRAM);
3727 for (i = LOOP_RETRY_LIMIT; i; i--)
3728 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3729 break;
3730 if (i == 0) {
3731 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3732 } else {
3733 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3734 /* got address, now squash it again until the network
3735 interface is opened */
3736 if (priv->bus_type == BUS_TYPE_PCCARD)
3737 atmel_write16(dev, GCR, 0x0060);
3738 atmel_write16(dev, GCR, 0x0040);
3739 rc = 1;
3740 }
3741 } else if (atmel_read16(dev, MR4) == 0) {
3742 /* Mac address easy in this case. */
3743 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
3744 atmel_write16(dev, BSR, 1);
3745 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3746 atmel_write16(dev, BSR, 0x200);
3747 rc = 1;
3748 } else {
3749 /* Standard firmware in flash, boot it up and ask
3750 for the Mac Address */
3751 priv->card_type = CARD_TYPE_SPI_FLASH;
3752 if (atmel_wakeup_firmware(priv) == 0) {
3753 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
3754
3755 /* got address, now squash it again until the network
3756 interface is opened */
3757 if (priv->bus_type == BUS_TYPE_PCCARD)
3758 atmel_write16(dev, GCR, 0x0060);
3759 atmel_write16(dev, GCR, 0x0040);
3760 rc = 1;
3761 }
3762 }
3763
3764 if (rc) {
3765 if (dev->dev_addr[0] == 0xFF) {
3766 static const u8 default_mac[] = {
3767 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3768 };
3769 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3770 memcpy(dev->dev_addr, default_mac, 6);
3771 }
3772 }
3773
3774 return rc;
3775 }
3776
3777 /* Move the encyption information on the MIB structure.
3778 This routine is for the pre-WPA firmware: later firmware has
3779 a different format MIB and a different routine. */
3780 static void build_wep_mib(struct atmel_private *priv)
3781 {
3782 struct { /* NB this is matched to the hardware, don't change. */
3783 u8 wep_is_on;
3784 u8 default_key; /* 0..3 */
3785 u8 reserved;
3786 u8 exclude_unencrypted;
3787
3788 u32 WEPICV_error_count;
3789 u32 WEP_excluded_count;
3790
3791 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
3792 u8 encryption_level; /* 0, 1, 2 */
3793 u8 reserved2[3];
3794 } mib;
3795 int i;
3796
3797 mib.wep_is_on = priv->wep_is_on;
3798 if (priv->wep_is_on) {
3799 if (priv->wep_key_len[priv->default_key] > 5)
3800 mib.encryption_level = 2;
3801 else
3802 mib.encryption_level = 1;
3803 } else {
3804 mib.encryption_level = 0;
3805 }
3806
3807 mib.default_key = priv->default_key;
3808 mib.exclude_unencrypted = priv->exclude_unencrypted;
3809
3810 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
3811 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
3812
3813 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3814 }
3815
3816 static void build_wpa_mib(struct atmel_private *priv)
3817 {
3818 /* This is for the later (WPA enabled) firmware. */
3819
3820 struct { /* NB this is matched to the hardware, don't change. */
3821 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3822 u8 receiver_address[6];
3823 u8 wep_is_on;
3824 u8 default_key; /* 0..3 */
3825 u8 group_key;
3826 u8 exclude_unencrypted;
3827 u8 encryption_type;
3828 u8 reserved;
3829
3830 u32 WEPICV_error_count;
3831 u32 WEP_excluded_count;
3832
3833 u8 key_RSC[4][8];
3834 } mib;
3835
3836 int i;
3837
3838 mib.wep_is_on = priv->wep_is_on;
3839 mib.exclude_unencrypted = priv->exclude_unencrypted;
3840 memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
3841
3842 /* zero all the keys before adding in valid ones. */
3843 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
3844
3845 if (priv->wep_is_on) {
3846 /* There's a comment in the Atmel code to the effect that this
3847 is only valid when still using WEP, it may need to be set to
3848 something to use WPA */
3849 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
3850
3851 mib.default_key = mib.group_key = 255;
3852 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3853 if (priv->wep_key_len[i] > 0) {
3854 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3855 if (i == priv->default_key) {
3856 mib.default_key = i;
3857 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
3858 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
3859 } else {
3860 mib.group_key = i;
3861 priv->group_cipher_suite = priv->pairwise_cipher_suite;
3862 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
3863 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
3864 }
3865 }
3866 }
3867 if (mib.default_key == 255)
3868 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3869 if (mib.group_key == 255)
3870 mib.group_key = mib.default_key;
3871
3872 }
3873
3874 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3875 }
3876
3877 static int reset_atmel_card(struct net_device *dev)
3878 {
3879 /* do everything necessary to wake up the hardware, including
3880 waiting for the lightning strike and throwing the knife switch....
3881
3882 set all the Mib values which matter in the card to match
3883 their settings in the atmel_private structure. Some of these
3884 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3885 can only be changed by tearing down the world and coming back through
3886 here.
3887
3888 This routine is also responsible for initialising some
3889 hardware-specific fields in the atmel_private structure,
3890 including a copy of the firmware's hostinfo structure
3891 which is the route into the rest of the firmware datastructures. */
3892
3893 struct atmel_private *priv = netdev_priv(dev);
3894 u8 configuration;
3895 int old_state = priv->station_state;
3896 int err = 0;
3897
3898 /* data to add to the firmware names, in priority order
3899 this implemenents firmware versioning */
3900
3901 static char *firmware_modifier[] = {
3902 "-wpa",
3903 "",
3904 NULL
3905 };
3906
3907 /* reset pccard */
3908 if (priv->bus_type == BUS_TYPE_PCCARD)
3909 atmel_write16(priv->dev, GCR, 0x0060);
3910
3911 /* stop card , disable interrupts */
3912 atmel_write16(priv->dev, GCR, 0x0040);
3913
3914 if (priv->card_type == CARD_TYPE_EEPROM) {
3915 /* copy in firmware if needed */
3916 const struct firmware *fw_entry = NULL;
3917 const unsigned char *fw;
3918 int len = priv->firmware_length;
3919 if (!(fw = priv->firmware)) {
3920 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3921 if (strlen(priv->firmware_id) == 0) {
3922 printk(KERN_INFO
3923 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3924 dev->name);
3925 printk(KERN_INFO
3926 "%s: if not, use the firmware= module parameter.\n",
3927 dev->name);
3928 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3929 }
3930 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3931 if (err != 0) {
3932 printk(KERN_ALERT
3933 "%s: firmware %s is missing, cannot continue.\n",
3934 dev->name, priv->firmware_id);
3935 return err;
3936 }
3937 } else {
3938 int fw_index = 0;
3939 int success = 0;
3940
3941 /* get firmware filename entry based on firmware type ID */
3942 while (fw_table[fw_index].fw_type != priv->firmware_type
3943 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3944 fw_index++;
3945
3946 /* construct the actual firmware file name */
3947 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3948 int i;
3949 for (i = 0; firmware_modifier[i]; i++) {
3950 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3951 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3952 priv->firmware_id[31] = '\0';
3953 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3954 success = 1;
3955 break;
3956 }
3957 }
3958 }
3959 if (!success) {
3960 printk(KERN_ALERT
3961 "%s: firmware %s is missing, cannot start.\n",
3962 dev->name, priv->firmware_id);
3963 priv->firmware_id[0] = '\0';
3964 return -ENOENT;
3965 }
3966 }
3967
3968 fw = fw_entry->data;
3969 len = fw_entry->size;
3970 }
3971
3972 if (len <= 0x6000) {
3973 atmel_write16(priv->dev, BSR, BSS_IRAM);
3974 atmel_copy_to_card(priv->dev, 0, fw, len);
3975 atmel_set_gcr(priv->dev, GCR_REMAP);
3976 } else {
3977 /* Remap */
3978 atmel_set_gcr(priv->dev, GCR_REMAP);
3979 atmel_write16(priv->dev, BSR, BSS_IRAM);
3980 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3981 atmel_write16(priv->dev, BSR, 0x2ff);
3982 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3983 }
3984
3985 release_firmware(fw_entry);
3986 }
3987
3988 err = atmel_wakeup_firmware(priv);
3989 if (err != 0)
3990 return err;
3991
3992 /* Check the version and set the correct flag for wpa stuff,
3993 old and new firmware is incompatible.
3994 The pre-wpa 3com firmware reports major version 5,
3995 the wpa 3com firmware is major version 4 and doesn't need
3996 the 3com broken-ness filter. */
3997 priv->use_wpa = (priv->host_info.major_version == 4);
3998 priv->radio_on_broken = (priv->host_info.major_version == 5);
3999
4000 /* unmask all irq sources */
4001 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
4002
4003 /* int Tx system and enable Tx */
4004 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4005 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4006 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4007 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4008
4009 priv->tx_desc_free = priv->host_info.tx_desc_count;
4010 priv->tx_desc_head = 0;
4011 priv->tx_desc_tail = 0;
4012 priv->tx_desc_previous = 0;
4013 priv->tx_free_mem = priv->host_info.tx_buff_size;
4014 priv->tx_buff_head = 0;
4015 priv->tx_buff_tail = 0;
4016
4017 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4018 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4019 configuration | FUNC_CTRL_TxENABLE);
4020
4021 /* init Rx system and enable */
4022 priv->rx_desc_head = 0;
4023
4024 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4025 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
4026 configuration | FUNC_CTRL_RxENABLE);
4027
4028 if (!priv->radio_on_broken) {
4029 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
4030 CMD_STATUS_REJECTED_RADIO_OFF) {
4031 printk(KERN_INFO "%s: cannot turn the radio on.\n",
4032 dev->name);
4033 return -EIO;
4034 }
4035 }
4036
4037 /* set up enough MIB values to run. */
4038 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4039 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4040 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4041 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4042 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4043 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4044 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
4045 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
4046 priv->dev->dev_addr, 6);
4047 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4048 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4049 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4050 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4051 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4052 if (priv->use_wpa)
4053 build_wpa_mib(priv);
4054 else
4055 build_wep_mib(priv);
4056
4057 if (old_state == STATION_STATE_READY) {
4058 union iwreq_data wrqu;
4059
4060 wrqu.data.length = 0;
4061 wrqu.data.flags = 0;
4062 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4063 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4064 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4065 }
4066
4067 return 0;
4068 }
4069
4070 static void atmel_send_command(struct atmel_private *priv, int command,
4071 void *cmd, int cmd_size)
4072 {
4073 if (cmd)
4074 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
4075 cmd, cmd_size);
4076
4077 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4078 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4079 }
4080
4081 static int atmel_send_command_wait(struct atmel_private *priv, int command,
4082 void *cmd, int cmd_size)
4083 {
4084 int i, status;
4085
4086 atmel_send_command(priv, command, cmd, cmd_size);
4087
4088 for (i = 5000; i; i--) {
4089 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
4090 if (status != CMD_STATUS_IDLE &&
4091 status != CMD_STATUS_IN_PROGRESS)
4092 break;
4093 udelay(20);
4094 }
4095
4096 if (i == 0) {
4097 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4098 status = CMD_STATUS_HOST_ERROR;
4099 } else {
4100 if (command != CMD_EnableRadio)
4101 status = CMD_STATUS_COMPLETE;
4102 }
4103
4104 return status;
4105 }
4106
4107 static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4108 {
4109 struct get_set_mib m;
4110 m.type = type;
4111 m.size = 1;
4112 m.index = index;
4113
4114 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4115 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4116 }
4117
4118 static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4119 {
4120 struct get_set_mib m;
4121 m.type = type;
4122 m.size = 1;
4123 m.index = index;
4124 m.data[0] = data;
4125
4126 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4127 }
4128
4129 static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4130 u16 data)
4131 {
4132 struct get_set_mib m;
4133 m.type = type;
4134 m.size = 2;
4135 m.index = index;
4136 m.data[0] = data;
4137 m.data[1] = data >> 8;
4138
4139 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4140 }
4141
4142 static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4143 u8 *data, int data_len)
4144 {
4145 struct get_set_mib m;
4146 m.type = type;
4147 m.size = data_len;
4148 m.index = index;
4149
4150 if (data_len > MIB_MAX_DATA_BYTES)
4151 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4152
4153 memcpy(m.data, data, data_len);
4154 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4155 }
4156
4157 static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4158 u8 *data, int data_len)
4159 {
4160 struct get_set_mib m;
4161 m.type = type;
4162 m.size = data_len;
4163 m.index = index;
4164
4165 if (data_len > MIB_MAX_DATA_BYTES)
4166 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
4167
4168 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4169 atmel_copy_to_host(priv->dev, data,
4170 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4171 }
4172
4173 static void atmel_writeAR(struct net_device *dev, u16 data)
4174 {
4175 int i;
4176 outw(data, dev->base_addr + AR);
4177 /* Address register appears to need some convincing..... */
4178 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
4179 outw(data, dev->base_addr + AR);
4180 }
4181
4182 static void atmel_copy_to_card(struct net_device *dev, u16 dest,
4183 const unsigned char *src, u16 len)
4184 {
4185 int i;
4186 atmel_writeAR(dev, dest);
4187 if (dest % 2) {
4188 atmel_write8(dev, DR, *src);
4189 src++; len--;
4190 }
4191 for (i = len; i > 1 ; i -= 2) {
4192 u8 lb = *src++;
4193 u8 hb = *src++;
4194 atmel_write16(dev, DR, lb | (hb << 8));
4195 }
4196 if (i)
4197 atmel_write8(dev, DR, *src);
4198 }
4199
4200 static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4201 u16 src, u16 len)
4202 {
4203 int i;
4204 atmel_writeAR(dev, src);
4205 if (src % 2) {
4206 *dest = atmel_read8(dev, DR);
4207 dest++; len--;
4208 }
4209 for (i = len; i > 1 ; i -= 2) {
4210 u16 hw = atmel_read16(dev, DR);
4211 *dest++ = hw;
4212 *dest++ = hw >> 8;
4213 }
4214 if (i)
4215 *dest = atmel_read8(dev, DR);
4216 }
4217
4218 static void atmel_set_gcr(struct net_device *dev, u16 mask)
4219 {
4220 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4221 }
4222
4223 static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4224 {
4225 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4226 }
4227
4228 static int atmel_lock_mac(struct atmel_private *priv)
4229 {
4230 int i, j = 20;
4231 retry:
4232 for (i = 5000; i; i--) {
4233 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4234 break;
4235 udelay(20);
4236 }
4237
4238 if (!i)
4239 return 0; /* timed out */
4240
4241 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4242 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4243 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
4244 if (!j--)
4245 return 0; /* timed out */
4246 goto retry;
4247 }
4248
4249 return 1;
4250 }
4251
4252 static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4253 {
4254 atmel_writeAR(priv->dev, pos);
4255 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4256 atmel_write16(priv->dev, DR, data >> 16);
4257 }
4258
4259 /***************************************************************************/
4260 /* There follows the source form of the MAC address reading firmware */
4261 /***************************************************************************/
4262 #if 0
4263
4264 /* Copyright 2003 Matthew T. Russotto */
4265 /* But derived from the Atmel 76C502 firmware written by Atmel and */
4266 /* included in "atmel wireless lan drivers" package */
4267 /**
4268 This file is part of net.russotto.AtmelMACFW, hereto referred to
4269 as AtmelMACFW
4270
4271 AtmelMACFW is free software; you can redistribute it and/or modify
4272 it under the terms of the GNU General Public License version 2
4273 as published by the Free Software Foundation.
4274
4275 AtmelMACFW is distributed in the hope that it will be useful,
4276 but WITHOUT ANY WARRANTY; without even the implied warranty of
4277 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4278 GNU General Public License for more details.
4279
4280 You should have received a copy of the GNU General Public License
4281 along with AtmelMACFW; if not, write to the Free Software
4282 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
4283
4284 ****************************************************************************/
4285 /* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4286 /* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4287 /* It only works on SPI EEPROM versions of the card. */
4288
4289 /* This firmware initializes the SPI controller and clock, reads the MAC */
4290 /* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4291 /* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4292 /* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4293 /* MR4, for investigational purposes (maybe we can determine chip type */
4294 /* from that?) */
4295
4296 .org 0
4297 .set MRBASE, 0x8000000
4298 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4299 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4300 .set SRAM_BASE, 0x02000000
4301 .set SP_BASE, 0x0F300000
4302 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4303 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4304 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4305 .set STACK_BASE, 0x5600
4306 .set SP_SR, 0x10
4307 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4308 .set SP_RDRF, 1 /* status register bit -- RDR full */
4309 .set SP_SWRST, 0x80
4310 .set SP_SPIEN, 0x1
4311 .set SP_CR, 0 /* control register */
4312 .set SP_MR, 4 /* mode register */
4313 .set SP_RDR, 0x08 /* Read Data Register */
4314 .set SP_TDR, 0x0C /* Transmit Data Register */
4315 .set SP_CSR0, 0x30 /* chip select registers */
4316 .set SP_CSR1, 0x34
4317 .set SP_CSR2, 0x38
4318 .set SP_CSR3, 0x3C
4319 .set NVRAM_CMD_RDSR, 5 /* read status register */
4320 .set NVRAM_CMD_READ, 3 /* read data */
4321 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4322 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4323 serial output, since SO is normally high. But it
4324 does cause 8 clock cycles and thus 8 bits to be
4325 clocked in to the chip. See Atmel's SPI
4326 controller (e.g. AT91M55800) timing and 4K
4327 SPI EEPROM manuals */
4328
4329 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4330 .set NVRAM_IMAGE, 0x02000200
4331 .set NVRAM_LENGTH, 0x0200
4332 .set MAC_ADDRESS_MIB, SRAM_BASE
4333 .set MAC_ADDRESS_LENGTH, 6
4334 .set MAC_BOOT_FLAG, 0x10
4335 .set MR1, 0
4336 .set MR2, 4
4337 .set MR3, 8
4338 .set MR4, 0xC
4339 RESET_VECTOR:
4340 b RESET_HANDLER
4341 UNDEF_VECTOR:
4342 b HALT1
4343 SWI_VECTOR:
4344 b HALT1
4345 IABORT_VECTOR:
4346 b HALT1
4347 DABORT_VECTOR:
4348 RESERVED_VECTOR:
4349 b HALT1
4350 IRQ_VECTOR:
4351 b HALT1
4352 FIQ_VECTOR:
4353 b HALT1
4354 HALT1: b HALT1
4355 RESET_HANDLER:
4356 mov r0, #CPSR_INITIAL
4357 msr CPSR_c, r0 /* This is probably unnecessary */
4358
4359 /* I'm guessing this is initializing clock generator electronics for SPI */
4360 ldr r0, =SPI_CGEN_BASE
4361 mov r1, #0
4362 mov r1, r1, lsl #3
4363 orr r1, r1, #0
4364 str r1, [r0]
4365 ldr r1, [r0, #28]
4366 bic r1, r1, #16
4367 str r1, [r0, #28]
4368 mov r1, #1
4369 str r1, [r0, #8]
4370
4371 ldr r0, =MRBASE
4372 mov r1, #0
4373 strh r1, [r0, #MR1]
4374 strh r1, [r0, #MR2]
4375 strh r1, [r0, #MR3]
4376 strh r1, [r0, #MR4]
4377
4378 mov sp, #STACK_BASE
4379 bl SP_INIT
4380 mov r0, #10
4381 bl DELAY9
4382 bl GET_MAC_ADDR
4383 bl GET_WHOLE_NVRAM
4384 ldr r0, =MRBASE
4385 ldr r1, =MAC_ADDRESS_MIB
4386 strh r1, [r0, #MR2]
4387 ldr r1, =NVRAM_IMAGE
4388 strh r1, [r0, #MR4]
4389 mov r1, #MAC_BOOT_FLAG
4390 strh r1, [r0, #MR3]
4391 HALT2: b HALT2
4392 .func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4393 GET_WHOLE_NVRAM:
4394 stmdb sp!, {lr}
4395 mov r2, #0 /* 0th bytes of NVRAM */
4396 mov r3, #NVRAM_LENGTH
4397 mov r1, #0 /* not used in routine */
4398 ldr r0, =NVRAM_IMAGE
4399 bl NVRAM_XFER
4400 ldmia sp!, {lr}
4401 bx lr
4402 .endfunc
4403
4404 .func Get_MAC_Addr, GET_MAC_ADDR
4405 GET_MAC_ADDR:
4406 stmdb sp!, {lr}
4407 mov r2, #0x120 /* address of MAC Address within NVRAM */
4408 mov r3, #MAC_ADDRESS_LENGTH
4409 mov r1, #0 /* not used in routine */
4410 ldr r0, =MAC_ADDRESS_MIB
4411 bl NVRAM_XFER
4412 ldmia sp!, {lr}
4413 bx lr
4414 .endfunc
4415 .ltorg
4416 .func Delay9, DELAY9
4417 DELAY9:
4418 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
4419 DELAYLOOP:
4420 beq DELAY9_done
4421 subs r0, r0, #1
4422 b DELAYLOOP
4423 DELAY9_done:
4424 bx lr
4425 .endfunc
4426
4427 .func SP_Init, SP_INIT
4428 SP_INIT:
4429 mov r1, #SP_SWRST
4430 ldr r0, =SP_BASE
4431 str r1, [r0, #SP_CR] /* reset the SPI */
4432 mov r1, #0
4433 str r1, [r0, #SP_CR] /* release SPI from reset state */
4434 mov r1, #SP_SPIEN
4435 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4436 str r1, [r0, #SP_CR] /* enable the SPI */
4437
4438 /* My guess would be this turns on the SPI clock */
4439 ldr r3, =SPI_CGEN_BASE
4440 ldr r1, [r3, #28]
4441 orr r1, r1, #0x2000
4442 str r1, [r3, #28]
4443
4444 ldr r1, =0x2000c01
4445 str r1, [r0, #SP_CSR0]
4446 ldr r1, =0x2000201
4447 str r1, [r0, #SP_CSR1]
4448 str r1, [r0, #SP_CSR2]
4449 str r1, [r0, #SP_CSR3]
4450 ldr r1, [r0, #SP_SR]
4451 ldr r0, [r0, #SP_RDR]
4452 bx lr
4453 .endfunc
4454 .func NVRAM_Init, NVRAM_INIT
4455 NVRAM_INIT:
4456 ldr r1, =SP_BASE
4457 ldr r0, [r1, #SP_RDR]
4458 mov r0, #NVRAM_CMD_RDSR
4459 str r0, [r1, #SP_TDR]
4460 SP_loop1:
4461 ldr r0, [r1, #SP_SR]
4462 tst r0, #SP_TDRE
4463 beq SP_loop1
4464
4465 mov r0, #SPI_8CLOCKS
4466 str r0, [r1, #SP_TDR]
4467 SP_loop2:
4468 ldr r0, [r1, #SP_SR]
4469 tst r0, #SP_TDRE
4470 beq SP_loop2
4471
4472 ldr r0, [r1, #SP_RDR]
4473 SP_loop3:
4474 ldr r0, [r1, #SP_SR]
4475 tst r0, #SP_RDRF
4476 beq SP_loop3
4477
4478 ldr r0, [r1, #SP_RDR]
4479 and r0, r0, #255
4480 bx lr
4481 .endfunc
4482
4483 .func NVRAM_Xfer, NVRAM_XFER
4484 /* r0 = dest address */
4485 /* r1 = not used */
4486 /* r2 = src address within NVRAM */
4487 /* r3 = length */
4488 NVRAM_XFER:
4489 stmdb sp!, {r4, r5, lr}
4490 mov r5, r0 /* save r0 (dest address) */
4491 mov r4, r3 /* save r3 (length) */
4492 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4493 and r0, r0, #8
4494 add r0, r0, #NVRAM_CMD_READ
4495 ldr r1, =NVRAM_SCRATCH
4496 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4497 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
4498 _local1:
4499 bl NVRAM_INIT
4500 tst r0, #NVRAM_SR_RDY
4501 bne _local1
4502 mov r0, #20
4503 bl DELAY9
4504 mov r2, r4 /* length */
4505 mov r1, r5 /* dest address */
4506 mov r0, #2 /* bytes to transfer in command */
4507 bl NVRAM_XFER2
4508 ldmia sp!, {r4, r5, lr}
4509 bx lr
4510 .endfunc
4511
4512 .func NVRAM_Xfer2, NVRAM_XFER2
4513 NVRAM_XFER2:
4514 stmdb sp!, {r4, r5, r6, lr}
4515 ldr r4, =SP_BASE
4516 mov r3, #0
4517 cmp r0, #0
4518 bls _local2
4519 ldr r5, =NVRAM_SCRATCH
4520 _local4:
4521 ldrb r6, [r5, r3]
4522 str r6, [r4, #SP_TDR]
4523 _local3:
4524 ldr r6, [r4, #SP_SR]
4525 tst r6, #SP_TDRE
4526 beq _local3
4527 add r3, r3, #1
4528 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4529 blo _local4
4530 _local2:
4531 mov r3, #SPI_8CLOCKS
4532 str r3, [r4, #SP_TDR]
4533 ldr r0, [r4, #SP_RDR]
4534 _local5:
4535 ldr r0, [r4, #SP_SR]
4536 tst r0, #SP_RDRF
4537 beq _local5
4538 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 */
4539 mov r0, #0
4540 cmp r2, #0 /* r2 is # of bytes to copy in */
4541 bls _local6
4542 _local7:
4543 ldr r5, [r4, #SP_SR]
4544 tst r5, #SP_TDRE
4545 beq _local7
4546 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
4547 _local8:
4548 ldr r5, [r4, #SP_SR]
4549 tst r5, #SP_RDRF
4550 beq _local8
4551 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4552 strb r5, [r1], #1 /* postindexed */
4553 add r0, r0, #1
4554 cmp r0, r2
4555 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4556 _local6:
4557 mov r0, #200
4558 bl DELAY9
4559 ldmia sp!, {r4, r5, r6, lr}
4560 bx lr
4561 #endif
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