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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*** -*- linux-c -*- **********************************************************
2
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
John Daiker8830cb62009-03-08 22:18:35 -07005 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003-2004 Simon Kelley.
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
Carlo Perassi4d791aa2005-11-13 15:02:15 +03008 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,
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 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
Carlo Perassi4d791aa2005-11-13 15:02:15 +030034 For all queries about this code, please contact the current author,
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/init.h>
43
44#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/ptrace.h>
46#include <linux/slab.h>
47#include <linux/string.h>
48#include <linux/ctype.h>
49#include <linux/timer.h>
Harvey Harrison9a6ab762008-05-16 11:20:25 -070050#include <asm/byteorder.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include <asm/io.h>
52#include <asm/system.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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#include <linux/crc32.h>
65#include <linux/proc_fs.h>
66#include <linux/device.h>
67#include <linux/moduleparam.h>
68#include <linux/firmware.h>
S.Çağlar Onur6e33e302008-02-14 17:36:49 +020069#include <linux/jiffies.h>
Johannes Berg2c7060022008-10-30 22:09:54 +010070#include <linux/ieee80211.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070071#include "atmel.h"
72
73#define DRIVER_MAJOR 0
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +000074#define DRIVER_MINOR 98
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
76MODULE_AUTHOR("Simon Kelley");
77MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
78MODULE_LICENSE("GPL");
79MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
80
Carlo Perassi4d791aa2005-11-13 15:02:15 +030081/* The name of the firmware file to be loaded
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 over-rides any automatic selection */
83static char *firmware = NULL;
84module_param(firmware, charp, 0);
85
86/* table of firmware file names */
Carlo Perassi4d791aa2005-11-13 15:02:15 +030087static struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 AtmelFWType fw_type;
89 const char *fw_file;
90 const char *fw_file_ext;
91} fw_table[] = {
John Daiker8830cb62009-03-08 22:18:35 -070092 { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
93 { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
94 { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
95 { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
96 { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
97 { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
98 { ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" },
99 { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
100 { ATMEL_FW_TYPE_NONE, NULL, NULL }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101};
Ben Hutchingsb98a0322009-11-07 21:58:05 +0000102MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
103MODULE_FIRMWARE("atmel_at76c502.bin");
104MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
105MODULE_FIRMWARE("atmel_at76c502d.bin");
106MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
107MODULE_FIRMWARE("atmel_at76c502e.bin");
108MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
109MODULE_FIRMWARE("atmel_at76c502_3com.bin");
110MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
111MODULE_FIRMWARE("atmel_at76c504.bin");
112MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
113MODULE_FIRMWARE("atmel_at76c504_2958.bin");
114MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
115MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
116MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
117MODULE_FIRMWARE("atmel_at76c506.bin");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
119#define MAX_SSID_LENGTH 32
120#define MGMT_JIFFIES (256 * HZ / 100)
121
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300122#define MAX_BSS_ENTRIES 64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
124/* registers */
John Daiker8830cb62009-03-08 22:18:35 -0700125#define GCR 0x00 /* (SIR0) General Configuration Register */
126#define BSR 0x02 /* (SIR1) Bank Switching Select Register */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127#define AR 0x04
128#define DR 0x08
John Daiker8830cb62009-03-08 22:18:35 -0700129#define MR1 0x12 /* Mirror Register 1 */
130#define MR2 0x14 /* Mirror Register 2 */
131#define MR3 0x16 /* Mirror Register 3 */
132#define MR4 0x18 /* Mirror Register 4 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
134#define GPR1 0x0c
135#define GPR2 0x0e
136#define GPR3 0x10
John Daiker8830cb62009-03-08 22:18:35 -0700137/*
138 * Constants for the GCR register.
139 */
140#define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */
141#define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */
142#define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */
143#define GCR_ENINT 0x0002 /* Enable Interrupts */
144#define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
John Daiker8830cb62009-03-08 22:18:35 -0700146#define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */
147#define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */
148/*
149 *Constants for the MR registers.
150 */
151#define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */
152#define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */
153#define MAC_INIT_OK 0x0002 /* MAC boot has been completed */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155#define MIB_MAX_DATA_BYTES 212
156#define MIB_HEADER_SIZE 4 /* first four fields */
157
158struct get_set_mib {
John Daiker8830cb62009-03-08 22:18:35 -0700159 u8 type;
160 u8 size;
161 u8 index;
162 u8 reserved;
163 u8 data[MIB_MAX_DATA_BYTES];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164};
165
166struct rx_desc {
John Daiker8830cb62009-03-08 22:18:35 -0700167 u32 Next;
168 u16 MsduPos;
169 u16 MsduSize;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300170
John Daiker8830cb62009-03-08 22:18:35 -0700171 u8 State;
172 u8 Status;
173 u8 Rate;
174 u8 Rssi;
175 u8 LinkQuality;
176 u8 PreambleType;
177 u16 Duration;
178 u32 RxTime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179};
180
181#define RX_DESC_FLAG_VALID 0x80
182#define RX_DESC_FLAG_CONSUMED 0x40
183#define RX_DESC_FLAG_IDLE 0x00
184
185#define RX_STATUS_SUCCESS 0x00
186
187#define RX_DESC_MSDU_POS_OFFSET 4
188#define RX_DESC_MSDU_SIZE_OFFSET 6
189#define RX_DESC_FLAGS_OFFSET 8
190#define RX_DESC_STATUS_OFFSET 9
191#define RX_DESC_RSSI_OFFSET 11
192#define RX_DESC_LINK_QUALITY_OFFSET 12
193#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
194#define RX_DESC_DURATION_OFFSET 14
195#define RX_DESC_RX_TIME_OFFSET 16
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197struct tx_desc {
198 u32 NextDescriptor;
199 u16 TxStartOfFrame;
200 u16 TxLength;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 u8 TxState;
203 u8 TxStatus;
204 u8 RetryCount;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300205
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 u8 TxRate;
207
208 u8 KeyIndex;
209 u8 ChiperType;
210 u8 ChipreLength;
John Daiker8830cb62009-03-08 22:18:35 -0700211 u8 Reserved1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213 u8 Reserved;
214 u8 PacketType;
215 u16 HostTxLength;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216};
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218#define TX_DESC_NEXT_OFFSET 0
219#define TX_DESC_POS_OFFSET 4
220#define TX_DESC_SIZE_OFFSET 6
221#define TX_DESC_FLAGS_OFFSET 8
222#define TX_DESC_STATUS_OFFSET 9
223#define TX_DESC_RETRY_OFFSET 10
224#define TX_DESC_RATE_OFFSET 11
225#define TX_DESC_KEY_INDEX_OFFSET 12
226#define TX_DESC_CIPHER_TYPE_OFFSET 13
227#define TX_DESC_CIPHER_LENGTH_OFFSET 14
228#define TX_DESC_PACKET_TYPE_OFFSET 17
229#define TX_DESC_HOST_LENGTH_OFFSET 18
230
John Daiker8830cb62009-03-08 22:18:35 -0700231/*
232 * Host-MAC interface
233 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235#define TX_STATUS_SUCCESS 0x00
236
237#define TX_FIRM_OWN 0x80
238#define TX_DONE 0x40
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240#define TX_ERROR 0x01
241
242#define TX_PACKET_TYPE_DATA 0x01
243#define TX_PACKET_TYPE_MGMT 0x02
244
John Daiker8830cb62009-03-08 22:18:35 -0700245#define ISR_EMPTY 0x00 /* no bits set in ISR */
246#define ISR_TxCOMPLETE 0x01 /* packet transmitted */
247#define ISR_RxCOMPLETE 0x02 /* packet received */
248#define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */
249#define ISR_FATAL_ERROR 0x08 /* Fatal error */
250#define ISR_COMMAND_COMPLETE 0x10 /* command completed */
251#define ISR_OUT_OF_RANGE 0x20 /* command completed */
252#define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300253#define ISR_GENERIC_IRQ 0x80
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255#define Local_Mib_Type 0x01
256#define Mac_Address_Mib_Type 0x02
257#define Mac_Mib_Type 0x03
258#define Statistics_Mib_Type 0x04
259#define Mac_Mgmt_Mib_Type 0x05
260#define Mac_Wep_Mib_Type 0x06
261#define Phy_Mib_Type 0x07
262#define Multi_Domain_MIB 0x08
263
264#define MAC_MGMT_MIB_CUR_BSSID_POS 14
265#define MAC_MIB_FRAG_THRESHOLD_POS 8
266#define MAC_MIB_RTS_THRESHOLD_POS 10
267#define MAC_MIB_SHORT_RETRY_POS 16
268#define MAC_MIB_LONG_RETRY_POS 17
269#define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
270#define MAC_MGMT_MIB_BEACON_PER_POS 0
271#define MAC_MGMT_MIB_STATION_ID_POS 6
272#define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
273#define MAC_MGMT_MIB_CUR_BSSID_POS 14
274#define MAC_MGMT_MIB_PS_MODE_POS 53
275#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
276#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
277#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
278#define PHY_MIB_CHANNEL_POS 14
279#define PHY_MIB_RATE_SET_POS 20
280#define PHY_MIB_REG_DOMAIN_POS 26
281#define LOCAL_MIB_AUTO_TX_RATE_POS 3
282#define LOCAL_MIB_SSID_SIZE 5
283#define LOCAL_MIB_TX_PROMISCUOUS_POS 6
284#define LOCAL_MIB_TX_MGMT_RATE_POS 7
285#define LOCAL_MIB_TX_CONTROL_RATE_POS 8
286#define LOCAL_MIB_PREAMBLE_TYPE 9
287#define MAC_ADDR_MIB_MAC_ADDR_POS 0
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289#define CMD_Set_MIB_Vars 0x01
290#define CMD_Get_MIB_Vars 0x02
291#define CMD_Scan 0x03
292#define CMD_Join 0x04
293#define CMD_Start 0x05
294#define CMD_EnableRadio 0x06
295#define CMD_DisableRadio 0x07
296#define CMD_SiteSurvey 0x0B
297
298#define CMD_STATUS_IDLE 0x00
299#define CMD_STATUS_COMPLETE 0x01
300#define CMD_STATUS_UNKNOWN 0x02
301#define CMD_STATUS_INVALID_PARAMETER 0x03
302#define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
303#define CMD_STATUS_TIME_OUT 0x07
304#define CMD_STATUS_IN_PROGRESS 0x08
305#define CMD_STATUS_REJECTED_RADIO_OFF 0x09
306#define CMD_STATUS_HOST_ERROR 0xFF
307#define CMD_STATUS_BUSY 0xFE
308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309#define CMD_BLOCK_COMMAND_OFFSET 0
310#define CMD_BLOCK_STATUS_OFFSET 1
311#define CMD_BLOCK_PARAMETERS_OFFSET 4
312
313#define SCAN_OPTIONS_SITE_SURVEY 0x80
314
315#define MGMT_FRAME_BODY_OFFSET 24
316#define MAX_AUTHENTICATION_RETRIES 3
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300317#define MAX_ASSOCIATION_RETRIES 3
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
319#define AUTHENTICATION_RESPONSE_TIME_OUT 1000
320
321#define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
322#define LOOP_RETRY_LIMIT 500000
323
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300324#define ACTIVE_MODE 1
325#define PS_MODE 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327#define MAX_ENCRYPTION_KEYS 4
328#define MAX_ENCRYPTION_KEY_SIZE 40
329
John Daiker8830cb62009-03-08 22:18:35 -0700330/*
331 * 802.11 related definitions
332 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
John Daiker8830cb62009-03-08 22:18:35 -0700334/*
335 * Regulatory Domains
336 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
John Daiker8830cb62009-03-08 22:18:35 -0700338#define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */
339#define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */
340#define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */
341#define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */
342#define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */
343#define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */
344#define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */
345#define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300347#define BSS_TYPE_AD_HOC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348#define BSS_TYPE_INFRASTRUCTURE 2
349
350#define SCAN_TYPE_ACTIVE 0
351#define SCAN_TYPE_PASSIVE 1
352
353#define LONG_PREAMBLE 0
354#define SHORT_PREAMBLE 1
355#define AUTO_PREAMBLE 2
356
357#define DATA_FRAME_WS_HEADER_SIZE 30
358
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300359/* promiscuous mode control */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360#define PROM_MODE_OFF 0x0
361#define PROM_MODE_UNKNOWN 0x1
362#define PROM_MODE_CRC_FAILED 0x2
363#define PROM_MODE_DUPLICATED 0x4
364#define PROM_MODE_MGMT 0x8
365#define PROM_MODE_CTRL 0x10
366#define PROM_MODE_BAD_PROTOCOL 0x20
367
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300368#define IFACE_INT_STATUS_OFFSET 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369#define IFACE_INT_MASK_OFFSET 1
370#define IFACE_LOCKOUT_HOST_OFFSET 2
371#define IFACE_LOCKOUT_MAC_OFFSET 3
372#define IFACE_FUNC_CTRL_OFFSET 28
373#define IFACE_MAC_STAT_OFFSET 30
374#define IFACE_GENERIC_INT_TYPE_OFFSET 32
375
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300376#define CIPHER_SUITE_NONE 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377#define CIPHER_SUITE_WEP_64 1
378#define CIPHER_SUITE_TKIP 2
379#define CIPHER_SUITE_AES 3
380#define CIPHER_SUITE_CCX 4
381#define CIPHER_SUITE_WEP_128 5
382
John Daiker8830cb62009-03-08 22:18:35 -0700383/*
384 * IFACE MACROS & definitions
385 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
John Daiker8830cb62009-03-08 22:18:35 -0700387/*
388 * FuncCtrl field:
389 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390#define FUNC_CTRL_TxENABLE 0x10
391#define FUNC_CTRL_RxENABLE 0x20
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300392#define FUNC_CTRL_INIT_COMPLETE 0x01
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393
394/* A stub firmware image which reads the MAC address from NVRAM on the card.
395 For copyright information and source see the end of this file. */
396static u8 mac_reader[] = {
John Daiker8830cb62009-03-08 22:18:35 -0700397 0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
398 0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
399 0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
400 0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
401 0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
402 0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
403 0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
404 0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
405 0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
406 0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
407 0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
408 0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
409 0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
410 0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
411 0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
412 0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
413 0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
414 0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
415 0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
416 0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
417 0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
418 0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
419 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
420 0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
421 0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
422 0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
423 0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
424 0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
425 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
426 0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
427 0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
428 0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
429 0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
430 0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
431 0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
432 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
433 0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
434 0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
435 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
436 0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
437 0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
438 0x00, 0x01, 0x00, 0x02
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439};
440
441struct atmel_private {
442 void *card; /* Bus dependent stucture varies for PCcard */
443 int (*present_callback)(void *); /* And callback which uses it */
444 char firmware_id[32];
445 AtmelFWType firmware_type;
446 u8 *firmware;
447 int firmware_length;
448 struct timer_list management_timer;
449 struct net_device *dev;
450 struct device *sys_dev;
451 struct iw_statistics wstats;
John Daiker8830cb62009-03-08 22:18:35 -0700452 spinlock_t irqlock, timerlock; /* spinlocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300454 enum {
455 CARD_TYPE_PARALLEL_FLASH,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 CARD_TYPE_SPI_FLASH,
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300457 CARD_TYPE_EEPROM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 } card_type;
459 int do_rx_crc; /* If we need to CRC incoming packets */
460 int probe_crc; /* set if we don't yet know */
461 int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
462 u16 rx_desc_head;
463 u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
464 u16 tx_free_mem, tx_buff_head, tx_buff_tail;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300465
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 u16 frag_seq, frag_len, frag_no;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300467 u8 frag_source[6];
468
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
470 u8 group_cipher_suite, pairwise_cipher_suite;
471 u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300472 int wep_key_len[MAX_ENCRYPTION_KEYS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 int use_wpa, radio_on_broken; /* firmware dependent stuff. */
474
475 u16 host_info_base;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300476 struct host_info_struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 /* NB this is matched to the hardware, don't change. */
478 u8 volatile int_status;
479 u8 volatile int_mask;
480 u8 volatile lockout_host;
481 u8 volatile lockout_mac;
482
483 u16 tx_buff_pos;
484 u16 tx_buff_size;
485 u16 tx_desc_pos;
486 u16 tx_desc_count;
487
488 u16 rx_buff_pos;
489 u16 rx_buff_size;
490 u16 rx_desc_pos;
491 u16 rx_desc_count;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300492
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 u16 build_version;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300494 u16 command_pos;
495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 u16 major_version;
497 u16 minor_version;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300498
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 u16 func_ctrl;
500 u16 mac_status;
501 u16 generic_IRQ_type;
502 u8 reserved[2];
503 } host_info;
504
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300505 enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 STATION_STATE_SCANNING,
507 STATION_STATE_JOINNING,
508 STATION_STATE_AUTHENTICATING,
509 STATION_STATE_ASSOCIATING,
510 STATION_STATE_READY,
511 STATION_STATE_REASSOCIATING,
512 STATION_STATE_DOWN,
513 STATION_STATE_MGMT_ERROR
514 } station_state;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300515
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 int operating_mode, power_mode;
517 time_t last_qual;
518 int beacons_this_sec;
519 int channel;
520 int reg_domain, config_reg_domain;
521 int tx_rate;
522 int auto_tx_rate;
523 int rts_threshold;
524 int frag_threshold;
525 int long_retry, short_retry;
526 int preamble;
527 int default_beacon_period, beacon_period, listen_interval;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300528 int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
530 enum {
531 SITE_SURVEY_IDLE,
532 SITE_SURVEY_IN_PROGRESS,
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300533 SITE_SURVEY_COMPLETED
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 } site_survey_state;
S.Çağlar Onur6e33e302008-02-14 17:36:49 +0200535 unsigned long last_survey;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
537 int station_was_associated, station_is_associated;
538 int fast_scan;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300539
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 struct bss_info {
541 int channel;
542 int SSIDsize;
543 int RSSI;
544 int UsingWEP;
545 int preamble;
546 int beacon_period;
547 int BSStype;
548 u8 BSSID[6];
549 u8 SSID[MAX_SSID_LENGTH];
550 } BSSinfo[MAX_BSS_ENTRIES];
551 int BSS_list_entries, current_BSS;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300552 int connect_to_any_BSS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 int SSID_size, new_SSID_size;
554 u8 CurrentBSSID[6], BSSID[6];
555 u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
556 u64 last_beacon_timestamp;
557 u8 rx_buf[MAX_WIRELESS_BODY];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558};
559
John Daiker8830cb62009-03-08 22:18:35 -0700560static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561
562static const struct {
563 int reg_domain;
564 int min, max;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300565 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
567 { REG_DOMAIN_DOC, 1, 11, "Canada" },
568 { REG_DOMAIN_ETSI, 1, 13, "Europe" },
569 { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300570 { REG_DOMAIN_FRANCE, 10, 13, "France" },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 { REG_DOMAIN_MKK, 14, 14, "MKK" },
572 { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
573 { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
574
575static void build_wpa_mib(struct atmel_private *priv);
576static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300577static void atmel_copy_to_card(struct net_device *dev, u16 dest,
David Woodhouse2f26e8a2008-05-24 00:09:29 +0100578 const unsigned char *src, u16 len);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300579static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
580 u16 src, u16 len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581static void atmel_set_gcr(struct net_device *dev, u16 mask);
582static void atmel_clear_gcr(struct net_device *dev, u16 mask);
583static int atmel_lock_mac(struct atmel_private *priv);
584static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
585static void atmel_command_irq(struct atmel_private *priv);
586static int atmel_validate_channel(struct atmel_private *priv, int channel);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300587static void atmel_management_frame(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +0100588 struct ieee80211_hdr *header,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 u16 frame_len, u8 rssi);
590static void atmel_management_timer(u_long a);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300591static void atmel_send_command(struct atmel_private *priv, int command,
592 void *cmd, int cmd_size);
593static int atmel_send_command_wait(struct atmel_private *priv, int command,
594 void *cmd, int cmd_size);
595static void atmel_transmit_management_frame(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +0100596 struct ieee80211_hdr *header,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 u8 *body, int body_len);
598
599static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300600static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
601 u8 data);
602static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
603 u16 data);
604static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
605 u8 *data, int data_len);
606static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
607 u8 *data, int data_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608static void atmel_scan(struct atmel_private *priv, int specific_ssid);
609static void atmel_join_bss(struct atmel_private *priv, int bss_index);
610static void atmel_smooth_qual(struct atmel_private *priv);
611static void atmel_writeAR(struct net_device *dev, u16 data);
612static int probe_atmel_card(struct net_device *dev);
Dmitry Torokhov5c877fe2006-10-08 00:14:30 -0400613static int reset_atmel_card(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614static void atmel_enter_state(struct atmel_private *priv, int new_state);
615int atmel_open (struct net_device *dev);
616
617static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
618{
619 return priv->host_info_base + offset;
620}
621
622static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
623{
624 return priv->host_info.command_pos + offset;
625}
626
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300627static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628{
629 return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
630}
631
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300632static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633{
634 return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
635}
636
637static inline u8 atmel_read8(struct net_device *dev, u16 offset)
638{
639 return inb(dev->base_addr + offset);
640}
641
642static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
643{
644 outb(data, dev->base_addr + offset);
645}
646
647static inline u16 atmel_read16(struct net_device *dev, u16 offset)
648{
649 return inw(dev->base_addr + offset);
650}
651
652static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
653{
654 outw(data, dev->base_addr + offset);
655}
656
657static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
658{
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300659 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 return atmel_read8(priv->dev, DR);
661}
662
663static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
664{
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300665 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 atmel_write8(priv->dev, DR, data);
667}
668
669static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
670{
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300671 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 return atmel_read16(priv->dev, DR);
673}
674
675static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
676{
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300677 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 atmel_write16(priv->dev, DR, data);
679}
680
681static const struct iw_handler_def atmel_handler_def;
682
683static void tx_done_irq(struct atmel_private *priv)
684{
685 int i;
686
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300687 for (i = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
689 i < priv->host_info.tx_desc_count;
690 i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
692 u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
693 u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
694
695 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
696
697 priv->tx_free_mem += msdu_size;
698 priv->tx_desc_free++;
699
700 if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
701 priv->tx_buff_head = 0;
702 else
703 priv->tx_buff_head += msdu_size;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300704
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300706 priv->tx_desc_head++ ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 else
708 priv->tx_desc_head = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300709
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 if (type == TX_PACKET_TYPE_DATA) {
711 if (status == TX_STATUS_SUCCESS)
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300712 priv->dev->stats.tx_packets++;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300713 else
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300714 priv->dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 netif_wake_queue(priv->dev);
716 }
717 }
718}
719
720static u16 find_tx_buff(struct atmel_private *priv, u16 len)
721{
722 u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
723
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300724 if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 return 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 if (bottom_free >= len)
728 return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300729
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 if (priv->tx_free_mem - bottom_free >= len) {
731 priv->tx_buff_tail = 0;
732 return priv->host_info.tx_buff_pos;
733 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300734
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 return 0;
736}
737
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300738static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
739 u16 len, u16 buff, u8 type)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740{
741 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
742 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
743 if (!priv->use_wpa)
744 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
745 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
746 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
747 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
748 if (priv->use_wpa) {
749 int cipher_type, cipher_length;
750 if (is_bcast) {
751 cipher_type = priv->group_cipher_suite;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300752 if (cipher_type == CIPHER_SUITE_WEP_64 ||
753 cipher_type == CIPHER_SUITE_WEP_128)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 cipher_length = 8;
755 else if (cipher_type == CIPHER_SUITE_TKIP)
756 cipher_length = 12;
757 else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
758 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
759 cipher_type = priv->pairwise_cipher_suite;
760 cipher_length = 8;
761 } else {
762 cipher_type = CIPHER_SUITE_NONE;
763 cipher_length = 0;
764 }
765 } else {
766 cipher_type = priv->pairwise_cipher_suite;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300767 if (cipher_type == CIPHER_SUITE_WEP_64 ||
768 cipher_type == CIPHER_SUITE_WEP_128)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 cipher_length = 8;
770 else if (cipher_type == CIPHER_SUITE_TKIP)
771 cipher_length = 12;
772 else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
773 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
774 cipher_type = priv->group_cipher_suite;
775 cipher_length = 8;
776 } else {
777 cipher_type = CIPHER_SUITE_NONE;
778 cipher_length = 0;
779 }
780 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300781
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300783 cipher_type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
785 cipher_length);
786 }
787 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
788 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
789 if (priv->tx_desc_previous != priv->tx_desc_tail)
790 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
791 priv->tx_desc_previous = priv->tx_desc_tail;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300792 if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 priv->tx_desc_tail++;
794 else
795 priv->tx_desc_tail = 0;
796 priv->tx_desc_free--;
797 priv->tx_free_mem -= len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798}
799
Stephen Hemmingerd0cf9c02009-08-31 19:50:57 +0000800static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801{
Dmitry Torokhov00a5ebf2006-10-08 00:14:28 -0400802 static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 struct atmel_private *priv = netdev_priv(dev);
Johannes Berg2c7060022008-10-30 22:09:54 +0100804 struct ieee80211_hdr header;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 unsigned long flags;
806 u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300807
808 if (priv->card && priv->present_callback &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 !(*priv->present_callback)(priv->card)) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300810 dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 dev_kfree_skb(skb);
Patrick McHardy6ed10652009-06-23 06:03:08 +0000812 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300814
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 if (priv->station_state != STATION_STATE_READY) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300816 dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 dev_kfree_skb(skb);
Patrick McHardy6ed10652009-06-23 06:03:08 +0000818 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300820
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 /* first ensure the timer func cannot run */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300822 spin_lock_bh(&priv->timerlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 /* then stop the hardware ISR */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300824 spin_lock_irqsave(&priv->irqlock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 /* nb doing the above in the opposite order will deadlock */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300828 12 first bytes (containing DA/SA) and put them in the appropriate
829 fields of the Wireless Header. Thus the packet length is then the
830 initial + 18 (+30-12) */
831
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 if (!(buff = find_tx_buff(priv, len + 18))) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300833 dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 spin_unlock_irqrestore(&priv->irqlock, flags);
835 spin_unlock_bh(&priv->timerlock);
836 netif_stop_queue(dev);
Patrick McHardy5b548142009-06-12 06:22:29 +0000837 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300839
Jeff Garzikb4538722005-05-12 22:48:20 -0400840 frame_ctl = IEEE80211_FTYPE_DATA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 header.duration_id = 0;
Johannes Berg2c7060022008-10-30 22:09:54 +0100842 header.seq_ctrl = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 if (priv->wep_is_on)
Jiri Bencf13baae2005-08-25 20:11:46 -0400844 frame_ctl |= IEEE80211_FCTL_PROTECTED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 if (priv->operating_mode == IW_MODE_ADHOC) {
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300846 skb_copy_from_linear_data(skb, &header.addr1, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 memcpy(&header.addr2, dev->dev_addr, 6);
848 memcpy(&header.addr3, priv->BSSID, 6);
849 } else {
Jeff Garzikb4538722005-05-12 22:48:20 -0400850 frame_ctl |= IEEE80211_FCTL_TODS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 memcpy(&header.addr1, priv->CurrentBSSID, 6);
852 memcpy(&header.addr2, dev->dev_addr, 6);
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300853 skb_copy_from_linear_data(skb, &header.addr3, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 if (priv->use_wpa)
857 memcpy(&header.addr4, SNAP_RFC1024, 6);
858
Johannes Berg2c7060022008-10-30 22:09:54 +0100859 header.frame_control = cpu_to_le16(frame_ctl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 /* Copy the wireless header into the card */
861 atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
862 /* Copy the packet sans its 802.3 header addresses which have been replaced */
863 atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
864 priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300865
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 /* low bit of first byte of destination tells us if broadcast */
867 tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300868 dev->stats.tx_bytes += len;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 spin_unlock_irqrestore(&priv->irqlock, flags);
871 spin_unlock_bh(&priv->timerlock);
872 dev_kfree_skb(skb);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300873
Patrick McHardy6ed10652009-06-23 06:03:08 +0000874 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875}
876
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300877static void atmel_transmit_management_frame(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +0100878 struct ieee80211_hdr *header,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 u8 *body, int body_len)
880{
881 u16 buff;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300882 int len = MGMT_FRAME_BODY_OFFSET + body_len;
883
884 if (!(buff = find_tx_buff(priv, len)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885 return;
886
887 atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
888 atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
889 priv->tx_buff_tail += len;
890 tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
891}
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300892
893static void fast_rx_path(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +0100894 struct ieee80211_hdr *header,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 u16 msdu_size, u16 rx_packet_loc, u32 crc)
896{
897 /* fast path: unfragmented packet copy directly into skbuf */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300898 u8 mac4[6];
899 struct sk_buff *skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 unsigned char *skbp;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 /* get the final, mac 4 header field, this tells us encapsulation */
903 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
904 msdu_size -= 6;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300905
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 if (priv->do_rx_crc) {
907 crc = crc32_le(crc, mac4, 6);
908 msdu_size -= 4;
909 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300910
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 if (!(skb = dev_alloc_skb(msdu_size + 14))) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300912 priv->dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 return;
914 }
915
916 skb_reserve(skb, 2);
917 skbp = skb_put(skb, msdu_size + 12);
918 atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300919
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 if (priv->do_rx_crc) {
921 u32 netcrc;
922 crc = crc32_le(crc, skbp + 12, msdu_size);
923 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
924 if ((crc ^ 0xffffffff) != netcrc) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300925 priv->dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 dev_kfree_skb(skb);
927 return;
928 }
929 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300930
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 memcpy(skbp, header->addr1, 6); /* destination address */
Johannes Berg2c7060022008-10-30 22:09:54 +0100932 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933 memcpy(&skbp[6], header->addr3, 6);
934 else
935 memcpy(&skbp[6], header->addr2, 6); /* source address */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300936
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 skb->protocol = eth_type_trans(skb, priv->dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300938 skb->ip_summed = CHECKSUM_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 netif_rx(skb);
Paulius Zaleckas736bc922008-05-06 23:50:30 +0300940 priv->dev->stats.rx_bytes += 12 + msdu_size;
941 priv->dev->stats.rx_packets++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942}
943
944/* Test to see if the packet in card memory at packet_loc has a valid CRC
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300945 It doesn't matter that this is slow: it is only used to proble the first few
946 packets. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
948{
949 int i = msdu_size - 4;
950 u32 netcrc, crc = 0xffffffff;
951
952 if (msdu_size < 4)
953 return 0;
954
955 atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300956
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 atmel_writeAR(priv->dev, packet_loc);
958 while (i--) {
959 u8 octet = atmel_read8(priv->dev, DR);
960 crc = crc32_le(crc, &octet, 1);
961 }
962
963 return (crc ^ 0xffffffff) == netcrc;
964}
965
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300966static void frag_rx_path(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +0100967 struct ieee80211_hdr *header,
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300968 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
969 u8 frag_no, int more_frags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970{
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300971 u8 mac4[6];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972 u8 source[6];
973 struct sk_buff *skb;
974
Johannes Berg2c7060022008-10-30 22:09:54 +0100975 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976 memcpy(source, header->addr3, 6);
977 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300978 memcpy(source, header->addr2, 6);
979
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 rx_packet_loc += 24; /* skip header */
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300981
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 if (priv->do_rx_crc)
983 msdu_size -= 4;
984
985 if (frag_no == 0) { /* first fragment */
986 atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
987 msdu_size -= 6;
988 rx_packet_loc += 6;
989
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300990 if (priv->do_rx_crc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 crc = crc32_le(crc, mac4, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300992
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993 priv->frag_seq = seq_no;
994 priv->frag_no = 1;
995 priv->frag_len = msdu_size;
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300996 memcpy(priv->frag_source, source, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 memcpy(&priv->rx_buf[6], source, 6);
998 memcpy(priv->rx_buf, header->addr1, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +0300999
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000 atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
1001
1002 if (priv->do_rx_crc) {
1003 u32 netcrc;
1004 crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
1005 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1006 if ((crc ^ 0xffffffff) != netcrc) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001007 priv->dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 memset(priv->frag_source, 0xff, 6);
1009 }
1010 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001011
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 } else if (priv->frag_no == frag_no &&
1013 priv->frag_seq == seq_no &&
1014 memcmp(priv->frag_source, source, 6) == 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001015
1016 atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 rx_packet_loc, msdu_size);
1018 if (priv->do_rx_crc) {
1019 u32 netcrc;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001020 crc = crc32_le(crc,
1021 &priv->rx_buf[12 + priv->frag_len],
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 msdu_size);
1023 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
1024 if ((crc ^ 0xffffffff) != netcrc) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001025 priv->dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 memset(priv->frag_source, 0xff, 6);
1027 more_frags = 1; /* don't send broken assembly */
1028 }
1029 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001030
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 priv->frag_len += msdu_size;
1032 priv->frag_no++;
1033
1034 if (!more_frags) { /* last one */
1035 memset(priv->frag_source, 0xff, 6);
1036 if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001037 priv->dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 } else {
1039 skb_reserve(skb, 2);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001040 memcpy(skb_put(skb, priv->frag_len + 12),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 priv->rx_buf,
1042 priv->frag_len + 12);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 skb->protocol = eth_type_trans(skb, priv->dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001044 skb->ip_summed = CHECKSUM_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 netif_rx(skb);
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001046 priv->dev->stats.rx_bytes += priv->frag_len + 12;
1047 priv->dev->stats.rx_packets++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 }
1049 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 } else
1051 priv->wstats.discard.fragment++;
1052}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001053
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054static void rx_done_irq(struct atmel_private *priv)
1055{
1056 int i;
Johannes Berg2c7060022008-10-30 22:09:54 +01001057 struct ieee80211_hdr header;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001058
1059 for (i = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
1061 i < priv->host_info.rx_desc_count;
1062 i++) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001063
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
1065 u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
1066 u32 crc = 0xffffffff;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001067
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 if (status != RX_STATUS_SUCCESS) {
1069 if (status == 0xc1) /* determined by experiment */
1070 priv->wstats.discard.nwid++;
1071 else
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001072 priv->dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 goto next;
1074 }
1075
1076 msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
1077 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001078
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 if (msdu_size < 30) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001080 priv->dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 goto next;
1082 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001083
Johannes Berg2c7060022008-10-30 22:09:54 +01001084 /* Get header as far as end of seq_ctrl */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
Johannes Berg2c7060022008-10-30 22:09:54 +01001086 frame_ctl = le16_to_cpu(header.frame_control);
1087 seq_control = le16_to_cpu(header.seq_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001089 /* probe for CRC use here if needed once five packets have
1090 arrived with the same crc status, we assume we know what's
1091 happening and stop probing */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 if (priv->probe_crc) {
Jiri Bencf13baae2005-08-25 20:11:46 -04001093 if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094 priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
1095 } else {
1096 priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
1097 }
1098 if (priv->do_rx_crc) {
1099 if (priv->crc_ok_cnt++ > 5)
1100 priv->probe_crc = 0;
1101 } else {
1102 if (priv->crc_ko_cnt++ > 5)
1103 priv->probe_crc = 0;
1104 }
1105 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001106
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 /* don't CRC header when WEP in use */
Jiri Bencf13baae2005-08-25 20:11:46 -04001108 if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
1110 }
1111 msdu_size -= 24; /* header */
1112
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001113 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
Jeff Garzikb4538722005-05-12 22:48:20 -04001114 int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
1115 u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
1116 u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001117
1118 if (!more_fragments && packet_fragment_no == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
1120 } else {
1121 frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
1122 packet_sequence_no, packet_fragment_no, more_fragments);
1123 }
1124 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001125
Jeff Garzikb4538722005-05-12 22:48:20 -04001126 if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 /* copy rest of packet into buffer */
1128 atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001129
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 /* we use the same buffer for frag reassembly and control packets */
1131 memset(priv->frag_source, 0xff, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001132
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 if (priv->do_rx_crc) {
1134 /* last 4 octets is crc */
1135 msdu_size -= 4;
1136 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
1137 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
Paulius Zaleckas736bc922008-05-06 23:50:30 +03001138 priv->dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139 goto next;
1140 }
1141 }
1142
1143 atmel_management_frame(priv, &header, msdu_size,
1144 atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001145 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001146
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001147next:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148 /* release descriptor */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001149 atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
1150
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001152 priv->rx_desc_head++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 else
1154 priv->rx_desc_head = 0;
1155 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001156}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157
David Howells7d12e782006-10-05 14:55:46 +01001158static irqreturn_t service_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159{
1160 struct net_device *dev = (struct net_device *) dev_id;
1161 struct atmel_private *priv = netdev_priv(dev);
1162 u8 isr;
1163 int i = -1;
Joe Perches3370a892010-11-20 18:38:55 -08001164 static const u8 irq_order[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 ISR_OUT_OF_RANGE,
1166 ISR_RxCOMPLETE,
1167 ISR_TxCOMPLETE,
1168 ISR_RxFRAMELOST,
1169 ISR_FATAL_ERROR,
1170 ISR_COMMAND_COMPLETE,
1171 ISR_IBSS_MERGE,
1172 ISR_GENERIC_IRQ
1173 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001175 if (priv->card && priv->present_callback &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176 !(*priv->present_callback)(priv->card))
1177 return IRQ_HANDLED;
1178
1179 /* In this state upper-level code assumes it can mess with
1180 the card unhampered by interrupts which may change register state.
1181 Note that even though the card shouldn't generate interrupts
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001182 the inturrupt line may be shared. This allows card setup
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183 to go on without disabling interrupts for a long time. */
1184 if (priv->station_state == STATION_STATE_DOWN)
1185 return IRQ_NONE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001186
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
1188
1189 while (1) {
1190 if (!atmel_lock_mac(priv)) {
1191 /* failed to contact card */
1192 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1193 return IRQ_HANDLED;
1194 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001195
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1197 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001198
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199 if (!isr) {
1200 atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
1201 return i == -1 ? IRQ_NONE : IRQ_HANDLED;
1202 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001203
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204 atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001205
Dmitry Torokhovb4341132006-10-08 00:14:29 -04001206 for (i = 0; i < ARRAY_SIZE(irq_order); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 if (isr & irq_order[i])
1208 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001209
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 if (!atmel_lock_mac(priv)) {
1211 /* failed to contact card */
1212 printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
1213 return IRQ_HANDLED;
1214 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001215
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
1217 isr ^= irq_order[i];
1218 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
1219 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001220
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221 switch (irq_order[i]) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001222
1223 case ISR_OUT_OF_RANGE:
1224 if (priv->operating_mode == IW_MODE_INFRA &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001225 priv->station_state == STATION_STATE_READY) {
1226 priv->station_is_associated = 0;
1227 atmel_scan(priv, 1);
1228 }
1229 break;
1230
1231 case ISR_RxFRAMELOST:
1232 priv->wstats.discard.misc++;
1233 /* fall through */
1234 case ISR_RxCOMPLETE:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001235 rx_done_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 case ISR_TxCOMPLETE:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001239 tx_done_irq(priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001241
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242 case ISR_FATAL_ERROR:
1243 printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
1244 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
1245 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001246
1247 case ISR_COMMAND_COMPLETE:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 atmel_command_irq(priv);
1249 break;
1250
1251 case ISR_IBSS_MERGE:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001252 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 priv->CurrentBSSID, 6);
1254 /* The WPA stuff cares about the current AP address */
1255 if (priv->use_wpa)
1256 build_wpa_mib(priv);
1257 break;
1258 case ISR_GENERIC_IRQ:
1259 printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
1260 break;
1261 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001262 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263}
1264
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001265static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266{
1267 struct atmel_private *priv = netdev_priv(dev);
1268
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001269 /* update the link quality here in case we are seeing no beacons
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 at all to drive the process */
1271 atmel_smooth_qual(priv);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001272
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 priv->wstats.status = priv->station_state;
1274
1275 if (priv->operating_mode == IW_MODE_INFRA) {
1276 if (priv->station_state != STATION_STATE_READY) {
1277 priv->wstats.qual.qual = 0;
1278 priv->wstats.qual.level = 0;
1279 priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
1280 | IW_QUAL_LEVEL_INVALID);
1281 }
1282 priv->wstats.qual.noise = 0;
1283 priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1284 } else {
1285 /* Quality levels cannot be determined in ad-hoc mode,
1286 because we can 'hear' more that one remote station. */
1287 priv->wstats.qual.qual = 0;
1288 priv->wstats.qual.level = 0;
1289 priv->wstats.qual.noise = 0;
1290 priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
1291 | IW_QUAL_LEVEL_INVALID
1292 | IW_QUAL_NOISE_INVALID;
1293 priv->wstats.miss.beacon = 0;
1294 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001295
1296 return &priv->wstats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297}
1298
1299static int atmel_change_mtu(struct net_device *dev, int new_mtu)
1300{
John Daiker8830cb62009-03-08 22:18:35 -07001301 if ((new_mtu < 68) || (new_mtu > 2312))
1302 return -EINVAL;
1303 dev->mtu = new_mtu;
1304 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001305}
1306
1307static int atmel_set_mac_address(struct net_device *dev, void *p)
1308{
1309 struct sockaddr *addr = p;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001310
John Daiker8830cb62009-03-08 22:18:35 -07001311 memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312 return atmel_open(dev);
1313}
1314
1315EXPORT_SYMBOL(atmel_open);
1316
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001317int atmel_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318{
1319 struct atmel_private *priv = netdev_priv(dev);
Dan Williams3c34a5d2008-08-18 15:40:02 -04001320 int i, channel, err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321
1322 /* any scheduled timer is no longer needed and might screw things up.. */
1323 del_timer_sync(&priv->management_timer);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001324
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 /* Interrupts will not touch the card once in this state... */
1326 priv->station_state = STATION_STATE_DOWN;
1327
1328 if (priv->new_SSID_size) {
1329 memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
1330 priv->SSID_size = priv->new_SSID_size;
1331 priv->new_SSID_size = 0;
1332 }
1333 priv->BSS_list_entries = 0;
1334
1335 priv->AuthenticationRequestRetryCnt = 0;
1336 priv->AssociationRequestRetryCnt = 0;
1337 priv->ReAssociationRequestRetryCnt = 0;
1338 priv->CurrentAuthentTransactionSeqNum = 0x0001;
1339 priv->ExpectedAuthentTransactionSeqNum = 0x0002;
1340
1341 priv->site_survey_state = SITE_SURVEY_IDLE;
1342 priv->station_is_associated = 0;
1343
Dan Williams3c34a5d2008-08-18 15:40:02 -04001344 err = reset_atmel_card(dev);
1345 if (err)
1346 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347
1348 if (priv->config_reg_domain) {
1349 priv->reg_domain = priv->config_reg_domain;
1350 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
1351 } else {
1352 priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
Dmitry Torokhovb4341132006-10-08 00:14:29 -04001353 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354 if (priv->reg_domain == channel_table[i].reg_domain)
1355 break;
Dmitry Torokhovb4341132006-10-08 00:14:29 -04001356 if (i == ARRAY_SIZE(channel_table)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 priv->reg_domain = REG_DOMAIN_MKK1;
1358 printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001359 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001361
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 if ((channel = atmel_validate_channel(priv, priv->channel)))
1363 priv->channel = channel;
1364
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001365 /* this moves station_state on.... */
1366 atmel_scan(priv, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367
1368 atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
1369 return 0;
1370}
1371
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001372static int atmel_close(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373{
1374 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001375
Dan Williams9a6301c2006-01-10 00:56:11 -05001376 /* Send event to userspace that we are disassociating */
1377 if (priv->station_state == STATION_STATE_READY) {
1378 union iwreq_data wrqu;
1379
1380 wrqu.data.length = 0;
1381 wrqu.data.flags = 0;
1382 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1383 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
1384 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1385 }
1386
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 atmel_enter_state(priv, STATION_STATE_DOWN);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001388
1389 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 atmel_write16(dev, GCR, 0x0060);
1391 atmel_write16(dev, GCR, 0x0040);
1392 return 0;
1393}
1394
1395static int atmel_validate_channel(struct atmel_private *priv, int channel)
1396{
1397 /* check that channel is OK, if so return zero,
1398 else return suitable default channel */
1399 int i;
1400
Dmitry Torokhovb4341132006-10-08 00:14:29 -04001401 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 if (priv->reg_domain == channel_table[i].reg_domain) {
1403 if (channel >= channel_table[i].min &&
1404 channel <= channel_table[i].max)
1405 return 0;
1406 else
1407 return channel_table[i].min;
1408 }
1409 return 0;
1410}
1411
1412static int atmel_proc_output (char *buf, struct atmel_private *priv)
1413{
1414 int i;
1415 char *p = buf;
1416 char *s, *r, *c;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001417
1418 p += sprintf(p, "Driver version:\t\t%d.%d\n",
1419 DRIVER_MAJOR, DRIVER_MINOR);
1420
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 if (priv->station_state != STATION_STATE_DOWN) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001422 p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
1423 "Firmware location:\t",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424 priv->host_info.major_version,
1425 priv->host_info.minor_version,
1426 priv->host_info.build_version);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001427
1428 if (priv->card_type != CARD_TYPE_EEPROM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 p += sprintf(p, "on card\n");
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001430 else if (priv->firmware)
1431 p += sprintf(p, "%s loaded by host\n",
1432 priv->firmware_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001434 p += sprintf(p, "%s loaded by hotplug\n",
1435 priv->firmware_id);
1436
1437 switch (priv->card_type) {
John Daiker8830cb62009-03-08 22:18:35 -07001438 case CARD_TYPE_PARALLEL_FLASH:
1439 c = "Parallel flash";
1440 break;
1441 case CARD_TYPE_SPI_FLASH:
1442 c = "SPI flash\n";
1443 break;
1444 case CARD_TYPE_EEPROM:
1445 c = "EEPROM";
1446 break;
1447 default:
1448 c = "<unknown>";
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 }
1450
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 r = "<unknown>";
Dmitry Torokhovb4341132006-10-08 00:14:29 -04001452 for (i = 0; i < ARRAY_SIZE(channel_table); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453 if (priv->reg_domain == channel_table[i].reg_domain)
1454 r = channel_table[i].name;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001455
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456 p += sprintf(p, "MAC memory type:\t%s\n", c);
1457 p += sprintf(p, "Regulatory domain:\t%s\n", r);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001458 p += sprintf(p, "Host CRC checking:\t%s\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 priv->do_rx_crc ? "On" : "Off");
1460 p += sprintf(p, "WPA-capable firmware:\t%s\n",
1461 priv->use_wpa ? "Yes" : "No");
1462 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001463
John Daiker8830cb62009-03-08 22:18:35 -07001464 switch (priv->station_state) {
1465 case STATION_STATE_SCANNING:
1466 s = "Scanning";
1467 break;
1468 case STATION_STATE_JOINNING:
1469 s = "Joining";
1470 break;
1471 case STATION_STATE_AUTHENTICATING:
1472 s = "Authenticating";
1473 break;
1474 case STATION_STATE_ASSOCIATING:
1475 s = "Associating";
1476 break;
1477 case STATION_STATE_READY:
1478 s = "Ready";
1479 break;
1480 case STATION_STATE_REASSOCIATING:
1481 s = "Reassociating";
1482 break;
1483 case STATION_STATE_MGMT_ERROR:
1484 s = "Management error";
1485 break;
1486 case STATION_STATE_DOWN:
1487 s = "Down";
1488 break;
1489 default:
1490 s = "<unknown>";
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001492
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 p += sprintf(p, "Current state:\t\t%s\n", s);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001494 return p - buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495}
1496
1497static int atmel_read_proc(char *page, char **start, off_t off,
1498 int count, int *eof, void *data)
1499{
John Daiker8830cb62009-03-08 22:18:35 -07001500 struct atmel_private *priv = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 int len = atmel_proc_output (page, priv);
John Daiker8830cb62009-03-08 22:18:35 -07001502 if (len <= off+count)
1503 *eof = 1;
1504 *start = page + off;
1505 len -= off;
1506 if (len > count)
1507 len = count;
1508 if (len < 0)
1509 len = 0;
1510 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511}
1512
Stephen Hemminger824f1df2009-03-20 19:36:27 +00001513static const struct net_device_ops atmel_netdev_ops = {
1514 .ndo_open = atmel_open,
1515 .ndo_stop = atmel_close,
1516 .ndo_change_mtu = atmel_change_mtu,
1517 .ndo_set_mac_address = atmel_set_mac_address,
1518 .ndo_start_xmit = start_tx,
1519 .ndo_do_ioctl = atmel_ioctl,
Stephen Hemminger824f1df2009-03-20 19:36:27 +00001520 .ndo_validate_addr = eth_validate_addr,
1521};
1522
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001523struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
1524 const AtmelFWType fw_type,
1525 struct device *sys_dev,
1526 int (*card_present)(void *), void *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527{
Christophe Lucas5bc4c362005-11-12 21:58:53 +03001528 struct proc_dir_entry *ent;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 struct net_device *dev;
1530 struct atmel_private *priv;
1531 int rc;
1532
1533 /* Create the network device object. */
John Daiker8830cb62009-03-08 22:18:35 -07001534 dev = alloc_etherdev(sizeof(*priv));
1535 if (!dev) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001536 printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537 return NULL;
John Daiker8830cb62009-03-08 22:18:35 -07001538 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 if (dev_alloc_name(dev, dev->name) < 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001540 printk(KERN_ERR "atmel: Couldn't get name!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541 goto err_out_free;
1542 }
1543
1544 priv = netdev_priv(dev);
1545 priv->dev = dev;
1546 priv->sys_dev = sys_dev;
1547 priv->present_callback = card_present;
1548 priv->card = card;
1549 priv->firmware = NULL;
1550 priv->firmware_id[0] = '\0';
1551 priv->firmware_type = fw_type;
1552 if (firmware) /* module parameter */
1553 strcpy(priv->firmware_id, firmware);
1554 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1555 priv->station_state = STATION_STATE_DOWN;
1556 priv->do_rx_crc = 0;
1557 /* For PCMCIA cards, some chips need CRC, some don't
1558 so we have to probe. */
1559 if (priv->bus_type == BUS_TYPE_PCCARD) {
1560 priv->probe_crc = 1;
1561 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1562 } else
1563 priv->probe_crc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564 priv->last_qual = jiffies;
1565 priv->last_beacon_timestamp = 0;
1566 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1567 memset(priv->BSSID, 0, 6);
1568 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1569 priv->station_was_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001570
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571 priv->last_survey = jiffies;
1572 priv->preamble = LONG_PREAMBLE;
1573 priv->operating_mode = IW_MODE_INFRA;
1574 priv->connect_to_any_BSS = 0;
1575 priv->config_reg_domain = 0;
1576 priv->reg_domain = 0;
1577 priv->tx_rate = 3;
1578 priv->auto_tx_rate = 1;
1579 priv->channel = 4;
1580 priv->power_mode = 0;
1581 priv->SSID[0] = '\0';
1582 priv->SSID_size = 0;
1583 priv->new_SSID_size = 0;
1584 priv->frag_threshold = 2346;
1585 priv->rts_threshold = 2347;
1586 priv->short_retry = 7;
1587 priv->long_retry = 4;
1588
1589 priv->wep_is_on = 0;
1590 priv->default_key = 0;
1591 priv->encryption_level = 0;
1592 priv->exclude_unencrypted = 0;
1593 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1594 priv->use_wpa = 0;
1595 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1596 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1597
1598 priv->default_beacon_period = priv->beacon_period = 100;
1599 priv->listen_interval = 1;
1600
1601 init_timer(&priv->management_timer);
1602 spin_lock_init(&priv->irqlock);
1603 spin_lock_init(&priv->timerlock);
1604 priv->management_timer.function = atmel_management_timer;
1605 priv->management_timer.data = (unsigned long) dev;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001606
Stephen Hemminger824f1df2009-03-20 19:36:27 +00001607 dev->netdev_ops = &atmel_netdev_ops;
1608 dev->wireless_handlers = &atmel_handler_def;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 dev->irq = irq;
1610 dev->base_addr = port;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001611
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612 SET_NETDEV_DEV(dev, sys_dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001613
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001614 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001615 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 goto err_out_free;
1617 }
1618
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001619 if (!request_region(dev->base_addr, 32,
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001620 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621 goto err_out_irq;
1622 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001623
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624 if (register_netdev(dev))
1625 goto err_out_res;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001626
John Daiker8830cb62009-03-08 22:18:35 -07001627 if (!probe_atmel_card(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628 unregister_netdev(dev);
1629 goto err_out_res;
1630 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001631
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632 netif_carrier_off(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001633
Christophe Lucas5bc4c362005-11-12 21:58:53 +03001634 ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1635 if (!ent)
1636 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001637
Johannes Berge1749612008-10-27 15:59:26 -07001638 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1639 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001640
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641 return dev;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001642
1643err_out_res:
John Daiker8830cb62009-03-08 22:18:35 -07001644 release_region(dev->base_addr, 32);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001645err_out_irq:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001646 free_irq(dev->irq, dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001647err_out_free:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001648 free_netdev(dev);
1649 return NULL;
1650}
1651
1652EXPORT_SYMBOL(init_atmel_card);
1653
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001654void stop_atmel_card(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655{
1656 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001657
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 /* put a brick on it... */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001659 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660 atmel_write16(dev, GCR, 0x0060);
1661 atmel_write16(dev, GCR, 0x0040);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001662
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663 del_timer_sync(&priv->management_timer);
1664 unregister_netdev(dev);
1665 remove_proc_entry("driver/atmel", NULL);
1666 free_irq(dev->irq, dev);
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001667 kfree(priv->firmware);
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001668 release_region(dev->base_addr, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669 free_netdev(dev);
1670}
1671
1672EXPORT_SYMBOL(stop_atmel_card);
1673
1674static int atmel_set_essid(struct net_device *dev,
1675 struct iw_request_info *info,
1676 struct iw_point *dwrq,
1677 char *extra)
1678{
1679 struct atmel_private *priv = netdev_priv(dev);
1680
1681 /* Check if we asked for `any' */
John Daiker8830cb62009-03-08 22:18:35 -07001682 if (dwrq->flags == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 priv->connect_to_any_BSS = 1;
1684 } else {
1685 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1686
1687 priv->connect_to_any_BSS = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001688
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689 /* Check the size of the string */
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07001690 if (dwrq->length > MAX_SSID_LENGTH)
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001691 return -E2BIG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001692 if (index != 0)
1693 return -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001694
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07001695 memcpy(priv->new_SSID, extra, dwrq->length);
1696 priv->new_SSID_size = dwrq->length;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 }
1698
1699 return -EINPROGRESS;
1700}
1701
1702static int atmel_get_essid(struct net_device *dev,
1703 struct iw_request_info *info,
1704 struct iw_point *dwrq,
1705 char *extra)
1706{
1707 struct atmel_private *priv = netdev_priv(dev);
1708
1709 /* Get the current SSID */
1710 if (priv->new_SSID_size != 0) {
1711 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
Dan Williamsd6a13a22006-01-12 15:00:58 -05001712 dwrq->length = priv->new_SSID_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713 } else {
1714 memcpy(extra, priv->SSID, priv->SSID_size);
Dan Williamsd6a13a22006-01-12 15:00:58 -05001715 dwrq->length = priv->SSID_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001717
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1719
1720 return 0;
1721}
1722
1723static int atmel_get_wap(struct net_device *dev,
1724 struct iw_request_info *info,
1725 struct sockaddr *awrq,
1726 char *extra)
1727{
1728 struct atmel_private *priv = netdev_priv(dev);
1729 memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1730 awrq->sa_family = ARPHRD_ETHER;
1731
1732 return 0;
1733}
1734
1735static int atmel_set_encode(struct net_device *dev,
1736 struct iw_request_info *info,
1737 struct iw_point *dwrq,
1738 char *extra)
1739{
1740 struct atmel_private *priv = netdev_priv(dev);
1741
1742 /* Basic checking: do we have a key to set ?
1743 * Note : with the new API, it's impossible to get a NULL pointer.
1744 * Therefore, we need to check a key size == 0 instead.
1745 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1746 * when no key is present (only change flags), but older versions
1747 * don't do it. - Jean II */
1748 if (dwrq->length > 0) {
1749 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1750 int current_index = priv->default_key;
1751 /* Check the size of the key */
1752 if (dwrq->length > 13) {
1753 return -EINVAL;
1754 }
1755 /* Check the index (none -> use current) */
1756 if (index < 0 || index >= 4)
1757 index = current_index;
1758 else
1759 priv->default_key = index;
1760 /* Set the length */
1761 if (dwrq->length > 5)
1762 priv->wep_key_len[index] = 13;
1763 else
1764 if (dwrq->length > 0)
1765 priv->wep_key_len[index] = 5;
1766 else
1767 /* Disable the key */
1768 priv->wep_key_len[index] = 0;
1769 /* Check if the key is not marked as invalid */
Dmitry Torokhov5c877fe2006-10-08 00:14:30 -04001770 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771 /* Cleanup */
1772 memset(priv->wep_keys[index], 0, 13);
1773 /* Copy the key in the driver */
1774 memcpy(priv->wep_keys[index], extra, dwrq->length);
1775 }
1776 /* WE specify that if a valid key is set, encryption
1777 * should be enabled (user may turn it off later)
1778 * This is also how "iwconfig ethX key on" works */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001779 if (index == current_index &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780 priv->wep_key_len[index] > 0) {
1781 priv->wep_is_on = 1;
1782 priv->exclude_unencrypted = 1;
1783 if (priv->wep_key_len[index] > 5) {
Dan Williams9a6301c2006-01-10 00:56:11 -05001784 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 priv->encryption_level = 2;
1786 } else {
Dan Williams9a6301c2006-01-10 00:56:11 -05001787 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 priv->encryption_level = 1;
1789 }
1790 }
1791 } else {
1792 /* Do we want to just set the transmit key index ? */
1793 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001794 if (index >= 0 && index < 4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 priv->default_key = index;
1796 } else
1797 /* Don't complain if only change the mode */
Jeff Garzik93a3b602007-11-23 21:50:20 -05001798 if (!(dwrq->flags & IW_ENCODE_MODE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 }
1801 /* Read the flags */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001802 if (dwrq->flags & IW_ENCODE_DISABLED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 priv->wep_is_on = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001804 priv->encryption_level = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1806 } else {
1807 priv->wep_is_on = 1;
1808 if (priv->wep_key_len[priv->default_key] > 5) {
1809 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1810 priv->encryption_level = 2;
1811 } else {
1812 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1813 priv->encryption_level = 1;
1814 }
1815 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001816 if (dwrq->flags & IW_ENCODE_RESTRICTED)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817 priv->exclude_unencrypted = 1;
John Daiker8830cb62009-03-08 22:18:35 -07001818 if (dwrq->flags & IW_ENCODE_OPEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819 priv->exclude_unencrypted = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001820
Linus Torvalds1da177e2005-04-16 15:20:36 -07001821 return -EINPROGRESS; /* Call commit handler */
1822}
1823
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824static int atmel_get_encode(struct net_device *dev,
1825 struct iw_request_info *info,
1826 struct iw_point *dwrq,
1827 char *extra)
1828{
1829 struct atmel_private *priv = netdev_priv(dev);
1830 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001831
Linus Torvalds1da177e2005-04-16 15:20:36 -07001832 if (!priv->wep_is_on)
1833 dwrq->flags = IW_ENCODE_DISABLED;
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001834 else {
1835 if (priv->exclude_unencrypted)
1836 dwrq->flags = IW_ENCODE_RESTRICTED;
1837 else
1838 dwrq->flags = IW_ENCODE_OPEN;
1839 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840 /* Which key do we want ? -1 -> tx index */
1841 if (index < 0 || index >= 4)
1842 index = priv->default_key;
1843 dwrq->flags |= index + 1;
1844 /* Copy the key to the user buffer */
1845 dwrq->length = priv->wep_key_len[index];
1846 if (dwrq->length > 16) {
John Daiker8830cb62009-03-08 22:18:35 -07001847 dwrq->length = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848 } else {
1849 memset(extra, 0, 16);
1850 memcpy(extra, priv->wep_keys[index], dwrq->length);
1851 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001852
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853 return 0;
1854}
1855
Dan Williams9a6301c2006-01-10 00:56:11 -05001856static int atmel_set_encodeext(struct net_device *dev,
1857 struct iw_request_info *info,
1858 union iwreq_data *wrqu,
1859 char *extra)
1860{
1861 struct atmel_private *priv = netdev_priv(dev);
1862 struct iw_point *encoding = &wrqu->encoding;
1863 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
Dan Williams0d467502006-02-05 17:52:21 -05001864 int idx, key_len, alg = ext->alg, set_key = 1;
Dan Williams9a6301c2006-01-10 00:56:11 -05001865
1866 /* Determine and validate the key index */
1867 idx = encoding->flags & IW_ENCODE_INDEX;
1868 if (idx) {
Johannes Berg2c7060022008-10-30 22:09:54 +01001869 if (idx < 1 || idx > 4)
Dan Williams9a6301c2006-01-10 00:56:11 -05001870 return -EINVAL;
1871 idx--;
1872 } else
1873 idx = priv->default_key;
1874
Dan Williams0d467502006-02-05 17:52:21 -05001875 if (encoding->flags & IW_ENCODE_DISABLED)
1876 alg = IW_ENCODE_ALG_NONE;
1877
1878 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1879 priv->default_key = idx;
1880 set_key = ext->key_len > 0 ? 1 : 0;
Dan Williams9a6301c2006-01-10 00:56:11 -05001881 }
1882
Dan Williams0d467502006-02-05 17:52:21 -05001883 if (set_key) {
1884 /* Set the requested key first */
1885 switch (alg) {
1886 case IW_ENCODE_ALG_NONE:
1887 priv->wep_is_on = 0;
1888 priv->encryption_level = 0;
1889 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1890 break;
1891 case IW_ENCODE_ALG_WEP:
1892 if (ext->key_len > 5) {
1893 priv->wep_key_len[idx] = 13;
1894 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1895 priv->encryption_level = 2;
1896 } else if (ext->key_len > 0) {
1897 priv->wep_key_len[idx] = 5;
1898 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1899 priv->encryption_level = 1;
1900 } else {
1901 return -EINVAL;
1902 }
1903 priv->wep_is_on = 1;
1904 memset(priv->wep_keys[idx], 0, 13);
1905 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1906 memcpy(priv->wep_keys[idx], ext->key, key_len);
1907 break;
1908 default:
Dan Williams9a6301c2006-01-10 00:56:11 -05001909 return -EINVAL;
1910 }
Dan Williams9a6301c2006-01-10 00:56:11 -05001911 }
1912
1913 return -EINPROGRESS;
1914}
1915
1916static int atmel_get_encodeext(struct net_device *dev,
1917 struct iw_request_info *info,
1918 union iwreq_data *wrqu,
1919 char *extra)
1920{
1921 struct atmel_private *priv = netdev_priv(dev);
1922 struct iw_point *encoding = &wrqu->encoding;
1923 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1924 int idx, max_key_len;
1925
1926 max_key_len = encoding->length - sizeof(*ext);
1927 if (max_key_len < 0)
1928 return -EINVAL;
1929
1930 idx = encoding->flags & IW_ENCODE_INDEX;
1931 if (idx) {
Johannes Berg2c7060022008-10-30 22:09:54 +01001932 if (idx < 1 || idx > 4)
Dan Williams9a6301c2006-01-10 00:56:11 -05001933 return -EINVAL;
1934 idx--;
1935 } else
1936 idx = priv->default_key;
1937
1938 encoding->flags = idx + 1;
1939 memset(ext, 0, sizeof(*ext));
Dmitry Torokhov5c877fe2006-10-08 00:14:30 -04001940
Dan Williams9a6301c2006-01-10 00:56:11 -05001941 if (!priv->wep_is_on) {
1942 ext->alg = IW_ENCODE_ALG_NONE;
1943 ext->key_len = 0;
1944 encoding->flags |= IW_ENCODE_DISABLED;
1945 } else {
1946 if (priv->encryption_level > 0)
1947 ext->alg = IW_ENCODE_ALG_WEP;
1948 else
1949 return -EINVAL;
1950
1951 ext->key_len = priv->wep_key_len[idx];
1952 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1953 encoding->flags |= IW_ENCODE_ENABLED;
1954 }
1955
1956 return 0;
1957}
1958
1959static int atmel_set_auth(struct net_device *dev,
1960 struct iw_request_info *info,
1961 union iwreq_data *wrqu, char *extra)
1962{
1963 struct atmel_private *priv = netdev_priv(dev);
1964 struct iw_param *param = &wrqu->param;
1965
1966 switch (param->flags & IW_AUTH_INDEX) {
1967 case IW_AUTH_WPA_VERSION:
1968 case IW_AUTH_CIPHER_PAIRWISE:
1969 case IW_AUTH_CIPHER_GROUP:
1970 case IW_AUTH_KEY_MGMT:
1971 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1972 case IW_AUTH_PRIVACY_INVOKED:
1973 /*
1974 * atmel does not use these parameters
1975 */
1976 break;
1977
1978 case IW_AUTH_DROP_UNENCRYPTED:
1979 priv->exclude_unencrypted = param->value ? 1 : 0;
1980 break;
1981
1982 case IW_AUTH_80211_AUTH_ALG: {
1983 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1984 priv->exclude_unencrypted = 1;
1985 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1986 priv->exclude_unencrypted = 0;
1987 } else
1988 return -EINVAL;
1989 break;
1990 }
1991
1992 case IW_AUTH_WPA_ENABLED:
1993 /* Silently accept disable of WPA */
1994 if (param->value > 0)
1995 return -EOPNOTSUPP;
1996 break;
1997
1998 default:
1999 return -EOPNOTSUPP;
2000 }
2001 return -EINPROGRESS;
2002}
2003
2004static int atmel_get_auth(struct net_device *dev,
2005 struct iw_request_info *info,
2006 union iwreq_data *wrqu, char *extra)
2007{
2008 struct atmel_private *priv = netdev_priv(dev);
2009 struct iw_param *param = &wrqu->param;
2010
2011 switch (param->flags & IW_AUTH_INDEX) {
2012 case IW_AUTH_DROP_UNENCRYPTED:
2013 param->value = priv->exclude_unencrypted;
2014 break;
2015
2016 case IW_AUTH_80211_AUTH_ALG:
2017 if (priv->exclude_unencrypted == 1)
2018 param->value = IW_AUTH_ALG_SHARED_KEY;
2019 else
2020 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2021 break;
2022
2023 case IW_AUTH_WPA_ENABLED:
2024 param->value = 0;
2025 break;
2026
2027 default:
2028 return -EOPNOTSUPP;
2029 }
2030 return 0;
2031}
2032
2033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034static int atmel_get_name(struct net_device *dev,
2035 struct iw_request_info *info,
2036 char *cwrq,
2037 char *extra)
2038{
2039 strcpy(cwrq, "IEEE 802.11-DS");
2040 return 0;
2041}
2042
2043static int atmel_set_rate(struct net_device *dev,
2044 struct iw_request_info *info,
2045 struct iw_param *vwrq,
2046 char *extra)
2047{
2048 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002049
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050 if (vwrq->fixed == 0) {
2051 priv->tx_rate = 3;
2052 priv->auto_tx_rate = 1;
2053 } else {
2054 priv->auto_tx_rate = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002055
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056 /* Which type of value ? */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002057 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002058 /* Setting by rate index */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002059 priv->tx_rate = vwrq->value;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 } else {
2061 /* Setting by frequency value */
2062 switch (vwrq->value) {
John Daiker8830cb62009-03-08 22:18:35 -07002063 case 1000000:
2064 priv->tx_rate = 0;
2065 break;
2066 case 2000000:
2067 priv->tx_rate = 1;
2068 break;
2069 case 5500000:
2070 priv->tx_rate = 2;
2071 break;
2072 case 11000000:
2073 priv->tx_rate = 3;
2074 break;
2075 default:
2076 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 }
2078 }
2079 }
2080
2081 return -EINPROGRESS;
2082}
2083
2084static int atmel_set_mode(struct net_device *dev,
2085 struct iw_request_info *info,
2086 __u32 *uwrq,
2087 char *extra)
2088{
2089 struct atmel_private *priv = netdev_priv(dev);
2090
2091 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2092 return -EINVAL;
2093
2094 priv->operating_mode = *uwrq;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002095 return -EINPROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002096}
2097
2098static int atmel_get_mode(struct net_device *dev,
2099 struct iw_request_info *info,
2100 __u32 *uwrq,
2101 char *extra)
2102{
2103 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002104
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 *uwrq = priv->operating_mode;
2106 return 0;
2107}
2108
2109static int atmel_get_rate(struct net_device *dev,
2110 struct iw_request_info *info,
2111 struct iw_param *vwrq,
2112 char *extra)
2113{
2114 struct atmel_private *priv = netdev_priv(dev);
2115
2116 if (priv->auto_tx_rate) {
2117 vwrq->fixed = 0;
2118 vwrq->value = 11000000;
2119 } else {
2120 vwrq->fixed = 1;
John Daiker8830cb62009-03-08 22:18:35 -07002121 switch (priv->tx_rate) {
2122 case 0:
2123 vwrq->value = 1000000;
2124 break;
2125 case 1:
2126 vwrq->value = 2000000;
2127 break;
2128 case 2:
2129 vwrq->value = 5500000;
2130 break;
2131 case 3:
2132 vwrq->value = 11000000;
2133 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 }
2135 }
2136 return 0;
2137}
2138
2139static int atmel_set_power(struct net_device *dev,
2140 struct iw_request_info *info,
2141 struct iw_param *vwrq,
2142 char *extra)
2143{
2144 struct atmel_private *priv = netdev_priv(dev);
2145 priv->power_mode = vwrq->disabled ? 0 : 1;
2146 return -EINPROGRESS;
2147}
2148
2149static int atmel_get_power(struct net_device *dev,
2150 struct iw_request_info *info,
2151 struct iw_param *vwrq,
2152 char *extra)
2153{
2154 struct atmel_private *priv = netdev_priv(dev);
2155 vwrq->disabled = priv->power_mode ? 0 : 1;
2156 vwrq->flags = IW_POWER_ON;
2157 return 0;
2158}
2159
2160static int atmel_set_retry(struct net_device *dev,
2161 struct iw_request_info *info,
2162 struct iw_param *vwrq,
2163 char *extra)
2164{
2165 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002166
2167 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002168 if (vwrq->flags & IW_RETRY_LONG)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169 priv->long_retry = vwrq->value;
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002170 else if (vwrq->flags & IW_RETRY_SHORT)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171 priv->short_retry = vwrq->value;
2172 else {
2173 /* No modifier : set both */
2174 priv->long_retry = vwrq->value;
2175 priv->short_retry = vwrq->value;
2176 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002177 return -EINPROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002178 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002179
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 return -EINVAL;
2181}
2182
2183static int atmel_get_retry(struct net_device *dev,
2184 struct iw_request_info *info,
2185 struct iw_param *vwrq,
2186 char *extra)
2187{
2188 struct atmel_private *priv = netdev_priv(dev);
2189
2190 vwrq->disabled = 0; /* Can't be disabled */
2191
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002192 /* Note : by default, display the short retry number */
2193 if (vwrq->flags & IW_RETRY_LONG) {
2194 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195 vwrq->value = priv->long_retry;
2196 } else {
2197 vwrq->flags = IW_RETRY_LIMIT;
2198 vwrq->value = priv->short_retry;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002199 if (priv->long_retry != priv->short_retry)
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002200 vwrq->flags |= IW_RETRY_SHORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002201 }
2202
2203 return 0;
2204}
2205
2206static int atmel_set_rts(struct net_device *dev,
2207 struct iw_request_info *info,
2208 struct iw_param *vwrq,
2209 char *extra)
2210{
2211 struct atmel_private *priv = netdev_priv(dev);
2212 int rthr = vwrq->value;
2213
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002214 if (vwrq->disabled)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002215 rthr = 2347;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002216 if ((rthr < 0) || (rthr > 2347)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217 return -EINVAL;
2218 }
2219 priv->rts_threshold = rthr;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002220
Linus Torvalds1da177e2005-04-16 15:20:36 -07002221 return -EINPROGRESS; /* Call commit handler */
2222}
2223
2224static int atmel_get_rts(struct net_device *dev,
2225 struct iw_request_info *info,
2226 struct iw_param *vwrq,
2227 char *extra)
2228{
2229 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002230
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231 vwrq->value = priv->rts_threshold;
2232 vwrq->disabled = (vwrq->value >= 2347);
2233 vwrq->fixed = 1;
2234
2235 return 0;
2236}
2237
2238static int atmel_set_frag(struct net_device *dev,
2239 struct iw_request_info *info,
2240 struct iw_param *vwrq,
2241 char *extra)
2242{
2243 struct atmel_private *priv = netdev_priv(dev);
2244 int fthr = vwrq->value;
2245
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002246 if (vwrq->disabled)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002247 fthr = 2346;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002248 if ((fthr < 256) || (fthr > 2346)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002249 return -EINVAL;
2250 }
2251 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2252 priv->frag_threshold = fthr;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002253
Linus Torvalds1da177e2005-04-16 15:20:36 -07002254 return -EINPROGRESS; /* Call commit handler */
2255}
2256
2257static int atmel_get_frag(struct net_device *dev,
2258 struct iw_request_info *info,
2259 struct iw_param *vwrq,
2260 char *extra)
2261{
2262 struct atmel_private *priv = netdev_priv(dev);
2263
2264 vwrq->value = priv->frag_threshold;
2265 vwrq->disabled = (vwrq->value >= 2346);
2266 vwrq->fixed = 1;
2267
2268 return 0;
2269}
2270
Linus Torvalds1da177e2005-04-16 15:20:36 -07002271static int atmel_set_freq(struct net_device *dev,
2272 struct iw_request_info *info,
2273 struct iw_freq *fwrq,
2274 char *extra)
2275{
2276 struct atmel_private *priv = netdev_priv(dev);
2277 int rc = -EINPROGRESS; /* Call commit handler */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002278
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279 /* If setting by frequency, convert to a channel */
David Kilroy9ee677c2008-12-23 14:03:38 +00002280 if (fwrq->e == 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281 int f = fwrq->m / 100000;
David Kilroy9ee677c2008-12-23 14:03:38 +00002282
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283 /* Hack to fall through... */
2284 fwrq->e = 0;
David Kilroy9ee677c2008-12-23 14:03:38 +00002285 fwrq->m = ieee80211_freq_to_dsss_chan(f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286 }
2287 /* Setting by channel number */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002288 if ((fwrq->m > 1000) || (fwrq->e > 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002289 rc = -EOPNOTSUPP;
2290 else {
2291 int channel = fwrq->m;
2292 if (atmel_validate_channel(priv, channel) == 0) {
2293 priv->channel = channel;
2294 } else {
2295 rc = -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002296 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002297 }
2298 return rc;
2299}
2300
2301static int atmel_get_freq(struct net_device *dev,
2302 struct iw_request_info *info,
2303 struct iw_freq *fwrq,
2304 char *extra)
2305{
2306 struct atmel_private *priv = netdev_priv(dev);
2307
2308 fwrq->m = priv->channel;
2309 fwrq->e = 0;
2310 return 0;
2311}
2312
2313static int atmel_set_scan(struct net_device *dev,
2314 struct iw_request_info *info,
David Kilroy9930cce2008-09-13 12:22:05 +01002315 struct iw_point *dwrq,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316 char *extra)
2317{
2318 struct atmel_private *priv = netdev_priv(dev);
2319 unsigned long flags;
2320
2321 /* Note : you may have realised that, as this is a SET operation,
2322 * this is privileged and therefore a normal user can't
2323 * perform scanning.
2324 * This is not an error, while the device perform scanning,
2325 * traffic doesn't flow, so it's a perfect DoS...
2326 * Jean II */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002327
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328 if (priv->station_state == STATION_STATE_DOWN)
2329 return -EAGAIN;
2330
2331 /* Timeout old surveys. */
S.Çağlar Onur6e33e302008-02-14 17:36:49 +02002332 if (time_after(jiffies, priv->last_survey + 20 * HZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333 priv->site_survey_state = SITE_SURVEY_IDLE;
2334 priv->last_survey = jiffies;
2335
2336 /* Initiate a scan command */
2337 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2338 return -EBUSY;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002339
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340 del_timer_sync(&priv->management_timer);
2341 spin_lock_irqsave(&priv->irqlock, flags);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002342
Linus Torvalds1da177e2005-04-16 15:20:36 -07002343 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2344 priv->fast_scan = 0;
2345 atmel_scan(priv, 0);
2346 spin_unlock_irqrestore(&priv->irqlock, flags);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002347
Linus Torvalds1da177e2005-04-16 15:20:36 -07002348 return 0;
2349}
2350
2351static int atmel_get_scan(struct net_device *dev,
2352 struct iw_request_info *info,
2353 struct iw_point *dwrq,
2354 char *extra)
2355{
2356 struct atmel_private *priv = netdev_priv(dev);
2357 int i;
2358 char *current_ev = extra;
2359 struct iw_event iwe;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002360
Linus Torvalds1da177e2005-04-16 15:20:36 -07002361 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2362 return -EAGAIN;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002363
2364 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002365 iwe.cmd = SIOCGIWAP;
2366 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2367 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
David S. Millerccc58052008-06-16 18:50:49 -07002368 current_ev = iwe_stream_add_event(info, current_ev,
2369 extra + IW_SCAN_MAX_DATA,
2370 &iwe, IW_EV_ADDR_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002371
2372 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2373 if (iwe.u.data.length > 32)
2374 iwe.u.data.length = 32;
2375 iwe.cmd = SIOCGIWESSID;
2376 iwe.u.data.flags = 1;
David S. Millerccc58052008-06-16 18:50:49 -07002377 current_ev = iwe_stream_add_point(info, current_ev,
2378 extra + IW_SCAN_MAX_DATA,
2379 &iwe, priv->BSSinfo[i].SSID);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002380
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381 iwe.cmd = SIOCGIWMODE;
2382 iwe.u.mode = priv->BSSinfo[i].BSStype;
David S. Millerccc58052008-06-16 18:50:49 -07002383 current_ev = iwe_stream_add_event(info, current_ev,
2384 extra + IW_SCAN_MAX_DATA,
2385 &iwe, IW_EV_UINT_LEN);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002386
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387 iwe.cmd = SIOCGIWFREQ;
2388 iwe.u.freq.m = priv->BSSinfo[i].channel;
2389 iwe.u.freq.e = 0;
David S. Millerccc58052008-06-16 18:50:49 -07002390 current_ev = iwe_stream_add_event(info, current_ev,
2391 extra + IW_SCAN_MAX_DATA,
2392 &iwe, IW_EV_FREQ_LEN);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002393
Holden Karau3b31dc32006-10-10 14:45:33 -07002394 /* Add quality statistics */
2395 iwe.cmd = IWEVQUAL;
2396 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2397 iwe.u.qual.qual = iwe.u.qual.level;
2398 /* iwe.u.qual.noise = SOMETHING */
David S. Millerccc58052008-06-16 18:50:49 -07002399 current_ev = iwe_stream_add_event(info, current_ev,
2400 extra + IW_SCAN_MAX_DATA,
2401 &iwe, IW_EV_QUAL_LEN);
Holden Karau3b31dc32006-10-10 14:45:33 -07002402
2403
Linus Torvalds1da177e2005-04-16 15:20:36 -07002404 iwe.cmd = SIOCGIWENCODE;
2405 if (priv->BSSinfo[i].UsingWEP)
2406 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2407 else
2408 iwe.u.data.flags = IW_ENCODE_DISABLED;
2409 iwe.u.data.length = 0;
David S. Millerccc58052008-06-16 18:50:49 -07002410 current_ev = iwe_stream_add_point(info, current_ev,
2411 extra + IW_SCAN_MAX_DATA,
2412 &iwe, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413 }
2414
2415 /* Length of data */
2416 dwrq->length = (current_ev - extra);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002417 dwrq->flags = 0;
2418
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419 return 0;
2420}
2421
2422static int atmel_get_range(struct net_device *dev,
2423 struct iw_request_info *info,
2424 struct iw_point *dwrq,
2425 char *extra)
2426{
2427 struct atmel_private *priv = netdev_priv(dev);
2428 struct iw_range *range = (struct iw_range *) extra;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002429 int k, i, j;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002430
2431 dwrq->length = sizeof(struct iw_range);
Alexey Dobriyanf36be622005-11-08 00:41:48 +03002432 memset(range, 0, sizeof(struct iw_range));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002433 range->min_nwid = 0x0000;
2434 range->max_nwid = 0x0000;
2435 range->num_channels = 0;
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002436 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002437 if (priv->reg_domain == channel_table[j].reg_domain) {
2438 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2439 break;
2440 }
2441 if (range->num_channels != 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002442 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443 range->freq[k].i = i; /* List index */
David Kilroy9ee677c2008-12-23 14:03:38 +00002444
2445 /* Values in MHz -> * 10^5 * 10 */
2446 range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2447 100000);
2448 range->freq[k++].e = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449 }
2450 range->num_frequency = k;
2451 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002452
Linus Torvalds1da177e2005-04-16 15:20:36 -07002453 range->max_qual.qual = 100;
2454 range->max_qual.level = 100;
2455 range->max_qual.noise = 0;
2456 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2457
2458 range->avg_qual.qual = 50;
2459 range->avg_qual.level = 50;
2460 range->avg_qual.noise = 0;
2461 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2462
2463 range->sensitivity = 0;
2464
2465 range->bitrate[0] = 1000000;
2466 range->bitrate[1] = 2000000;
2467 range->bitrate[2] = 5500000;
2468 range->bitrate[3] = 11000000;
2469 range->num_bitrates = 4;
2470
2471 range->min_rts = 0;
2472 range->max_rts = 2347;
2473 range->min_frag = 256;
2474 range->max_frag = 2346;
2475
2476 range->encoding_size[0] = 5;
2477 range->encoding_size[1] = 13;
2478 range->num_encoding_sizes = 2;
2479 range->max_encoding_tokens = 4;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002480
Linus Torvalds1da177e2005-04-16 15:20:36 -07002481 range->pmp_flags = IW_POWER_ON;
2482 range->pmt_flags = IW_POWER_ON;
2483 range->pm_capa = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002484
Linus Torvalds1da177e2005-04-16 15:20:36 -07002485 range->we_version_source = WIRELESS_EXT;
2486 range->we_version_compiled = WIRELESS_EXT;
2487 range->retry_capa = IW_RETRY_LIMIT ;
2488 range->retry_flags = IW_RETRY_LIMIT;
2489 range->r_time_flags = 0;
2490 range->min_retry = 1;
2491 range->max_retry = 65535;
2492
2493 return 0;
2494}
2495
2496static int atmel_set_wap(struct net_device *dev,
2497 struct iw_request_info *info,
2498 struct sockaddr *awrq,
2499 char *extra)
2500{
2501 struct atmel_private *priv = netdev_priv(dev);
2502 int i;
Dan Williams9a6301c2006-01-10 00:56:11 -05002503 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2504 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505 unsigned long flags;
2506
2507 if (awrq->sa_family != ARPHRD_ETHER)
2508 return -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002509
Dan Williams9a6301c2006-01-10 00:56:11 -05002510 if (!memcmp(any, awrq->sa_data, 6) ||
2511 !memcmp(off, awrq->sa_data, 6)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002512 del_timer_sync(&priv->management_timer);
2513 spin_lock_irqsave(&priv->irqlock, flags);
2514 atmel_scan(priv, 1);
2515 spin_unlock_irqrestore(&priv->irqlock, flags);
2516 return 0;
2517 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002518
2519 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002520 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2521 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2522 return -EINVAL;
2523 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2524 return -EINVAL;
2525 } else {
2526 del_timer_sync(&priv->management_timer);
2527 spin_lock_irqsave(&priv->irqlock, flags);
2528 atmel_join_bss(priv, i);
2529 spin_unlock_irqrestore(&priv->irqlock, flags);
2530 return 0;
2531 }
2532 }
2533 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002534
Linus Torvalds1da177e2005-04-16 15:20:36 -07002535 return -EINVAL;
2536}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002537
Linus Torvalds1da177e2005-04-16 15:20:36 -07002538static int atmel_config_commit(struct net_device *dev,
2539 struct iw_request_info *info, /* NULL */
2540 void *zwrq, /* NULL */
2541 char *extra) /* NULL */
2542{
2543 return atmel_open(dev);
2544}
2545
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002546static const iw_handler atmel_handler[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547{
2548 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002549 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002550 (iw_handler) NULL, /* SIOCSIWNWID */
2551 (iw_handler) NULL, /* SIOCGIWNWID */
2552 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2553 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2554 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2555 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002556 (iw_handler) NULL, /* SIOCSIWSENS */
2557 (iw_handler) NULL, /* SIOCGIWSENS */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002558 (iw_handler) NULL, /* SIOCSIWRANGE */
2559 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2560 (iw_handler) NULL, /* SIOCSIWPRIV */
2561 (iw_handler) NULL, /* SIOCGIWPRIV */
2562 (iw_handler) NULL, /* SIOCSIWSTATS */
2563 (iw_handler) NULL, /* SIOCGIWSTATS */
2564 (iw_handler) NULL, /* SIOCSIWSPY */
2565 (iw_handler) NULL, /* SIOCGIWSPY */
2566 (iw_handler) NULL, /* -- hole -- */
2567 (iw_handler) NULL, /* -- hole -- */
2568 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2569 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2570 (iw_handler) NULL, /* -- hole -- */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002571 (iw_handler) NULL, /* SIOCGIWAPLIST */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002572 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2573 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2574 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2575 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002576 (iw_handler) NULL, /* SIOCSIWNICKN */
2577 (iw_handler) NULL, /* SIOCGIWNICKN */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002578 (iw_handler) NULL, /* -- hole -- */
2579 (iw_handler) NULL, /* -- hole -- */
2580 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2581 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2582 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2583 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2584 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2585 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002586 (iw_handler) NULL, /* SIOCSIWTXPOW */
2587 (iw_handler) NULL, /* SIOCGIWTXPOW */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002588 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2589 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2590 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2591 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2592 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2593 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
Dan Williams9a6301c2006-01-10 00:56:11 -05002594 (iw_handler) NULL, /* -- hole -- */
2595 (iw_handler) NULL, /* -- hole -- */
2596 (iw_handler) NULL, /* SIOCSIWGENIE */
2597 (iw_handler) NULL, /* SIOCGIWGENIE */
2598 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2599 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2600 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2601 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2602 (iw_handler) NULL, /* SIOCSIWPMKSA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002603};
2604
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002605static const iw_handler atmel_private_handler[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -07002606{
2607 NULL, /* SIOCIWFIRSTPRIV */
2608};
2609
2610typedef struct atmel_priv_ioctl {
2611 char id[32];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002612 unsigned char __user *data;
2613 unsigned short len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002614} atmel_priv_ioctl;
2615
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002616#define ATMELFWL SIOCIWFIRSTPRIV
2617#define ATMELIDIFC ATMELFWL + 1
2618#define ATMELRD ATMELFWL + 2
2619#define ATMELMAGIC 0x51807
Linus Torvalds1da177e2005-04-16 15:20:36 -07002620#define REGDOMAINSZ 20
2621
2622static const struct iw_priv_args atmel_private_args[] = {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002623 {
2624 .cmd = ATMELFWL,
2625 .set_args = IW_PRIV_TYPE_BYTE
2626 | IW_PRIV_SIZE_FIXED
2627 | sizeof (atmel_priv_ioctl),
2628 .get_args = IW_PRIV_TYPE_NONE,
2629 .name = "atmelfwl"
2630 }, {
2631 .cmd = ATMELIDIFC,
2632 .set_args = IW_PRIV_TYPE_NONE,
2633 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2634 .name = "atmelidifc"
2635 }, {
2636 .cmd = ATMELRD,
2637 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2638 .get_args = IW_PRIV_TYPE_NONE,
2639 .name = "regdomain"
2640 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002641};
2642
John Daiker8830cb62009-03-08 22:18:35 -07002643static const struct iw_handler_def atmel_handler_def = {
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002644 .num_standard = ARRAY_SIZE(atmel_handler),
2645 .num_private = ARRAY_SIZE(atmel_private_handler),
2646 .num_private_args = ARRAY_SIZE(atmel_private_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002647 .standard = (iw_handler *) atmel_handler,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002648 .private = (iw_handler *) atmel_private_handler,
Jean Tourrilhes72f98d32005-09-02 11:36:00 -07002649 .private_args = (struct iw_priv_args *) atmel_private_args,
2650 .get_wireless_stats = atmel_get_wireless_stats
Linus Torvalds1da177e2005-04-16 15:20:36 -07002651};
2652
2653static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2654{
2655 int i, rc = 0;
2656 struct atmel_private *priv = netdev_priv(dev);
2657 atmel_priv_ioctl com;
2658 struct iwreq *wrq = (struct iwreq *) rq;
2659 unsigned char *new_firmware;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002660 char domain[REGDOMAINSZ + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002661
2662 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002663 case ATMELIDIFC:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002664 wrq->u.param.value = ATMELMAGIC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002665 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002666
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667 case ATMELFWL:
2668 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2669 rc = -EFAULT;
2670 break;
2671 }
2672
2673 if (!capable(CAP_NET_ADMIN)) {
2674 rc = -EPERM;
2675 break;
2676 }
2677
2678 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2679 rc = -ENOMEM;
2680 break;
2681 }
2682
2683 if (copy_from_user(new_firmware, com.data, com.len)) {
2684 kfree(new_firmware);
2685 rc = -EFAULT;
2686 break;
2687 }
2688
Jesper Juhlb4558ea2005-10-28 16:53:13 -04002689 kfree(priv->firmware);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002690
Linus Torvalds1da177e2005-04-16 15:20:36 -07002691 priv->firmware = new_firmware;
2692 priv->firmware_length = com.len;
2693 strncpy(priv->firmware_id, com.id, 31);
2694 priv->firmware_id[31] = '\0';
2695 break;
2696
2697 case ATMELRD:
2698 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2699 rc = -EFAULT;
2700 break;
2701 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002702
Linus Torvalds1da177e2005-04-16 15:20:36 -07002703 if (!capable(CAP_NET_ADMIN)) {
2704 rc = -EPERM;
2705 break;
2706 }
2707
2708 domain[REGDOMAINSZ] = 0;
2709 rc = -EINVAL;
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002710 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002711 /* strcasecmp doesn't exist in the library */
2712 char *a = channel_table[i].name;
2713 char *b = domain;
2714 while (*a) {
2715 char c1 = *a++;
2716 char c2 = *b++;
2717 if (tolower(c1) != tolower(c2))
2718 break;
2719 }
2720 if (!*a && !*b) {
2721 priv->config_reg_domain = channel_table[i].reg_domain;
2722 rc = 0;
2723 }
2724 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002725
Linus Torvalds1da177e2005-04-16 15:20:36 -07002726 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2727 rc = atmel_open(dev);
2728 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002729
Linus Torvalds1da177e2005-04-16 15:20:36 -07002730 default:
2731 rc = -EOPNOTSUPP;
2732 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002733
Linus Torvalds1da177e2005-04-16 15:20:36 -07002734 return rc;
2735}
2736
2737struct auth_body {
Al Viro0e5ce1f2007-12-22 13:45:50 -05002738 __le16 alg;
2739 __le16 trans_seq;
2740 __le16 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741 u8 el_id;
2742 u8 chall_text_len;
2743 u8 chall_text[253];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002744};
Linus Torvalds1da177e2005-04-16 15:20:36 -07002745
2746static void atmel_enter_state(struct atmel_private *priv, int new_state)
2747{
2748 int old_state = priv->station_state;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002749
Linus Torvalds1da177e2005-04-16 15:20:36 -07002750 if (new_state == old_state)
2751 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002752
Linus Torvalds1da177e2005-04-16 15:20:36 -07002753 priv->station_state = new_state;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002754
Linus Torvalds1da177e2005-04-16 15:20:36 -07002755 if (new_state == STATION_STATE_READY) {
2756 netif_start_queue(priv->dev);
2757 netif_carrier_on(priv->dev);
2758 }
2759
2760 if (old_state == STATION_STATE_READY) {
2761 netif_carrier_off(priv->dev);
2762 if (netif_running(priv->dev))
2763 netif_stop_queue(priv->dev);
2764 priv->last_beacon_timestamp = 0;
2765 }
2766}
2767
2768static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2769{
2770 struct {
2771 u8 BSSID[6];
2772 u8 SSID[MAX_SSID_LENGTH];
2773 u8 scan_type;
2774 u8 channel;
Al Viro0e5ce1f2007-12-22 13:45:50 -05002775 __le16 BSS_type;
2776 __le16 min_channel_time;
2777 __le16 max_channel_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002778 u8 options;
2779 u8 SSID_size;
2780 } cmd;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002781
Linus Torvalds1da177e2005-04-16 15:20:36 -07002782 memset(cmd.BSSID, 0xff, 6);
2783
2784 if (priv->fast_scan) {
2785 cmd.SSID_size = priv->SSID_size;
2786 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2787 cmd.min_channel_time = cpu_to_le16(10);
2788 cmd.max_channel_time = cpu_to_le16(50);
2789 } else {
2790 priv->BSS_list_entries = 0;
2791 cmd.SSID_size = 0;
2792 cmd.min_channel_time = cpu_to_le16(10);
2793 cmd.max_channel_time = cpu_to_le16(120);
2794 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002795
Linus Torvalds1da177e2005-04-16 15:20:36 -07002796 cmd.options = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002797
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798 if (!specific_ssid)
2799 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002800
2801 cmd.channel = (priv->channel & 0x7f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002802 cmd.scan_type = SCAN_TYPE_ACTIVE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002803 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002804 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002805
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2807
2808 /* This must come after all hardware access to avoid being messed up
2809 by stuff happening in interrupt context after we leave STATE_DOWN */
2810 atmel_enter_state(priv, STATION_STATE_SCANNING);
2811}
2812
2813static void join(struct atmel_private *priv, int type)
2814{
2815 struct {
2816 u8 BSSID[6];
2817 u8 SSID[MAX_SSID_LENGTH];
2818 u8 BSS_type; /* this is a short in a scan command - weird */
2819 u8 channel;
Al Viro0e5ce1f2007-12-22 13:45:50 -05002820 __le16 timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002821 u8 SSID_size;
2822 u8 reserved;
2823 } cmd;
2824
2825 cmd.SSID_size = priv->SSID_size;
2826 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2827 memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2828 cmd.channel = (priv->channel & 0x7f);
2829 cmd.BSS_type = type;
2830 cmd.timeout = cpu_to_le16(2000);
2831
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002832 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002833}
2834
Linus Torvalds1da177e2005-04-16 15:20:36 -07002835static void start(struct atmel_private *priv, int type)
2836{
2837 struct {
2838 u8 BSSID[6];
2839 u8 SSID[MAX_SSID_LENGTH];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002840 u8 BSS_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 u8 channel;
2842 u8 SSID_size;
2843 u8 reserved[3];
2844 } cmd;
2845
2846 cmd.SSID_size = priv->SSID_size;
2847 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2848 memcpy(cmd.BSSID, priv->BSSID, 6);
2849 cmd.BSS_type = type;
2850 cmd.channel = (priv->channel & 0x7f);
2851
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002852 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002853}
2854
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002855static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2856 u8 channel)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002857{
2858 int rejoin = 0;
Johannes Berg2c7060022008-10-30 22:09:54 +01002859 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002860 SHORT_PREAMBLE : LONG_PREAMBLE;
2861
2862 if (priv->preamble != new) {
2863 priv->preamble = new;
2864 rejoin = 1;
2865 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2866 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002867
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868 if (priv->channel != channel) {
2869 priv->channel = channel;
2870 rejoin = 1;
2871 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2872 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002873
Linus Torvalds1da177e2005-04-16 15:20:36 -07002874 if (rejoin) {
2875 priv->station_is_associated = 0;
2876 atmel_enter_state(priv, STATION_STATE_JOINNING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002877
Linus Torvalds1da177e2005-04-16 15:20:36 -07002878 if (priv->operating_mode == IW_MODE_INFRA)
2879 join(priv, BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002880 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881 join(priv, BSS_TYPE_AD_HOC);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002882 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002883}
2884
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002885static void send_authentication_request(struct atmel_private *priv, u16 system,
2886 u8 *challenge, int challenge_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002887{
Johannes Berg2c7060022008-10-30 22:09:54 +01002888 struct ieee80211_hdr header;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002889 struct auth_body auth;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002890
Johannes Berg2c7060022008-10-30 22:09:54 +01002891 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002892 header.duration_id = cpu_to_le16(0x8000);
Johannes Berg2c7060022008-10-30 22:09:54 +01002893 header.seq_ctrl = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002894 memcpy(header.addr1, priv->CurrentBSSID, 6);
2895 memcpy(header.addr2, priv->dev->dev_addr, 6);
2896 memcpy(header.addr3, priv->CurrentBSSID, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002897
2898 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002899 /* no WEP for authentication frames with TrSeqNo 1 */
John Daiker8830cb62009-03-08 22:18:35 -07002900 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002901
2902 auth.alg = cpu_to_le16(system);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002903
2904 auth.status = 0;
2905 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002906 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002907 priv->CurrentAuthentTransactionSeqNum += 2;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002908
Linus Torvalds1da177e2005-04-16 15:20:36 -07002909 if (challenge_len != 0) {
2910 auth.el_id = 16; /* challenge_text */
2911 auth.chall_text_len = challenge_len;
2912 memcpy(auth.chall_text, challenge, challenge_len);
2913 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2914 } else {
2915 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2916 }
2917}
2918
2919static void send_association_request(struct atmel_private *priv, int is_reassoc)
2920{
2921 u8 *ssid_el_p;
2922 int bodysize;
Johannes Berg2c7060022008-10-30 22:09:54 +01002923 struct ieee80211_hdr header;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924 struct ass_req_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05002925 __le16 capability;
2926 __le16 listen_interval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002927 u8 ap[6]; /* nothing after here directly accessible */
2928 u8 ssid_el_id;
2929 u8 ssid_len;
2930 u8 ssid[MAX_SSID_LENGTH];
2931 u8 sup_rates_el_id;
2932 u8 sup_rates_len;
2933 u8 rates[4];
2934 } body;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002935
Johannes Berg2c7060022008-10-30 22:09:54 +01002936 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
Jeff Garzikb4538722005-05-12 22:48:20 -04002937 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002938 header.duration_id = cpu_to_le16(0x8000);
Johannes Berg2c7060022008-10-30 22:09:54 +01002939 header.seq_ctrl = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002940
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002941 memcpy(header.addr1, priv->CurrentBSSID, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002942 memcpy(header.addr2, priv->dev->dev_addr, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002943 memcpy(header.addr3, priv->CurrentBSSID, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002944
Dan Williams4861dd72006-02-05 17:57:36 -05002945 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002946 if (priv->wep_is_on)
Dan Williams4861dd72006-02-05 17:57:36 -05002947 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002948 if (priv->preamble == SHORT_PREAMBLE)
Johannes Berg2c7060022008-10-30 22:09:54 +01002949 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002950
2951 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002952
Linus Torvalds1da177e2005-04-16 15:20:36 -07002953 /* current AP address - only in reassoc frame */
2954 if (is_reassoc) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002955 memcpy(body.ap, priv->CurrentBSSID, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956 ssid_el_p = (u8 *)&body.ssid_el_id;
2957 bodysize = 18 + priv->SSID_size;
2958 } else {
2959 ssid_el_p = (u8 *)&body.ap[0];
2960 bodysize = 12 + priv->SSID_size;
2961 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002962
Johannes Berg2c7060022008-10-30 22:09:54 +01002963 ssid_el_p[0] = WLAN_EID_SSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002964 ssid_el_p[1] = priv->SSID_size;
2965 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
Johannes Berg2c7060022008-10-30 22:09:54 +01002966 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967 ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
2968 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2969
2970 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2971}
2972
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002973static int is_frame_from_current_bss(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01002974 struct ieee80211_hdr *header)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002975{
Johannes Berg2c7060022008-10-30 22:09:54 +01002976 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002977 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2978 else
2979 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2980}
2981
2982static int retrieve_bss(struct atmel_private *priv)
2983{
2984 int i;
2985 int max_rssi = -128;
2986 int max_index = -1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002987
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988 if (priv->BSS_list_entries == 0)
2989 return -1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002990
Linus Torvalds1da177e2005-04-16 15:20:36 -07002991 if (priv->connect_to_any_BSS) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002992 /* Select a BSS with the max-RSSI but of the same type and of
2993 the same WEP mode and that it is not marked as 'bad' (i.e.
2994 we had previously failed to connect to this BSS with the
2995 settings that we currently use) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002996 priv->current_BSS = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002997 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002998 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002999 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003000 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
3001 !(priv->BSSinfo[i].channel & 0x80)) {
3002 max_rssi = priv->BSSinfo[i].RSSI;
3003 priv->current_BSS = max_index = i;
3004 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003005 }
3006 return max_index;
3007 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003008
3009 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003010 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3011 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3012 priv->operating_mode == priv->BSSinfo[i].BSStype &&
3013 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3014 if (priv->BSSinfo[i].RSSI >= max_rssi) {
3015 max_rssi = priv->BSSinfo[i].RSSI;
3016 max_index = i;
3017 }
3018 }
3019 }
3020 return max_index;
3021}
3022
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003023static void store_bss_info(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01003024 struct ieee80211_hdr *header, u16 capability,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003025 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3026 u8 *ssid, int is_beacon)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027{
Dan Williams4861dd72006-02-05 17:57:36 -05003028 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003029 int i, index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003030
3031 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3032 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003033 index = i;
3034
John Daiker8830cb62009-03-08 22:18:35 -07003035 /* If we process a probe and an entry from this BSS exists
Linus Torvalds1da177e2005-04-16 15:20:36 -07003036 we will update the BSS entry with the info from this BSS.
3037 If we process a beacon we will only update RSSI */
3038
3039 if (index == -1) {
3040 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3041 return;
3042 index = priv->BSS_list_entries++;
3043 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3044 priv->BSSinfo[index].RSSI = rssi;
3045 } else {
3046 if (rssi > priv->BSSinfo[index].RSSI)
3047 priv->BSSinfo[index].RSSI = rssi;
3048 if (is_beacon)
3049 return;
3050 }
3051
3052 priv->BSSinfo[index].channel = channel;
3053 priv->BSSinfo[index].beacon_period = beacon_period;
Dan Williams4861dd72006-02-05 17:57:36 -05003054 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3056 priv->BSSinfo[index].SSIDsize = ssid_len;
3057
Dan Williams4861dd72006-02-05 17:57:36 -05003058 if (capability & WLAN_CAPABILITY_IBSS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
Dan Williams4861dd72006-02-05 17:57:36 -05003060 else if (capability & WLAN_CAPABILITY_ESS)
John Daiker8830cb62009-03-08 22:18:35 -07003061 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003062
Johannes Berg2c7060022008-10-30 22:09:54 +01003063 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07003064 SHORT_PREAMBLE : LONG_PREAMBLE;
3065}
3066
3067static void authenticate(struct atmel_private *priv, u16 frame_len)
3068{
3069 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3070 u16 status = le16_to_cpu(auth->status);
3071 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003072 u16 system = le16_to_cpu(auth->alg);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003073
Dan Williams4861dd72006-02-05 17:57:36 -05003074 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003075 /* no WEP */
3076 if (priv->station_was_associated) {
3077 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3078 send_association_request(priv, 1);
3079 return;
3080 } else {
3081 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3082 send_association_request(priv, 0);
3083 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003084 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003085 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003086
Dan Williams4861dd72006-02-05 17:57:36 -05003087 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
Dan Williams73451372006-02-05 17:55:16 -05003088 int should_associate = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003089 /* WEP */
3090 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3091 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003092
Dan Williams4861dd72006-02-05 17:57:36 -05003093 if (system == WLAN_AUTH_OPEN) {
Dan Williams73451372006-02-05 17:55:16 -05003094 if (trans_seq_no == 0x0002) {
3095 should_associate = 1;
3096 }
Dan Williams4861dd72006-02-05 17:57:36 -05003097 } else if (system == WLAN_AUTH_SHARED_KEY) {
Dan Williams73451372006-02-05 17:55:16 -05003098 if (trans_seq_no == 0x0002 &&
Johannes Berg2c7060022008-10-30 22:09:54 +01003099 auth->el_id == WLAN_EID_CHALLENGE) {
Dan Williams73451372006-02-05 17:55:16 -05003100 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3101 return;
3102 } else if (trans_seq_no == 0x0004) {
3103 should_associate = 1;
3104 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003105 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003106
Dan Williams73451372006-02-05 17:55:16 -05003107 if (should_associate) {
John Daiker8830cb62009-03-08 22:18:35 -07003108 if (priv->station_was_associated) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003109 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3110 send_association_request(priv, 1);
3111 return;
3112 } else {
3113 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3114 send_association_request(priv, 0);
3115 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003116 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003117 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003118 }
3119
Dan Williams73451372006-02-05 17:55:16 -05003120 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
Dan Williamsd0c29122008-08-18 15:32:41 -04003121 /* Flip back and forth between WEP auth modes until the max
3122 * authentication tries has been exceeded.
3123 */
Dan Williams73451372006-02-05 17:55:16 -05003124 if (system == WLAN_AUTH_OPEN) {
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003125 priv->CurrentAuthentTransactionSeqNum = 0x001;
Dan Williams73451372006-02-05 17:55:16 -05003126 priv->exclude_unencrypted = 1;
3127 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3128 return;
John Daiker8830cb62009-03-08 22:18:35 -07003129 } else if (system == WLAN_AUTH_SHARED_KEY
3130 && priv->wep_is_on) {
Dan Williamsd0c29122008-08-18 15:32:41 -04003131 priv->CurrentAuthentTransactionSeqNum = 0x001;
3132 priv->exclude_unencrypted = 0;
3133 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3134 return;
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003135 } else if (priv->connect_to_any_BSS) {
3136 int bss_index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003137
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003138 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003139
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003140 if ((bss_index = retrieve_bss(priv)) != -1) {
3141 atmel_join_bss(priv, bss_index);
3142 return;
3143 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003144 }
3145 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003146
Linus Torvalds1da177e2005-04-16 15:20:36 -07003147 priv->AuthenticationRequestRetryCnt = 0;
3148 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3149 priv->station_is_associated = 0;
3150}
3151
3152static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3153{
3154 struct ass_resp_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05003155 __le16 capability;
3156 __le16 status;
3157 __le16 ass_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003158 u8 el_id;
3159 u8 length;
3160 u8 rates[4];
3161 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003162
3163 u16 status = le16_to_cpu(ass_resp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003164 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003165 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3166
Dan Williams9a6301c2006-01-10 00:56:11 -05003167 union iwreq_data wrqu;
3168
Linus Torvalds1da177e2005-04-16 15:20:36 -07003169 if (frame_len < 8 + rates_len)
3170 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003171
Dan Williams4861dd72006-02-05 17:57:36 -05003172 if (status == WLAN_STATUS_SUCCESS) {
3173 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003174 priv->AssociationRequestRetryCnt = 0;
3175 else
3176 priv->ReAssociationRequestRetryCnt = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003177
3178 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3179 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3180 atmel_set_mib(priv, Phy_Mib_Type,
3181 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003182 if (priv->power_mode == 0) {
3183 priv->listen_interval = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003184 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3185 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3186 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3187 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003188 } else {
3189 priv->listen_interval = 2;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003190 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3191 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3192 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3193 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003194 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003195
Linus Torvalds1da177e2005-04-16 15:20:36 -07003196 priv->station_is_associated = 1;
3197 priv->station_was_associated = 1;
3198 atmel_enter_state(priv, STATION_STATE_READY);
Dan Williams9a6301c2006-01-10 00:56:11 -05003199
3200 /* Send association event to userspace */
3201 wrqu.data.length = 0;
3202 wrqu.data.flags = 0;
3203 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3204 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3205 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3206
Linus Torvalds1da177e2005-04-16 15:20:36 -07003207 return;
3208 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003209
Dan Williams4861dd72006-02-05 17:57:36 -05003210 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3211 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3212 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003213 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3214 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3215 priv->AssociationRequestRetryCnt++;
3216 send_association_request(priv, 0);
3217 return;
3218 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003219
Dan Williams4861dd72006-02-05 17:57:36 -05003220 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3221 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3222 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003223 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3224 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3225 priv->ReAssociationRequestRetryCnt++;
3226 send_association_request(priv, 1);
3227 return;
3228 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003229
Linus Torvalds1da177e2005-04-16 15:20:36 -07003230 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3231 priv->station_is_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003232
3233 if (priv->connect_to_any_BSS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003234 int bss_index;
3235 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003236
3237 if ((bss_index = retrieve_bss(priv)) != -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003238 atmel_join_bss(priv, bss_index);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003239 }
3240}
3241
Hannes Eder2ed5ba82008-12-26 00:12:59 -08003242static void atmel_join_bss(struct atmel_private *priv, int bss_index)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003243{
3244 struct bss_info *bss = &priv->BSSinfo[bss_index];
3245
3246 memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3247 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3248
3249 /* The WPA stuff cares about the current AP address */
3250 if (priv->use_wpa)
3251 build_wpa_mib(priv);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003252
Linus Torvalds1da177e2005-04-16 15:20:36 -07003253 /* When switching to AdHoc turn OFF Power Save if needed */
3254
3255 if (bss->BSStype == IW_MODE_ADHOC &&
3256 priv->operating_mode != IW_MODE_ADHOC &&
3257 priv->power_mode) {
3258 priv->power_mode = 0;
3259 priv->listen_interval = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003260 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3261 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3262 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3263 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003264 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003265
Linus Torvalds1da177e2005-04-16 15:20:36 -07003266 priv->operating_mode = bss->BSStype;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003267 priv->channel = bss->channel & 0x7f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003268 priv->beacon_period = bss->beacon_period;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003269
Linus Torvalds1da177e2005-04-16 15:20:36 -07003270 if (priv->preamble != bss->preamble) {
3271 priv->preamble = bss->preamble;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003272 atmel_set_mib8(priv, Local_Mib_Type,
3273 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003274 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003275
Linus Torvalds1da177e2005-04-16 15:20:36 -07003276 if (!priv->wep_is_on && bss->UsingWEP) {
3277 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3278 priv->station_is_associated = 0;
3279 return;
3280 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003281
Linus Torvalds1da177e2005-04-16 15:20:36 -07003282 if (priv->wep_is_on && !bss->UsingWEP) {
3283 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3284 priv->station_is_associated = 0;
3285 return;
3286 }
3287
3288 atmel_enter_state(priv, STATION_STATE_JOINNING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003289
Linus Torvalds1da177e2005-04-16 15:20:36 -07003290 if (priv->operating_mode == IW_MODE_INFRA)
3291 join(priv, BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003292 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003293 join(priv, BSS_TYPE_AD_HOC);
3294}
3295
Linus Torvalds1da177e2005-04-16 15:20:36 -07003296static void restart_search(struct atmel_private *priv)
3297{
3298 int bss_index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003299
Linus Torvalds1da177e2005-04-16 15:20:36 -07003300 if (!priv->connect_to_any_BSS) {
3301 atmel_scan(priv, 1);
3302 } else {
3303 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003304
3305 if ((bss_index = retrieve_bss(priv)) != -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003306 atmel_join_bss(priv, bss_index);
3307 else
3308 atmel_scan(priv, 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003309 }
3310}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003311
3312static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3313{
3314 u8 old = priv->wstats.qual.level;
3315 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3316
3317 switch (priv->firmware_type) {
John Daiker8830cb62009-03-08 22:18:35 -07003318 case ATMEL_FW_TYPE_502E:
3319 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3320 break;
3321 default:
3322 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003323 }
3324
3325 rssi = rssi * 100 / max_rssi;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003326 if ((rssi + old) % 2)
3327 priv->wstats.qual.level = (rssi + old) / 2 + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003328 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003329 priv->wstats.qual.level = (rssi + old) / 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003330 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3331 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3332}
3333
3334static void atmel_smooth_qual(struct atmel_private *priv)
3335{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003336 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003337 while (time_diff--) {
3338 priv->last_qual += HZ;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003339 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3340 priv->wstats.qual.qual +=
Linus Torvalds1da177e2005-04-16 15:20:36 -07003341 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3342 priv->beacons_this_sec = 0;
3343 }
3344 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3345 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3346}
3347
Uwe Kleine-Koenig3dbda772009-07-23 08:31:31 +02003348/* deals with incoming management frames. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003349static void atmel_management_frame(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01003350 struct ieee80211_hdr *header,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003351 u16 frame_len, u8 rssi)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003352{
3353 u16 subtype;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003354
Johannes Berg2c7060022008-10-30 22:09:54 +01003355 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003356 switch (subtype) {
Dan Williams4861dd72006-02-05 17:57:36 -05003357 case IEEE80211_STYPE_BEACON:
3358 case IEEE80211_STYPE_PROBE_RESP:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003359
Linus Torvalds1da177e2005-04-16 15:20:36 -07003360 /* beacon frame has multiple variable-length fields -
3361 never let an engineer loose with a data structure design. */
3362 {
3363 struct beacon_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05003364 __le64 timestamp;
3365 __le16 interval;
3366 __le16 capability;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003367 u8 ssid_el_id;
3368 u8 ssid_length;
3369 /* ssid here */
3370 u8 rates_el_id;
3371 u8 rates_length;
3372 /* rates here */
3373 u8 ds_el_id;
3374 u8 ds_length;
3375 /* ds here */
3376 } *beacon = (struct beacon_format *)priv->rx_buf;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003377
Linus Torvalds1da177e2005-04-16 15:20:36 -07003378 u8 channel, rates_length, ssid_length;
3379 u64 timestamp = le64_to_cpu(beacon->timestamp);
3380 u16 beacon_interval = le16_to_cpu(beacon->interval);
3381 u16 capability = le16_to_cpu(beacon->capability);
3382 u8 *beaconp = priv->rx_buf;
3383 ssid_length = beacon->ssid_length;
3384 /* this blows chunks. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003385 if (frame_len < 14 || frame_len < ssid_length + 15)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003386 return;
3387 rates_length = beaconp[beacon->ssid_length + 15];
3388 if (frame_len < ssid_length + rates_length + 18)
3389 return;
3390 if (ssid_length > MAX_SSID_LENGTH)
3391 return;
3392 channel = beaconp[ssid_length + rates_length + 18];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003393
Linus Torvalds1da177e2005-04-16 15:20:36 -07003394 if (priv->station_state == STATION_STATE_READY) {
3395 smooth_rssi(priv, rssi);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003396 if (is_frame_from_current_bss(priv, header)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003397 priv->beacons_this_sec++;
3398 atmel_smooth_qual(priv);
3399 if (priv->last_beacon_timestamp) {
3400 /* Note truncate this to 32 bits - kernel can't divide a long long */
3401 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3402 int beacons = beacon_delay / (beacon_interval * 1000);
3403 if (beacons > 1)
3404 priv->wstats.miss.beacon += beacons - 1;
3405 }
3406 priv->last_beacon_timestamp = timestamp;
3407 handle_beacon_probe(priv, capability, channel);
3408 }
3409 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003410
3411 if (priv->station_state == STATION_STATE_SCANNING)
3412 store_bss_info(priv, header, capability,
3413 beacon_interval, channel, rssi,
3414 ssid_length,
3415 &beacon->rates_el_id,
Dan Williams4861dd72006-02-05 17:57:36 -05003416 subtype == IEEE80211_STYPE_BEACON);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003417 }
3418 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003419
Dan Williams4861dd72006-02-05 17:57:36 -05003420 case IEEE80211_STYPE_AUTH:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003421
3422 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3423 authenticate(priv, frame_len);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003424
Linus Torvalds1da177e2005-04-16 15:20:36 -07003425 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003426
Dan Williams4861dd72006-02-05 17:57:36 -05003427 case IEEE80211_STYPE_ASSOC_RESP:
3428 case IEEE80211_STYPE_REASSOC_RESP:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003429
3430 if (priv->station_state == STATION_STATE_ASSOCIATING ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003431 priv->station_state == STATION_STATE_REASSOCIATING)
3432 associate(priv, frame_len, subtype);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003433
Linus Torvalds1da177e2005-04-16 15:20:36 -07003434 break;
3435
Dan Williams4861dd72006-02-05 17:57:36 -05003436 case IEEE80211_STYPE_DISASSOC:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003437 if (priv->station_is_associated &&
3438 priv->operating_mode == IW_MODE_INFRA &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003439 is_frame_from_current_bss(priv, header)) {
3440 priv->station_was_associated = 0;
3441 priv->station_is_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003442
Linus Torvalds1da177e2005-04-16 15:20:36 -07003443 atmel_enter_state(priv, STATION_STATE_JOINNING);
3444 join(priv, BSS_TYPE_INFRASTRUCTURE);
3445 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003446
Linus Torvalds1da177e2005-04-16 15:20:36 -07003447 break;
3448
Dan Williams4861dd72006-02-05 17:57:36 -05003449 case IEEE80211_STYPE_DEAUTH:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003450 if (priv->operating_mode == IW_MODE_INFRA &&
3451 is_frame_from_current_bss(priv, header)) {
3452 priv->station_was_associated = 0;
3453
3454 atmel_enter_state(priv, STATION_STATE_JOINNING);
3455 join(priv, BSS_TYPE_INFRASTRUCTURE);
3456 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003457
Linus Torvalds1da177e2005-04-16 15:20:36 -07003458 break;
3459 }
3460}
3461
3462/* run when timer expires */
3463static void atmel_management_timer(u_long a)
3464{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003465 struct net_device *dev = (struct net_device *) a;
3466 struct atmel_private *priv = netdev_priv(dev);
3467 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003469 /* Check if the card has been yanked. */
3470 if (priv->card && priv->present_callback &&
3471 !(*priv->present_callback)(priv->card))
3472 return;
3473
3474 spin_lock_irqsave(&priv->irqlock, flags);
3475
3476 switch (priv->station_state) {
3477
3478 case STATION_STATE_AUTHENTICATING:
3479 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3480 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3481 priv->station_is_associated = 0;
3482 priv->AuthenticationRequestRetryCnt = 0;
3483 restart_search(priv);
3484 } else {
Dan Williams4861dd72006-02-05 17:57:36 -05003485 int auth = WLAN_AUTH_OPEN;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003486 priv->AuthenticationRequestRetryCnt++;
3487 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3488 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
Dan Williams73451372006-02-05 17:55:16 -05003489 if (priv->wep_is_on && priv->exclude_unencrypted)
Dan Williams4861dd72006-02-05 17:57:36 -05003490 auth = WLAN_AUTH_SHARED_KEY;
Dan Williams73451372006-02-05 17:55:16 -05003491 send_authentication_request(priv, auth, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003492 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003493 break;
3494
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003495 case STATION_STATE_ASSOCIATING:
3496 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3497 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3498 priv->station_is_associated = 0;
3499 priv->AssociationRequestRetryCnt = 0;
3500 restart_search(priv);
3501 } else {
3502 priv->AssociationRequestRetryCnt++;
3503 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3504 send_association_request(priv, 0);
3505 }
3506 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003507
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003508 case STATION_STATE_REASSOCIATING:
3509 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3510 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3511 priv->station_is_associated = 0;
3512 priv->ReAssociationRequestRetryCnt = 0;
3513 restart_search(priv);
3514 } else {
3515 priv->ReAssociationRequestRetryCnt++;
3516 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3517 send_association_request(priv, 1);
3518 }
3519 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003520
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003521 default:
3522 break;
3523 }
3524
3525 spin_unlock_irqrestore(&priv->irqlock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003526}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003527
Linus Torvalds1da177e2005-04-16 15:20:36 -07003528static void atmel_command_irq(struct atmel_private *priv)
3529{
3530 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3531 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3532 int fast_scan;
Dan Williams3a1af6f2006-03-31 15:13:31 -05003533 union iwreq_data wrqu;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003534
3535 if (status == CMD_STATUS_IDLE ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003536 status == CMD_STATUS_IN_PROGRESS)
3537 return;
3538
John Daiker8830cb62009-03-08 22:18:35 -07003539 switch (command) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003540 case CMD_Start:
3541 if (status == CMD_STATUS_COMPLETE) {
3542 priv->station_was_associated = priv->station_is_associated;
3543 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3544 (u8 *)priv->CurrentBSSID, 6);
3545 atmel_enter_state(priv, STATION_STATE_READY);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003546 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003547 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003548
Linus Torvalds1da177e2005-04-16 15:20:36 -07003549 case CMD_Scan:
3550 fast_scan = priv->fast_scan;
3551 priv->fast_scan = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003552
Linus Torvalds1da177e2005-04-16 15:20:36 -07003553 if (status != CMD_STATUS_COMPLETE) {
3554 atmel_scan(priv, 1);
3555 } else {
3556 int bss_index = retrieve_bss(priv);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003557 int notify_scan_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003558 if (bss_index != -1) {
3559 atmel_join_bss(priv, bss_index);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003560 } else if (priv->operating_mode == IW_MODE_ADHOC &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003561 priv->SSID_size != 0) {
3562 start(priv, BSS_TYPE_AD_HOC);
3563 } else {
3564 priv->fast_scan = !fast_scan;
3565 atmel_scan(priv, 1);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003566 notify_scan_complete = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003567 }
3568 priv->site_survey_state = SITE_SURVEY_COMPLETED;
Dan Williams3a1af6f2006-03-31 15:13:31 -05003569 if (notify_scan_complete) {
3570 wrqu.data.length = 0;
3571 wrqu.data.flags = 0;
3572 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3573 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003574 }
3575 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003576
Linus Torvalds1da177e2005-04-16 15:20:36 -07003577 case CMD_SiteSurvey:
3578 priv->fast_scan = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003579
Linus Torvalds1da177e2005-04-16 15:20:36 -07003580 if (status != CMD_STATUS_COMPLETE)
3581 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003582
Linus Torvalds1da177e2005-04-16 15:20:36 -07003583 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3584 if (priv->station_is_associated) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003585 atmel_enter_state(priv, STATION_STATE_READY);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003586 wrqu.data.length = 0;
3587 wrqu.data.flags = 0;
3588 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003589 } else {
3590 atmel_scan(priv, 1);
3591 }
3592 break;
3593
3594 case CMD_Join:
3595 if (status == CMD_STATUS_COMPLETE) {
3596 if (priv->operating_mode == IW_MODE_ADHOC) {
3597 priv->station_was_associated = priv->station_is_associated;
3598 atmel_enter_state(priv, STATION_STATE_READY);
3599 } else {
Dan Williams4861dd72006-02-05 17:57:36 -05003600 int auth = WLAN_AUTH_OPEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003601 priv->AuthenticationRequestRetryCnt = 0;
3602 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003603
Linus Torvalds1da177e2005-04-16 15:20:36 -07003604 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3605 priv->CurrentAuthentTransactionSeqNum = 0x0001;
Dan Williams73451372006-02-05 17:55:16 -05003606 if (priv->wep_is_on && priv->exclude_unencrypted)
Dan Williams4861dd72006-02-05 17:57:36 -05003607 auth = WLAN_AUTH_SHARED_KEY;
Dan Williams73451372006-02-05 17:55:16 -05003608 send_authentication_request(priv, auth, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003609 }
3610 return;
3611 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003612
Linus Torvalds1da177e2005-04-16 15:20:36 -07003613 atmel_scan(priv, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003614 }
3615}
3616
3617static int atmel_wakeup_firmware(struct atmel_private *priv)
3618{
3619 struct host_info_struct *iface = &priv->host_info;
3620 u16 mr1, mr3;
3621 int i;
3622
3623 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3624 atmel_set_gcr(priv->dev, GCR_REMAP);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003625
Linus Torvalds1da177e2005-04-16 15:20:36 -07003626 /* wake up on-board processor */
3627 atmel_clear_gcr(priv->dev, 0x0040);
3628 atmel_write16(priv->dev, BSR, BSS_SRAM);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003629
Linus Torvalds1da177e2005-04-16 15:20:36 -07003630 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3631 mdelay(100);
3632
3633 /* and wait for it */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003634 for (i = LOOP_RETRY_LIMIT; i; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003635 mr1 = atmel_read16(priv->dev, MR1);
3636 mr3 = atmel_read16(priv->dev, MR3);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003637
3638 if (mr3 & MAC_BOOT_COMPLETE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003639 break;
3640 if (mr1 & MAC_BOOT_COMPLETE &&
3641 priv->bus_type == BUS_TYPE_PCCARD)
3642 break;
3643 }
3644
3645 if (i == 0) {
3646 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003647 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003648 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003649
Linus Torvalds1da177e2005-04-16 15:20:36 -07003650 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3651 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003652 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003653 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003654
3655 /* now check for completion of MAC initialization through
3656 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3657 MAC initialization, check completion status, set interrupt mask,
3658 enables interrupts and calls Tx and Rx initialization functions */
3659
Linus Torvalds1da177e2005-04-16 15:20:36 -07003660 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003661
3662 for (i = LOOP_RETRY_LIMIT; i; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003663 mr1 = atmel_read16(priv->dev, MR1);
3664 mr3 = atmel_read16(priv->dev, MR3);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003665
3666 if (mr3 & MAC_INIT_COMPLETE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003667 break;
3668 if (mr1 & MAC_INIT_COMPLETE &&
3669 priv->bus_type == BUS_TYPE_PCCARD)
3670 break;
3671 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003672
Linus Torvalds1da177e2005-04-16 15:20:36 -07003673 if (i == 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003674 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3675 priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003676 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003677 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003678
Linus Torvalds1da177e2005-04-16 15:20:36 -07003679 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3680 if ((mr3 & MAC_INIT_COMPLETE) &&
3681 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3682 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003683 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003684 }
3685 if ((mr1 & MAC_INIT_COMPLETE) &&
3686 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3687 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003688 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003689 }
3690
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003691 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003692 priv->host_info_base, sizeof(*iface));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003693
Linus Torvalds1da177e2005-04-16 15:20:36 -07003694 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3695 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3696 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3697 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3698 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3699 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3700 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3701 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3702 iface->build_version = le16_to_cpu(iface->build_version);
3703 iface->command_pos = le16_to_cpu(iface->command_pos);
3704 iface->major_version = le16_to_cpu(iface->major_version);
3705 iface->minor_version = le16_to_cpu(iface->minor_version);
3706 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3707 iface->mac_status = le16_to_cpu(iface->mac_status);
3708
Dan Williams3c34a5d2008-08-18 15:40:02 -04003709 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003710}
3711
3712/* determine type of memory and MAC address */
3713static int probe_atmel_card(struct net_device *dev)
3714{
3715 int rc = 0;
3716 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003717
Linus Torvalds1da177e2005-04-16 15:20:36 -07003718 /* reset pccard */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003719 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003720 atmel_write16(dev, GCR, 0x0060);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003721
Linus Torvalds1da177e2005-04-16 15:20:36 -07003722 atmel_write16(dev, GCR, 0x0040);
3723 mdelay(500);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003724
Linus Torvalds1da177e2005-04-16 15:20:36 -07003725 if (atmel_read16(dev, MR2) == 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003726 /* No stored firmware so load a small stub which just
Linus Torvalds1da177e2005-04-16 15:20:36 -07003727 tells us the MAC address */
3728 int i;
3729 priv->card_type = CARD_TYPE_EEPROM;
3730 atmel_write16(dev, BSR, BSS_IRAM);
3731 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3732 atmel_set_gcr(dev, GCR_REMAP);
3733 atmel_clear_gcr(priv->dev, 0x0040);
3734 atmel_write16(dev, BSR, BSS_SRAM);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003735 for (i = LOOP_RETRY_LIMIT; i; i--)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003736 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3737 break;
3738 if (i == 0) {
3739 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3740 } else {
3741 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3742 /* got address, now squash it again until the network
3743 interface is opened */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003744 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003745 atmel_write16(dev, GCR, 0x0060);
3746 atmel_write16(dev, GCR, 0x0040);
3747 rc = 1;
3748 }
3749 } else if (atmel_read16(dev, MR4) == 0) {
3750 /* Mac address easy in this case. */
3751 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003752 atmel_write16(dev, BSR, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003753 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3754 atmel_write16(dev, BSR, 0x200);
3755 rc = 1;
3756 } else {
3757 /* Standard firmware in flash, boot it up and ask
3758 for the Mac Address */
3759 priv->card_type = CARD_TYPE_SPI_FLASH;
Dan Williams3c34a5d2008-08-18 15:40:02 -04003760 if (atmel_wakeup_firmware(priv) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003761 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003762
Linus Torvalds1da177e2005-04-16 15:20:36 -07003763 /* got address, now squash it again until the network
3764 interface is opened */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003765 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003766 atmel_write16(dev, GCR, 0x0060);
3767 atmel_write16(dev, GCR, 0x0040);
3768 rc = 1;
3769 }
3770 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003771
Linus Torvalds1da177e2005-04-16 15:20:36 -07003772 if (rc) {
3773 if (dev->dev_addr[0] == 0xFF) {
Joe Perches3370a892010-11-20 18:38:55 -08003774 static const u8 default_mac[] = {
3775 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3776 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003777 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3778 memcpy(dev->dev_addr, default_mac, 6);
3779 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003780 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003781
Linus Torvalds1da177e2005-04-16 15:20:36 -07003782 return rc;
3783}
3784
Linus Torvalds1da177e2005-04-16 15:20:36 -07003785/* Move the encyption information on the MIB structure.
3786 This routine is for the pre-WPA firmware: later firmware has
3787 a different format MIB and a different routine. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003788static void build_wep_mib(struct atmel_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003789{
3790 struct { /* NB this is matched to the hardware, don't change. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003791 u8 wep_is_on;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003792 u8 default_key; /* 0..3 */
3793 u8 reserved;
3794 u8 exclude_unencrypted;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003795
Linus Torvalds1da177e2005-04-16 15:20:36 -07003796 u32 WEPICV_error_count;
3797 u32 WEP_excluded_count;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003798
Linus Torvalds1da177e2005-04-16 15:20:36 -07003799 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003800 u8 encryption_level; /* 0, 1, 2 */
3801 u8 reserved2[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07003802 } mib;
3803 int i;
3804
3805 mib.wep_is_on = priv->wep_is_on;
3806 if (priv->wep_is_on) {
3807 if (priv->wep_key_len[priv->default_key] > 5)
3808 mib.encryption_level = 2;
3809 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003810 mib.encryption_level = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003811 } else {
3812 mib.encryption_level = 0;
3813 }
3814
3815 mib.default_key = priv->default_key;
3816 mib.exclude_unencrypted = priv->exclude_unencrypted;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003817
3818 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003819 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003820
Linus Torvalds1da177e2005-04-16 15:20:36 -07003821 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3822}
3823
3824static void build_wpa_mib(struct atmel_private *priv)
3825{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003826 /* This is for the later (WPA enabled) firmware. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003827
3828 struct { /* NB this is matched to the hardware, don't change. */
3829 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3830 u8 receiver_address[6];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003831 u8 wep_is_on;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003832 u8 default_key; /* 0..3 */
3833 u8 group_key;
3834 u8 exclude_unencrypted;
3835 u8 encryption_type;
3836 u8 reserved;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003837
Linus Torvalds1da177e2005-04-16 15:20:36 -07003838 u32 WEPICV_error_count;
3839 u32 WEP_excluded_count;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003840
Linus Torvalds1da177e2005-04-16 15:20:36 -07003841 u8 key_RSC[4][8];
3842 } mib;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003843
Linus Torvalds1da177e2005-04-16 15:20:36 -07003844 int i;
3845
3846 mib.wep_is_on = priv->wep_is_on;
3847 mib.exclude_unencrypted = priv->exclude_unencrypted;
3848 memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003849
Linus Torvalds1da177e2005-04-16 15:20:36 -07003850 /* zero all the keys before adding in valid ones. */
3851 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003852
Linus Torvalds1da177e2005-04-16 15:20:36 -07003853 if (priv->wep_is_on) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003854 /* There's a comment in the Atmel code to the effect that this
3855 is only valid when still using WEP, it may need to be set to
3856 something to use WPA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003857 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003858
Linus Torvalds1da177e2005-04-16 15:20:36 -07003859 mib.default_key = mib.group_key = 255;
3860 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3861 if (priv->wep_key_len[i] > 0) {
3862 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3863 if (i == priv->default_key) {
3864 mib.default_key = i;
3865 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003866 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003867 } else {
3868 mib.group_key = i;
3869 priv->group_cipher_suite = priv->pairwise_cipher_suite;
John Daiker8830cb62009-03-08 22:18:35 -07003870 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003871 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003872 }
3873 }
3874 }
3875 if (mib.default_key == 255)
3876 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3877 if (mib.group_key == 255)
3878 mib.group_key = mib.default_key;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003879
Linus Torvalds1da177e2005-04-16 15:20:36 -07003880 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003881
Linus Torvalds1da177e2005-04-16 15:20:36 -07003882 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3883}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003884
3885static int reset_atmel_card(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003886{
3887 /* do everything necessary to wake up the hardware, including
3888 waiting for the lightning strike and throwing the knife switch....
3889
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003890 set all the Mib values which matter in the card to match
Linus Torvalds1da177e2005-04-16 15:20:36 -07003891 their settings in the atmel_private structure. Some of these
3892 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3893 can only be changed by tearing down the world and coming back through
3894 here.
3895
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003896 This routine is also responsible for initialising some
3897 hardware-specific fields in the atmel_private structure,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003898 including a copy of the firmware's hostinfo stucture
Nick Andrewd5352952009-01-03 18:51:33 +11003899 which is the route into the rest of the firmware datastructures. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003900
3901 struct atmel_private *priv = netdev_priv(dev);
3902 u8 configuration;
Dan Williams9a6301c2006-01-10 00:56:11 -05003903 int old_state = priv->station_state;
Dan Williams3c34a5d2008-08-18 15:40:02 -04003904 int err = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003905
Linus Torvalds1da177e2005-04-16 15:20:36 -07003906 /* data to add to the firmware names, in priority order
3907 this implemenents firmware versioning */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003908
Linus Torvalds1da177e2005-04-16 15:20:36 -07003909 static char *firmware_modifier[] = {
3910 "-wpa",
3911 "",
3912 NULL
3913 };
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003914
Linus Torvalds1da177e2005-04-16 15:20:36 -07003915 /* reset pccard */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003916 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003917 atmel_write16(priv->dev, GCR, 0x0060);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003918
Linus Torvalds1da177e2005-04-16 15:20:36 -07003919 /* stop card , disable interrupts */
3920 atmel_write16(priv->dev, GCR, 0x0040);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003921
Linus Torvalds1da177e2005-04-16 15:20:36 -07003922 if (priv->card_type == CARD_TYPE_EEPROM) {
3923 /* copy in firmware if needed */
3924 const struct firmware *fw_entry = NULL;
David Woodhouse2f26e8a2008-05-24 00:09:29 +01003925 const unsigned char *fw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003926 int len = priv->firmware_length;
3927 if (!(fw = priv->firmware)) {
3928 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3929 if (strlen(priv->firmware_id) == 0) {
3930 printk(KERN_INFO
3931 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3932 dev->name);
3933 printk(KERN_INFO
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003934 "%s: if not, use the firmware= module parameter.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003935 dev->name);
3936 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3937 }
Dan Williams3c34a5d2008-08-18 15:40:02 -04003938 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3939 if (err != 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003940 printk(KERN_ALERT
3941 "%s: firmware %s is missing, cannot continue.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003942 dev->name, priv->firmware_id);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003943 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003944 }
3945 } else {
3946 int fw_index = 0;
3947 int success = 0;
3948
3949 /* get firmware filename entry based on firmware type ID */
3950 while (fw_table[fw_index].fw_type != priv->firmware_type
3951 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3952 fw_index++;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003953
Linus Torvalds1da177e2005-04-16 15:20:36 -07003954 /* construct the actual firmware file name */
3955 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3956 int i;
3957 for (i = 0; firmware_modifier[i]; i++) {
3958 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3959 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3960 priv->firmware_id[31] = '\0';
3961 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3962 success = 1;
3963 break;
3964 }
3965 }
3966 }
3967 if (!success) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003968 printk(KERN_ALERT
3969 "%s: firmware %s is missing, cannot start.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003970 dev->name, priv->firmware_id);
3971 priv->firmware_id[0] = '\0';
Dan Williams3c34a5d2008-08-18 15:40:02 -04003972 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003973 }
3974 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003975
Linus Torvalds1da177e2005-04-16 15:20:36 -07003976 fw = fw_entry->data;
3977 len = fw_entry->size;
3978 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003979
John Daiker8830cb62009-03-08 22:18:35 -07003980 if (len <= 0x6000) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003981 atmel_write16(priv->dev, BSR, BSS_IRAM);
3982 atmel_copy_to_card(priv->dev, 0, fw, len);
3983 atmel_set_gcr(priv->dev, GCR_REMAP);
3984 } else {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003985 /* Remap */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003986 atmel_set_gcr(priv->dev, GCR_REMAP);
3987 atmel_write16(priv->dev, BSR, BSS_IRAM);
3988 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3989 atmel_write16(priv->dev, BSR, 0x2ff);
3990 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3991 }
3992
3993 if (fw_entry)
3994 release_firmware(fw_entry);
3995 }
3996
Dan Williams3c34a5d2008-08-18 15:40:02 -04003997 err = atmel_wakeup_firmware(priv);
3998 if (err != 0)
3999 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004000
4001 /* Check the version and set the correct flag for wpa stuff,
4002 old and new firmware is incompatible.
4003 The pre-wpa 3com firmware reports major version 5,
4004 the wpa 3com firmware is major version 4 and doesn't need
4005 the 3com broken-ness filter. */
4006 priv->use_wpa = (priv->host_info.major_version == 4);
4007 priv->radio_on_broken = (priv->host_info.major_version == 5);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004008
John Daiker8830cb62009-03-08 22:18:35 -07004009 /* unmask all irq sources */
Linus Torvalds1da177e2005-04-16 15:20:36 -07004010 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004011
Linus Torvalds1da177e2005-04-16 15:20:36 -07004012 /* int Tx system and enable Tx */
4013 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4014 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4015 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4016 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4017
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004018 priv->tx_desc_free = priv->host_info.tx_desc_count;
4019 priv->tx_desc_head = 0;
4020 priv->tx_desc_tail = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004021 priv->tx_desc_previous = 0;
4022 priv->tx_free_mem = priv->host_info.tx_buff_size;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004023 priv->tx_buff_head = 0;
4024 priv->tx_buff_tail = 0;
4025
4026 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4027 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004028 configuration | FUNC_CTRL_TxENABLE);
4029
4030 /* init Rx system and enable */
4031 priv->rx_desc_head = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004032
4033 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4034 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004035 configuration | FUNC_CTRL_RxENABLE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004036
Linus Torvalds1da177e2005-04-16 15:20:36 -07004037 if (!priv->radio_on_broken) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004038 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
Linus Torvalds1da177e2005-04-16 15:20:36 -07004039 CMD_STATUS_REJECTED_RADIO_OFF) {
Dan Williams3c34a5d2008-08-18 15:40:02 -04004040 printk(KERN_INFO "%s: cannot turn the radio on.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07004041 dev->name);
John Daiker8830cb62009-03-08 22:18:35 -07004042 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004043 }
4044 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004045
Linus Torvalds1da177e2005-04-16 15:20:36 -07004046 /* set up enough MIB values to run. */
4047 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4048 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4049 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4050 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4051 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4052 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4053 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004054 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004055 priv->dev->dev_addr, 6);
4056 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4057 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4058 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4059 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4060 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4061 if (priv->use_wpa)
4062 build_wpa_mib(priv);
4063 else
4064 build_wep_mib(priv);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004065
John Daiker8830cb62009-03-08 22:18:35 -07004066 if (old_state == STATION_STATE_READY) {
Dan Williams9a6301c2006-01-10 00:56:11 -05004067 union iwreq_data wrqu;
4068
4069 wrqu.data.length = 0;
4070 wrqu.data.flags = 0;
4071 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4072 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4073 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4074 }
4075
Dan Williams3c34a5d2008-08-18 15:40:02 -04004076 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004077}
4078
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004079static void atmel_send_command(struct atmel_private *priv, int command,
4080 void *cmd, int cmd_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004081{
4082 if (cmd)
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004083 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004084 cmd, cmd_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004085
Linus Torvalds1da177e2005-04-16 15:20:36 -07004086 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4087 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4088}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004089
4090static int atmel_send_command_wait(struct atmel_private *priv, int command,
4091 void *cmd, int cmd_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004092{
4093 int i, status;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004094
Linus Torvalds1da177e2005-04-16 15:20:36 -07004095 atmel_send_command(priv, command, cmd, cmd_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004096
Linus Torvalds1da177e2005-04-16 15:20:36 -07004097 for (i = 5000; i; i--) {
4098 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004099 if (status != CMD_STATUS_IDLE &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07004100 status != CMD_STATUS_IN_PROGRESS)
4101 break;
4102 udelay(20);
4103 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004104
Linus Torvalds1da177e2005-04-16 15:20:36 -07004105 if (i == 0) {
4106 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4107 status = CMD_STATUS_HOST_ERROR;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004108 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004109 if (command != CMD_EnableRadio)
4110 status = CMD_STATUS_COMPLETE;
4111 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004112
Linus Torvalds1da177e2005-04-16 15:20:36 -07004113 return status;
4114}
4115
4116static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4117{
4118 struct get_set_mib m;
4119 m.type = type;
4120 m.size = 1;
4121 m.index = index;
4122
4123 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4124 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4125}
4126
4127static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4128{
4129 struct get_set_mib m;
4130 m.type = type;
4131 m.size = 1;
4132 m.index = index;
4133 m.data[0] = data;
4134
4135 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4136}
4137
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004138static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4139 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004140{
4141 struct get_set_mib m;
4142 m.type = type;
4143 m.size = 2;
4144 m.index = index;
4145 m.data[0] = data;
4146 m.data[1] = data >> 8;
4147
4148 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4149}
4150
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004151static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4152 u8 *data, int data_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004153{
4154 struct get_set_mib m;
4155 m.type = type;
4156 m.size = data_len;
4157 m.index = index;
4158
4159 if (data_len > MIB_MAX_DATA_BYTES)
4160 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004161
Linus Torvalds1da177e2005-04-16 15:20:36 -07004162 memcpy(m.data, data, data_len);
4163 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4164}
4165
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004166static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4167 u8 *data, int data_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004168{
4169 struct get_set_mib m;
4170 m.type = type;
4171 m.size = data_len;
4172 m.index = index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004173
Linus Torvalds1da177e2005-04-16 15:20:36 -07004174 if (data_len > MIB_MAX_DATA_BYTES)
4175 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004176
Linus Torvalds1da177e2005-04-16 15:20:36 -07004177 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004178 atmel_copy_to_host(priv->dev, data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004179 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4180}
4181
4182static void atmel_writeAR(struct net_device *dev, u16 data)
4183{
4184 int i;
4185 outw(data, dev->base_addr + AR);
4186 /* Address register appears to need some convincing..... */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004187 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004188 outw(data, dev->base_addr + AR);
4189}
4190
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004191static void atmel_copy_to_card(struct net_device *dev, u16 dest,
David Woodhouse2f26e8a2008-05-24 00:09:29 +01004192 const unsigned char *src, u16 len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004193{
4194 int i;
4195 atmel_writeAR(dev, dest);
4196 if (dest % 2) {
4197 atmel_write8(dev, DR, *src);
4198 src++; len--;
4199 }
4200 for (i = len; i > 1 ; i -= 2) {
4201 u8 lb = *src++;
4202 u8 hb = *src++;
4203 atmel_write16(dev, DR, lb | (hb << 8));
4204 }
4205 if (i)
4206 atmel_write8(dev, DR, *src);
4207}
4208
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004209static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4210 u16 src, u16 len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004211{
4212 int i;
4213 atmel_writeAR(dev, src);
4214 if (src % 2) {
4215 *dest = atmel_read8(dev, DR);
4216 dest++; len--;
4217 }
4218 for (i = len; i > 1 ; i -= 2) {
4219 u16 hw = atmel_read16(dev, DR);
4220 *dest++ = hw;
4221 *dest++ = hw >> 8;
4222 }
4223 if (i)
4224 *dest = atmel_read8(dev, DR);
4225}
4226
4227static void atmel_set_gcr(struct net_device *dev, u16 mask)
4228{
4229 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4230}
4231
4232static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4233{
4234 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4235}
4236
4237static int atmel_lock_mac(struct atmel_private *priv)
4238{
4239 int i, j = 20;
4240 retry:
4241 for (i = 5000; i; i--) {
4242 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4243 break;
4244 udelay(20);
4245 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004246
4247 if (!i)
4248 return 0; /* timed out */
4249
Linus Torvalds1da177e2005-04-16 15:20:36 -07004250 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4251 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4252 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004253 if (!j--)
4254 return 0; /* timed out */
Linus Torvalds1da177e2005-04-16 15:20:36 -07004255 goto retry;
4256 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004257
Linus Torvalds1da177e2005-04-16 15:20:36 -07004258 return 1;
4259}
4260
4261static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4262{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004263 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004264 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4265 atmel_write16(priv->dev, DR, data >> 16);
4266}
4267
4268/***************************************************************************/
4269/* There follows the source form of the MAC address reading firmware */
4270/***************************************************************************/
4271#if 0
4272
4273/* Copyright 2003 Matthew T. Russotto */
4274/* But derived from the Atmel 76C502 firmware written by Atmel and */
4275/* included in "atmel wireless lan drivers" package */
4276/**
4277 This file is part of net.russotto.AtmelMACFW, hereto referred to
4278 as AtmelMACFW
4279
4280 AtmelMACFW is free software; you can redistribute it and/or modify
4281 it under the terms of the GNU General Public License version 2
4282 as published by the Free Software Foundation.
4283
4284 AtmelMACFW is distributed in the hope that it will be useful,
4285 but WITHOUT ANY WARRANTY; without even the implied warranty of
4286 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4287 GNU General Public License for more details.
4288
4289 You should have received a copy of the GNU General Public License
4290 along with AtmelMACFW; if not, write to the Free Software
4291 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
4292
4293****************************************************************************/
4294/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4295/* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4296/* It only works on SPI EEPROM versions of the card. */
4297
4298/* This firmware initializes the SPI controller and clock, reads the MAC */
4299/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4300/* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4301/* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4302/* MR4, for investigational purposes (maybe we can determine chip type */
4303/* from that?) */
4304
4305 .org 0
4306 .set MRBASE, 0x8000000
4307 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4308 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4309 .set SRAM_BASE, 0x02000000
4310 .set SP_BASE, 0x0F300000
4311 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4312 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4313 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4314 .set STACK_BASE, 0x5600
4315 .set SP_SR, 0x10
4316 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4317 .set SP_RDRF, 1 /* status register bit -- RDR full */
4318 .set SP_SWRST, 0x80
4319 .set SP_SPIEN, 0x1
4320 .set SP_CR, 0 /* control register */
4321 .set SP_MR, 4 /* mode register */
4322 .set SP_RDR, 0x08 /* Read Data Register */
4323 .set SP_TDR, 0x0C /* Transmit Data Register */
4324 .set SP_CSR0, 0x30 /* chip select registers */
4325 .set SP_CSR1, 0x34
4326 .set SP_CSR2, 0x38
4327 .set SP_CSR3, 0x3C
4328 .set NVRAM_CMD_RDSR, 5 /* read status register */
4329 .set NVRAM_CMD_READ, 3 /* read data */
4330 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4331 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4332 serial output, since SO is normally high. But it
4333 does cause 8 clock cycles and thus 8 bits to be
4334 clocked in to the chip. See Atmel's SPI
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004335 controller (e.g. AT91M55800) timing and 4K
Linus Torvalds1da177e2005-04-16 15:20:36 -07004336 SPI EEPROM manuals */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004337
Linus Torvalds1da177e2005-04-16 15:20:36 -07004338 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4339 .set NVRAM_IMAGE, 0x02000200
4340 .set NVRAM_LENGTH, 0x0200
4341 .set MAC_ADDRESS_MIB, SRAM_BASE
4342 .set MAC_ADDRESS_LENGTH, 6
John Daiker8830cb62009-03-08 22:18:35 -07004343 .set MAC_BOOT_FLAG, 0x10
Linus Torvalds1da177e2005-04-16 15:20:36 -07004344 .set MR1, 0
4345 .set MR2, 4
4346 .set MR3, 8
4347 .set MR4, 0xC
4348RESET_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004349 b RESET_HANDLER
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004350UNDEF_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004351 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004352SWI_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004353 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004354IABORT_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004355 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004356DABORT_VECTOR:
4357RESERVED_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004358 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004359IRQ_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004360 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004361FIQ_VECTOR:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004362 b HALT1
4363HALT1: b HALT1
4364RESET_HANDLER:
4365 mov r0, #CPSR_INITIAL
4366 msr CPSR_c, r0 /* This is probably unnecessary */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004367
Linus Torvalds1da177e2005-04-16 15:20:36 -07004368/* I'm guessing this is initializing clock generator electronics for SPI */
4369 ldr r0, =SPI_CGEN_BASE
4370 mov r1, #0
4371 mov r1, r1, lsl #3
John Daiker8830cb62009-03-08 22:18:35 -07004372 orr r1, r1, #0
Linus Torvalds1da177e2005-04-16 15:20:36 -07004373 str r1, [r0]
4374 ldr r1, [r0, #28]
4375 bic r1, r1, #16
4376 str r1, [r0, #28]
4377 mov r1, #1
4378 str r1, [r0, #8]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004379
Linus Torvalds1da177e2005-04-16 15:20:36 -07004380 ldr r0, =MRBASE
4381 mov r1, #0
4382 strh r1, [r0, #MR1]
4383 strh r1, [r0, #MR2]
4384 strh r1, [r0, #MR3]
4385 strh r1, [r0, #MR4]
4386
4387 mov sp, #STACK_BASE
4388 bl SP_INIT
4389 mov r0, #10
4390 bl DELAY9
4391 bl GET_MAC_ADDR
4392 bl GET_WHOLE_NVRAM
4393 ldr r0, =MRBASE
4394 ldr r1, =MAC_ADDRESS_MIB
4395 strh r1, [r0, #MR2]
4396 ldr r1, =NVRAM_IMAGE
4397 strh r1, [r0, #MR4]
4398 mov r1, #MAC_BOOT_FLAG
4399 strh r1, [r0, #MR3]
4400HALT2: b HALT2
4401.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4402GET_WHOLE_NVRAM:
4403 stmdb sp!, {lr}
4404 mov r2, #0 /* 0th bytes of NVRAM */
4405 mov r3, #NVRAM_LENGTH
4406 mov r1, #0 /* not used in routine */
4407 ldr r0, =NVRAM_IMAGE
4408 bl NVRAM_XFER
4409 ldmia sp!, {lr}
4410 bx lr
4411.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004412
Linus Torvalds1da177e2005-04-16 15:20:36 -07004413.func Get_MAC_Addr, GET_MAC_ADDR
4414GET_MAC_ADDR:
4415 stmdb sp!, {lr}
4416 mov r2, #0x120 /* address of MAC Address within NVRAM */
4417 mov r3, #MAC_ADDRESS_LENGTH
4418 mov r1, #0 /* not used in routine */
4419 ldr r0, =MAC_ADDRESS_MIB
4420 bl NVRAM_XFER
4421 ldmia sp!, {lr}
4422 bx lr
4423.endfunc
4424.ltorg
4425.func Delay9, DELAY9
4426DELAY9:
4427 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004428DELAYLOOP:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004429 beq DELAY9_done
4430 subs r0, r0, #1
4431 b DELAYLOOP
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004432DELAY9_done:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004433 bx lr
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004434.endfunc
Linus Torvalds1da177e2005-04-16 15:20:36 -07004435
4436.func SP_Init, SP_INIT
4437SP_INIT:
4438 mov r1, #SP_SWRST
4439 ldr r0, =SP_BASE
4440 str r1, [r0, #SP_CR] /* reset the SPI */
4441 mov r1, #0
4442 str r1, [r0, #SP_CR] /* release SPI from reset state */
4443 mov r1, #SP_SPIEN
4444 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4445 str r1, [r0, #SP_CR] /* enable the SPI */
4446
4447/* My guess would be this turns on the SPI clock */
4448 ldr r3, =SPI_CGEN_BASE
4449 ldr r1, [r3, #28]
4450 orr r1, r1, #0x2000
4451 str r1, [r3, #28]
4452
4453 ldr r1, =0x2000c01
4454 str r1, [r0, #SP_CSR0]
4455 ldr r1, =0x2000201
4456 str r1, [r0, #SP_CSR1]
4457 str r1, [r0, #SP_CSR2]
4458 str r1, [r0, #SP_CSR3]
4459 ldr r1, [r0, #SP_SR]
4460 ldr r0, [r0, #SP_RDR]
4461 bx lr
4462.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004463.func NVRAM_Init, NVRAM_INIT
Linus Torvalds1da177e2005-04-16 15:20:36 -07004464NVRAM_INIT:
4465 ldr r1, =SP_BASE
4466 ldr r0, [r1, #SP_RDR]
4467 mov r0, #NVRAM_CMD_RDSR
4468 str r0, [r1, #SP_TDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004469SP_loop1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004470 ldr r0, [r1, #SP_SR]
4471 tst r0, #SP_TDRE
4472 beq SP_loop1
4473
4474 mov r0, #SPI_8CLOCKS
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004475 str r0, [r1, #SP_TDR]
4476SP_loop2:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004477 ldr r0, [r1, #SP_SR]
4478 tst r0, #SP_TDRE
4479 beq SP_loop2
4480
4481 ldr r0, [r1, #SP_RDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004482SP_loop3:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004483 ldr r0, [r1, #SP_SR]
4484 tst r0, #SP_RDRF
4485 beq SP_loop3
4486
4487 ldr r0, [r1, #SP_RDR]
4488 and r0, r0, #255
4489 bx lr
4490.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004491
Linus Torvalds1da177e2005-04-16 15:20:36 -07004492.func NVRAM_Xfer, NVRAM_XFER
4493 /* r0 = dest address */
4494 /* r1 = not used */
4495 /* r2 = src address within NVRAM */
4496 /* r3 = length */
4497NVRAM_XFER:
4498 stmdb sp!, {r4, r5, lr}
4499 mov r5, r0 /* save r0 (dest address) */
4500 mov r4, r3 /* save r3 (length) */
4501 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4502 and r0, r0, #8
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004503 add r0, r0, #NVRAM_CMD_READ
Linus Torvalds1da177e2005-04-16 15:20:36 -07004504 ldr r1, =NVRAM_SCRATCH
4505 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4506 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004507_local1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004508 bl NVRAM_INIT
4509 tst r0, #NVRAM_SR_RDY
4510 bne _local1
4511 mov r0, #20
4512 bl DELAY9
4513 mov r2, r4 /* length */
4514 mov r1, r5 /* dest address */
4515 mov r0, #2 /* bytes to transfer in command */
4516 bl NVRAM_XFER2
4517 ldmia sp!, {r4, r5, lr}
4518 bx lr
4519.endfunc
4520
4521.func NVRAM_Xfer2, NVRAM_XFER2
4522NVRAM_XFER2:
4523 stmdb sp!, {r4, r5, r6, lr}
4524 ldr r4, =SP_BASE
4525 mov r3, #0
4526 cmp r0, #0
4527 bls _local2
4528 ldr r5, =NVRAM_SCRATCH
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004529_local4:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004530 ldrb r6, [r5, r3]
4531 str r6, [r4, #SP_TDR]
4532_local3:
4533 ldr r6, [r4, #SP_SR]
4534 tst r6, #SP_TDRE
4535 beq _local3
4536 add r3, r3, #1
4537 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4538 blo _local4
4539_local2:
4540 mov r3, #SPI_8CLOCKS
4541 str r3, [r4, #SP_TDR]
4542 ldr r0, [r4, #SP_RDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004543_local5:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004544 ldr r0, [r4, #SP_SR]
4545 tst r0, #SP_RDRF
4546 beq _local5
4547 ldr r0, [r4, #SP_RDR] /* what's this byte? It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
4548 mov r0, #0
4549 cmp r2, #0 /* r2 is # of bytes to copy in */
4550 bls _local6
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004551_local7:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004552 ldr r5, [r4, #SP_SR]
4553 tst r5, #SP_TDRE
4554 beq _local7
4555 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004556_local8:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004557 ldr r5, [r4, #SP_SR]
4558 tst r5, #SP_RDRF
4559 beq _local8
4560 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4561 strb r5, [r1], #1 /* postindexed */
4562 add r0, r0, #1
4563 cmp r0, r2
4564 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4565_local6:
4566 mov r0, #200
4567 bl DELAY9
4568 ldmia sp!, {r4, r5, r6, lr}
4569 bx lr
4570#endif