blob: 4374079dfc2a031d6faa0a2819c69e1b9c49885f [file] [log] [blame]
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>
Alexey Dobriyana6b7a402011-06-06 10:43:46 +000043#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#include <linux/ptrace.h>
47#include <linux/slab.h>
48#include <linux/string.h>
49#include <linux/ctype.h>
50#include <linux/timer.h>
Harvey Harrison9a6ab762008-05-16 11:20:25 -070051#include <asm/byteorder.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#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 {
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300442 void *card; /* Bus dependent structure varies for PCcard */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 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));
Joe Perches41de8d42012-01-29 13:47:52 +00001535 if (!dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536 return NULL;
Joe Perches41de8d42012-01-29 13:47:52 +00001537
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538 if (dev_alloc_name(dev, dev->name) < 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001539 printk(KERN_ERR "atmel: Couldn't get name!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 goto err_out_free;
1541 }
1542
1543 priv = netdev_priv(dev);
1544 priv->dev = dev;
1545 priv->sys_dev = sys_dev;
1546 priv->present_callback = card_present;
1547 priv->card = card;
1548 priv->firmware = NULL;
1549 priv->firmware_id[0] = '\0';
1550 priv->firmware_type = fw_type;
1551 if (firmware) /* module parameter */
1552 strcpy(priv->firmware_id, firmware);
1553 priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
1554 priv->station_state = STATION_STATE_DOWN;
1555 priv->do_rx_crc = 0;
1556 /* For PCMCIA cards, some chips need CRC, some don't
1557 so we have to probe. */
1558 if (priv->bus_type == BUS_TYPE_PCCARD) {
1559 priv->probe_crc = 1;
1560 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
1561 } else
1562 priv->probe_crc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563 priv->last_qual = jiffies;
1564 priv->last_beacon_timestamp = 0;
1565 memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
1566 memset(priv->BSSID, 0, 6);
1567 priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
1568 priv->station_was_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001569
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570 priv->last_survey = jiffies;
1571 priv->preamble = LONG_PREAMBLE;
1572 priv->operating_mode = IW_MODE_INFRA;
1573 priv->connect_to_any_BSS = 0;
1574 priv->config_reg_domain = 0;
1575 priv->reg_domain = 0;
1576 priv->tx_rate = 3;
1577 priv->auto_tx_rate = 1;
1578 priv->channel = 4;
1579 priv->power_mode = 0;
1580 priv->SSID[0] = '\0';
1581 priv->SSID_size = 0;
1582 priv->new_SSID_size = 0;
1583 priv->frag_threshold = 2346;
1584 priv->rts_threshold = 2347;
1585 priv->short_retry = 7;
1586 priv->long_retry = 4;
1587
1588 priv->wep_is_on = 0;
1589 priv->default_key = 0;
1590 priv->encryption_level = 0;
1591 priv->exclude_unencrypted = 0;
1592 priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1593 priv->use_wpa = 0;
1594 memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
1595 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1596
1597 priv->default_beacon_period = priv->beacon_period = 100;
1598 priv->listen_interval = 1;
1599
1600 init_timer(&priv->management_timer);
1601 spin_lock_init(&priv->irqlock);
1602 spin_lock_init(&priv->timerlock);
1603 priv->management_timer.function = atmel_management_timer;
1604 priv->management_timer.data = (unsigned long) dev;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001605
Stephen Hemminger824f1df2009-03-20 19:36:27 +00001606 dev->netdev_ops = &atmel_netdev_ops;
1607 dev->wireless_handlers = &atmel_handler_def;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608 dev->irq = irq;
1609 dev->base_addr = port;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001610
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611 SET_NETDEV_DEV(dev, sys_dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001612
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001613 if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001614 printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615 goto err_out_free;
1616 }
1617
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001618 if (!request_region(dev->base_addr, 32,
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001619 priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 goto err_out_irq;
1621 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001622
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623 if (register_netdev(dev))
1624 goto err_out_res;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001625
John Daiker8830cb62009-03-08 22:18:35 -07001626 if (!probe_atmel_card(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001627 unregister_netdev(dev);
1628 goto err_out_res;
1629 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001630
Linus Torvalds1da177e2005-04-16 15:20:36 -07001631 netif_carrier_off(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001632
Christophe Lucas5bc4c362005-11-12 21:58:53 +03001633 ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
1634 if (!ent)
1635 printk(KERN_WARNING "atmel: unable to create /proc entry.\n");
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001636
Johannes Berge1749612008-10-27 15:59:26 -07001637 printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
1638 dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001639
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 return dev;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001641
1642err_out_res:
John Daiker8830cb62009-03-08 22:18:35 -07001643 release_region(dev->base_addr, 32);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001644err_out_irq:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645 free_irq(dev->irq, dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001646err_out_free:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647 free_netdev(dev);
1648 return NULL;
1649}
1650
1651EXPORT_SYMBOL(init_atmel_card);
1652
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001653void stop_atmel_card(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001654{
1655 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001656
Linus Torvalds1da177e2005-04-16 15:20:36 -07001657 /* put a brick on it... */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001658 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659 atmel_write16(dev, GCR, 0x0060);
1660 atmel_write16(dev, GCR, 0x0040);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001661
Linus Torvalds1da177e2005-04-16 15:20:36 -07001662 del_timer_sync(&priv->management_timer);
1663 unregister_netdev(dev);
1664 remove_proc_entry("driver/atmel", NULL);
1665 free_irq(dev->irq, dev);
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001666 kfree(priv->firmware);
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001667 release_region(dev->base_addr, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001668 free_netdev(dev);
1669}
1670
1671EXPORT_SYMBOL(stop_atmel_card);
1672
1673static int atmel_set_essid(struct net_device *dev,
1674 struct iw_request_info *info,
1675 struct iw_point *dwrq,
1676 char *extra)
1677{
1678 struct atmel_private *priv = netdev_priv(dev);
1679
1680 /* Check if we asked for `any' */
John Daiker8830cb62009-03-08 22:18:35 -07001681 if (dwrq->flags == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001682 priv->connect_to_any_BSS = 1;
1683 } else {
1684 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1685
1686 priv->connect_to_any_BSS = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001687
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688 /* Check the size of the string */
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07001689 if (dwrq->length > MAX_SSID_LENGTH)
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001690 return -E2BIG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 if (index != 0)
1692 return -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001693
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07001694 memcpy(priv->new_SSID, extra, dwrq->length);
1695 priv->new_SSID_size = dwrq->length;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696 }
1697
1698 return -EINPROGRESS;
1699}
1700
1701static int atmel_get_essid(struct net_device *dev,
1702 struct iw_request_info *info,
1703 struct iw_point *dwrq,
1704 char *extra)
1705{
1706 struct atmel_private *priv = netdev_priv(dev);
1707
1708 /* Get the current SSID */
1709 if (priv->new_SSID_size != 0) {
1710 memcpy(extra, priv->new_SSID, priv->new_SSID_size);
Dan Williamsd6a13a22006-01-12 15:00:58 -05001711 dwrq->length = priv->new_SSID_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001712 } else {
1713 memcpy(extra, priv->SSID, priv->SSID_size);
Dan Williamsd6a13a22006-01-12 15:00:58 -05001714 dwrq->length = priv->SSID_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001716
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717 dwrq->flags = !priv->connect_to_any_BSS; /* active */
1718
1719 return 0;
1720}
1721
1722static int atmel_get_wap(struct net_device *dev,
1723 struct iw_request_info *info,
1724 struct sockaddr *awrq,
1725 char *extra)
1726{
1727 struct atmel_private *priv = netdev_priv(dev);
1728 memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
1729 awrq->sa_family = ARPHRD_ETHER;
1730
1731 return 0;
1732}
1733
1734static int atmel_set_encode(struct net_device *dev,
1735 struct iw_request_info *info,
1736 struct iw_point *dwrq,
1737 char *extra)
1738{
1739 struct atmel_private *priv = netdev_priv(dev);
1740
1741 /* Basic checking: do we have a key to set ?
1742 * Note : with the new API, it's impossible to get a NULL pointer.
1743 * Therefore, we need to check a key size == 0 instead.
1744 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
1745 * when no key is present (only change flags), but older versions
1746 * don't do it. - Jean II */
1747 if (dwrq->length > 0) {
1748 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
1749 int current_index = priv->default_key;
1750 /* Check the size of the key */
1751 if (dwrq->length > 13) {
1752 return -EINVAL;
1753 }
1754 /* Check the index (none -> use current) */
1755 if (index < 0 || index >= 4)
1756 index = current_index;
1757 else
1758 priv->default_key = index;
1759 /* Set the length */
1760 if (dwrq->length > 5)
1761 priv->wep_key_len[index] = 13;
1762 else
1763 if (dwrq->length > 0)
1764 priv->wep_key_len[index] = 5;
1765 else
1766 /* Disable the key */
1767 priv->wep_key_len[index] = 0;
1768 /* Check if the key is not marked as invalid */
Dmitry Torokhov5c877fe2006-10-08 00:14:30 -04001769 if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770 /* Cleanup */
1771 memset(priv->wep_keys[index], 0, 13);
1772 /* Copy the key in the driver */
1773 memcpy(priv->wep_keys[index], extra, dwrq->length);
1774 }
1775 /* WE specify that if a valid key is set, encryption
1776 * should be enabled (user may turn it off later)
1777 * This is also how "iwconfig ethX key on" works */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001778 if (index == current_index &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779 priv->wep_key_len[index] > 0) {
1780 priv->wep_is_on = 1;
1781 priv->exclude_unencrypted = 1;
1782 if (priv->wep_key_len[index] > 5) {
Dan Williams9a6301c2006-01-10 00:56:11 -05001783 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001784 priv->encryption_level = 2;
1785 } else {
Dan Williams9a6301c2006-01-10 00:56:11 -05001786 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787 priv->encryption_level = 1;
1788 }
1789 }
1790 } else {
1791 /* Do we want to just set the transmit key index ? */
1792 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001793 if (index >= 0 && index < 4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794 priv->default_key = index;
1795 } else
1796 /* Don't complain if only change the mode */
Jeff Garzik93a3b602007-11-23 21:50:20 -05001797 if (!(dwrq->flags & IW_ENCODE_MODE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 }
1800 /* Read the flags */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001801 if (dwrq->flags & IW_ENCODE_DISABLED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 priv->wep_is_on = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001803 priv->encryption_level = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1805 } else {
1806 priv->wep_is_on = 1;
1807 if (priv->wep_key_len[priv->default_key] > 5) {
1808 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1809 priv->encryption_level = 2;
1810 } else {
1811 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1812 priv->encryption_level = 1;
1813 }
1814 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001815 if (dwrq->flags & IW_ENCODE_RESTRICTED)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001816 priv->exclude_unencrypted = 1;
John Daiker8830cb62009-03-08 22:18:35 -07001817 if (dwrq->flags & IW_ENCODE_OPEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 priv->exclude_unencrypted = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001819
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820 return -EINPROGRESS; /* Call commit handler */
1821}
1822
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823static int atmel_get_encode(struct net_device *dev,
1824 struct iw_request_info *info,
1825 struct iw_point *dwrq,
1826 char *extra)
1827{
1828 struct atmel_private *priv = netdev_priv(dev);
1829 int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001830
Linus Torvalds1da177e2005-04-16 15:20:36 -07001831 if (!priv->wep_is_on)
1832 dwrq->flags = IW_ENCODE_DISABLED;
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00001833 else {
1834 if (priv->exclude_unencrypted)
1835 dwrq->flags = IW_ENCODE_RESTRICTED;
1836 else
1837 dwrq->flags = IW_ENCODE_OPEN;
1838 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 /* Which key do we want ? -1 -> tx index */
1840 if (index < 0 || index >= 4)
1841 index = priv->default_key;
1842 dwrq->flags |= index + 1;
1843 /* Copy the key to the user buffer */
1844 dwrq->length = priv->wep_key_len[index];
1845 if (dwrq->length > 16) {
John Daiker8830cb62009-03-08 22:18:35 -07001846 dwrq->length = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 } else {
1848 memset(extra, 0, 16);
1849 memcpy(extra, priv->wep_keys[index], dwrq->length);
1850 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03001851
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 return 0;
1853}
1854
Dan Williams9a6301c2006-01-10 00:56:11 -05001855static int atmel_set_encodeext(struct net_device *dev,
1856 struct iw_request_info *info,
1857 union iwreq_data *wrqu,
1858 char *extra)
1859{
1860 struct atmel_private *priv = netdev_priv(dev);
1861 struct iw_point *encoding = &wrqu->encoding;
1862 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
Dan Williams0d467502006-02-05 17:52:21 -05001863 int idx, key_len, alg = ext->alg, set_key = 1;
Dan Williams9a6301c2006-01-10 00:56:11 -05001864
1865 /* Determine and validate the key index */
1866 idx = encoding->flags & IW_ENCODE_INDEX;
1867 if (idx) {
Johannes Berg2c7060022008-10-30 22:09:54 +01001868 if (idx < 1 || idx > 4)
Dan Williams9a6301c2006-01-10 00:56:11 -05001869 return -EINVAL;
1870 idx--;
1871 } else
1872 idx = priv->default_key;
1873
Dan Williams0d467502006-02-05 17:52:21 -05001874 if (encoding->flags & IW_ENCODE_DISABLED)
1875 alg = IW_ENCODE_ALG_NONE;
1876
1877 if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
1878 priv->default_key = idx;
1879 set_key = ext->key_len > 0 ? 1 : 0;
Dan Williams9a6301c2006-01-10 00:56:11 -05001880 }
1881
Dan Williams0d467502006-02-05 17:52:21 -05001882 if (set_key) {
1883 /* Set the requested key first */
1884 switch (alg) {
1885 case IW_ENCODE_ALG_NONE:
1886 priv->wep_is_on = 0;
1887 priv->encryption_level = 0;
1888 priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
1889 break;
1890 case IW_ENCODE_ALG_WEP:
1891 if (ext->key_len > 5) {
1892 priv->wep_key_len[idx] = 13;
1893 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
1894 priv->encryption_level = 2;
1895 } else if (ext->key_len > 0) {
1896 priv->wep_key_len[idx] = 5;
1897 priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
1898 priv->encryption_level = 1;
1899 } else {
1900 return -EINVAL;
1901 }
1902 priv->wep_is_on = 1;
1903 memset(priv->wep_keys[idx], 0, 13);
1904 key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
1905 memcpy(priv->wep_keys[idx], ext->key, key_len);
1906 break;
1907 default:
Dan Williams9a6301c2006-01-10 00:56:11 -05001908 return -EINVAL;
1909 }
Dan Williams9a6301c2006-01-10 00:56:11 -05001910 }
1911
1912 return -EINPROGRESS;
1913}
1914
1915static int atmel_get_encodeext(struct net_device *dev,
1916 struct iw_request_info *info,
1917 union iwreq_data *wrqu,
1918 char *extra)
1919{
1920 struct atmel_private *priv = netdev_priv(dev);
1921 struct iw_point *encoding = &wrqu->encoding;
1922 struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
1923 int idx, max_key_len;
1924
1925 max_key_len = encoding->length - sizeof(*ext);
1926 if (max_key_len < 0)
1927 return -EINVAL;
1928
1929 idx = encoding->flags & IW_ENCODE_INDEX;
1930 if (idx) {
Johannes Berg2c7060022008-10-30 22:09:54 +01001931 if (idx < 1 || idx > 4)
Dan Williams9a6301c2006-01-10 00:56:11 -05001932 return -EINVAL;
1933 idx--;
1934 } else
1935 idx = priv->default_key;
1936
1937 encoding->flags = idx + 1;
1938 memset(ext, 0, sizeof(*ext));
Dmitry Torokhov5c877fe2006-10-08 00:14:30 -04001939
Dan Williams9a6301c2006-01-10 00:56:11 -05001940 if (!priv->wep_is_on) {
1941 ext->alg = IW_ENCODE_ALG_NONE;
1942 ext->key_len = 0;
1943 encoding->flags |= IW_ENCODE_DISABLED;
1944 } else {
1945 if (priv->encryption_level > 0)
1946 ext->alg = IW_ENCODE_ALG_WEP;
1947 else
1948 return -EINVAL;
1949
1950 ext->key_len = priv->wep_key_len[idx];
1951 memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
1952 encoding->flags |= IW_ENCODE_ENABLED;
1953 }
1954
1955 return 0;
1956}
1957
1958static int atmel_set_auth(struct net_device *dev,
1959 struct iw_request_info *info,
1960 union iwreq_data *wrqu, char *extra)
1961{
1962 struct atmel_private *priv = netdev_priv(dev);
1963 struct iw_param *param = &wrqu->param;
1964
1965 switch (param->flags & IW_AUTH_INDEX) {
1966 case IW_AUTH_WPA_VERSION:
1967 case IW_AUTH_CIPHER_PAIRWISE:
1968 case IW_AUTH_CIPHER_GROUP:
1969 case IW_AUTH_KEY_MGMT:
1970 case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1971 case IW_AUTH_PRIVACY_INVOKED:
1972 /*
1973 * atmel does not use these parameters
1974 */
1975 break;
1976
1977 case IW_AUTH_DROP_UNENCRYPTED:
1978 priv->exclude_unencrypted = param->value ? 1 : 0;
1979 break;
1980
1981 case IW_AUTH_80211_AUTH_ALG: {
1982 if (param->value & IW_AUTH_ALG_SHARED_KEY) {
1983 priv->exclude_unencrypted = 1;
1984 } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
1985 priv->exclude_unencrypted = 0;
1986 } else
1987 return -EINVAL;
1988 break;
1989 }
1990
1991 case IW_AUTH_WPA_ENABLED:
1992 /* Silently accept disable of WPA */
1993 if (param->value > 0)
1994 return -EOPNOTSUPP;
1995 break;
1996
1997 default:
1998 return -EOPNOTSUPP;
1999 }
2000 return -EINPROGRESS;
2001}
2002
2003static int atmel_get_auth(struct net_device *dev,
2004 struct iw_request_info *info,
2005 union iwreq_data *wrqu, char *extra)
2006{
2007 struct atmel_private *priv = netdev_priv(dev);
2008 struct iw_param *param = &wrqu->param;
2009
2010 switch (param->flags & IW_AUTH_INDEX) {
2011 case IW_AUTH_DROP_UNENCRYPTED:
2012 param->value = priv->exclude_unencrypted;
2013 break;
2014
2015 case IW_AUTH_80211_AUTH_ALG:
2016 if (priv->exclude_unencrypted == 1)
2017 param->value = IW_AUTH_ALG_SHARED_KEY;
2018 else
2019 param->value = IW_AUTH_ALG_OPEN_SYSTEM;
2020 break;
2021
2022 case IW_AUTH_WPA_ENABLED:
2023 param->value = 0;
2024 break;
2025
2026 default:
2027 return -EOPNOTSUPP;
2028 }
2029 return 0;
2030}
2031
2032
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033static int atmel_get_name(struct net_device *dev,
2034 struct iw_request_info *info,
2035 char *cwrq,
2036 char *extra)
2037{
2038 strcpy(cwrq, "IEEE 802.11-DS");
2039 return 0;
2040}
2041
2042static int atmel_set_rate(struct net_device *dev,
2043 struct iw_request_info *info,
2044 struct iw_param *vwrq,
2045 char *extra)
2046{
2047 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002048
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049 if (vwrq->fixed == 0) {
2050 priv->tx_rate = 3;
2051 priv->auto_tx_rate = 1;
2052 } else {
2053 priv->auto_tx_rate = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002054
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055 /* Which type of value ? */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002056 if ((vwrq->value < 4) && (vwrq->value >= 0)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057 /* Setting by rate index */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002058 priv->tx_rate = vwrq->value;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059 } else {
2060 /* Setting by frequency value */
2061 switch (vwrq->value) {
John Daiker8830cb62009-03-08 22:18:35 -07002062 case 1000000:
2063 priv->tx_rate = 0;
2064 break;
2065 case 2000000:
2066 priv->tx_rate = 1;
2067 break;
2068 case 5500000:
2069 priv->tx_rate = 2;
2070 break;
2071 case 11000000:
2072 priv->tx_rate = 3;
2073 break;
2074 default:
2075 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076 }
2077 }
2078 }
2079
2080 return -EINPROGRESS;
2081}
2082
2083static int atmel_set_mode(struct net_device *dev,
2084 struct iw_request_info *info,
2085 __u32 *uwrq,
2086 char *extra)
2087{
2088 struct atmel_private *priv = netdev_priv(dev);
2089
2090 if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
2091 return -EINVAL;
2092
2093 priv->operating_mode = *uwrq;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002094 return -EINPROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002095}
2096
2097static int atmel_get_mode(struct net_device *dev,
2098 struct iw_request_info *info,
2099 __u32 *uwrq,
2100 char *extra)
2101{
2102 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002103
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 *uwrq = priv->operating_mode;
2105 return 0;
2106}
2107
2108static int atmel_get_rate(struct net_device *dev,
2109 struct iw_request_info *info,
2110 struct iw_param *vwrq,
2111 char *extra)
2112{
2113 struct atmel_private *priv = netdev_priv(dev);
2114
2115 if (priv->auto_tx_rate) {
2116 vwrq->fixed = 0;
2117 vwrq->value = 11000000;
2118 } else {
2119 vwrq->fixed = 1;
John Daiker8830cb62009-03-08 22:18:35 -07002120 switch (priv->tx_rate) {
2121 case 0:
2122 vwrq->value = 1000000;
2123 break;
2124 case 1:
2125 vwrq->value = 2000000;
2126 break;
2127 case 2:
2128 vwrq->value = 5500000;
2129 break;
2130 case 3:
2131 vwrq->value = 11000000;
2132 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133 }
2134 }
2135 return 0;
2136}
2137
2138static int atmel_set_power(struct net_device *dev,
2139 struct iw_request_info *info,
2140 struct iw_param *vwrq,
2141 char *extra)
2142{
2143 struct atmel_private *priv = netdev_priv(dev);
2144 priv->power_mode = vwrq->disabled ? 0 : 1;
2145 return -EINPROGRESS;
2146}
2147
2148static int atmel_get_power(struct net_device *dev,
2149 struct iw_request_info *info,
2150 struct iw_param *vwrq,
2151 char *extra)
2152{
2153 struct atmel_private *priv = netdev_priv(dev);
2154 vwrq->disabled = priv->power_mode ? 0 : 1;
2155 vwrq->flags = IW_POWER_ON;
2156 return 0;
2157}
2158
2159static int atmel_set_retry(struct net_device *dev,
2160 struct iw_request_info *info,
2161 struct iw_param *vwrq,
2162 char *extra)
2163{
2164 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002165
2166 if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002167 if (vwrq->flags & IW_RETRY_LONG)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168 priv->long_retry = vwrq->value;
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002169 else if (vwrq->flags & IW_RETRY_SHORT)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170 priv->short_retry = vwrq->value;
2171 else {
2172 /* No modifier : set both */
2173 priv->long_retry = vwrq->value;
2174 priv->short_retry = vwrq->value;
2175 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002176 return -EINPROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002178
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179 return -EINVAL;
2180}
2181
2182static int atmel_get_retry(struct net_device *dev,
2183 struct iw_request_info *info,
2184 struct iw_param *vwrq,
2185 char *extra)
2186{
2187 struct atmel_private *priv = netdev_priv(dev);
2188
2189 vwrq->disabled = 0; /* Can't be disabled */
2190
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002191 /* Note : by default, display the short retry number */
2192 if (vwrq->flags & IW_RETRY_LONG) {
2193 vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194 vwrq->value = priv->long_retry;
2195 } else {
2196 vwrq->flags = IW_RETRY_LIMIT;
2197 vwrq->value = priv->short_retry;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002198 if (priv->long_retry != priv->short_retry)
Jean Tourrilhes6a484db2006-08-29 17:59:03 -07002199 vwrq->flags |= IW_RETRY_SHORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200 }
2201
2202 return 0;
2203}
2204
2205static int atmel_set_rts(struct net_device *dev,
2206 struct iw_request_info *info,
2207 struct iw_param *vwrq,
2208 char *extra)
2209{
2210 struct atmel_private *priv = netdev_priv(dev);
2211 int rthr = vwrq->value;
2212
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002213 if (vwrq->disabled)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002214 rthr = 2347;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002215 if ((rthr < 0) || (rthr > 2347)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 return -EINVAL;
2217 }
2218 priv->rts_threshold = rthr;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002219
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220 return -EINPROGRESS; /* Call commit handler */
2221}
2222
2223static int atmel_get_rts(struct net_device *dev,
2224 struct iw_request_info *info,
2225 struct iw_param *vwrq,
2226 char *extra)
2227{
2228 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002229
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230 vwrq->value = priv->rts_threshold;
2231 vwrq->disabled = (vwrq->value >= 2347);
2232 vwrq->fixed = 1;
2233
2234 return 0;
2235}
2236
2237static int atmel_set_frag(struct net_device *dev,
2238 struct iw_request_info *info,
2239 struct iw_param *vwrq,
2240 char *extra)
2241{
2242 struct atmel_private *priv = netdev_priv(dev);
2243 int fthr = vwrq->value;
2244
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002245 if (vwrq->disabled)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246 fthr = 2346;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002247 if ((fthr < 256) || (fthr > 2346)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248 return -EINVAL;
2249 }
2250 fthr &= ~0x1; /* Get an even value - is it really needed ??? */
2251 priv->frag_threshold = fthr;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002252
Linus Torvalds1da177e2005-04-16 15:20:36 -07002253 return -EINPROGRESS; /* Call commit handler */
2254}
2255
2256static int atmel_get_frag(struct net_device *dev,
2257 struct iw_request_info *info,
2258 struct iw_param *vwrq,
2259 char *extra)
2260{
2261 struct atmel_private *priv = netdev_priv(dev);
2262
2263 vwrq->value = priv->frag_threshold;
2264 vwrq->disabled = (vwrq->value >= 2346);
2265 vwrq->fixed = 1;
2266
2267 return 0;
2268}
2269
Linus Torvalds1da177e2005-04-16 15:20:36 -07002270static int atmel_set_freq(struct net_device *dev,
2271 struct iw_request_info *info,
2272 struct iw_freq *fwrq,
2273 char *extra)
2274{
2275 struct atmel_private *priv = netdev_priv(dev);
2276 int rc = -EINPROGRESS; /* Call commit handler */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002277
Linus Torvalds1da177e2005-04-16 15:20:36 -07002278 /* If setting by frequency, convert to a channel */
David Kilroy9ee677c2008-12-23 14:03:38 +00002279 if (fwrq->e == 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280 int f = fwrq->m / 100000;
David Kilroy9ee677c2008-12-23 14:03:38 +00002281
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282 /* Hack to fall through... */
2283 fwrq->e = 0;
David Kilroy9ee677c2008-12-23 14:03:38 +00002284 fwrq->m = ieee80211_freq_to_dsss_chan(f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002285 }
2286 /* Setting by channel number */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002287 if ((fwrq->m > 1000) || (fwrq->e > 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288 rc = -EOPNOTSUPP;
2289 else {
2290 int channel = fwrq->m;
2291 if (atmel_validate_channel(priv, channel) == 0) {
2292 priv->channel = channel;
2293 } else {
2294 rc = -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002295 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002296 }
2297 return rc;
2298}
2299
2300static int atmel_get_freq(struct net_device *dev,
2301 struct iw_request_info *info,
2302 struct iw_freq *fwrq,
2303 char *extra)
2304{
2305 struct atmel_private *priv = netdev_priv(dev);
2306
2307 fwrq->m = priv->channel;
2308 fwrq->e = 0;
2309 return 0;
2310}
2311
2312static int atmel_set_scan(struct net_device *dev,
2313 struct iw_request_info *info,
David Kilroy9930cce2008-09-13 12:22:05 +01002314 struct iw_point *dwrq,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315 char *extra)
2316{
2317 struct atmel_private *priv = netdev_priv(dev);
2318 unsigned long flags;
2319
2320 /* Note : you may have realised that, as this is a SET operation,
2321 * this is privileged and therefore a normal user can't
2322 * perform scanning.
2323 * This is not an error, while the device perform scanning,
2324 * traffic doesn't flow, so it's a perfect DoS...
2325 * Jean II */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002326
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327 if (priv->station_state == STATION_STATE_DOWN)
2328 return -EAGAIN;
2329
2330 /* Timeout old surveys. */
S.Çağlar Onur6e33e302008-02-14 17:36:49 +02002331 if (time_after(jiffies, priv->last_survey + 20 * HZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002332 priv->site_survey_state = SITE_SURVEY_IDLE;
2333 priv->last_survey = jiffies;
2334
2335 /* Initiate a scan command */
2336 if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
2337 return -EBUSY;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002338
Linus Torvalds1da177e2005-04-16 15:20:36 -07002339 del_timer_sync(&priv->management_timer);
2340 spin_lock_irqsave(&priv->irqlock, flags);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002341
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342 priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
2343 priv->fast_scan = 0;
2344 atmel_scan(priv, 0);
2345 spin_unlock_irqrestore(&priv->irqlock, flags);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002346
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347 return 0;
2348}
2349
2350static int atmel_get_scan(struct net_device *dev,
2351 struct iw_request_info *info,
2352 struct iw_point *dwrq,
2353 char *extra)
2354{
2355 struct atmel_private *priv = netdev_priv(dev);
2356 int i;
2357 char *current_ev = extra;
2358 struct iw_event iwe;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002359
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360 if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
2361 return -EAGAIN;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002362
2363 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364 iwe.cmd = SIOCGIWAP;
2365 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
2366 memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
David S. Millerccc58052008-06-16 18:50:49 -07002367 current_ev = iwe_stream_add_event(info, current_ev,
2368 extra + IW_SCAN_MAX_DATA,
2369 &iwe, IW_EV_ADDR_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370
2371 iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
2372 if (iwe.u.data.length > 32)
2373 iwe.u.data.length = 32;
2374 iwe.cmd = SIOCGIWESSID;
2375 iwe.u.data.flags = 1;
David S. Millerccc58052008-06-16 18:50:49 -07002376 current_ev = iwe_stream_add_point(info, current_ev,
2377 extra + IW_SCAN_MAX_DATA,
2378 &iwe, priv->BSSinfo[i].SSID);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002379
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380 iwe.cmd = SIOCGIWMODE;
2381 iwe.u.mode = priv->BSSinfo[i].BSStype;
David S. Millerccc58052008-06-16 18:50:49 -07002382 current_ev = iwe_stream_add_event(info, current_ev,
2383 extra + IW_SCAN_MAX_DATA,
2384 &iwe, IW_EV_UINT_LEN);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002385
Linus Torvalds1da177e2005-04-16 15:20:36 -07002386 iwe.cmd = SIOCGIWFREQ;
2387 iwe.u.freq.m = priv->BSSinfo[i].channel;
2388 iwe.u.freq.e = 0;
David S. Millerccc58052008-06-16 18:50:49 -07002389 current_ev = iwe_stream_add_event(info, current_ev,
2390 extra + IW_SCAN_MAX_DATA,
2391 &iwe, IW_EV_FREQ_LEN);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002392
Holden Karau3b31dc32006-10-10 14:45:33 -07002393 /* Add quality statistics */
2394 iwe.cmd = IWEVQUAL;
2395 iwe.u.qual.level = priv->BSSinfo[i].RSSI;
2396 iwe.u.qual.qual = iwe.u.qual.level;
2397 /* iwe.u.qual.noise = SOMETHING */
David S. Millerccc58052008-06-16 18:50:49 -07002398 current_ev = iwe_stream_add_event(info, current_ev,
2399 extra + IW_SCAN_MAX_DATA,
2400 &iwe, IW_EV_QUAL_LEN);
Holden Karau3b31dc32006-10-10 14:45:33 -07002401
2402
Linus Torvalds1da177e2005-04-16 15:20:36 -07002403 iwe.cmd = SIOCGIWENCODE;
2404 if (priv->BSSinfo[i].UsingWEP)
2405 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2406 else
2407 iwe.u.data.flags = IW_ENCODE_DISABLED;
2408 iwe.u.data.length = 0;
David S. Millerccc58052008-06-16 18:50:49 -07002409 current_ev = iwe_stream_add_point(info, current_ev,
2410 extra + IW_SCAN_MAX_DATA,
2411 &iwe, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412 }
2413
2414 /* Length of data */
2415 dwrq->length = (current_ev - extra);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002416 dwrq->flags = 0;
2417
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418 return 0;
2419}
2420
2421static int atmel_get_range(struct net_device *dev,
2422 struct iw_request_info *info,
2423 struct iw_point *dwrq,
2424 char *extra)
2425{
2426 struct atmel_private *priv = netdev_priv(dev);
2427 struct iw_range *range = (struct iw_range *) extra;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002428 int k, i, j;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002429
2430 dwrq->length = sizeof(struct iw_range);
Alexey Dobriyanf36be622005-11-08 00:41:48 +03002431 memset(range, 0, sizeof(struct iw_range));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002432 range->min_nwid = 0x0000;
2433 range->max_nwid = 0x0000;
2434 range->num_channels = 0;
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002435 for (j = 0; j < ARRAY_SIZE(channel_table); j++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436 if (priv->reg_domain == channel_table[j].reg_domain) {
2437 range->num_channels = channel_table[j].max - channel_table[j].min + 1;
2438 break;
2439 }
2440 if (range->num_channels != 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002441 for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002442 range->freq[k].i = i; /* List index */
David Kilroy9ee677c2008-12-23 14:03:38 +00002443
2444 /* Values in MHz -> * 10^5 * 10 */
2445 range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
2446 100000);
2447 range->freq[k++].e = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002448 }
2449 range->num_frequency = k;
2450 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002451
Linus Torvalds1da177e2005-04-16 15:20:36 -07002452 range->max_qual.qual = 100;
2453 range->max_qual.level = 100;
2454 range->max_qual.noise = 0;
2455 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2456
2457 range->avg_qual.qual = 50;
2458 range->avg_qual.level = 50;
2459 range->avg_qual.noise = 0;
2460 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2461
2462 range->sensitivity = 0;
2463
2464 range->bitrate[0] = 1000000;
2465 range->bitrate[1] = 2000000;
2466 range->bitrate[2] = 5500000;
2467 range->bitrate[3] = 11000000;
2468 range->num_bitrates = 4;
2469
2470 range->min_rts = 0;
2471 range->max_rts = 2347;
2472 range->min_frag = 256;
2473 range->max_frag = 2346;
2474
2475 range->encoding_size[0] = 5;
2476 range->encoding_size[1] = 13;
2477 range->num_encoding_sizes = 2;
2478 range->max_encoding_tokens = 4;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002479
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480 range->pmp_flags = IW_POWER_ON;
2481 range->pmt_flags = IW_POWER_ON;
2482 range->pm_capa = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002483
Linus Torvalds1da177e2005-04-16 15:20:36 -07002484 range->we_version_source = WIRELESS_EXT;
2485 range->we_version_compiled = WIRELESS_EXT;
2486 range->retry_capa = IW_RETRY_LIMIT ;
2487 range->retry_flags = IW_RETRY_LIMIT;
2488 range->r_time_flags = 0;
2489 range->min_retry = 1;
2490 range->max_retry = 65535;
2491
2492 return 0;
2493}
2494
2495static int atmel_set_wap(struct net_device *dev,
2496 struct iw_request_info *info,
2497 struct sockaddr *awrq,
2498 char *extra)
2499{
2500 struct atmel_private *priv = netdev_priv(dev);
2501 int i;
Dan Williams9a6301c2006-01-10 00:56:11 -05002502 static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
2503 static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002504 unsigned long flags;
2505
2506 if (awrq->sa_family != ARPHRD_ETHER)
2507 return -EINVAL;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002508
Dan Williams9a6301c2006-01-10 00:56:11 -05002509 if (!memcmp(any, awrq->sa_data, 6) ||
2510 !memcmp(off, awrq->sa_data, 6)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002511 del_timer_sync(&priv->management_timer);
2512 spin_lock_irqsave(&priv->irqlock, flags);
2513 atmel_scan(priv, 1);
2514 spin_unlock_irqrestore(&priv->irqlock, flags);
2515 return 0;
2516 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002517
2518 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002519 if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
2520 if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
2521 return -EINVAL;
2522 } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
2523 return -EINVAL;
2524 } else {
2525 del_timer_sync(&priv->management_timer);
2526 spin_lock_irqsave(&priv->irqlock, flags);
2527 atmel_join_bss(priv, i);
2528 spin_unlock_irqrestore(&priv->irqlock, flags);
2529 return 0;
2530 }
2531 }
2532 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002533
Linus Torvalds1da177e2005-04-16 15:20:36 -07002534 return -EINVAL;
2535}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002536
Linus Torvalds1da177e2005-04-16 15:20:36 -07002537static int atmel_config_commit(struct net_device *dev,
2538 struct iw_request_info *info, /* NULL */
2539 void *zwrq, /* NULL */
2540 char *extra) /* NULL */
2541{
2542 return atmel_open(dev);
2543}
2544
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002545static const iw_handler atmel_handler[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -07002546{
2547 (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002548 (iw_handler) atmel_get_name, /* SIOCGIWNAME */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002549 (iw_handler) NULL, /* SIOCSIWNWID */
2550 (iw_handler) NULL, /* SIOCGIWNWID */
2551 (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
2552 (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
2553 (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
2554 (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002555 (iw_handler) NULL, /* SIOCSIWSENS */
2556 (iw_handler) NULL, /* SIOCGIWSENS */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002557 (iw_handler) NULL, /* SIOCSIWRANGE */
2558 (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
2559 (iw_handler) NULL, /* SIOCSIWPRIV */
2560 (iw_handler) NULL, /* SIOCGIWPRIV */
2561 (iw_handler) NULL, /* SIOCSIWSTATS */
2562 (iw_handler) NULL, /* SIOCGIWSTATS */
2563 (iw_handler) NULL, /* SIOCSIWSPY */
2564 (iw_handler) NULL, /* SIOCGIWSPY */
2565 (iw_handler) NULL, /* -- hole -- */
2566 (iw_handler) NULL, /* -- hole -- */
2567 (iw_handler) atmel_set_wap, /* SIOCSIWAP */
2568 (iw_handler) atmel_get_wap, /* SIOCGIWAP */
2569 (iw_handler) NULL, /* -- hole -- */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002570 (iw_handler) NULL, /* SIOCGIWAPLIST */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002571 (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
2572 (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
2573 (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
2574 (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002575 (iw_handler) NULL, /* SIOCSIWNICKN */
2576 (iw_handler) NULL, /* SIOCGIWNICKN */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577 (iw_handler) NULL, /* -- hole -- */
2578 (iw_handler) NULL, /* -- hole -- */
2579 (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
2580 (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
2581 (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
2582 (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
2583 (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
2584 (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002585 (iw_handler) NULL, /* SIOCSIWTXPOW */
2586 (iw_handler) NULL, /* SIOCGIWTXPOW */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002587 (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
2588 (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
2589 (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
2590 (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
2591 (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
2592 (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
Dan Williams9a6301c2006-01-10 00:56:11 -05002593 (iw_handler) NULL, /* -- hole -- */
2594 (iw_handler) NULL, /* -- hole -- */
2595 (iw_handler) NULL, /* SIOCSIWGENIE */
2596 (iw_handler) NULL, /* SIOCGIWGENIE */
2597 (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */
2598 (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */
2599 (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */
2600 (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */
2601 (iw_handler) NULL, /* SIOCSIWPMKSA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002602};
2603
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002604static const iw_handler atmel_private_handler[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -07002605{
2606 NULL, /* SIOCIWFIRSTPRIV */
2607};
2608
2609typedef struct atmel_priv_ioctl {
2610 char id[32];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002611 unsigned char __user *data;
2612 unsigned short len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002613} atmel_priv_ioctl;
2614
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002615#define ATMELFWL SIOCIWFIRSTPRIV
2616#define ATMELIDIFC ATMELFWL + 1
2617#define ATMELRD ATMELFWL + 2
2618#define ATMELMAGIC 0x51807
Linus Torvalds1da177e2005-04-16 15:20:36 -07002619#define REGDOMAINSZ 20
2620
2621static const struct iw_priv_args atmel_private_args[] = {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002622 {
2623 .cmd = ATMELFWL,
2624 .set_args = IW_PRIV_TYPE_BYTE
2625 | IW_PRIV_SIZE_FIXED
2626 | sizeof (atmel_priv_ioctl),
2627 .get_args = IW_PRIV_TYPE_NONE,
2628 .name = "atmelfwl"
2629 }, {
2630 .cmd = ATMELIDIFC,
2631 .set_args = IW_PRIV_TYPE_NONE,
2632 .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
2633 .name = "atmelidifc"
2634 }, {
2635 .cmd = ATMELRD,
2636 .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
2637 .get_args = IW_PRIV_TYPE_NONE,
2638 .name = "regdomain"
2639 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640};
2641
John Daiker8830cb62009-03-08 22:18:35 -07002642static const struct iw_handler_def atmel_handler_def = {
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002643 .num_standard = ARRAY_SIZE(atmel_handler),
2644 .num_private = ARRAY_SIZE(atmel_private_handler),
2645 .num_private_args = ARRAY_SIZE(atmel_private_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002646 .standard = (iw_handler *) atmel_handler,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002647 .private = (iw_handler *) atmel_private_handler,
Jean Tourrilhes72f98d32005-09-02 11:36:00 -07002648 .private_args = (struct iw_priv_args *) atmel_private_args,
2649 .get_wireless_stats = atmel_get_wireless_stats
Linus Torvalds1da177e2005-04-16 15:20:36 -07002650};
2651
2652static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2653{
2654 int i, rc = 0;
2655 struct atmel_private *priv = netdev_priv(dev);
2656 atmel_priv_ioctl com;
2657 struct iwreq *wrq = (struct iwreq *) rq;
2658 unsigned char *new_firmware;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002659 char domain[REGDOMAINSZ + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002660
2661 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662 case ATMELIDIFC:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002663 wrq->u.param.value = ATMELMAGIC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002664 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002665
Linus Torvalds1da177e2005-04-16 15:20:36 -07002666 case ATMELFWL:
2667 if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
2668 rc = -EFAULT;
2669 break;
2670 }
2671
2672 if (!capable(CAP_NET_ADMIN)) {
2673 rc = -EPERM;
2674 break;
2675 }
2676
2677 if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
2678 rc = -ENOMEM;
2679 break;
2680 }
2681
2682 if (copy_from_user(new_firmware, com.data, com.len)) {
2683 kfree(new_firmware);
2684 rc = -EFAULT;
2685 break;
2686 }
2687
Jesper Juhlb4558ea2005-10-28 16:53:13 -04002688 kfree(priv->firmware);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002689
Linus Torvalds1da177e2005-04-16 15:20:36 -07002690 priv->firmware = new_firmware;
2691 priv->firmware_length = com.len;
2692 strncpy(priv->firmware_id, com.id, 31);
2693 priv->firmware_id[31] = '\0';
2694 break;
2695
2696 case ATMELRD:
2697 if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
2698 rc = -EFAULT;
2699 break;
2700 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002701
Linus Torvalds1da177e2005-04-16 15:20:36 -07002702 if (!capable(CAP_NET_ADMIN)) {
2703 rc = -EPERM;
2704 break;
2705 }
2706
2707 domain[REGDOMAINSZ] = 0;
2708 rc = -EINVAL;
Dmitry Torokhovb4341132006-10-08 00:14:29 -04002709 for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002710 /* strcasecmp doesn't exist in the library */
2711 char *a = channel_table[i].name;
2712 char *b = domain;
2713 while (*a) {
2714 char c1 = *a++;
2715 char c2 = *b++;
2716 if (tolower(c1) != tolower(c2))
2717 break;
2718 }
2719 if (!*a && !*b) {
2720 priv->config_reg_domain = channel_table[i].reg_domain;
2721 rc = 0;
2722 }
2723 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002724
Linus Torvalds1da177e2005-04-16 15:20:36 -07002725 if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
2726 rc = atmel_open(dev);
2727 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002728
Linus Torvalds1da177e2005-04-16 15:20:36 -07002729 default:
2730 rc = -EOPNOTSUPP;
2731 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002732
Linus Torvalds1da177e2005-04-16 15:20:36 -07002733 return rc;
2734}
2735
2736struct auth_body {
Al Viro0e5ce1f2007-12-22 13:45:50 -05002737 __le16 alg;
2738 __le16 trans_seq;
2739 __le16 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002740 u8 el_id;
2741 u8 chall_text_len;
2742 u8 chall_text[253];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002743};
Linus Torvalds1da177e2005-04-16 15:20:36 -07002744
2745static void atmel_enter_state(struct atmel_private *priv, int new_state)
2746{
2747 int old_state = priv->station_state;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002748
Linus Torvalds1da177e2005-04-16 15:20:36 -07002749 if (new_state == old_state)
2750 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002751
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752 priv->station_state = new_state;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002753
Linus Torvalds1da177e2005-04-16 15:20:36 -07002754 if (new_state == STATION_STATE_READY) {
2755 netif_start_queue(priv->dev);
2756 netif_carrier_on(priv->dev);
2757 }
2758
2759 if (old_state == STATION_STATE_READY) {
2760 netif_carrier_off(priv->dev);
2761 if (netif_running(priv->dev))
2762 netif_stop_queue(priv->dev);
2763 priv->last_beacon_timestamp = 0;
2764 }
2765}
2766
2767static void atmel_scan(struct atmel_private *priv, int specific_ssid)
2768{
2769 struct {
2770 u8 BSSID[6];
2771 u8 SSID[MAX_SSID_LENGTH];
2772 u8 scan_type;
2773 u8 channel;
Al Viro0e5ce1f2007-12-22 13:45:50 -05002774 __le16 BSS_type;
2775 __le16 min_channel_time;
2776 __le16 max_channel_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002777 u8 options;
2778 u8 SSID_size;
2779 } cmd;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002780
Linus Torvalds1da177e2005-04-16 15:20:36 -07002781 memset(cmd.BSSID, 0xff, 6);
2782
2783 if (priv->fast_scan) {
2784 cmd.SSID_size = priv->SSID_size;
2785 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2786 cmd.min_channel_time = cpu_to_le16(10);
2787 cmd.max_channel_time = cpu_to_le16(50);
2788 } else {
2789 priv->BSS_list_entries = 0;
2790 cmd.SSID_size = 0;
2791 cmd.min_channel_time = cpu_to_le16(10);
2792 cmd.max_channel_time = cpu_to_le16(120);
2793 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002794
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795 cmd.options = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002796
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797 if (!specific_ssid)
2798 cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002799
2800 cmd.channel = (priv->channel & 0x7f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002801 cmd.scan_type = SCAN_TYPE_ACTIVE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002802 cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002803 BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002804
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805 atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
2806
2807 /* This must come after all hardware access to avoid being messed up
2808 by stuff happening in interrupt context after we leave STATE_DOWN */
2809 atmel_enter_state(priv, STATION_STATE_SCANNING);
2810}
2811
2812static void join(struct atmel_private *priv, int type)
2813{
2814 struct {
2815 u8 BSSID[6];
2816 u8 SSID[MAX_SSID_LENGTH];
2817 u8 BSS_type; /* this is a short in a scan command - weird */
2818 u8 channel;
Al Viro0e5ce1f2007-12-22 13:45:50 -05002819 __le16 timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002820 u8 SSID_size;
2821 u8 reserved;
2822 } cmd;
2823
2824 cmd.SSID_size = priv->SSID_size;
2825 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2826 memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
2827 cmd.channel = (priv->channel & 0x7f);
2828 cmd.BSS_type = type;
2829 cmd.timeout = cpu_to_le16(2000);
2830
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002831 atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002832}
2833
Linus Torvalds1da177e2005-04-16 15:20:36 -07002834static void start(struct atmel_private *priv, int type)
2835{
2836 struct {
2837 u8 BSSID[6];
2838 u8 SSID[MAX_SSID_LENGTH];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002839 u8 BSS_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002840 u8 channel;
2841 u8 SSID_size;
2842 u8 reserved[3];
2843 } cmd;
2844
2845 cmd.SSID_size = priv->SSID_size;
2846 memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
2847 memcpy(cmd.BSSID, priv->BSSID, 6);
2848 cmd.BSS_type = type;
2849 cmd.channel = (priv->channel & 0x7f);
2850
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002851 atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002852}
2853
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002854static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
2855 u8 channel)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002856{
2857 int rejoin = 0;
Johannes Berg2c7060022008-10-30 22:09:54 +01002858 int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002859 SHORT_PREAMBLE : LONG_PREAMBLE;
2860
2861 if (priv->preamble != new) {
2862 priv->preamble = new;
2863 rejoin = 1;
2864 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
2865 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002866
Linus Torvalds1da177e2005-04-16 15:20:36 -07002867 if (priv->channel != channel) {
2868 priv->channel = channel;
2869 rejoin = 1;
2870 atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
2871 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002872
Linus Torvalds1da177e2005-04-16 15:20:36 -07002873 if (rejoin) {
2874 priv->station_is_associated = 0;
2875 atmel_enter_state(priv, STATION_STATE_JOINNING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002876
Linus Torvalds1da177e2005-04-16 15:20:36 -07002877 if (priv->operating_mode == IW_MODE_INFRA)
2878 join(priv, BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002879 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07002880 join(priv, BSS_TYPE_AD_HOC);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002881 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002882}
2883
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002884static void send_authentication_request(struct atmel_private *priv, u16 system,
2885 u8 *challenge, int challenge_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002886{
Johannes Berg2c7060022008-10-30 22:09:54 +01002887 struct ieee80211_hdr header;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002888 struct auth_body auth;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002889
Johannes Berg2c7060022008-10-30 22:09:54 +01002890 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002891 header.duration_id = cpu_to_le16(0x8000);
Johannes Berg2c7060022008-10-30 22:09:54 +01002892 header.seq_ctrl = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002893 memcpy(header.addr1, priv->CurrentBSSID, 6);
2894 memcpy(header.addr2, priv->dev->dev_addr, 6);
2895 memcpy(header.addr3, priv->CurrentBSSID, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002896
2897 if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002898 /* no WEP for authentication frames with TrSeqNo 1 */
John Daiker8830cb62009-03-08 22:18:35 -07002899 header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002900
2901 auth.alg = cpu_to_le16(system);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002902
2903 auth.status = 0;
2904 auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002905 priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002906 priv->CurrentAuthentTransactionSeqNum += 2;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002907
Linus Torvalds1da177e2005-04-16 15:20:36 -07002908 if (challenge_len != 0) {
2909 auth.el_id = 16; /* challenge_text */
2910 auth.chall_text_len = challenge_len;
2911 memcpy(auth.chall_text, challenge, challenge_len);
2912 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
2913 } else {
2914 atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
2915 }
2916}
2917
2918static void send_association_request(struct atmel_private *priv, int is_reassoc)
2919{
2920 u8 *ssid_el_p;
2921 int bodysize;
Johannes Berg2c7060022008-10-30 22:09:54 +01002922 struct ieee80211_hdr header;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923 struct ass_req_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05002924 __le16 capability;
2925 __le16 listen_interval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002926 u8 ap[6]; /* nothing after here directly accessible */
2927 u8 ssid_el_id;
2928 u8 ssid_len;
2929 u8 ssid[MAX_SSID_LENGTH];
2930 u8 sup_rates_el_id;
2931 u8 sup_rates_len;
2932 u8 rates[4];
2933 } body;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002934
Johannes Berg2c7060022008-10-30 22:09:54 +01002935 header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
Jeff Garzikb4538722005-05-12 22:48:20 -04002936 (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002937 header.duration_id = cpu_to_le16(0x8000);
Johannes Berg2c7060022008-10-30 22:09:54 +01002938 header.seq_ctrl = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002939
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002940 memcpy(header.addr1, priv->CurrentBSSID, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002941 memcpy(header.addr2, priv->dev->dev_addr, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002942 memcpy(header.addr3, priv->CurrentBSSID, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002943
Dan Williams4861dd72006-02-05 17:57:36 -05002944 body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002945 if (priv->wep_is_on)
Dan Williams4861dd72006-02-05 17:57:36 -05002946 body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002947 if (priv->preamble == SHORT_PREAMBLE)
Johannes Berg2c7060022008-10-30 22:09:54 +01002948 body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002949
2950 body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002951
Linus Torvalds1da177e2005-04-16 15:20:36 -07002952 /* current AP address - only in reassoc frame */
2953 if (is_reassoc) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002954 memcpy(body.ap, priv->CurrentBSSID, 6);
Joe Perches2c208892012-06-04 12:44:17 +00002955 ssid_el_p = &body.ssid_el_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956 bodysize = 18 + priv->SSID_size;
2957 } else {
Joe Perches2c208892012-06-04 12:44:17 +00002958 ssid_el_p = &body.ap[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002959 bodysize = 12 + priv->SSID_size;
2960 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002961
Johannes Berg2c7060022008-10-30 22:09:54 +01002962 ssid_el_p[0] = WLAN_EID_SSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002963 ssid_el_p[1] = priv->SSID_size;
2964 memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
Johannes Berg2c7060022008-10-30 22:09:54 +01002965 ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
Masanari Iida02582e92012-08-22 19:11:26 +09002966 ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported rates */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967 memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
2968
2969 atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
2970}
2971
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002972static int is_frame_from_current_bss(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01002973 struct ieee80211_hdr *header)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002974{
Johannes Berg2c7060022008-10-30 22:09:54 +01002975 if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002976 return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
2977 else
2978 return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
2979}
2980
2981static int retrieve_bss(struct atmel_private *priv)
2982{
2983 int i;
2984 int max_rssi = -128;
2985 int max_index = -1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002986
Linus Torvalds1da177e2005-04-16 15:20:36 -07002987 if (priv->BSS_list_entries == 0)
2988 return -1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002989
Linus Torvalds1da177e2005-04-16 15:20:36 -07002990 if (priv->connect_to_any_BSS) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002991 /* Select a BSS with the max-RSSI but of the same type and of
2992 the same WEP mode and that it is not marked as 'bad' (i.e.
2993 we had previously failed to connect to this BSS with the
2994 settings that we currently use) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002995 priv->current_BSS = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002996 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002997 if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
Carlo Perassi4d791aa2005-11-13 15:02:15 +03002998 ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07002999 (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
3000 !(priv->BSSinfo[i].channel & 0x80)) {
3001 max_rssi = priv->BSSinfo[i].RSSI;
3002 priv->current_BSS = max_index = i;
3003 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003004 }
3005 return max_index;
3006 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003007
3008 for (i = 0; i < priv->BSS_list_entries; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003009 if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
3010 memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
3011 priv->operating_mode == priv->BSSinfo[i].BSStype &&
3012 atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
3013 if (priv->BSSinfo[i].RSSI >= max_rssi) {
3014 max_rssi = priv->BSSinfo[i].RSSI;
3015 max_index = i;
3016 }
3017 }
3018 }
3019 return max_index;
3020}
3021
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003022static void store_bss_info(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01003023 struct ieee80211_hdr *header, u16 capability,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003024 u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
3025 u8 *ssid, int is_beacon)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003026{
Dan Williams4861dd72006-02-05 17:57:36 -05003027 u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003028 int i, index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003029
3030 for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
3031 if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003032 index = i;
3033
John Daiker8830cb62009-03-08 22:18:35 -07003034 /* If we process a probe and an entry from this BSS exists
Linus Torvalds1da177e2005-04-16 15:20:36 -07003035 we will update the BSS entry with the info from this BSS.
3036 If we process a beacon we will only update RSSI */
3037
3038 if (index == -1) {
3039 if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
3040 return;
3041 index = priv->BSS_list_entries++;
3042 memcpy(priv->BSSinfo[index].BSSID, bss, 6);
3043 priv->BSSinfo[index].RSSI = rssi;
3044 } else {
3045 if (rssi > priv->BSSinfo[index].RSSI)
3046 priv->BSSinfo[index].RSSI = rssi;
3047 if (is_beacon)
3048 return;
3049 }
3050
3051 priv->BSSinfo[index].channel = channel;
3052 priv->BSSinfo[index].beacon_period = beacon_period;
Dan Williams4861dd72006-02-05 17:57:36 -05003053 priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003054 memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
3055 priv->BSSinfo[index].SSIDsize = ssid_len;
3056
Dan Williams4861dd72006-02-05 17:57:36 -05003057 if (capability & WLAN_CAPABILITY_IBSS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003058 priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
Dan Williams4861dd72006-02-05 17:57:36 -05003059 else if (capability & WLAN_CAPABILITY_ESS)
John Daiker8830cb62009-03-08 22:18:35 -07003060 priv->BSSinfo[index].BSStype = IW_MODE_INFRA;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003061
Johannes Berg2c7060022008-10-30 22:09:54 +01003062 priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
Linus Torvalds1da177e2005-04-16 15:20:36 -07003063 SHORT_PREAMBLE : LONG_PREAMBLE;
3064}
3065
3066static void authenticate(struct atmel_private *priv, u16 frame_len)
3067{
3068 struct auth_body *auth = (struct auth_body *)priv->rx_buf;
3069 u16 status = le16_to_cpu(auth->status);
3070 u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003071 u16 system = le16_to_cpu(auth->alg);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003072
Dan Williams4861dd72006-02-05 17:57:36 -05003073 if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003074 /* no WEP */
3075 if (priv->station_was_associated) {
3076 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3077 send_association_request(priv, 1);
3078 return;
3079 } else {
3080 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3081 send_association_request(priv, 0);
3082 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003083 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003084 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003085
Dan Williams4861dd72006-02-05 17:57:36 -05003086 if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
Dan Williams73451372006-02-05 17:55:16 -05003087 int should_associate = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003088 /* WEP */
3089 if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
3090 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003091
Dan Williams4861dd72006-02-05 17:57:36 -05003092 if (system == WLAN_AUTH_OPEN) {
Dan Williams73451372006-02-05 17:55:16 -05003093 if (trans_seq_no == 0x0002) {
3094 should_associate = 1;
3095 }
Dan Williams4861dd72006-02-05 17:57:36 -05003096 } else if (system == WLAN_AUTH_SHARED_KEY) {
Dan Williams73451372006-02-05 17:55:16 -05003097 if (trans_seq_no == 0x0002 &&
Johannes Berg2c7060022008-10-30 22:09:54 +01003098 auth->el_id == WLAN_EID_CHALLENGE) {
Dan Williams73451372006-02-05 17:55:16 -05003099 send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
3100 return;
3101 } else if (trans_seq_no == 0x0004) {
3102 should_associate = 1;
3103 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003104 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003105
Dan Williams73451372006-02-05 17:55:16 -05003106 if (should_associate) {
John Daiker8830cb62009-03-08 22:18:35 -07003107 if (priv->station_was_associated) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108 atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
3109 send_association_request(priv, 1);
3110 return;
3111 } else {
3112 atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
3113 send_association_request(priv, 0);
3114 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003115 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003116 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003117 }
3118
Dan Williams73451372006-02-05 17:55:16 -05003119 if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
Dan Williamsd0c29122008-08-18 15:32:41 -04003120 /* Flip back and forth between WEP auth modes until the max
3121 * authentication tries has been exceeded.
3122 */
Dan Williams73451372006-02-05 17:55:16 -05003123 if (system == WLAN_AUTH_OPEN) {
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003124 priv->CurrentAuthentTransactionSeqNum = 0x001;
Dan Williams73451372006-02-05 17:55:16 -05003125 priv->exclude_unencrypted = 1;
3126 send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
3127 return;
John Daiker8830cb62009-03-08 22:18:35 -07003128 } else if (system == WLAN_AUTH_SHARED_KEY
3129 && priv->wep_is_on) {
Dan Williamsd0c29122008-08-18 15:32:41 -04003130 priv->CurrentAuthentTransactionSeqNum = 0x001;
3131 priv->exclude_unencrypted = 0;
3132 send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
3133 return;
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003134 } else if (priv->connect_to_any_BSS) {
3135 int bss_index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003136
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003137 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003138
simon@thekelleys.org.ukb16a2282005-10-30 15:50:15 +00003139 if ((bss_index = retrieve_bss(priv)) != -1) {
3140 atmel_join_bss(priv, bss_index);
3141 return;
3142 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003143 }
3144 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003145
Linus Torvalds1da177e2005-04-16 15:20:36 -07003146 priv->AuthenticationRequestRetryCnt = 0;
3147 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3148 priv->station_is_associated = 0;
3149}
3150
3151static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
3152{
3153 struct ass_resp_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05003154 __le16 capability;
3155 __le16 status;
3156 __le16 ass_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003157 u8 el_id;
3158 u8 length;
3159 u8 rates[4];
3160 } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003161
3162 u16 status = le16_to_cpu(ass_resp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003163 u16 ass_id = le16_to_cpu(ass_resp->ass_id);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003164 u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
3165
Dan Williams9a6301c2006-01-10 00:56:11 -05003166 union iwreq_data wrqu;
3167
Linus Torvalds1da177e2005-04-16 15:20:36 -07003168 if (frame_len < 8 + rates_len)
3169 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003170
Dan Williams4861dd72006-02-05 17:57:36 -05003171 if (status == WLAN_STATUS_SUCCESS) {
3172 if (subtype == IEEE80211_STYPE_ASSOC_RESP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003173 priv->AssociationRequestRetryCnt = 0;
3174 else
3175 priv->ReAssociationRequestRetryCnt = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003176
3177 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3178 MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
3179 atmel_set_mib(priv, Phy_Mib_Type,
3180 PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003181 if (priv->power_mode == 0) {
3182 priv->listen_interval = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003183 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3184 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3185 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3186 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003187 } else {
3188 priv->listen_interval = 2;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003189 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3190 MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
3191 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3192 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003193 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003194
Linus Torvalds1da177e2005-04-16 15:20:36 -07003195 priv->station_is_associated = 1;
3196 priv->station_was_associated = 1;
3197 atmel_enter_state(priv, STATION_STATE_READY);
Dan Williams9a6301c2006-01-10 00:56:11 -05003198
3199 /* Send association event to userspace */
3200 wrqu.data.length = 0;
3201 wrqu.data.flags = 0;
3202 memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
3203 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
3204 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
3205
Linus Torvalds1da177e2005-04-16 15:20:36 -07003206 return;
3207 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003208
Dan Williams4861dd72006-02-05 17:57:36 -05003209 if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
3210 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3211 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003212 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3213 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3214 priv->AssociationRequestRetryCnt++;
3215 send_association_request(priv, 0);
3216 return;
3217 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003218
Dan Williams4861dd72006-02-05 17:57:36 -05003219 if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
3220 status != WLAN_STATUS_ASSOC_DENIED_RATES &&
3221 status != WLAN_STATUS_CAPS_UNSUPPORTED &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003222 priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
3223 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3224 priv->ReAssociationRequestRetryCnt++;
3225 send_association_request(priv, 1);
3226 return;
3227 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003228
Linus Torvalds1da177e2005-04-16 15:20:36 -07003229 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3230 priv->station_is_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003231
3232 if (priv->connect_to_any_BSS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003233 int bss_index;
3234 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003235
3236 if ((bss_index = retrieve_bss(priv)) != -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003237 atmel_join_bss(priv, bss_index);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003238 }
3239}
3240
Hannes Eder2ed5ba82008-12-26 00:12:59 -08003241static void atmel_join_bss(struct atmel_private *priv, int bss_index)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003242{
3243 struct bss_info *bss = &priv->BSSinfo[bss_index];
3244
3245 memcpy(priv->CurrentBSSID, bss->BSSID, 6);
3246 memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
3247
3248 /* The WPA stuff cares about the current AP address */
3249 if (priv->use_wpa)
3250 build_wpa_mib(priv);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003251
Linus Torvalds1da177e2005-04-16 15:20:36 -07003252 /* When switching to AdHoc turn OFF Power Save if needed */
3253
3254 if (bss->BSStype == IW_MODE_ADHOC &&
3255 priv->operating_mode != IW_MODE_ADHOC &&
3256 priv->power_mode) {
3257 priv->power_mode = 0;
3258 priv->listen_interval = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003259 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
3260 MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
3261 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
3262 MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003263 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003264
Linus Torvalds1da177e2005-04-16 15:20:36 -07003265 priv->operating_mode = bss->BSStype;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003266 priv->channel = bss->channel & 0x7f;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003267 priv->beacon_period = bss->beacon_period;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003268
Linus Torvalds1da177e2005-04-16 15:20:36 -07003269 if (priv->preamble != bss->preamble) {
3270 priv->preamble = bss->preamble;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003271 atmel_set_mib8(priv, Local_Mib_Type,
3272 LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003273 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003274
Linus Torvalds1da177e2005-04-16 15:20:36 -07003275 if (!priv->wep_is_on && bss->UsingWEP) {
3276 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3277 priv->station_is_associated = 0;
3278 return;
3279 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003280
Linus Torvalds1da177e2005-04-16 15:20:36 -07003281 if (priv->wep_is_on && !bss->UsingWEP) {
3282 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3283 priv->station_is_associated = 0;
3284 return;
3285 }
3286
3287 atmel_enter_state(priv, STATION_STATE_JOINNING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003288
Linus Torvalds1da177e2005-04-16 15:20:36 -07003289 if (priv->operating_mode == IW_MODE_INFRA)
3290 join(priv, BSS_TYPE_INFRASTRUCTURE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003291 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003292 join(priv, BSS_TYPE_AD_HOC);
3293}
3294
Linus Torvalds1da177e2005-04-16 15:20:36 -07003295static void restart_search(struct atmel_private *priv)
3296{
3297 int bss_index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003298
Linus Torvalds1da177e2005-04-16 15:20:36 -07003299 if (!priv->connect_to_any_BSS) {
3300 atmel_scan(priv, 1);
3301 } else {
3302 priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003303
3304 if ((bss_index = retrieve_bss(priv)) != -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003305 atmel_join_bss(priv, bss_index);
3306 else
3307 atmel_scan(priv, 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003308 }
3309}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003310
3311static void smooth_rssi(struct atmel_private *priv, u8 rssi)
3312{
3313 u8 old = priv->wstats.qual.level;
3314 u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
3315
3316 switch (priv->firmware_type) {
John Daiker8830cb62009-03-08 22:18:35 -07003317 case ATMEL_FW_TYPE_502E:
3318 max_rssi = 63; /* 502-rmfd-reve max by experiment */
3319 break;
3320 default:
3321 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003322 }
3323
3324 rssi = rssi * 100 / max_rssi;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003325 if ((rssi + old) % 2)
3326 priv->wstats.qual.level = (rssi + old) / 2 + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003327 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003328 priv->wstats.qual.level = (rssi + old) / 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003329 priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
3330 priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
3331}
3332
3333static void atmel_smooth_qual(struct atmel_private *priv)
3334{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003335 unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003336 while (time_diff--) {
3337 priv->last_qual += HZ;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003338 priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
3339 priv->wstats.qual.qual +=
Linus Torvalds1da177e2005-04-16 15:20:36 -07003340 priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
3341 priv->beacons_this_sec = 0;
3342 }
3343 priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
3344 priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
3345}
3346
Uwe Kleine-Koenig3dbda772009-07-23 08:31:31 +02003347/* deals with incoming management frames. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003348static void atmel_management_frame(struct atmel_private *priv,
Johannes Berg2c7060022008-10-30 22:09:54 +01003349 struct ieee80211_hdr *header,
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003350 u16 frame_len, u8 rssi)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003351{
3352 u16 subtype;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003353
Johannes Berg2c7060022008-10-30 22:09:54 +01003354 subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003355 switch (subtype) {
Dan Williams4861dd72006-02-05 17:57:36 -05003356 case IEEE80211_STYPE_BEACON:
3357 case IEEE80211_STYPE_PROBE_RESP:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003358
Linus Torvalds1da177e2005-04-16 15:20:36 -07003359 /* beacon frame has multiple variable-length fields -
3360 never let an engineer loose with a data structure design. */
3361 {
3362 struct beacon_format {
Al Viro0e5ce1f2007-12-22 13:45:50 -05003363 __le64 timestamp;
3364 __le16 interval;
3365 __le16 capability;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003366 u8 ssid_el_id;
3367 u8 ssid_length;
3368 /* ssid here */
3369 u8 rates_el_id;
3370 u8 rates_length;
3371 /* rates here */
3372 u8 ds_el_id;
3373 u8 ds_length;
3374 /* ds here */
3375 } *beacon = (struct beacon_format *)priv->rx_buf;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003376
Linus Torvalds1da177e2005-04-16 15:20:36 -07003377 u8 channel, rates_length, ssid_length;
3378 u64 timestamp = le64_to_cpu(beacon->timestamp);
3379 u16 beacon_interval = le16_to_cpu(beacon->interval);
3380 u16 capability = le16_to_cpu(beacon->capability);
3381 u8 *beaconp = priv->rx_buf;
3382 ssid_length = beacon->ssid_length;
3383 /* this blows chunks. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003384 if (frame_len < 14 || frame_len < ssid_length + 15)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003385 return;
3386 rates_length = beaconp[beacon->ssid_length + 15];
3387 if (frame_len < ssid_length + rates_length + 18)
3388 return;
3389 if (ssid_length > MAX_SSID_LENGTH)
3390 return;
3391 channel = beaconp[ssid_length + rates_length + 18];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003392
Linus Torvalds1da177e2005-04-16 15:20:36 -07003393 if (priv->station_state == STATION_STATE_READY) {
3394 smooth_rssi(priv, rssi);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003395 if (is_frame_from_current_bss(priv, header)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003396 priv->beacons_this_sec++;
3397 atmel_smooth_qual(priv);
3398 if (priv->last_beacon_timestamp) {
3399 /* Note truncate this to 32 bits - kernel can't divide a long long */
3400 u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
3401 int beacons = beacon_delay / (beacon_interval * 1000);
3402 if (beacons > 1)
3403 priv->wstats.miss.beacon += beacons - 1;
3404 }
3405 priv->last_beacon_timestamp = timestamp;
3406 handle_beacon_probe(priv, capability, channel);
3407 }
3408 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003409
3410 if (priv->station_state == STATION_STATE_SCANNING)
3411 store_bss_info(priv, header, capability,
3412 beacon_interval, channel, rssi,
3413 ssid_length,
3414 &beacon->rates_el_id,
Dan Williams4861dd72006-02-05 17:57:36 -05003415 subtype == IEEE80211_STYPE_BEACON);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003416 }
3417 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003418
Dan Williams4861dd72006-02-05 17:57:36 -05003419 case IEEE80211_STYPE_AUTH:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003420
3421 if (priv->station_state == STATION_STATE_AUTHENTICATING)
3422 authenticate(priv, frame_len);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003423
Linus Torvalds1da177e2005-04-16 15:20:36 -07003424 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003425
Dan Williams4861dd72006-02-05 17:57:36 -05003426 case IEEE80211_STYPE_ASSOC_RESP:
3427 case IEEE80211_STYPE_REASSOC_RESP:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003428
3429 if (priv->station_state == STATION_STATE_ASSOCIATING ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003430 priv->station_state == STATION_STATE_REASSOCIATING)
3431 associate(priv, frame_len, subtype);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003432
Linus Torvalds1da177e2005-04-16 15:20:36 -07003433 break;
3434
Dan Williams4861dd72006-02-05 17:57:36 -05003435 case IEEE80211_STYPE_DISASSOC:
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003436 if (priv->station_is_associated &&
3437 priv->operating_mode == IW_MODE_INFRA &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003438 is_frame_from_current_bss(priv, header)) {
3439 priv->station_was_associated = 0;
3440 priv->station_is_associated = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003441
Linus Torvalds1da177e2005-04-16 15:20:36 -07003442 atmel_enter_state(priv, STATION_STATE_JOINNING);
3443 join(priv, BSS_TYPE_INFRASTRUCTURE);
3444 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003445
Linus Torvalds1da177e2005-04-16 15:20:36 -07003446 break;
3447
Dan Williams4861dd72006-02-05 17:57:36 -05003448 case IEEE80211_STYPE_DEAUTH:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003449 if (priv->operating_mode == IW_MODE_INFRA &&
3450 is_frame_from_current_bss(priv, header)) {
3451 priv->station_was_associated = 0;
3452
3453 atmel_enter_state(priv, STATION_STATE_JOINNING);
3454 join(priv, BSS_TYPE_INFRASTRUCTURE);
3455 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003456
Linus Torvalds1da177e2005-04-16 15:20:36 -07003457 break;
3458 }
3459}
3460
3461/* run when timer expires */
3462static void atmel_management_timer(u_long a)
3463{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003464 struct net_device *dev = (struct net_device *) a;
3465 struct atmel_private *priv = netdev_priv(dev);
3466 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003467
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003468 /* Check if the card has been yanked. */
3469 if (priv->card && priv->present_callback &&
3470 !(*priv->present_callback)(priv->card))
3471 return;
3472
3473 spin_lock_irqsave(&priv->irqlock, flags);
3474
3475 switch (priv->station_state) {
3476
3477 case STATION_STATE_AUTHENTICATING:
3478 if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
3479 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3480 priv->station_is_associated = 0;
3481 priv->AuthenticationRequestRetryCnt = 0;
3482 restart_search(priv);
3483 } else {
Dan Williams4861dd72006-02-05 17:57:36 -05003484 int auth = WLAN_AUTH_OPEN;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003485 priv->AuthenticationRequestRetryCnt++;
3486 priv->CurrentAuthentTransactionSeqNum = 0x0001;
3487 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
Dan Williams73451372006-02-05 17:55:16 -05003488 if (priv->wep_is_on && priv->exclude_unencrypted)
Dan Williams4861dd72006-02-05 17:57:36 -05003489 auth = WLAN_AUTH_SHARED_KEY;
Dan Williams73451372006-02-05 17:55:16 -05003490 send_authentication_request(priv, auth, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003491 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003492 break;
3493
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003494 case STATION_STATE_ASSOCIATING:
3495 if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3496 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3497 priv->station_is_associated = 0;
3498 priv->AssociationRequestRetryCnt = 0;
3499 restart_search(priv);
3500 } else {
3501 priv->AssociationRequestRetryCnt++;
3502 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3503 send_association_request(priv, 0);
3504 }
3505 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003506
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003507 case STATION_STATE_REASSOCIATING:
3508 if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
3509 atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
3510 priv->station_is_associated = 0;
3511 priv->ReAssociationRequestRetryCnt = 0;
3512 restart_search(priv);
3513 } else {
3514 priv->ReAssociationRequestRetryCnt++;
3515 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3516 send_association_request(priv, 1);
3517 }
3518 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003519
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003520 default:
3521 break;
3522 }
3523
3524 spin_unlock_irqrestore(&priv->irqlock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003525}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003526
Linus Torvalds1da177e2005-04-16 15:20:36 -07003527static void atmel_command_irq(struct atmel_private *priv)
3528{
3529 u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
3530 u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
3531 int fast_scan;
Dan Williams3a1af6f2006-03-31 15:13:31 -05003532 union iwreq_data wrqu;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003533
3534 if (status == CMD_STATUS_IDLE ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003535 status == CMD_STATUS_IN_PROGRESS)
3536 return;
3537
John Daiker8830cb62009-03-08 22:18:35 -07003538 switch (command) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003539 case CMD_Start:
3540 if (status == CMD_STATUS_COMPLETE) {
3541 priv->station_was_associated = priv->station_is_associated;
3542 atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
3543 (u8 *)priv->CurrentBSSID, 6);
3544 atmel_enter_state(priv, STATION_STATE_READY);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003545 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003546 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003547
Linus Torvalds1da177e2005-04-16 15:20:36 -07003548 case CMD_Scan:
3549 fast_scan = priv->fast_scan;
3550 priv->fast_scan = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003551
Linus Torvalds1da177e2005-04-16 15:20:36 -07003552 if (status != CMD_STATUS_COMPLETE) {
3553 atmel_scan(priv, 1);
3554 } else {
3555 int bss_index = retrieve_bss(priv);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003556 int notify_scan_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003557 if (bss_index != -1) {
3558 atmel_join_bss(priv, bss_index);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003559 } else if (priv->operating_mode == IW_MODE_ADHOC &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003560 priv->SSID_size != 0) {
3561 start(priv, BSS_TYPE_AD_HOC);
3562 } else {
3563 priv->fast_scan = !fast_scan;
3564 atmel_scan(priv, 1);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003565 notify_scan_complete = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003566 }
3567 priv->site_survey_state = SITE_SURVEY_COMPLETED;
Dan Williams3a1af6f2006-03-31 15:13:31 -05003568 if (notify_scan_complete) {
3569 wrqu.data.length = 0;
3570 wrqu.data.flags = 0;
3571 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
3572 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003573 }
3574 break;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003575
Linus Torvalds1da177e2005-04-16 15:20:36 -07003576 case CMD_SiteSurvey:
3577 priv->fast_scan = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003578
Linus Torvalds1da177e2005-04-16 15:20:36 -07003579 if (status != CMD_STATUS_COMPLETE)
3580 return;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003581
Linus Torvalds1da177e2005-04-16 15:20:36 -07003582 priv->site_survey_state = SITE_SURVEY_COMPLETED;
3583 if (priv->station_is_associated) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003584 atmel_enter_state(priv, STATION_STATE_READY);
Dan Williams3a1af6f2006-03-31 15:13:31 -05003585 wrqu.data.length = 0;
3586 wrqu.data.flags = 0;
3587 wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003588 } else {
3589 atmel_scan(priv, 1);
3590 }
3591 break;
3592
3593 case CMD_Join:
3594 if (status == CMD_STATUS_COMPLETE) {
3595 if (priv->operating_mode == IW_MODE_ADHOC) {
3596 priv->station_was_associated = priv->station_is_associated;
3597 atmel_enter_state(priv, STATION_STATE_READY);
3598 } else {
Dan Williams4861dd72006-02-05 17:57:36 -05003599 int auth = WLAN_AUTH_OPEN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003600 priv->AuthenticationRequestRetryCnt = 0;
3601 atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003602
Linus Torvalds1da177e2005-04-16 15:20:36 -07003603 mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
3604 priv->CurrentAuthentTransactionSeqNum = 0x0001;
Dan Williams73451372006-02-05 17:55:16 -05003605 if (priv->wep_is_on && priv->exclude_unencrypted)
Dan Williams4861dd72006-02-05 17:57:36 -05003606 auth = WLAN_AUTH_SHARED_KEY;
Dan Williams73451372006-02-05 17:55:16 -05003607 send_authentication_request(priv, auth, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003608 }
3609 return;
3610 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003611
Linus Torvalds1da177e2005-04-16 15:20:36 -07003612 atmel_scan(priv, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003613 }
3614}
3615
3616static int atmel_wakeup_firmware(struct atmel_private *priv)
3617{
3618 struct host_info_struct *iface = &priv->host_info;
3619 u16 mr1, mr3;
3620 int i;
3621
3622 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3623 atmel_set_gcr(priv->dev, GCR_REMAP);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003624
Linus Torvalds1da177e2005-04-16 15:20:36 -07003625 /* wake up on-board processor */
3626 atmel_clear_gcr(priv->dev, 0x0040);
3627 atmel_write16(priv->dev, BSR, BSS_SRAM);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003628
Linus Torvalds1da177e2005-04-16 15:20:36 -07003629 if (priv->card_type == CARD_TYPE_SPI_FLASH)
3630 mdelay(100);
3631
3632 /* and wait for it */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003633 for (i = LOOP_RETRY_LIMIT; i; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003634 mr1 = atmel_read16(priv->dev, MR1);
3635 mr3 = atmel_read16(priv->dev, MR3);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003636
3637 if (mr3 & MAC_BOOT_COMPLETE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003638 break;
3639 if (mr1 & MAC_BOOT_COMPLETE &&
3640 priv->bus_type == BUS_TYPE_PCCARD)
3641 break;
3642 }
3643
3644 if (i == 0) {
3645 printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003646 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003647 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003648
Linus Torvalds1da177e2005-04-16 15:20:36 -07003649 if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
3650 printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003651 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003652 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003653
3654 /* now check for completion of MAC initialization through
3655 the FunCtrl field of the IFACE, poll MR1 to detect completion of
3656 MAC initialization, check completion status, set interrupt mask,
3657 enables interrupts and calls Tx and Rx initialization functions */
3658
Linus Torvalds1da177e2005-04-16 15:20:36 -07003659 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003660
3661 for (i = LOOP_RETRY_LIMIT; i; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003662 mr1 = atmel_read16(priv->dev, MR1);
3663 mr3 = atmel_read16(priv->dev, MR3);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003664
3665 if (mr3 & MAC_INIT_COMPLETE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003666 break;
3667 if (mr1 & MAC_INIT_COMPLETE &&
3668 priv->bus_type == BUS_TYPE_PCCARD)
3669 break;
3670 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003671
Linus Torvalds1da177e2005-04-16 15:20:36 -07003672 if (i == 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003673 printk(KERN_ALERT "%s: MAC failed to initialise.\n",
3674 priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003675 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003676 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003677
Linus Torvalds1da177e2005-04-16 15:20:36 -07003678 /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
3679 if ((mr3 & MAC_INIT_COMPLETE) &&
3680 !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
3681 printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003682 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003683 }
3684 if ((mr1 & MAC_INIT_COMPLETE) &&
3685 !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
3686 printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003687 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003688 }
3689
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003690 atmel_copy_to_host(priv->dev, (unsigned char *)iface,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003691 priv->host_info_base, sizeof(*iface));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003692
Linus Torvalds1da177e2005-04-16 15:20:36 -07003693 iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
3694 iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
3695 iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
3696 iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
3697 iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
3698 iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
3699 iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
3700 iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
3701 iface->build_version = le16_to_cpu(iface->build_version);
3702 iface->command_pos = le16_to_cpu(iface->command_pos);
3703 iface->major_version = le16_to_cpu(iface->major_version);
3704 iface->minor_version = le16_to_cpu(iface->minor_version);
3705 iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
3706 iface->mac_status = le16_to_cpu(iface->mac_status);
3707
Dan Williams3c34a5d2008-08-18 15:40:02 -04003708 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003709}
3710
3711/* determine type of memory and MAC address */
3712static int probe_atmel_card(struct net_device *dev)
3713{
3714 int rc = 0;
3715 struct atmel_private *priv = netdev_priv(dev);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003716
Linus Torvalds1da177e2005-04-16 15:20:36 -07003717 /* reset pccard */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003718 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003719 atmel_write16(dev, GCR, 0x0060);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003720
Linus Torvalds1da177e2005-04-16 15:20:36 -07003721 atmel_write16(dev, GCR, 0x0040);
3722 mdelay(500);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003723
Linus Torvalds1da177e2005-04-16 15:20:36 -07003724 if (atmel_read16(dev, MR2) == 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003725 /* No stored firmware so load a small stub which just
Linus Torvalds1da177e2005-04-16 15:20:36 -07003726 tells us the MAC address */
3727 int i;
3728 priv->card_type = CARD_TYPE_EEPROM;
3729 atmel_write16(dev, BSR, BSS_IRAM);
3730 atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
3731 atmel_set_gcr(dev, GCR_REMAP);
3732 atmel_clear_gcr(priv->dev, 0x0040);
3733 atmel_write16(dev, BSR, BSS_SRAM);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003734 for (i = LOOP_RETRY_LIMIT; i; i--)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003735 if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
3736 break;
3737 if (i == 0) {
3738 printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
3739 } else {
3740 atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
3741 /* got address, now squash it again until the network
3742 interface is opened */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003743 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003744 atmel_write16(dev, GCR, 0x0060);
3745 atmel_write16(dev, GCR, 0x0040);
3746 rc = 1;
3747 }
3748 } else if (atmel_read16(dev, MR4) == 0) {
3749 /* Mac address easy in this case. */
3750 priv->card_type = CARD_TYPE_PARALLEL_FLASH;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003751 atmel_write16(dev, BSR, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003752 atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
3753 atmel_write16(dev, BSR, 0x200);
3754 rc = 1;
3755 } else {
3756 /* Standard firmware in flash, boot it up and ask
3757 for the Mac Address */
3758 priv->card_type = CARD_TYPE_SPI_FLASH;
Dan Williams3c34a5d2008-08-18 15:40:02 -04003759 if (atmel_wakeup_firmware(priv) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003760 atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003761
Linus Torvalds1da177e2005-04-16 15:20:36 -07003762 /* got address, now squash it again until the network
3763 interface is opened */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003764 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003765 atmel_write16(dev, GCR, 0x0060);
3766 atmel_write16(dev, GCR, 0x0040);
3767 rc = 1;
3768 }
3769 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003770
Linus Torvalds1da177e2005-04-16 15:20:36 -07003771 if (rc) {
3772 if (dev->dev_addr[0] == 0xFF) {
Joe Perches3370a892010-11-20 18:38:55 -08003773 static const u8 default_mac[] = {
3774 0x00, 0x04, 0x25, 0x00, 0x00, 0x00
3775 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003776 printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
3777 memcpy(dev->dev_addr, default_mac, 6);
3778 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003779 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003780
Linus Torvalds1da177e2005-04-16 15:20:36 -07003781 return rc;
3782}
3783
Linus Torvalds1da177e2005-04-16 15:20:36 -07003784/* Move the encyption information on the MIB structure.
3785 This routine is for the pre-WPA firmware: later firmware has
3786 a different format MIB and a different routine. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003787static void build_wep_mib(struct atmel_private *priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003788{
3789 struct { /* NB this is matched to the hardware, don't change. */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003790 u8 wep_is_on;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003791 u8 default_key; /* 0..3 */
3792 u8 reserved;
3793 u8 exclude_unencrypted;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003794
Linus Torvalds1da177e2005-04-16 15:20:36 -07003795 u32 WEPICV_error_count;
3796 u32 WEP_excluded_count;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003797
Linus Torvalds1da177e2005-04-16 15:20:36 -07003798 u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003799 u8 encryption_level; /* 0, 1, 2 */
3800 u8 reserved2[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07003801 } mib;
3802 int i;
3803
3804 mib.wep_is_on = priv->wep_is_on;
3805 if (priv->wep_is_on) {
3806 if (priv->wep_key_len[priv->default_key] > 5)
3807 mib.encryption_level = 2;
3808 else
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003809 mib.encryption_level = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003810 } else {
3811 mib.encryption_level = 0;
3812 }
3813
3814 mib.default_key = priv->default_key;
3815 mib.exclude_unencrypted = priv->exclude_unencrypted;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003816
3817 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003818 memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003819
Linus Torvalds1da177e2005-04-16 15:20:36 -07003820 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3821}
3822
3823static void build_wpa_mib(struct atmel_private *priv)
3824{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003825 /* This is for the later (WPA enabled) firmware. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003826
3827 struct { /* NB this is matched to the hardware, don't change. */
3828 u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
3829 u8 receiver_address[6];
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003830 u8 wep_is_on;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003831 u8 default_key; /* 0..3 */
3832 u8 group_key;
3833 u8 exclude_unencrypted;
3834 u8 encryption_type;
3835 u8 reserved;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003836
Linus Torvalds1da177e2005-04-16 15:20:36 -07003837 u32 WEPICV_error_count;
3838 u32 WEP_excluded_count;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003839
Linus Torvalds1da177e2005-04-16 15:20:36 -07003840 u8 key_RSC[4][8];
3841 } mib;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003842
Linus Torvalds1da177e2005-04-16 15:20:36 -07003843 int i;
3844
3845 mib.wep_is_on = priv->wep_is_on;
3846 mib.exclude_unencrypted = priv->exclude_unencrypted;
3847 memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003848
Linus Torvalds1da177e2005-04-16 15:20:36 -07003849 /* zero all the keys before adding in valid ones. */
3850 memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003851
Linus Torvalds1da177e2005-04-16 15:20:36 -07003852 if (priv->wep_is_on) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003853 /* There's a comment in the Atmel code to the effect that this
3854 is only valid when still using WEP, it may need to be set to
3855 something to use WPA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003856 memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003857
Linus Torvalds1da177e2005-04-16 15:20:36 -07003858 mib.default_key = mib.group_key = 255;
3859 for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
3860 if (priv->wep_key_len[i] > 0) {
3861 memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
3862 if (i == priv->default_key) {
3863 mib.default_key = i;
3864 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003865 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003866 } else {
3867 mib.group_key = i;
3868 priv->group_cipher_suite = priv->pairwise_cipher_suite;
John Daiker8830cb62009-03-08 22:18:35 -07003869 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003870 mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003871 }
3872 }
3873 }
3874 if (mib.default_key == 255)
3875 mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
3876 if (mib.group_key == 255)
3877 mib.group_key = mib.default_key;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003878
Linus Torvalds1da177e2005-04-16 15:20:36 -07003879 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003880
Linus Torvalds1da177e2005-04-16 15:20:36 -07003881 atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
3882}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003883
3884static int reset_atmel_card(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003885{
3886 /* do everything necessary to wake up the hardware, including
3887 waiting for the lightning strike and throwing the knife switch....
3888
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003889 set all the Mib values which matter in the card to match
Linus Torvalds1da177e2005-04-16 15:20:36 -07003890 their settings in the atmel_private structure. Some of these
3891 can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
3892 can only be changed by tearing down the world and coming back through
3893 here.
3894
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003895 This routine is also responsible for initialising some
3896 hardware-specific fields in the atmel_private structure,
Lucas De Marchi25985ed2011-03-30 22:57:33 -03003897 including a copy of the firmware's hostinfo structure
Nick Andrewd5352952009-01-03 18:51:33 +11003898 which is the route into the rest of the firmware datastructures. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003899
3900 struct atmel_private *priv = netdev_priv(dev);
3901 u8 configuration;
Dan Williams9a6301c2006-01-10 00:56:11 -05003902 int old_state = priv->station_state;
Dan Williams3c34a5d2008-08-18 15:40:02 -04003903 int err = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003904
Linus Torvalds1da177e2005-04-16 15:20:36 -07003905 /* data to add to the firmware names, in priority order
3906 this implemenents firmware versioning */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003907
Linus Torvalds1da177e2005-04-16 15:20:36 -07003908 static char *firmware_modifier[] = {
3909 "-wpa",
3910 "",
3911 NULL
3912 };
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003913
Linus Torvalds1da177e2005-04-16 15:20:36 -07003914 /* reset pccard */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003915 if (priv->bus_type == BUS_TYPE_PCCARD)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003916 atmel_write16(priv->dev, GCR, 0x0060);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003917
Linus Torvalds1da177e2005-04-16 15:20:36 -07003918 /* stop card , disable interrupts */
3919 atmel_write16(priv->dev, GCR, 0x0040);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003920
Linus Torvalds1da177e2005-04-16 15:20:36 -07003921 if (priv->card_type == CARD_TYPE_EEPROM) {
3922 /* copy in firmware if needed */
3923 const struct firmware *fw_entry = NULL;
David Woodhouse2f26e8a2008-05-24 00:09:29 +01003924 const unsigned char *fw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003925 int len = priv->firmware_length;
3926 if (!(fw = priv->firmware)) {
3927 if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
3928 if (strlen(priv->firmware_id) == 0) {
3929 printk(KERN_INFO
3930 "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
3931 dev->name);
3932 printk(KERN_INFO
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003933 "%s: if not, use the firmware= module parameter.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003934 dev->name);
3935 strcpy(priv->firmware_id, "atmel_at76c502.bin");
3936 }
Dan Williams3c34a5d2008-08-18 15:40:02 -04003937 err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
3938 if (err != 0) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003939 printk(KERN_ALERT
3940 "%s: firmware %s is missing, cannot continue.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003941 dev->name, priv->firmware_id);
Dan Williams3c34a5d2008-08-18 15:40:02 -04003942 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003943 }
3944 } else {
3945 int fw_index = 0;
3946 int success = 0;
3947
3948 /* get firmware filename entry based on firmware type ID */
3949 while (fw_table[fw_index].fw_type != priv->firmware_type
3950 && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
3951 fw_index++;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003952
Linus Torvalds1da177e2005-04-16 15:20:36 -07003953 /* construct the actual firmware file name */
3954 if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
3955 int i;
3956 for (i = 0; firmware_modifier[i]; i++) {
3957 snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
3958 firmware_modifier[i], fw_table[fw_index].fw_file_ext);
3959 priv->firmware_id[31] = '\0';
3960 if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
3961 success = 1;
3962 break;
3963 }
3964 }
3965 }
3966 if (!success) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003967 printk(KERN_ALERT
3968 "%s: firmware %s is missing, cannot start.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003969 dev->name, priv->firmware_id);
3970 priv->firmware_id[0] = '\0';
Dan Williams3c34a5d2008-08-18 15:40:02 -04003971 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003972 }
3973 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003974
Linus Torvalds1da177e2005-04-16 15:20:36 -07003975 fw = fw_entry->data;
3976 len = fw_entry->size;
3977 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003978
John Daiker8830cb62009-03-08 22:18:35 -07003979 if (len <= 0x6000) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003980 atmel_write16(priv->dev, BSR, BSS_IRAM);
3981 atmel_copy_to_card(priv->dev, 0, fw, len);
3982 atmel_set_gcr(priv->dev, GCR_REMAP);
3983 } else {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03003984 /* Remap */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003985 atmel_set_gcr(priv->dev, GCR_REMAP);
3986 atmel_write16(priv->dev, BSR, BSS_IRAM);
3987 atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
3988 atmel_write16(priv->dev, BSR, 0x2ff);
3989 atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
3990 }
3991
Jesper Juhl74033022012-04-09 22:50:53 +02003992 release_firmware(fw_entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003993 }
3994
Dan Williams3c34a5d2008-08-18 15:40:02 -04003995 err = atmel_wakeup_firmware(priv);
3996 if (err != 0)
3997 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003998
3999 /* Check the version and set the correct flag for wpa stuff,
4000 old and new firmware is incompatible.
4001 The pre-wpa 3com firmware reports major version 5,
4002 the wpa 3com firmware is major version 4 and doesn't need
4003 the 3com broken-ness filter. */
4004 priv->use_wpa = (priv->host_info.major_version == 4);
4005 priv->radio_on_broken = (priv->host_info.major_version == 5);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004006
John Daiker8830cb62009-03-08 22:18:35 -07004007 /* unmask all irq sources */
Linus Torvalds1da177e2005-04-16 15:20:36 -07004008 atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004009
Linus Torvalds1da177e2005-04-16 15:20:36 -07004010 /* int Tx system and enable Tx */
4011 atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
4012 atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
4013 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
4014 atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
4015
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004016 priv->tx_desc_free = priv->host_info.tx_desc_count;
4017 priv->tx_desc_head = 0;
4018 priv->tx_desc_tail = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004019 priv->tx_desc_previous = 0;
4020 priv->tx_free_mem = priv->host_info.tx_buff_size;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004021 priv->tx_buff_head = 0;
4022 priv->tx_buff_tail = 0;
4023
4024 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4025 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004026 configuration | FUNC_CTRL_TxENABLE);
4027
4028 /* init Rx system and enable */
4029 priv->rx_desc_head = 0;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004030
4031 configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
4032 atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004033 configuration | FUNC_CTRL_RxENABLE);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004034
Linus Torvalds1da177e2005-04-16 15:20:36 -07004035 if (!priv->radio_on_broken) {
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004036 if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
Linus Torvalds1da177e2005-04-16 15:20:36 -07004037 CMD_STATUS_REJECTED_RADIO_OFF) {
Dan Williams3c34a5d2008-08-18 15:40:02 -04004038 printk(KERN_INFO "%s: cannot turn the radio on.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07004039 dev->name);
John Daiker8830cb62009-03-08 22:18:35 -07004040 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004041 }
4042 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004043
Linus Torvalds1da177e2005-04-16 15:20:36 -07004044 /* set up enough MIB values to run. */
4045 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
4046 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
4047 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
4048 atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
4049 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
4050 atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
4051 atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004052 atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004053 priv->dev->dev_addr, 6);
4054 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
4055 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
4056 atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
4057 atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
4058 atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
4059 if (priv->use_wpa)
4060 build_wpa_mib(priv);
4061 else
4062 build_wep_mib(priv);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004063
John Daiker8830cb62009-03-08 22:18:35 -07004064 if (old_state == STATION_STATE_READY) {
Dan Williams9a6301c2006-01-10 00:56:11 -05004065 union iwreq_data wrqu;
4066
4067 wrqu.data.length = 0;
4068 wrqu.data.flags = 0;
4069 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
4070 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
4071 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
4072 }
4073
Dan Williams3c34a5d2008-08-18 15:40:02 -04004074 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004075}
4076
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004077static void atmel_send_command(struct atmel_private *priv, int command,
4078 void *cmd, int cmd_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004079{
4080 if (cmd)
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004081 atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
Linus Torvalds1da177e2005-04-16 15:20:36 -07004082 cmd, cmd_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004083
Linus Torvalds1da177e2005-04-16 15:20:36 -07004084 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
4085 atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
4086}
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004087
4088static int atmel_send_command_wait(struct atmel_private *priv, int command,
4089 void *cmd, int cmd_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004090{
4091 int i, status;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004092
Linus Torvalds1da177e2005-04-16 15:20:36 -07004093 atmel_send_command(priv, command, cmd, cmd_size);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004094
Linus Torvalds1da177e2005-04-16 15:20:36 -07004095 for (i = 5000; i; i--) {
4096 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004097 if (status != CMD_STATUS_IDLE &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07004098 status != CMD_STATUS_IN_PROGRESS)
4099 break;
4100 udelay(20);
4101 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004102
Linus Torvalds1da177e2005-04-16 15:20:36 -07004103 if (i == 0) {
4104 printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
4105 status = CMD_STATUS_HOST_ERROR;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004106 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004107 if (command != CMD_EnableRadio)
4108 status = CMD_STATUS_COMPLETE;
4109 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004110
Linus Torvalds1da177e2005-04-16 15:20:36 -07004111 return status;
4112}
4113
4114static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
4115{
4116 struct get_set_mib m;
4117 m.type = type;
4118 m.size = 1;
4119 m.index = index;
4120
4121 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4122 return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
4123}
4124
4125static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
4126{
4127 struct get_set_mib m;
4128 m.type = type;
4129 m.size = 1;
4130 m.index = index;
4131 m.data[0] = data;
4132
4133 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
4134}
4135
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004136static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
4137 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004138{
4139 struct get_set_mib m;
4140 m.type = type;
4141 m.size = 2;
4142 m.index = index;
4143 m.data[0] = data;
4144 m.data[1] = data >> 8;
4145
4146 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
4147}
4148
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004149static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
4150 u8 *data, int data_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004151{
4152 struct get_set_mib m;
4153 m.type = type;
4154 m.size = data_len;
4155 m.index = index;
4156
4157 if (data_len > MIB_MAX_DATA_BYTES)
4158 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004159
Linus Torvalds1da177e2005-04-16 15:20:36 -07004160 memcpy(m.data, data, data_len);
4161 atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
4162}
4163
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004164static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
4165 u8 *data, int data_len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004166{
4167 struct get_set_mib m;
4168 m.type = type;
4169 m.size = data_len;
4170 m.index = index;
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004171
Linus Torvalds1da177e2005-04-16 15:20:36 -07004172 if (data_len > MIB_MAX_DATA_BYTES)
4173 printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004174
Linus Torvalds1da177e2005-04-16 15:20:36 -07004175 atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004176 atmel_copy_to_host(priv->dev, data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004177 atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
4178}
4179
4180static void atmel_writeAR(struct net_device *dev, u16 data)
4181{
4182 int i;
4183 outw(data, dev->base_addr + AR);
4184 /* Address register appears to need some convincing..... */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004185 for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004186 outw(data, dev->base_addr + AR);
4187}
4188
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004189static void atmel_copy_to_card(struct net_device *dev, u16 dest,
David Woodhouse2f26e8a2008-05-24 00:09:29 +01004190 const unsigned char *src, u16 len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004191{
4192 int i;
4193 atmel_writeAR(dev, dest);
4194 if (dest % 2) {
4195 atmel_write8(dev, DR, *src);
4196 src++; len--;
4197 }
4198 for (i = len; i > 1 ; i -= 2) {
4199 u8 lb = *src++;
4200 u8 hb = *src++;
4201 atmel_write16(dev, DR, lb | (hb << 8));
4202 }
4203 if (i)
4204 atmel_write8(dev, DR, *src);
4205}
4206
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004207static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
4208 u16 src, u16 len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004209{
4210 int i;
4211 atmel_writeAR(dev, src);
4212 if (src % 2) {
4213 *dest = atmel_read8(dev, DR);
4214 dest++; len--;
4215 }
4216 for (i = len; i > 1 ; i -= 2) {
4217 u16 hw = atmel_read16(dev, DR);
4218 *dest++ = hw;
4219 *dest++ = hw >> 8;
4220 }
4221 if (i)
4222 *dest = atmel_read8(dev, DR);
4223}
4224
4225static void atmel_set_gcr(struct net_device *dev, u16 mask)
4226{
4227 outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
4228}
4229
4230static void atmel_clear_gcr(struct net_device *dev, u16 mask)
4231{
4232 outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
4233}
4234
4235static int atmel_lock_mac(struct atmel_private *priv)
4236{
4237 int i, j = 20;
4238 retry:
4239 for (i = 5000; i; i--) {
4240 if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
4241 break;
4242 udelay(20);
4243 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004244
4245 if (!i)
4246 return 0; /* timed out */
4247
Linus Torvalds1da177e2005-04-16 15:20:36 -07004248 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
4249 if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
4250 atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004251 if (!j--)
4252 return 0; /* timed out */
Linus Torvalds1da177e2005-04-16 15:20:36 -07004253 goto retry;
4254 }
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004255
Linus Torvalds1da177e2005-04-16 15:20:36 -07004256 return 1;
4257}
4258
4259static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
4260{
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004261 atmel_writeAR(priv->dev, pos);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004262 atmel_write16(priv->dev, DR, data); /* card is little-endian */
4263 atmel_write16(priv->dev, DR, data >> 16);
4264}
4265
4266/***************************************************************************/
4267/* There follows the source form of the MAC address reading firmware */
4268/***************************************************************************/
4269#if 0
4270
4271/* Copyright 2003 Matthew T. Russotto */
4272/* But derived from the Atmel 76C502 firmware written by Atmel and */
4273/* included in "atmel wireless lan drivers" package */
4274/**
4275 This file is part of net.russotto.AtmelMACFW, hereto referred to
4276 as AtmelMACFW
4277
4278 AtmelMACFW is free software; you can redistribute it and/or modify
4279 it under the terms of the GNU General Public License version 2
4280 as published by the Free Software Foundation.
4281
4282 AtmelMACFW is distributed in the hope that it will be useful,
4283 but WITHOUT ANY WARRANTY; without even the implied warranty of
4284 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4285 GNU General Public License for more details.
4286
4287 You should have received a copy of the GNU General Public License
4288 along with AtmelMACFW; if not, write to the Free Software
4289 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
4290
4291****************************************************************************/
4292/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
4293/* It will probably work on the 76C504 and 76C502 RFMD_3COM */
4294/* It only works on SPI EEPROM versions of the card. */
4295
4296/* This firmware initializes the SPI controller and clock, reads the MAC */
4297/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
4298/* address in MR2, and sets MR3 to 0x10 to indicate it is done */
4299/* It also puts a complete copy of the EEPROM in SRAM with the offset in */
4300/* MR4, for investigational purposes (maybe we can determine chip type */
4301/* from that?) */
4302
4303 .org 0
4304 .set MRBASE, 0x8000000
4305 .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
4306 .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
4307 .set SRAM_BASE, 0x02000000
4308 .set SP_BASE, 0x0F300000
4309 .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
4310 .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
4311 .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
4312 .set STACK_BASE, 0x5600
4313 .set SP_SR, 0x10
4314 .set SP_TDRE, 2 /* status register bit -- TDR empty */
4315 .set SP_RDRF, 1 /* status register bit -- RDR full */
4316 .set SP_SWRST, 0x80
4317 .set SP_SPIEN, 0x1
4318 .set SP_CR, 0 /* control register */
4319 .set SP_MR, 4 /* mode register */
4320 .set SP_RDR, 0x08 /* Read Data Register */
4321 .set SP_TDR, 0x0C /* Transmit Data Register */
4322 .set SP_CSR0, 0x30 /* chip select registers */
4323 .set SP_CSR1, 0x34
4324 .set SP_CSR2, 0x38
4325 .set SP_CSR3, 0x3C
4326 .set NVRAM_CMD_RDSR, 5 /* read status register */
4327 .set NVRAM_CMD_READ, 3 /* read data */
4328 .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
4329 .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
4330 serial output, since SO is normally high. But it
4331 does cause 8 clock cycles and thus 8 bits to be
4332 clocked in to the chip. See Atmel's SPI
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004333 controller (e.g. AT91M55800) timing and 4K
Linus Torvalds1da177e2005-04-16 15:20:36 -07004334 SPI EEPROM manuals */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004335
Linus Torvalds1da177e2005-04-16 15:20:36 -07004336 .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
4337 .set NVRAM_IMAGE, 0x02000200
4338 .set NVRAM_LENGTH, 0x0200
4339 .set MAC_ADDRESS_MIB, SRAM_BASE
4340 .set MAC_ADDRESS_LENGTH, 6
John Daiker8830cb62009-03-08 22:18:35 -07004341 .set MAC_BOOT_FLAG, 0x10
Linus Torvalds1da177e2005-04-16 15:20:36 -07004342 .set MR1, 0
4343 .set MR2, 4
4344 .set MR3, 8
4345 .set MR4, 0xC
4346RESET_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004347 b RESET_HANDLER
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004348UNDEF_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004349 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004350SWI_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004351 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004352IABORT_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004353 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004354DABORT_VECTOR:
4355RESERVED_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004356 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004357IRQ_VECTOR:
John Daiker8830cb62009-03-08 22:18:35 -07004358 b HALT1
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004359FIQ_VECTOR:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004360 b HALT1
4361HALT1: b HALT1
4362RESET_HANDLER:
4363 mov r0, #CPSR_INITIAL
4364 msr CPSR_c, r0 /* This is probably unnecessary */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004365
Linus Torvalds1da177e2005-04-16 15:20:36 -07004366/* I'm guessing this is initializing clock generator electronics for SPI */
4367 ldr r0, =SPI_CGEN_BASE
4368 mov r1, #0
4369 mov r1, r1, lsl #3
John Daiker8830cb62009-03-08 22:18:35 -07004370 orr r1, r1, #0
Linus Torvalds1da177e2005-04-16 15:20:36 -07004371 str r1, [r0]
4372 ldr r1, [r0, #28]
4373 bic r1, r1, #16
4374 str r1, [r0, #28]
4375 mov r1, #1
4376 str r1, [r0, #8]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004377
Linus Torvalds1da177e2005-04-16 15:20:36 -07004378 ldr r0, =MRBASE
4379 mov r1, #0
4380 strh r1, [r0, #MR1]
4381 strh r1, [r0, #MR2]
4382 strh r1, [r0, #MR3]
4383 strh r1, [r0, #MR4]
4384
4385 mov sp, #STACK_BASE
4386 bl SP_INIT
4387 mov r0, #10
4388 bl DELAY9
4389 bl GET_MAC_ADDR
4390 bl GET_WHOLE_NVRAM
4391 ldr r0, =MRBASE
4392 ldr r1, =MAC_ADDRESS_MIB
4393 strh r1, [r0, #MR2]
4394 ldr r1, =NVRAM_IMAGE
4395 strh r1, [r0, #MR4]
4396 mov r1, #MAC_BOOT_FLAG
4397 strh r1, [r0, #MR3]
4398HALT2: b HALT2
4399.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
4400GET_WHOLE_NVRAM:
4401 stmdb sp!, {lr}
4402 mov r2, #0 /* 0th bytes of NVRAM */
4403 mov r3, #NVRAM_LENGTH
4404 mov r1, #0 /* not used in routine */
4405 ldr r0, =NVRAM_IMAGE
4406 bl NVRAM_XFER
4407 ldmia sp!, {lr}
4408 bx lr
4409.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004410
Linus Torvalds1da177e2005-04-16 15:20:36 -07004411.func Get_MAC_Addr, GET_MAC_ADDR
4412GET_MAC_ADDR:
4413 stmdb sp!, {lr}
4414 mov r2, #0x120 /* address of MAC Address within NVRAM */
4415 mov r3, #MAC_ADDRESS_LENGTH
4416 mov r1, #0 /* not used in routine */
4417 ldr r0, =MAC_ADDRESS_MIB
4418 bl NVRAM_XFER
4419 ldmia sp!, {lr}
4420 bx lr
4421.endfunc
4422.ltorg
4423.func Delay9, DELAY9
4424DELAY9:
4425 adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004426DELAYLOOP:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004427 beq DELAY9_done
4428 subs r0, r0, #1
4429 b DELAYLOOP
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004430DELAY9_done:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004431 bx lr
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004432.endfunc
Linus Torvalds1da177e2005-04-16 15:20:36 -07004433
4434.func SP_Init, SP_INIT
4435SP_INIT:
4436 mov r1, #SP_SWRST
4437 ldr r0, =SP_BASE
4438 str r1, [r0, #SP_CR] /* reset the SPI */
4439 mov r1, #0
4440 str r1, [r0, #SP_CR] /* release SPI from reset state */
4441 mov r1, #SP_SPIEN
4442 str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
4443 str r1, [r0, #SP_CR] /* enable the SPI */
4444
4445/* My guess would be this turns on the SPI clock */
4446 ldr r3, =SPI_CGEN_BASE
4447 ldr r1, [r3, #28]
4448 orr r1, r1, #0x2000
4449 str r1, [r3, #28]
4450
4451 ldr r1, =0x2000c01
4452 str r1, [r0, #SP_CSR0]
4453 ldr r1, =0x2000201
4454 str r1, [r0, #SP_CSR1]
4455 str r1, [r0, #SP_CSR2]
4456 str r1, [r0, #SP_CSR3]
4457 ldr r1, [r0, #SP_SR]
4458 ldr r0, [r0, #SP_RDR]
4459 bx lr
4460.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004461.func NVRAM_Init, NVRAM_INIT
Linus Torvalds1da177e2005-04-16 15:20:36 -07004462NVRAM_INIT:
4463 ldr r1, =SP_BASE
4464 ldr r0, [r1, #SP_RDR]
4465 mov r0, #NVRAM_CMD_RDSR
4466 str r0, [r1, #SP_TDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004467SP_loop1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004468 ldr r0, [r1, #SP_SR]
4469 tst r0, #SP_TDRE
4470 beq SP_loop1
4471
4472 mov r0, #SPI_8CLOCKS
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004473 str r0, [r1, #SP_TDR]
4474SP_loop2:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004475 ldr r0, [r1, #SP_SR]
4476 tst r0, #SP_TDRE
4477 beq SP_loop2
4478
4479 ldr r0, [r1, #SP_RDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004480SP_loop3:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004481 ldr r0, [r1, #SP_SR]
4482 tst r0, #SP_RDRF
4483 beq SP_loop3
4484
4485 ldr r0, [r1, #SP_RDR]
4486 and r0, r0, #255
4487 bx lr
4488.endfunc
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004489
Linus Torvalds1da177e2005-04-16 15:20:36 -07004490.func NVRAM_Xfer, NVRAM_XFER
4491 /* r0 = dest address */
4492 /* r1 = not used */
4493 /* r2 = src address within NVRAM */
4494 /* r3 = length */
4495NVRAM_XFER:
4496 stmdb sp!, {r4, r5, lr}
4497 mov r5, r0 /* save r0 (dest address) */
4498 mov r4, r3 /* save r3 (length) */
4499 mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
4500 and r0, r0, #8
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004501 add r0, r0, #NVRAM_CMD_READ
Linus Torvalds1da177e2005-04-16 15:20:36 -07004502 ldr r1, =NVRAM_SCRATCH
4503 strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
4504 strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004505_local1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004506 bl NVRAM_INIT
4507 tst r0, #NVRAM_SR_RDY
4508 bne _local1
4509 mov r0, #20
4510 bl DELAY9
4511 mov r2, r4 /* length */
4512 mov r1, r5 /* dest address */
4513 mov r0, #2 /* bytes to transfer in command */
4514 bl NVRAM_XFER2
4515 ldmia sp!, {r4, r5, lr}
4516 bx lr
4517.endfunc
4518
4519.func NVRAM_Xfer2, NVRAM_XFER2
4520NVRAM_XFER2:
4521 stmdb sp!, {r4, r5, r6, lr}
4522 ldr r4, =SP_BASE
4523 mov r3, #0
4524 cmp r0, #0
4525 bls _local2
4526 ldr r5, =NVRAM_SCRATCH
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004527_local4:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004528 ldrb r6, [r5, r3]
4529 str r6, [r4, #SP_TDR]
4530_local3:
4531 ldr r6, [r4, #SP_SR]
4532 tst r6, #SP_TDRE
4533 beq _local3
4534 add r3, r3, #1
4535 cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
4536 blo _local4
4537_local2:
4538 mov r3, #SPI_8CLOCKS
4539 str r3, [r4, #SP_TDR]
4540 ldr r0, [r4, #SP_RDR]
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004541_local5:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004542 ldr r0, [r4, #SP_SR]
4543 tst r0, #SP_RDRF
4544 beq _local5
4545 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 */
4546 mov r0, #0
4547 cmp r2, #0 /* r2 is # of bytes to copy in */
4548 bls _local6
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004549_local7:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004550 ldr r5, [r4, #SP_SR]
4551 tst r5, #SP_TDRE
4552 beq _local7
4553 str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
Carlo Perassi4d791aa2005-11-13 15:02:15 +03004554_local8:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004555 ldr r5, [r4, #SP_SR]
4556 tst r5, #SP_RDRF
4557 beq _local8
4558 ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
4559 strb r5, [r1], #1 /* postindexed */
4560 add r0, r0, #1
4561 cmp r0, r2
4562 blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
4563_local6:
4564 mov r0, #200
4565 bl DELAY9
4566 ldmia sp!, {r4, r5, r6, lr}
4567 bx lr
4568#endif