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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/wireless/atmel.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/wireless/atmel.c')
-rw-r--r--drivers/net/wireless/atmel.c4272
1 files changed, 4272 insertions, 0 deletions
diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
new file mode 100644
index 00000000000..18a7d38d2a1
--- /dev/null
+++ b/drivers/net/wireless/atmel.c
@@ -0,0 +1,4272 @@
+/*** -*- linux-c -*- **********************************************************
+
+ Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
+
+ Copyright 2000-2001 ATMEL Corporation.
+ Copyright 2003-2004 Simon Kelley.
+
+ This code was developed from version 2.1.1 of the Atmel drivers,
+ released by Atmel corp. under the GPL in December 2002. It also
+ includes code from the Linux aironet drivers (C) Benjamin Reed,
+ and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
+ extensions, (C) Jean Tourrilhes.
+
+ The firmware module for reading the MAC address of the card comes from
+ net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
+ by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
+ This file contains the module in binary form and, under the terms
+ of the GPL, in source form. The source is located at the end of the file.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This software is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Atmel wireless lan drivers; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ For all queries about this code, please contact the current author,
+ Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
+
+ Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
+ hardware used during development of this driver.
+
+******************************************************************************/
+
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/timer.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+#include <linux/fcntl.h>
+#include <linux/delay.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <linux/byteorder/generic.h>
+#include <linux/crc32.h>
+#include <linux/proc_fs.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include "ieee802_11.h"
+#include "atmel.h"
+
+#define DRIVER_MAJOR 0
+#define DRIVER_MINOR 96
+
+MODULE_AUTHOR("Simon Kelley");
+MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
+
+/* The name of the firmware file to be loaded
+ over-rides any automatic selection */
+static char *firmware = NULL;
+module_param(firmware, charp, 0);
+
+/* table of firmware file names */
+static struct {
+ AtmelFWType fw_type;
+ const char *fw_file;
+ const char *fw_file_ext;
+} fw_table[] = {
+ { ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
+ { ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
+ { ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
+ { ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
+ { ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
+ { ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
+ { ATMEL_FW_TYPE_504A_2958,"atmel_at76c504a_2958","bin" },
+ { ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
+ { ATMEL_FW_TYPE_NONE, NULL, NULL }
+};
+
+#define MAX_SSID_LENGTH 32
+#define MGMT_JIFFIES (256 * HZ / 100)
+
+#define MAX_BSS_ENTRIES 64
+
+/* registers */
+#define GCR 0x00 // (SIR0) General Configuration Register
+#define BSR 0x02 // (SIR1) Bank Switching Select Register
+#define AR 0x04
+#define DR 0x08
+#define MR1 0x12 // Mirror Register 1
+#define MR2 0x14 // Mirror Register 2
+#define MR3 0x16 // Mirror Register 3
+#define MR4 0x18 // Mirror Register 4
+
+#define GPR1 0x0c
+#define GPR2 0x0e
+#define GPR3 0x10
+//
+// Constants for the GCR register.
+//
+#define GCR_REMAP 0x0400 // Remap internal SRAM to 0
+#define GCR_SWRES 0x0080 // BIU reset (ARM and PAI are NOT reset)
+#define GCR_CORES 0x0060 // Core Reset (ARM and PAI are reset)
+#define GCR_ENINT 0x0002 // Enable Interrupts
+#define GCR_ACKINT 0x0008 // Acknowledge Interrupts
+
+#define BSS_SRAM 0x0200 // AMBA module selection --> SRAM
+#define BSS_IRAM 0x0100 // AMBA module selection --> IRAM
+//
+// Constants for the MR registers.
+//
+#define MAC_INIT_COMPLETE 0x0001 // MAC init has been completed
+#define MAC_BOOT_COMPLETE 0x0010 // MAC boot has been completed
+#define MAC_INIT_OK 0x0002 // MAC boot has been completed
+
+#define C80211_SUBTYPE_MGMT_ASS_REQUEST 0x00
+#define C80211_SUBTYPE_MGMT_ASS_RESPONSE 0x10
+#define C80211_SUBTYPE_MGMT_REASS_REQUEST 0x20
+#define C80211_SUBTYPE_MGMT_REASS_RESPONSE 0x30
+#define C80211_SUBTYPE_MGMT_ProbeRequest 0x40
+#define C80211_SUBTYPE_MGMT_ProbeResponse 0x50
+#define C80211_SUBTYPE_MGMT_BEACON 0x80
+#define C80211_SUBTYPE_MGMT_ATIM 0x90
+#define C80211_SUBTYPE_MGMT_DISASSOSIATION 0xA0
+#define C80211_SUBTYPE_MGMT_Authentication 0xB0
+#define C80211_SUBTYPE_MGMT_Deauthentication 0xC0
+
+#define C80211_MGMT_AAN_OPENSYSTEM 0x0000
+#define C80211_MGMT_AAN_SHAREDKEY 0x0001
+
+#define C80211_MGMT_CAPABILITY_ESS 0x0001 // see 802.11 p.58
+#define C80211_MGMT_CAPABILITY_IBSS 0x0002 // - " -
+#define C80211_MGMT_CAPABILITY_CFPollable 0x0004 // - " -
+#define C80211_MGMT_CAPABILITY_CFPollRequest 0x0008 // - " -
+#define C80211_MGMT_CAPABILITY_Privacy 0x0010 // - " -
+
+#define C80211_MGMT_SC_Success 0
+#define C80211_MGMT_SC_Unspecified 1
+#define C80211_MGMT_SC_SupportCapabilities 10
+#define C80211_MGMT_SC_ReassDenied 11
+#define C80211_MGMT_SC_AssDenied 12
+#define C80211_MGMT_SC_AuthAlgNotSupported 13
+#define C80211_MGMT_SC_AuthTransSeqNumError 14
+#define C80211_MGMT_SC_AuthRejectChallenge 15
+#define C80211_MGMT_SC_AuthRejectTimeout 16
+#define C80211_MGMT_SC_AssDeniedHandleAP 17
+#define C80211_MGMT_SC_AssDeniedBSSRate 18
+
+#define C80211_MGMT_ElementID_SSID 0
+#define C80211_MGMT_ElementID_SupportedRates 1
+#define C80211_MGMT_ElementID_ChallengeText 16
+#define C80211_MGMT_CAPABILITY_ShortPreamble 0x0020
+
+#define MIB_MAX_DATA_BYTES 212
+#define MIB_HEADER_SIZE 4 /* first four fields */
+
+struct get_set_mib {
+ u8 type;
+ u8 size;
+ u8 index;
+ u8 reserved;
+ u8 data[MIB_MAX_DATA_BYTES];
+};
+
+struct rx_desc {
+ u32 Next;
+ u16 MsduPos;
+ u16 MsduSize;
+
+ u8 State;
+ u8 Status;
+ u8 Rate;
+ u8 Rssi;
+ u8 LinkQuality;
+ u8 PreambleType;
+ u16 Duration;
+ u32 RxTime;
+
+};
+
+#define RX_DESC_FLAG_VALID 0x80
+#define RX_DESC_FLAG_CONSUMED 0x40
+#define RX_DESC_FLAG_IDLE 0x00
+
+#define RX_STATUS_SUCCESS 0x00
+
+#define RX_DESC_MSDU_POS_OFFSET 4
+#define RX_DESC_MSDU_SIZE_OFFSET 6
+#define RX_DESC_FLAGS_OFFSET 8
+#define RX_DESC_STATUS_OFFSET 9
+#define RX_DESC_RSSI_OFFSET 11
+#define RX_DESC_LINK_QUALITY_OFFSET 12
+#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
+#define RX_DESC_DURATION_OFFSET 14
+#define RX_DESC_RX_TIME_OFFSET 16
+
+
+struct tx_desc {
+ u32 NextDescriptor;
+ u16 TxStartOfFrame;
+ u16 TxLength;
+
+ u8 TxState;
+ u8 TxStatus;
+ u8 RetryCount;
+
+ u8 TxRate;
+
+ u8 KeyIndex;
+ u8 ChiperType;
+ u8 ChipreLength;
+ u8 Reserved1;
+
+ u8 Reserved;
+ u8 PacketType;
+ u16 HostTxLength;
+
+};
+
+
+#define TX_DESC_NEXT_OFFSET 0
+#define TX_DESC_POS_OFFSET 4
+#define TX_DESC_SIZE_OFFSET 6
+#define TX_DESC_FLAGS_OFFSET 8
+#define TX_DESC_STATUS_OFFSET 9
+#define TX_DESC_RETRY_OFFSET 10
+#define TX_DESC_RATE_OFFSET 11
+#define TX_DESC_KEY_INDEX_OFFSET 12
+#define TX_DESC_CIPHER_TYPE_OFFSET 13
+#define TX_DESC_CIPHER_LENGTH_OFFSET 14
+#define TX_DESC_PACKET_TYPE_OFFSET 17
+#define TX_DESC_HOST_LENGTH_OFFSET 18
+
+
+
+///////////////////////////////////////////////////////
+// Host-MAC interface
+///////////////////////////////////////////////////////
+
+#define TX_STATUS_SUCCESS 0x00
+
+#define TX_FIRM_OWN 0x80
+#define TX_DONE 0x40
+
+
+#define TX_ERROR 0x01
+
+#define TX_PACKET_TYPE_DATA 0x01
+#define TX_PACKET_TYPE_MGMT 0x02
+
+#define ISR_EMPTY 0x00 // no bits set in ISR
+#define ISR_TxCOMPLETE 0x01 // packet transmitted
+#define ISR_RxCOMPLETE 0x02 // packet received
+#define ISR_RxFRAMELOST 0x04 // Rx Frame lost
+#define ISR_FATAL_ERROR 0x08 // Fatal error
+#define ISR_COMMAND_COMPLETE 0x10 // command completed
+#define ISR_OUT_OF_RANGE 0x20 // command completed
+#define ISR_IBSS_MERGE 0x40 // (4.1.2.30): IBSS merge
+#define ISR_GENERIC_IRQ 0x80
+
+
+#define Local_Mib_Type 0x01
+#define Mac_Address_Mib_Type 0x02
+#define Mac_Mib_Type 0x03
+#define Statistics_Mib_Type 0x04
+#define Mac_Mgmt_Mib_Type 0x05
+#define Mac_Wep_Mib_Type 0x06
+#define Phy_Mib_Type 0x07
+#define Multi_Domain_MIB 0x08
+
+#define MAC_MGMT_MIB_CUR_BSSID_POS 14
+#define MAC_MIB_FRAG_THRESHOLD_POS 8
+#define MAC_MIB_RTS_THRESHOLD_POS 10
+#define MAC_MIB_SHORT_RETRY_POS 16
+#define MAC_MIB_LONG_RETRY_POS 17
+#define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
+#define MAC_MGMT_MIB_BEACON_PER_POS 0
+#define MAC_MGMT_MIB_STATION_ID_POS 6
+#define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
+#define MAC_MGMT_MIB_CUR_BSSID_POS 14
+#define MAC_MGMT_MIB_PS_MODE_POS 53
+#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
+#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
+#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
+#define PHY_MIB_CHANNEL_POS 14
+#define PHY_MIB_RATE_SET_POS 20
+#define PHY_MIB_REG_DOMAIN_POS 26
+#define LOCAL_MIB_AUTO_TX_RATE_POS 3
+#define LOCAL_MIB_SSID_SIZE 5
+#define LOCAL_MIB_TX_PROMISCUOUS_POS 6
+#define LOCAL_MIB_TX_MGMT_RATE_POS 7
+#define LOCAL_MIB_TX_CONTROL_RATE_POS 8
+#define LOCAL_MIB_PREAMBLE_TYPE 9
+#define MAC_ADDR_MIB_MAC_ADDR_POS 0
+
+
+#define CMD_Set_MIB_Vars 0x01
+#define CMD_Get_MIB_Vars 0x02
+#define CMD_Scan 0x03
+#define CMD_Join 0x04
+#define CMD_Start 0x05
+#define CMD_EnableRadio 0x06
+#define CMD_DisableRadio 0x07
+#define CMD_SiteSurvey 0x0B
+
+#define CMD_STATUS_IDLE 0x00
+#define CMD_STATUS_COMPLETE 0x01
+#define CMD_STATUS_UNKNOWN 0x02
+#define CMD_STATUS_INVALID_PARAMETER 0x03
+#define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
+#define CMD_STATUS_TIME_OUT 0x07
+#define CMD_STATUS_IN_PROGRESS 0x08
+#define CMD_STATUS_REJECTED_RADIO_OFF 0x09
+#define CMD_STATUS_HOST_ERROR 0xFF
+#define CMD_STATUS_BUSY 0xFE
+
+
+#define CMD_BLOCK_COMMAND_OFFSET 0
+#define CMD_BLOCK_STATUS_OFFSET 1
+#define CMD_BLOCK_PARAMETERS_OFFSET 4
+
+#define SCAN_OPTIONS_SITE_SURVEY 0x80
+
+#define MGMT_FRAME_BODY_OFFSET 24
+#define MAX_AUTHENTICATION_RETRIES 3
+#define MAX_ASSOCIATION_RETRIES 3
+
+#define AUTHENTICATION_RESPONSE_TIME_OUT 1000
+
+#define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
+#define LOOP_RETRY_LIMIT 500000
+
+#define ACTIVE_MODE 1
+#define PS_MODE 2
+
+#define MAX_ENCRYPTION_KEYS 4
+#define MAX_ENCRYPTION_KEY_SIZE 40
+
+///////////////////////////////////////////////////////////////////////////
+// 802.11 related definitions
+///////////////////////////////////////////////////////////////////////////
+
+//
+// Regulatory Domains
+//
+
+#define REG_DOMAIN_FCC 0x10 //Channels 1-11 USA
+#define REG_DOMAIN_DOC 0x20 //Channel 1-11 Canada
+#define REG_DOMAIN_ETSI 0x30 //Channel 1-13 Europe (ex Spain/France)
+#define REG_DOMAIN_SPAIN 0x31 //Channel 10-11 Spain
+#define REG_DOMAIN_FRANCE 0x32 //Channel 10-13 France
+#define REG_DOMAIN_MKK 0x40 //Channel 14 Japan
+#define REG_DOMAIN_MKK1 0x41 //Channel 1-14 Japan(MKK1)
+#define REG_DOMAIN_ISRAEL 0x50 //Channel 3-9 ISRAEL
+
+#define BSS_TYPE_AD_HOC 1
+#define BSS_TYPE_INFRASTRUCTURE 2
+
+#define SCAN_TYPE_ACTIVE 0
+#define SCAN_TYPE_PASSIVE 1
+
+#define LONG_PREAMBLE 0
+#define SHORT_PREAMBLE 1
+#define AUTO_PREAMBLE 2
+
+#define DATA_FRAME_WS_HEADER_SIZE 30
+
+/* promiscuous mode control */
+#define PROM_MODE_OFF 0x0
+#define PROM_MODE_UNKNOWN 0x1
+#define PROM_MODE_CRC_FAILED 0x2
+#define PROM_MODE_DUPLICATED 0x4
+#define PROM_MODE_MGMT 0x8
+#define PROM_MODE_CTRL 0x10
+#define PROM_MODE_BAD_PROTOCOL 0x20
+
+
+#define IFACE_INT_STATUS_OFFSET 0
+#define IFACE_INT_MASK_OFFSET 1
+#define IFACE_LOCKOUT_HOST_OFFSET 2
+#define IFACE_LOCKOUT_MAC_OFFSET 3
+#define IFACE_FUNC_CTRL_OFFSET 28
+#define IFACE_MAC_STAT_OFFSET 30
+#define IFACE_GENERIC_INT_TYPE_OFFSET 32
+
+#define CIPHER_SUITE_NONE 0
+#define CIPHER_SUITE_WEP_64 1
+#define CIPHER_SUITE_TKIP 2
+#define CIPHER_SUITE_AES 3
+#define CIPHER_SUITE_CCX 4
+#define CIPHER_SUITE_WEP_128 5
+
+//
+// IFACE MACROS & definitions
+//
+//
+
+// FuncCtrl field:
+//
+#define FUNC_CTRL_TxENABLE 0x10
+#define FUNC_CTRL_RxENABLE 0x20
+#define FUNC_CTRL_INIT_COMPLETE 0x01
+
+/* A stub firmware image which reads the MAC address from NVRAM on the card.
+ For copyright information and source see the end of this file. */
+static u8 mac_reader[] = {
+ 0x06,0x00,0x00,0xea,0x04,0x00,0x00,0xea,0x03,0x00,0x00,0xea,0x02,0x00,0x00,0xea,
+ 0x01,0x00,0x00,0xea,0x00,0x00,0x00,0xea,0xff,0xff,0xff,0xea,0xfe,0xff,0xff,0xea,
+ 0xd3,0x00,0xa0,0xe3,0x00,0xf0,0x21,0xe1,0x0e,0x04,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
+ 0x81,0x11,0xa0,0xe1,0x00,0x10,0x81,0xe3,0x00,0x10,0x80,0xe5,0x1c,0x10,0x90,0xe5,
+ 0x10,0x10,0xc1,0xe3,0x1c,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,0x08,0x10,0x80,0xe5,
+ 0x02,0x03,0xa0,0xe3,0x00,0x10,0xa0,0xe3,0xb0,0x10,0xc0,0xe1,0xb4,0x10,0xc0,0xe1,
+ 0xb8,0x10,0xc0,0xe1,0xbc,0x10,0xc0,0xe1,0x56,0xdc,0xa0,0xe3,0x21,0x00,0x00,0xeb,
+ 0x0a,0x00,0xa0,0xe3,0x1a,0x00,0x00,0xeb,0x10,0x00,0x00,0xeb,0x07,0x00,0x00,0xeb,
+ 0x02,0x03,0xa0,0xe3,0x02,0x14,0xa0,0xe3,0xb4,0x10,0xc0,0xe1,0x4c,0x10,0x9f,0xe5,
+ 0xbc,0x10,0xc0,0xe1,0x10,0x10,0xa0,0xe3,0xb8,0x10,0xc0,0xe1,0xfe,0xff,0xff,0xea,
+ 0x00,0x40,0x2d,0xe9,0x00,0x20,0xa0,0xe3,0x02,0x3c,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
+ 0x28,0x00,0x9f,0xe5,0x37,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
+ 0x00,0x40,0x2d,0xe9,0x12,0x2e,0xa0,0xe3,0x06,0x30,0xa0,0xe3,0x00,0x10,0xa0,0xe3,
+ 0x02,0x04,0xa0,0xe3,0x2f,0x00,0x00,0xeb,0x00,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,
+ 0x00,0x02,0x00,0x02,0x80,0x01,0x90,0xe0,0x01,0x00,0x00,0x0a,0x01,0x00,0x50,0xe2,
+ 0xfc,0xff,0xff,0xea,0x1e,0xff,0x2f,0xe1,0x80,0x10,0xa0,0xe3,0xf3,0x06,0xa0,0xe3,
+ 0x00,0x10,0x80,0xe5,0x00,0x10,0xa0,0xe3,0x00,0x10,0x80,0xe5,0x01,0x10,0xa0,0xe3,
+ 0x04,0x10,0x80,0xe5,0x00,0x10,0x80,0xe5,0x0e,0x34,0xa0,0xe3,0x1c,0x10,0x93,0xe5,
+ 0x02,0x1a,0x81,0xe3,0x1c,0x10,0x83,0xe5,0x58,0x11,0x9f,0xe5,0x30,0x10,0x80,0xe5,
+ 0x54,0x11,0x9f,0xe5,0x34,0x10,0x80,0xe5,0x38,0x10,0x80,0xe5,0x3c,0x10,0x80,0xe5,
+ 0x10,0x10,0x90,0xe5,0x08,0x00,0x90,0xe5,0x1e,0xff,0x2f,0xe1,0xf3,0x16,0xa0,0xe3,
+ 0x08,0x00,0x91,0xe5,0x05,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,0x10,0x00,0x91,0xe5,
+ 0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0xff,0x00,0xa0,0xe3,0x0c,0x00,0x81,0xe5,
+ 0x10,0x00,0x91,0xe5,0x02,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
+ 0x10,0x00,0x91,0xe5,0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x91,0xe5,
+ 0xff,0x00,0x00,0xe2,0x1e,0xff,0x2f,0xe1,0x30,0x40,0x2d,0xe9,0x00,0x50,0xa0,0xe1,
+ 0x03,0x40,0xa0,0xe1,0xa2,0x02,0xa0,0xe1,0x08,0x00,0x00,0xe2,0x03,0x00,0x80,0xe2,
+ 0xd8,0x10,0x9f,0xe5,0x00,0x00,0xc1,0xe5,0x01,0x20,0xc1,0xe5,0xe2,0xff,0xff,0xeb,
+ 0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x1a,0x14,0x00,0xa0,0xe3,0xc4,0xff,0xff,0xeb,
+ 0x04,0x20,0xa0,0xe1,0x05,0x10,0xa0,0xe1,0x02,0x00,0xa0,0xe3,0x01,0x00,0x00,0xeb,
+ 0x30,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x70,0x40,0x2d,0xe9,0xf3,0x46,0xa0,0xe3,
+ 0x00,0x30,0xa0,0xe3,0x00,0x00,0x50,0xe3,0x08,0x00,0x00,0x9a,0x8c,0x50,0x9f,0xe5,
+ 0x03,0x60,0xd5,0xe7,0x0c,0x60,0x84,0xe5,0x10,0x60,0x94,0xe5,0x02,0x00,0x16,0xe3,
+ 0xfc,0xff,0xff,0x0a,0x01,0x30,0x83,0xe2,0x00,0x00,0x53,0xe1,0xf7,0xff,0xff,0x3a,
+ 0xff,0x30,0xa0,0xe3,0x0c,0x30,0x84,0xe5,0x08,0x00,0x94,0xe5,0x10,0x00,0x94,0xe5,
+ 0x01,0x00,0x10,0xe3,0xfc,0xff,0xff,0x0a,0x08,0x00,0x94,0xe5,0x00,0x00,0xa0,0xe3,
+ 0x00,0x00,0x52,0xe3,0x0b,0x00,0x00,0x9a,0x10,0x50,0x94,0xe5,0x02,0x00,0x15,0xe3,
+ 0xfc,0xff,0xff,0x0a,0x0c,0x30,0x84,0xe5,0x10,0x50,0x94,0xe5,0x01,0x00,0x15,0xe3,
+ 0xfc,0xff,0xff,0x0a,0x08,0x50,0x94,0xe5,0x01,0x50,0xc1,0xe4,0x01,0x00,0x80,0xe2,
+ 0x02,0x00,0x50,0xe1,0xf3,0xff,0xff,0x3a,0xc8,0x00,0xa0,0xe3,0x98,0xff,0xff,0xeb,
+ 0x70,0x40,0xbd,0xe8,0x1e,0xff,0x2f,0xe1,0x01,0x0c,0x00,0x02,0x01,0x02,0x00,0x02,
+ 0x00,0x01,0x00,0x02
+};
+
+struct atmel_private {
+ void *card; /* Bus dependent stucture varies for PCcard */
+ int (*present_callback)(void *); /* And callback which uses it */
+ char firmware_id[32];
+ AtmelFWType firmware_type;
+ u8 *firmware;
+ int firmware_length;
+ struct timer_list management_timer;
+ struct net_device *dev;
+ struct device *sys_dev;
+ struct iw_statistics wstats;
+ struct net_device_stats stats; // device stats
+ spinlock_t irqlock, timerlock; // spinlocks
+ enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
+ enum {
+ CARD_TYPE_PARALLEL_FLASH,
+ CARD_TYPE_SPI_FLASH,
+ CARD_TYPE_EEPROM
+ } card_type;
+ int do_rx_crc; /* If we need to CRC incoming packets */
+ int probe_crc; /* set if we don't yet know */
+ int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
+ u16 rx_desc_head;
+ u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
+ u16 tx_free_mem, tx_buff_head, tx_buff_tail;
+
+ u16 frag_seq, frag_len, frag_no;
+ u8 frag_source[6];
+
+ u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
+ u8 group_cipher_suite, pairwise_cipher_suite;
+ u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
+ int wep_key_len[MAX_ENCRYPTION_KEYS];
+ int use_wpa, radio_on_broken; /* firmware dependent stuff. */
+
+ u16 host_info_base;
+ struct host_info_struct {
+ /* NB this is matched to the hardware, don't change. */
+ u8 volatile int_status;
+ u8 volatile int_mask;
+ u8 volatile lockout_host;
+ u8 volatile lockout_mac;
+
+ u16 tx_buff_pos;
+ u16 tx_buff_size;
+ u16 tx_desc_pos;
+ u16 tx_desc_count;
+
+ u16 rx_buff_pos;
+ u16 rx_buff_size;
+ u16 rx_desc_pos;
+ u16 rx_desc_count;
+
+ u16 build_version;
+ u16 command_pos;
+
+ u16 major_version;
+ u16 minor_version;
+
+ u16 func_ctrl;
+ u16 mac_status;
+ u16 generic_IRQ_type;
+ u8 reserved[2];
+ } host_info;
+
+ enum {
+ STATION_STATE_SCANNING,
+ STATION_STATE_JOINNING,
+ STATION_STATE_AUTHENTICATING,
+ STATION_STATE_ASSOCIATING,
+ STATION_STATE_READY,
+ STATION_STATE_REASSOCIATING,
+ STATION_STATE_DOWN,
+ STATION_STATE_MGMT_ERROR
+ } station_state;
+
+ int operating_mode, power_mode;
+ time_t last_qual;
+ int beacons_this_sec;
+ int channel;
+ int reg_domain, config_reg_domain;
+ int tx_rate;
+ int auto_tx_rate;
+ int rts_threshold;
+ int frag_threshold;
+ int long_retry, short_retry;
+ int preamble;
+ int default_beacon_period, beacon_period, listen_interval;
+ int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
+ int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
+ enum {
+ SITE_SURVEY_IDLE,
+ SITE_SURVEY_IN_PROGRESS,
+ SITE_SURVEY_COMPLETED
+ } site_survey_state;
+ time_t last_survey;
+
+ int station_was_associated, station_is_associated;
+ int fast_scan;
+
+ struct bss_info {
+ int channel;
+ int SSIDsize;
+ int RSSI;
+ int UsingWEP;
+ int preamble;
+ int beacon_period;
+ int BSStype;
+ u8 BSSID[6];
+ u8 SSID[MAX_SSID_LENGTH];
+ } BSSinfo[MAX_BSS_ENTRIES];
+ int BSS_list_entries, current_BSS;
+ int connect_to_any_BSS;
+ int SSID_size, new_SSID_size;
+ u8 CurrentBSSID[6], BSSID[6];
+ u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
+ u64 last_beacon_timestamp;
+ u8 rx_buf[MAX_WIRELESS_BODY];
+
+};
+
+static u8 atmel_basic_rates[4] = {0x82,0x84,0x0b,0x16};
+
+static const struct {
+ int reg_domain;
+ int min, max;
+ char *name;
+} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
+ { REG_DOMAIN_DOC, 1, 11, "Canada" },
+ { REG_DOMAIN_ETSI, 1, 13, "Europe" },
+ { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
+ { REG_DOMAIN_FRANCE, 10, 13, "France" },
+ { REG_DOMAIN_MKK, 14, 14, "MKK" },
+ { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
+ { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };
+
+static void build_wpa_mib(struct atmel_private *priv);
+static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len);
+static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len);
+static void atmel_set_gcr(struct net_device *dev, u16 mask);
+static void atmel_clear_gcr(struct net_device *dev, u16 mask);
+static int atmel_lock_mac(struct atmel_private *priv);
+static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
+static void atmel_command_irq(struct atmel_private *priv);
+static int atmel_validate_channel(struct atmel_private *priv, int channel);
+static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u16 frame_len, u8 rssi);
+static void atmel_management_timer(u_long a);
+static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
+static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
+static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u8 *body, int body_len);
+
+static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
+static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data);
+static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data);
+static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
+static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len);
+static void atmel_scan(struct atmel_private *priv, int specific_ssid);
+static void atmel_join_bss(struct atmel_private *priv, int bss_index);
+static void atmel_smooth_qual(struct atmel_private *priv);
+static void atmel_writeAR(struct net_device *dev, u16 data);
+static int probe_atmel_card(struct net_device *dev);
+static int reset_atmel_card(struct net_device *dev );
+static void atmel_enter_state(struct atmel_private *priv, int new_state);
+int atmel_open (struct net_device *dev);
+
+static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
+{
+ return priv->host_info_base + offset;
+}
+
+static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
+{
+ return priv->host_info.command_pos + offset;
+}
+
+static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
+{
+ return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
+}
+
+static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
+{
+ return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
+}
+
+static inline u8 atmel_read8(struct net_device *dev, u16 offset)
+{
+ return inb(dev->base_addr + offset);
+}
+
+static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
+{
+ outb(data, dev->base_addr + offset);
+}
+
+static inline u16 atmel_read16(struct net_device *dev, u16 offset)
+{
+ return inw(dev->base_addr + offset);
+}
+
+static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
+{
+ outw(data, dev->base_addr + offset);
+}
+
+static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
+{
+ atmel_writeAR(priv->dev, pos);
+ return atmel_read8(priv->dev, DR);
+}
+
+static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
+{
+ atmel_writeAR(priv->dev, pos);
+ atmel_write8(priv->dev, DR, data);
+}
+
+static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
+{
+ atmel_writeAR(priv->dev, pos);
+ return atmel_read16(priv->dev, DR);
+}
+
+static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
+{
+ atmel_writeAR(priv->dev, pos);
+ atmel_write16(priv->dev, DR, data);
+}
+
+static const struct iw_handler_def atmel_handler_def;
+
+static void tx_done_irq(struct atmel_private *priv)
+{
+ int i;
+
+ for (i = 0;
+ atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
+ i < priv->host_info.tx_desc_count;
+ i++) {
+
+ u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
+ u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
+ u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));
+
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);
+
+ priv->tx_free_mem += msdu_size;
+ priv->tx_desc_free++;
+
+ if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
+ priv->tx_buff_head = 0;
+ else
+ priv->tx_buff_head += msdu_size;
+
+ if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
+ priv->tx_desc_head++ ;
+ else
+ priv->tx_desc_head = 0;
+
+ if (type == TX_PACKET_TYPE_DATA) {
+ if (status == TX_STATUS_SUCCESS)
+ priv->stats.tx_packets++;
+ else
+ priv->stats.tx_errors++;
+ netif_wake_queue(priv->dev);
+ }
+ }
+}
+
+static u16 find_tx_buff(struct atmel_private *priv, u16 len)
+{
+ u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;
+
+ if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
+ return 0;
+
+ if (bottom_free >= len)
+ return priv->host_info.tx_buff_pos + priv->tx_buff_tail;
+
+ if (priv->tx_free_mem - bottom_free >= len) {
+ priv->tx_buff_tail = 0;
+ return priv->host_info.tx_buff_pos;
+ }
+
+ return 0;
+}
+
+static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, u16 len, u16 buff, u8 type)
+{
+ atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
+ atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
+ if (!priv->use_wpa)
+ atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
+ if (priv->use_wpa) {
+ int cipher_type, cipher_length;
+ if (is_bcast) {
+ cipher_type = priv->group_cipher_suite;
+ if (cipher_type == CIPHER_SUITE_WEP_64 ||
+ cipher_type == CIPHER_SUITE_WEP_128 )
+ cipher_length = 8;
+ else if (cipher_type == CIPHER_SUITE_TKIP)
+ cipher_length = 12;
+ else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
+ priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
+ cipher_type = priv->pairwise_cipher_suite;
+ cipher_length = 8;
+ } else {
+ cipher_type = CIPHER_SUITE_NONE;
+ cipher_length = 0;
+ }
+ } else {
+ cipher_type = priv->pairwise_cipher_suite;
+ if (cipher_type == CIPHER_SUITE_WEP_64 ||
+ cipher_type == CIPHER_SUITE_WEP_128 )
+ cipher_length = 8;
+ else if (cipher_type == CIPHER_SUITE_TKIP)
+ cipher_length = 12;
+ else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
+ priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
+ cipher_type = priv->group_cipher_suite;
+ cipher_length = 8;
+ } else {
+ cipher_type = CIPHER_SUITE_NONE;
+ cipher_length = 0;
+ }
+ }
+
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
+ cipher_type);
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
+ cipher_length);
+ }
+ atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
+ if (priv->tx_desc_previous != priv->tx_desc_tail)
+ atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
+ priv->tx_desc_previous = priv->tx_desc_tail;
+ if (priv->tx_desc_tail < (priv->host_info.tx_desc_count -1 ))
+ priv->tx_desc_tail++;
+ else
+ priv->tx_desc_tail = 0;
+ priv->tx_desc_free--;
+ priv->tx_free_mem -= len;
+
+}
+
+static int start_tx (struct sk_buff *skb, struct net_device *dev)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ struct ieee802_11_hdr header;
+ unsigned long flags;
+ u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
+ u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
+
+ if (priv->card && priv->present_callback &&
+ !(*priv->present_callback)(priv->card)) {
+ priv->stats.tx_errors++;
+ dev_kfree_skb(skb);
+ return 0;
+ }
+
+ if (priv->station_state != STATION_STATE_READY) {
+ priv->stats.tx_errors++;
+ dev_kfree_skb(skb);
+ return 0;
+ }
+
+ /* first ensure the timer func cannot run */
+ spin_lock_bh(&priv->timerlock);
+ /* then stop the hardware ISR */
+ spin_lock_irqsave(&priv->irqlock, flags);
+ /* nb doing the above in the opposite order will deadlock */
+
+ /* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
+ 12 first bytes (containing DA/SA) and put them in the appropriate fields of
+ the Wireless Header. Thus the packet length is then the initial + 18 (+30-12) */
+
+ if (!(buff = find_tx_buff(priv, len + 18))) {
+ priv->stats.tx_dropped++;
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+ spin_unlock_bh(&priv->timerlock);
+ netif_stop_queue(dev);
+ return 1;
+ }
+
+ frame_ctl = IEEE802_11_FTYPE_DATA;
+ header.duration_id = 0;
+ header.seq_ctl = 0;
+ if (priv->wep_is_on)
+ frame_ctl |= IEEE802_11_FCTL_WEP;
+ if (priv->operating_mode == IW_MODE_ADHOC) {
+ memcpy(&header.addr1, skb->data, 6);
+ memcpy(&header.addr2, dev->dev_addr, 6);
+ memcpy(&header.addr3, priv->BSSID, 6);
+ } else {
+ frame_ctl |= IEEE802_11_FCTL_TODS;
+ memcpy(&header.addr1, priv->CurrentBSSID, 6);
+ memcpy(&header.addr2, dev->dev_addr, 6);
+ memcpy(&header.addr3, skb->data, 6);
+ }
+
+ if (priv->use_wpa)
+ memcpy(&header.addr4, SNAP_RFC1024, 6);
+
+ header.frame_ctl = cpu_to_le16(frame_ctl);
+ /* Copy the wireless header into the card */
+ atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
+ /* Copy the packet sans its 802.3 header addresses which have been replaced */
+ atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
+ priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;
+
+ /* low bit of first byte of destination tells us if broadcast */
+ tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
+ dev->trans_start = jiffies;
+ priv->stats.tx_bytes += len;
+
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+ spin_unlock_bh(&priv->timerlock);
+ dev_kfree_skb(skb);
+
+ return 0;
+}
+
+static void atmel_transmit_management_frame(struct atmel_private *priv,
+ struct ieee802_11_hdr *header,
+ u8 *body, int body_len)
+{
+ u16 buff;
+ int len = MGMT_FRAME_BODY_OFFSET + body_len;
+
+ if (!(buff = find_tx_buff(priv, len)))
+ return;
+
+ atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
+ atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
+ priv->tx_buff_tail += len;
+ tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
+}
+
+static void fast_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u16 msdu_size, u16 rx_packet_loc, u32 crc)
+{
+ /* fast path: unfragmented packet copy directly into skbuf */
+ u8 mac4[6];
+ struct sk_buff *skb;
+ unsigned char *skbp;
+
+ /* get the final, mac 4 header field, this tells us encapsulation */
+ atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
+ msdu_size -= 6;
+
+ if (priv->do_rx_crc) {
+ crc = crc32_le(crc, mac4, 6);
+ msdu_size -= 4;
+ }
+
+ if (!(skb = dev_alloc_skb(msdu_size + 14))) {
+ priv->stats.rx_dropped++;
+ return;
+ }
+
+ skb_reserve(skb, 2);
+ skbp = skb_put(skb, msdu_size + 12);
+ atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);
+
+ if (priv->do_rx_crc) {
+ u32 netcrc;
+ crc = crc32_le(crc, skbp + 12, msdu_size);
+ atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
+ if ((crc ^ 0xffffffff) != netcrc) {
+ priv->stats.rx_crc_errors++;
+ dev_kfree_skb(skb);
+ return;
+ }
+ }
+
+ memcpy(skbp, header->addr1, 6); /* destination address */
+ if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ memcpy(&skbp[6], header->addr3, 6);
+ else
+ memcpy(&skbp[6], header->addr2, 6); /* source address */
+
+ priv->dev->last_rx=jiffies;
+ skb->dev = priv->dev;
+ skb->protocol = eth_type_trans(skb, priv->dev);
+ skb->ip_summed = CHECKSUM_NONE;
+ netif_rx(skb);
+ priv->stats.rx_bytes += 12 + msdu_size;
+ priv->stats.rx_packets++;
+}
+
+/* Test to see if the packet in card memory at packet_loc has a valid CRC
+ It doesn't matter that this is slow: it is only used to proble the first few packets. */
+static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
+{
+ int i = msdu_size - 4;
+ u32 netcrc, crc = 0xffffffff;
+
+ if (msdu_size < 4)
+ return 0;
+
+ atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);
+
+ atmel_writeAR(priv->dev, packet_loc);
+ while (i--) {
+ u8 octet = atmel_read8(priv->dev, DR);