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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/wireless/atmel.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
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 000000000000..18a7d38d2a13
--- /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);
+ crc = crc32_le(crc, &octet, 1);
+ }
+
+ return (crc ^ 0xffffffff) == netcrc;
+}
+
+static void frag_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
+{
+ u8 mac4[6];
+ u8 source[6];
+ struct sk_buff *skb;
+
+ if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ memcpy(source, header->addr3, 6);
+ else
+ memcpy(source, header->addr2, 6);
+
+ rx_packet_loc += 24; /* skip header */
+
+ if (priv->do_rx_crc)
+ msdu_size -= 4;
+
+ if (frag_no == 0) { /* first fragment */
+ atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
+ msdu_size -= 6;
+ rx_packet_loc += 6;
+
+ if (priv->do_rx_crc)
+ crc = crc32_le(crc, mac4, 6);
+
+ priv->frag_seq = seq_no;
+ priv->frag_no = 1;
+ priv->frag_len = msdu_size;
+ memcpy(priv->frag_source, source, 6);
+ memcpy(&priv->rx_buf[6], source, 6);
+ memcpy(priv->rx_buf, header->addr1, 6);
+
+ atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);
+
+ if (priv->do_rx_crc) {
+ u32 netcrc;
+ crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
+ atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
+ if ((crc ^ 0xffffffff) != netcrc) {
+ priv->stats.rx_crc_errors++;
+ memset(priv->frag_source, 0xff, 6);
+ }
+ }
+
+ } else if (priv->frag_no == frag_no &&
+ priv->frag_seq == seq_no &&
+ memcmp(priv->frag_source, source, 6) == 0) {
+
+ atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
+ rx_packet_loc, msdu_size);
+ if (priv->do_rx_crc) {
+ u32 netcrc;
+ crc = crc32_le(crc,
+ &priv->rx_buf[12 + priv->frag_len],
+ msdu_size);
+ atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
+ if ((crc ^ 0xffffffff) != netcrc) {
+ priv->stats.rx_crc_errors++;
+ memset(priv->frag_source, 0xff, 6);
+ more_frags = 1; /* don't send broken assembly */
+ }
+ }
+
+ priv->frag_len += msdu_size;
+ priv->frag_no++;
+
+ if (!more_frags) { /* last one */
+ memset(priv->frag_source, 0xff, 6);
+ if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
+ priv->stats.rx_dropped++;
+ } else {
+ skb_reserve(skb, 2);
+ memcpy(skb_put(skb, priv->frag_len + 12),
+ priv->rx_buf,
+ priv->frag_len + 12);
+ 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 += priv->frag_len + 12;
+ priv->stats.rx_packets++;
+ }
+ }
+
+ } else
+ priv->wstats.discard.fragment++;
+}
+
+static void rx_done_irq(struct atmel_private *priv)
+{
+ int i;
+ struct ieee802_11_hdr header;
+
+ for (i = 0;
+ atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
+ i < priv->host_info.rx_desc_count;
+ i++) {
+
+ u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
+ u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
+ u32 crc = 0xffffffff;
+
+ if (status != RX_STATUS_SUCCESS) {
+ if (status == 0xc1) /* determined by experiment */
+ priv->wstats.discard.nwid++;
+ else
+ priv->stats.rx_errors++;
+ goto next;
+ }
+
+ msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
+ rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
+
+ if (msdu_size < 30) {
+ priv->stats.rx_errors++;
+ goto next;
+ }
+
+ /* Get header as far as end of seq_ctl */
+ atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
+ frame_ctl = le16_to_cpu(header.frame_ctl);
+ seq_control = le16_to_cpu(header.seq_ctl);
+
+ /* probe for CRC use here if needed once five packets have arrived with
+ the same crc status, we assume we know what's happening and stop probing */
+ if (priv->probe_crc) {
+ if (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP)) {
+ priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
+ } else {
+ priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
+ }
+ if (priv->do_rx_crc) {
+ if (priv->crc_ok_cnt++ > 5)
+ priv->probe_crc = 0;
+ } else {
+ if (priv->crc_ko_cnt++ > 5)
+ priv->probe_crc = 0;
+ }
+ }
+
+ /* don't CRC header when WEP in use */
+ if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP))) {
+ crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
+ }
+ msdu_size -= 24; /* header */
+
+ if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_DATA) {
+
+ int more_fragments = frame_ctl & IEEE802_11_FCTL_MOREFRAGS;
+ u8 packet_fragment_no = seq_control & IEEE802_11_SCTL_FRAG;
+ u16 packet_sequence_no = (seq_control & IEEE802_11_SCTL_SEQ) >> 4;
+
+ if (!more_fragments && packet_fragment_no == 0 ) {
+ fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
+ } else {
+ frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
+ packet_sequence_no, packet_fragment_no, more_fragments);
+ }
+ }
+
+ if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_MGMT) {
+ /* copy rest of packet into buffer */
+ atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
+
+ /* we use the same buffer for frag reassembly and control packets */
+ memset(priv->frag_source, 0xff, 6);
+
+ if (priv->do_rx_crc) {
+ /* last 4 octets is crc */
+ msdu_size -= 4;
+ crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
+ if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
+ priv->stats.rx_crc_errors++;
+ goto next;
+ }
+ }
+
+ atmel_management_frame(priv, &header, msdu_size,
+ atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
+ }
+
+ next:
+ /* release descriptor */
+ atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);
+
+ if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
+ priv->rx_desc_head++;
+ else
+ priv->rx_desc_head = 0;
+ }
+}
+
+static irqreturn_t service_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct atmel_private *priv = netdev_priv(dev);
+ u8 isr;
+ int i = -1;
+ static u8 irq_order[] = {
+ ISR_OUT_OF_RANGE,
+ ISR_RxCOMPLETE,
+ ISR_TxCOMPLETE,
+ ISR_RxFRAMELOST,
+ ISR_FATAL_ERROR,
+ ISR_COMMAND_COMPLETE,
+ ISR_IBSS_MERGE,
+ ISR_GENERIC_IRQ
+ };
+
+
+ if (priv->card && priv->present_callback &&
+ !(*priv->present_callback)(priv->card))
+ return IRQ_HANDLED;
+
+ /* In this state upper-level code assumes it can mess with
+ the card unhampered by interrupts which may change register state.
+ Note that even though the card shouldn't generate interrupts
+ the inturrupt line may be shared. This allows card setup
+ to go on without disabling interrupts for a long time. */
+ if (priv->station_state == STATION_STATE_DOWN)
+ return IRQ_NONE;
+
+ atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
+
+ while (1) {
+ if (!atmel_lock_mac(priv)) {
+ /* failed to contact card */
+ printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
+ return IRQ_HANDLED;
+ }
+
+ isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
+
+ if (!isr) {
+ atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
+ return i == -1 ? IRQ_NONE : IRQ_HANDLED;
+ }
+
+ atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */
+
+ for (i = 0; i < sizeof(irq_order)/sizeof(u8); i++)
+ if (isr & irq_order[i])
+ break;
+
+ if (!atmel_lock_mac(priv)) {
+ /* failed to contact card */
+ printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
+ return IRQ_HANDLED;
+ }
+
+ isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
+ isr ^= irq_order[i];
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
+
+ switch (irq_order[i]) {
+
+ case ISR_OUT_OF_RANGE:
+ if (priv->operating_mode == IW_MODE_INFRA &&
+ priv->station_state == STATION_STATE_READY) {
+ priv->station_is_associated = 0;
+ atmel_scan(priv, 1);
+ }
+ break;
+
+ case ISR_RxFRAMELOST:
+ priv->wstats.discard.misc++;
+ /* fall through */
+ case ISR_RxCOMPLETE:
+ rx_done_irq(priv);
+ break;
+
+ case ISR_TxCOMPLETE:
+ tx_done_irq(priv);
+ break;
+
+ case ISR_FATAL_ERROR:
+ printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ break;
+
+ case ISR_COMMAND_COMPLETE:
+ atmel_command_irq(priv);
+ break;
+
+ case ISR_IBSS_MERGE:
+ atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
+ priv->CurrentBSSID, 6);
+ /* The WPA stuff cares about the current AP address */
+ if (priv->use_wpa)
+ build_wpa_mib(priv);
+ break;
+ case ISR_GENERIC_IRQ:
+ printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
+ break;
+ }
+ }
+}
+
+
+static struct net_device_stats *atmel_get_stats (struct net_device *dev)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ return &priv->stats;
+}
+
+static struct iw_statistics *atmel_get_wireless_stats (struct net_device *dev)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* update the link quality here in case we are seeing no beacons
+ at all to drive the process */
+ atmel_smooth_qual(priv);
+
+ priv->wstats.status = priv->station_state;
+
+ if (priv->operating_mode == IW_MODE_INFRA) {
+ if (priv->station_state != STATION_STATE_READY) {
+ priv->wstats.qual.qual = 0;
+ priv->wstats.qual.level = 0;
+ priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
+ | IW_QUAL_LEVEL_INVALID);
+ }
+ priv->wstats.qual.noise = 0;
+ priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
+ } else {
+ /* Quality levels cannot be determined in ad-hoc mode,
+ because we can 'hear' more that one remote station. */
+ priv->wstats.qual.qual = 0;
+ priv->wstats.qual.level = 0;
+ priv->wstats.qual.noise = 0;
+ priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
+ | IW_QUAL_LEVEL_INVALID
+ | IW_QUAL_NOISE_INVALID;
+ priv->wstats.miss.beacon = 0;
+ }
+
+ return (&priv->wstats);
+}
+
+static int atmel_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if ((new_mtu < 68) || (new_mtu > 2312))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static int atmel_set_mac_address(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+
+ memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
+ return atmel_open(dev);
+}
+
+EXPORT_SYMBOL(atmel_open);
+
+int atmel_open (struct net_device *dev)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int i, channel;
+
+ /* any scheduled timer is no longer needed and might screw things up.. */
+ del_timer_sync(&priv->management_timer);
+
+ /* Interrupts will not touch the card once in this state... */
+ priv->station_state = STATION_STATE_DOWN;
+
+ if (priv->new_SSID_size) {
+ memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
+ priv->SSID_size = priv->new_SSID_size;
+ priv->new_SSID_size = 0;
+ }
+ priv->BSS_list_entries = 0;
+
+ priv->AuthenticationRequestRetryCnt = 0;
+ priv->AssociationRequestRetryCnt = 0;
+ priv->ReAssociationRequestRetryCnt = 0;
+ priv->CurrentAuthentTransactionSeqNum = 0x0001;
+ priv->ExpectedAuthentTransactionSeqNum = 0x0002;
+
+ priv->site_survey_state = SITE_SURVEY_IDLE;
+ priv->station_is_associated = 0;
+
+ if (!reset_atmel_card(dev))
+ return -EAGAIN;
+
+ if (priv->config_reg_domain) {
+ priv->reg_domain = priv->config_reg_domain;
+ atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
+ } else {
+ priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
+ for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
+ if (priv->reg_domain == channel_table[i].reg_domain)
+ break;
+ if (i == sizeof(channel_table)/sizeof(channel_table[0])) {
+ priv->reg_domain = REG_DOMAIN_MKK1;
+ printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
+ }
+ }
+
+ if ((channel = atmel_validate_channel(priv, priv->channel)))
+ priv->channel = channel;
+
+ /* this moves station_state on.... */
+ atmel_scan(priv, 1);
+
+ atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
+ return 0;
+}
+
+static int atmel_close (struct net_device *dev)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ atmel_enter_state(priv, STATION_STATE_DOWN);
+
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(dev, GCR, 0x0060);
+ atmel_write16(dev, GCR, 0x0040);
+ return 0;
+}
+
+static int atmel_validate_channel(struct atmel_private *priv, int channel)
+{
+ /* check that channel is OK, if so return zero,
+ else return suitable default channel */
+ int i;
+
+ for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
+ if (priv->reg_domain == channel_table[i].reg_domain) {
+ if (channel >= channel_table[i].min &&
+ channel <= channel_table[i].max)
+ return 0;
+ else
+ return channel_table[i].min;
+ }
+ return 0;
+}
+
+static int atmel_proc_output (char *buf, struct atmel_private *priv)
+{
+ int i;
+ char *p = buf;
+ char *s, *r, *c;
+
+ p += sprintf(p, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR);
+
+ if (priv->station_state != STATION_STATE_DOWN) {
+ p += sprintf(p, "Firmware version:\t%d.%d build %d\nFirmware location:\t",
+ priv->host_info.major_version,
+ priv->host_info.minor_version,
+ priv->host_info.build_version);
+
+ if (priv->card_type != CARD_TYPE_EEPROM)
+ p += sprintf(p, "on card\n");
+ else if (priv->firmware)
+ p += sprintf(p, "%s loaded by host\n", priv->firmware_id);
+ else
+ p += sprintf(p, "%s loaded by hotplug\n", priv->firmware_id);
+
+ switch(priv->card_type) {
+ case CARD_TYPE_PARALLEL_FLASH: c = "Parallel flash"; break;
+ case CARD_TYPE_SPI_FLASH: c = "SPI flash\n"; break;
+ case CARD_TYPE_EEPROM: c = "EEPROM"; break;
+ default: c = "<unknown>";
+ }
+
+
+ r = "<unknown>";
+ for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++)
+ if (priv->reg_domain == channel_table[i].reg_domain)
+ r = channel_table[i].name;
+
+ p += sprintf(p, "MAC memory type:\t%s\n", c);
+ p += sprintf(p, "Regulatory domain:\t%s\n", r);
+ p += sprintf(p, "Host CRC checking:\t%s\n",
+ priv->do_rx_crc ? "On" : "Off");
+ p += sprintf(p, "WPA-capable firmware:\t%s\n",
+ priv->use_wpa ? "Yes" : "No");
+ }
+
+ switch(priv->station_state) {
+ case STATION_STATE_SCANNING: s = "Scanning"; break;
+ case STATION_STATE_JOINNING: s = "Joining"; break;
+ case STATION_STATE_AUTHENTICATING: s = "Authenticating"; break;
+ case STATION_STATE_ASSOCIATING: s = "Associating"; break;
+ case STATION_STATE_READY: s = "Ready"; break;
+ case STATION_STATE_REASSOCIATING: s = "Reassociating"; break;
+ case STATION_STATE_MGMT_ERROR: s = "Management error"; break;
+ case STATION_STATE_DOWN: s = "Down"; break;
+ default: s = "<unknown>";
+ }
+
+ p += sprintf(p, "Current state:\t\t%s\n", s);
+ return p - buf;
+}
+
+static int atmel_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct atmel_private *priv = data;
+ int len = atmel_proc_output (page, priv);
+ if (len <= off+count) *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len>count) len = count;
+ if (len<0) len = 0;
+ return len;
+}
+
+struct net_device *init_atmel_card( unsigned short irq, int port, const AtmelFWType fw_type,
+ struct device *sys_dev, int (*card_present)(void *), void *card)
+{
+ struct net_device *dev;
+ struct atmel_private *priv;
+ int rc;
+
+ /* Create the network device object. */
+ dev = alloc_etherdev(sizeof(*priv));
+ if (!dev) {
+ printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
+ return NULL;
+ }
+ if (dev_alloc_name(dev, dev->name) < 0) {
+ printk(KERN_ERR "atmel: Couldn't get name!\n");
+ goto err_out_free;
+ }
+
+ priv = netdev_priv(dev);
+ priv->dev = dev;
+ priv->sys_dev = sys_dev;
+ priv->present_callback = card_present;
+ priv->card = card;
+ priv->firmware = NULL;
+ priv->firmware_id[0] = '\0';
+ priv->firmware_type = fw_type;
+ if (firmware) /* module parameter */
+ strcpy(priv->firmware_id, firmware);
+ priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
+ priv->station_state = STATION_STATE_DOWN;
+ priv->do_rx_crc = 0;
+ /* For PCMCIA cards, some chips need CRC, some don't
+ so we have to probe. */
+ if (priv->bus_type == BUS_TYPE_PCCARD) {
+ priv->probe_crc = 1;
+ priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
+ } else
+ priv->probe_crc = 0;
+ memset(&priv->stats, 0, sizeof(priv->stats));
+ memset(&priv->wstats, 0, sizeof(priv->wstats));
+ priv->last_qual = jiffies;
+ priv->last_beacon_timestamp = 0;
+ memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
+ memset(priv->BSSID, 0, 6);
+ priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
+ priv->station_was_associated = 0;
+
+ priv->last_survey = jiffies;
+ priv->preamble = LONG_PREAMBLE;
+ priv->operating_mode = IW_MODE_INFRA;
+ priv->connect_to_any_BSS = 0;
+ priv->config_reg_domain = 0;
+ priv->reg_domain = 0;
+ priv->tx_rate = 3;
+ priv->auto_tx_rate = 1;
+ priv->channel = 4;
+ priv->power_mode = 0;
+ priv->SSID[0] = '\0';
+ priv->SSID_size = 0;
+ priv->new_SSID_size = 0;
+ priv->frag_threshold = 2346;
+ priv->rts_threshold = 2347;
+ priv->short_retry = 7;
+ priv->long_retry = 4;
+
+ priv->wep_is_on = 0;
+ priv->default_key = 0;
+ priv->encryption_level = 0;
+ priv->exclude_unencrypted = 0;
+ priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
+ priv->use_wpa = 0;
+ memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
+ memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
+
+ priv->default_beacon_period = priv->beacon_period = 100;
+ priv->listen_interval = 1;
+
+ init_timer(&priv->management_timer);
+ spin_lock_init(&priv->irqlock);
+ spin_lock_init(&priv->timerlock);
+ priv->management_timer.function = atmel_management_timer;
+ priv->management_timer.data = (unsigned long) dev;
+
+ dev->open = atmel_open;
+ dev->stop = atmel_close;
+ dev->change_mtu = atmel_change_mtu;
+ dev->set_mac_address = atmel_set_mac_address;
+ dev->hard_start_xmit = start_tx;
+ dev->get_stats = atmel_get_stats;
+ dev->get_wireless_stats = atmel_get_wireless_stats;
+ dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
+ dev->do_ioctl = atmel_ioctl;
+ dev->irq = irq;
+ dev->base_addr = port;
+
+ SET_NETDEV_DEV(dev, sys_dev);
+
+ if ((rc = request_irq(dev->irq, service_interrupt, SA_SHIRQ, dev->name, dev))) {
+ printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc );
+ goto err_out_free;
+ }
+
+ if (priv->bus_type == BUS_TYPE_PCI &&
+ !request_region( dev->base_addr, 64, dev->name )) {
+ goto err_out_irq;
+ }
+
+ if (register_netdev(dev))
+ goto err_out_res;
+
+ if (!probe_atmel_card(dev)){
+ unregister_netdev(dev);
+ goto err_out_res;
+ }
+
+ netif_carrier_off(dev);
+
+ create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
+
+ printk(KERN_INFO "%s: Atmel at76c50x wireless. Version %d.%d simon@thekelleys.org.uk\n",
+ dev->name, DRIVER_MAJOR, DRIVER_MINOR);
+
+ SET_MODULE_OWNER(dev);
+ return dev;
+
+ err_out_res:
+ if (priv->bus_type == BUS_TYPE_PCI)
+ release_region( dev->base_addr, 64 );
+ err_out_irq:
+ free_irq(dev->irq, dev);
+ err_out_free:
+ free_netdev(dev);
+ return NULL;
+}
+
+EXPORT_SYMBOL(init_atmel_card);
+
+void stop_atmel_card(struct net_device *dev, int freeres)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* put a brick on it... */
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(dev, GCR, 0x0060);
+ atmel_write16(dev, GCR, 0x0040);
+
+ del_timer_sync(&priv->management_timer);
+ unregister_netdev(dev);
+ remove_proc_entry("driver/atmel", NULL);
+ free_irq(dev->irq, dev);
+ if (priv->firmware)
+ kfree(priv->firmware);
+ if (freeres) {
+ /* PCMCIA frees this stuff, so only for PCI */
+ release_region(dev->base_addr, 64);
+ }
+ free_netdev(dev);
+}
+
+EXPORT_SYMBOL(stop_atmel_card);
+
+static int atmel_set_essid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* Check if we asked for `any' */
+ if(dwrq->flags == 0) {
+ priv->connect_to_any_BSS = 1;
+ } else {
+ int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
+
+ priv->connect_to_any_BSS = 0;
+
+ /* Check the size of the string */
+ if (dwrq->length > MAX_SSID_LENGTH + 1)
+ return -E2BIG ;
+ if (index != 0)
+ return -EINVAL;
+
+ memcpy(priv->new_SSID, extra, dwrq->length - 1);
+ priv->new_SSID_size = dwrq->length - 1;
+ }
+
+ return -EINPROGRESS;
+}
+
+static int atmel_get_essid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* Get the current SSID */
+ if (priv->new_SSID_size != 0) {
+ memcpy(extra, priv->new_SSID, priv->new_SSID_size);
+ extra[priv->new_SSID_size] = '\0';
+ dwrq->length = priv->new_SSID_size + 1;
+ } else {
+ memcpy(extra, priv->SSID, priv->SSID_size);
+ extra[priv->SSID_size] = '\0';
+ dwrq->length = priv->SSID_size + 1;
+ }
+
+ dwrq->flags = !priv->connect_to_any_BSS; /* active */
+
+ return 0;
+}
+
+static int atmel_get_wap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *awrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
+ awrq->sa_family = ARPHRD_ETHER;
+
+ return 0;
+}
+
+static int atmel_set_encode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* Basic checking: do we have a key to set ?
+ * Note : with the new API, it's impossible to get a NULL pointer.
+ * Therefore, we need to check a key size == 0 instead.
+ * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
+ * when no key is present (only change flags), but older versions
+ * don't do it. - Jean II */
+ if (dwrq->length > 0) {
+ int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
+ int current_index = priv->default_key;
+ /* Check the size of the key */
+ if (dwrq->length > 13) {
+ return -EINVAL;
+ }
+ /* Check the index (none -> use current) */
+ if (index < 0 || index >= 4)
+ index = current_index;
+ else
+ priv->default_key = index;
+ /* Set the length */
+ if (dwrq->length > 5)
+ priv->wep_key_len[index] = 13;
+ else
+ if (dwrq->length > 0)
+ priv->wep_key_len[index] = 5;
+ else
+ /* Disable the key */
+ priv->wep_key_len[index] = 0;
+ /* Check if the key is not marked as invalid */
+ if(!(dwrq->flags & IW_ENCODE_NOKEY)) {
+ /* Cleanup */
+ memset(priv->wep_keys[index], 0, 13);
+ /* Copy the key in the driver */
+ memcpy(priv->wep_keys[index], extra, dwrq->length);
+ }
+ /* WE specify that if a valid key is set, encryption
+ * should be enabled (user may turn it off later)
+ * This is also how "iwconfig ethX key on" works */
+ if (index == current_index &&
+ priv->wep_key_len[index] > 0) {
+ priv->wep_is_on = 1;
+ priv->exclude_unencrypted = 1;
+ if (priv->wep_key_len[index] > 5) {
+ priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
+ priv->encryption_level = 2;
+ } else {
+ priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
+ priv->encryption_level = 1;
+ }
+ }
+ } else {
+ /* Do we want to just set the transmit key index ? */
+ int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
+ if ( index>=0 && index < 4 ) {
+ priv->default_key = index;
+ } else
+ /* Don't complain if only change the mode */
+ if(!dwrq->flags & IW_ENCODE_MODE) {
+ return -EINVAL;
+ }
+ }
+ /* Read the flags */
+ if(dwrq->flags & IW_ENCODE_DISABLED) {
+ priv->wep_is_on = 0;
+ priv->encryption_level = 0;
+ priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
+ } else {
+ priv->wep_is_on = 1;
+ if (priv->wep_key_len[priv->default_key] > 5) {
+ priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
+ priv->encryption_level = 2;
+ } else {
+ priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
+ priv->encryption_level = 1;
+ }
+ }
+ if(dwrq->flags & IW_ENCODE_RESTRICTED)
+ priv->exclude_unencrypted = 1;
+ if(dwrq->flags & IW_ENCODE_OPEN)
+ priv->exclude_unencrypted = 0;
+
+ return -EINPROGRESS; /* Call commit handler */
+}
+
+
+static int atmel_get_encode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
+
+ if (!priv->wep_is_on)
+ dwrq->flags = IW_ENCODE_DISABLED;
+ else if (priv->exclude_unencrypted)
+ dwrq->flags = IW_ENCODE_RESTRICTED;
+ else
+ dwrq->flags = IW_ENCODE_OPEN;
+
+ /* Which key do we want ? -1 -> tx index */
+ if (index < 0 || index >= 4)
+ index = priv->default_key;
+ dwrq->flags |= index + 1;
+ /* Copy the key to the user buffer */
+ dwrq->length = priv->wep_key_len[index];
+ if (dwrq->length > 16) {
+ dwrq->length=0;
+ } else {
+ memset(extra, 0, 16);
+ memcpy(extra, priv->wep_keys[index], dwrq->length);
+ }
+
+ return 0;
+}
+
+static int atmel_get_name(struct net_device *dev,
+ struct iw_request_info *info,
+ char *cwrq,
+ char *extra)
+{
+ strcpy(cwrq, "IEEE 802.11-DS");
+ return 0;
+}
+
+static int atmel_set_rate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ if (vwrq->fixed == 0) {
+ priv->tx_rate = 3;
+ priv->auto_tx_rate = 1;
+ } else {
+ priv->auto_tx_rate = 0;
+
+ /* Which type of value ? */
+ if((vwrq->value < 4) && (vwrq->value >= 0)) {
+ /* Setting by rate index */
+ priv->tx_rate = vwrq->value;
+ } else {
+ /* Setting by frequency value */
+ switch (vwrq->value) {
+ case 1000000: priv->tx_rate = 0; break;
+ case 2000000: priv->tx_rate = 1; break;
+ case 5500000: priv->tx_rate = 2; break;
+ case 11000000: priv->tx_rate = 3; break;
+ default: return -EINVAL;
+ }
+ }
+ }
+
+ return -EINPROGRESS;
+}
+
+static int atmel_set_mode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *uwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
+ return -EINVAL;
+
+ priv->operating_mode = *uwrq;
+ return -EINPROGRESS;
+}
+
+static int atmel_get_mode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *uwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ *uwrq = priv->operating_mode;
+ return 0;
+}
+
+static int atmel_get_rate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ if (priv->auto_tx_rate) {
+ vwrq->fixed = 0;
+ vwrq->value = 11000000;
+ } else {
+ vwrq->fixed = 1;
+ switch(priv->tx_rate) {
+ case 0: vwrq->value = 1000000; break;
+ case 1: vwrq->value = 2000000; break;
+ case 2: vwrq->value = 5500000; break;
+ case 3: vwrq->value = 11000000; break;
+ }
+ }
+ return 0;
+}
+
+static int atmel_set_power(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ priv->power_mode = vwrq->disabled ? 0 : 1;
+ return -EINPROGRESS;
+}
+
+static int atmel_get_power(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ vwrq->disabled = priv->power_mode ? 0 : 1;
+ vwrq->flags = IW_POWER_ON;
+ return 0;
+}
+
+static int atmel_set_retry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
+ if(vwrq->flags & IW_RETRY_MAX)
+ priv->long_retry = vwrq->value;
+ else if (vwrq->flags & IW_RETRY_MIN)
+ priv->short_retry = vwrq->value;
+ else {
+ /* No modifier : set both */
+ priv->long_retry = vwrq->value;
+ priv->short_retry = vwrq->value;
+ }
+ return -EINPROGRESS;
+ }
+
+ return -EINVAL;
+}
+
+static int atmel_get_retry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ vwrq->disabled = 0; /* Can't be disabled */
+
+ /* Note : by default, display the min retry number */
+ if((vwrq->flags & IW_RETRY_MAX)) {
+ vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ vwrq->value = priv->long_retry;
+ } else {
+ vwrq->flags = IW_RETRY_LIMIT;
+ vwrq->value = priv->short_retry;
+ if(priv->long_retry != priv->short_retry)
+ vwrq->flags |= IW_RETRY_MIN;
+ }
+
+ return 0;
+}
+
+static int atmel_set_rts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int rthr = vwrq->value;
+
+ if(vwrq->disabled)
+ rthr = 2347;
+ if((rthr < 0) || (rthr > 2347)) {
+ return -EINVAL;
+ }
+ priv->rts_threshold = rthr;
+
+ return -EINPROGRESS; /* Call commit handler */
+}
+
+static int atmel_get_rts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ vwrq->value = priv->rts_threshold;
+ vwrq->disabled = (vwrq->value >= 2347);
+ vwrq->fixed = 1;
+
+ return 0;
+}
+
+static int atmel_set_frag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int fthr = vwrq->value;
+
+ if(vwrq->disabled)
+ fthr = 2346;
+ if((fthr < 256) || (fthr > 2346)) {
+ return -EINVAL;
+ }
+ fthr &= ~0x1; /* Get an even value - is it really needed ??? */
+ priv->frag_threshold = fthr;
+
+ return -EINPROGRESS; /* Call commit handler */
+}
+
+static int atmel_get_frag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ vwrq->value = priv->frag_threshold;
+ vwrq->disabled = (vwrq->value >= 2346);
+ vwrq->fixed = 1;
+
+ return 0;
+}
+
+static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
+ 2447, 2452, 2457, 2462, 2467, 2472, 2484 };
+
+static int atmel_set_freq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *fwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int rc = -EINPROGRESS; /* Call commit handler */
+
+ /* If setting by frequency, convert to a channel */
+ if((fwrq->e == 1) &&
+ (fwrq->m >= (int) 241200000) &&
+ (fwrq->m <= (int) 248700000)) {
+ int f = fwrq->m / 100000;
+ int c = 0;
+ while((c < 14) && (f != frequency_list[c]))
+ c++;
+ /* Hack to fall through... */
+ fwrq->e = 0;
+ fwrq->m = c + 1;
+ }
+ /* Setting by channel number */
+ if((fwrq->m > 1000) || (fwrq->e > 0))
+ rc = -EOPNOTSUPP;
+ else {
+ int channel = fwrq->m;
+ if (atmel_validate_channel(priv, channel) == 0) {
+ priv->channel = channel;
+ } else {
+ rc = -EINVAL;
+ }
+ }
+ return rc;
+}
+
+static int atmel_get_freq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *fwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+
+ fwrq->m = priv->channel;
+ fwrq->e = 0;
+ return 0;
+}
+
+static int atmel_set_scan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *vwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ /* Note : you may have realised that, as this is a SET operation,
+ * this is privileged and therefore a normal user can't
+ * perform scanning.
+ * This is not an error, while the device perform scanning,
+ * traffic doesn't flow, so it's a perfect DoS...
+ * Jean II */
+
+ if (priv->station_state == STATION_STATE_DOWN)
+ return -EAGAIN;
+
+ /* Timeout old surveys. */
+ if ((jiffies - priv->last_survey) > (20 * HZ))
+ priv->site_survey_state = SITE_SURVEY_IDLE;
+ priv->last_survey = jiffies;
+
+ /* Initiate a scan command */
+ if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
+ return -EBUSY;
+
+ del_timer_sync(&priv->management_timer);
+ spin_lock_irqsave(&priv->irqlock, flags);
+
+ priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
+ priv->fast_scan = 0;
+ atmel_scan(priv, 0);
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+
+ return 0;
+}
+
+static int atmel_get_scan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int i;
+ char *current_ev = extra;
+ struct iw_event iwe;
+
+ if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
+ return -EAGAIN;
+
+ for(i=0; i<priv->BSS_list_entries; i++) {
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
+ current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
+
+ iwe.u.data.length = priv->BSSinfo[i].SSIDsize;
+ if (iwe.u.data.length > 32)
+ iwe.u.data.length = 32;
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
+
+ iwe.cmd = SIOCGIWMODE;
+ iwe.u.mode = priv->BSSinfo[i].BSStype;
+ current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
+
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = priv->BSSinfo[i].channel;
+ iwe.u.freq.e = 0;
+ current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
+
+ iwe.cmd = SIOCGIWENCODE;
+ if (priv->BSSinfo[i].UsingWEP)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
+
+ }
+
+ /* Length of data */
+ dwrq->length = (current_ev - extra);
+ dwrq->flags = 0;
+
+ return 0;
+}
+
+static int atmel_get_range(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *dwrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ struct iw_range *range = (struct iw_range *) extra;
+ int k,i,j;
+
+ dwrq->length = sizeof(struct iw_range);
+ memset(range, 0, sizeof(range));
+ range->min_nwid = 0x0000;
+ range->max_nwid = 0x0000;
+ range->num_channels = 0;
+ for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
+ if (priv->reg_domain == channel_table[j].reg_domain) {
+ range->num_channels = channel_table[j].max - channel_table[j].min + 1;
+ break;
+ }
+ if (range->num_channels != 0) {
+ for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
+ range->freq[k].i = i; /* List index */
+ range->freq[k].m = frequency_list[i-1] * 100000;
+ range->freq[k++].e = 1; /* Values in table in MHz -> * 10^5 * 10 */
+ }
+ range->num_frequency = k;
+ }
+
+ range->max_qual.qual = 100;
+ range->max_qual.level = 100;
+ range->max_qual.noise = 0;
+ range->max_qual.updated = IW_QUAL_NOISE_INVALID;
+
+ range->avg_qual.qual = 50;
+ range->avg_qual.level = 50;
+ range->avg_qual.noise = 0;
+ range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
+
+ range->sensitivity = 0;
+
+ range->bitrate[0] = 1000000;
+ range->bitrate[1] = 2000000;
+ range->bitrate[2] = 5500000;
+ range->bitrate[3] = 11000000;
+ range->num_bitrates = 4;
+
+ range->min_rts = 0;
+ range->max_rts = 2347;
+ range->min_frag = 256;
+ range->max_frag = 2346;
+
+ range->encoding_size[0] = 5;
+ range->encoding_size[1] = 13;
+ range->num_encoding_sizes = 2;
+ range->max_encoding_tokens = 4;
+
+ range->pmp_flags = IW_POWER_ON;
+ range->pmt_flags = IW_POWER_ON;
+ range->pm_capa = 0;
+
+ range->we_version_source = WIRELESS_EXT;
+ range->we_version_compiled = WIRELESS_EXT;
+ range->retry_capa = IW_RETRY_LIMIT ;
+ range->retry_flags = IW_RETRY_LIMIT;
+ range->r_time_flags = 0;
+ range->min_retry = 1;
+ range->max_retry = 65535;
+
+ return 0;
+}
+
+static int atmel_set_wap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *awrq,
+ char *extra)
+{
+ struct atmel_private *priv = netdev_priv(dev);
+ int i;
+ static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
+ unsigned long flags;
+
+ if (awrq->sa_family != ARPHRD_ETHER)
+ return -EINVAL;
+
+ if (memcmp(bcast, awrq->sa_data, 6) == 0) {
+ del_timer_sync(&priv->management_timer);
+ spin_lock_irqsave(&priv->irqlock, flags);
+ atmel_scan(priv, 1);
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+ return 0;
+ }
+
+ for(i=0; i<priv->BSS_list_entries; i++) {
+ if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
+ if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
+ return -EINVAL;
+ } else if (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
+ return -EINVAL;
+ } else {
+ del_timer_sync(&priv->management_timer);
+ spin_lock_irqsave(&priv->irqlock, flags);
+ atmel_join_bss(priv, i);
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+ return 0;
+ }
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int atmel_config_commit(struct net_device *dev,
+ struct iw_request_info *info, /* NULL */
+ void *zwrq, /* NULL */
+ char *extra) /* NULL */
+{
+ return atmel_open(dev);
+}
+
+static const iw_handler atmel_handler[] =
+{
+ (iw_handler) atmel_config_commit, /* SIOCSIWCOMMIT */
+ (iw_handler) atmel_get_name, /* SIOCGIWNAME */
+ (iw_handler) NULL, /* SIOCSIWNWID */
+ (iw_handler) NULL, /* SIOCGIWNWID */
+ (iw_handler) atmel_set_freq, /* SIOCSIWFREQ */
+ (iw_handler) atmel_get_freq, /* SIOCGIWFREQ */
+ (iw_handler) atmel_set_mode, /* SIOCSIWMODE */
+ (iw_handler) atmel_get_mode, /* SIOCGIWMODE */
+ (iw_handler) NULL, /* SIOCSIWSENS */
+ (iw_handler) NULL, /* SIOCGIWSENS */
+ (iw_handler) NULL, /* SIOCSIWRANGE */
+ (iw_handler) atmel_get_range, /* SIOCGIWRANGE */
+ (iw_handler) NULL, /* SIOCSIWPRIV */
+ (iw_handler) NULL, /* SIOCGIWPRIV */
+ (iw_handler) NULL, /* SIOCSIWSTATS */
+ (iw_handler) NULL, /* SIOCGIWSTATS */
+ (iw_handler) NULL, /* SIOCSIWSPY */
+ (iw_handler) NULL, /* SIOCGIWSPY */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) atmel_set_wap, /* SIOCSIWAP */
+ (iw_handler) atmel_get_wap, /* SIOCGIWAP */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* SIOCGIWAPLIST */
+ (iw_handler) atmel_set_scan, /* SIOCSIWSCAN */
+ (iw_handler) atmel_get_scan, /* SIOCGIWSCAN */
+ (iw_handler) atmel_set_essid, /* SIOCSIWESSID */
+ (iw_handler) atmel_get_essid, /* SIOCGIWESSID */
+ (iw_handler) NULL, /* SIOCSIWNICKN */
+ (iw_handler) NULL, /* SIOCGIWNICKN */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) atmel_set_rate, /* SIOCSIWRATE */
+ (iw_handler) atmel_get_rate, /* SIOCGIWRATE */
+ (iw_handler) atmel_set_rts, /* SIOCSIWRTS */
+ (iw_handler) atmel_get_rts, /* SIOCGIWRTS */
+ (iw_handler) atmel_set_frag, /* SIOCSIWFRAG */
+ (iw_handler) atmel_get_frag, /* SIOCGIWFRAG */
+ (iw_handler) NULL, /* SIOCSIWTXPOW */
+ (iw_handler) NULL, /* SIOCGIWTXPOW */
+ (iw_handler) atmel_set_retry, /* SIOCSIWRETRY */
+ (iw_handler) atmel_get_retry, /* SIOCGIWRETRY */
+ (iw_handler) atmel_set_encode, /* SIOCSIWENCODE */
+ (iw_handler) atmel_get_encode, /* SIOCGIWENCODE */
+ (iw_handler) atmel_set_power, /* SIOCSIWPOWER */
+ (iw_handler) atmel_get_power, /* SIOCGIWPOWER */
+};
+
+
+static const iw_handler atmel_private_handler[] =
+{
+ NULL, /* SIOCIWFIRSTPRIV */
+};
+
+typedef struct atmel_priv_ioctl {
+ char id[32];
+ unsigned char __user *data;
+ unsigned short len;
+} atmel_priv_ioctl;
+
+
+#define ATMELFWL SIOCIWFIRSTPRIV
+#define ATMELIDIFC ATMELFWL + 1
+#define ATMELRD ATMELFWL + 2
+#define ATMELMAGIC 0x51807
+#define REGDOMAINSZ 20
+
+static const struct iw_priv_args atmel_private_args[] = {
+/*{ cmd, set_args, get_args, name } */
+ { ATMELFWL, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof (atmel_priv_ioctl), IW_PRIV_TYPE_NONE, "atmelfwl" },
+ { ATMELIDIFC, IW_PRIV_TYPE_NONE, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "atmelidifc" },
+ { ATMELRD, IW_PRIV_TYPE_CHAR | REGDOMAINSZ, IW_PRIV_TYPE_NONE, "regdomain" },
+};
+
+static const struct iw_handler_def atmel_handler_def =
+{
+ .num_standard = sizeof(atmel_handler)/sizeof(iw_handler),
+ .num_private = sizeof(atmel_private_handler)/sizeof(iw_handler),
+ .num_private_args = sizeof(atmel_private_args)/sizeof(struct iw_priv_args),
+ .standard = (iw_handler *) atmel_handler,
+ .private = (iw_handler *) atmel_private_handler,
+ .private_args = (struct iw_priv_args *) atmel_private_args
+};
+
+static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ int i, rc = 0;
+ struct atmel_private *priv = netdev_priv(dev);
+ atmel_priv_ioctl com;
+ struct iwreq *wrq = (struct iwreq *) rq;
+ unsigned char *new_firmware;
+ char domain[REGDOMAINSZ+1];
+
+ switch (cmd) {
+ case SIOCGIWPRIV:
+ if(wrq->u.data.pointer) {
+ /* Set the number of ioctl available */
+ wrq->u.data.length = sizeof(atmel_private_args) / sizeof(atmel_private_args[0]);
+
+ /* Copy structure to the user buffer */
+ if (copy_to_user(wrq->u.data.pointer,
+ (u_char *) atmel_private_args,
+ sizeof(atmel_private_args)))
+ rc = -EFAULT;
+ }
+ break;
+
+ case ATMELIDIFC:
+ wrq->u.param.value = ATMELMAGIC;
+ break;
+
+ case ATMELFWL:
+ if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
+ rc = -EFAULT;
+ break;
+ }
+
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+
+ if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
+ rc = -ENOMEM;
+ break;
+ }
+
+ if (copy_from_user(new_firmware, com.data, com.len)) {
+ kfree(new_firmware);
+ rc = -EFAULT;
+ break;
+ }
+
+ if (priv->firmware)
+ kfree(priv->firmware);
+
+ priv->firmware = new_firmware;
+ priv->firmware_length = com.len;
+ strncpy(priv->firmware_id, com.id, 31);
+ priv->firmware_id[31] = '\0';
+ break;
+
+ case ATMELRD:
+ if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
+ rc = -EFAULT;
+ break;
+ }
+
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+
+ domain[REGDOMAINSZ] = 0;
+ rc = -EINVAL;
+ for (i = 0; i < sizeof(channel_table)/sizeof(channel_table[0]); i++) {
+ /* strcasecmp doesn't exist in the library */
+ char *a = channel_table[i].name;
+ char *b = domain;
+ while (*a) {
+ char c1 = *a++;
+ char c2 = *b++;
+ if (tolower(c1) != tolower(c2))
+ break;
+ }
+ if (!*a && !*b) {
+ priv->config_reg_domain = channel_table[i].reg_domain;
+ rc = 0;
+ }
+ }
+
+ if (rc == 0 && priv->station_state != STATION_STATE_DOWN)
+ rc = atmel_open(dev);
+ break;
+
+ default:
+ rc = -EOPNOTSUPP;
+ }
+
+ return rc;
+}
+
+struct auth_body {
+ u16 alg;
+ u16 trans_seq;
+ u16 status;
+ u8 el_id;
+ u8 chall_text_len;
+ u8 chall_text[253];
+};
+
+static void atmel_enter_state(struct atmel_private *priv, int new_state)
+{
+ int old_state = priv->station_state;
+
+ if (new_state == old_state)
+ return;
+
+ priv->station_state = new_state;
+
+ if (new_state == STATION_STATE_READY) {
+ netif_start_queue(priv->dev);
+ netif_carrier_on(priv->dev);
+ }
+
+ if (old_state == STATION_STATE_READY) {
+ netif_carrier_off(priv->dev);
+ if (netif_running(priv->dev))
+ netif_stop_queue(priv->dev);
+ priv->last_beacon_timestamp = 0;
+ }
+}
+
+static void atmel_scan(struct atmel_private *priv, int specific_ssid)
+{
+ struct {
+ u8 BSSID[6];
+ u8 SSID[MAX_SSID_LENGTH];
+ u8 scan_type;
+ u8 channel;
+ u16 BSS_type;
+ u16 min_channel_time;
+ u16 max_channel_time;
+ u8 options;
+ u8 SSID_size;
+ } cmd;
+
+ memset(cmd.BSSID, 0xff, 6);
+
+ if (priv->fast_scan) {
+ cmd.SSID_size = priv->SSID_size;
+ memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
+ cmd.min_channel_time = cpu_to_le16(10);
+ cmd.max_channel_time = cpu_to_le16(50);
+ } else {
+ priv->BSS_list_entries = 0;
+ cmd.SSID_size = 0;
+ cmd.min_channel_time = cpu_to_le16(10);
+ cmd.max_channel_time = cpu_to_le16(120);
+ }
+
+ cmd.options = 0;
+
+ if (!specific_ssid)
+ cmd.options |= SCAN_OPTIONS_SITE_SURVEY;
+
+ cmd.channel = (priv->channel & 0x7f);
+ cmd.scan_type = SCAN_TYPE_ACTIVE;
+ cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
+ BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);
+
+ atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));
+
+ /* This must come after all hardware access to avoid being messed up
+ by stuff happening in interrupt context after we leave STATE_DOWN */
+ atmel_enter_state(priv, STATION_STATE_SCANNING);
+}
+
+static void join(struct atmel_private *priv, int type)
+{
+ struct {
+ u8 BSSID[6];
+ u8 SSID[MAX_SSID_LENGTH];
+ u8 BSS_type; /* this is a short in a scan command - weird */
+ u8 channel;
+ u16 timeout;
+ u8 SSID_size;
+ u8 reserved;
+ } cmd;
+
+ cmd.SSID_size = priv->SSID_size;
+ memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
+ memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
+ cmd.channel = (priv->channel & 0x7f);
+ cmd.BSS_type = type;
+ cmd.timeout = cpu_to_le16(2000);
+
+ atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
+}
+
+
+static void start(struct atmel_private *priv, int type)
+{
+ struct {
+ u8 BSSID[6];
+ u8 SSID[MAX_SSID_LENGTH];
+ u8 BSS_type;
+ u8 channel;
+ u8 SSID_size;
+ u8 reserved[3];
+ } cmd;
+
+ cmd.SSID_size = priv->SSID_size;
+ memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
+ memcpy(cmd.BSSID, priv->BSSID, 6);
+ cmd.BSS_type = type;
+ cmd.channel = (priv->channel & 0x7f);
+
+ atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
+}
+
+static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 channel)
+{
+ int rejoin = 0;
+ int new = capability & C80211_MGMT_CAPABILITY_ShortPreamble ?
+ SHORT_PREAMBLE : LONG_PREAMBLE;
+
+ if (priv->preamble != new) {
+ priv->preamble = new;
+ rejoin = 1;
+ atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
+ }
+
+ if (priv->channel != channel) {
+ priv->channel = channel;
+ rejoin = 1;
+ atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
+ }
+
+ if (rejoin) {
+ priv->station_is_associated = 0;
+ atmel_enter_state(priv, STATION_STATE_JOINNING);
+
+ if (priv->operating_mode == IW_MODE_INFRA)
+ join(priv, BSS_TYPE_INFRASTRUCTURE);
+ else
+ join(priv, BSS_TYPE_AD_HOC);
+ }
+}
+
+
+static void send_authentication_request(struct atmel_private *priv, u8 *challenge, int challenge_len)
+{
+ struct ieee802_11_hdr header;
+ struct auth_body auth;
+
+ header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT | IEEE802_11_STYPE_AUTH);
+ header.duration_id = cpu_to_le16(0x8000);
+ header.seq_ctl = 0;
+ memcpy(header.addr1, priv->CurrentBSSID, 6);
+ memcpy(header.addr2, priv->dev->dev_addr, 6);
+ memcpy(header.addr3, priv->CurrentBSSID, 6);
+
+ if (priv->wep_is_on) {
+ auth.alg = cpu_to_le16(C80211_MGMT_AAN_SHAREDKEY);
+ /* no WEP for authentication frames with TrSeqNo 1 */
+ if (priv->CurrentAuthentTransactionSeqNum != 1)
+ header.frame_ctl |= cpu_to_le16(IEEE802_11_FCTL_WEP);
+ } else {
+ auth.alg = cpu_to_le16(C80211_MGMT_AAN_OPENSYSTEM);
+ }
+
+ auth.status = 0;
+ auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
+ priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
+ priv->CurrentAuthentTransactionSeqNum += 2;
+
+ if (challenge_len != 0) {
+ auth.el_id = 16; /* challenge_text */
+ auth.chall_text_len = challenge_len;
+ memcpy(auth.chall_text, challenge, challenge_len);
+ atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
+ } else {
+ atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
+ }
+}
+
+static void send_association_request(struct atmel_private *priv, int is_reassoc)
+{
+ u8 *ssid_el_p;
+ int bodysize;
+ struct ieee802_11_hdr header;
+ struct ass_req_format {
+ u16 capability;
+ u16 listen_interval;
+ u8 ap[6]; /* nothing after here directly accessible */
+ u8 ssid_el_id;
+ u8 ssid_len;
+ u8 ssid[MAX_SSID_LENGTH];
+ u8 sup_rates_el_id;
+ u8 sup_rates_len;
+ u8 rates[4];
+ } body;
+
+ header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT |
+ (is_reassoc ? IEEE802_11_STYPE_REASSOC_REQ : IEEE802_11_STYPE_ASSOC_REQ));
+ header.duration_id = cpu_to_le16(0x8000);
+ header.seq_ctl = 0;
+
+ memcpy(header.addr1, priv->CurrentBSSID, 6);
+ memcpy(header.addr2, priv->dev->dev_addr, 6);
+ memcpy(header.addr3, priv->CurrentBSSID, 6);
+
+ body.capability = cpu_to_le16(C80211_MGMT_CAPABILITY_ESS);
+ if (priv->wep_is_on)
+ body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_Privacy);
+ if (priv->preamble == SHORT_PREAMBLE)
+ body.capability |= cpu_to_le16(C80211_MGMT_CAPABILITY_ShortPreamble);
+
+ body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);
+
+ /* current AP address - only in reassoc frame */
+ if (is_reassoc) {
+ memcpy(body.ap, priv->CurrentBSSID, 6);
+ ssid_el_p = (u8 *)&body.ssid_el_id;
+ bodysize = 18 + priv->SSID_size;
+ } else {
+ ssid_el_p = (u8 *)&body.ap[0];
+ bodysize = 12 + priv->SSID_size;
+ }
+
+ ssid_el_p[0]= C80211_MGMT_ElementID_SSID;
+ ssid_el_p[1] = priv->SSID_size;
+ memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
+ ssid_el_p[2 + priv->SSID_size] = C80211_MGMT_ElementID_SupportedRates;
+ ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
+ memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);
+
+ atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
+}
+
+static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee802_11_hdr *header)
+{
+ if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
+ else
+ return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
+}
+
+static int retrieve_bss(struct atmel_private *priv)
+{
+ int i;
+ int max_rssi = -128;
+ int max_index = -1;
+
+ if (priv->BSS_list_entries == 0)
+ return -1;
+
+ if (priv->connect_to_any_BSS) {
+ /* Select a BSS with the max-RSSI but of the same type and of the same WEP mode
+ and that it is not marked as 'bad' (i.e. we had previously failed to connect to
+ this BSS with the settings that we currently use) */
+ priv->current_BSS = 0;
+ for(i=0; i<priv->BSS_list_entries; i++) {
+ if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
+ ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
+ (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
+ !(priv->BSSinfo[i].channel & 0x80)) {
+ max_rssi = priv->BSSinfo[i].RSSI;
+ priv->current_BSS = max_index = i;
+ }
+
+ }
+ return max_index;
+ }
+
+ for(i=0; i<priv->BSS_list_entries; i++) {
+ if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
+ memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
+ priv->operating_mode == priv->BSSinfo[i].BSStype &&
+ atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
+ if (priv->BSSinfo[i].RSSI >= max_rssi) {
+ max_rssi = priv->BSSinfo[i].RSSI;
+ max_index = i;
+ }
+ }
+ }
+ return max_index;
+}
+
+
+static void store_bss_info(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u16 capability, u16 beacon_period, u8 channel, u8 rssi,
+ u8 ssid_len, u8 *ssid, int is_beacon)
+{
+ u8 *bss = capability & C80211_MGMT_CAPABILITY_ESS ? header->addr2 : header->addr3;
+ int i, index;
+
+ for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
+ if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
+ index = i;
+
+ /* If we process a probe and an entry from this BSS exists
+ we will update the BSS entry with the info from this BSS.
+ If we process a beacon we will only update RSSI */
+
+ if (index == -1) {
+ if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
+ return;
+ index = priv->BSS_list_entries++;
+ memcpy(priv->BSSinfo[index].BSSID, bss, 6);
+ priv->BSSinfo[index].RSSI = rssi;
+ } else {
+ if (rssi > priv->BSSinfo[index].RSSI)
+ priv->BSSinfo[index].RSSI = rssi;
+ if (is_beacon)
+ return;
+ }
+
+ priv->BSSinfo[index].channel = channel;
+ priv->BSSinfo[index].beacon_period = beacon_period;
+ priv->BSSinfo[index].UsingWEP = capability & C80211_MGMT_CAPABILITY_Privacy;
+ memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
+ priv->BSSinfo[index].SSIDsize = ssid_len;
+
+ if (capability & C80211_MGMT_CAPABILITY_IBSS)
+ priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
+ else if (capability & C80211_MGMT_CAPABILITY_ESS)
+ priv->BSSinfo[index].BSStype =IW_MODE_INFRA;
+
+ priv->BSSinfo[index].preamble = capability & C80211_MGMT_CAPABILITY_ShortPreamble ?
+ SHORT_PREAMBLE : LONG_PREAMBLE;
+}
+
+static void authenticate(struct atmel_private *priv, u16 frame_len)
+{
+ struct auth_body *auth = (struct auth_body *)priv->rx_buf;
+ u16 status = le16_to_cpu(auth->status);
+ u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
+
+ if (status == C80211_MGMT_SC_Success && !priv->wep_is_on) {
+ /* no WEP */
+ if (priv->station_was_associated) {
+ atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
+ send_association_request(priv, 1);
+ return;
+ } else {
+ atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
+ send_association_request(priv, 0);
+ return;
+ }
+ }
+
+ if (status == C80211_MGMT_SC_Success && priv->wep_is_on) {
+ /* WEP */
+ if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
+ return;
+
+ if (trans_seq_no == 0x0002 &&
+ auth->el_id == C80211_MGMT_ElementID_ChallengeText) {
+ send_authentication_request(priv, auth->chall_text, auth->chall_text_len);
+ return;
+ }
+
+ if (trans_seq_no == 0x0004) {
+ if(priv->station_was_associated) {
+ atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
+ send_association_request(priv, 1);
+ return;
+ } else {
+ atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
+ send_association_request(priv, 0);
+ return;
+ }
+ }
+ }
+
+ if (status == C80211_MGMT_SC_AuthAlgNotSupported && priv->connect_to_any_BSS) {
+ int bss_index;
+
+ priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
+
+ if ((bss_index = retrieve_bss(priv)) != -1) {
+ atmel_join_bss(priv, bss_index);
+ return;
+ }
+ }
+
+
+ priv->AuthenticationRequestRetryCnt = 0;
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+}
+
+static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
+{
+ struct ass_resp_format {
+ u16 capability;
+ u16 status;
+ u16 ass_id;
+ u8 el_id;
+ u8 length;
+ u8 rates[4];
+ } *ass_resp = (struct ass_resp_format *)priv->rx_buf;
+
+ u16 status = le16_to_cpu(ass_resp->status);
+ u16 ass_id = le16_to_cpu(ass_resp->ass_id);
+ u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;
+
+ if (frame_len < 8 + rates_len)
+ return;
+
+ if (status == C80211_MGMT_SC_Success) {
+ if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE)
+ priv->AssociationRequestRetryCnt = 0;
+ else
+ priv->ReAssociationRequestRetryCnt = 0;
+
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
+ atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
+ if (priv->power_mode == 0) {
+ priv->listen_interval = 1;
+ atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
+ } else {
+ priv->listen_interval = 2;
+ atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, PS_MODE);
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
+ }
+
+ priv->station_is_associated = 1;
+ priv->station_was_associated = 1;
+ atmel_enter_state(priv, STATION_STATE_READY);
+ return;
+ }
+
+ if (subtype == C80211_SUBTYPE_MGMT_ASS_RESPONSE &&
+ status != C80211_MGMT_SC_AssDeniedBSSRate &&
+ status != C80211_MGMT_SC_SupportCapabilities &&
+ priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ priv->AssociationRequestRetryCnt++;
+ send_association_request(priv, 0);
+ return;
+ }
+
+ if (subtype == C80211_SUBTYPE_MGMT_REASS_RESPONSE &&
+ status != C80211_MGMT_SC_AssDeniedBSSRate &&
+ status != C80211_MGMT_SC_SupportCapabilities &&
+ priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ priv->ReAssociationRequestRetryCnt++;
+ send_association_request(priv, 1);
+ return;
+ }
+
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+
+ if(priv->connect_to_any_BSS) {
+ int bss_index;
+ priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
+
+ if ((bss_index = retrieve_bss(priv)) != -1)
+ atmel_join_bss(priv, bss_index);
+
+ }
+}
+
+void atmel_join_bss(struct atmel_private *priv, int bss_index)
+{
+ struct bss_info *bss = &priv->BSSinfo[bss_index];
+
+ memcpy(priv->CurrentBSSID, bss->BSSID, 6);
+ memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);
+
+ /* The WPA stuff cares about the current AP address */
+ if (priv->use_wpa)
+ build_wpa_mib(priv);
+
+ /* When switching to AdHoc turn OFF Power Save if needed */
+
+ if (bss->BSStype == IW_MODE_ADHOC &&
+ priv->operating_mode != IW_MODE_ADHOC &&
+ priv->power_mode) {
+ priv->power_mode = 0;
+ priv->listen_interval = 1;
+ atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
+ }
+
+ priv->operating_mode = bss->BSStype;
+ priv->channel = bss->channel & 0x7f;
+ priv->beacon_period = bss->beacon_period;
+
+ if (priv->preamble != bss->preamble) {
+ priv->preamble = bss->preamble;
+ atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
+ }
+
+ if (!priv->wep_is_on && bss->UsingWEP) {
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+ return;
+ }
+
+ if (priv->wep_is_on && !bss->UsingWEP) {
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+ return;
+ }
+
+ atmel_enter_state(priv, STATION_STATE_JOINNING);
+
+ if (priv->operating_mode == IW_MODE_INFRA)
+ join(priv, BSS_TYPE_INFRASTRUCTURE);
+ else
+ join(priv, BSS_TYPE_AD_HOC);
+}
+
+
+static void restart_search(struct atmel_private *priv)
+{
+ int bss_index;
+
+ if (!priv->connect_to_any_BSS) {
+ atmel_scan(priv, 1);
+ } else {
+ priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;
+
+ if ((bss_index = retrieve_bss(priv)) != -1)
+ atmel_join_bss(priv, bss_index);
+ else
+ atmel_scan(priv, 0);
+
+ }
+}
+
+static void smooth_rssi(struct atmel_private *priv, u8 rssi)
+{
+ u8 old = priv->wstats.qual.level;
+ u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */
+
+ switch (priv->firmware_type) {
+ case ATMEL_FW_TYPE_502E:
+ max_rssi = 63; /* 502-rmfd-reve max by experiment */
+ break;
+ default:
+ break;
+ }
+
+ rssi = rssi * 100 / max_rssi;
+ if((rssi + old) % 2)
+ priv->wstats.qual.level = ((rssi + old)/2) + 1;
+ else
+ priv->wstats.qual.level = ((rssi + old)/2);
+ priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
+ priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
+}
+
+static void atmel_smooth_qual(struct atmel_private *priv)
+{
+ unsigned long time_diff = (jiffies - priv->last_qual)/HZ;
+ while (time_diff--) {
+ priv->last_qual += HZ;
+ priv->wstats.qual.qual = priv->wstats.qual.qual/2;
+ priv->wstats.qual.qual +=
+ priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
+ priv->beacons_this_sec = 0;
+ }
+ priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
+ priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
+}
+
+/* deals with incoming managment frames. */
+static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+ u16 frame_len, u8 rssi)
+{
+ u16 subtype;
+
+ switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_STYPE) {
+ case C80211_SUBTYPE_MGMT_BEACON :
+ case C80211_SUBTYPE_MGMT_ProbeResponse:
+
+ /* beacon frame has multiple variable-length fields -
+ never let an engineer loose with a data structure design. */
+ {
+ struct beacon_format {
+ u64 timestamp;
+ u16 interval;
+ u16 capability;
+ u8 ssid_el_id;
+ u8 ssid_length;
+ /* ssid here */
+ u8 rates_el_id;
+ u8 rates_length;
+ /* rates here */
+ u8 ds_el_id;
+ u8 ds_length;
+ /* ds here */
+ } *beacon = (struct beacon_format *)priv->rx_buf;
+
+ u8 channel, rates_length, ssid_length;
+ u64 timestamp = le64_to_cpu(beacon->timestamp);
+ u16 beacon_interval = le16_to_cpu(beacon->interval);
+ u16 capability = le16_to_cpu(beacon->capability);
+ u8 *beaconp = priv->rx_buf;
+ ssid_length = beacon->ssid_length;
+ /* this blows chunks. */
+ if (frame_len < 14 || frame_len < ssid_length + 15)
+ return;
+ rates_length = beaconp[beacon->ssid_length + 15];
+ if (frame_len < ssid_length + rates_length + 18)
+ return;
+ if (ssid_length > MAX_SSID_LENGTH)
+ return;
+ channel = beaconp[ssid_length + rates_length + 18];
+
+ if (priv->station_state == STATION_STATE_READY) {
+ smooth_rssi(priv, rssi);
+ if (is_frame_from_current_bss(priv, header)) {
+ priv->beacons_this_sec++;
+ atmel_smooth_qual(priv);
+ if (priv->last_beacon_timestamp) {
+ /* Note truncate this to 32 bits - kernel can't divide a long long */
+ u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
+ int beacons = beacon_delay / (beacon_interval * 1000);
+ if (beacons > 1)
+ priv->wstats.miss.beacon += beacons - 1;
+ }
+ priv->last_beacon_timestamp = timestamp;
+ handle_beacon_probe(priv, capability, channel);
+ }
+ }
+
+ if (priv->station_state == STATION_STATE_SCANNING )
+ store_bss_info(priv, header, capability, beacon_interval, channel,
+ rssi, ssid_length, &beacon->rates_el_id,
+ subtype == C80211_SUBTYPE_MGMT_BEACON) ;
+ }
+ break;
+
+ case C80211_SUBTYPE_MGMT_Authentication:
+
+ if (priv->station_state == STATION_STATE_AUTHENTICATING)
+ authenticate(priv, frame_len);
+
+ break;
+
+ case C80211_SUBTYPE_MGMT_ASS_RESPONSE:
+ case C80211_SUBTYPE_MGMT_REASS_RESPONSE:
+
+ if (priv->station_state == STATION_STATE_ASSOCIATING ||
+ priv->station_state == STATION_STATE_REASSOCIATING)
+ associate(priv, frame_len, subtype);
+
+ break;
+
+ case C80211_SUBTYPE_MGMT_DISASSOSIATION:
+ if (priv->station_is_associated &&
+ priv->operating_mode == IW_MODE_INFRA &&
+ is_frame_from_current_bss(priv, header)) {
+ priv->station_was_associated = 0;
+ priv->station_is_associated = 0;
+
+ atmel_enter_state(priv, STATION_STATE_JOINNING);
+ join(priv, BSS_TYPE_INFRASTRUCTURE);
+ }
+
+ break;
+
+ case C80211_SUBTYPE_MGMT_Deauthentication:
+ if (priv->operating_mode == IW_MODE_INFRA &&
+ is_frame_from_current_bss(priv, header)) {
+ priv->station_was_associated = 0;
+
+ atmel_enter_state(priv, STATION_STATE_JOINNING);
+ join(priv, BSS_TYPE_INFRASTRUCTURE);
+ }
+
+ break;
+ }
+}
+
+/* run when timer expires */
+static void atmel_management_timer(u_long a)
+{
+ struct net_device *dev = (struct net_device *) a;
+ struct atmel_private *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ /* Check if the card has been yanked. */
+ if (priv->card && priv->present_callback &&
+ !(*priv->present_callback)(priv->card))
+ return;
+
+ spin_lock_irqsave(&priv->irqlock, flags);
+
+ switch (priv->station_state) {
+
+ case STATION_STATE_AUTHENTICATING:
+ if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+ priv->AuthenticationRequestRetryCnt = 0;
+ restart_search(priv);
+ } else {
+ priv->AuthenticationRequestRetryCnt++;
+ priv->CurrentAuthentTransactionSeqNum = 0x0001;
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ send_authentication_request(priv, NULL, 0);
+ }
+
+ break;
+
+ case STATION_STATE_ASSOCIATING:
+ if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+ priv->AssociationRequestRetryCnt = 0;
+ restart_search(priv);
+ } else {
+ priv->AssociationRequestRetryCnt++;
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ send_association_request(priv, 0);
+ }
+
+ break;
+
+ case STATION_STATE_REASSOCIATING:
+ if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
+ atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
+ priv->station_is_associated = 0;
+ priv->ReAssociationRequestRetryCnt = 0;
+ restart_search(priv);
+ } else {
+ priv->ReAssociationRequestRetryCnt++;
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ send_association_request(priv, 1);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ spin_unlock_irqrestore(&priv->irqlock, flags);
+}
+
+static void atmel_command_irq(struct atmel_private *priv)
+{
+ u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
+ u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
+ int fast_scan;
+
+ if (status == CMD_STATUS_IDLE ||
+ status == CMD_STATUS_IN_PROGRESS)
+ return;
+
+ switch (command){
+
+ case CMD_Start:
+ if (status == CMD_STATUS_COMPLETE) {
+ priv->station_was_associated = priv->station_is_associated;
+ atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
+ (u8 *)priv->CurrentBSSID, 6);
+ atmel_enter_state(priv, STATION_STATE_READY);
+ }
+ break;
+
+ case CMD_Scan:
+ fast_scan = priv->fast_scan;
+ priv->fast_scan = 0;
+
+ if (status != CMD_STATUS_COMPLETE) {
+ atmel_scan(priv, 1);
+ } else {
+ int bss_index = retrieve_bss(priv);
+ if (bss_index != -1) {
+ atmel_join_bss(priv, bss_index);
+ } else if (priv->operating_mode == IW_MODE_ADHOC &&
+ priv->SSID_size != 0) {
+ start(priv, BSS_TYPE_AD_HOC);
+ } else {
+ priv->fast_scan = !fast_scan;
+ atmel_scan(priv, 1);
+ }
+ priv->site_survey_state = SITE_SURVEY_COMPLETED;
+ }
+ break;
+
+ case CMD_SiteSurvey:
+ priv->fast_scan = 0;
+
+ if (status != CMD_STATUS_COMPLETE)
+ return;
+
+ priv->site_survey_state = SITE_SURVEY_COMPLETED;
+ if (priv->station_is_associated) {
+ atmel_enter_state(priv, STATION_STATE_READY);
+ } else {
+ atmel_scan(priv, 1);
+ }
+ break;
+
+ case CMD_Join:
+ if (status == CMD_STATUS_COMPLETE) {
+ if (priv->operating_mode == IW_MODE_ADHOC) {
+ priv->station_was_associated = priv->station_is_associated;
+ atmel_enter_state(priv, STATION_STATE_READY);
+ } else {
+ priv->AuthenticationRequestRetryCnt = 0;
+ atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);
+
+ mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
+ priv->CurrentAuthentTransactionSeqNum = 0x0001;
+ send_authentication_request(priv, NULL, 0);
+ }
+ return;
+ }
+
+ atmel_scan(priv, 1);
+
+ }
+}
+
+static int atmel_wakeup_firmware(struct atmel_private *priv)
+{
+ struct host_info_struct *iface = &priv->host_info;
+ u16 mr1, mr3;
+ int i;
+
+ if (priv->card_type == CARD_TYPE_SPI_FLASH)
+ atmel_set_gcr(priv->dev, GCR_REMAP);
+
+ /* wake up on-board processor */
+ atmel_clear_gcr(priv->dev, 0x0040);
+ atmel_write16(priv->dev, BSR, BSS_SRAM);
+
+ if (priv->card_type == CARD_TYPE_SPI_FLASH)
+ mdelay(100);
+
+ /* and wait for it */
+ for (i = LOOP_RETRY_LIMIT; i; i--) {
+ mr1 = atmel_read16(priv->dev, MR1);
+ mr3 = atmel_read16(priv->dev, MR3);
+
+ if (mr3 & MAC_BOOT_COMPLETE)
+ break;
+ if (mr1 & MAC_BOOT_COMPLETE &&
+ priv->bus_type == BUS_TYPE_PCCARD)
+ break;
+ }
+
+ if (i == 0) {
+ printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
+ return 0;
+ }
+
+ if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
+ printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
+ return 0;
+ }
+
+ /* now check for completion of MAC initialization through
+ the FunCtrl field of the IFACE, poll MR1 to detect completion of
+ MAC initialization, check completion status, set interrupt mask,
+ enables interrupts and calls Tx and Rx initialization functions */
+
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);
+
+ for (i = LOOP_RETRY_LIMIT; i; i--) {
+ mr1 = atmel_read16(priv->dev, MR1);
+ mr3 = atmel_read16(priv->dev, MR3);
+
+ if (mr3 & MAC_INIT_COMPLETE)
+ break;
+ if (mr1 & MAC_INIT_COMPLETE &&
+ priv->bus_type == BUS_TYPE_PCCARD)
+ break;
+ }
+
+ if (i == 0) {
+ printk(KERN_ALERT "%s: MAC failed to initialise.\n", priv->dev->name);
+ return 0;
+ }
+
+ /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
+ if ((mr3 & MAC_INIT_COMPLETE) &&
+ !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
+ printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
+ return 0;
+ }
+ if ((mr1 & MAC_INIT_COMPLETE) &&
+ !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
+ printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
+ return 0;
+ }
+
+ atmel_copy_to_host(priv->dev, (unsigned char *)iface,
+ priv->host_info_base, sizeof(*iface));
+
+ iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
+ iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
+ iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
+ iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
+ iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
+ iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
+ iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
+ iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
+ iface->build_version = le16_to_cpu(iface->build_version);
+ iface->command_pos = le16_to_cpu(iface->command_pos);
+ iface->major_version = le16_to_cpu(iface->major_version);
+ iface->minor_version = le16_to_cpu(iface->minor_version);
+ iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
+ iface->mac_status = le16_to_cpu(iface->mac_status);
+
+ return 1;
+}
+
+/* determine type of memory and MAC address */
+static int probe_atmel_card(struct net_device *dev)
+{
+ int rc = 0;
+ struct atmel_private *priv = netdev_priv(dev);
+
+ /* reset pccard */
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(dev, GCR, 0x0060);
+
+ atmel_write16(dev, GCR, 0x0040);
+ mdelay(500);
+
+ if (atmel_read16(dev, MR2) == 0) {
+ /* No stored firmware so load a small stub which just
+ tells us the MAC address */
+ int i;
+ priv->card_type = CARD_TYPE_EEPROM;
+ atmel_write16(dev, BSR, BSS_IRAM);
+ atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
+ atmel_set_gcr(dev, GCR_REMAP);
+ atmel_clear_gcr(priv->dev, 0x0040);
+ atmel_write16(dev, BSR, BSS_SRAM);
+ for (i = LOOP_RETRY_LIMIT; i; i--)
+ if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
+ break;
+ if (i == 0) {
+ printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
+ } else {
+ atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
+ /* got address, now squash it again until the network
+ interface is opened */
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(dev, GCR, 0x0060);
+ atmel_write16(dev, GCR, 0x0040);
+ rc = 1;
+ }
+ } else if (atmel_read16(dev, MR4) == 0) {
+ /* Mac address easy in this case. */
+ priv->card_type = CARD_TYPE_PARALLEL_FLASH;
+ atmel_write16(dev, BSR, 1);
+ atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
+ atmel_write16(dev, BSR, 0x200);
+ rc = 1;
+ } else {
+ /* Standard firmware in flash, boot it up and ask
+ for the Mac Address */
+ priv->card_type = CARD_TYPE_SPI_FLASH;
+ if (atmel_wakeup_firmware(priv)) {
+ atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);
+
+ /* got address, now squash it again until the network
+ interface is opened */
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(dev, GCR, 0x0060);
+ atmel_write16(dev, GCR, 0x0040);
+ rc = 1;
+ }
+ }
+
+ if (rc) {
+ if (dev->dev_addr[0] == 0xFF) {
+ u8 default_mac[] = {0x00,0x04, 0x25, 0x00, 0x00, 0x00};
+ printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
+ memcpy(dev->dev_addr, default_mac, 6);
+ }
+ printk(KERN_INFO "%s: MAC address %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
+ dev->name,
+ dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5] );
+
+ }
+
+ return rc;
+}
+
+static void build_wep_mib(struct atmel_private *priv)
+/* Move the encyption information on the MIB structure.
+ This routine is for the pre-WPA firmware: later firmware has
+ a different format MIB and a different routine. */
+{
+ struct { /* NB this is matched to the hardware, don't change. */
+ u8 wep_is_on;
+ u8 default_key; /* 0..3 */
+ u8 reserved;
+ u8 exclude_unencrypted;
+
+ u32 WEPICV_error_count;
+ u32 WEP_excluded_count;
+
+ u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
+ u8 encryption_level; /* 0, 1, 2 */
+ u8 reserved2[3];
+ } mib;
+ int i;
+
+ mib.wep_is_on = priv->wep_is_on;
+ if (priv->wep_is_on) {
+ if (priv->wep_key_len[priv->default_key] > 5)
+ mib.encryption_level = 2;
+ else
+ mib.encryption_level = 1;
+ } else {
+ mib.encryption_level = 0;
+ }
+
+ mib.default_key = priv->default_key;
+ mib.exclude_unencrypted = priv->exclude_unencrypted;
+
+ for(i = 0; i < MAX_ENCRYPTION_KEYS; i++)
+ memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);
+
+ atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
+}
+
+static void build_wpa_mib(struct atmel_private *priv)
+{
+ /* This is for the later (WPA enabled) firmware. */
+
+ struct { /* NB this is matched to the hardware, don't change. */
+ u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
+ u8 receiver_address[6];
+ u8 wep_is_on;
+ u8 default_key; /* 0..3 */
+ u8 group_key;
+ u8 exclude_unencrypted;
+ u8 encryption_type;
+ u8 reserved;
+
+ u32 WEPICV_error_count;
+ u32 WEP_excluded_count;
+
+ u8 key_RSC[4][8];
+ } mib;
+
+ int i;
+
+ mib.wep_is_on = priv->wep_is_on;
+ mib.exclude_unencrypted = priv->exclude_unencrypted;
+ memcpy(mib.receiver_address, priv->CurrentBSSID, 6);
+
+ /* zero all the keys before adding in valid ones. */
+ memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));
+
+ if (priv->wep_is_on) {
+ /* There's a comment in the Atmel code to the effect that this is only valid
+ when still using WEP, it may need to be set to something to use WPA */
+ memset(mib.key_RSC, 0, sizeof(mib.key_RSC));
+
+ mib.default_key = mib.group_key = 255;
+ for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
+ if (priv->wep_key_len[i] > 0) {
+ memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
+ if (i == priv->default_key) {
+ mib.default_key = i;
+ mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
+ mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
+ } else {
+ mib.group_key = i;
+ priv->group_cipher_suite = priv->pairwise_cipher_suite;
+ mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
+ mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
+ }
+ }
+ }
+ if (mib.default_key == 255)
+ mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
+ if (mib.group_key == 255)
+ mib.group_key = mib.default_key;
+
+ }
+
+ atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
+}
+
+static int reset_atmel_card(struct net_device *dev)
+{
+ /* do everything necessary to wake up the hardware, including
+ waiting for the lightning strike and throwing the knife switch....
+
+ set all the Mib values which matter in the card to match
+ their settings in the atmel_private structure. Some of these
+ can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
+ can only be changed by tearing down the world and coming back through
+ here.
+
+ This routine is also responsible for initialising some
+ hardware-specific fields in the atmel_private structure,
+ including a copy of the firmware's hostinfo stucture
+ which is the route into the rest of the firmare datastructures. */
+
+ struct atmel_private *priv = netdev_priv(dev);
+ u8 configuration;
+
+ /* data to add to the firmware names, in priority order
+ this implemenents firmware versioning */
+
+ static char *firmware_modifier[] = {
+ "-wpa",
+ "",
+ NULL
+ };
+
+ /* reset pccard */
+ if (priv->bus_type == BUS_TYPE_PCCARD)
+ atmel_write16(priv->dev, GCR, 0x0060);
+
+ /* stop card , disable interrupts */
+ atmel_write16(priv->dev, GCR, 0x0040);
+
+ if (priv->card_type == CARD_TYPE_EEPROM) {
+ /* copy in firmware if needed */
+ const struct firmware *fw_entry = NULL;
+ unsigned char *fw;
+ int len = priv->firmware_length;
+ if (!(fw = priv->firmware)) {
+ if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
+ if (strlen(priv->firmware_id) == 0) {
+ printk(KERN_INFO
+ "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
+ dev->name);
+ printk(KERN_INFO
+ "%s: if not, use the firmware= module parameter.\n",
+ dev->name);
+ strcpy(priv->firmware_id, "atmel_at76c502.bin");
+ }
+ if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) {
+ printk(KERN_ALERT
+ "%s: firmware %s is missing, cannot continue.\n",
+ dev->name, priv->firmware_id);
+ return 0;
+ }
+ } else {
+ int fw_index = 0;
+ int success = 0;
+
+ /* get firmware filename entry based on firmware type ID */
+ while (fw_table[fw_index].fw_type != priv->firmware_type
+ && fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
+ fw_index++;
+
+ /* construct the actual firmware file name */
+ if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
+ int i;
+ for (i = 0; firmware_modifier[i]; i++) {
+ snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
+ firmware_modifier[i], fw_table[fw_index].fw_file_ext);
+ priv->firmware_id[31] = '\0';
+ if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
+ success = 1;
+ break;
+ }
+ }
+ }
+ if (!success) {
+ printk(KERN_ALERT
+ "%s: firmware %s is missing, cannot start.\n",
+ dev->name, priv->firmware_id);
+ priv->firmware_id[0] = '\0';
+ return 0;
+ }
+ }
+
+ fw = fw_entry->data;
+ len = fw_entry->size;
+ }
+
+ if (len <= 0x6000) {
+ atmel_write16(priv->dev, BSR, BSS_IRAM);
+ atmel_copy_to_card(priv->dev, 0, fw, len);
+ atmel_set_gcr(priv->dev, GCR_REMAP);
+ } else {
+ /* Remap */
+ atmel_set_gcr(priv->dev, GCR_REMAP);
+ atmel_write16(priv->dev, BSR, BSS_IRAM);
+ atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
+ atmel_write16(priv->dev, BSR, 0x2ff);
+ atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
+ }
+
+ if (fw_entry)
+ release_firmware(fw_entry);
+ }
+
+ if (!atmel_wakeup_firmware(priv))
+ return 0;
+
+ /* Check the version and set the correct flag for wpa stuff,
+ old and new firmware is incompatible.
+ The pre-wpa 3com firmware reports major version 5,
+ the wpa 3com firmware is major version 4 and doesn't need
+ the 3com broken-ness filter. */
+ priv->use_wpa = (priv->host_info.major_version == 4);
+ priv->radio_on_broken = (priv->host_info.major_version == 5);
+
+ /* unmask all irq sources */
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);
+
+ /* int Tx system and enable Tx */
+ atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
+ atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
+ atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
+ atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);
+
+ priv->tx_desc_free = priv->host_info.tx_desc_count;
+ priv->tx_desc_head = 0;
+ priv->tx_desc_tail = 0;
+ priv->tx_desc_previous = 0;
+ priv->tx_free_mem = priv->host_info.tx_buff_size;
+ priv->tx_buff_head = 0;
+ priv->tx_buff_tail = 0;
+
+ configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
+ configuration | FUNC_CTRL_TxENABLE);
+
+ /* init Rx system and enable */
+ priv->rx_desc_head = 0;
+
+ configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
+ configuration | FUNC_CTRL_RxENABLE);
+
+ if (!priv->radio_on_broken) {
+ if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
+ CMD_STATUS_REJECTED_RADIO_OFF) {
+ printk(KERN_INFO
+ "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n",
+ dev->name);
+ return 0;
+ }
+ }
+
+ /* set up enough MIB values to run. */
+ atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
+ atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_TX_PROMISCUOUS_POS, PROM_MODE_OFF);
+ atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
+ atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
+ atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
+ atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
+ atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
+ atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
+ priv->dev->dev_addr, 6);
+ atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
+ atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
+ atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
+ atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
+ if (priv->use_wpa)
+ build_wpa_mib(priv);
+ else
+ build_wep_mib(priv);
+
+ return 1;
+}
+
+static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size)
+{
+ if (cmd)
+ atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
+ cmd, cmd_size);
+
+ atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
+ atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
+}
+
+static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size)
+{
+ int i, status;
+
+ atmel_send_command(priv, command, cmd, cmd_size);
+
+ for (i = 5000; i; i--) {
+ status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
+ if (status != CMD_STATUS_IDLE &&
+ status != CMD_STATUS_IN_PROGRESS)
+ break;
+ udelay(20);
+ }
+
+ if (i == 0) {
+ printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
+ status = CMD_STATUS_HOST_ERROR;
+ } else {
+ if (command != CMD_EnableRadio)
+ status = CMD_STATUS_COMPLETE;
+ }
+
+ return status;
+}
+
+static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
+{
+ struct get_set_mib m;
+ m.type = type;
+ m.size = 1;
+ m.index = index;
+
+ atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
+ return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
+}
+
+static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
+{
+ struct get_set_mib m;
+ m.type = type;
+ m.size = 1;
+ m.index = index;
+ m.data[0] = data;
+
+ atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
+}
+
+static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index, u16 data)
+{
+ struct get_set_mib m;
+ m.type = type;
+ m.size = 2;
+ m.index = index;
+ m.data[0] = data;
+ m.data[1] = data >> 8;
+
+ atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
+}
+
+static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
+{
+ struct get_set_mib m;
+ m.type = type;
+ m.size = data_len;
+ m.index = index;
+
+ if (data_len > MIB_MAX_DATA_BYTES)
+ printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
+
+ memcpy(m.data, data, data_len);
+ atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
+}
+
+static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index, u8 *data, int data_len)
+{
+ struct get_set_mib m;
+ m.type = type;
+ m.size = data_len;
+ m.index = index;
+
+ if (data_len > MIB_MAX_DATA_BYTES)
+ printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);
+
+ atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
+ atmel_copy_to_host(priv->dev, data,
+ atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
+}
+
+static void atmel_writeAR(struct net_device *dev, u16 data)
+{
+ int i;
+ outw(data, dev->base_addr + AR);
+ /* Address register appears to need some convincing..... */
+ for (i = 0; data != inw(dev->base_addr + AR) && i<10; i++)
+ outw(data, dev->base_addr + AR);
+}
+
+static void atmel_copy_to_card(struct net_device *dev, u16 dest, unsigned char *src, u16 len)
+{
+ int i;
+ atmel_writeAR(dev, dest);
+ if (dest % 2) {
+ atmel_write8(dev, DR, *src);
+ src++; len--;
+ }
+ for (i = len; i > 1 ; i -= 2) {
+ u8 lb = *src++;
+ u8 hb = *src++;
+ atmel_write16(dev, DR, lb | (hb << 8));
+ }
+ if (i)
+ atmel_write8(dev, DR, *src);
+}
+
+static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest, u16 src, u16 len)
+{
+ int i;
+ atmel_writeAR(dev, src);
+ if (src % 2) {
+ *dest = atmel_read8(dev, DR);
+ dest++; len--;
+ }
+ for (i = len; i > 1 ; i -= 2) {
+ u16 hw = atmel_read16(dev, DR);
+ *dest++ = hw;
+ *dest++ = hw >> 8;
+ }
+ if (i)
+ *dest = atmel_read8(dev, DR);
+}
+
+static void atmel_set_gcr(struct net_device *dev, u16 mask)
+{
+ outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
+}
+
+static void atmel_clear_gcr(struct net_device *dev, u16 mask)
+{
+ outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
+}
+
+static int atmel_lock_mac(struct atmel_private *priv)
+{
+ int i, j = 20;
+ retry:
+ for (i = 5000; i; i--) {
+ if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
+ break;
+ udelay(20);
+ }
+
+ if (!i) return 0; /* timed out */
+
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
+ if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
+ atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
+ if (!j--) return 0; /* timed out */
+ goto retry;
+ }
+
+ return 1;
+}
+
+static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
+{
+ atmel_writeAR(priv->dev, pos);
+ atmel_write16(priv->dev, DR, data); /* card is little-endian */
+ atmel_write16(priv->dev, DR, data >> 16);
+}
+
+/***************************************************************************/
+/* There follows the source form of the MAC address reading firmware */
+/***************************************************************************/
+#if 0
+
+/* Copyright 2003 Matthew T. Russotto */
+/* But derived from the Atmel 76C502 firmware written by Atmel and */
+/* included in "atmel wireless lan drivers" package */
+/**
+ This file is part of net.russotto.AtmelMACFW, hereto referred to
+ as AtmelMACFW
+
+ AtmelMACFW is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2
+ as published by the Free Software Foundation.
+
+ AtmelMACFW 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 AtmelMACFW; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+****************************************************************************/
+/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E */
+/* It will probably work on the 76C504 and 76C502 RFMD_3COM */
+/* It only works on SPI EEPROM versions of the card. */
+
+/* This firmware initializes the SPI controller and clock, reads the MAC */
+/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC */
+/* address in MR2, and sets MR3 to 0x10 to indicate it is done */
+/* It also puts a complete copy of the EEPROM in SRAM with the offset in */
+/* MR4, for investigational purposes (maybe we can determine chip type */
+/* from that?) */
+
+ .org 0
+ .set MRBASE, 0x8000000
+ .set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
+ .set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
+ .set SRAM_BASE, 0x02000000
+ .set SP_BASE, 0x0F300000
+ .set UNK_BASE, 0x0F000000 /* Some internal device, but which one? */
+ .set SPI_CGEN_BASE, 0x0E000000 /* Some internal device, but which one? */
+ .set UNK3_BASE, 0x02014000 /* Some internal device, but which one? */
+ .set STACK_BASE, 0x5600
+ .set SP_SR, 0x10
+ .set SP_TDRE, 2 /* status register bit -- TDR empty */
+ .set SP_RDRF, 1 /* status register bit -- RDR full */
+ .set SP_SWRST, 0x80
+ .set SP_SPIEN, 0x1
+ .set SP_CR, 0 /* control register */
+ .set SP_MR, 4 /* mode register */
+ .set SP_RDR, 0x08 /* Read Data Register */
+ .set SP_TDR, 0x0C /* Transmit Data Register */
+ .set SP_CSR0, 0x30 /* chip select registers */
+ .set SP_CSR1, 0x34
+ .set SP_CSR2, 0x38
+ .set SP_CSR3, 0x3C
+ .set NVRAM_CMD_RDSR, 5 /* read status register */
+ .set NVRAM_CMD_READ, 3 /* read data */
+ .set NVRAM_SR_RDY, 1 /* RDY bit. This bit is inverted */
+ .set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
+ serial output, since SO is normally high. But it
+ does cause 8 clock cycles and thus 8 bits to be
+ clocked in to the chip. See Atmel's SPI
+ controller (e.g. AT91M55800) timing and 4K
+ SPI EEPROM manuals */
+
+ .set NVRAM_SCRATCH, 0x02000100 /* arbitrary area for scratchpad memory */
+ .set NVRAM_IMAGE, 0x02000200
+ .set NVRAM_LENGTH, 0x0200
+ .set MAC_ADDRESS_MIB, SRAM_BASE
+ .set MAC_ADDRESS_LENGTH, 6
+ .set MAC_BOOT_FLAG, 0x10
+ .set MR1, 0
+ .set MR2, 4
+ .set MR3, 8
+ .set MR4, 0xC
+RESET_VECTOR:
+ b RESET_HANDLER
+UNDEF_VECTOR:
+ b HALT1
+SWI_VECTOR:
+ b HALT1
+IABORT_VECTOR:
+ b HALT1
+DABORT_VECTOR:
+RESERVED_VECTOR:
+ b HALT1
+IRQ_VECTOR:
+ b HALT1
+FIQ_VECTOR:
+ b HALT1
+HALT1: b HALT1
+RESET_HANDLER:
+ mov r0, #CPSR_INITIAL
+ msr CPSR_c, r0 /* This is probably unnecessary */
+
+/* I'm guessing this is initializing clock generator electronics for SPI */
+ ldr r0, =SPI_CGEN_BASE
+ mov r1, #0
+ mov r1, r1, lsl #3
+ orr r1,r1, #0
+ str r1, [r0]
+ ldr r1, [r0, #28]
+ bic r1, r1, #16
+ str r1, [r0, #28]
+ mov r1, #1
+ str r1, [r0, #8]
+
+ ldr r0, =MRBASE
+ mov r1, #0
+ strh r1, [r0, #MR1]
+ strh r1, [r0, #MR2]
+ strh r1, [r0, #MR3]
+ strh r1, [r0, #MR4]
+
+ mov sp, #STACK_BASE
+ bl SP_INIT
+ mov r0, #10
+ bl DELAY9
+ bl GET_MAC_ADDR
+ bl GET_WHOLE_NVRAM
+ ldr r0, =MRBASE
+ ldr r1, =MAC_ADDRESS_MIB
+ strh r1, [r0, #MR2]
+ ldr r1, =NVRAM_IMAGE
+ strh r1, [r0, #MR4]
+ mov r1, #MAC_BOOT_FLAG
+ strh r1, [r0, #MR3]
+HALT2: b HALT2
+.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
+GET_WHOLE_NVRAM:
+ stmdb sp!, {lr}
+ mov r2, #0 /* 0th bytes of NVRAM */
+ mov r3, #NVRAM_LENGTH
+ mov r1, #0 /* not used in routine */
+ ldr r0, =NVRAM_IMAGE
+ bl NVRAM_XFER
+ ldmia sp!, {lr}
+ bx lr
+.endfunc
+
+.func Get_MAC_Addr, GET_MAC_ADDR
+GET_MAC_ADDR:
+ stmdb sp!, {lr}
+ mov r2, #0x120 /* address of MAC Address within NVRAM */
+ mov r3, #MAC_ADDRESS_LENGTH
+ mov r1, #0 /* not used in routine */
+ ldr r0, =MAC_ADDRESS_MIB
+ bl NVRAM_XFER
+ ldmia sp!, {lr}
+ bx lr
+.endfunc
+.ltorg
+.func Delay9, DELAY9
+DELAY9:
+ adds r0, r0, r0, LSL #3 /* r0 = r0 * 9 */
+DELAYLOOP:
+ beq DELAY9_done
+ subs r0, r0, #1
+ b DELAYLOOP
+DELAY9_done:
+ bx lr
+.endfunc
+
+.func SP_Init, SP_INIT
+SP_INIT:
+ mov r1, #SP_SWRST
+ ldr r0, =SP_BASE
+ str r1, [r0, #SP_CR] /* reset the SPI */
+ mov r1, #0
+ str r1, [r0, #SP_CR] /* release SPI from reset state */
+ mov r1, #SP_SPIEN
+ str r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
+ str r1, [r0, #SP_CR] /* enable the SPI */
+
+/* My guess would be this turns on the SPI clock */
+ ldr r3, =SPI_CGEN_BASE
+ ldr r1, [r3, #28]
+ orr r1, r1, #0x2000
+ str r1, [r3, #28]
+
+ ldr r1, =0x2000c01
+ str r1, [r0, #SP_CSR0]
+ ldr r1, =0x2000201
+ str r1, [r0, #SP_CSR1]
+ str r1, [r0, #SP_CSR2]
+ str r1, [r0, #SP_CSR3]
+ ldr r1, [r0, #SP_SR]
+ ldr r0, [r0, #SP_RDR]
+ bx lr
+.endfunc
+.func NVRAM_Init, NVRAM_INIT
+NVRAM_INIT:
+ ldr r1, =SP_BASE
+ ldr r0, [r1, #SP_RDR]
+ mov r0, #NVRAM_CMD_RDSR
+ str r0, [r1, #SP_TDR]
+SP_loop1:
+ ldr r0, [r1, #SP_SR]
+ tst r0, #SP_TDRE
+ beq SP_loop1
+
+ mov r0, #SPI_8CLOCKS
+ str r0, [r1, #SP_TDR]
+SP_loop2:
+ ldr r0, [r1, #SP_SR]
+ tst r0, #SP_TDRE
+ beq SP_loop2
+
+ ldr r0, [r1, #SP_RDR]
+SP_loop3:
+ ldr r0, [r1, #SP_SR]
+ tst r0, #SP_RDRF
+ beq SP_loop3
+
+ ldr r0, [r1, #SP_RDR]
+ and r0, r0, #255
+ bx lr
+.endfunc
+
+.func NVRAM_Xfer, NVRAM_XFER
+ /* r0 = dest address */
+ /* r1 = not used */
+ /* r2 = src address within NVRAM */
+ /* r3 = length */
+NVRAM_XFER:
+ stmdb sp!, {r4, r5, lr}
+ mov r5, r0 /* save r0 (dest address) */
+ mov r4, r3 /* save r3 (length) */
+ mov r0, r2, LSR #5 /* SPI memories put A8 in the command field */
+ and r0, r0, #8
+ add r0, r0, #NVRAM_CMD_READ
+ ldr r1, =NVRAM_SCRATCH
+ strb r0, [r1, #0] /* save command in NVRAM_SCRATCH[0] */
+ strb r2, [r1, #1] /* save low byte of source address in NVRAM_SCRATCH[1] */
+_local1:
+ bl NVRAM_INIT
+ tst r0, #NVRAM_SR_RDY
+ bne _local1
+ mov r0, #20
+ bl DELAY9
+ mov r2, r4 /* length */
+ mov r1, r5 /* dest address */
+ mov r0, #2 /* bytes to transfer in command */
+ bl NVRAM_XFER2
+ ldmia sp!, {r4, r5, lr}
+ bx lr
+.endfunc
+
+.func NVRAM_Xfer2, NVRAM_XFER2
+NVRAM_XFER2:
+ stmdb sp!, {r4, r5, r6, lr}
+ ldr r4, =SP_BASE
+ mov r3, #0
+ cmp r0, #0
+ bls _local2
+ ldr r5, =NVRAM_SCRATCH
+_local4:
+ ldrb r6, [r5, r3]
+ str r6, [r4, #SP_TDR]
+_local3:
+ ldr r6, [r4, #SP_SR]
+ tst r6, #SP_TDRE
+ beq _local3
+ add r3, r3, #1
+ cmp r3, r0 /* r0 is # of bytes to send out (command+addr) */
+ blo _local4
+_local2:
+ mov r3, #SPI_8CLOCKS
+ str r3, [r4, #SP_TDR]
+ ldr r0, [r4, #SP_RDR]
+_local5:
+ ldr r0, [r4, #SP_SR]
+ tst r0, #SP_RDRF
+ beq _local5
+ 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 */
+ mov r0, #0
+ cmp r2, #0 /* r2 is # of bytes to copy in */
+ bls _local6
+_local7:
+ ldr r5, [r4, #SP_SR]
+ tst r5, #SP_TDRE
+ beq _local7
+ str r3, [r4, #SP_TDR] /* r3 has SPI_8CLOCKS */
+_local8:
+ ldr r5, [r4, #SP_SR]
+ tst r5, #SP_RDRF
+ beq _local8
+ ldr r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
+ strb r5, [r1], #1 /* postindexed */
+ add r0, r0, #1
+ cmp r0, r2
+ blo _local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
+_local6:
+ mov r0, #200
+ bl DELAY9
+ ldmia sp!, {r4, r5, r6, lr}
+ bx lr
+#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 10:55:46 +0300