diff options
Diffstat (limited to 'drivers/net/wireless/atmel.c')
| -rw-r--r-- | drivers/net/wireless/atmel.c | 4272 |
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 |