| /*** -*- 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, see |
| <http://www.gnu.org/licenses/>. |
| |
| 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/interrupt.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/ptrace.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <asm/byteorder.h> |
| #include <asm/io.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/crc32.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/device.h> |
| #include <linux/moduleparam.h> |
| #include <linux/firmware.h> |
| #include <linux/jiffies.h> |
| #include <net/cfg80211.h> |
| #include "atmel.h" |
| |
| #define DRIVER_MAJOR 0 |
| #define DRIVER_MINOR 98 |
| |
| 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 } |
| }; |
| MODULE_FIRMWARE("atmel_at76c502-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c502.bin"); |
| MODULE_FIRMWARE("atmel_at76c502d-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c502d.bin"); |
| MODULE_FIRMWARE("atmel_at76c502e-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c502e.bin"); |
| MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c502_3com.bin"); |
| MODULE_FIRMWARE("atmel_at76c504-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c504.bin"); |
| MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c504_2958.bin"); |
| MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c504a_2958.bin"); |
| MODULE_FIRMWARE("atmel_at76c506-wpa.bin"); |
| MODULE_FIRMWARE("atmel_at76c506.bin"); |
| |
| #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 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 structure 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; |
| 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; |
| unsigned long 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, |
| const 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 ieee80211_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 ieee80211_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->dev->stats.tx_packets++; |
| else |
| priv->dev->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 netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) |
| { |
| static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; |
| struct atmel_private *priv = netdev_priv(dev); |
| struct ieee80211_hdr header; |
| unsigned long flags; |
| u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN; |
| |
| if (priv->card && priv->present_callback && |
| !(*priv->present_callback)(priv->card)) { |
| dev->stats.tx_errors++; |
| dev_kfree_skb(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| if (priv->station_state != STATION_STATE_READY) { |
| dev->stats.tx_errors++; |
| dev_kfree_skb(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| /* 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))) { |
| dev->stats.tx_dropped++; |
| spin_unlock_irqrestore(&priv->irqlock, flags); |
| spin_unlock_bh(&priv->timerlock); |
| netif_stop_queue(dev); |
| return NETDEV_TX_BUSY; |
| } |
| |
| frame_ctl = IEEE80211_FTYPE_DATA; |
| header.duration_id = 0; |
| header.seq_ctrl = 0; |
| if (priv->wep_is_on) |
| frame_ctl |= IEEE80211_FCTL_PROTECTED; |
| if (priv->operating_mode == IW_MODE_ADHOC) { |
| skb_copy_from_linear_data(skb, &header.addr1, ETH_ALEN); |
| memcpy(&header.addr2, dev->dev_addr, ETH_ALEN); |
| memcpy(&header.addr3, priv->BSSID, ETH_ALEN); |
| } else { |
| frame_ctl |= IEEE80211_FCTL_TODS; |
| memcpy(&header.addr1, priv->CurrentBSSID, ETH_ALEN); |
| memcpy(&header.addr2, dev->dev_addr, ETH_ALEN); |
| skb_copy_from_linear_data(skb, &header.addr3, ETH_ALEN); |
| } |
| |
| if (priv->use_wpa) |
| memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN); |
| |
| header.frame_control = 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->stats.tx_bytes += len; |
| |
| spin_unlock_irqrestore(&priv->irqlock, flags); |
| spin_unlock_bh(&priv->timerlock); |
| dev_kfree_skb(skb); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static void atmel_transmit_management_frame(struct atmel_private *priv, |
| struct ieee80211_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 ieee80211_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->dev->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->dev->stats.rx_crc_errors++; |
| dev_kfree_skb(skb); |
| return; |
| } |
| } |
| |
| memcpy(skbp, header->addr1, ETH_ALEN); /* destination address */ |
| if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS) |
| memcpy(&skbp[ETH_ALEN], header->addr3, ETH_ALEN); |
| else |
| memcpy(&skbp[ETH_ALEN], header->addr2, ETH_ALEN); /* source address */ |
| |
| skb->protocol = eth_type_trans(skb, priv->dev); |
| skb->ip_summed = CHECKSUM_NONE; |
| netif_rx(skb); |
| priv->dev->stats.rx_bytes += 12 + msdu_size; |
| priv->dev->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 ieee80211_hdr *header, |
| u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, |
| u8 frag_no, int more_frags) |
| { |
| u8 mac4[ETH_ALEN]; |
| u8 source[ETH_ALEN]; |
| struct sk_buff *skb; |
| |
| if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS) |
| memcpy(source, header->addr3, ETH_ALEN); |
| else |
| memcpy(source, header->addr2, ETH_ALEN); |
| |
| 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, ETH_ALEN); |
| msdu_size -= ETH_ALEN; |
| rx_packet_loc += ETH_ALEN; |
| |
| 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, ETH_ALEN); |
| memcpy(&priv->rx_buf[ETH_ALEN], source, ETH_ALEN); |
| memcpy(priv->rx_buf, header->addr1, ETH_ALEN); |
| |
| 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->dev->stats.rx_crc_errors++; |
| eth_broadcast_addr(priv->frag_source); |
| } |
| } |
| |
| } else if (priv->frag_no == frag_no && |
| priv->frag_seq == seq_no && |
| memcmp(priv->frag_source, source, ETH_ALEN) == 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->dev->stats.rx_crc_errors++; |
| eth_broadcast_addr(priv->frag_source); |
| more_frags = 1; /* don't send broken assembly */ |
| } |
| } |
| |
| priv->frag_len += msdu_size; |
| priv->frag_no++; |
| |
| if (!more_frags) { /* last one */ |
| eth_broadcast_addr(priv->frag_source); |
| if (!(skb = dev_alloc_skb(priv->frag_len + 14))) { |
| priv->dev->stats.rx_dropped++; |
| } else { |
| skb_reserve(skb, 2); |
| memcpy(skb_put(skb, priv->frag_len + 12), |
| priv->rx_buf, |
| priv->frag_len + 12); |
| skb->protocol = eth_type_trans(skb, priv->dev); |
| skb->ip_summed = CHECKSUM_NONE; |
| netif_rx(skb); |
| priv->dev->stats.rx_bytes += priv->frag_len + 12; |
| priv->dev->stats.rx_packets++; |
| } |
| } |
| } else |
| priv->wstats.discard.fragment++; |
| } |
| |
| static void rx_done_irq(struct atmel_private *priv) |
| { |
| int i; |
| struct ieee80211_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->dev->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->dev->stats.rx_errors++; |
| goto next; |
| } |
| |
| /* Get header as far as end of seq_ctrl */ |
| atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24); |
| frame_ctl = le16_to_cpu(header.frame_control); |
| seq_control = le16_to_cpu(header.seq_ctrl); |
| |
| /* 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 & IEEE80211_FCTL_PROTECTED)) { |
| 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 & IEEE80211_FCTL_PROTECTED))) { |
| crc = crc32_le(0xffffffff, (unsigned char *)&header, 24); |
| } |
| msdu_size -= 24; /* header */ |
| |
| if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) { |
| int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS; |
| u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG; |
| u16 packet_sequence_no = (seq_control & IEEE80211_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 & IEEE80211_FCTL_FTYPE) == IEEE80211_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 */ |
| eth_broadcast_addr(priv->frag_source); |
| |
| 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->dev->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 net_device *dev = (struct net_device *) dev_id; |
| struct atmel_private *priv = netdev_priv(dev); |
| u8 isr; |
| int i = -1; |
| static const 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 < ARRAY_SIZE(irq_order); 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 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_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, err; |
| |
| /* 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; |
| |
| err = reset_atmel_card(dev); |
| if (err) |
| return err; |
| |
| 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 < ARRAY_SIZE(channel_table); i++) |
| if (priv->reg_domain == channel_table[i].reg_domain) |
| break; |
| if (i == ARRAY_SIZE(channel_table)) { |
| 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); |
| |
| /* Send event to userspace that we are disassociating */ |
| if (priv->station_state == STATION_STATE_READY) { |
| union iwreq_data wrqu; |
| |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| eth_zero_addr(wrqu.ap_addr.sa_data); |
| wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); |
| } |
| |
| 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 < ARRAY_SIZE(channel_table); 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_show(struct seq_file *m, void *v) |
| { |
| struct atmel_private *priv = m->private; |
| int i; |
| char *s, *r, *c; |
| |
| seq_printf(m, "Driver version:\t\t%d.%d\n", DRIVER_MAJOR, DRIVER_MINOR); |
| |
| if (priv->station_state != STATION_STATE_DOWN) { |
| seq_printf(m, |
| "Firmware version:\t%d.%d build %d\n" |
| "Firmware location:\t", |
| priv->host_info.major_version, |
| priv->host_info.minor_version, |
| priv->host_info.build_version); |
| |
| if (priv->card_type != CARD_TYPE_EEPROM) |
| seq_puts(m, "on card\n"); |
| else if (priv->firmware) |
| seq_printf(m, "%s loaded by host\n", priv->firmware_id); |
| else |
| seq_printf(m, "%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 < ARRAY_SIZE(channel_table); i++) |
| if (priv->reg_domain == channel_table[i].reg_domain) |
| r = channel_table[i].name; |
| |
| seq_printf(m, "MAC memory type:\t%s\n", c); |
| seq_printf(m, "Regulatory domain:\t%s\n", r); |
| seq_printf(m, "Host CRC checking:\t%s\n", |
| priv->do_rx_crc ? "On" : "Off"); |
| seq_printf(m, "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>"; |
| } |
| |
| seq_printf(m, "Current state:\t\t%s\n", s); |
| return 0; |
| } |
| |
| static int atmel_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, atmel_proc_show, PDE_DATA(inode)); |
| } |
| |
| static const struct file_operations atmel_proc_fops = { |
| .open = atmel_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| static const struct net_device_ops atmel_netdev_ops = { |
| .ndo_open = atmel_open, |
| .ndo_stop = atmel_close, |
| .ndo_set_mac_address = atmel_set_mac_address, |
| .ndo_start_xmit = start_tx, |
| .ndo_do_ioctl = atmel_ioctl, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| struct net_device *init_atmel_card(unsigned short irq, unsigned long 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) |
| 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; |
| priv->last_qual = jiffies; |
| priv->last_beacon_timestamp = 0; |
| memset(priv->frag_source, 0xff, sizeof(priv->frag_source)); |
| eth_zero_addr(priv->BSSID); |
| 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->netdev_ops = &atmel_netdev_ops; |
| dev->wireless_handlers = &atmel_handler_def; |
| dev->irq = irq; |
| dev->base_addr = port; |
| |
| /* MTU range: 68 - 2312 */ |
| dev->min_mtu = 68; |
| dev->max_mtu = MAX_WIRELESS_BODY - ETH_FCS_LEN; |
| |
| SET_NETDEV_DEV(dev, sys_dev); |
| |
| if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) { |
| printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc); |
| goto err_out_free; |
| } |
| |
| if (!request_region(dev->base_addr, 32, |
| priv->bus_type == BUS_TYPE_PCCARD ? "atmel_cs" : "atmel_pci")) { |
| 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); |
| |
| if (!proc_create_data("driver/atmel", 0, NULL, &atmel_proc_fops, priv)) |
| printk(KERN_WARNING "atmel: unable to create /proc entry.\n"); |
| |
| printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n", |
| dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr); |
| |
| return dev; |
| |
| err_out_res: |
| release_region(dev->base_addr, 32); |
| 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) |
| { |
| 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); |
| kfree(priv->firmware); |
| release_region(dev->base_addr, 32); |
| 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) |
| return -E2BIG; |
| if (index != 0) |
| return -EINVAL; |
| |
| memcpy(priv->new_SSID, extra, dwrq->length); |
| priv->new_SSID_size = dwrq->length; |
| } |
| |
| 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); |
| dwrq->length = priv->new_SSID_size; |
| } else { |
| memcpy(extra, priv->SSID, priv->SSID_size); |
| dwrq->length = priv->SSID_size; |
| } |
| |
| 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, ETH_ALEN); |
| 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_128; |
| priv->encryption_level = 2; |
| } else { |
| priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64; |
| 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_set_encodeext(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, |
| char *extra) |
| { |
| struct atmel_private *priv = netdev_priv(dev); |
| struct iw_point *encoding = &wrqu->encoding; |
| struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; |
| int idx, key_len, alg = ext->alg, set_key = 1; |
| |
| /* Determine and validate the key index */ |
| idx = encoding->flags & IW_ENCODE_INDEX; |
| if (idx) { |
| if (idx < 1 || idx > 4) |
| return -EINVAL; |
| idx--; |
| } else |
| idx = priv->default_key; |
| |
| if (encoding->flags & IW_ENCODE_DISABLED) |
| alg = IW_ENCODE_ALG_NONE; |
| |
| if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) { |
| priv->default_key = idx; |
| set_key = ext->key_len > 0 ? 1 : 0; |
| } |
| |
| if (set_key) { |
| /* Set the requested key first */ |
| switch (alg) { |
| case IW_ENCODE_ALG_NONE: |
| priv->wep_is_on = 0; |
| priv->encryption_level = 0; |
| priv->pairwise_cipher_suite = CIPHER_SUITE_NONE; |
| break; |
| case IW_ENCODE_ALG_WEP: |
| if (ext->key_len > 5) { |
| priv->wep_key_len[idx] = 13; |
| priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128; |
| priv->encryption_level = 2; |
| } else if (ext->key_len > 0) { |
| priv->wep_key_len[idx] = 5; |
| priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64; |
| priv->encryption_level = 1; |
| } else { |
| return -EINVAL; |
| } |
| priv->wep_is_on = 1; |
| memset(priv->wep_keys[idx], 0, 13); |
| key_len = min ((int)ext->key_len, priv->wep_key_len[idx]); |
| memcpy(priv->wep_keys[idx], ext->key, key_len); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| return -EINPROGRESS; |
| } |
| |
| static int atmel_get_encodeext(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, |
| char *extra) |
| { |
| struct atmel_private *priv = netdev_priv(dev); |
| struct iw_point *encoding = &wrqu->encoding; |
| struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; |
| int idx, max_key_len; |
| |
| max_key_len = encoding->length - sizeof(*ext); |
| if (max_key_len < 0) |
| return -EINVAL; |
| |
| idx = encoding->flags & IW_ENCODE_INDEX; |
| if (idx) { |
| if (idx < 1 || idx > 4) |
| return -EINVAL; |
| idx--; |
| } else |
| idx = priv->default_key; |
| |
| encoding->flags = idx + 1; |
| memset(ext, 0, sizeof(*ext)); |
| |
| if (!priv->wep_is_on) { |
| ext->alg = IW_ENCODE_ALG_NONE; |
| ext->key_len = 0; |
| encoding->flags |= IW_ENCODE_DISABLED; |
| } else { |
| if (priv->encryption_level > 0) |
| ext->alg = IW_ENCODE_ALG_WEP; |
| else |
| return -EINVAL; |
| |
| ext->key_len = priv->wep_key_len[idx]; |
| memcpy(ext->key, priv->wep_keys[idx], ext->key_len); |
| encoding->flags |= IW_ENCODE_ENABLED; |
| } |
| |
| return 0; |
| } |
| |
| static int atmel_set_auth(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct atmel_private *priv = netdev_priv(dev); |
| struct iw_param *param = &wrqu->param; |
| |
| switch (param->flags & IW_AUTH_INDEX) { |
| case IW_AUTH_WPA_VERSION: |
| case IW_AUTH_CIPHER_PAIRWISE: |
| case IW_AUTH_CIPHER_GROUP: |
| case IW_AUTH_KEY_MGMT: |
| case IW_AUTH_RX_UNENCRYPTED_EAPOL: |
| case IW_AUTH_PRIVACY_INVOKED: |
| /* |
| * atmel does not use these parameters |
| */ |
| break; |
| |
| case IW_AUTH_DROP_UNENCRYPTED: |
| priv->exclude_unencrypted = param->value ? 1 : 0; |
| break; |
| |
| case IW_AUTH_80211_AUTH_ALG: { |
| if (param->value & IW_AUTH_ALG_SHARED_KEY) { |
| priv->exclude_unencrypted = 1; |
| } else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) { |
| priv->exclude_unencrypted = 0; |
| } else |
| return -EINVAL; |
| break; |
| } |
| |
| case IW_AUTH_WPA_ENABLED: |
| /* Silently accept disable of WPA */ |
| if (param->value > 0) |
| return -EOPNOTSUPP; |
| break; |
| |
| default: |
| return -EOPNOTSUPP; |
| } |
| return -EINPROGRESS; |
| } |
| |
| static int atmel_get_auth(struct net_device *dev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct atmel_private *priv = netdev_priv(dev); |
| struct iw_param *param = &wrqu->param; |
| |
| switch (param->flags & IW_AUTH_INDEX) { |
| case IW_AUTH_DROP_UNENCRYPTED: |
| param->value = priv->exclude_unencrypted; |
| break; |
| |
| case IW_AUTH_80211_AUTH_ALG: |
| if (priv->exclude_unencrypted == 1) |
| param->value = IW_AUTH_ALG_SHARED_KEY; |
| else |
| param->value = IW_AUTH_ALG_OPEN_SYSTEM; |
| break; |
| |
| case IW_AUTH_WPA_ENABLED: |
| param->value = 0; |
| break; |
| |
| default: |
| return -EOPNOTSUPP; |
| } |
| 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_LONG) |
| priv->long_retry = vwrq->value; |
| else if (vwrq->flags & IW_RETRY_SHORT) |
| 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 short retry number */ |
| if (vwrq->flags & IW_RETRY_LONG) { |
| vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; |
| 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_SHORT; |
| } |
| |
| 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 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) { |
| int f = fwrq->m / 100000; |
| |
| /* Hack to fall through... */ |
| fwrq->e = 0; |
| fwrq->m = ieee80211_frequency_to_channel(f); |
| } |
| /* Setting by channel number */ |
| if (fwrq->m < 0 || 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_point *dwrq, |
| 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 (time_after(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, ETH_ALEN); |
| current_ev = iwe_stream_add_event(info, 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(info, 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(info, 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(info, current_ev, |
| extra + IW_SCAN_MAX_DATA, |
| &iwe, IW_EV_FREQ_LEN); |
| |
| /* Add quality statistics */ |
| iwe.cmd = IWEVQUAL; |
| iwe.u.qual.level = priv->BSSinfo[i].RSSI; |
| iwe.u.qual.qual = iwe.u.qual.level; |
| /* iwe.u.qual.noise = SOMETHING */ |
| current_ev = iwe_stream_add_event(info, current_ev, |
| extra + IW_SCAN_MAX_DATA, |
| &iwe, IW_EV_QUAL_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(info, 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(struct iw_range)); |
| range->min_nwid = 0x0000; |
| range->max_nwid = 0x0000; |
| range->num_channels = 0; |
| for (j = 0; j < ARRAY_SIZE(channel_table); 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 */ |
| |
| /* Values in MHz -> * 10^5 * 10 */ |
| range->freq[k].m = 100000 * |
| ieee80211_channel_to_frequency(i, NL80211_BAND_2GHZ); |
| range->freq[k++].e = 1; |
| } |
| 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 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
| unsigned long flags; |
| |
| if (awrq->sa_family != ARPHRD_ETHER) |
| return -EINVAL; |
| |
| if (!memcmp(any, awrq->sa_data, 6) || |
| !memcmp(off, awrq->sa_data, 6)) { |
| 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 */ |
| (iw_handler) NULL, /* -- hole -- */ |
| (iw_handler) NULL, /* -- hole -- */ |
| (iw_handler) NULL, /* SIOCSIWGENIE */ |
| (iw_handler) NULL, /* SIOCGIWGENIE */ |
| (iw_handler) atmel_set_auth, /* SIOCSIWAUTH */ |
| (iw_handler) atmel_get_auth, /* SIOCGIWAUTH */ |
| (iw_handler) atmel_set_encodeext, /* SIOCSIWENCODEEXT */ |
| (iw_handler) atmel_get_encodeext, /* SIOCGIWENCODEEXT */ |
| (iw_handler) NULL, /* SIOCSIWPMKSA */ |
| }; |
| |
| static const iw_handler atmel_private_handler[] = |
| { |
| NULL, /* SIOCIWFIRSTPRIV */ |
| }; |
| |
| struct atmel_priv_ioctl { |
| char id[32]; |
| unsigned char __user *data; |
| unsigned short len; |
| }; |
| |
| #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 = ATMELFWL, |
| .set_args = IW_PRIV_TYPE_BYTE |
| | IW_PRIV_SIZE_FIXED |
| | sizeof(struct atmel_priv_ioctl), |
| .get_args = IW_PRIV_TYPE_NONE, |
| .name = "atmelfwl" |
| }, { |
| .cmd = ATMELIDIFC, |
| .set_args = IW_PRIV_TYPE_NONE, |
| .get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, |
| .name = "atmelidifc" |
| }, { |
| .cmd = ATMELRD, |
| .set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ, |
| .get_args = IW_PRIV_TYPE_NONE, |
| .name = "regdomain" |
| }, |
| }; |
| |
| static const struct iw_handler_def atmel_handler_def = { |
| .num_standard = ARRAY_SIZE(atmel_handler), |
| .num_private = ARRAY_SIZE(atmel_private_handler), |
| .num_private_args = ARRAY_SIZE(atmel_private_args), |
| .standard = (iw_handler *) atmel_handler, |
| .private = (iw_handler *) atmel_private_handler, |
| .private_args = (struct iw_priv_args *) atmel_private_args, |
| .get_wireless_stats = atmel_get_wireless_stats |
| }; |
| |
| static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| { |
| int i, rc = 0; |
| struct atmel_private *priv = netdev_priv(dev); |
| struct atmel_priv_ioctl com; |
| struct iwreq *wrq = (struct iwreq *) rq; |
| unsigned char *new_firmware; |
| char domain[REGDOMAINSZ + 1]; |
| |
| switch (cmd) { |
| 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; |
| } |
| |
| 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 < ARRAY_SIZE(channel_table); i++) { |
| if (!strcasecmp(channel_table[i].name, domain)) { |
| 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 { |
| __le16 alg; |
| __le16 trans_seq; |
| __le16 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[ETH_ALEN]; |
| u8 SSID[MAX_SSID_LENGTH]; |
| u8 scan_type; |
| u8 channel; |
| __le16 BSS_type; |
| __le16 min_channel_time; |
| __le16 max_channel_time; |
| u8 options; |
| u8 SSID_size; |
| } cmd; |
| |
| eth_broadcast_addr(cmd.BSSID); |
| |
| 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; |
| __le16 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, ETH_ALEN); |
| 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, ETH_ALEN); |
| 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 & WLAN_CAPABILITY_SHORT_PREAMBLE ? |
| 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, u16 system, |
| u8 *challenge, int challenge_len) |
| { |
| struct ieee80211_hdr header; |
| struct auth_body auth; |
| |
| header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); |
| header.duration_id = cpu_to_le16(0x8000); |
| header.seq_ctrl = 0; |
| memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN); |
| memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN); |
| memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN); |
| |
| if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1) |
| /* no WEP for authentication frames with TrSeqNo 1 */ |
| header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| |
| auth.alg = cpu_to_le16(system); |
| |
| 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 ieee80211_hdr header; |
| struct ass_req_format { |
| __le16 capability; |
| __le16 listen_interval; |
| u8 ap[ETH_ALEN]; /* 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_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ)); |
| header.duration_id = cpu_to_le16(0x8000); |
| header.seq_ctrl = 0; |
| |
| memcpy(header.addr1, priv->CurrentBSSID, ETH_ALEN); |
| memcpy(header.addr2, priv->dev->dev_addr, ETH_ALEN); |
| memcpy(header.addr3, priv->CurrentBSSID, ETH_ALEN); |
| |
| body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS); |
| if (priv->wep_is_on) |
| body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); |
| if (priv->preamble == SHORT_PREAMBLE) |
| body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); |
| |
| 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, ETH_ALEN); |
| ssid_el_p = &body.ssid_el_id; |
| bodysize = 18 + priv->SSID_size; |
| } else { |
| ssid_el_p = &body.ap[0]; |
| bodysize = 12 + priv->SSID_size; |
| } |
| |
| ssid_el_p[0] = WLAN_EID_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] = WLAN_EID_SUPP_RATES; |
| ssid_el_p[3 + priv->SSID_size] = 4; /* len of supported 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 ieee80211_hdr *header) |
| { |
| if (le16_to_cpu(header->frame_control) & IEEE80211_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 ieee80211_hdr *header, u16 capability, |
| u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len, |
| u8 *ssid, int is_beacon) |
| { |
| u8 *bss = capability & WLAN_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, ETH_ALEN) == 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, ETH_ALEN); |
| 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 & WLAN_CAPABILITY_PRIVACY; |
| memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len); |
| priv->BSSinfo[index].SSIDsize = ssid_len; |
| |
| if (capability & WLAN_CAPABILITY_IBSS) |
| priv->BSSinfo[index].BSStype = IW_MODE_ADHOC; |
| else if (capability & WLAN_CAPABILITY_ESS) |
| priv->BSSinfo[index].BSStype = IW_MODE_INFRA; |
| |
| priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ? |
| 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); |
| u16 system = le16_to_cpu(auth->alg); |
| |
| if (status == WLAN_STATUS_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 == WLAN_STATUS_SUCCESS && priv->wep_is_on) { |
| int should_associate = 0; |
| /* WEP */ |
| if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum) |
| return; |
| |
| if (system == WLAN_AUTH_OPEN) { |
| if (trans_seq_no == 0x0002) { |
| should_associate = 1; |
| } |
| } else if (system == WLAN_AUTH_SHARED_KEY) { |
| if (trans_seq_no == 0x0002 && |
| auth->el_id == WLAN_EID_CHALLENGE) { |
| send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len); |
| return; |
| } else if (trans_seq_no == 0x0004) { |
| should_associate = 1; |
| } |
| } |
| |
| if (should_associate) { |
| 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 == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
| /* Flip back and forth between WEP auth modes until the max |
| * authentication tries has been exceeded. |
| */ |
| if (system == WLAN_AUTH_OPEN) { |
| priv->CurrentAuthentTransactionSeqNum = 0x001; |
| priv->exclude_unencrypted = 1; |
| send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0); |
| return; |
| } else if (system == WLAN_AUTH_SHARED_KEY |
| && priv->wep_is_on) { |
| priv->CurrentAuthentTransactionSeqNum = 0x001; |
| priv->exclude_unencrypted = 0; |
| send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0); |
| return; |
| } else 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); |
| 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 { |
| __le16 capability; |
| __le16 status; |
| __le16 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; |
| |
| union iwreq_data wrqu; |
| |
| if (frame_len < 8 + rates_len) |
| return; |
| |
| if (status == WLAN_STATUS_SUCCESS) { |
| if (subtype == IEEE80211_STYPE_ASSOC_RESP) |
| 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); |
| |
| /* Send association event to userspace */ |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN); |
| wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); |
| |
| return; |
| } |
| |
| if (subtype == IEEE80211_STYPE_ASSOC_RESP && |
| status != WLAN_STATUS_ASSOC_DENIED_RATES && |
| status != WLAN_STATUS_CAPS_UNSUPPORTED && |
| priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) { |
| mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); |
| priv->AssociationRequestRetryCnt++; |
| send_association_request(priv, 0); |
| return; |
| } |
| |
| if (subtype == IEEE80211_STYPE_REASSOC_RESP && |
| status != WLAN_STATUS_ASSOC_DENIED_RATES && |
| status != WLAN_STATUS_CAPS_UNSUPPORTED && |
| priv->ReAssociationRequestRetryCnt < 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); |
| } |
| } |
| |
| static void atmel_join_bss(struct atmel_private *priv, int bss_index) |
| { |
| struct bss_info *bss = &priv->BSSinfo[bss_index]; |
| |
| memcpy(priv->CurrentBSSID, bss->BSSID, ETH_ALEN); |
| 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 management frames. */ |
| static void atmel_management_frame(struct atmel_private *priv, |
| struct ieee80211_hdr *header, |
| u16 frame_len, u8 rssi) |
| { |
| u16 subtype; |
| |
| subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE; |
| switch (subtype) { |
| case IEEE80211_STYPE_BEACON: |
| case IEEE80211_STYPE_PROBE_RESP: |
| |
| /* beacon frame has multiple variable-length fields - |
| never let an engineer loose with a data structure design. */ |
| { |
| struct beacon_format { |
| __le64 timestamp; |
| __le16 interval; |
| __le16 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 == IEEE80211_STYPE_BEACON); |
| } |
| break; |
| |
| case IEEE80211_STYPE_AUTH: |
| |
| if (priv->station_state == STATION_STATE_AUTHENTICATING) |
| authenticate(priv, frame_len); |
| |
| break; |
| |
| case IEEE80211_STYPE_ASSOC_RESP: |
| case IEEE80211_STYPE_REASSOC_RESP: |
| |
| if (priv->station_state == STATION_STATE_ASSOCIATING || |
| priv->station_state == STATION_STATE_REASSOCIATING) |
| associate(priv, frame_len, subtype); |
| |
| break; |
| |
| case IEEE80211_STYPE_DISASSOC: |
| 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 IEEE80211_STYPE_DEAUTH: |
| 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 { |
| int auth = WLAN_AUTH_OPEN; |
| priv->AuthenticationRequestRetryCnt++; |
| priv->CurrentAuthentTransactionSeqNum = 0x0001; |
| mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); |
| if (priv->wep_is_on && priv->exclude_unencrypted) |
| auth = WLAN_AUTH_SHARED_KEY; |
| send_authentication_request(priv, auth, 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; |
| union iwreq_data wrqu; |
| |
| 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); |
| int notify_scan_complete = 1; |
| 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); |
| notify_scan_complete = 0; |
| } |
| priv->site_survey_state = SITE_SURVEY_COMPLETED; |
| if (notify_scan_complete) { |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); |
| } |
| } |
| 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); |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); |
| } 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 { |
| int auth = WLAN_AUTH_OPEN; |
| priv->AuthenticationRequestRetryCnt = 0; |
| atmel_enter_state(priv, STATION_STATE_AUTHENTICATING); |
| |
| mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES); |
| priv->CurrentAuthentTransactionSeqNum = 0x0001; |
| if (priv->wep_is_on && priv->exclude_unencrypted) |
| auth = WLAN_AUTH_SHARED_KEY; |
| send_authentication_request(priv, auth, 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 -EIO; |
| } |
| |
| if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) { |
| printk(KERN_ALERT "%s: card missing.\n", priv->dev->name); |
| return -ENODEV; |
| } |
| |
| /* 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 -EIO; |
| } |
| |
| /* 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 -EIO; |
| } |
| 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 -EIO; |
| } |
| |
| 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 0; |
| } |
| |
| /* 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) == 0) { |
| 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) { |
| static const 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, ETH_ALEN); |
| } |
| } |
| |
| return rc; |
| } |
| |
| /* 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. */ |
| static void build_wep_mib(struct atmel_private *priv) |
| { |
| 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[ETH_ALEN]; |
| 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, ETH_ALEN); |
| |
| /* 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 structure |
| which is the route into the rest of the firmware datastructures. */ |
| |
| struct atmel_private *priv = netdev_priv(dev); |
| u8 configuration; |
| int old_state = priv->station_state; |
| int err = 0; |
| |
| /* 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; |
| const 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"); |
| } |
| err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev); |
| if (err != 0) { |
| printk(KERN_ALERT |
| "%s: firmware %s is missing, cannot continue.\n", |
| dev->name, priv->firmware_id); |
| return err; |
| } |
| } 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 -ENOENT; |
| } |
| } |
| |
| 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); |
| } |
| |
| release_firmware(fw_entry); |
| } |
| |
| err = atmel_wakeup_firmware(priv); |
| if (err != 0) |
| return err; |
| |
| /* 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.\n", |
| dev->name); |
| return -EIO; |
| } |
| } |
| |
| /* 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); |
| |
| if (old_state == STATION_STATE_READY) { |
| union iwreq_data wrqu; |
| |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| eth_zero_addr(wrqu.ap_addr.sa_data); |
| wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); |
| } |
| |
| return 0; |
| } |
| |
| 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, |
| const 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, see <http://www.gnu.org/licenses/>. |
| |
| ****************************************************************************/ |
| /* 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 |