4526 lines
130 KiB
C
4526 lines
130 KiB
C
/*** -*- linux-c -*- **********************************************************
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Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
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Copyright 2000-2001 ATMEL Corporation.
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Copyright 2003-2004 Simon Kelley.
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This code was developed from version 2.1.1 of the Atmel drivers,
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released by Atmel corp. under the GPL in December 2002. It also
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includes code from the Linux aironet drivers (C) Benjamin Reed,
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and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
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extensions, (C) Jean Tourrilhes.
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The firmware module for reading the MAC address of the card comes from
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net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
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by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
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This file contains the module in binary form and, under the terms
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of the GPL, in source form. The source is located at the end of the file.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Atmel wireless lan drivers; if not, see
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<http://www.gnu.org/licenses/>.
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For all queries about this code, please contact the current author,
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Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
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Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
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hardware used during development of this driver.
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******************************************************************************/
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <asm/byteorder.h>
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#include <asm/io.h>
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#include <linux/uaccess.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/ioport.h>
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#include <linux/fcntl.h>
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#include <linux/delay.h>
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#include <linux/wireless.h>
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#include <net/iw_handler.h>
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#include <linux/crc32.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/device.h>
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#include <linux/moduleparam.h>
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#include <linux/firmware.h>
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#include <linux/jiffies.h>
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#include <net/cfg80211.h>
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#include "atmel.h"
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#define DRIVER_MAJOR 0
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#define DRIVER_MINOR 98
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MODULE_AUTHOR("Simon Kelley");
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MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");
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/* The name of the firmware file to be loaded
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over-rides any automatic selection */
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static char *firmware = NULL;
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module_param(firmware, charp, 0);
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/* table of firmware file names */
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static struct {
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AtmelFWType fw_type;
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const char *fw_file;
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const char *fw_file_ext;
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} fw_table[] = {
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{ ATMEL_FW_TYPE_502, "atmel_at76c502", "bin" },
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{ ATMEL_FW_TYPE_502D, "atmel_at76c502d", "bin" },
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{ ATMEL_FW_TYPE_502E, "atmel_at76c502e", "bin" },
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{ ATMEL_FW_TYPE_502_3COM, "atmel_at76c502_3com", "bin" },
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{ ATMEL_FW_TYPE_504, "atmel_at76c504", "bin" },
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{ ATMEL_FW_TYPE_504_2958, "atmel_at76c504_2958", "bin" },
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{ ATMEL_FW_TYPE_504A_2958, "atmel_at76c504a_2958", "bin" },
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{ ATMEL_FW_TYPE_506, "atmel_at76c506", "bin" },
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{ ATMEL_FW_TYPE_NONE, NULL, NULL }
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};
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MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c502.bin");
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MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c502d.bin");
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MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c502e.bin");
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MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c502_3com.bin");
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MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c504.bin");
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MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c504_2958.bin");
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MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
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MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
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MODULE_FIRMWARE("atmel_at76c506.bin");
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#define MAX_SSID_LENGTH 32
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#define MGMT_JIFFIES (256 * HZ / 100)
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#define MAX_BSS_ENTRIES 64
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/* registers */
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#define GCR 0x00 /* (SIR0) General Configuration Register */
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#define BSR 0x02 /* (SIR1) Bank Switching Select Register */
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#define AR 0x04
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#define DR 0x08
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#define MR1 0x12 /* Mirror Register 1 */
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#define MR2 0x14 /* Mirror Register 2 */
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#define MR3 0x16 /* Mirror Register 3 */
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#define MR4 0x18 /* Mirror Register 4 */
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#define GPR1 0x0c
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#define GPR2 0x0e
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#define GPR3 0x10
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/*
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* Constants for the GCR register.
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*/
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#define GCR_REMAP 0x0400 /* Remap internal SRAM to 0 */
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#define GCR_SWRES 0x0080 /* BIU reset (ARM and PAI are NOT reset) */
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#define GCR_CORES 0x0060 /* Core Reset (ARM and PAI are reset) */
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#define GCR_ENINT 0x0002 /* Enable Interrupts */
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#define GCR_ACKINT 0x0008 /* Acknowledge Interrupts */
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#define BSS_SRAM 0x0200 /* AMBA module selection --> SRAM */
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#define BSS_IRAM 0x0100 /* AMBA module selection --> IRAM */
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/*
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*Constants for the MR registers.
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*/
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#define MAC_INIT_COMPLETE 0x0001 /* MAC init has been completed */
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#define MAC_BOOT_COMPLETE 0x0010 /* MAC boot has been completed */
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#define MAC_INIT_OK 0x0002 /* MAC boot has been completed */
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#define MIB_MAX_DATA_BYTES 212
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#define MIB_HEADER_SIZE 4 /* first four fields */
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struct get_set_mib {
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u8 type;
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u8 size;
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u8 index;
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u8 reserved;
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u8 data[MIB_MAX_DATA_BYTES];
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};
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struct rx_desc {
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u32 Next;
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u16 MsduPos;
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u16 MsduSize;
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u8 State;
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u8 Status;
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u8 Rate;
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u8 Rssi;
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u8 LinkQuality;
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u8 PreambleType;
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u16 Duration;
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u32 RxTime;
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};
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#define RX_DESC_FLAG_VALID 0x80
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#define RX_DESC_FLAG_CONSUMED 0x40
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#define RX_DESC_FLAG_IDLE 0x00
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#define RX_STATUS_SUCCESS 0x00
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#define RX_DESC_MSDU_POS_OFFSET 4
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#define RX_DESC_MSDU_SIZE_OFFSET 6
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#define RX_DESC_FLAGS_OFFSET 8
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#define RX_DESC_STATUS_OFFSET 9
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#define RX_DESC_RSSI_OFFSET 11
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#define RX_DESC_LINK_QUALITY_OFFSET 12
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#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
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#define RX_DESC_DURATION_OFFSET 14
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#define RX_DESC_RX_TIME_OFFSET 16
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struct tx_desc {
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u32 NextDescriptor;
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u16 TxStartOfFrame;
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u16 TxLength;
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u8 TxState;
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u8 TxStatus;
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u8 RetryCount;
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u8 TxRate;
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u8 KeyIndex;
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u8 ChiperType;
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u8 ChipreLength;
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u8 Reserved1;
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u8 Reserved;
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u8 PacketType;
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u16 HostTxLength;
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};
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#define TX_DESC_NEXT_OFFSET 0
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#define TX_DESC_POS_OFFSET 4
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#define TX_DESC_SIZE_OFFSET 6
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#define TX_DESC_FLAGS_OFFSET 8
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#define TX_DESC_STATUS_OFFSET 9
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#define TX_DESC_RETRY_OFFSET 10
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#define TX_DESC_RATE_OFFSET 11
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#define TX_DESC_KEY_INDEX_OFFSET 12
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#define TX_DESC_CIPHER_TYPE_OFFSET 13
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#define TX_DESC_CIPHER_LENGTH_OFFSET 14
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#define TX_DESC_PACKET_TYPE_OFFSET 17
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#define TX_DESC_HOST_LENGTH_OFFSET 18
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/*
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* Host-MAC interface
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*/
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#define TX_STATUS_SUCCESS 0x00
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#define TX_FIRM_OWN 0x80
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#define TX_DONE 0x40
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#define TX_ERROR 0x01
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#define TX_PACKET_TYPE_DATA 0x01
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#define TX_PACKET_TYPE_MGMT 0x02
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#define ISR_EMPTY 0x00 /* no bits set in ISR */
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#define ISR_TxCOMPLETE 0x01 /* packet transmitted */
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#define ISR_RxCOMPLETE 0x02 /* packet received */
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#define ISR_RxFRAMELOST 0x04 /* Rx Frame lost */
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#define ISR_FATAL_ERROR 0x08 /* Fatal error */
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#define ISR_COMMAND_COMPLETE 0x10 /* command completed */
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#define ISR_OUT_OF_RANGE 0x20 /* command completed */
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#define ISR_IBSS_MERGE 0x40 /* (4.1.2.30): IBSS merge */
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#define ISR_GENERIC_IRQ 0x80
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#define Local_Mib_Type 0x01
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#define Mac_Address_Mib_Type 0x02
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#define Mac_Mib_Type 0x03
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#define Statistics_Mib_Type 0x04
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#define Mac_Mgmt_Mib_Type 0x05
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#define Mac_Wep_Mib_Type 0x06
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#define Phy_Mib_Type 0x07
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#define Multi_Domain_MIB 0x08
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#define MAC_MGMT_MIB_CUR_BSSID_POS 14
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#define MAC_MIB_FRAG_THRESHOLD_POS 8
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#define MAC_MIB_RTS_THRESHOLD_POS 10
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#define MAC_MIB_SHORT_RETRY_POS 16
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#define MAC_MIB_LONG_RETRY_POS 17
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#define MAC_MIB_SHORT_RETRY_LIMIT_POS 16
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#define MAC_MGMT_MIB_BEACON_PER_POS 0
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#define MAC_MGMT_MIB_STATION_ID_POS 6
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#define MAC_MGMT_MIB_CUR_PRIVACY_POS 11
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#define MAC_MGMT_MIB_CUR_BSSID_POS 14
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#define MAC_MGMT_MIB_PS_MODE_POS 53
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#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS 54
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#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
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#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED 57
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#define PHY_MIB_CHANNEL_POS 14
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#define PHY_MIB_RATE_SET_POS 20
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#define PHY_MIB_REG_DOMAIN_POS 26
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#define LOCAL_MIB_AUTO_TX_RATE_POS 3
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#define LOCAL_MIB_SSID_SIZE 5
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#define LOCAL_MIB_TX_PROMISCUOUS_POS 6
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#define LOCAL_MIB_TX_MGMT_RATE_POS 7
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#define LOCAL_MIB_TX_CONTROL_RATE_POS 8
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#define LOCAL_MIB_PREAMBLE_TYPE 9
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#define MAC_ADDR_MIB_MAC_ADDR_POS 0
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#define CMD_Set_MIB_Vars 0x01
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#define CMD_Get_MIB_Vars 0x02
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#define CMD_Scan 0x03
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#define CMD_Join 0x04
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#define CMD_Start 0x05
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#define CMD_EnableRadio 0x06
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#define CMD_DisableRadio 0x07
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#define CMD_SiteSurvey 0x0B
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#define CMD_STATUS_IDLE 0x00
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#define CMD_STATUS_COMPLETE 0x01
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#define CMD_STATUS_UNKNOWN 0x02
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#define CMD_STATUS_INVALID_PARAMETER 0x03
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#define CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
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#define CMD_STATUS_TIME_OUT 0x07
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#define CMD_STATUS_IN_PROGRESS 0x08
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#define CMD_STATUS_REJECTED_RADIO_OFF 0x09
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#define CMD_STATUS_HOST_ERROR 0xFF
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#define CMD_STATUS_BUSY 0xFE
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#define CMD_BLOCK_COMMAND_OFFSET 0
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#define CMD_BLOCK_STATUS_OFFSET 1
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#define CMD_BLOCK_PARAMETERS_OFFSET 4
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#define SCAN_OPTIONS_SITE_SURVEY 0x80
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#define MGMT_FRAME_BODY_OFFSET 24
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#define MAX_AUTHENTICATION_RETRIES 3
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#define MAX_ASSOCIATION_RETRIES 3
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#define AUTHENTICATION_RESPONSE_TIME_OUT 1000
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#define MAX_WIRELESS_BODY 2316 /* mtu is 2312, CRC is 4 */
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#define LOOP_RETRY_LIMIT 500000
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#define ACTIVE_MODE 1
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#define PS_MODE 2
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#define MAX_ENCRYPTION_KEYS 4
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#define MAX_ENCRYPTION_KEY_SIZE 40
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/*
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* 802.11 related definitions
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*/
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/*
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* Regulatory Domains
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*/
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#define REG_DOMAIN_FCC 0x10 /* Channels 1-11 USA */
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#define REG_DOMAIN_DOC 0x20 /* Channel 1-11 Canada */
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#define REG_DOMAIN_ETSI 0x30 /* Channel 1-13 Europe (ex Spain/France) */
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#define REG_DOMAIN_SPAIN 0x31 /* Channel 10-11 Spain */
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#define REG_DOMAIN_FRANCE 0x32 /* Channel 10-13 France */
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#define REG_DOMAIN_MKK 0x40 /* Channel 14 Japan */
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#define REG_DOMAIN_MKK1 0x41 /* Channel 1-14 Japan(MKK1) */
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#define REG_DOMAIN_ISRAEL 0x50 /* Channel 3-9 ISRAEL */
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#define BSS_TYPE_AD_HOC 1
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#define BSS_TYPE_INFRASTRUCTURE 2
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#define SCAN_TYPE_ACTIVE 0
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#define SCAN_TYPE_PASSIVE 1
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#define LONG_PREAMBLE 0
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#define SHORT_PREAMBLE 1
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#define AUTO_PREAMBLE 2
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#define DATA_FRAME_WS_HEADER_SIZE 30
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/* promiscuous mode control */
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#define PROM_MODE_OFF 0x0
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#define PROM_MODE_UNKNOWN 0x1
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#define PROM_MODE_CRC_FAILED 0x2
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#define PROM_MODE_DUPLICATED 0x4
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#define PROM_MODE_MGMT 0x8
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#define PROM_MODE_CTRL 0x10
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#define PROM_MODE_BAD_PROTOCOL 0x20
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#define IFACE_INT_STATUS_OFFSET 0
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#define IFACE_INT_MASK_OFFSET 1
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#define IFACE_LOCKOUT_HOST_OFFSET 2
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#define IFACE_LOCKOUT_MAC_OFFSET 3
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#define IFACE_FUNC_CTRL_OFFSET 28
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#define IFACE_MAC_STAT_OFFSET 30
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#define IFACE_GENERIC_INT_TYPE_OFFSET 32
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#define CIPHER_SUITE_NONE 0
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#define CIPHER_SUITE_WEP_64 1
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#define CIPHER_SUITE_TKIP 2
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#define CIPHER_SUITE_AES 3
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#define CIPHER_SUITE_CCX 4
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#define CIPHER_SUITE_WEP_128 5
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/*
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* IFACE MACROS & definitions
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*/
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/*
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* FuncCtrl field:
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*/
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#define FUNC_CTRL_TxENABLE 0x10
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#define FUNC_CTRL_RxENABLE 0x20
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#define FUNC_CTRL_INIT_COMPLETE 0x01
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/* A stub firmware image which reads the MAC address from NVRAM on the card.
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For copyright information and source see the end of this file. */
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static u8 mac_reader[] = {
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0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
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0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
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0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
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0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
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0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
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0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
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0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
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0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
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0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
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0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
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0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
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0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
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0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
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0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
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0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
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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;
|
|
unsigned long 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(struct timer_list *t);
|
|
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);
|
|
skb_put_data(skb, 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;
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
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_type = fw_type;
|
|
if (firmware) /* module parameter */
|
|
strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id));
|
|
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;
|
|
|
|
timer_setup(&priv->management_timer, atmel_management_timer, 0);
|
|
spin_lock_init(&priv->irqlock);
|
|
spin_lock_init(&priv->timerlock);
|
|
|
|
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_single_data("driver/atmel", 0, NULL, atmel_proc_show,
|
|
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;
|
|
}
|
|
|
|
new_firmware = memdup_user(com.data, com.len);
|
|
if (IS_ERR(new_firmware)) {
|
|
rc = PTR_ERR(new_firmware);
|
|
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(struct timer_list *t)
|
|
{
|
|
struct atmel_private *priv = from_timer(priv, t, management_timer);
|
|
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);
|
|
msleep(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, infrastructure 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
|