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/*
* sja1000.h - Philips SJA1000 network device driver
*
* Copyright (c) 2003 Matthias Brukner, Trajet Gmbh, Rebenring 33,
* 38106 Braunschweig, GERMANY
*
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* Send feedback to <socketcan-users@lists.berlios.de>
*
*/
#ifndef SJA1000_H
#define SJA1000_H
#define SJA1000_IO_SIZE_BASIC 0x20
#define SJA1000_IO_SIZE_PELICAN 0x80 /* unused */
#define CHIP_NAME "sja1000"
#define DRV_NAME_LEN 30 /* for "<chip_name>-<hal_name>" */
#define PROCBASE "driver" /* /proc/ ... */
#define DEFAULT_HW_CLK 16000000
#define DEFAULT_SPEED 500 /* kBit/s */
#define CAN_NETDEV_NAME "can%d"
#define TX_TIMEOUT (50*HZ/1000) /* 50ms */
#define RESTART_MS 100 /* restart chip on persistent errors in 100ms */
#define MAX_BUS_ERRORS 200 /* prevent from flooding bus error interrupts */
/* SJA1000 registers - manual section 6.4 (Pelican Mode) */
#define REG_MOD 0x00
#define REG_CMR 0x01
#define REG_SR 0x02
#define REG_IR 0x03
#define REG_IER 0x04
#define REG_ALC 0x0B
#define REG_ECC 0x0C
#define REG_EWL 0x0D
#define REG_RXERR 0x0E
#define REG_TXERR 0x0F
#define REG_ACCC0 0x10
#define REG_ACCC1 0x11
#define REG_ACCC2 0x12
#define REG_ACCC3 0x13
#define REG_ACCM0 0x14
#define REG_ACCM1 0x15
#define REG_ACCM2 0x16
#define REG_ACCM3 0x17
#define REG_RMC 0x1D
#define REG_RBSA 0x1E
/* Common registers - manual section 6.5 */
#define REG_BTR0 0x06
#define REG_BTR1 0x07
#define REG_OCR 0x08
#define REG_CDR 0x1F
#define REG_FI 0x10
#define SFF_BUF 0x13
#define EFF_BUF 0x15
#define FI_FF 0x80
#define FI_RTR 0x40
#define REG_ID1 0x11
#define REG_ID2 0x12
#define REG_ID3 0x13
#define REG_ID4 0x14
#define CAN_RAM 0x20
/* mode register */
#define MOD_RM 0x01
#define MOD_LOM 0x02
#define MOD_STM 0x04
#define MOD_AFM 0x08
#define MOD_SM 0x10
/* commands */
#define CMD_SRR 0x10
#define CMD_CDO 0x08
#define CMD_RRB 0x04
#define CMD_AT 0x02
#define CMD_TR 0x01
/* interrupt sources */
#define IRQ_BEI 0x80
#define IRQ_ALI 0x40
#define IRQ_EPI 0x20
#define IRQ_WUI 0x10
#define IRQ_DOI 0x08
#define IRQ_EI 0x04
#define IRQ_TI 0x02
#define IRQ_RI 0x01
#define IRQ_ALL 0xFF
#define IRQ_OFF 0x00
/* status register content */
#define SR_BS 0x80
#define SR_ES 0x40
#define SR_TS 0x20
#define SR_RS 0x10
#define SR_TCS 0x08
#define SR_TBS 0x04
#define SR_DOS 0x02
#define SR_RBS 0x01
#define SR_CRIT (SR_BS|SR_ES)
/* ECC register */
#define ECC_DIR 0x20
#define ECC_SEG 0x1F
#define ECC_ERR 6
/* bus timing */
#define MAX_TSEG1 15
#define MAX_TSEG2 7
#define SAMPLE_POINT 75
#define JUMPWIDTH 0x40
/* CAN private data structure */
struct can_priv {
struct can_device_stats can_stats;
long open_time;
int clock;
int hw_regs;
int restart_ms;
int debug;
int speed;
int btr;
int rx_probe;
struct timer_list timer;
int state;
struct sk_buff *echo_skb;
};
#define STATE_UNINITIALIZED 0
#define STATE_PROBE 1
#define STATE_ACTIVE 2
#define STATE_ERROR_ACTIVE 3
#define STATE_ERROR_PASSIVE 4
#define STATE_BUS_OFF 5
#define STATE_RESET_MODE 6
void can_proc_create(const char *drv_name);
void can_proc_remove(const char *drv_name);
#endif /* SJA1000_H */
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