--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/can_lincan/canmsg.h	Wed Apr 04 13:04:31 2007 +0200
@@ -0,0 +1,136 @@
+/* canmsg.h - common kernel-space and user-space CAN message structure
+ * Linux CAN-bus device driver.
+ * Written by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
+ * This software is released under the GPL-License.
+ * Version lincan-0.3  17 Jun 2004
+ */
+
+#ifndef _CANMSG_T_H
+#define _CANMSG_T_H
+
+#ifdef __KERNEL__
+
+#include <linux/time.h>
+#include <linux/types.h>
+
+#else /* __KERNEL__ */
+
+#include <sys/time.h>
+#include <sys/types.h>
+
+#endif /* __KERNEL__ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * CAN_MSG_VERSION_2 enables new canmsg_t layout compatible with
+ * can4linux project from http://www.port.de/
+ *
+ */
+#define CAN_MSG_VERSION_2
+
+/* Number of data bytes in one CAN message */
+#define CAN_MSG_LENGTH 8
+
+#ifdef CAN_MSG_VERSION_2
+
+typedef struct timeval canmsg_tstamp_t ;
+
+typedef unsigned long canmsg_id_t;
+
+/**
+ * struct canmsg_t - structure representing CAN message
+ * @flags:  message flags
+ *      %MSG_RTR .. message is Remote Transmission Request,
+ *	%MSG_EXT .. message with extended ID,
+ *      %MSG_OVR .. indication of queue overflow condition,
+ *	%MSG_LOCAL .. message originates from this node.
+ * @cob:    communication object number (not used)
+ * @id:     ID of CAN message
+ * @timestamp: not used
+ * @length: length of used data
+ * @data:   data bytes buffer
+ *
+ * Header: canmsg.h
+ */
+struct canmsg_t {
+	int             flags;
+	int             cob;
+	canmsg_id_t     id;
+	canmsg_tstamp_t timestamp;
+	unsigned short  length;
+	unsigned char   data[CAN_MSG_LENGTH];
+};
+
+#else /*CAN_MSG_VERSION_2*/
+#ifndef PACKED
+#define PACKED __attribute__((packed))
+#endif
+/* Old, deprecated version of canmsg_t structure */
+struct canmsg_t {
+	short		flags;
+	int		cob;
+	canmsg_id_t	id;
+	unsigned long	timestamp;
+	unsigned int	length;
+	unsigned char	data[CAN_MSG_LENGTH];
+} PACKED;
+#endif /*CAN_MSG_VERSION_2*/
+
+typedef struct canmsg_t canmsg_t;
+
+/**
+ * struct canfilt_t - structure for acceptance filter setup
+ * @flags:  message flags
+ *      %MSG_RTR .. message is Remote Transmission Request,
+ *	%MSG_EXT .. message with extended ID,
+ *      %MSG_OVR .. indication of queue overflow condition,
+ *	%MSG_LOCAL .. message originates from this node.
+ *	there are corresponding mask bits
+ *	%MSG_RTR_MASK, %MSG_EXT_MASK, %MSG_LOCAL_MASK.
+ *	%MSG_PROCESSLOCAL enables local messages processing in the
+ *	combination with global setting
+ * @queid:  CAN queue identification in the case of the multiple
+ *	    queues per one user (open instance)
+ * @cob:    communication object number (not used)
+ * @id:     selected required value of cared ID id bits
+ * @mask:   select bits significand for the comparation;
+ *          1 .. take care about corresponding ID bit, 0 .. don't care
+ *
+ * Header: canmsg.h
+ */
+struct canfilt_t {
+	int		flags;
+	int		queid;
+	int		cob;
+	canmsg_id_t	id;
+	canmsg_id_t	mask;
+};
+
+typedef struct canfilt_t canfilt_t;
+
+/* Definitions to use for canmsg_t and canfilt_t flags */
+#define MSG_RTR   (1<<0)
+#define MSG_OVR   (1<<1)
+#define MSG_EXT   (1<<2)
+#define MSG_LOCAL (1<<3)
+/* If you change above lines, check canque_filtid2internal function */
+
+/* Additional definitions used for canfilt_t only */
+#define MSG_FILT_MASK_SHIFT   8
+#define MSG_RTR_MASK   (MSG_RTR<<MSG_FILT_MASK_SHIFT)
+#define MSG_EXT_MASK   (MSG_EXT<<MSG_FILT_MASK_SHIFT)
+#define MSG_LOCAL_MASK (MSG_LOCAL<<MSG_FILT_MASK_SHIFT)
+#define MSG_PROCESSLOCAL (MSG_OVR<<MSG_FILT_MASK_SHIFT)
+
+/* Can message ID mask */
+#define MSG_ID_MASK ((1l<<29)-1)
+
+#ifdef __cplusplus
+} /* extern "C"*/
+#endif
+
+#endif /*_CANMSG_T_H*/