diff options
Diffstat (limited to 'include/linux/can')
| -rw-r--r-- | include/linux/can/Kbuild | 3 | ||||
| -rw-r--r-- | include/linux/can/bcm.h | 65 | ||||
| -rw-r--r-- | include/linux/can/core.h | 64 | ||||
| -rw-r--r-- | include/linux/can/error.h | 93 | ||||
| -rw-r--r-- | include/linux/can/raw.h | 31 |
5 files changed, 256 insertions, 0 deletions
diff --git a/include/linux/can/Kbuild b/include/linux/can/Kbuild new file mode 100644 index 00000000000..eff898aac02 --- /dev/null +++ b/include/linux/can/Kbuild @@ -0,0 +1,3 @@ +header-y += raw.h +header-y += bcm.h +header-y += error.h diff --git a/include/linux/can/bcm.h b/include/linux/can/bcm.h new file mode 100644 index 00000000000..7f293273c44 --- /dev/null +++ b/include/linux/can/bcm.h @@ -0,0 +1,65 @@ +/* + * linux/can/bcm.h + * + * Definitions for CAN Broadcast Manager (BCM) + * + * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> + * Copyright (c) 2002-2007 Volkswagen Group Electronic Research + * All rights reserved. + * + * Send feedback to <socketcan-users@lists.berlios.de> + * + */ + +#ifndef CAN_BCM_H +#define CAN_BCM_H + +/** + * struct bcm_msg_head - head of messages to/from the broadcast manager + * @opcode: opcode, see enum below. + * @flags: special flags, see below. + * @count: number of frames to send before changing interval. + * @ival1: interval for the first @count frames. + * @ival2: interval for the following frames. + * @can_id: CAN ID of frames to be sent or received. + * @nframes: number of frames appended to the message head. + * @frames: array of CAN frames. + */ +struct bcm_msg_head { + __u32 opcode; + __u32 flags; + __u32 count; + struct timeval ival1, ival2; + canid_t can_id; + __u32 nframes; + struct can_frame frames[0]; +}; + +enum { + TX_SETUP = 1, /* create (cyclic) transmission task */ + TX_DELETE, /* remove (cyclic) transmission task */ + TX_READ, /* read properties of (cyclic) transmission task */ + TX_SEND, /* send one CAN frame */ + RX_SETUP, /* create RX content filter subscription */ + RX_DELETE, /* remove RX content filter subscription */ + RX_READ, /* read properties of RX content filter subscription */ + TX_STATUS, /* reply to TX_READ request */ + TX_EXPIRED, /* notification on performed transmissions (count=0) */ + RX_STATUS, /* reply to RX_READ request */ + RX_TIMEOUT, /* cyclic message is absent */ + RX_CHANGED /* updated CAN frame (detected content change) */ +}; + +#define SETTIMER 0x0001 +#define STARTTIMER 0x0002 +#define TX_COUNTEVT 0x0004 +#define TX_ANNOUNCE 0x0008 +#define TX_CP_CAN_ID 0x0010 +#define RX_FILTER_ID 0x0020 +#define RX_CHECK_DLC 0x0040 +#define RX_NO_AUTOTIMER 0x0080 +#define RX_ANNOUNCE_RESUME 0x0100 +#define TX_RESET_MULTI_IDX 0x0200 +#define RX_RTR_FRAME 0x0400 + +#endif /* CAN_BCM_H */ diff --git a/include/linux/can/core.h b/include/linux/can/core.h new file mode 100644 index 00000000000..e9ca210ffa5 --- /dev/null +++ b/include/linux/can/core.h @@ -0,0 +1,64 @@ +/* + * linux/can/core.h + * + * Protoypes and definitions for CAN protocol modules using the PF_CAN core + * + * Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> + * Urs Thuermann <urs.thuermann@volkswagen.de> + * Copyright (c) 2002-2007 Volkswagen Group Electronic Research + * All rights reserved. + * + * Send feedback to <socketcan-users@lists.berlios.de> + * + */ + +#ifndef CAN_CORE_H +#define CAN_CORE_H + +#include <linux/can.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +#define CAN_VERSION "20071116" + +/* increment this number each time you change some user-space interface */ +#define CAN_ABI_VERSION "8" + +#define CAN_VERSION_STRING "rev " CAN_VERSION " abi " CAN_ABI_VERSION + +#define DNAME(dev) ((dev) ? (dev)->name : "any") + +/** + * struct can_proto - CAN protocol structure + * @type: type argument in socket() syscall, e.g. SOCK_DGRAM. + * @protocol: protocol number in socket() syscall. + * @capability: capability needed to open the socket, or -1 for no restriction. + * @ops: pointer to struct proto_ops for sock->ops. + * @prot: pointer to struct proto structure. + */ +struct can_proto { + int type; + int protocol; + int capability; + struct proto_ops *ops; + struct proto *prot; +}; + +/* function prototypes for the CAN networklayer core (af_can.c) */ + +extern int can_proto_register(struct can_proto *cp); +extern void can_proto_unregister(struct can_proto *cp); + +extern int can_rx_register(struct net_device *dev, canid_t can_id, + canid_t mask, + void (*func)(struct sk_buff *, void *), + void *data, char *ident); + +extern void can_rx_unregister(struct net_device *dev, canid_t can_id, + canid_t mask, + void (*func)(struct sk_buff *, void *), + void *data); + +extern int can_send(struct sk_buff *skb, int loop); + +#endif /* CAN_CORE_H */ diff --git a/include/linux/can/error.h b/include/linux/can/error.h new file mode 100644 index 00000000000..d4127fd9e68 --- /dev/null +++ b/include/linux/can/error.h @@ -0,0 +1,93 @@ +/* + * linux/can/error.h + * + * Definitions of the CAN error frame to be filtered and passed to the user. + * + * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> + * Copyright (c) 2002-2007 Volkswagen Group Electronic Research + * All rights reserved. + * + * Send feedback to <socketcan-users@lists.berlios.de> + * + */ + +#ifndef CAN_ERROR_H +#define CAN_ERROR_H + +#define CAN_ERR_DLC 8 /* dlc for error frames */ + +/* error class (mask) in can_id */ +#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */ +#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */ +#define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */ +#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */ +#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */ +#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */ +#define CAN_ERR_BUSOFF 0x00000040U /* bus off */ +#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */ +#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */ + +/* arbitration lost in bit ... / data[0] */ +#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */ + /* else bit number in bitstream */ + +/* error status of CAN-controller / data[1] */ +#define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */ +#define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */ +#define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */ +#define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */ +#define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */ +#define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */ +#define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */ + /* (at least one error counter exceeds */ + /* the protocol-defined level of 127) */ + +/* error in CAN protocol (type) / data[2] */ +#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */ +#define CAN_ERR_PROT_BIT 0x01 /* single bit error */ +#define CAN_ERR_PROT_FORM 0x02 /* frame format error */ +#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */ +#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */ +#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */ +#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */ +#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */ +#define CAN_ERR_PROT_TX 0x80 /* error occured on transmission */ + +/* error in CAN protocol (location) / data[3] */ +#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */ +#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */ +#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */ +#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/ +#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */ +#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */ +#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */ +#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */ +#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */ +#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */ +#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */ +#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */ +#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */ +#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */ +#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */ +#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */ +#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */ +#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */ +#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */ +#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */ + +/* error status of CAN-transceiver / data[4] */ +/* CANH CANL */ +#define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */ +#define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */ +#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */ +#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */ +#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */ +#define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */ +#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */ +#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */ +#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */ +#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */ + +/* controller specific additional information / data[5..7] */ + +#endif /* CAN_ERROR_H */ diff --git a/include/linux/can/raw.h b/include/linux/can/raw.h new file mode 100644 index 00000000000..b2a0f87492c --- /dev/null +++ b/include/linux/can/raw.h @@ -0,0 +1,31 @@ +/* + * linux/can/raw.h + * + * Definitions for raw CAN sockets + * + * Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> + * Urs Thuermann <urs.thuermann@volkswagen.de> + * Copyright (c) 2002-2007 Volkswagen Group Electronic Research + * All rights reserved. + * + * Send feedback to <socketcan-users@lists.berlios.de> + * + */ + +#ifndef CAN_RAW_H +#define CAN_RAW_H + +#include <linux/can.h> + +#define SOL_CAN_RAW (SOL_CAN_BASE + CAN_RAW) + +/* for socket options affecting the socket (not the global system) */ + +enum { + CAN_RAW_FILTER = 1, /* set 0 .. n can_filter(s) */ + CAN_RAW_ERR_FILTER, /* set filter for error frames */ + CAN_RAW_LOOPBACK, /* local loopback (default:on) */ + CAN_RAW_RECV_OWN_MSGS /* receive my own msgs (default:off) */ +}; + +#endif |