1 /* can.h |
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2 * Header file for the Linux CAN-bus driver. |
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3 * Written by Arnaud Westenberg email:arnaud@wanadoo.nl |
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4 * Rewritten for new CAN queues by Pavel Pisa - OCERA team member |
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5 * email:pisa@cmp.felk.cvut.cz |
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6 * This software is released under the GPL-License. |
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7 * Version lincan-0.3 17 Jun 2004 |
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8 */ |
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9 |
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10 #ifndef _CAN_DRVAPI_T_H |
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11 #define _CAN_DRVAPI_T_H |
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12 |
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13 #ifdef __KERNEL__ |
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14 |
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15 #include <linux/time.h> |
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16 #include <linux/types.h> |
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17 #include <linux/ioctl.h> |
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18 |
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19 #else /* __KERNEL__ */ |
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20 |
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21 #include <sys/time.h> |
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22 #include <sys/types.h> |
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23 #include <sys/ioctl.h> |
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24 |
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25 #endif /* __KERNEL__ */ |
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26 |
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27 #include "./canmsg.h" |
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28 |
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29 #ifdef __cplusplus |
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30 extern "C" { |
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31 #endif |
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32 |
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33 /* CAN ioctl magic number */ |
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34 #define CAN_IOC_MAGIC 'd' |
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35 |
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36 typedef unsigned long bittiming_t; |
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37 typedef unsigned short channel_t; |
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38 |
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39 /** |
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40 * struct can_baudparams_t - datatype for calling CONF_BAUDPARAMS IOCTL |
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41 * @flags: reserved for additional flags for chip configuration, should be written -1 or 0 |
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42 * @baudrate: baud rate in Hz |
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43 * @sjw: synchronization jump width (0-3) prescaled clock cycles |
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44 * @sampl_pt: sample point in % (0-100) sets (TSEG1+1)/(TSEG1+TSEG2+2) ratio |
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45 * |
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46 * The structure is used to configure new set of parameters into CAN controller chip. |
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47 * If default value of some field should be preserved, fill field by value -1. |
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48 */ |
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49 struct can_baudparams_t { |
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50 long flags; |
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51 long baudrate; |
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52 long sjw; |
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53 long sample_pt; |
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54 }; |
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55 |
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56 /* CAN ioctl functions */ |
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57 #define CAN_DRV_QUERY _IO(CAN_IOC_MAGIC, 0) |
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58 #define CAN_DRV_QRY_BRANCH 0 /* returns driver branch value - "LINC" for LinCAN driver */ |
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59 #define CAN_DRV_QRY_VERSION 1 /* returns driver version as (major<<16) | (minor<<8) | patch */ |
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60 #define CAN_DRV_QRY_MSGFORMAT 2 /* format of canmsg_t structure */ |
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61 |
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62 #define CMD_START _IOW(CAN_IOC_MAGIC, 1, channel_t) |
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63 #define CMD_STOP _IOW(CAN_IOC_MAGIC, 2, channel_t) |
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64 //#define CMD_RESET 3 |
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65 |
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66 #define CONF_BAUD _IOW(CAN_IOC_MAGIC, 4, bittiming_t) |
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67 //#define CONF_ACCM |
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68 //#define CONF_XTDACCM |
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69 //#define CONF_TIMING |
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70 //#define CONF_OMODE |
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71 #define CONF_FILTER _IOW(CAN_IOC_MAGIC, 8, unsigned char) |
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72 |
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73 //#define CONF_FENABLE |
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74 //#define CONF_FDISABLE |
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75 |
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76 #define STAT _IO(CAN_IOC_MAGIC, 9) |
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77 #define CANQUE_FILTER _IOW(CAN_IOC_MAGIC, 10, struct canfilt_t) |
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78 #define CANQUE_FLUSH _IO(CAN_IOC_MAGIC, 11) |
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79 #define CONF_BAUDPARAMS _IOW(CAN_IOC_MAGIC, 11, struct can_baudparams_t) |
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80 #define CANRTR_READ _IOWR(CAN_IOC_MAGIC, 12, struct canmsg_t) |
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81 |
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82 #ifdef __cplusplus |
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83 } /* extern "C"*/ |
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84 #endif |
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85 |
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86 #endif /*_CAN_DRVAPI_T_H*/ |
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