lincan/src/ioctl_rtl.c

   1 /* ioctl.c
   2  * Linux CAN-bus device driver.
   3  * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
   4  * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
   5  * email:pisa@cmp.felk.cvut.cz
   6  * This software is released under the GPL-License.
   7  * Version lincan-0.2  9 Jul 2003
   8  */
   9
  10 #ifdef CAN_WITH_RTL
  11
  12 #include "../include/can.h"
  13 #include "../include/can_sysdep.h"
  14 #include "../include/main.h"
  15
  16 #include <rtl_posixio.h>
  17 #include "../include/can_iortl.h"
  18
  19
  20 int can_ioctl_rtl_posix(struct rtl_file *fptr, unsigned int cmd, unsigned long arg)
  21 {
  22         struct canuser_t *canuser =
  23                 (struct canuser_t *)can_get_rtl_file_private_data(fptr);
  24         int i=0;
  25         unsigned short channel=0;
  26         unsigned btr0=0, btr1=0;
  27         struct msgobj_t *obj;
  28         struct chip_t *chip;
  29         struct canque_ends_t *qends;
  30
  31         if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
  32                 CANMSG("can_ioctl_: bad canuser magic\n");
  33                 return -ENODEV;
  34         }
  35
  36         obj = canuser->msgobj;
  37         if (obj == NULL) {
  38                 CANMSG("Could not assign buffer structure\n");
  39                 return -1;
  40         }
  41
  42         qends = canuser->qends;
  43         chip = obj->hostchip;
  44         if (chip == NULL) {
  45                 CANMSG("Device is not correctly configured.\n");
  46                 CANMSG("Please reload the driver.\n");
  47                 return -1;
  48         }
  49
  50         switch (cmd) {
  51                 case STAT: {
  52                         for (i=0x0; i<0x100; i++)
  53                                 CANMSG("0x%x is 0x%x\n",i,can_read_reg(chip,i));
  54                         break;
  55                 }
  56                 case CMD_START: {
  57                         if (chip->chipspecops->start_chip(chip))
  58                                 return -1;
  59                         break;
  60                 }
  61                 case CMD_STOP: {
  62                         if (chip->chipspecops->stop_chip(chip))
  63                                 return -1;
  64                         break;
  65                 }
  66                 case CANQUE_FLUSH: {
  67                         canque_flush(canuser->rx_edge0);
  68                         break;
  69                 }
  70                 case CONF_FILTER: {
  71                         if(canuser->rx_edge0){
  72                                 canque_set_filt(canuser->rx_edge0, arg, ~0, 0);
  73                         }
  74
  75                         break;
  76                 }
  77
  78                 case CANQUE_FILTER: {
  79                         struct canfilt_t canfilt=*(struct canfilt_t *)arg;
  80                         if(canuser->rx_edge0){
  81                                 canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask, canfilt.flags);
  82                         }
  83                         break;
  84                 }
  85
  86                 case CONF_BAUD: {
  87                         channel = arg & 0xff;
  88                         btr0 = (arg >> 8) & 0xff;
  89                         btr1 = (arg >> 16) & 0xff;
  90
  91                         if (chip->chipspecops->set_btregs(chip, btr0, btr1)) {
  92                                 CANMSG("Error setting bit timing registers\n");
  93                                 return -1;
  94                         }
  95                         break;
  96                 }
  97                 default: {
  98                         CANMSG("Not a valid ioctl command\n");
  99                         return -EINVAL;
 100                 }
 101
 102         }
 103
 104         return 0;
 105 }
 106
 107 #endif /*CAN_WITH_RTL*/