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
10 #include "../include/can.h"
11 #include "../include/can_sysdep.h"
12 #include "../include/main.h"
13 #include "../include/ioctl.h"
14 #include "../include/i82527.h"
16 int can_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
19 unsigned short channel=0;
20 unsigned btr0=0, btr1=0;
21 struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
24 struct canque_ends_t *qends;
26 if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
27 CANMSG("can_ioctl: bad canuser magic\n");
31 obj = canuser->msgobj;
33 CANMSG("Could not assign buffer structure\n");
37 qends = canuser->qends;
40 CANMSG("Device is not correctly configured.\n");
41 CANMSG("Please reload the driver.\n");
47 for (i=0x0; i<0x100; i++)
48 CANMSG("0x%x is 0x%x\n",i,can_read_reg(chip,i));
52 if (chip->chipspecops->start_chip(chip))
57 if (chip->chipspecops->stop_chip(chip))
62 canque_flush(canuser->rx_edge0);
67 if (!strcmp(chip->chip_type,"i82527")) {
69 unsigned char id1, id0;
70 id1 = (unsigned char) (arg << 5);
71 id0 = (unsigned char) (arg >> 3);
73 DEBUGMSG("configuring ID=%lx in message object:"
74 " %02x, %02x\n", arg, id0, id1);
75 can_write_reg(chip,id1,MSG_OFFSET(obj->object) +
77 can_write_reg(chip,id0,MSG_OFFSET(obj->object) +
82 /* In- and output buffer re-initialization */
84 if(canuser->rx_edge0){
85 canque_set_filt(canuser->rx_edge0, arg, ~0, 0);
92 struct canfilt_t canfilt;
93 copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
94 if(canuser->rx_edge0){
95 canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask, canfilt.flags);
101 channel = arg & 0xff;
102 btr0 = (arg >> 8) & 0xff;
103 btr1 = (arg >> 16) & 0xff;
105 if (chip->chipspecops->set_btregs(chip, btr0, btr1)) {
106 CANMSG("Error setting bit timing registers\n");
112 CANMSG("Not a valid ioctl command\n");