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 <linux/autoconf.h>
13 #include <linux/version.h>
14 #include <linux/string.h>
15 #include <asm/uaccess.h>
17 #include "../include/main.h"
18 #include "../include/ioctl.h"
19 #include "../include/i82527.h"
21 int can_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
24 unsigned short channel=0;
25 unsigned btr0=0, btr1=0;
26 struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
29 struct canque_ends_t *qends;
31 if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
32 CANMSG("can_close: bad canuser magic\n");
36 obj = canuser->msgobj;
38 CANMSG("Could not assign buffer structure\n");
42 qends = canuser->qends;
45 CANMSG("Device is not correctly configured.\n");
46 CANMSG("Please reload the driver.\n");
52 for (i=0x0; i<0x100; i++)
53 CANMSG("0x%x is 0x%x\n",i,can_read_reg(chip,i));
57 if (chip->chipspecops->start_chip(chip))
62 if (chip->chipspecops->stop_chip(chip))
68 if (!strcmp(chip->chip_type,"i82527")) {
70 unsigned char id1, id0;
71 id1 = (unsigned char) (arg << 5);
72 id0 = (unsigned char) (arg >> 3);
74 DEBUGMSG("configuring ID=%lx in message object:"
75 " %02x, %02x\n", arg, id0, id1);
76 can_write_reg(chip,id1,MSG_OFFSET(obj->object) +
78 can_write_reg(chip,id0,MSG_OFFSET(obj->object) +
83 /* In- and output buffer re-initialization */
85 if(canuser->rx_edge0){
86 canque_set_filt(canuser->rx_edge0, arg, ~0);
87 canque_flush(canuser->rx_edge0);
93 case CONF_FILTER_QUE0: {
94 struct canfilt_t canfilt;
95 copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
96 if(canuser->rx_edge0){
97 canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask);
98 canque_flush(canuser->rx_edge0);
104 channel = arg & 0xff;
105 btr0 = (arg >> 8) & 0xff;
106 btr1 = (arg >> 16) & 0xff;
108 if (chip->chipspecops->set_btregs(chip, btr0, btr1)) {
109 CANMSG("Error setting bit timing registers\n");
115 CANMSG("Not a valid ioctl command\n");