-/* ioctl.c
- * Linux CAN-bus device driver.
- * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
- * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
- * email:pisa@cmp.felk.cvut.cz
- * This software is released under the GPL-License.
- * Version lincan-0.2 9 Jul 2003
- */
-
-#include <linux/autoconf.h>
-
-#include <linux/fs.h>
-#include <linux/version.h>
-#include <linux/string.h>
-#include <asm/uaccess.h>
+/**************************************************************************/
+/* File: ioctl.c - CAN driver IOCTL functions support */
+/* */
+/* LinCAN - (Not only) Linux CAN bus driver */
+/* Copyright (C) 2002-2009 DCE FEE CTU Prague <http://dce.felk.cvut.cz> */
+/* Copyright (C) 2002-2009 Pavel Pisa <pisa@cmp.felk.cvut.cz> */
+/* Funded by OCERA and FRESCOR IST projects */
+/* Based on CAN driver code by Arnaud Westenberg <arnaud@wanadoo.nl> */
+/* */
+/* LinCAN is free software; you can redistribute it and/or modify it */
+/* under terms of the GNU General Public License as published by the */
+/* Free Software Foundation; either version 2, or (at your option) any */
+/* later version. LinCAN is distributed in the hope that it will be */
+/* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */
+/* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
+/* General Public License for more details. You should have received a */
+/* copy of the GNU General Public License along with LinCAN; see file */
+/* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
+/* Cambridge, MA 02139, USA. */
+/* */
+/* To allow use of LinCAN in the compact embedded systems firmware */
+/* and RT-executives (RTEMS for example), main authors agree with next */
+/* special exception: */
+/* */
+/* Including LinCAN header files in a file, instantiating LinCAN generics */
+/* or templates, or linking other files with LinCAN objects to produce */
+/* an application image/executable, does not by itself cause the */
+/* resulting application image/executable to be covered by */
+/* the GNU General Public License. */
+/* This exception does not however invalidate any other reasons */
+/* why the executable file might be covered by the GNU Public License. */
+/* Publication of enhanced or derived LinCAN files is required although. */
+/**************************************************************************/
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/ioctl.h"
-#include "../include/i82527.h"
int can_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
unsigned btr0=0, btr1=0;
struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
struct msgobj_t *obj;
- struct chip_t *chip;
+ struct canchip_t *chip;
struct canque_ends_t *qends;
if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
- CANMSG("can_close: bad canuser magic\n");
+ CANMSG("can_ioctl: bad canuser magic\n");
return -ENODEV;
}
}
switch (cmd) {
+ case CAN_DRV_QUERY: {
+ return can_ioctl_query(canuser, arg);
+ }
case STAT: {
for (i=0x0; i<0x100; i++)
CANMSG("0x%x is 0x%x\n",i,can_read_reg(chip,i));
break;
}
case CONF_FILTER: {
- #if 0
- if (!strcmp(chip->chip_type,"i82527")) {
-
- unsigned char id1, id0;
- id1 = (unsigned char) (arg << 5);
- id0 = (unsigned char) (arg >> 3);
-
- DEBUGMSG("configuring ID=%lx in message object:"
- " %02x, %02x\n", arg, id0, id1);
- can_write_reg(chip,id1,MSG_OFFSET(obj->object) +
- iMSGID1);
- can_write_reg(chip,id0,MSG_OFFSET(obj->object) +
- iMSGID0);
- }
- #endif
/* In- and output buffer re-initialization */
case CANQUE_FILTER: {
struct canfilt_t canfilt;
- copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
+ int ret;
+ ret = copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
+ if(ret) return -EFAULT;
if(canuser->rx_edge0){
canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask, canfilt.flags);
}
break;
}
+
+ case CANRTR_READ: {
+ int ret;
+ struct canmsg_t rtr_msg;
+
+ ret = copy_from_user(&rtr_msg, (void*)arg, sizeof(struct canmsg_t));
+ if(ret) return -EFAULT;
+ ret = can_ioctl_remote_read(canuser, &rtr_msg, rtr_msg.id, 0);
+ if(ret<0) return ret;
+ ret = copy_to_user((void*)arg, &rtr_msg, sizeof(struct canmsg_t));
+ if(ret) return -EFAULT;
+ break;
+ }
case CONF_BAUD: {
channel = arg & 0xff;
}
break;
}
+
+ case CONF_BAUDPARAMS: {
+ struct can_baudparams_t params;
+ int ret;
+
+ ret = copy_from_user(¶ms, (void*)arg, sizeof(struct can_baudparams_t));
+ if(ret) return -EFAULT;
+
+ if(params.flags == -1) params.flags = 0;
+ if(params.baudrate == -1) params.baudrate = chip->baudrate;
+ if(params.sjw == -1) params.sjw = 0;
+ if(params.sample_pt == -1) params.sample_pt = 75;
+ i=chip->chipspecops->baud_rate(chip, params.baudrate, chip->clock, params.sjw,
+ params.sample_pt, params.flags);
+ if(i>=0) chip->baudrate = params.baudrate;
+ else {
+ CANMSG("Error setting baud parameters\n");
+ return -1;
+ }
+ break;
+ }
+
+
default: {
CANMSG("Not a valid ioctl command\n");
return -EINVAL;
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