-/* open.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-0.3 17 Jun 2004
- */
+/**************************************************************************/
+/* File: open_rtl.c - RT-Linux open systemcall variant */
+/* */
+/* 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. */
+/**************************************************************************/
#ifdef CAN_WITH_RTL
can_spin_irqflags_t iflags;
if(!obj) return -ENODEV;
-
+
can_msgobj_set_fl(obj,OPENED);
-
+
chip=obj->hostchip;
if (chip) {
if (!(chip->flags & CHIP_CONFIGURED)) {
if (chip->chipspecops->chip_config(chip))
CANMSG("Error configuring chip.\n");
else
- chip->flags |= CHIP_CONFIGURED;
+ chip->flags |= CHIP_CONFIGURED;
if (chip->chipspecops->pre_read_config(chip,obj)<0)
CANMSG("Error initializing chip for receiving\n");
/* mark memory as allocated from RTL memory pool */
qends->ends_flags|=CAN_ENDSF_MEM_RTL;
canuser->qends = qends;
-
+
can_spin_lock_irqsave(&canuser_manipulation_lock, iflags);
list_add(&canuser->peers, &obj->obj_users);
can_spin_unlock_irqrestore(&canuser_manipulation_lock, iflags);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,50))
MOD_INC_USE_COUNT; /*is this enough for RT-Linux context ?*/
-#endif
+#endif
return 0;
-
+
no_rx_qedge:
canque_notify_bothends(edge, CANQUEUE_NOTIFY_DEAD_WANTED);
canque_edge_decref(edge);
struct canchip_t *chip;
struct canuser_t *canuser;
int minor_nr = RTL_MINOR_FROM_FILEPTR(fptr);
-
+
if(minor_nr>=MAX_TOT_MSGOBJS)
return -ENODEV;
- if ( ((obj=objects_p[minor_nr]) == NULL) ||
+ if ( ((obj=objects_p[minor_nr]) == NULL) ||
((chip=objects_p[minor_nr]->hostchip) == NULL) ) {
CANMSG("There is no hardware support for the device file with minor nr.: %d\n",minor_nr);
return -ENODEV;
no_canuser:
atomic_dec(&obj->obj_used);
-
+
return ret;
}