-/* main.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: main.c - the CAN driver top level glue code (needs rewrite) */
+/* */
+/* 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. */
+/**************************************************************************/
#ifndef EXPORT_SYMTAB
#define EXPORT_SYMTAB
#endif
-#include <linux/autoconf.h>
-
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/poll.h>
#include <linux/version.h>
-#include <linux/autoconf.h>
#include <linux/interrupt.h>
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0))
+ #include <linux/autoconf.h>
#include <linux/wrapper.h>
#else
#include <linux/device.h>
#endif
#endif
-#if !defined (__GENKSYMS__)
+#if !defined (__GENKSYMS__)
#if (defined (MODVERSIONS) && !defined(NOVER))
#include <linux/modversions.h>
/*#include "../include/main.ver"*/
can_spinlock_t canuser_manipulation_lock;
-/* Module parameters, some must be supplied at module loading time */
int major=CAN_MAJOR;
-MODULE_PARM(major,"1i");
-MODULE_PARM_DESC(major,"can be used to change default major [" __MODULE_STRING(CAN_MAJOR) "]");
int minor[MAX_TOT_CHIPS]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
+int extended=0;
+int pelican=0;
+int baudrate[MAX_TOT_CHIPS];
+char *hw[MAX_HW_CARDS]={NULL,};
+int irq[MAX_IRQ]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
+unsigned long io[MAX_HW_CARDS]={-1,-1,-1,-1,-1,-1,-1,-1};
+long clockfreq[MAX_HW_CARDS];
+int stdmask=0;
+int extmask=0;
+int mo15mask=0;
+int processlocal=0;
+
+unsigned int minor_specified;
+unsigned int baudrate_specified;
+unsigned int hw_specified;
+unsigned int irq_specified;
+unsigned int io_specified;
+unsigned int clockfreq_specified;
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,12))
+/* Module parameters, some must be supplied at module loading time */
+MODULE_PARM(major,"1i");
/*MODULE_PARM(minor, "1-" __MODULE_STRING(MAX_TOT_CHIPS)"i");*/
MODULE_PARM(minor, "1-" __MODULE_STRING(MAX_TOT_CHIPS_STR)"i");
-MODULE_PARM_DESC(minor,"can be used to change default starting minor for each channel");
-int extended=0;
MODULE_PARM(extended,"1i");
+MODULE_PARM(pelican,"1i");
+MODULE_PARM(baudrate, "1-" __MODULE_STRING(MAX_TOT_CHIPS_STR)"i");
+MODULE_PARM(hw, "1-" __MODULE_STRING(MAX_HW_CARDS)"s");
+MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_IRQ)"i");
+MODULE_PARM(io, "1-" __MODULE_STRING(MAX_HW_CARDS)"i");
+MODULE_PARM(clockfreq, "1-" __MODULE_STRING(MAX_HW_CARDS)"i");
+MODULE_PARM(stdmask, "1i");
+MODULE_PARM(extmask, "1i");
+MODULE_PARM(mo15mask, "1i");
+MODULE_PARM(processlocal, "1i");
+
+#else /* LINUX_VERSION_CODE >= 2,6,12 */
+module_param(major, int, 0);
+module_param_array(minor, int, &minor_specified, 0);
+module_param(extended, int, 0);
+module_param(pelican, int, 0);
+module_param_array(baudrate, int, &baudrate_specified, 0);
+module_param_array(hw, charp, &hw_specified, 0);
+module_param_array(irq, int, &irq_specified, 0);
+module_param_array(io, ulong, &io_specified, 0);
+module_param_array(clockfreq, long, &clockfreq_specified, 0);
+module_param(stdmask, int, 0);
+module_param(extmask, int, 0);
+module_param(mo15mask, int, 0);
+module_param(processlocal, int, 0);
+#endif /* LINUX_VERSION_CODE >= 2,6,12 */
+
+MODULE_PARM_DESC(major,"can be used to change default major [" __MODULE_STRING(CAN_MAJOR) "]");
+MODULE_PARM_DESC(minor,"can be used to change default starting minor for each channel");
MODULE_PARM_DESC(extended,"enables automatic switching to extended format if ID>2047,"
" selects extended frames reception for i82527");
-int pelican=0;
-MODULE_PARM(pelican,"1i");
MODULE_PARM_DESC(pelican,"unused parameter, PeliCAN used by default for sja1000p chips");
-int baudrate[MAX_TOT_CHIPS];
-MODULE_PARM(baudrate, "1-" __MODULE_STRING(MAX_TOT_CHIPS_STR)"i");
MODULE_PARM_DESC(baudrate,"baudrate for each channel in step of 1kHz");
-char *hw[MAX_HW_CARDS]={NULL,};
-MODULE_PARM(hw, "1-" __MODULE_STRING(MAX_HW_CARDS)"s");
MODULE_PARM_DESC(hw,"list of boards types to initialize - virtual,pip5,...");
-int irq[MAX_IRQ]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
-MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_IRQ)"i");
MODULE_PARM_DESC(irq,"list of iterrupt signal numbers, most ISA has one per chip, no value for PCI or virtual");
-unsigned long io[MAX_HW_CARDS]={-1,-1,-1,-1,-1,-1,-1,-1};
-MODULE_PARM(io, "1-" __MODULE_STRING(MAX_HW_CARDS)"i");
MODULE_PARM_DESC(io,"IO address for each board, use 0 for PCI or virtual");
-int stdmask=0;
-MODULE_PARM(stdmask, "1i");
+MODULE_PARM_DESC(clockfreq,"base board clock source frequency in step of 1kHz");
MODULE_PARM_DESC(stdmask,"default standard mask for i82527 chips");
-int extmask=0;
-MODULE_PARM(extmask, "1i");
MODULE_PARM_DESC(extmask,"default extended mask for i82527 chips");
-int mo15mask=0;
-MODULE_PARM(mo15mask, "1i");
MODULE_PARM_DESC(mo15mask,"mask for communication object 15 of i82527 chips");
-int processlocal=0;
-MODULE_PARM(processlocal, "1i");
MODULE_PARM_DESC(processlocal,"select postprocessing/loopback of transmitted messages - "
"0 .. disabled, 1 .. can be enabled by FIFO filter, 2 .. enabled by default");
+
#ifdef CAN_WITH_RTL
int can_rtl_priority=-1;
MODULE_PARM(can_rtl_priority, "1i");
#endif
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36))
+static int can_oldapi_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ return can_ioctl(file, cmd, arg);
+}
+#endif /* 2.6.36 */
+
/* Pointers to dynamically allocated memory are maintained in a linked list
* to ease memory deallocation.
*/
struct file_operations can_fops=
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0))
- owner: THIS_MODULE,
+ owner: THIS_MODULE,
#endif
read: can_read,
write: can_write,
poll: can_poll,
- ioctl: can_ioctl,
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36))
+ ioctl: can_oldapi_ioctl,
+ #else /* Linux 3.x */
+ unlocked_ioctl: can_ioctl,
+ #endif /* Linux 3.x */
open: can_open,
release: can_close,
#ifdef CAN_ENABLE_KERN_FASYNC
/*
2.6 kernel attributes for sysfs
-
+
static ssize_t show_xxx(struct class_device *cdev, char *buf)
{
return sprintf(buf, "xxxx\n");
for (i=0; i<hardware_p->nr_boards; i++) {
candev=hardware_p->candevice[i];
- if (candev->hwspecops->request_io(candev))
+ if (candev->hwspecops->request_io(candev))
goto request_io_error;
candev->flags|=CANDEV_IO_RESERVED;
}
for (i=0; i<hardware_p->nr_boards; i++) {
candev=hardware_p->candevice[i];
- if (candev->hwspecops->reset(candev))
+ if (candev->hwspecops->reset(candev))
goto reset_error;
}
}
chip->flags |= CHIP_ATTACHED;
-
+
if(can_chip_setup_irq(chip)<0) {
CANMSG("Error to setup chip IRQ\n");
goto interrupt_error;
{
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0))
char dev_name[32];
- #else
+ #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,25) /* >= 2.6.15 */
struct class_device *this_dev;
+ #else
+ struct device *this_dev;
#endif
int dev_minor;
for(i=0;i<MAX_TOT_MSGOBJS;i++) {
#else
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,14))
this_dev=class_device_create(can_class, MKDEV(major, dev_minor), NULL, "can%d", dev_minor);
- #else /* >= 2.6.15 */
+ #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,25) /* >= 2.6.15 */
this_dev=class_device_create(can_class, NULL, MKDEV(major, dev_minor), NULL, "can%d", dev_minor);
- #endif /* >= 2.6.15 */
- if(!this_dev){
+ #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
+ this_dev=device_create_drvdata(can_class, NULL, MKDEV(major, dev_minor), objects_p[i], "can%d", dev_minor);
+ #else /* >= 2.6.28 */
+ this_dev=device_create(can_class, NULL, MKDEV(major, dev_minor), objects_p[i], "can%d", dev_minor);
+ #endif /* >= 2.6.28 */
+ if(IS_ERR(this_dev)){
CANMSG("problem to create device \"can%d\" in the class \"can\"\n", dev_minor);
+ #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,25)
}else{
- this_dev->class_data=objects_p[i];
+ /*this_dev->class_data=objects_p[i];*/
+ class_set_devdata(this_dev,objects_p[i]);
+ #endif /* <= 2.6.25 */
}
#ifdef CONFIG_DEVFS_FS
devfs_mk_cdev(MKDEV(major, dev_minor), S_IFCHR | S_IRUGO | S_IWUGO, "can%d", dev_minor);
#ifdef CONFIG_PROC_FS
proc_error: ;
CANMSG("Error registering /proc entry.\n");
- goto memory_error;
+ goto memory_error;
#endif
interrupt_error: ;
canqueue_rtl_done();
#endif /*CAN_WITH_RTL*/
- res=unregister_chrdev(major,DEVICE_NAME);
- if (res<0)
- CANMSG("Error unloading CAN driver, error: %d\n",res);
- else
- CANMSG("No CAN devices or driver setup error.\n");
+ unregister_chrdev(major,DEVICE_NAME);
+ CANMSG("No CAN devices or driver setup error.\n");
register_error:
- if ( can_del_mem_list() )
+ if ( can_del_mem_list() )
CANMSG("Error deallocating memory\n");
return -ENODEV;
void cleanup_module(void)
{
- int res=0,i=0;
+#if defined(CONFIG_DEVFS_FS) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
+ int i=0;
+#endif
#ifdef CONFIG_PROC_FS
if (can_delete_procdir())
- CANMSG("Error unregistering /proc/can entry.\n");
+ CANMSG("Error unregistering /proc/can entry.\n");
#endif
#if defined(CONFIG_DEVFS_FS) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
#ifdef CONFIG_DEVFS_FS
devfs_remove("can%d", dev_minor);
#endif
+ #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,25)
class_device_destroy(can_class, MKDEV(major, dev_minor));
+ #else /* >= 2.6.26 */
+ device_destroy(can_class, MKDEV(major, dev_minor));
+ #endif /* >= 2.6.26 */
}
#endif
}
canqueue_rtl_done();
#endif /*CAN_WITH_RTL*/
- if ( can_del_mem_list() )
+ if ( can_del_mem_list() )
CANMSG("Error deallocating memory\n");
- res=unregister_chrdev(major,DEVICE_NAME);
- if (res<0)
- CANMSG("Error unregistering CAN driver, error: %d\n",res);
+ unregister_chrdev(major,DEVICE_NAME);
}
projects / lincan.git / blobdiff