+/**************************************************************************/
+/* File: can_sysdep.h - hides differences between individual Linux kernel */
+/* versions and RT extensions */
+/* */
+/* 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 */
+/* */
+/* 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 _CAN_SYSDEP_H
#define _CAN_SYSDEP_H
+#ifdef CAN_WITH_RTL
+#include <rtl.h>
+#include <rtl_sync.h>
+#include <rtl_core.h>
+#include <rtl_mutex.h>
+#include <rtl_sched.h>
+#include <time.h>
+#endif /*CAN_WITH_RTL*/
+
/*#define __NO_VERSION__*/
/*#include <linux/module.h>*/
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
+#include <linux/time.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
+ #include <linux/kref.h>
+#endif
#include <asm/errno.h>
+
#include <asm/io.h>
#include <asm/atomic.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
+#include "lincan_config.h"
+
+/*optional features*/
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0))
+#define CAN_ENABLE_KERN_FASYNC
+#ifdef CONFIG_PCI
+#define CAN_ENABLE_PCI_SUPPORT
+#endif
+#ifdef CONFIG_OC_LINCANVME
+#define CAN_ENABLE_VME_SUPPORT
+#endif
+#endif
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
#include <linux/malloc.h>
#else
#include <linux/slab.h>
#endif
+#ifdef CAN_ENABLE_PCI_SUPPORT
+#include "linux/pci.h"
+#endif /*CAN_ENABLE_PCI_SUPPORT*/
/* Next is not sctrictly correct, because of 2.3.0, 2.3.1, 2.3.2
kernels need next definitions too */
#define DECLARE_MUTEX(name) struct semaphore name=MUTEX
#endif /* 2.2.19 */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) && !defined(DECLARE_TASKLET)
+ #define tasklet_struct tq_struct
+ #define DECLARE_TASKLET(_name, _func, _data) \
+ struct tq_struct _name = { sync: 0, routine: _func, data: (void*)_data }
+
+ /* void tasklet_init(struct tasklet_struct *t, void (*func)(unsigned long), unsigned long data); */
+ #define tasklet_init(_tasklet, _func, _data) \
+ do{ \
+ /* (_tasklet)->next=NULL; */ \
+ /* Above not needed for 2.2.x and buggy for 2.4.x */ \
+ (_tasklet)->sync=0; \
+ (_tasklet)->routine=_func; \
+ (_tasklet)->data=(void*)_data; \
+ }while(0)
+
+ /* void tasklet_schedule(struct tasklet_struct *t) */
+ #define tasklet_schedule(_tasklet) \
+ do{ \
+ queue_task(_tasklet,&tq_immediate); \
+ mark_bh(IMMEDIATE_BH); \
+ }while(0)
+
+ /* void tasklet_kill(struct tasklet_struct *t); */
+ #define tasklet_kill(_tasklet) \
+ synchronize_irq()
+
+#endif /* 2.4.0 */
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,7)) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
#endif /* Linux kernel < 2.5.7 or >= 2.6.0 */
-
+#ifndef CAN_WITH_RTL
#if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68)) && !defined(IRQ_RETVAL))
- typedef void irqreturn_t;
- #define IRQ_NONE
- #define IRQ_HANDLED
- #define IRQ_RETVAL(x)
+ typedef void can_irqreturn_t;
+ #define CAN_IRQ_NONE
+ #define CAN_IRQ_HANDLED
+ #define CAN_IRQ_RETVAL(x)
+#else /* <=2.5.67 */
+ typedef irqreturn_t can_irqreturn_t;
+ #define CAN_IRQ_NONE IRQ_NONE
+ #define CAN_IRQ_HANDLED IRQ_HANDLED
+ #define CAN_IRQ_RETVAL IRQ_RETVAL
#endif /* <=2.5.67 */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
+ #define CAN_IRQ_HANDLER_ARGS(irq_number, dev_id) \
+ int irq_number, void *dev_id, struct pt_regs *regs
+#else /* < 2.6.19 */
+ #define CAN_IRQ_HANDLER_ARGS(irq_number, dev_id) \
+ int irq_number, void *dev_id
+#endif /* < 2.6.19 */
+#else /*CAN_WITH_RTL*/
+ typedef int can_irqreturn_t;
+ #define CAN_IRQ_NONE 0
+ #define CAN_IRQ_HANDLED 1
+ #define CAN_IRQ_RETVAL(x) ((x) != 0)
+ #define CAN_IRQ_HANDLER_ARGS(irq_number, dev_id) \
+ int irq_number, void *dev_id, struct pt_regs *regs
+#endif /*CAN_WITH_RTL*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,33))
#define can_synchronize_irq(irqnum) synchronize_irq()
#define del_timer_sync del_timer
#endif /* <2.4.0 */
-#define CAN_ENABLE_KERN_FASYNC
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9))
+ typedef unsigned long can_ioptr_t;
+ #define can_ioptr2ulong(ioaddr) ((unsigned long)(ioaddr))
+ #define can_ulong2ioptr(addr) ((unsigned long)(addr))
+ #define can_inb(ioaddr) inb(ioaddr)
+ #define can_outb(data,ioaddr) outb(data,ioaddr)
+ #define can_inw(ioaddr) inw(ioaddr)
+ #define can_outw(data,ioaddr) outw(data,ioaddr)
+ #define can_inl(ioaddr) inl(ioaddr)
+ #define can_outl(data,ioaddr) outl(data,ioaddr)
+#else /* >=2.6.9 */
+ typedef void __iomem * can_ioptr_t;
+ #define can_ioptr2ulong(ioaddr) ((unsigned long __force)(ioaddr))
+ #define can_ulong2ioptr(addr) ((can_ioptr_t)(addr))
+ #define can_inb(ioaddr) inb(can_ioptr2ulong(ioaddr))
+ #define can_outb(data,ioaddr) outb(data,can_ioptr2ulong(ioaddr))
+ #define can_inw(ioaddr) inw(can_ioptr2ulong(ioaddr))
+ #define can_outw(data,ioaddr) outw(data,can_ioptr2ulong(ioaddr))
+ #define can_inl(ioaddr) inl(can_ioptr2ulong(ioaddr))
+ #define can_outl(data,ioaddr) outl(data,can_ioptr2ulong(ioaddr))
+#endif
+
+#define can_readb readb
+#define can_writeb writeb
+#define can_readw readw
+#define can_writew writew
+#define can_readl readl
+#define can_writel writel
+
+#define can_ioport2ioptr can_ulong2ioptr
+
+#ifdef __HAVE_ARCH_CMPXCHG
+ #define CAN_HAVE_ARCH_CMPXCHG
+ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
+ #define CAN_HAVE_ATOMIC_CMPXCHG
+ #endif
+#endif
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
+ #define can_pci_dev_get(_M_pdev) (_M_pdev)
+ #define can_pci_dev_put(_M_pdev) do {} while(0)
+ #define can_pci_get_device pci_find_device
+ #define can_pci_get_subsys pci_find_subsys
+#else /* > 2.6.0 */
+ #define can_pci_dev_get pci_dev_get
+ #define can_pci_dev_put pci_dev_put
+ #define can_pci_get_device pci_get_device
+ #define can_pci_get_subsys pci_get_subsys
+#endif
#ifndef CAN_WITH_RTL
+/* Standard LINUX kernel */
#define can_spinlock_t spinlock_t
#define can_spin_irqflags_t unsigned long
#define can_spin_unlock_irqrestore spin_unlock_irqrestore
#define can_spin_lock_init spin_lock_init
+#ifndef DEFINE_SPINLOCK
+#define CAN_DEFINE_SPINLOCK(x) can_spinlock_t x = SPIN_LOCK_UNLOCKED
+#else /*DEFINE_SPINLOCK*/
+#define CAN_DEFINE_SPINLOCK DEFINE_SPINLOCK
+#endif /*DEFINE_SPINLOCK*/
+
+#if !defined(CONFIG_PREEMPT_RT) && ( defined(CONFIG_PREEMPT) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) )
+#define can_preempt_disable preempt_disable
+#define can_preempt_enable preempt_enable
+#else /*CONFIG_PREEMPT*/
+#define can_preempt_disable() do { } while (0)
+#define can_preempt_enable() do { } while (0)
+#endif /*CONFIG_PREEMPT*/
+
+#define can_enable_irq enable_irq
+#define can_disable_irq disable_irq
+
+#define can_printk printk
+
+/* CAN message timestamp source, it is called from interrupt context */
+#define can_gettimeofday do_gettimeofday
+
#else /*CAN_WITH_RTL*/
#define can_spinlock_t rtl_spinlock_t
-#define can_spin_irqflags_t unsigned long
+#define can_spin_irqflags_t rtl_irqstate_t
#define can_spin_lock rtl_spin_lock
#define can_spin_unlock rtl_spin_unlock
#define can_spin_lock_irqsave rtl_spin_lock_irqsave
#define can_spin_unlock_irqrestore rtl_spin_unlock_irqrestore
#define can_spin_lock_init rtl_spin_lock_init
+#define CAN_DEFINE_SPINLOCK(x) can_spinlock_t x = SPIN_LOCK_UNLOCKED
+
+#define can_preempt_disable() do { } while (0)
+#define can_preempt_enable() do { } while (0)
+
+#define can_enable_irq rtl_hard_enable_irq
+#define can_disable_irq rtl_hard_disable_irq
+
+#define can_printk rtl_printf
+
+/*
+ * terrible hack to test rtl_file private_data concept, ugh !!!
+ * this would result in crash on architectures, where
+ * sizeof(int) < sizeof(void *)
+ */
+#define can_set_rtl_file_private_data(fptr, p) do{ fptr->f_minor=(long)(p); } while(0)
+#define can_get_rtl_file_private_data(fptr) ((void*)((fptr)->f_minor))
+
+extern can_spinlock_t can_irq_manipulation_lock;
+
+/* CAN message timestamp source, it is called from interrupt context */
+#define can_gettimeofday(ptr) do {\
+ struct timespec temp_timespec;\
+ clock_gettime(CLOCK_REALTIME,&temp_timespec);\
+ ptr->tv_usec=temp_timespec.tv_nsec/1000;\
+ ptr->tv_sec=temp_timespec.tv_sec;\
+ } while(0)
+
#endif /*CAN_WITH_RTL*/
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4))
+ #include <linux/kthread.h>
+ #define can_kthread_create kthread_create
+ #define can_kthread_run kthread_run
+ #define can_kthread_bind kthread_bind
+ #define can_kthread_stop kthread_stop
+ #define can_kthread_should_stop kthread_should_stop
+#else
+ #define can_kthread_create
+ #define can_kthread_run
+ #define can_kthread_bind
+ #define can_kthread_stop
+ #define can_kthread_should_stop
+#endif
+
+
#endif /*_CAN_SYSDEP_H*/