+/* can_sysdep.h - hides differences between individual Linux kernel
+ * versions and RT extensions
+ * Linux CAN-bus device driver.
+ * Written 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
+ */
+
#ifndef _CAN_SYSDEP_H
#define _CAN_SYSDEP_H
#include <rtl_core.h>
#include <rtl_mutex.h>
#include <rtl_sched.h>
+#include <time.h>
#endif /*CAN_WITH_RTL*/
/*#define __NO_VERSION__*/
#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>
#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))
#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 del_timer_sync del_timer
#endif /* <2.4.0 */
+#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) inb(ioaddr)
+ #define can_outw(data,ioaddr) outb(data,ioaddr)
+ #define can_inl(ioaddr) inb(ioaddr)
+ #define can_outl(data,ioaddr) outb(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) inb(can_ioptr2ulong(ioaddr))
+ #define can_outw(data,ioaddr) outb(data,can_ioptr2ulong(ioaddr))
+ #define can_inl(ioaddr) inb(can_ioptr2ulong(ioaddr))
+ #define can_outl(data,ioaddr) outb(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
+#endif
+
#ifndef CAN_WITH_RTL
/* Standard LINUX kernel */
#define can_spin_unlock_irqrestore spin_unlock_irqrestore
#define can_spin_lock_init spin_lock_init
-#if defined(CONFIG_PREEMPT) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
+#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_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_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_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*/
#endif /*_CAN_SYSDEP_H*/