+/* 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
+#ifdef CAN_WITH_RTL
+#include <rtl.h>
+#include <rtl_sync.h>
+#include <rtl_core.h>
+#include <rtl_mutex.h>
+#include <rtl_sched.h>
+#endif /*CAN_WITH_RTL*/
+
/*#define __NO_VERSION__*/
/*#include <linux/module.h>*/
#include <linux/sched.h>
#include <linux/interrupt.h>
#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 */
+#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)
+#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 */
+#ifdef __HAVE_ARCH_CMPXCHG
+ #define CAN_HAVE_ARCH_CMPXCHG
+#endif
+
+#ifndef CAN_WITH_RTL
+/* Standard LINUX kernel */
+
+#define can_spinlock_t spinlock_t
+#define can_spin_irqflags_t unsigned long
+#define can_spin_lock spin_lock
+#define can_spin_unlock spin_unlock
+#define can_spin_lock_irqsave spin_lock_irqsave
+#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))
+#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
+
+#else /*CAN_WITH_RTL*/
+
+#define can_spinlock_t rtl_spinlock_t
+#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_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;
+
+#endif /*CAN_WITH_RTL*/
+
#endif /*_CAN_SYSDEP_H*/
projects / lincan.git / blobdiff