Merge branch 'master' into can-usb1
[lincan.git] / lincan / include / can_sysdep.h
index 9e6adf5..1009689 100644 (file)
@@ -1,6 +1,24 @@
+/* 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>
+#include <time.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 */
+#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 */
 
+#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_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
+
+#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        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*/