lincan/include/can_sysdep.h

   1 #ifndef _CAN_SYSDEP_H
   2 #define _CAN_SYSDEP_H
   3
   4 #ifdef CAN_WITH_RTL
   5 #include <rtl.h>
   6 #include <rtl_sync.h>
   7 #include <rtl_core.h>
   8 #include <rtl_mutex.h>
   9 #include <rtl_sched.h>
  10 #endif /*CAN_WITH_RTL*/
  11
  12 /*#define __NO_VERSION__*/
  13 /*#include <linux/module.h>*/
  14
  15 #include <linux/version.h>
  16 #include <linux/wait.h>
  17 #include <linux/list.h>
  18 #include <linux/fs.h>
  19 #include <linux/ioport.h>
  20 #include <linux/delay.h>
  21 #include <linux/sched.h>
  22 #include <linux/interrupt.h>
  23 #include <asm/errno.h>
  24
  25 #include <asm/io.h>
  26 #include <asm/atomic.h>
  27 #include <asm/irq.h>
  28 #include <asm/uaccess.h>
  29
  30 /*optional features*/
  31 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0))
  32 #define CAN_ENABLE_KERN_FASYNC
  33 #define CAN_ENABLE_PCI_SUPPORT
  34 #endif
  35
  36 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
  37 #include <linux/malloc.h>
  38 #else
  39 #include <linux/slab.h>
  40 #endif
  41
  42 #ifdef CAN_ENABLE_PCI_SUPPORT
  43 #include "linux/pci.h"
  44 #endif /*CAN_ENABLE_PCI_SUPPORT*/
  45
  46 /* Next is not sctrictly correct, because of 2.3.0, 2.3.1, 2.3.2
  47    kernels need next definitions  too */
  48 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,19)) /* may need correction */
  49   #define wait_queue_head_t struct wait_queue *
  50   #define wait_queue_t      struct wait_queue
  51   #define init_waitqueue_head(queue_head) (*queue_head=NULL)
  52   #define init_waitqueue_entry(qentry,qtask) \
  53                         (qentry->next=NULL,qentry->task=qtask)
  54   #define DECLARE_WAIT_QUEUE_HEAD(name) \
  55         struct wait_queue * name=NULL
  56   #define DECLARE_WAITQUEUE(wait, current) \
  57         struct wait_queue wait = { current, NULL }
  58   #define init_MUTEX(sem) (*sem=MUTEX)
  59   #define DECLARE_MUTEX(name) struct semaphore name=MUTEX
  60 #endif /* 2.2.19 */
  61
  62 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) && !defined(DECLARE_TASKLET)
  63   #define tasklet_struct tq_struct
  64   #define DECLARE_TASKLET(_name, _func, _data) \
  65                 struct tq_struct _name = { sync: 0, routine: _func, data: (void*)_data }
  66
  67   /* void tasklet_init(struct tasklet_struct *t, void (*func)(unsigned long), unsigned long data); */
  68   #define tasklet_init(_tasklet, _func, _data) \
  69     do{ \
  70        /* (_tasklet)->next=NULL; */ \
  71        /* Above not needed for 2.2.x and buggy for 2.4.x */ \
  72        (_tasklet)->sync=0; \
  73        (_tasklet)->routine=_func; \
  74        (_tasklet)->data=(void*)_data; \
  75     }while(0)
  76
  77   /* void tasklet_schedule(struct tasklet_struct *t) */
  78   #define tasklet_schedule(_tasklet) \
  79     do{ \
  80        queue_task(_tasklet,&tq_immediate); \
  81        mark_bh(IMMEDIATE_BH); \
  82     }while(0)
  83
  84   /* void tasklet_kill(struct tasklet_struct *t); */
  85   #define tasklet_kill(_tasklet) \
  86                 synchronize_irq()
  87
  88 #endif /* 2.4.0 */
  89
  90
  91 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,7)) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
  92
  93 #define MINOR_NR \
  94         (MINOR(file->f_dentry->d_inode->i_rdev))
  95
  96 #else /* Linux kernel < 2.5.7 or >= 2.6.0 */
  97
  98 #define MINOR_NR \
  99         (minor(file->f_dentry->d_inode->i_rdev))
 100
 101 #endif /* Linux kernel < 2.5.7 or >= 2.6.0 */
 102
 103 #ifndef CAN_WITH_RTL
 104 #if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68)) && !defined(IRQ_RETVAL))
 105   typedef void can_irqreturn_t;
 106   #define CAN_IRQ_NONE
 107   #define CAN_IRQ_HANDLED
 108   #define CAN_IRQ_RETVAL(x)
 109 #else /* <=2.5.67 */
 110   typedef irqreturn_t can_irqreturn_t;
 111   #define CAN_IRQ_NONE    IRQ_NONE
 112   #define CAN_IRQ_HANDLED IRQ_HANDLED
 113   #define CAN_IRQ_RETVAL  IRQ_RETVAL
 114 #endif /* <=2.5.67 */
 115 #else /*CAN_WITH_RTL*/
 116   typedef int can_irqreturn_t;
 117   #define CAN_IRQ_NONE        0
 118   #define CAN_IRQ_HANDLED     1
 119   #define CAN_IRQ_RETVAL(x)   ((x) != 0)
 120 #endif /*CAN_WITH_RTL*/
 121
 122 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,33))
 123    #define can_synchronize_irq(irqnum) synchronize_irq()
 124 #else /* >=2.5.33 */
 125    #define can_synchronize_irq synchronize_irq
 126 #endif
 127
 128 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
 129   #define del_timer_sync del_timer
 130 #endif /* <2.4.0 */
 131
 132 #ifndef CAN_WITH_RTL
 133 /* Standard LINUX kernel */
 134
 135 #define can_spinlock_t             spinlock_t
 136 #define can_spin_irqflags_t        unsigned long
 137 #define can_spin_lock              spin_lock
 138 #define can_spin_unlock            spin_unlock
 139 #define can_spin_lock_irqsave      spin_lock_irqsave
 140 #define can_spin_unlock_irqrestore spin_unlock_irqrestore
 141 #define can_spin_lock_init         spin_lock_init
 142
 143 #if defined(CONFIG_PREEMPT) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
 144 #define can_preempt_disable        preempt_disable
 145 #define can_preempt_enable         preempt_enable
 146 #else /*CONFIG_PREEMPT*/
 147 #define can_preempt_disable()      do { } while (0)
 148 #define can_preempt_enable()       do { } while (0)
 149 #endif /*CONFIG_PREEMPT*/
 150
 151 #define can_enable_irq             enable_irq
 152 #define can_disable_irq            disable_irq
 153
 154 #define can_printk                 printk
 155
 156 #else /*CAN_WITH_RTL*/
 157
 158 #define can_spinlock_t             rtl_spinlock_t
 159 #define can_spin_irqflags_t        rtl_irqstate_t
 160 #define can_spin_lock              rtl_spin_lock
 161 #define can_spin_unlock            rtl_spin_unlock
 162 #define can_spin_lock_irqsave      rtl_spin_lock_irqsave
 163 #define can_spin_unlock_irqrestore rtl_spin_unlock_irqrestore
 164 #define can_spin_lock_init         rtl_spin_lock_init
 165
 166 #define can_preempt_disable()      do { } while (0)
 167 #define can_preempt_enable()       do { } while (0)
 168
 169 #define can_enable_irq             rtl_hard_enable_irq
 170 #define can_disable_irq            rtl_hard_disable_irq
 171
 172 #define can_printk                 rtl_printf
 173
 174 /*
 175  * terrible hack to test rtl_file private_data concept, ugh !!!
 176  * this would result in crash on architectures,  where
 177  * sizeof(int) < sizeof(void *)
 178  */
 179 #define can_set_rtl_file_private_data(fptr, p) do{ fptr->f_minor=(long)(p); } while(0)
 180 #define can_get_rtl_file_private_data(fptr) ((void*)((fptr)->f_minor))
 181
 182 extern can_spinlock_t can_irq_manipulation_lock;
 183
 184 #endif /*CAN_WITH_RTL*/
 185
 186 #endif /*_CAN_SYSDEP_H*/