ieee1394_types.h

1394在linux下单独的驱动程序代码

#ifndef _IEEE1394_TYPES_H
#define _IEEE1394_TYPES_H

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/version.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <asm/semaphore.h>
#include <asm/byteorder.h>


#ifndef BITS_TO_LONGS	/* < 2.4.21-pre6 */
#define BITS_TO_LONGS(bits) \
(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
#define DECLARE_BITMAP(name,bits) \
unsigned long name[BITS_TO_LONGS(bits)]
#define CLEAR_BITMAP(name,bits) \
memset(name, 0, BITS_TO_LONGS(bits)*sizeof(unsigned long))
#endif


/* Transaction Label handling */
struct hpsb_tlabel_pool {
	DECLARE_BITMAP(pool, 64);
	spinlock_t lock;
	u8 next;
	u32 allocations;
	struct semaphore count;
};

#define HPSB_TPOOL_INIT(_tp)			\
	do {						\
	CLEAR_BITMAP((_tp)->pool, 64);		\
	spin_lock_init(&(_tp)->lock);		\
	(_tp)->next = 0;			\
	(_tp)->allocations = 0;			\
	sema_init(&(_tp)->count, 63);		\
	} while (0)


typedef u32 quadlet_t;
typedef u64 octlet_t;
typedef u16 nodeid_t;

typedef u8  byte_t;
typedef u64 nodeaddr_t;
typedef u16 arm_length_t;

#define BUS_MASK  0xffc0
#define BUS_SHIFT 6
#define NODE_MASK 0x003f
#define LOCAL_BUS 0xffc0
#define ALL_NODES 0x003f

#define NODEID_TO_BUS(nodeid)	((nodeid & BUS_MASK) >> BUS_SHIFT)
#define NODEID_TO_NODE(nodeid)	(nodeid & NODE_MASK)

/* Can be used to consistently print a node/bus ID. */
#define NODE_BUS_FMT		"%d-%02d:%04d"
#define NODE_BUS_ARGS(__host, __nodeid)	\
__host->id, NODEID_TO_NODE(__nodeid), NODEID_TO_BUS(__nodeid)

#define HPSB_PRINT(level, fmt, args...) printk(level "ieee1394: " fmt "\n" , ## args)

#define HPSB_DEBUG(fmt, args...) HPSB_PRINT(KERN_DEBUG, fmt , ## args)
#define HPSB_INFO(fmt, args...) HPSB_PRINT(KERN_INFO, fmt , ## args)
#define HPSB_NOTICE(fmt, args...) HPSB_PRINT(KERN_NOTICE, fmt , ## args)
#define HPSB_WARN(fmt, args...) HPSB_PRINT(KERN_WARNING, fmt , ## args)
#define HPSB_ERR(fmt, args...) HPSB_PRINT(KERN_ERR, fmt , ## args)

#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
#define HPSB_VERBOSE(fmt, args...) HPSB_PRINT(KERN_DEBUG, fmt , ## args)
#else
#define HPSB_VERBOSE(fmt, args...)
#endif

#define HPSB_PANIC(fmt, args...) panic("ieee1394: " fmt "\n" , ## args)

#define HPSB_TRACE() HPSB_PRINT(KERN_INFO, "TRACE - %s, %s(), line %d", __FILE__, __FUNCTION__, __LINE__)


#ifdef __BIG_ENDIAN

static __inline__ void *memcpy_le32(u32 *dest, const u32 *__src, size_t count)
{
	void *tmp = dest;
	u32 *src = (u32 *)__src;
	
	count /= 4;
	
	while (count--) {
		*dest++ = swab32p(src++);
	}
	
	return tmp;
}

#else

static __inline__ void *memcpy_le32(u32 *dest, const u32 *src, size_t count)
{
	return memcpy(dest, src, count);
}

#endif /* __BIG_ENDIAN */

#endif /* _IEEE1394_TYPES_H */