ltpc.h

来自「内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系」· C头文件 代码 · 共 74 行

/***   ltpc.h
 *
 *
 ***/

#define LT_GETRESULT  0x00
#define LT_WRITEMEM   0x01
#define LT_READMEM    0x02
#define LT_GETFLAGS   0x04
#define LT_SETFLAGS   0x05
#define LT_INIT       0x10
#define LT_SENDLAP    0x13
#define LT_RCVLAP     0x14

/* the flag that we care about */
#define LT_FLAG_ALLLAP 0x04

struct lt_getresult {
	unsigned char command;
	unsigned char mailbox;
};

struct lt_mem {
	unsigned char command;
	unsigned char mailbox;
	unsigned short addr;	/* host order */
	unsigned short length;	/* host order */
};

struct lt_setflags {
	unsigned char command;
	unsigned char mailbox;
	unsigned char flags;
};

struct lt_getflags {
	unsigned char command;
	unsigned char mailbox;
};

struct lt_init {
	unsigned char command;
	unsigned char mailbox;
	unsigned char hint;
};

struct lt_sendlap {
	unsigned char command;
	unsigned char mailbox;
	unsigned char dnode;
	unsigned char laptype;
	unsigned short length;	/* host order */
};

struct lt_rcvlap {
	unsigned char command;
	unsigned char dnode;
	unsigned char snode;
	unsigned char laptype;
	unsigned short length;	/* host order */
};

union lt_command {
	struct lt_getresult getresult;
	struct lt_mem mem;
	struct lt_setflags setflags;
	struct lt_getflags getflags;
	struct lt_init init;
	struct lt_sendlap sendlap;
	struct lt_rcvlap rcvlap;
};
typedef union lt_command lt_command;