ieee1394_transactions.h

1394在linux下单独的驱动程序代码

#ifndef _IEEE1394_TRANSACTIONS_H
#define _IEEE1394_TRANSACTIONS_H

#include "ieee1394_core.h"


/*
* Get and free transaction labels.
*/
int hpsb_get_tlabel(struct hpsb_packet *packet);
void hpsb_free_tlabel(struct hpsb_packet *packet);

struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node,
										 u64 addr, size_t length);
struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node,
                                         u64 addr, int extcode, quadlet_t *data,
										 quadlet_t arg);
struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, nodeid_t node,
										   u64 addr, int extcode, octlet_t *data,
										   octlet_t arg);
struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host,
                                        quadlet_t data) ;
struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host,
										int length, int channel,
										int tag, int sync);
struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node,
										   u64 addr, quadlet_t *buffer, size_t length);
struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer,
                                           int length, int channel, int tag, int sync);

/*
* hpsb_packet_success - Make sense of the ack and reply codes and
* return more convenient error codes:
* 0           success
* -EBUSY      node is busy, try again
* -EAGAIN     error which can probably resolved by retry
* -EREMOTEIO  node suffers from an internal error
* -EACCES     this transaction is not allowed on requested address
* -EINVAL     invalid address at node
*/
int hpsb_packet_success(struct hpsb_packet *packet);


/*
* The generic read, write and lock functions.  All recognize the local node ID
* and act accordingly.  Read and write automatically use quadlet commands if
* length == 4 and and block commands otherwise (however, they do not yet
* support lengths that are not a multiple of 4).  You must explicitly specifiy
* the generation for which the node ID is valid, to avoid sending packets to
* the wrong nodes when we race with a bus reset.
*/
int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
			  u64 addr, quadlet_t *buffer, size_t length);
int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
			   u64 addr, quadlet_t *buffer, size_t length);
int hpsb_lock(struct hpsb_host *host, nodeid_t node, unsigned int generation,
			  u64 addr, int extcode, quadlet_t *data, quadlet_t arg);
int hpsb_lock64(struct hpsb_host *host, nodeid_t node, unsigned int generation,
				u64 addr, int extcode, octlet_t *data, octlet_t arg);
int hpsb_send_gasp(struct hpsb_host *host, int channel, unsigned int generation,
                   quadlet_t *buffer, size_t length, u32 specifier_id,
                   unsigned int version);

#endif /* _IEEE1394_TRANSACTIONS_H */