Viewing file:  ieee1394_transactions.h (3.6 KB) -rw-r--r--
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#ifndef _IEEE1394_TRANSACTIONS_H
#define _IEEE1394_TRANSACTIONS_H
#include "ieee1394_core.h"
/*
* Utility functions to fill out packet headers.
*/
void fill_async_readquad(struct hpsb_packet *packet, u64 addr);
void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
quadlet_t data);
void fill_async_readblock(struct hpsb_packet *packet, u64 addr, int length);
void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
int length);
void fill_async_writequad(struct hpsb_packet *packet, u64 addr, quadlet_t data);
void fill_async_writeblock(struct hpsb_packet *packet, u64 addr, int length);
void fill_async_write_resp(struct hpsb_packet *packet, int rcode);
void fill_async_lock(struct hpsb_packet *packet, u64 addr, int extcode,
int length);
void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
int length);
void fill_iso_packet(struct hpsb_packet *packet, int length, int channel,
int tag, int sync);
void fill_phy_packet(struct hpsb_packet *packet, quadlet_t data);
/*
* Get and free transaction labels.
*/
int get_tlabel(struct hpsb_host *host, nodeid_t nodeid, int wait);
void free_tlabel(struct hpsb_host *host, nodeid_t nodeid, int tlabel);
struct hpsb_packet *hpsb_make_readqpacket(struct hpsb_host *host, nodeid_t node,
u64 addr);
struct hpsb_packet *hpsb_make_readbpacket(struct hpsb_host *host, nodeid_t node,
u64 addr, size_t length);
struct hpsb_packet *hpsb_make_writeqpacket(struct hpsb_host *host,
nodeid_t node, u64 addr,
quadlet_t data);
struct hpsb_packet *hpsb_make_writebpacket(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);
struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host,
quadlet_t data) ;
/*
* 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).
*/
int hpsb_read(struct hpsb_host *host, nodeid_t node, u64 addr,
quadlet_t *buffer, size_t length);
int hpsb_write(struct hpsb_host *host, nodeid_t node, u64 addr,
quadlet_t *buffer, size_t length);
int hpsb_lock(struct hpsb_host *host, nodeid_t node, u64 addr, int extcode,
quadlet_t *data, quadlet_t arg);
/* Generic packet creation. Used by hpsb_write. Also useful for protocol
* drivers that want to implement their own hpsb_write replacement. */
struct hpsb_packet *hpsb_make_packet (struct hpsb_host *host, nodeid_t node,
u64 addr, quadlet_t *buffer, size_t length);
#endif /* _IEEE1394_TRANSACTIONS_H */
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