forked from Minki/linux
58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
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#ifndef _IEEE1394_TRANSACTIONS_H
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#define _IEEE1394_TRANSACTIONS_H
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#include "ieee1394_core.h"
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/*
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* Get and free transaction labels.
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*/
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int hpsb_get_tlabel(struct hpsb_packet *packet);
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void hpsb_free_tlabel(struct hpsb_packet *packet);
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struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node,
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u64 addr, size_t length);
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struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node,
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u64 addr, int extcode, quadlet_t *data,
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quadlet_t arg);
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struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, nodeid_t node,
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u64 addr, int extcode, octlet_t *data,
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octlet_t arg);
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struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host,
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quadlet_t data) ;
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struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host,
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int length, int channel,
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int tag, int sync);
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struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node,
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u64 addr, quadlet_t *buffer, size_t length);
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struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer,
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int length, int channel, int tag, int sync);
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/*
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* hpsb_packet_success - Make sense of the ack and reply codes and
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* return more convenient error codes:
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* 0 success
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* -EBUSY node is busy, try again
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* -EAGAIN error which can probably resolved by retry
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* -EREMOTEIO node suffers from an internal error
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* -EACCES this transaction is not allowed on requested address
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* -EINVAL invalid address at node
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*/
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int hpsb_packet_success(struct hpsb_packet *packet);
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/*
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* The generic read, write and lock functions. All recognize the local node ID
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* and act accordingly. Read and write automatically use quadlet commands if
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* length == 4 and and block commands otherwise (however, they do not yet
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* support lengths that are not a multiple of 4). You must explicitly specifiy
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* the generation for which the node ID is valid, to avoid sending packets to
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* the wrong nodes when we race with a bus reset.
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*/
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int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
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u64 addr, quadlet_t *buffer, size_t length);
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int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
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u64 addr, quadlet_t *buffer, size_t length);
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#endif /* _IEEE1394_TRANSACTIONS_H */
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