1 #ifndef _IEEE1394_TRANSACTIONS_H
2 #define _IEEE1394_TRANSACTIONS_H
3
4 #include "ieee1394_core.h"
5
6
7 /*
8 * Utility functions to fill out packet headers.
9 */
10 void fill_async_readquad(struct hpsb_packet *packet, u64 addr);
11 void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
12 quadlet_t data);
13 void fill_async_readblock(struct hpsb_packet *packet, u64 addr, int length);
14 void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
15 int length);
16 void fill_async_writequad(struct hpsb_packet *packet, u64 addr, quadlet_t data);
17 void fill_async_writeblock(struct hpsb_packet *packet, u64 addr, int length);
18 void fill_async_write_resp(struct hpsb_packet *packet, int rcode);
19 void fill_async_lock(struct hpsb_packet *packet, u64 addr, int extcode,
20 int length);
21 void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
22 int length);
23 void fill_iso_packet(struct hpsb_packet *packet, int length, int channel,
24 int tag, int sync);
25
26 /*
27 * Get and free transaction labels.
28 */
29 int get_tlabel(struct hpsb_host *host, nodeid_t nodeid, int wait);
30 void free_tlabel(struct hpsb_host *host, nodeid_t nodeid, int tlabel);
31
32 struct hpsb_packet *hpsb_make_readqpacket(struct hpsb_host *host, nodeid_t node,
33 u64 addr);
34 struct hpsb_packet *hpsb_make_readbpacket(struct hpsb_host *host, nodeid_t node,
35 u64 addr, size_t length);
36 struct hpsb_packet *hpsb_make_writeqpacket(struct hpsb_host *host,
37 nodeid_t node, u64 addr,
38 quadlet_t data);
39 struct hpsb_packet *hpsb_make_writebpacket(struct hpsb_host *host,
40 nodeid_t node, u64 addr,
41 size_t length);
42 struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node,
43 u64 addr, int extcode);
44
45
46 /*
47 * hpsb_packet_success - Make sense of the ack and reply codes and
48 * return more convenient error codes:
49 * 0 success
50 * -EBUSY node is busy, try again
51 * -EAGAIN error which can probably resolved by retry
52 * -EREMOTEIO node suffers from an internal error
53 * -EACCES this transaction is not allowed on requested address
54 * -EINVAL invalid address at node
55 */
56 int hpsb_packet_success(struct hpsb_packet *packet);
57
58
59 /*
60 * The generic read, write and lock functions. All recognize the local node ID
61 * and act accordingly. Read and write automatically use quadlet commands if
62 * length == 4 and and block commands otherwise (however, they do not yet
63 * support lengths that are not a multiple of 4).
64 */
65 int hpsb_read(struct hpsb_host *host, nodeid_t node, u64 addr,
66 quadlet_t *buffer, size_t length);
67 int hpsb_write(struct hpsb_host *host, nodeid_t node, u64 addr,
68 quadlet_t *buffer, size_t length);
69 int hpsb_lock(struct hpsb_host *host, nodeid_t node, u64 addr, int extcode,
70 quadlet_t *data, quadlet_t arg);
71
72 #endif /* _IEEE1394_TRANSACTIONS_H */
73
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