ia64/linux-2.6.18-xen.hg

view drivers/ieee1394/ieee1394_transactions.h @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
1 #ifndef _IEEE1394_TRANSACTIONS_H
2 #define _IEEE1394_TRANSACTIONS_H
4 #include "ieee1394_core.h"
7 /*
8 * Get and free transaction labels.
9 */
10 int hpsb_get_tlabel(struct hpsb_packet *packet);
11 void hpsb_free_tlabel(struct hpsb_packet *packet);
13 struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node,
14 u64 addr, size_t length);
15 struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node,
16 u64 addr, int extcode, quadlet_t *data,
17 quadlet_t arg);
18 struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, nodeid_t node,
19 u64 addr, int extcode, octlet_t *data,
20 octlet_t arg);
21 struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host,
22 quadlet_t data) ;
23 struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host,
24 int length, int channel,
25 int tag, int sync);
26 struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node,
27 u64 addr, quadlet_t *buffer, size_t length);
28 struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer,
29 int length, int channel, int tag, int sync);
31 /*
32 * hpsb_packet_success - Make sense of the ack and reply codes and
33 * return more convenient error codes:
34 * 0 success
35 * -EBUSY node is busy, try again
36 * -EAGAIN error which can probably resolved by retry
37 * -EREMOTEIO node suffers from an internal error
38 * -EACCES this transaction is not allowed on requested address
39 * -EINVAL invalid address at node
40 */
41 int hpsb_packet_success(struct hpsb_packet *packet);
44 /*
45 * The generic read, write and lock functions. All recognize the local node ID
46 * and act accordingly. Read and write automatically use quadlet commands if
47 * length == 4 and and block commands otherwise (however, they do not yet
48 * support lengths that are not a multiple of 4). You must explicitly specifiy
49 * the generation for which the node ID is valid, to avoid sending packets to
50 * the wrong nodes when we race with a bus reset.
51 */
52 int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
53 u64 addr, quadlet_t *buffer, size_t length);
54 int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
55 u64 addr, quadlet_t *buffer, size_t length);
57 #endif /* _IEEE1394_TRANSACTIONS_H */