23#ifndef __XEN_BLKIF_H__
24#define __XEN_BLKIF_H__
26#include <contrib/xen/io/ring.h>
27#include <contrib/xen/io/blkif.h>
28#include <contrib/xen/io/protocols.h>
48 blkif_sector_t sector_number;
49 struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
65 uint64_t __attribute__((__aligned__(8))) id;
66 blkif_sector_t sector_number;
67 struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
70 uint64_t __attribute__((__aligned__(8))) id;
87#define BLKIF_MAX_RING_REQUESTS(_sz) \
88 MAX(__RING_SIZE((blkif_x86_64_sring_t *)NULL, _sz), \
89 MAX(__RING_SIZE((blkif_x86_32_sring_t *)NULL, _sz), \
90 __RING_SIZE((blkif_sring_t *)NULL, _sz)))
96#define BLKIF_RING_PAGES(_entries) \
97 MAX(__RING_PAGES((blkif_x86_64_sring_t *)NULL, _entries), \
98 MAX(__RING_PAGES((blkif_x86_32_sring_t *)NULL, _entries), \
99 __RING_PAGES((blkif_sring_t *)NULL, _entries)))
102 blkif_back_ring_t native;
103 blkif_common_back_ring_t common;
104 blkif_x86_32_back_ring_t x86_32;
105 blkif_x86_64_back_ring_t x86_64;
110 BLKIF_PROTOCOL_NATIVE = 1,
111 BLKIF_PROTOCOL_X86_32 = 2,
112 BLKIF_PROTOCOL_X86_64 = 3,
117 int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST;
118 dst->operation = src->operation;
119 dst->nr_segments = src->nr_segments;
120 dst->handle = src->handle;
122 dst->sector_number = src->sector_number;
124 if (n > dst->nr_segments)
125 n = dst->nr_segments;
126 for (i = 0; i < n; i++)
127 dst->seg[i] = src->seg[i];
132 int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST;
133 dst->operation = src->operation;
134 dst->nr_segments = src->nr_segments;
135 dst->handle = src->handle;
137 dst->sector_number = src->sector_number;
139 if (n > dst->nr_segments)
140 n = dst->nr_segments;
141 for (i = 0; i < n; i++)
142 dst->seg[i] = src->seg[i];