ia64/xen-unstable

view tools/blktap/drivers/blktapctrl.h @ 15783:c93e2a822d6f

[xen, xencomm] xencomm multiple page support
Current implementation doesn't allow struct xencomm_desc::address
array to be more than single page. On IA64 it causes 64GB+ domain
creation failure. This patch generalizes xencomm to allow multipage

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author kfraser@localhost.localdomain
date Tue Aug 28 15:32:27 2007 +0100 (2007-08-28)
parents 4666710bfc55
children b01303f59872
line source
1 /* blktapctrl.h
2 *
3 * controller image utils.
4 *
5 * (c) 2004-6 Andrew Warfield and Julian Chesterfield
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation; or, when distributed
10 * separately from the Linux kernel or incorporated into other
11 * software packages, subject to the following license:
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a copy
14 * of this source file (the "Software"), to deal in the Software without
15 * restriction, including without limitation the rights to use, copy, modify,
16 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
17 * and to permit persons to whom the Software is furnished to do so, subject to
18 * the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included in
21 * all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29 * IN THE SOFTWARE.
30 */
33 static inline unsigned long long tapdisk_get_size(blkif_t *blkif)
34 {
35 image_t *img = (image_t *)blkif->prv;
36 return img->size;
37 }
39 static inline unsigned long tapdisk_get_secsize(blkif_t *blkif)
40 {
41 image_t *img = (image_t *)blkif->prv;
42 return img->secsize;
43 }
45 static inline unsigned int tapdisk_get_info(blkif_t *blkif)
46 {
47 image_t *img = (image_t *)blkif->prv;
48 return img->info;
49 }
51 struct blkif_ops tapdisk_ops = {
52 .get_size = tapdisk_get_size,
53 .get_secsize = tapdisk_get_secsize,
54 .get_info = tapdisk_get_info,
55 };