4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
33 * \author Francesco Sacchi <batt@develer.com>
35 * \brief KBlock interface
43 static void *kblock_swMap(struct KBlock *b, size_t offset, size_t size)
45 return (kblock_readBuf(b, b->priv.pagebuf, offset, size) == size) ? b->priv.pagebuf : NULL;
49 static int kblock_swUnmap(struct KBlock *b, size_t offset, size_t size)
51 return (kblock_writeBuf(b, b->priv.pagebuf, offset, size) == size) ? 0 : EOF;
55 void *kblock_unsupportedMap(struct KBlock *b, UNUSED_ARG(size_t, offset), UNUSED_ARG(size_t, size))
57 LOG_WARN("This driver does not support block mapping: use kblock_addMapping() to add generic mapping functionality.\n");
58 b->priv.flags |= BV(KBS_ERR_MAP_NOT_AVAILABLE);
62 void kblock_addMapping(struct KBlock *dev, void *buf, size_t size)
68 dev->vt->map = kblock_swMap;
69 dev->vt->unmap = kblock_swUnmap;
71 dev->priv.pagebuf = buf;
72 dev->priv.pagebuf_size = size;