From cc570c92300692ce173ad22359f9a02f06f24eae Mon Sep 17 00:00:00 2001
From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Fri, 25 Jun 2010 18:37:00 +0000
Subject: [PATCH] Add kblock over a ram buffer wrapper.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3951 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/io/kblock_ram.c | 121 +++++++++++++++++++++++++++++++++++++++++
 bertos/io/kblock_ram.h |  56 +++++++++++++++++++
 2 files changed, 177 insertions(+)
 create mode 100644 bertos/io/kblock_ram.c
 create mode 100644 bertos/io/kblock_ram.h

diff --git a/bertos/io/kblock_ram.c b/bertos/io/kblock_ram.c
new file mode 100644
index 00000000..d5ffc907
--- /dev/null
+++ b/bertos/io/kblock_ram.c
@@ -0,0 +1,121 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ *
+ * \brief KBlock interface
+ */
+
+
+#include "kblock_ram.h"
+#include <string.h>
+
+
+int kblockram_load(KBlock *b, block_idx_t index)
+{
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	memcpy(r->b.priv.pagebuf, r->membuf + index * r->b.blk_size, r->b.blk_size);
+	return 0;
+}
+
+int kblockram_store(struct KBlock *b, block_idx_t index)
+{
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	memcpy(r->membuf + index * r->b.blk_size, r->b.priv.pagebuf, r->b.blk_size);
+	return 0;
+}
+
+size_t kblockram_readBuf(struct KBlock *b, void *buf, size_t offset, size_t size)
+{
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	memcpy(buf, (uint8_t *)r->b.priv.pagebuf + offset, size);
+	return size;
+}
+
+size_t kblockram_writeBuf(struct KBlock *b, const void *buf, size_t offset, size_t size)
+{
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	memcpy((uint8_t *)r->b.priv.pagebuf + offset, buf, size);
+	return size;
+}
+
+void * kblockram_map(struct KBlock *b, size_t offset, UNUSED_ARG(size_t, size))
+{
+	return (uint8_t *)b->priv.pagebuf + offset;
+}
+
+
+int kblockram_unmap(UNUSED_ARG(struct KBlock *, b), UNUSED_ARG(size_t, offset), UNUSED_ARG(size_t, size))
+{
+	return 0;
+}
+
+int kblockram_error(struct KBlock *b)
+{
+	return b->priv.flags;
+}
+
+int kblockram_dummy(UNUSED_ARG(struct KBlock *,b))
+{
+	return 0;
+}
+
+static const KBlockVTable kblockram_vt =
+{
+	.readBuf = kblockram_readBuf,
+	.writeBuf = kblockram_writeBuf,
+	.load = kblockram_load,
+	.store = kblockram_store,
+	.map = kblockram_map,
+	.unmap = kblockram_unmap,
+	.error = kblockram_error,
+	.clearerr = kblockram_dummy,
+	.close = kblockram_dummy,
+};
+
+void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size)
+{
+	ASSERT(buf);
+	ASSERT(size);
+	ASSERT(block_size);
+
+	memset(ram, 0, sizeof(*ram));
+	
+	// First page used as page buffer
+	ram->b.blk_cnt = (size / block_size) - 1;
+	ram->b.priv.pagebuf = buf;
+	ram->b.priv.pagebuf_size = block_size;
+	
+	ram->membuf = (uint8_t *)buf + block_size;
+	ram->b.blk_size = block_size;	
+	ram->b.vt = &kblockram_vt;
+}
diff --git a/bertos/io/kblock_ram.h b/bertos/io/kblock_ram.h
new file mode 100644
index 00000000..b003a601
--- /dev/null
+++ b/bertos/io/kblock_ram.h
@@ -0,0 +1,56 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ *
+ * \brief KBlock interface
+ */
+
+
+#include "kblock.h"
+
+
+typedef struct KBlockRam
+{
+	KBlock b;
+	uint8_t *membuf;
+} KBlockRam;
+
+#define KBT_KBLOCKRAM MAKE_ID('K', 'B', 'R', 'M')
+
+
+INLINE KBlockRam *KBLOCKRAM_CAST(KBlock *b)
+{
+	ASSERT(b->priv.type == KBT_KBLOCKRAM);
+	return (KBlockRam *)b;
+}
+
-- 
2.25.1