X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fio%2Fkblock_ram.c;h=b936e90236d7b69f3c736fac2eca28ccc224c2f9;hb=e8b0472be10fba4ca6baa62d8d483db90e28c06e;hp=d5ffc9078441cb5d0963e4a49b53ed766a8bff12;hpb=cc570c92300692ce173ad22359f9a02f06f24eae;p=bertos.git

diff --git a/bertos/io/kblock_ram.c b/bertos/io/kblock_ram.c
index d5ffc907..b936e902 100644
--- a/bertos/io/kblock_ram.c
+++ b/bertos/io/kblock_ram.c
@@ -26,13 +26,18 @@
  * 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/)
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
  *
  * -->
  *
  * \author Francesco Sacchi <batt@develer.com>
  *
- * \brief KBlock interface
+ * \brief KBlock interface on RAM memory
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ *
+ * $WIZ$ module_name = "kfile_ram"
+ * $WIZ$ module_depends = "kblock"
  */
 
 
@@ -40,82 +45,127 @@
 #include <string.h>
 
 
-int kblockram_load(KBlock *b, block_idx_t index)
+static 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);
+	memcpy(r->b.priv.buf, r->membuf + index * r->b.blk_size, r->b.blk_size);
 	return 0;
 }
 
-int kblockram_store(struct KBlock *b, block_idx_t index)
+static 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);
+	memcpy(r->membuf + index * r->b.blk_size, r->b.priv.buf, r->b.blk_size);
 	return 0;
 }
 
-size_t kblockram_readBuf(struct KBlock *b, void *buf, size_t offset, size_t size)
+static 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);
+	memcpy(buf, (uint8_t *)r->b.priv.buf + offset, size);
 	return size;
 }
 
-size_t kblockram_writeBuf(struct KBlock *b, const void *buf, size_t offset, size_t size)
+static size_t kblockram_readDirect(struct KBlock *b, block_idx_t index, void *buf, size_t offset, size_t size)
 {
 	KBlockRam *r = KBLOCKRAM_CAST(b);
-	memcpy((uint8_t *)r->b.priv.pagebuf + offset, buf, size);
+	memcpy(buf, r->membuf + index * r->b.blk_size + offset, size);
 	return size;
 }
 
-void * kblockram_map(struct KBlock *b, size_t offset, UNUSED_ARG(size_t, size))
+static size_t kblockram_writeBuf(struct KBlock *b, const void *buf, size_t offset, size_t size)
 {
-	return (uint8_t *)b->priv.pagebuf + offset;
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	memcpy((uint8_t *)r->b.priv.buf + offset, buf, size);
+	return size;
 }
 
-
-int kblockram_unmap(UNUSED_ARG(struct KBlock *, b), UNUSED_ARG(size_t, offset), UNUSED_ARG(size_t, size))
+static size_t kblockram_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size)
 {
-	return 0;
-}
+	KBlockRam *r = KBLOCKRAM_CAST(b);
+	ASSERT(buf);
+	ASSERT(index < b->blk_cnt);
 
-int kblockram_error(struct KBlock *b)
-{
-	return b->priv.flags;
+	memcpy(r->membuf + index * r->b.blk_size + offset, buf, size);
+	return size;
 }
 
-int kblockram_dummy(UNUSED_ARG(struct KBlock *,b))
+static int kblockram_dummy(UNUSED_ARG(struct KBlock *,b))
 {
 	return 0;
 }
 
-static const KBlockVTable kblockram_vt =
+static const KBlockVTable kblockram_hwbuffered_vt =
 {
+	.readDirect = kblockram_readDirect,
+
 	.readBuf = kblockram_readBuf,
 	.writeBuf = kblockram_writeBuf,
 	.load = kblockram_load,
 	.store = kblockram_store,
-	.map = kblockram_map,
-	.unmap = kblockram_unmap,
-	.error = kblockram_error,
-	.clearerr = kblockram_dummy,
+
+	.error = kblockram_dummy,
+	.clearerr = (kblock_clearerr_t)kblockram_dummy,
+	.close = kblockram_dummy,
+};
+
+
+static const KBlockVTable kblockram_swbuffered_vt =
+{
+	.readDirect = kblockram_readDirect,
+	.writeDirect = kblockram_writeDirect,
+
+	.readBuf = kblock_swReadBuf,
+	.writeBuf = kblock_swWriteBuf,
+	.load = kblock_swLoad,
+	.store = kblock_swStore,
+
+	.error = kblockram_dummy,
+	.clearerr = (kblock_clearerr_t)kblockram_dummy,
 	.close = kblockram_dummy,
 };
 
-void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size)
+static const KBlockVTable kblockram_unbuffered_vt =
+{
+	.readDirect = kblockram_readDirect,
+	.writeDirect = kblockram_writeDirect,
+
+	.error = kblockram_dummy,
+	.clearerr = (kblock_clearerr_t)kblockram_dummy,
+	.close = kblockram_dummy,
+};
+
+void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size, bool buffered, bool hwbuffered)
 {
 	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;
+
+	DB(ram->b.priv.type = KBT_KBLOCKRAM);
+	ram->b.blk_size = block_size;
+	ram->b.priv.flags |= KB_PARTIAL_WRITE;
+
+	if (buffered)
+	{
+		ram->b.priv.flags |= KB_BUFFERED;
+		ram->b.blk_cnt = (size / block_size) - 1;
+		ram->b.priv.buf = buf;
+		// First page used as page buffer
+		ram->membuf = (uint8_t *)buf + block_size;
+
+		if (hwbuffered)
+			ram->b.priv.vt = &kblockram_hwbuffered_vt;
+		else
+			ram->b.priv.vt = &kblockram_swbuffered_vt;
+
+		kblockram_load(&ram->b, 0);
+	}
+	else
+	{
+		ram->b.blk_cnt = (size / block_size);
+		ram->membuf = (uint8_t *)buf;
+		ram->b.priv.vt = &kblockram_unbuffered_vt;
+	}
 }