Add support for devices which can partial write a block.

[bertos.git] / bertos / io / kblock_ram.c

diff --git a/bertos/io/kblock_ram.c b/bertos/io/kblock_ram.c
index eff9675f721d30f9f34f61537518e21b36d68cfb..e3780d7d92777a7b8fc3ba2aab7c6223e2d6c8d9 100644 (file)
--- a/bertos/io/kblock_ram.c
+++ b/bertos/io/kblock_ram.c
@@ -75,14 +75,14 @@ static size_t kblockram_writeBuf(struct KBlock *b, const void *buf, size_t offse
        return size;
 }
 
-static int kblockram_writeBlock(struct KBlock *b, block_idx_t index, const void *buf)
+static size_t kblockram_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size)
 {
        KBlockRam *r = KBLOCKRAM_CAST(b);
        ASSERT(buf);
        ASSERT(index < b->blk_cnt);
 
-       memcpy(r->membuf + index * r->b.blk_size, buf, r->b.blk_size);
-       return 0;
+       memcpy(r->membuf + index * r->b.blk_size + offset, buf, size);
+       return size;
 }
 
 static int kblockram_dummy(UNUSED_ARG(struct KBlock *,b))
@@ -93,12 +93,12 @@ static int kblockram_dummy(UNUSED_ARG(struct KBlock *,b))
 static const KBlockVTable kblockram_hwbuffered_vt =
 {
        .readDirect = kblockram_readDirect,
-       
+
        .readBuf = kblockram_readBuf,
        .writeBuf = kblockram_writeBuf,
        .load = kblockram_load,
        .store = kblockram_store,
-       
+
        .error = kblockram_dummy,
        .clearerr = kblockram_dummy,
        .close = kblockram_dummy,
@@ -108,13 +108,13 @@ static const KBlockVTable kblockram_hwbuffered_vt =
 static const KBlockVTable kblockram_swbuffered_vt =
 {
        .readDirect = kblockram_readDirect,
-       .writeBlock = kblockram_writeBlock,
-       
+       .writeDirect = kblockram_writeDirect,
+
        .readBuf = kblock_swReadBuf,
        .writeBuf = kblock_swWriteBuf,
        .load = kblock_swLoad,
        .store = kblock_swStore,
-               
+
        .error = kblockram_dummy,
        .clearerr = kblockram_dummy,
        .close = kblockram_dummy,
@@ -123,7 +123,7 @@ static const KBlockVTable kblockram_swbuffered_vt =
 static const KBlockVTable kblockram_unbuffered_vt =
 {
        .readDirect = kblockram_readDirect,
-       .writeBlock = kblockram_writeBlock,
+       .writeDirect = kblockram_writeDirect,
 
        .error = kblockram_dummy,
        .clearerr = kblockram_dummy,
@@ -140,7 +140,8 @@ void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size, b
 
        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;
@@ -148,12 +149,12 @@ void kblockram_init(KBlockRam *ram, void *buf, size_t size, size_t block_size, b
                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