block: Add a simple block layer

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/block/block.c b/src/block/block.c
new file mode 100644
index 0000000..d4758f5
--- /dev/null
+++ b/src/block/block.c
@@ -0,0 +1,44 @@
+#include <toxic/config.h>
+#include <toxic/string.h>
+#include <block/block.h>
+#include <ata/ata.h>
+
+/*
+ * Only primary ATA disk is supported by now, just
+ * hardcode it here.
+ */
+struct bdev hda;
+
+/* Init block layer */
+void
+block_init()
+{
+	memset(&hda, 0, sizeof(struct bdev));
+	hda.id = TOXIC_HDA_0;
+	hda.sector_size = SECTOR_SIZE;
+}
+
+struct bdev *
+bdev_get(int id)
+{
+	/* Just a single bdev is supported */
+	if (id)
+		return NULL;
+
+	return &hda;
+}
+
+/* Read len bytes from bdev starting at addr into buf*/
+int
+bread(
+	struct bdev *bdev,
+	unsigned int addr,
+	unsigned int len,
+	void *buf)
+{
+	/*
+	 * XXX: This should be a function call into the disk driver.
+	 *	i.e. bdev->read(),  or something like that
+	 */
+	return ata_read_sector(addr, len, buf);
+}