dm: Add a new header for block devices

At present block devices are tied up with partitions. But not all block
devices have partitions within them. They are in fact separate concepts.

Create a separate blk.h header file for block devices.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/include/blk.h b/include/blk.h
new file mode 100644
index 00000000000..1e8334c23a4
--- /dev/null
+++ b/include/blk.h
@@ -0,0 +1,71 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef BLK_H
+#define BLK_H
+
+#ifdef CONFIG_SYS_64BIT_LBA
+typedef uint64_t lbaint_t;
+#define LBAFlength "ll"
+#else
+typedef ulong lbaint_t;
+#define LBAFlength "l"
+#endif
+#define LBAF "%" LBAFlength "x"
+#define LBAFU "%" LBAFlength "u"
+
+/* Interface types: */
+#define IF_TYPE_UNKNOWN		0
+#define IF_TYPE_IDE		1
+#define IF_TYPE_SCSI		2
+#define IF_TYPE_ATAPI		3
+#define IF_TYPE_USB		4
+#define IF_TYPE_DOC		5
+#define IF_TYPE_MMC		6
+#define IF_TYPE_SD		7
+#define IF_TYPE_SATA		8
+#define IF_TYPE_HOST		9
+#define IF_TYPE_MAX		10	/* Max number of IF_TYPE_* supported */
+
+struct blk_desc {
+	int		if_type;	/* type of the interface */
+	int		dev;		/* device number */
+	unsigned char	part_type;	/* partition type */
+	unsigned char	target;		/* target SCSI ID */
+	unsigned char	lun;		/* target LUN */
+	unsigned char	hwpart;		/* HW partition, e.g. for eMMC */
+	unsigned char	type;		/* device type */
+	unsigned char	removable;	/* removable device */
+#ifdef CONFIG_LBA48
+	/* device can use 48bit addr (ATA/ATAPI v7) */
+	unsigned char	lba48;
+#endif
+	lbaint_t	lba;		/* number of blocks */
+	unsigned long	blksz;		/* block size */
+	int		log2blksz;	/* for convenience: log2(blksz) */
+	char		vendor[40+1];	/* IDE model, SCSI Vendor */
+	char		product[20+1];	/* IDE Serial no, SCSI product */
+	char		revision[8+1];	/* firmware revision */
+	unsigned long	(*block_read)(struct blk_desc *block_dev,
+				      lbaint_t start,
+				      lbaint_t blkcnt,
+				      void *buffer);
+	unsigned long	(*block_write)(struct blk_desc *block_dev,
+				       lbaint_t start,
+				       lbaint_t blkcnt,
+				       const void *buffer);
+	unsigned long	(*block_erase)(struct blk_desc *block_dev,
+				       lbaint_t start,
+				       lbaint_t blkcnt);
+	void		*priv;		/* driver private struct pointer */
+};
+
+#define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
+#define PAD_TO_BLOCKSIZE(size, blk_desc) \
+	(PAD_SIZE(size, blk_desc->blksz))
+
+#endif