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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>
This commit is contained in:
Simon Glass 2016-02-29 15:25:39 -07:00
parent 481922f14a
commit 1a73661bc7
3 changed files with 74 additions and 58 deletions
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71
include/blk.h Normal file
View File

@ -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

12
include/ide.h
View File

@ -8,6 +8,8 @@
#ifndef _IDE_H
#define _IDE_H
#include <blk.h>
#define IDE_BUS(dev) (dev / (CONFIG_SYS_IDE_MAXDEVICE / CONFIG_SYS_IDE_MAXBUS))
#define ATA_CURR_BASE(dev) (CONFIG_SYS_ATA_BASE_ADDR+ide_bus_offset[IDE_BUS(dev)])
@ -26,16 +28,6 @@ extern ulong ide_bus_offset[];
void ide_led(uchar led, uchar status);
#endif /* CONFIG_IDE_LED */
#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"
/*
* Function Prototypes
*/

49
include/part.h
View File

@ -7,61 +7,14 @@
#ifndef _PART_H
#define _PART_H
#include <blk.h>
#include <ide.h>
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
unsigned char lba48; /* device can use 48bit addr (ATA/ATAPI v7) */
#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))
#define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \
((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \
((x & 0xffff0000) ? 16 : 0))
#define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1))
/* 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 */
/* Part types */
#define PART_TYPE_UNKNOWN 0x00
#define PART_TYPE_MAC 0x01