include/blk.h

   1 /*
   2  * (C) Copyright 2000-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef BLK_H
   9 #define BLK_H
  10
  11 #ifdef CONFIG_SYS_64BIT_LBA
  12 typedef uint64_t lbaint_t;
  13 #define LBAFlength "ll"
  14 #else
  15 typedef ulong lbaint_t;
  16 #define LBAFlength "l"
  17 #endif
  18 #define LBAF "%" LBAFlength "x"
  19 #define LBAFU "%" LBAFlength "u"
  20
  21 /* Interface types: */
  22 #define IF_TYPE_UNKNOWN         0
  23 #define IF_TYPE_IDE             1
  24 #define IF_TYPE_SCSI            2
  25 #define IF_TYPE_ATAPI           3
  26 #define IF_TYPE_USB             4
  27 #define IF_TYPE_DOC             5
  28 #define IF_TYPE_MMC             6
  29 #define IF_TYPE_SD              7
  30 #define IF_TYPE_SATA            8
  31 #define IF_TYPE_HOST            9
  32 #define IF_TYPE_MAX             10      /* Max number of IF_TYPE_* supported */
  33
  34 struct blk_desc {
  35         int             if_type;        /* type of the interface */
  36         int             dev;            /* device number */
  37         unsigned char   part_type;      /* partition type */
  38         unsigned char   target;         /* target SCSI ID */
  39         unsigned char   lun;            /* target LUN */
  40         unsigned char   hwpart;         /* HW partition, e.g. for eMMC */
  41         unsigned char   type;           /* device type */
  42         unsigned char   removable;      /* removable device */
  43 #ifdef CONFIG_LBA48
  44         /* device can use 48bit addr (ATA/ATAPI v7) */
  45         unsigned char   lba48;
  46 #endif
  47         lbaint_t        lba;            /* number of blocks */
  48         unsigned long   blksz;          /* block size */
  49         int             log2blksz;      /* for convenience: log2(blksz) */
  50         char            vendor[40+1];   /* IDE model, SCSI Vendor */
  51         char            product[20+1];  /* IDE Serial no, SCSI product */
  52         char            revision[8+1];  /* firmware revision */
  53         unsigned long   (*block_read)(struct blk_desc *block_dev,
  54                                       lbaint_t start,
  55                                       lbaint_t blkcnt,
  56                                       void *buffer);
  57         unsigned long   (*block_write)(struct blk_desc *block_dev,
  58                                        lbaint_t start,
  59                                        lbaint_t blkcnt,
  60                                        const void *buffer);
  61         unsigned long   (*block_erase)(struct blk_desc *block_dev,
  62                                        lbaint_t start,
  63                                        lbaint_t blkcnt);
  64         void            *priv;          /* driver private struct pointer */
  65 };
  66
  67 #define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
  68 #define PAD_TO_BLOCKSIZE(size, blk_desc) \
  69         (PAD_SIZE(size, blk_desc->blksz))
  70
  71 #endif