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 enum if_type {
  23         IF_TYPE_UNKNOWN = 0,
  24         IF_TYPE_IDE,
  25         IF_TYPE_SCSI,
  26         IF_TYPE_ATAPI,
  27         IF_TYPE_USB,
  28         IF_TYPE_DOC,
  29         IF_TYPE_MMC,
  30         IF_TYPE_SD,
  31         IF_TYPE_SATA,
  32         IF_TYPE_HOST,
  33
  34         IF_TYPE_COUNT,                  /* Number of interface types */
  35 };
  36
  37 struct blk_desc {
  38         enum if_type    if_type;        /* type of the interface */
  39         int             dev;            /* device number */
  40         unsigned char   part_type;      /* partition type */
  41         unsigned char   target;         /* target SCSI ID */
  42         unsigned char   lun;            /* target LUN */
  43         unsigned char   hwpart;         /* HW partition, e.g. for eMMC */
  44         unsigned char   type;           /* device type */
  45         unsigned char   removable;      /* removable device */
  46 #ifdef CONFIG_LBA48
  47         /* device can use 48bit addr (ATA/ATAPI v7) */
  48         unsigned char   lba48;
  49 #endif
  50         lbaint_t        lba;            /* number of blocks */
  51         unsigned long   blksz;          /* block size */
  52         int             log2blksz;      /* for convenience: log2(blksz) */
  53         char            vendor[40+1];   /* IDE model, SCSI Vendor */
  54         char            product[20+1];  /* IDE Serial no, SCSI product */
  55         char            revision[8+1];  /* firmware revision */
  56         unsigned long   (*block_read)(struct blk_desc *block_dev,
  57                                       lbaint_t start,
  58                                       lbaint_t blkcnt,
  59                                       void *buffer);
  60         unsigned long   (*block_write)(struct blk_desc *block_dev,
  61                                        lbaint_t start,
  62                                        lbaint_t blkcnt,
  63                                        const void *buffer);
  64         unsigned long   (*block_erase)(struct blk_desc *block_dev,
  65                                        lbaint_t start,
  66                                        lbaint_t blkcnt);
  67         void            *priv;          /* driver private struct pointer */
  68 };
  69
  70 #define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
  71 #define PAD_TO_BLOCKSIZE(size, blk_desc) \
  72         (PAD_SIZE(size, blk_desc->blksz))
  73
  74 #endif