qemu/roms/ipxe/src/include/ipxe/blockdev.h

   1 #ifndef _IPXE_BLOCKDEV_H
   2 #define _IPXE_BLOCKDEV_H
   3
   4 /**
   5  * @file
   6  *
   7  * Block devices
   8  *
   9  */
  10
  11 FILE_LICENCE ( GPL2_OR_LATER );
  12
  13 #include <stdint.h>
  14 #include <ipxe/uaccess.h>
  15 #include <ipxe/interface.h>
  16
  17 /** Block device capacity */
  18 struct block_device_capacity {
  19         /** Total number of blocks */
  20         uint64_t blocks;
  21         /** Block size */
  22         size_t blksize;
  23         /** Maximum number of blocks per single transfer */
  24         unsigned int max_count;
  25 };
  26
  27 extern int block_read ( struct interface *control, struct interface *data,
  28                         uint64_t lba, unsigned int count,
  29                         userptr_t buffer, size_t len );
  30 #define block_read_TYPE( object_type )                                  \
  31         typeof ( int ( object_type, struct interface *data,             \
  32                        uint64_t lba, unsigned int count,                \
  33                        userptr_t buffer, size_t len ) )
  34
  35 extern int block_write ( struct interface *control, struct interface *data,
  36                          uint64_t lba, unsigned int count,
  37                          userptr_t buffer, size_t len );
  38 #define block_write_TYPE( object_type )                                 \
  39         typeof ( int ( object_type, struct interface *data,             \
  40                        uint64_t lba, unsigned int count,                \
  41                        userptr_t buffer, size_t len ) )
  42
  43 extern int block_read_capacity ( struct interface *control,
  44                                  struct interface *data );
  45 #define block_read_capacity_TYPE( object_type )                         \
  46         typeof ( int ( object_type, struct interface *data ) )
  47
  48 extern void block_capacity ( struct interface *intf,
  49                              struct block_device_capacity *capacity );
  50 #define block_capacity_TYPE( object_type )                              \
  51         typeof ( void ( object_type,                                    \
  52                         struct block_device_capacity *capacity ) )
  53
  54
  55 #endif /* _IPXE_BLOCKDEV_H */