blockdev.h

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#ifndef _IPXE_BLOCKDEV_H
#define _IPXE_BLOCKDEV_H

/**
 * @file
 *
 * Block devices
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include <stdint.h>
#include <ipxe/uaccess.h>
#include <ipxe/interface.h>

/** Block device capacity */
struct block_device_capacity {
        /** Total number of blocks */
        uint64_t blocks;
        /** Block size */
        size_t blksize;
        /** Maximum number of blocks per single transfer */
        unsigned int max_count;
};

extern int block_read ( struct interface *control, struct interface *data,
                        uint64_t lba, unsigned int count,
                        userptr_t buffer, size_t len );
#define block_read_TYPE( object_type )                                  \
        typeof ( int ( object_type, struct interface *data,             \
                       uint64_t lba, unsigned int count,                \
                       userptr_t buffer, size_t len ) )

extern int block_write ( struct interface *control, struct interface *data,
                         uint64_t lba, unsigned int count,
                         userptr_t buffer, size_t len );
#define block_write_TYPE( object_type )                                 \
        typeof ( int ( object_type, struct interface *data,             \
                       uint64_t lba, unsigned int count,                \
                       userptr_t buffer, size_t len ) )

extern int block_read_capacity ( struct interface *control,
                                 struct interface *data );
#define block_read_capacity_TYPE( object_type )                         \
        typeof ( int ( object_type, struct interface *data ) )

extern void block_capacity ( struct interface *intf,
                             struct block_device_capacity *capacity );
#define block_capacity_TYPE( object_type )                              \
        typeof ( void ( object_type,                                    \
                        struct block_device_capacity *capacity ) )


#endif /* _IPXE_BLOCKDEV_H */