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#ifndef _IPXE_EFI_UACCESS_H
#define _IPXE_EFI_UACCESS_H
/** @file
*
* iPXE user access API for EFI
*
* EFI runs with flat physical addressing, so the various mappings
* between virtual addresses, I/O addresses and bus addresses are all
* no-ops.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#ifdef UACCESS_EFI
#define UACCESS_PREFIX_efi
#else
#define UACCESS_PREFIX_efi __efi_
#endif
/**
* Convert physical address to user pointer
*
* @v phys_addr Physical address
* @ret userptr User pointer
*/
static inline __always_inline userptr_t
UACCESS_INLINE ( efi, phys_to_user ) ( unsigned long phys_addr ) {
return phys_addr;
}
/**
* Convert user buffer to physical address
*
* @v userptr User pointer
* @v offset Offset from user pointer
* @ret phys_addr Physical address
*/
static inline __always_inline unsigned long
UACCESS_INLINE ( efi, user_to_phys ) ( userptr_t userptr, off_t offset ) {
return ( userptr + offset );
}
static inline __always_inline userptr_t
UACCESS_INLINE ( efi, virt_to_user ) ( volatile const void *addr ) {
return trivial_virt_to_user ( addr );
}
static inline __always_inline void *
UACCESS_INLINE ( efi, user_to_virt ) ( userptr_t userptr, off_t offset ) {
return trivial_user_to_virt ( userptr, offset );
}
static inline __always_inline userptr_t
UACCESS_INLINE ( efi, userptr_add ) ( userptr_t userptr, off_t offset ) {
return trivial_userptr_add ( userptr, offset );
}
static inline __always_inline off_t
UACCESS_INLINE ( efi, userptr_sub ) ( userptr_t userptr,
userptr_t subtrahend ) {
return trivial_userptr_sub ( userptr, subtrahend );
}
static inline __always_inline void
UACCESS_INLINE ( efi, memcpy_user ) ( userptr_t dest, off_t dest_off,
userptr_t src, off_t src_off,
size_t len ) {
trivial_memcpy_user ( dest, dest_off, src, src_off, len );
}
static inline __always_inline void
UACCESS_INLINE ( efi, memmove_user ) ( userptr_t dest, off_t dest_off,
userptr_t src, off_t src_off,
size_t len ) {
trivial_memmove_user ( dest, dest_off, src, src_off, len );
}
static inline __always_inline int
UACCESS_INLINE ( efi, memcmp_user ) ( userptr_t first, off_t first_off,
userptr_t second, off_t second_off,
size_t len ) {
return trivial_memcmp_user ( first, first_off, second, second_off, len);
}
static inline __always_inline void
UACCESS_INLINE ( efi, memset_user ) ( userptr_t buffer, off_t offset,
int c, size_t len ) {
trivial_memset_user ( buffer, offset, c, len );
}
static inline __always_inline size_t
UACCESS_INLINE ( efi, strlen_user ) ( userptr_t buffer, off_t offset ) {
return trivial_strlen_user ( buffer, offset );
}
static inline __always_inline off_t
UACCESS_INLINE ( efi, memchr_user ) ( userptr_t buffer, off_t offset,
int c, size_t len ) {
return trivial_memchr_user ( buffer, offset, c, len );
}
#endif /* _IPXE_EFI_UACCESS_H */
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