uaccess.h File Reference

Access to external ("user") memory. More...

#include <stdint.h>
#include <ipxe/api.h>
#include <config/ioapi.h>
#include <ipxe/virt_offset.h>
#include <ipxe/linux/linux_uaccess.h>
#include <bits/uaccess.h>

Go to the source code of this file.

Macros
#define	UACCESS_PREFIX_flat   __flat_
#define	UACCESS_INLINE(_subsys, _api_func)
	Calculate static inline user access API function name.
#define	PROVIDE_UACCESS(_subsys, _api_func, _func)
	Provide an user access API implementation.
#define	PROVIDE_UACCESS_INLINE(_subsys, _api_func)
	Provide a static inline user access API implementation.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
static __always_inline void *	UACCESS_INLINE (flat, phys_to_virt)(physaddr_t phys)
static __always_inline physaddr_t	UACCESS_INLINE (flat, virt_to_phys)(volatile const void *virt)
physaddr_t	__attribute__ ((const)) virt_to_phys(volatile const void *virt)
	Convert virtual address to a physical address.

Detailed Description

Access to external ("user") memory.

Definition in file uaccess.h.

Macro Definition Documentation

UACCESS_PREFIX_flat

#define UACCESS_PREFIX_flat   __flat_

Definition at line 21 of file uaccess.h.

UACCESS_INLINE

#define UACCESS_INLINE	(		_subsys,
			_api_func )

Value:

        SINGLE_API_INLINE ( UACCESS_PREFIX_ ## _subsys, _api_func )

Calculate static inline user access API function name.

Parameters

_prefix	Subsystem prefix
_api_func	API function

Return values

_subsys_func

Subsystem API function

Definition at line 31 of file uaccess.h.

#define UACCESS_INLINE( _subsys, _api_func ) \
        SINGLE_API_INLINE ( UACCESS_PREFIX_ ## _subsys, _api_func )

PROVIDE_UACCESS

#define PROVIDE_UACCESS	(		_subsys,
			_api_func,
			_func )

Value:

        PROVIDE_SINGLE_API ( UACCESS_PREFIX_ ## _subsys, _api_func, _func )

Provide an user access API implementation.

Parameters

_prefix	Subsystem prefix
_api_func	API function
_func	Implementing function

Definition at line 41 of file uaccess.h.

#define PROVIDE_UACCESS( _subsys, _api_func, _func ) \
        PROVIDE_SINGLE_API ( UACCESS_PREFIX_ ## _subsys, _api_func, _func )

PROVIDE_UACCESS_INLINE

#define PROVIDE_UACCESS_INLINE	(		_subsys,
			_api_func )

Value:

        PROVIDE_SINGLE_API_INLINE ( UACCESS_PREFIX_ ## _subsys, _api_func )

Provide a static inline user access API implementation.

Parameters

_prefix	Subsystem prefix
_api_func	API function

Definition at line 50 of file uaccess.h.

#define PROVIDE_UACCESS_INLINE( _subsys, _api_func ) \
        PROVIDE_SINGLE_API_INLINE ( UACCESS_PREFIX_ ## _subsys, _api_func )

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

UACCESS_INLINE() [1/2]

__always_inline void * UACCESS_INLINE ( flat , phys_to_virt  )

inlinestatic

Definition at line 54 of file uaccess.h.

                                                          {
        return ( ( void * ) phys );
}

References phys.

UACCESS_INLINE() [2/2]

__always_inline physaddr_t UACCESS_INLINE ( flat , virt_to_phys  ) const volatile

inlinestatic

Definition at line 59 of file uaccess.h.

                                                                    {
        return ( ( physaddr_t ) virt );
}

__attribute__()

physaddr_t __attribute__

(

(const)

)

const volatile

Convert virtual address to a physical address.

Convert physical address to a virtual address.

Parameters

virt	Virtual address

Return values

phys	Physical address

Parameters

phys	Physical address

Return values

virt	Virtual address

This operation is not available under all memory models.

References __attribute__, and phys.