librtas_src/syscall.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	rtas_args
struct	region
Defines
#define	__NR_rtas   255
#define	MAX_ARGS   16
#define	BITS32_LO(_num)   (uint32_t) (_num & 0xffffffffll)
#define	BITS32_HI(_num)   (uint32_t) (_num >> 32)
#define	BITS64(_high, _low)   (uint64_t) (((uint64_t) _high << 32) | _low)
Typedefs
typedef uint32_t	rtas_arg_t
Functions
int	sc_get_rmo_buffer (size_t size, void **buf, uint32_t *phys_addr)
int	sc_free_rmo_buffer (void *buf, uint32_t phys_addr, size_t size)
int	sc_interface_exists ()

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Detailed Description

Copyright (C) 2005 IBM Corporation Common Public License Version 1.0 (see COPYRIGHT)

Author:

John Rose <johnrose@us.ibm.com>

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Define Documentation

#define __NR_rtas   255

#define BITS32_HI

(

_num

)

(uint32_t) (_num >> 32)

#define BITS32_LO

(

_num

)

(uint32_t) (_num & 0xffffffffll)

#define BITS64	(	_high,
		_low		)	(uint64_t) (((uint64_t) _high << 32) | _low)

#define MAX_ARGS   16

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Typedef Documentation

typedef uint32_t rtas_arg_t

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Function Documentation

int sc_free_rmo_buffer	(	void *	buf,
		uint32_t	phys_addr,
		size_t	size
	)

sc_free_rmo_buffer

Parameters:

	buf	virtual address of mmap()'ed buffer
	phys_addr	physical address of low mem buffer
	size	size of buffer

Returns:

0 on success, !0 otherwise RTAS_FREE_ERR - Free called before get RTAS_IO_ASSERT - Unexpected I/O Error

int sc_get_rmo_buffer	(	size_t	size,
		void **	buf,
		uint32_t *	phys_addr
	)

sc_get_rmo_buffer

Parameters:

	size	Size of requested region. Must be a multiple of 4096.
	buf	Assigned to mmap'ed buffer of acquired region
	phys_addr	Assigned to physical address of acquired region

Returns:

0 on success, !0 otherwise RTAS_NO_MEM - Out of heap memory RTAS_NO_LOWMEM - Out of rmo memory RTAS_IO_ASSERT - Unexpected I/O Error

int sc_interface_exists

(

)

sc_interface_exists

Returns:

0 on success, !0 otherwise

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