device.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	device.h (extension)
 *
 *	Device management
 */

#ifndef __EXTENSION_DEVICE_H__
#define __EXTENSION_DEVICE_H__

#include <basic.h>
#include "typedef.h"
#include <tk/devmgr.h>

#ifdef __cplusplus
extern "C" {
#endif

#define	L_DEVNM		8		/* Length of device name		*/

/*
 *	Open mode
 */
#define	D_READ		0x0001U		/* Read-only open		*/
#define	D_WRITE		0x0002U		/* Write-only open		*/
#define	D_UPDATE	0x0003U		/* Open for update		*/
#define	D_EXCL		0x0100U		/* Specify exclusive mode		*/
#define	D_WEXCL		0x0200U		/* Specify exclusive write mode	*/

/*
 *	Device management information
 */
typedef struct dev_state {
	UW	attr;		/* Device attribute			*/
	UW	mode;		/* Access mode			*/
	W	blksz;		/* Physical block size (<=0: Unknown)	*/
	W	wprt;		/* Decision to write (<=0:Enabled/Unknown,1: Disabled)	*/
} DEV_STATE;

/*
 *	Device information
 */
typedef struct {
	UW	attr;			/* Device attribute		*/
	W	nsub;			/* Number of subunits		*/
	TC	name[L_DEVNM];		/* Unit name			*/
} DEV_INFO;

/*
 *	Suspend request mode
 */
#define	D_SUSPEND	0x0001		/* Suspend		*/
#define	D_DISSUS	0x0002		/* Prohibit suspending 	*/
#define	D_ENASUS	0x0003		/* Allow suspending 	*/
#define	D_CHECK		0x0004		/* Check on count of suspending prohibitions */
#define	D_EMRGSUS	0x0010		/* Suspend in case of emergency		*/
#define	D_FORCE		0x8000		/* Specify forced suspending		*/

#define	D_NOTIFY	0x1000		/* Request notification		*/
#define	D_NOTSUS	0x0001		/* Notify suspend		*/
#define	D_NOTRES	0x0002		/* Notify resume		*/

/*
 * Definitions for automatic generation of interface library (mkiflib)
 */
/*** DEFINE_IFLIB
[INCLUDE FILE]
<extension/device.h>

[PREFIX]
DM
***/

/*
 * Device management system call
 */
/* [BEGIN SYSCALLS] */
IMPORT ER tkse_opn_dev2(TC *dev, W o_mode, W* error);
IMPORT ER tkse_cls_dev2(W dd, UINT option, W* error);
IMPORT ER tkse_rea_dev2(W dd, W start, B* buf, W size, W* a_size, W* error);
IMPORT ER tkse_wri_dev2(W dd, W start, B* buf, W size, W* a_size, W* error);
/* RESERVE_NO */
IMPORT ER tkse_dev_sts(TC *dev, DEV_STATE *buf);
IMPORT ER tkse_get_dev2(TC *dev, W num);
IMPORT ER tkse_lst_dev2(DEV_INFO *dev, W ndev);
IMPORT ER tkse_sus_dev(UW mode);

IMPORT ID tkse_opn_dev( UB *devnm, UINT omode );
IMPORT ER tkse_cls_dev( ID dd, UINT option );
IMPORT ID tkse_rea_dev( ID dd, INT start, VP buf, INT size, TMO tmout );
IMPORT ER tkse_srea_dev( ID dd, INT start, VP buf, INT size, INT *asize );
IMPORT ID tkse_wri_dev( ID dd, INT start, VP buf, INT size, TMO tmout );
IMPORT ER tkse_swri_dev( ID dd, INT start, VP buf, INT size, INT *asize );
IMPORT ID tkse_wai_dev( ID dd, ID reqid, INT *asize, ER *ioer, TMO tmout );
IMPORT ID tkse_get_dev( ID devid, UB *devnm );
IMPORT ID tkse_ref_dev( UB *devnm, T_RDEV *rdev );
IMPORT ID tkse_oref_dev( ID dd, T_RDEV *rdev );
IMPORT INT tkse_lst_dev( T_LDEV *ldev, INT start, INT ndev );
/* [END SYSCALLS] */

#ifdef __cplusplus
}
#endif
#endif /* __EXTENSION_DEVICE_H__ */