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/* *********************************************************************
* Broadcom Common Firmware Environment (CFE)
*
* Filesystem dispatch defs File: cfe_fileops.h
*
* CFE supports multiple access methods to files on boot
* media. This module contains the dispatch table structures
* for "file systems".
*
* Author: Mitch Lichtenberg (mpl@broadcom.com)
*
*********************************************************************
*
* Copyright 2000,2001,2002,2003
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and
* conditions. Subject to these conditions, you may download,
* copy, install, use, modify and distribute modified or unmodified
* copies of this software in source and/or binary form. No title
* or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions
* as they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or
* logo of Broadcom Corporation. The "Broadcom Corporation"
* name may not be used to endorse or promote products derived
* from this software without the prior written permission of
* Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
* SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
* PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
********************************************************************* */
/* *********************************************************************
* Constants
********************************************************************* */
#define FILE_SEEK_BEGINNING 0
#define FILE_SEEK_CURRENT 1
#define FILE_MODE_READ 1
#define FILE_MODE_WRITE 2
/* These flags should not conflict with the loader arg flags (see cfe_loadargs_t) */
#define FSYS_TYPE_NETWORK 0x40000000
/* *********************************************************************
* Macros
********************************************************************* */
#define BDINIT(ops,fsctx,name) (ops)->init((fsctx),(name))
#define BDOPEN(ops,ref,fsctx,name) (ops)->open((ref),(fsctx),(name),FILE_MODE_READ)
#define BDOPEN2(ops,ref,fsctx,name,mode) (ops)->open((ref),(fsctx),(name),(mode))
#define BDOPEN_WR(ops,ref,fsctx,name) (ops)->open((ref),(fsctx),(name),FILE_MODE_WRITE)
#define BDREAD(ops,ref,buf,len) (ops)->read((ref),(buf),(len))
#define BDWRITE(ops,ref,buf,len) (ops)->write((ref),(buf),(len))
#define BDCLOSE(ops,ref) (ops)->close((ref))
#define BDUNINIT(ops,ref) (ops)->uninit((ref))
#define BDSEEK(ops,ref,offset,how) (ops)->seek((ref),(offset),(how))
/* *********************************************************************
* Structures
********************************************************************* */
typedef struct fileio_dispatch_s {
const char *method;
unsigned int loadflags;
int (*init)(void **fsctx,void *device);
int (*open)(void **ref,void *fsctx,char *filename,int mode);
int (*read)(void *ref,uint8_t *buf,int len);
int (*write)(void *ref,uint8_t *buf,int len);
int (*seek)(void *ref,int offset,int how);
void (*close)(void *ref);
void (*uninit)(void *devctx);
} fileio_dispatch_t;
typedef struct fileio_ctx_s {
const fileio_dispatch_t *ops;
void *fsctx;
} fileio_ctx_t;
const fileio_dispatch_t *cfe_findfilesys(const char *name);
int fs_init(char *fsname,fileio_ctx_t **fsctx,void *device);
int fs_uninit(fileio_ctx_t *);
int fs_open(fileio_ctx_t *,void **ref,char *filename,int mode);
int fs_close(fileio_ctx_t *,void *ref);
int fs_read(fileio_ctx_t *,void *ref,uint8_t *buffer,int len);
int fs_write(fileio_ctx_t *,void *ref,uint8_t *buffer,int len);
int fs_seek(fileio_ctx_t *,void *ref,int offset,int how);
int fs_hook(fileio_ctx_t *fsctx,char *fsname);
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