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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [include/] [dos.h] - Rev 613
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/* dos.h -- dos services (C-header file) Copyright (C) 2002 Richard Herveille, rherveille@opencores.org This file is part of OpenRISC 1000 Reference Platform Monitor (ORPmon) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * Definitions for the Opencores ATA Controller Core */ #ifndef __OC_DOS_H #define __OC_DOS_H #include "ata.h" struct dosparam { unsigned short bytes_per_sector; unsigned char fats; // number of FATs unsigned char sectors_per_cluster; unsigned short sectors_per_fat; unsigned short root_entries; // number of entries in the root sector unsigned long ssector; // startsector of current directory unsigned long csector; // startsector of current cluster unsigned long sentry; // startentry of current cluster unsigned char cbuf[8192]; // cluster buffer. This should be dynamically alocated /* ata driver structures */ struct inode inode; struct file filp; struct request request; }; struct dos_dir_entry { unsigned char name[8]; unsigned char ext[3]; unsigned char attribute; // attributes unsigned char reserved[10]; unsigned short time; // time of creation/modification unsigned short date; // date of creation/modification unsigned short sc; // startcluster unsigned long size; // file size }; #define ATT_ARC 0x20 #define ATT_DIR 0x10 #define ATT_LAB 0x08 #define ATT_SYS 0x04 #define ATT_HID 0x02 #define ATT_RW 0x01 /* macros */ #define bytes_per_cluster(param) (unsigned long)(param->sectors_per_cluster * param->bytes_per_sector) #define entries_per_cluster(param) (unsigned long)(bytes_per_cluster(param) / sizeof(struct dos_dir_entry) ) /* prototypes */ int dos_open(struct dosparam *params); int dos_release(struct dosparam *params); struct dos_dir_entry *dos_dir_get_entry(struct dosparam *params, unsigned long entry); struct dos_dir_entry *dos_dir_find_entry(struct dosparam *params, const char *name); char *dos_read_cluster(struct dosparam *params, unsigned long ssector); char *dos_dir_cluster_read_nxt(struct dosparam *params); char *dos_dir_cluster_reset(struct dosparam *params); #endif
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