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