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/* |
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* Catweasel -- Advanced Floppy Controller |
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* Linux device driver |
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* Low-level routines (header) |
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* |
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* Copyright (C) 1998-2002 Michael Krause |
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* |
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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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* 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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* |
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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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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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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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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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#ifndef _CATWEASEL_H |
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#define _CATWEASEL_H |
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typedef struct catweasel_drive { |
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struct catweasel_contr *contr; /* The controller this drive belongs to */ |
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int number; /* Drive number: 0 or 1 */ |
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int type; /* 0 = not present, 1 = 3.5" */ |
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int track; /* current r/w head position (0..79) */ |
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int diskindrive; /* 0 = no disk, 1 = disk in drive */ |
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int wprot; /* 0 = not, 1 = write protected */ |
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} catweasel_drive; |
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typedef struct catweasel_contr { |
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int type; /* see CATWEASEL_TYPE_* defines below */ |
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int iobase; /* 0 = not present (factory default is 0x320) */ |
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void (*msdelay)(int ms); /* microseconds delay routine, provided by host program */ |
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catweasel_drive drives[2]; /* at most two drives on each controller */ |
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int control_register; /* contents of control register */ |
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unsigned char crm_sel0; /* bit masks for the control / status register */ |
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unsigned char crm_sel1; |
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unsigned char crm_mot0; |
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unsigned char crm_mot1; |
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unsigned char crm_dir; |
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unsigned char crm_step; |
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unsigned char srm_trk0; |
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unsigned char srm_dchg; |
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unsigned char srm_writ; |
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int io_sr; /* IO port of control / status register */ |
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int io_mem; /* IO port of memory register */ |
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} catweasel_contr; |
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#define CATWEASEL_TYPE_NONE -1 |
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#define CATWEASEL_TYPE_MK1 1 |
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#define CATWEASEL_TYPE_MK3 3 |
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/* Initialize a Catweasel controller; c->iobase and c->msdelay must have |
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been initialized -- msdelay might be used */ |
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void catweasel_init_controller(catweasel_contr *c); |
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/* Reset the controller */ |
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void catweasel_free_controller(catweasel_contr *c); |
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/* Set current drive select mask */ |
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void catweasel_select(catweasel_contr *c, int dr0, int dr1); |
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/* Start/stop the drive's motor */ |
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void catweasel_set_motor(catweasel_drive *d, int on); |
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/* Move the r/w head -- msdelay might be used */ |
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int catweasel_seek(catweasel_drive *d, int track); |
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/* Check for a disk change and update d->diskindrive |
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-- msdelay might be used. Returns 1 == disk has been changed */ |
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int catweasel_disk_changed(catweasel_drive *d); |
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/* Check if disk in selected drive is write protected. */ |
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int catweasel_write_protected(catweasel_drive *d); |
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/* Read data -- msdelay will be used */ |
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int catweasel_read(catweasel_drive *d, int side, int clock, int time); |
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/* Write data -- msdelay will be used. If time == -1, the write will |
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be started at the index pulse and stopped at the next index pulse, |
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or earlier if the Catweasel RAM contains a 128 end byte. The |
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function returns after the write has finished. */ |
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int catweasel_write(catweasel_drive *d, int side, int clock, int time); |
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#endif /* _CATWEASEL_H */ |
