Add header for magneto-optical drive emulation.

2020-03-27 17:13:30 +00:00
parent a79605c833
commit d6fa2f1288
1 changed files with 153 additions and 0 deletions
--- a/src/devices/disk/mo.h
+++ b/src/devices/disk/mo.h
@@ -0,0 +1,153 @@
+/*
+ * VARCem	Virtual ARchaeological Computer EMulator.
+ *		An emulator of (mostly) x86-based PC systems and devices,
+ *		using the ISA,EISA,VLB,MCA  and PCI system buses, roughly
+ *		spanning the era between 1981 and 1995.
+ *
+ *		This file is part of the VARCem Project.
+ *
+ *		Implementation of a generic Magneto-Optical Disk drive
+ *		commands, for both ATAPI and SCSI usage.
+ *
+ * Version:	@(#)mo.h	1.0.0	2020/03/27
+ *
+ * Authors:  Natalia Portillo, <claunia@claunia.com>
+ *           Miran Grca, <mgrca8@gmail.com>
+ *
+ *		Copyright 2020 Natalia Portillo.
+ *
+ * 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.
+ *   59 Temple Place - Suite 330
+ *   Boston, MA 02111-1307
+ *   USA.
+ */
+#ifndef EMU_MO_H
+#define EMU_MO_H
+
+
+#define MO_NUM			4
+
+#define BUF_SIZE		32768
+
+#define MO_TIME		(5LL * 100LL * (1LL << TIMER_SHIFT))
+
+// TODO: Create arrays with media-type, sectors, bps
+// 3.5" standard M.O. disks
+#define MO_SECTORS_ISO10090		(248826)
+#define MO_SECTORS_ISO13963		(446325)
+#define MO_SECTORS_ISO15498		(310352)
+#define MO_SECTORS_GIGAMO		(605846)
+#define MO_SECTORS_GIGAMO2		(1063146)
+
+#define MO_BPS_ISO10090		(512)
+#define MO_BPS_ISO13963		(512)
+#define MO_BPS_ISO15498		(2048)
+#define MO_BPS_GIGAMO		(2048)
+#define MO_BPS_GIGAMO2		(2048)
+
+enum {
+    MO_BUS_DISABLED = 0,
+    MO_BUS_ATAPI,
+    MO_BUS_SCSI,
+    MO_BUS_USB
+};
+#define MO_BUS_MAX	(MO_BUS_USB)	/* USB exclusive */
+
+
+typedef struct {
+    int8_t	bus_type,		/* 0 = ATAPI, 1 = SCSI */
+		bus_mode,		/* Bit 0 = PIO suported;
+					   Bit 1 = DMA supportd. */
+		read_only,
+		ui_writeprot;
+
+    union {
+	uint8_t ide_channel;
+	struct {
+		int8_t  id;
+		int8_t  lun;
+	}       scsi;
+    }		bus_id;
+
+    uint32_t	medium_size,
+		base;
+    uint16_t sector_size;
+
+    void	*priv;
+
+    FILE	*f;
+
+    wchar_t	image_path[1024],
+		prev_image_path[1024];
+} mo_drive_t;
+
+typedef struct {
+    uint8_t	id,
+		error, status,
+		phase,
+		features,
+		is_dma,
+		do_page_save,
+		unit_attention;
+
+    mo_drive_t	*drv;
+
+    uint16_t	request_length,
+		max_transfer_len;
+
+    int		requested_blocks, packet_status,
+		request_pos, old_len,
+		total_length;
+
+    uint32_t	sector_pos, sector_len,
+		packet_len, pos,
+		seek_pos;
+
+    tmrval_t	callback;
+
+    mode_sense_pages_t ms_pages_saved;
+
+    uint8_t	*buffer,
+		atapi_cdb[16],
+		current_cdb[16],
+		sense[256];
+} mo_t;
+
+
+extern mo_drive_t	mo_drives[MO_NUM];
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void        mo_disk_close(mo_t *dev);
+extern void        mo_disk_reload(mo_t *dev);
+extern void	       mo_insert(mo_t *dev);
+extern void	       mo_global_init(void);
+extern void		   mo_hard_reset(void);
+extern void		   mo_reset_bus(int bus);
+extern int		   mo_string_to_bus(const char *str);
+extern const char *mo_bus_to_string(int bus);
+extern int	       mo_load(mo_t *dev, const wchar_t *fn);
+extern void	       mo_close(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif	/*EMU_MO_H*/