/[gxemul]/trunk/src/include/diskimage.h
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/src/include/diskimage.h

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Revision 6 - (show annotations)
Mon Oct 8 16:18:11 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 4851 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.772 2005/06/04 12:02:16 debug Exp $
20050428	Disabling the "-fmove-all-movables" option in the configure
		script, because it causes the compile to fail on OpenBSD/sgi.
20050502	Minor updates.
20050503	Removing the WRT54G mode (it was bogus anyway), and adding a
		comment about Windows NT for MIPS in doc/experiments.html.
		Minor updates to the x86 instruction decoding.
20050504	Adding some more x86 instructions.
		Adding support for reading files from ISO9660 CDROMs (including
		gzipped files). It's an ugly hack, but it seems to work.
		Various other minor updates (dev_vga.c, pc_bios.c etc).
20050505	Some more x86-related updates.
		Beginning (what I hope will be) a major code cleanup phase.
		"bootris" (an x86 bootsector) runs :-)
20050506	Adding some more x86 instructions.
20050507	tmpnam => mkstemp.
		Working on a hack to allow VGA charcells to be shown even when
		not running with X11.
		Adding more x86 instructions.
20050508	x86 32-bit SIB addressing fix, and more instructions.
20050509	Adding more x86 instructions.
20050510	Minor documentation updates, and other updates (x86 stuff etc.)
20050511	More x86-related updates.
20050513	Various updates, mostly x86-related. (Trying to fix flag 
		calculation, factoring out the ugly shift/rotate code, and
		some other things.)
20050514	Adding support for loading some old i386 a.out executables.
		Finally beginning the cleanup of machine/PROM/bios dependant
		info.
		Some minor documentation updates.
		Trying to clean up ARCBIOS stuff a little.
20050515	Trying to make it possible to actually use more than one disk
		type per machine (floppy, ide, scsi).
		Trying to clean up the kbd vs PROM console stuff. (For PC and
		ARC emulation modes, mostly.)
		Beginning to add an 8259 interrupt controller, and connecting
		it to the x86 emulation.
20050516	The first x86 interrupts seem to work (keyboard stuff).
		Adding a 8253/8254 programmable interval timer skeleton.
		FreeDOS now reaches a command prompt and can be interacted
		with.
20050517	After some bugfixes, MS-DOS also (sometimes) reaches a
		command prompt now.
		Trying to fix the pckbc to work with MS-DOS' keyb.com, but no
		success yet.
20050518	Adding a simple 32-bit x86 MMU skeleton.
20050519	Some more work on the x86 stuff. (Beginning the work on paging,
		and various other fixes).
20050520	More updates. Working on dev_vga (4-bit graphics modes), adding
		40 columns support to the PC bios emulation.
		Trying to add support for resizing windows when switching
		between graphics modes.
20050521	Many more x86-related updates.
20050522	Correcting the initial stack pointer's sign-extension for
		ARCBIOS emulation (thanks to Alec Voropay for noticing the
		error).
		Continuing on the cleanup (ARCBIOS etc).
		dev_vga updates.
20050523	More x86 updates: trying to add some support for protected mode
		interrupts (via gate descriptors) and many other fixes.
		More ARCBIOS cleanup.
		Adding a device flag which indicates that reads cause no
		side-effects. (Useful for the "dump" command in the debugger,
		and other things.)
		Adding support for directly starting up x86 ELFs, skipping the
		bootloader stage. (Most ELFs, however, are not suitable for
		this.)
20050524	Adding simple 32-bit x86 TSS task switching, but no privilege
		level support yet.
		More work on dev_vga. A small "Copper bars" demo works. :-)
		Adding support for Trap Flag (single-step exceptions), at least
		in real mode, and various other x86-related fixes.
20050525	Adding a new disk image prefix (gH;S;) which can be used to
		override the default nr of heads and sectors per track.
20050527	Various bug fixes, more work on the x86 mode (stack change on
		interrupts between different priv.levels), and some minor
		documentation updates.
20050528	Various fixes (x86 stuff).
20050529	More x86 fixes. An OpenBSD/i386 bootfloppy reaches userland
		and can be interacted with (although there are problems with
		key repetition). NetBSD/i386 triggers a serious CISC-related
		problem: instruction fetches across page boundaries, where
		the later part isn't actually part of the instruction.
20050530	Various minor updates. (Documentation updates, etc.)
20050531	Adding some experimental code (experiments/new_test_*) which
		could be useful for dynamic (but not binary) translation in
		the future.
20050602	Adding a dummy ARM skeleton.
		Fixing the pckbc key repetition problem (by adding release
		scancodes for all keypresses).
20050603	Minor updates for the next release.
20050604	Release testing. Minor updates.

==============  RELEASE 0.3.3  ==============

20050604	There'll probably be a 0.3.3.1 release soon, with some very
		very tiny updates.


1 #ifndef DISKIMAGE_H
2 #define DISKIMAGE_H
3
4 /*
5 * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *
31 * $Id: diskimage.h,v 1.28 2005/05/25 06:40:19 debug Exp $
32 *
33 * Generic disk image functions. (See diskimage.c for more info.)
34 */
35
36 #include <stdio.h>
37 #include <sys/types.h>
38
39 #include "misc.h"
40
41 /* Diskimage types: */
42 #define DISKIMAGE_SCSI 1
43 #define DISKIMAGE_IDE 2
44 #define DISKIMAGE_FLOPPY 3
45
46 #define DISKIMAGE_TYPES { "(NONE)", "SCSI", "IDE", "FLOPPY" }
47
48 struct diskimage {
49 struct diskimage *next;
50 int type; /* DISKIMAGE_SCSI, etc */
51 int id; /* SCSI id */
52
53 char *fname;
54 FILE *f;
55
56 int chs_override;
57 int cylinders;
58 int heads;
59 int sectors_per_track;
60
61 off_t total_size;
62 int logical_block_size;
63
64 int writable;
65 int is_a_cdrom;
66 int is_boot_device;
67
68 int is_a_tape;
69 uint64_t tape_offset;
70 int tape_filenr;
71 int filemark;
72
73 int rpms;
74 int ncyls;
75 };
76
77
78 /* Transfer command, sent from a SCSI controller device to a disk: */
79 struct scsi_transfer {
80 struct scsi_transfer *next_free;
81
82 /* These should be set by the SCSI controller before the call: */
83 unsigned char *msg_out;
84 size_t msg_out_len;
85 unsigned char *cmd;
86 size_t cmd_len;
87
88 /* data_out_len is set by the SCSI disk, if it needs data_out,
89 which is then filled in during a second pass in the controller. */
90 unsigned char *data_out;
91 size_t data_out_len;
92 size_t data_out_offset;
93
94 /* These should be set by the SCSI (disk) device before returning: */
95 unsigned char *data_in;
96 size_t data_in_len;
97 unsigned char *msg_in;
98 size_t msg_in_len;
99 unsigned char *status;
100 size_t status_len;
101 };
102
103
104 struct machine;
105
106 struct scsi_transfer *scsi_transfer_alloc(void);
107 void scsi_transfer_free(struct scsi_transfer *);
108 void scsi_transfer_allocbuf(size_t *lenp, unsigned char **pp,
109 size_t want_len, int clearflag);
110
111
112 int64_t diskimage_getsize(struct machine *machine, int id, int type);
113 void diskimage_getchs(struct machine *machine, int id, int type,
114 int *c, int *h, int *s);
115 int diskimage_scsicommand(struct cpu *cpu, int id, int type,
116 struct scsi_transfer *);
117 int diskimage_access(struct machine *machine, int id, int type, int writeflag,
118 off_t offset, unsigned char *buf, size_t len);
119 int diskimage_exist(struct machine *machine, int scsi_id, int type);
120 int diskimage_bootdev(struct machine *machine, int *typep);
121 int diskimage_add(struct machine *machine, char *fname);
122 int diskimage_is_a_cdrom(struct machine *machine, int id, int type);
123 int diskimage_is_a_tape(struct machine *machine, int id, int type);
124 void diskimage_dump_info(struct machine *machine);
125
126 /*
127 * SCSI commands:
128 */
129 #define SCSICMD_TEST_UNIT_READY 0x00 /* Mandatory */
130 #define SCSICMD_REQUEST_SENSE 0x03 /* Mandatory */
131 #define SCSICMD_INQUIRY 0x12 /* Mandatory */
132
133 #define SCSICMD_READ 0x08
134 #define SCSICMD_READ_10 0x28
135 #define SCSICMD_WRITE 0x0a
136 #define SCSICMD_WRITE_10 0x2a
137 #define SCSICMD_MODE_SELECT 0x15
138 #define SCSICMD_MODE_SENSE 0x1a
139 #define SCSICMD_START_STOP_UNIT 0x1b
140
141 #define SCSICMD_SYNCHRONIZE_CACHE 0x35
142
143 /* SCSI block device commands: */
144 #define SCSIBLOCKCMD_READ_CAPACITY 0x25
145
146 /* SCSI CD-ROM commands: */
147 #define SCSICDROM_READ_SUBCHANNEL 0x42
148 #define SCSICDROM_READ_TOC 0x43
149
150 /* SCSI tape commands: */
151 #define SCSICMD_REWIND 0x01
152 #define SCSICMD_READ_BLOCK_LIMITS 0x05
153 #define SCSICMD_SPACE 0x11
154
155
156 #endif /* DISKIMAGE_H */

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