DevFdc.cpp@ 59248

Last change on this file since 59248 was 59248, checked in by vboxsync, 9 years ago
Storage: Get rid of the block driver and merge the the little extra functionality it had into the VD driver. Enables us to get rid of PDMIBLOCK which is basically a subset of PDMIMEDIA and makes changes to the latter interface tedious because it had to be replicated in the former. (bugref:4114)
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 102.0 KB

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1	/* $Id: DevFdc.cpp 59248 2016-01-04 14:13:22Z vboxsync $ */
2	/** @file
3	* VBox storage devices: Floppy disk controller
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on:
19	*
20	* QEMU Floppy disk emulator (Intel 82078)
21	*
22	* Copyright (c) 2003 Jocelyn Mayer
23	*
24	* Permission is hereby granted, free of charge, to any person obtaining a copy
25	* of this software and associated documentation files (the "Software"), to deal
26	* in the Software without restriction, including without limitation the rights
27	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
28	* copies of the Software, and to permit persons to whom the Software is
29	* furnished to do so, subject to the following conditions:
30	*
31	* The above copyright notice and this permission notice shall be included in
32	* all copies or substantial portions of the Software.
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
40	* THE SOFTWARE.
41	*
42	*/
43
44
45	/*********************************************************************************************************************************
46	* Header Files *
47	*********************************************************************************************************************************/
48	#define LOG_GROUP LOG_GROUP_DEV_FDC
49	#include <VBox/vmm/pdmdev.h>
50	#include <iprt/assert.h>
51	#include <iprt/string.h>
52	#include <iprt/uuid.h>
53
54	#include "VBoxDD.h"
55
56	#define FDC_SAVESTATE_CURRENT 2 /* The new and improved saved state. */
57	#define FDC_SAVESTATE_OLD 1 /* The original saved state. */
58
59	#define MAX_FD 2
60
61
62	/********************************************************/
63	/* debug Floppy devices */
64	/* #define DEBUG_FLOPPY */
65
66	#ifndef VBOX
67	#ifdef DEBUG_FLOPPY
68	#define FLOPPY_DPRINTF(fmt, args...) \
69	do { printf("FLOPPY: " fmt , ##args); } while (0)
70	#endif
71	#else /* !VBOX */
72	# ifdef LOG_ENABLED
73	static void FLOPPY_DPRINTF (const char *fmt, ...)
74	{
75	if (LogIsEnabled ()) {
76	va_list args;
77	va_start (args, fmt);
78	RTLogLogger (NULL, NULL, "floppy: %N", fmt, &args); /* %N - nested va_list * type formatting call. */
79	va_end (args);
80	}
81	}
82	# else
83	DECLINLINE(void) FLOPPY_DPRINTF(const char *pszFmt, ...) {}
84	# endif
85	#endif /* !VBOX */
86
87	#ifndef VBOX
88	#define FLOPPY_ERROR(fmt, args...) \
89	do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
90	#else /* VBOX */
91	# define FLOPPY_ERROR RTLogPrintf
92	#endif /* VBOX */
93
94	#ifdef VBOX
95	typedef struct fdctrl_t fdctrl_t;
96	#endif /* VBOX */
97
98	/********************************************************/
99	/* Floppy drive emulation */
100
101	#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
102	#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
103
104	/* Will always be a fixed parameter for us */
105	#define FD_SECTOR_LEN 512
106	#define FD_SECTOR_SC 2 /* Sector size code */
107	#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
108
109	/* Floppy disk drive emulation */
110	typedef enum fdisk_type_t {
111	FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
112	FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
113	FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
114	FDRIVE_DISK_USER = 0x04, /* User defined geometry */
115	FDRIVE_DISK_NONE = 0x05 /* No disk */
116	} fdisk_type_t;
117
118	typedef enum fdrive_type_t {
119	FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
120	FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
121	FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
122	FDRIVE_DRV_NONE = 0x03 /* No drive connected */
123	#ifdef VBOX
124	, FDRIVE_DRV_FAKE_15_6 = 0x0e /* Fake 15.6 MB drive. */
125	, FDRIVE_DRV_FAKE_63_5 = 0x0f /* Fake 63.5 MB drive. */
126	#endif
127	} fdrive_type_t;
128
129	typedef uint8_t fdrive_flags_t;
130	#define FDISK_DBL_SIDES UINT8_C(0x01)
131
132	typedef enum fdrive_rate_t {
133	FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
134	FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
135	FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
136	FDRIVE_RATE_1M = 0x03 /* 1 Mbps */
137	} fdrive_rate_t;
138
139	/**
140	* The status for one drive.
141	*
142	* @implements PDMIBASE
143	* @implements PDMIMEDIAPORT
144	* @implements PDMIMOUNTNOTIFY
145	*/
146	typedef struct fdrive_t {
147	#ifndef VBOX
148	BlockDriverState *bs;
149	#else /* VBOX */
150	/** Pointer to the attached driver's base interface. */
151	R3PTRTYPE(PPDMIBASE) pDrvBase;
152	/** Pointer to the attached driver's block interface. */
153	R3PTRTYPE(PPDMIMEDIA) pDrvMedia;
154	/** Pointer to the attached driver's mount interface.
155	* This is NULL if the driver isn't a removable unit. */
156	R3PTRTYPE(PPDMIMOUNT) pDrvMount;
157	/** The base interface. */
158	PDMIBASE IBase;
159	/** The block port interface. */
160	PDMIMEDIAPORT IPort;
161	/** The mount notify interface. */
162	PDMIMOUNTNOTIFY IMountNotify;
163	/** The LUN #. */
164	RTUINT iLUN;
165	/** The LED for this LUN. */
166	PDMLED Led;
167	#endif
168	/* Drive status */
169	fdrive_type_t drive;
170	uint8_t perpendicular; /* 2.88 MB access mode */
171	uint8_t dsk_chg; /* Disk change line */
172	/* Position */
173	uint8_t head;
174	uint8_t track;
175	uint8_t sect;
176	uint8_t ltrk; /* Logical track */
177	/* Media */
178	fdrive_flags_t flags;
179	uint8_t last_sect; /* Nb sector per track */
180	uint8_t max_track; /* Nb of tracks */
181	uint16_t bps; /* Bytes per sector */
182	uint8_t ro; /* Is read-only */
183	uint8_t media_rate; /* Data rate of medium */
184	} fdrive_t;
185
186	#define NUM_SIDES(drv) (drv->flags & FDISK_DBL_SIDES ? 2 : 1)
187
188	static void fd_init(fdrive_t *drv, bool fInit)
189	{
190	/* Drive */
191	#ifndef VBOX
192	drv->drive = FDRIVE_DRV_NONE;
193	#else /* VBOX */
194	if (fInit) {
195	/* Fixate the drive type at init time if possible. */
196	if (drv->pDrvMedia) {
197	PDMMEDIATYPE enmType = drv->pDrvMedia->pfnGetType(drv->pDrvMedia);
198	switch (enmType) {
199	case PDMMEDIATYPE_FLOPPY_360:
200	case PDMMEDIATYPE_FLOPPY_1_20:
201	drv->drive = FDRIVE_DRV_120;
202	break;
203	case PDMMEDIATYPE_FLOPPY_720:
204	case PDMMEDIATYPE_FLOPPY_1_44:
205	drv->drive = FDRIVE_DRV_144;
206	break;
207	default:
208	AssertFailed();
209	case PDMMEDIATYPE_FLOPPY_2_88:
210	drv->drive = FDRIVE_DRV_288;
211	break;
212	case PDMMEDIATYPE_FLOPPY_FAKE_15_6:
213	drv->drive = FDRIVE_DRV_FAKE_15_6;
214	break;
215	case PDMMEDIATYPE_FLOPPY_FAKE_63_5:
216	drv->drive = FDRIVE_DRV_FAKE_63_5;
217	break;
218	}
219	} else {
220	drv->drive = FDRIVE_DRV_NONE;
221	}
222	} /* else: The BIOS (and others) get the drive type via the CMOS, so
223	don't change it after the VM has been constructed. */
224	#endif /* VBOX */
225	drv->perpendicular = 0;
226	/* Disk */
227	drv->last_sect = 0;
228	drv->max_track = 0;
229	}
230
231	static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
232	uint8_t last_sect, uint8_t num_sides)
233	{
234	return (((track * num_sides) + head) * last_sect) + sect - 1; /* sect >= 1 */
235	}
236
237	/* Returns current position, in sectors, for given drive */
238	static int fd_sector(fdrive_t *drv)
239	{
240	return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, NUM_SIDES(drv));
241	}
242
243	/* Seek to a new position:
244	* returns 0 if already on right track
245	* returns 1 if track changed
246	* returns 2 if track is invalid
247	* returns 3 if sector is invalid
248	* returns 4 if seek is disabled
249	* returns 5 if no media in drive
250	*/
251	static int fd_seek(fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
252	int enable_seek)
253	{
254	int sector;
255	int ret;
256
257	if (!drv->last_sect) {
258	FLOPPY_DPRINTF("no disk in drive (max=%d %d %02x %02x)\n",
259	1, (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
260	drv->max_track, drv->last_sect);
261	return 5;
262	}
263	if (track > drv->max_track \|\|
264	(head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
265	FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
266	head, track, sect, 1,
267	(drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
268	drv->max_track, drv->last_sect);
269	return 2;
270	}
271	if (sect > drv->last_sect \|\| sect < 1) {
272	FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
273	head, track, sect, 1,
274	(drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
275	drv->max_track, drv->last_sect);
276	return 3;
277	}
278	sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
279	ret = 0;
280	if (sector != fd_sector(drv)) {
281	#if 0
282	if (!enable_seek) {
283	FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
284	head, track, sect, 1, drv->max_track, drv->last_sect);
285	return 4;
286	}
287	#endif
288	drv->head = head;
289	if (drv->track != track)
290	ret = 1;
291	drv->track = track;
292	drv->sect = sect;
293	}
294	drv->ltrk = drv->track;
295
296	return ret;
297	}
298
299	/* Set drive back to track 0 */
300	static void fd_recalibrate(fdrive_t *drv)
301	{
302	FLOPPY_DPRINTF("recalibrate\n");
303	drv->head = 0;
304	drv->track = 0;
305	drv->ltrk = 0;
306	drv->sect = 1;
307	}
308
309	/* Recognize floppy formats */
310	typedef struct fd_format_t {
311	fdrive_type_t drive;
312	fdisk_type_t disk;
313	uint8_t last_sect; /*< Number of sectors. /
314	uint8_t max_track; /*< Number of tracks. /
315	uint8_t max_head; /*< Max head number. /
316	fdrive_rate_t rate;
317	const char *str;
318	} fd_format_t;
319
320	/* Note: Low-density disks (160K/180K/320K/360K) use 250 Kbps data rate
321	* in 40-track drives, but 300 Kbps in high-capacity 80-track drives.
322	*/
323	static fd_format_t fd_formats[] = {
324	/* First entry is default format */
325	/* 1.44 MB 3"1/2 floppy disks */
326	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
327	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
328	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
329	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
330	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
331	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
332	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
333	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
334	/* 2.88 MB 3"1/2 floppy disks */
335	{ FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
336	{ FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
337	{ FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
338	{ FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
339	{ FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
340	/* 720 kB 3"1/2 floppy disks */
341	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
342	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
343	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
344	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
345	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
346	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
347	/* 1.2 MB 5"1/4 floppy disks */
348	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 5\"1/4", },
349	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 5\"1/4", }, /* CP Backup 5.25" HD */
350	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 5\"1/4", },
351	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, FDRIVE_RATE_500K, "1.48 MB 5\"1/4", },
352	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, FDRIVE_RATE_500K, "1.49 MB 5\"1/4", },
353	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 5\"1/4", },
354	/* 720 kB 5"1/4 floppy disks */
355	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 5\"1/4", },
356	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, FDRIVE_RATE_250K, "880 kB 5\"1/4", },
357	/* 360 kB 5"1/4 floppy disks (newer 9-sector formats) */
358	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 5\"1/4", },
359	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 5\"1/4", },
360	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 5\"1/4", }, /* CP Backup 5.25" DD */
361	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, FDRIVE_RATE_300K, "410 kB 5\"1/4", },
362	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, FDRIVE_RATE_300K, "420 kB 5\"1/4", },
363	/* 320 kB 5"1/4 floppy disks (old 8-sector formats) */
364	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 5\"1/4", },
365	{ FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 5\"1/4", },
366	/* 1.2 MB and low density 3"1/2 floppy 'aliases' */
367	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 3\"1/2", },
368	{ FDRIVE_DRV_144, FDRIVE_DISK_144, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 3\"1/2", },
369	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 3\"1/2", }, /* CP Backup 5.25" DD */
370	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 3\"1/2", },
371	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 3\"1/2", },
372	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 3\"1/2", },
373	{ FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 3\"1/2", },
374	#ifdef VBOX /* For larger than real life floppy images (see DrvBlock.cpp). */
375	/* 15.6 MB fake floppy disk (just need something big). */
376	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 15.6", },
377	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 15.6", },
378	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 15.6", },
379	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 15.6", },
380	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 15.6", },
381	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 15.6", },
382	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 15.6", },
383	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 15.6", },
384	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 15.6", },
385	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 15.6", },
386	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 15.6", },
387	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 15.6", },
388	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 15.6", },
389	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 15.6", },
390	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 15.6", },
391	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 15.6", },
392	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 15.6", },
393	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 15.6", },
394	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 15.6", },
395	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 15.6", },
396	{ FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 15.6", },
397	/* 63.5 MB fake floppy disk (just need something big). */
398	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 255, 255, 1, FDRIVE_RATE_1M, "63.5 MB fake 63.5", },
399	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 63.5", },
400	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 63.5", },
401	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 63.5", },
402	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 63.5", },
403	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 63.5", },
404	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 63.5", },
405	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 63.5", },
406	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 63.5", },
407	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 63.5", },
408	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 63.5", },
409	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 63.5", },
410	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 63.5", },
411	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 63.5", },
412	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 63.5", },
413	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 63.5", },
414	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 63.5", },
415	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 63.5", },
416	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 63.5", },
417	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 63.5", },
418	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 63.5", },
419	{ FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 63.5", },
420	#endif
421	/* end */
422	{ FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, (uint8_t)-1, (uint8_t)-1, 0, (fdrive_rate_t)0, NULL, },
423	};
424
425	/* Revalidate a disk drive after a disk change */
426	static void fd_revalidate(fdrive_t *drv)
427	{
428	const fd_format_t *parse;
429	uint64_t nb_sectors, size;
430	int i, first_match, match;
431	int nb_heads, max_track, last_sect, ro;
432
433	FLOPPY_DPRINTF("revalidate\n");
434	#ifndef VBOX
435	if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
436	ro = bdrv_is_read_only(drv->bs);
437	bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
438	#else /* VBOX */
439	if ( drv->pDrvMedia
440	&& drv->pDrvMount
441	&& drv->pDrvMount->pfnIsMounted (drv->pDrvMount)) {
442	ro = drv->pDrvMedia->pfnIsReadOnly (drv->pDrvMedia);
443	nb_heads = max_track = last_sect = 0;
444	#endif /* VBOX */
445	if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
446	FLOPPY_DPRINTF("User defined disk (%d %d %d)",
447	nb_heads - 1, max_track, last_sect);
448	} else {
449	#ifndef VBOX
450	bdrv_get_geometry(drv->bs, &nb_sectors);
451	#else /* VBOX */
452	{
453	uint64_t size2 = drv->pDrvMedia->pfnGetSize (drv->pDrvMedia);
454	nb_sectors = size2 / FD_SECTOR_LEN;
455	}
456	#endif /* VBOX */
457	match = -1;
458	first_match = -1;
459	for (i = 0;; i++) {
460	parse = &fd_formats[i];
461	if (parse->drive == FDRIVE_DRV_NONE)
462	break;
463	if (drv->drive == parse->drive \|\|
464	drv->drive == FDRIVE_DRV_NONE) {
465	size = (parse->max_head + 1) * parse->max_track *
466	parse->last_sect;
467	if (nb_sectors == size) {
468	match = i;
469	break;
470	}
471	if (first_match == -1)
472	first_match = i;
473	}
474	}
475	if (match == -1) {
476	if (first_match == -1)
477	match = 1;
478	else
479	match = first_match;
480	parse = &fd_formats[match];
481	}
482	nb_heads = parse->max_head + 1;
483	max_track = parse->max_track;
484	last_sect = parse->last_sect;
485	drv->drive = parse->drive;
486	#ifdef VBOX
487	drv->media_rate = parse->rate;
488	#endif
489	FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
490	nb_heads, max_track, last_sect, ro ? "ro" : "rw");
491	LogRel(("FDC: %s floppy disk (%d h %d t %d s) %s\n", parse->str,
492	nb_heads, max_track, last_sect, ro ? "ro" : "rw"));
493	}
494	if (nb_heads == 1) {
495	drv->flags &= ~FDISK_DBL_SIDES;
496	} else {
497	drv->flags \|= FDISK_DBL_SIDES;
498	}
499	drv->max_track = max_track;
500	drv->last_sect = last_sect;
501	drv->ro = ro;
502	} else {
503	FLOPPY_DPRINTF("No disk in drive\n");
504	drv->last_sect = 0;
505	drv->max_track = 0;
506	drv->flags &= ~FDISK_DBL_SIDES;
507	drv->dsk_chg = true; /* Disk change line active. */
508	}
509	}
510
511	/********************************************************/
512	/* Intel 82078 floppy disk controller emulation */
513
514	static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq);
515	static void fdctrl_reset_fifo(fdctrl_t *fdctrl);
516	#ifndef VBOX
517	static int fdctrl_transfer_handler (void *opaque, int nchan,
518	int dma_pos, int dma_len);
519	#else /* VBOX: */
520	static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
521	void *opaque,
522	unsigned nchan,
523	uint32_t dma_pos,
524	uint32_t dma_len);
525	#endif /* VBOX */
526	static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0);
527	static fdrive_t get_cur_drv(fdctrl_t fdctrl);
528
529	static void fdctrl_result_timer(void *opaque);
530	static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl);
531	static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl);
532	static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl);
533	static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value);
534	static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl);
535	static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value);
536	static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl);
537	static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value);
538	static uint32_t fdctrl_read_data(fdctrl_t *fdctrl);
539	static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value);
540	static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl);
541	static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value);
542
543	enum {
544	FD_DIR_WRITE = 0,
545	FD_DIR_READ = 1,
546	FD_DIR_SCANE = 2,
547	FD_DIR_SCANL = 3,
548	FD_DIR_SCANH = 4,
549	FD_DIR_FORMAT = 5
550	};
551
552	enum {
553	FD_STATE_MULTI = 0x01, /* multi track flag */
554	FD_STATE_FORMAT = 0x02, /* format flag */
555	FD_STATE_SEEK = 0x04 /* seek flag */
556	};
557
558	enum {
559	FD_REG_SRA = 0x00,
560	FD_REG_SRB = 0x01,
561	FD_REG_DOR = 0x02,
562	FD_REG_TDR = 0x03,
563	FD_REG_MSR = 0x04,
564	FD_REG_DSR = 0x04,
565	FD_REG_FIFO = 0x05,
566	FD_REG_DIR = 0x07,
567	FD_REG_CCR = 0x07
568	};
569
570	enum {
571	FD_CMD_READ_TRACK = 0x02,
572	FD_CMD_SPECIFY = 0x03,
573	FD_CMD_SENSE_DRIVE_STATUS = 0x04,
574	FD_CMD_WRITE = 0x05,
575	FD_CMD_READ = 0x06,
576	FD_CMD_RECALIBRATE = 0x07,
577	FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
578	FD_CMD_WRITE_DELETED = 0x09,
579	FD_CMD_READ_ID = 0x0a,
580	FD_CMD_READ_DELETED = 0x0c,
581	FD_CMD_FORMAT_TRACK = 0x0d,
582	FD_CMD_DUMPREG = 0x0e,
583	FD_CMD_SEEK = 0x0f,
584	FD_CMD_VERSION = 0x10,
585	FD_CMD_SCAN_EQUAL = 0x11,
586	FD_CMD_PERPENDICULAR_MODE = 0x12,
587	FD_CMD_CONFIGURE = 0x13,
588	FD_CMD_LOCK = 0x14,
589	FD_CMD_VERIFY = 0x16,
590	FD_CMD_POWERDOWN_MODE = 0x17,
591	FD_CMD_PART_ID = 0x18,
592	FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
593	FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
594	FD_CMD_SAVE = 0x2e,
595	FD_CMD_OPTION = 0x33,
596	FD_CMD_RESTORE = 0x4e,
597	FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
598	FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
599	FD_CMD_FORMAT_AND_WRITE = 0xcd,
600	FD_CMD_RELATIVE_SEEK_IN = 0xcf
601	};
602
603	enum {
604	FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
605	FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
606	FD_CONFIG_POLL = 0x10, /* Poll enabled */
607	FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
608	FD_CONFIG_EIS = 0x40 /* No implied seeks */
609	};
610
611	enum {
612	FD_SR0_EQPMT = 0x10,
613	FD_SR0_SEEK = 0x20,
614	FD_SR0_ABNTERM = 0x40,
615	FD_SR0_INVCMD = 0x80,
616	FD_SR0_RDYCHG = 0xc0
617	};
618
619	enum {
620	FD_SR1_MA = 0x01, /* Missing address mark */
621	FD_SR1_NW = 0x02, /* Not writable */
622	FD_SR1_ND = 0x04, /* No data */
623	FD_SR1_EC = 0x80 /* End of cylinder */
624	};
625
626	enum {
627	FD_SR2_MD = 0x01, /* Missing data address mark */
628	FD_SR2_SNS = 0x04, /* Scan not satisfied */
629	FD_SR2_SEH = 0x08 /* Scan equal hit */
630	};
631
632	enum {
633	FD_SRA_DIR = 0x01,
634	FD_SRA_nWP = 0x02,
635	FD_SRA_nINDX = 0x04,
636	FD_SRA_HDSEL = 0x08,
637	FD_SRA_nTRK0 = 0x10,
638	FD_SRA_STEP = 0x20,
639	FD_SRA_nDRV2 = 0x40,
640	FD_SRA_INTPEND = 0x80
641	};
642
643	enum {
644	FD_SRB_MTR0 = 0x01,
645	FD_SRB_MTR1 = 0x02,
646	FD_SRB_WGATE = 0x04,
647	FD_SRB_RDATA = 0x08,
648	FD_SRB_WDATA = 0x10,
649	FD_SRB_DR0 = 0x20
650	};
651
652	enum {
653	#if MAX_FD == 4
654	FD_DOR_SELMASK = 0x03,
655	#else
656	FD_DOR_SELMASK = 0x01,
657	#endif
658	FD_DOR_nRESET = 0x04,
659	FD_DOR_DMAEN = 0x08,
660	FD_DOR_MOTEN0 = 0x10,
661	FD_DOR_MOTEN1 = 0x20,
662	FD_DOR_MOTEN2 = 0x40,
663	FD_DOR_MOTEN3 = 0x80
664	};
665
666	enum {
667	#if MAX_FD == 4
668	FD_TDR_BOOTSEL = 0x0c
669	#else
670	FD_TDR_BOOTSEL = 0x04
671	#endif
672	};
673
674	enum {
675	FD_DSR_DRATEMASK= 0x03,
676	FD_DSR_PWRDOWN = 0x40,
677	FD_DSR_SWRESET = 0x80
678	};
679
680	enum {
681	FD_MSR_DRV0BUSY = 0x01,
682	FD_MSR_DRV1BUSY = 0x02,
683	FD_MSR_DRV2BUSY = 0x04,
684	FD_MSR_DRV3BUSY = 0x08,
685	FD_MSR_CMDBUSY = 0x10,
686	FD_MSR_NONDMA = 0x20,
687	FD_MSR_DIO = 0x40,
688	FD_MSR_RQM = 0x80
689	};
690
691	enum {
692	FD_DIR_DSKCHG = 0x80
693	};
694
695	#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
696	#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
697	#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
698
699	#ifdef VBOX
700	/**
701	* Floppy controller state.
702	*
703	* @implements PDMILEDPORTS
704	*/
705	#endif
706	struct fdctrl_t {
707	#ifndef VBOX
708	fdctrl_t *fdctrl;
709	#endif
710	/* Controller's identification */
711	uint8_t version;
712	/* HW */
713	#ifndef VBOX
714	int irq;
715	int dma_chann;
716	#else
717	uint8_t irq_lvl;
718	uint8_t dma_chann;
719	#endif
720	uint32_t io_base;
721	/* Controller state */
722	#ifndef VBOX
723	QEMUTimer *result_timer;
724	#else
725	struct TMTIMER *result_timer;
726	#endif
727	uint8_t sra;
728	uint8_t srb;
729	uint8_t dor;
730	uint8_t tdr;
731	uint8_t dsr;
732	uint8_t msr;
733	uint8_t cur_drv;
734	uint8_t status0;
735	uint8_t status1;
736	uint8_t status2;
737	/* Command FIFO */
738	uint8_t fifo[FD_SECTOR_LEN];
739	uint32_t data_pos;
740	uint32_t data_len;
741	uint8_t data_state;
742	uint8_t data_dir;
743	uint8_t eot; /* last wanted sector */
744	/* States kept only to be returned back */
745	/* Timers state */
746	uint8_t timer0;
747	uint8_t timer1;
748	/* precompensation */
749	uint8_t precomp_trk;
750	uint8_t config;
751	uint8_t lock;
752	/* Power down config (also with status regB access mode */
753	uint8_t pwrd;
754	/* Floppy drives */
755	uint8_t num_floppies;
756	fdrive_t drives[MAX_FD];
757	uint8_t reset_sensei;
758	#ifdef VBOX
759	/** Pointer to device instance. */
760	PPDMDEVINS pDevIns;
761
762	/** Status LUN: The base interface. */
763	PDMIBASE IBaseStatus;
764	/** Status LUN: The Leds interface. */
765	PDMILEDPORTS ILeds;
766	/** Status LUN: The Partner of ILeds. */
767	PPDMILEDCONNECTORS pLedsConnector;
768	#endif
769	};
770
771	static uint32_t fdctrl_read (void *opaque, uint32_t reg)
772	{
773	fdctrl_t fdctrl = (fdctrl_t )opaque;
774	uint32_t retval;
775
776	switch (reg) {
777	case FD_REG_SRA:
778	retval = fdctrl_read_statusA(fdctrl);
779	break;
780	case FD_REG_SRB:
781	retval = fdctrl_read_statusB(fdctrl);
782	break;
783	case FD_REG_DOR:
784	retval = fdctrl_read_dor(fdctrl);
785	break;
786	case FD_REG_TDR:
787	retval = fdctrl_read_tape(fdctrl);
788	break;
789	case FD_REG_MSR:
790	retval = fdctrl_read_main_status(fdctrl);
791	break;
792	case FD_REG_FIFO:
793	retval = fdctrl_read_data(fdctrl);
794	break;
795	case FD_REG_DIR:
796	retval = fdctrl_read_dir(fdctrl);
797	break;
798	default:
799	retval = (uint32_t)(-1);
800	break;
801	}
802	FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
803
804	return retval;
805	}
806
807	static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
808	{
809	fdctrl_t fdctrl = (fdctrl_t )opaque;
810
811	FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
812
813	switch (reg) {
814	case FD_REG_DOR:
815	fdctrl_write_dor(fdctrl, value);
816	break;
817	case FD_REG_TDR:
818	fdctrl_write_tape(fdctrl, value);
819	break;
820	case FD_REG_DSR:
821	fdctrl_write_rate(fdctrl, value);
822	break;
823	case FD_REG_FIFO:
824	fdctrl_write_data(fdctrl, value);
825	break;
826	case FD_REG_CCR:
827	fdctrl_write_ccr(fdctrl, value);
828	break;
829	default:
830	break;
831	}
832	}
833
834	/* Change IRQ state */
835	static void fdctrl_reset_irq(fdctrl_t *fdctrl)
836	{
837	if (!(fdctrl->sra & FD_SRA_INTPEND))
838	return;
839	FLOPPY_DPRINTF("Reset interrupt\n");
840	#ifdef VBOX
841	PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
842	#else
843	qemu_set_irq(fdctrl->irq, 0);
844	#endif
845	fdctrl->sra &= ~FD_SRA_INTPEND;
846	}
847
848	static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
849	{
850	if (!(fdctrl->sra & FD_SRA_INTPEND)) {
851	FLOPPY_DPRINTF("Raising interrupt...\n");
852	#ifdef VBOX
853	PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
854	#else
855	qemu_set_irq(fdctrl->irq, 1);
856	#endif
857	fdctrl->sra \|= FD_SRA_INTPEND;
858	}
859	if (status0 & FD_SR0_SEEK) {
860	fdrive_t *cur_drv;
861
862	/* A seek clears the disk change line (if a disk is inserted). */
863	cur_drv = get_cur_drv(fdctrl);
864	if (cur_drv->max_track)
865	cur_drv->dsk_chg = false;
866	}
867
868	fdctrl->reset_sensei = 0;
869	fdctrl->status0 = status0;
870	FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
871	}
872
873	/* Reset controller */
874	static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
875	{
876	int i;
877
878	FLOPPY_DPRINTF("reset controller\n");
879	fdctrl_reset_irq(fdctrl);
880	/* Initialise controller */
881	fdctrl->sra = 0;
882	fdctrl->srb = 0xc0;
883	#ifdef VBOX
884	if (!fdctrl->drives[1].pDrvMedia)
885	#else
886	if (!fdctrl->drives[1].bs)
887	#endif
888	fdctrl->sra \|= FD_SRA_nDRV2;
889	fdctrl->cur_drv = 0;
890	fdctrl->dor = FD_DOR_nRESET;
891	fdctrl->dor \|= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
892	fdctrl->msr = FD_MSR_RQM;
893	/* FIFO state */
894	fdctrl->data_pos = 0;
895	fdctrl->data_len = 0;
896	fdctrl->data_state = 0;
897	fdctrl->data_dir = FD_DIR_WRITE;
898	for (i = 0; i < MAX_FD; i++)
899	fd_recalibrate(&fdctrl->drives[i]);
900	fdctrl_reset_fifo(fdctrl);
901	if (do_irq) {
902	fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
903	fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
904	}
905	}
906
907	static inline fdrive_t drv0(fdctrl_t fdctrl)
908	{
909	return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
910	}
911
912	static inline fdrive_t drv1(fdctrl_t fdctrl)
913	{
914	if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
915	return &fdctrl->drives[1];
916	else
917	return &fdctrl->drives[0];
918	}
919
920	#if MAX_FD == 4
921	static inline fdrive_t drv2(fdctrl_t fdctrl)
922	{
923	if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
924	return &fdctrl->drives[2];
925	else
926	return &fdctrl->drives[1];
927	}
928
929	static inline fdrive_t drv3(fdctrl_t fdctrl)
930	{
931	if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
932	return &fdctrl->drives[3];
933	else
934	return &fdctrl->drives[2];
935	}
936	#endif
937
938	static fdrive_t get_cur_drv(fdctrl_t fdctrl)
939	{
940	switch (fdctrl->cur_drv) {
941	case 0: return drv0(fdctrl);
942	case 1: return drv1(fdctrl);
943	#if MAX_FD == 4
944	case 2: return drv2(fdctrl);
945	case 3: return drv3(fdctrl);
946	#endif
947	default: return NULL;
948	}
949	}
950
951	/* Status A register : 0x00 (read-only) */
952	static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
953	{
954	uint32_t retval = fdctrl->sra;
955
956	FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
957
958	return retval;
959	}
960
961	/* Status B register : 0x01 (read-only) */
962	static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
963	{
964	uint32_t retval = fdctrl->srb;
965
966	FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
967
968	return retval;
969	}
970
971	/* Digital output register : 0x02 */
972	static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
973	{
974	uint32_t retval = fdctrl->dor;
975
976	/* Selected drive */
977	retval \|= fdctrl->cur_drv;
978	FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
979
980	return retval;
981	}
982
983	static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
984	{
985	FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
986
987	/* Motors */
988	if (value & FD_DOR_MOTEN0)
989	fdctrl->srb \|= FD_SRB_MTR0;
990	else
991	fdctrl->srb &= ~FD_SRB_MTR0;
992	if (value & FD_DOR_MOTEN1)
993	fdctrl->srb \|= FD_SRB_MTR1;
994	else
995	fdctrl->srb &= ~FD_SRB_MTR1;
996
997	/* Drive */
998	if (value & 1)
999	fdctrl->srb \|= FD_SRB_DR0;
1000	else
1001	fdctrl->srb &= ~FD_SRB_DR0;
1002
1003	/* Reset */
1004	if (!(value & FD_DOR_nRESET)) {
1005	if (fdctrl->dor & FD_DOR_nRESET) {
1006	FLOPPY_DPRINTF("controller enter RESET state\n");
1007	}
1008	} else {
1009	if (!(fdctrl->dor & FD_DOR_nRESET)) {
1010	FLOPPY_DPRINTF("controller out of RESET state\n");
1011	fdctrl_reset(fdctrl, 1);
1012	fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1013	}
1014	}
1015	/* Selected drive */
1016	fdctrl->cur_drv = value & FD_DOR_SELMASK;
1017
1018	fdctrl->dor = value;
1019	}
1020
1021	/* Tape drive register : 0x03 */
1022	static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
1023	{
1024	uint32_t retval = fdctrl->tdr;
1025
1026	FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
1027
1028	return retval;
1029	}
1030
1031	static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
1032	{
1033	/* Reset mode */
1034	if (!(fdctrl->dor & FD_DOR_nRESET)) {
1035	FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1036	return;
1037	}
1038	FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
1039	/* Disk boot selection indicator */
1040	fdctrl->tdr = value & FD_TDR_BOOTSEL;
1041	/* Tape indicators: never allow */
1042	}
1043
1044	/* Main status register : 0x04 (read) */
1045	static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
1046	{
1047	uint32_t retval = fdctrl->msr;
1048
1049	fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1050	fdctrl->dor \|= FD_DOR_nRESET;
1051
1052	FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
1053
1054	return retval;
1055	}
1056
1057	/* Data select rate register : 0x04 (write) */
1058	static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
1059	{
1060	/* Reset mode */
1061	if (!(fdctrl->dor & FD_DOR_nRESET)) {
1062	FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1063	return;
1064	}
1065	FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
1066	/* Reset: autoclear */
1067	if (value & FD_DSR_SWRESET) {
1068	fdctrl->dor &= ~FD_DOR_nRESET;
1069	fdctrl_reset(fdctrl, 1);
1070	fdctrl->dor \|= FD_DOR_nRESET;
1071	}
1072	if (value & FD_DSR_PWRDOWN) {
1073	fdctrl_reset(fdctrl, 1);
1074	}
1075	fdctrl->dsr = value;
1076	}
1077
1078	/* Configuration control register : 0x07 (write) */
1079	static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
1080	{
1081	/* Reset mode */
1082	if (!(fdctrl->dor & FD_DOR_nRESET)) {
1083	FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1084	return;
1085	}
1086	FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1087
1088	/* Only the rate selection bits used in AT mode, and we
1089	* store those in the DSR.
1090	*/
1091	fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) \| (value & FD_DSR_DRATEMASK);
1092	}
1093
1094	static int fdctrl_media_changed(fdrive_t *drv)
1095	{
1096	#ifdef VBOX
1097	return drv->dsk_chg;
1098	#else
1099	int ret;
1100
1101	if (!drv->bs)
1102	return 0;
1103	ret = bdrv_media_changed(drv->bs);
1104	if (ret) {
1105	fd_revalidate(drv);
1106	}
1107	return ret;
1108	#endif
1109	}
1110
1111	/* Digital input register : 0x07 (read-only) */
1112	static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1113	{
1114	uint32_t retval = 0;
1115
1116	#ifdef VBOX
1117	/* The change line signal is reported by the currently selected
1118	* drive. If the corresponding motor on bit is not set, the drive
1119	* is not selected!
1120	*/
1121	if (fdctrl_media_changed(get_cur_drv(fdctrl))
1122	&& (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1123	#else
1124	if (fdctrl_media_changed(drv0(fdctrl))
1125	\|\| fdctrl_media_changed(drv1(fdctrl))
1126	#if MAX_FD == 4
1127	\|\| fdctrl_media_changed(drv2(fdctrl))
1128	\|\| fdctrl_media_changed(drv3(fdctrl))
1129	#endif
1130	)
1131	#endif
1132	retval \|= FD_DIR_DSKCHG;
1133	if (retval != 0)
1134	FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1135
1136	return retval;
1137	}
1138
1139	/* FIFO state control */
1140	static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1141	{
1142	fdctrl->data_dir = FD_DIR_WRITE;
1143	fdctrl->data_pos = 0;
1144	fdctrl->msr &= ~(FD_MSR_CMDBUSY \| FD_MSR_DIO);
1145	}
1146
1147	/* Set FIFO status for the host to read */
1148	static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1149	{
1150	fdctrl->data_dir = FD_DIR_READ;
1151	fdctrl->data_len = fifo_len;
1152	fdctrl->data_pos = 0;
1153	fdctrl->msr \|= FD_MSR_CMDBUSY \| FD_MSR_RQM \| FD_MSR_DIO;
1154	if (do_irq)
1155	fdctrl_raise_irq(fdctrl, 0x00);
1156	}
1157
1158	/* Set an error: unimplemented/unknown command */
1159	static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1160	{
1161	FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1162	fdctrl->fifo[0] = FD_SR0_INVCMD;
1163	fdctrl_set_fifo(fdctrl, 1, 0);
1164	}
1165
1166	/* Seek to next sector */
1167	static int fdctrl_seek_to_next_sect(fdctrl_t fdctrl, fdrive_t cur_drv)
1168	{
1169	FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1170	cur_drv->head, cur_drv->track, cur_drv->sect,
1171	fd_sector(cur_drv));
1172	/* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1173	error in fact */
1174	if (cur_drv->sect >= cur_drv->last_sect \|\|
1175	cur_drv->sect == fdctrl->eot) {
1176	cur_drv->sect = 1;
1177	if (FD_MULTI_TRACK(fdctrl->data_state)) {
1178	if (cur_drv->head == 0 &&
1179	(cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1180	cur_drv->head = 1;
1181	} else {
1182	cur_drv->head = 0;
1183	cur_drv->ltrk++;
1184	if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1185	return 0;
1186	}
1187	} else {
1188	cur_drv->ltrk++;
1189	return 0;
1190	}
1191	FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1192	cur_drv->head, cur_drv->track,
1193	cur_drv->sect, fd_sector(cur_drv));
1194	} else {
1195	cur_drv->sect++;
1196	}
1197	return 1;
1198	}
1199
1200	/* Callback for transfer end (stop or abort) */
1201	static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1202	uint8_t status1, uint8_t status2)
1203	{
1204	fdrive_t *cur_drv;
1205
1206	cur_drv = get_cur_drv(fdctrl);
1207	FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1208	status0, status1, status2,
1209	status0 \| (cur_drv->head << 2) \| GET_CUR_DRV(fdctrl));
1210	fdctrl->fifo[0] = status0 \| (cur_drv->head << 2) \| GET_CUR_DRV(fdctrl);
1211	fdctrl->fifo[1] = status1;
1212	fdctrl->fifo[2] = status2;
1213	fdctrl->fifo[3] = cur_drv->ltrk;
1214	fdctrl->fifo[4] = cur_drv->head;
1215	fdctrl->fifo[5] = cur_drv->sect;
1216	fdctrl->fifo[6] = FD_SECTOR_SC;
1217	FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1218	fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1219	fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1220
1221	fdctrl->data_dir = FD_DIR_READ;
1222	if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1223	#ifdef VBOX
1224	PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1225	#else
1226	DMA_release_DREQ(fdctrl->dma_chann);
1227	#endif
1228	}
1229	fdctrl->msr \|= FD_MSR_RQM \| FD_MSR_DIO;
1230	fdctrl->msr &= ~FD_MSR_NONDMA;
1231	fdctrl_set_fifo(fdctrl, 7, 1);
1232	}
1233
1234	/* Prepare a data transfer (either DMA or FIFO) */
1235	static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1236	{
1237	fdrive_t *cur_drv;
1238	uint8_t kh, kt, ks;
1239	int did_seek = 0;
1240
1241	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1242	cur_drv = get_cur_drv(fdctrl);
1243	kt = fdctrl->fifo[2];
1244	kh = fdctrl->fifo[3];
1245	ks = fdctrl->fifo[4];
1246	FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1247	GET_CUR_DRV(fdctrl), kh, kt, ks,
1248	fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1249	FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1250	fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1251	fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1252	fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1253	switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1254	case 2:
1255	/* sect too big */
1256	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1257	fdctrl->fifo[3] = kt;
1258	fdctrl->fifo[4] = kh;
1259	fdctrl->fifo[5] = ks;
1260	return;
1261	case 3:
1262	/* track too big */
1263	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1264	fdctrl->fifo[3] = kt;
1265	fdctrl->fifo[4] = kh;
1266	fdctrl->fifo[5] = ks;
1267	return;
1268	case 4:
1269	/* No seek enabled */
1270	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1271	fdctrl->fifo[3] = kt;
1272	fdctrl->fifo[4] = kh;
1273	fdctrl->fifo[5] = ks;
1274	return;
1275	case 5:
1276	/* No disk in drive */
1277	///@todo: This is wrong! Command should not complete.
1278	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| 0x08, /FD_SR1_MA \|/ FD_SR1_ND, 0x00);
1279	fdctrl->fifo[3] = kt;
1280	fdctrl->fifo[4] = kh;
1281	fdctrl->fifo[5] = ks;
1282	return;
1283	case 1:
1284	did_seek = 1;
1285	break;
1286	default:
1287	break;
1288	}
1289	/* Check the data rate. If the programmed data rate does not match
1290	* the currently inserted medium, the operation has to fail.
1291	*/
1292	#ifdef VBOX
1293	if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1294	FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1295	fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1296	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1297	fdctrl->fifo[3] = kt;
1298	fdctrl->fifo[4] = kh;
1299	fdctrl->fifo[5] = ks;
1300	return;
1301	}
1302	#endif
1303	/* Set the FIFO state */
1304	fdctrl->data_dir = direction;
1305	fdctrl->data_pos = 0;
1306	fdctrl->msr \|= FD_MSR_CMDBUSY;
1307	if (fdctrl->fifo[0] & 0x80)
1308	fdctrl->data_state \|= FD_STATE_MULTI;
1309	else
1310	fdctrl->data_state &= ~FD_STATE_MULTI;
1311	if (did_seek)
1312	fdctrl->data_state \|= FD_STATE_SEEK;
1313	else
1314	fdctrl->data_state &= ~FD_STATE_SEEK;
1315	if (fdctrl->fifo[5] == 00) {
1316	fdctrl->data_len = fdctrl->fifo[8];
1317	} else {
1318	int tmp;
1319	fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1320	tmp = (fdctrl->fifo[6] - ks + 1);
1321	if (fdctrl->fifo[0] & 0x80)
1322	tmp += fdctrl->fifo[6];
1323	fdctrl->data_len *= tmp;
1324	}
1325	fdctrl->eot = fdctrl->fifo[6];
1326	if (fdctrl->dor & FD_DOR_DMAEN) {
1327	int dma_mode;
1328	/* DMA transfer are enabled. Check if DMA channel is well programmed */
1329	#ifndef VBOX
1330	dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1331	#else
1332	dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1333	#endif
1334	dma_mode = (dma_mode >> 2) & 3;
1335	FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1336	dma_mode, direction,
1337	(128 << fdctrl->fifo[5]) *
1338	(cur_drv->last_sect - ks + 1), fdctrl->data_len);
1339	if (((direction == FD_DIR_SCANE \|\| direction == FD_DIR_SCANL \|\|
1340	direction == FD_DIR_SCANH) && dma_mode == 0) \|\|
1341	(direction == FD_DIR_WRITE && dma_mode == 2) \|\|
1342	(direction == FD_DIR_READ && (dma_mode == 1 \|\| dma_mode == 0))) {
1343	/* No access is allowed until DMA transfer has completed */
1344	fdctrl->msr &= ~FD_MSR_RQM;
1345	/* Now, we just have to wait for the DMA controller to
1346	* recall us...
1347	*/
1348	#ifndef VBOX
1349	DMA_hold_DREQ(fdctrl->dma_chann);
1350	DMA_schedule(fdctrl->dma_chann);
1351	#else
1352	PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1353	PDMDevHlpDMASchedule (fdctrl->pDevIns);
1354	#endif
1355	return;
1356	} else {
1357	FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1358	}
1359	}
1360	FLOPPY_DPRINTF("start non-DMA transfer\n");
1361	fdctrl->msr \|= FD_MSR_NONDMA;
1362	if (direction != FD_DIR_WRITE)
1363	fdctrl->msr \|= FD_MSR_DIO;
1364	/* IO based transfer: calculate len */
1365	fdctrl_raise_irq(fdctrl, 0x00);
1366
1367	return;
1368	}
1369
1370	/* Prepare a format data transfer (either DMA or FIFO) */
1371	static void fdctrl_start_format(fdctrl_t *fdctrl)
1372	{
1373	fdrive_t *cur_drv;
1374	uint8_t ns, dp, kh, kt, ks;
1375
1376	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1377	cur_drv = get_cur_drv(fdctrl);
1378	kt = cur_drv->track;
1379	kh = (fdctrl->fifo[1] & 0x04) >> 2;
1380	ns = fdctrl->fifo[3];
1381	dp = fdctrl->fifo[5];
1382	ks = 1;
1383	FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1384	GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1385	fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1386	switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1387	case 2:
1388	/* sect too big */
1389	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1390	fdctrl->fifo[3] = kt;
1391	fdctrl->fifo[4] = kh;
1392	fdctrl->fifo[5] = ks;
1393	return;
1394	case 3:
1395	/* track too big */
1396	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1397	fdctrl->fifo[3] = kt;
1398	fdctrl->fifo[4] = kh;
1399	fdctrl->fifo[5] = ks;
1400	return;
1401	case 4:
1402	/* No seek enabled */
1403	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1404	fdctrl->fifo[3] = kt;
1405	fdctrl->fifo[4] = kh;
1406	fdctrl->fifo[5] = ks;
1407	return;
1408	case 5:
1409	/* No disk in drive */
1410	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1411	fdctrl->fifo[3] = kt;
1412	fdctrl->fifo[4] = kh;
1413	fdctrl->fifo[5] = ks;
1414	return;
1415	case 1:
1416	break;
1417	default:
1418	break;
1419	}
1420	/* It's not clear what should happen if the data rate does not match. */
1421	#if 0
1422	/* Check the data rate. If the programmed data rate does not match
1423	* the currently inserted medium, the operation has to fail.
1424	*/
1425	if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1426	FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1427	fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1428	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1429	fdctrl->fifo[3] = kt;
1430	fdctrl->fifo[4] = kh;
1431	fdctrl->fifo[5] = ks;
1432	return;
1433	}
1434	#endif
1435	/* Set the FIFO state */
1436	fdctrl->data_dir = FD_DIR_FORMAT;
1437	fdctrl->data_pos = 0;
1438	fdctrl->msr \|= FD_MSR_CMDBUSY;
1439	fdctrl->data_state &= ~(FD_STATE_MULTI \| FD_STATE_SEEK);
1440	fdctrl->data_len = ns * 4;
1441	fdctrl->eot = ns;
1442	if (fdctrl->dor & FD_DOR_DMAEN) {
1443	int dma_mode;
1444	/* DMA transfer are enabled. Check if DMA channel is well programmed */
1445	#ifndef VBOX
1446	dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1447	#else
1448	dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1449	#endif
1450	dma_mode = (dma_mode >> 2) & 3;
1451	FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1452	dma_mode, fdctrl->data_dir,
1453	(128 << fdctrl->fifo[2]) *
1454	(cur_drv->last_sect + 1), fdctrl->data_len);
1455	if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1456	/* No access is allowed until DMA transfer has completed */
1457	fdctrl->msr &= ~FD_MSR_RQM;
1458	/* Now, we just have to wait for the DMA controller to
1459	* recall us...
1460	*/
1461	#ifndef VBOX
1462	DMA_hold_DREQ(fdctrl->dma_chann);
1463	DMA_schedule(fdctrl->dma_chann);
1464	#else
1465	PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1466	PDMDevHlpDMASchedule (fdctrl->pDevIns);
1467	#endif
1468	return;
1469	} else {
1470	FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1471	}
1472	}
1473	FLOPPY_DPRINTF("start non-DMA format\n");
1474	fdctrl->msr \|= FD_MSR_NONDMA;
1475	/* IO based transfer: calculate len */
1476	fdctrl_raise_irq(fdctrl, 0x00);
1477
1478	return;
1479	}
1480
1481	/* Prepare a transfer of deleted data */
1482	static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1483	{
1484	FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1485
1486	/* We don't handle deleted data,
1487	* so we don't return ANYTHING
1488	*/
1489	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1490	}
1491
1492	#ifdef VBOX
1493	/* Block driver read/write wrappers. */
1494
1495	static int blk_write(fdrive_t drv, int64_t sector_num, const uint8_t buf, int nb_sectors)
1496	{
1497	int rc;
1498
1499	drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1500
1501	rc = drv->pDrvMedia->pfnWrite(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1502	buf, nb_sectors * FD_SECTOR_LEN);
1503
1504	drv->Led.Actual.s.fWriting = 0;
1505	if (RT_FAILURE(rc))
1506	AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1507
1508	return rc;
1509	}
1510
1511	static int blk_read(fdrive_t drv, int64_t sector_num, uint8_t buf, int nb_sectors)
1512	{
1513	int rc;
1514
1515	drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1516
1517	rc = drv->pDrvMedia->pfnRead(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1518	buf, nb_sectors * FD_SECTOR_LEN);
1519
1520	drv->Led.Actual.s.fReading = 0;
1521
1522	if (RT_FAILURE(rc))
1523	AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1524
1525	return rc;
1526	}
1527
1528	#endif
1529
1530	/* handlers for DMA transfers */
1531	#ifdef VBOX
1532	static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
1533	void *opaque,
1534	unsigned nchan,
1535	uint32_t dma_pos,
1536	uint32_t dma_len)
1537	#else
1538	static int fdctrl_transfer_handler (void *opaque, int nchan,
1539	int dma_pos, int dma_len)
1540	#endif
1541	{
1542	fdctrl_t *fdctrl;
1543	fdrive_t *cur_drv;
1544	#ifdef VBOX
1545	int rc;
1546	uint32_t len = 0;
1547	uint32_t start_pos, rel_pos;
1548	#else
1549	int len, start_pos, rel_pos;
1550	#endif
1551	uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1552
1553	fdctrl = (fdctrl_t *)opaque;
1554	if (fdctrl->msr & FD_MSR_RQM) {
1555	FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1556	return 0;
1557	}
1558	cur_drv = get_cur_drv(fdctrl);
1559	if (fdctrl->data_dir == FD_DIR_SCANE \|\| fdctrl->data_dir == FD_DIR_SCANL \|\|
1560	fdctrl->data_dir == FD_DIR_SCANH)
1561	status2 = FD_SR2_SNS;
1562	if (dma_len > fdctrl->data_len)
1563	dma_len = fdctrl->data_len;
1564	#ifndef VBOX
1565	if (cur_drv->bs == NULL)
1566	#else /* !VBOX */
1567	if (cur_drv->pDrvMedia == NULL)
1568	#endif
1569	{
1570	if (fdctrl->data_dir == FD_DIR_WRITE)
1571	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1572	else
1573	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1574	Assert(len == 0);
1575	goto transfer_error;
1576	}
1577
1578	#ifdef VBOX
1579	if (cur_drv->ro)
1580	{
1581	if (fdctrl->data_dir == FD_DIR_WRITE \|\| fdctrl->data_dir == FD_DIR_FORMAT)
1582	{
1583	/* Handle readonly medium early, no need to do DMA, touch the
1584	* LED or attempt any writes. A real floppy doesn't attempt
1585	* to write to readonly media either. */
1586	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, FD_SR1_NW,
1587	0x00);
1588	Assert(len == 0);
1589	goto transfer_error;
1590	}
1591	}
1592	#endif
1593
1594
1595	rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1596	for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1597	len = dma_len - fdctrl->data_pos;
1598	if (len + rel_pos > FD_SECTOR_LEN)
1599	len = FD_SECTOR_LEN - rel_pos;
1600	FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1601	"(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1602	fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1603	cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1604	fd_sector(cur_drv) * FD_SECTOR_LEN);
1605	if (fdctrl->data_dir != FD_DIR_FORMAT &&
1606	(fdctrl->data_dir != FD_DIR_WRITE \|\|
1607	len < FD_SECTOR_LEN \|\| rel_pos != 0)) {
1608	/* READ & SCAN commands and realign to a sector for WRITE */
1609	#ifdef VBOX
1610	rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1611	if (RT_FAILURE(rc))
1612	#else
1613	if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1614	fdctrl->fifo, 1) < 0)
1615	#endif
1616	{
1617	FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1618	fd_sector(cur_drv));
1619	/* Sure, image size is too small... */
1620	memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1621	}
1622	}
1623	switch (fdctrl->data_dir) {
1624	case FD_DIR_READ:
1625	/* READ commands */
1626	#ifdef VBOX
1627	{
1628	uint32_t read;
1629	int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, nchan,
1630	fdctrl->fifo + rel_pos,
1631	fdctrl->data_pos,
1632	len, &read);
1633	AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1634	}
1635	#else
1636	DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1637	fdctrl->data_pos, len);
1638	#endif
1639	/* cpu_physical_memory_write(addr + fdctrl->data_pos, */
1640	/* fdctrl->fifo + rel_pos, len); */
1641	break;
1642	case FD_DIR_WRITE:
1643	/* WRITE commands */
1644	#ifdef VBOX
1645	{
1646	uint32_t written;
1647	int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1648	fdctrl->fifo + rel_pos,
1649	fdctrl->data_pos,
1650	len, &written);
1651	AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1652	}
1653
1654	rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1655	if (RT_FAILURE(rc))
1656	#else
1657	DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1658	fdctrl->data_pos, len);
1659	if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1660	fdctrl->fifo, 1) < 0)
1661	#endif
1662	{
1663	FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1664	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1665	goto transfer_error;
1666	}
1667	break;
1668	#ifdef VBOX
1669	case FD_DIR_FORMAT:
1670	/* FORMAT command */
1671	{
1672	uint8_t eot = fdctrl->fifo[3];
1673	uint8_t filler = fdctrl->fifo[5];
1674	uint32_t written;
1675	int sct;
1676	int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1677	fdctrl->fifo + rel_pos,
1678	fdctrl->data_pos,
1679	len, &written);
1680	AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1681
1682	/* Fill the entire track with desired data pattern. */
1683	FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1684	eot, filler);
1685	memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1686	for (sct = 0; sct < eot; ++sct)
1687	{
1688	rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1689	if (RT_FAILURE(rc))
1690	{
1691	FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1692	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1693	goto transfer_error;
1694	}
1695	fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1696	}
1697	}
1698	break;
1699	#endif
1700	default:
1701	/* SCAN commands */
1702	{
1703	uint8_t tmpbuf[FD_SECTOR_LEN];
1704	int ret;
1705	#ifdef VBOX
1706	uint32_t read;
1707	int rc2 = PDMDevHlpDMAReadMemory (fdctrl->pDevIns, nchan, tmpbuf,
1708	fdctrl->data_pos, len, &read);
1709	AssertMsg (RT_SUCCESS (rc2), ("DMAReadMemory -> %Rrc2\n", rc2));
1710	#else
1711	DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1712	#endif
1713	ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1714	if (ret == 0) {
1715	status2 = FD_SR2_SEH;
1716	goto end_transfer;
1717	}
1718	if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) \|\|
1719	(ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1720	status2 = 0x00;
1721	goto end_transfer;
1722	}
1723	}
1724	break;
1725	}
1726	fdctrl->data_pos += len;
1727	rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1728	if (rel_pos == 0) {
1729	/* Seek to next sector */
1730	if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1731	break;
1732	}
1733	}
1734	end_transfer:
1735	len = fdctrl->data_pos - start_pos;
1736	FLOPPY_DPRINTF("end transfer %d %d %d\n",
1737	fdctrl->data_pos, len, fdctrl->data_len);
1738	if (fdctrl->data_dir == FD_DIR_SCANE \|\|
1739	fdctrl->data_dir == FD_DIR_SCANL \|\|
1740	fdctrl->data_dir == FD_DIR_SCANH)
1741	status2 = FD_SR2_SEH;
1742	if (FD_DID_SEEK(fdctrl->data_state))
1743	status0 \|= FD_SR0_SEEK;
1744	fdctrl->data_len -= len;
1745	fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1746	transfer_error:
1747
1748	return len;
1749	}
1750
1751	/* Data register : 0x05 */
1752	static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1753	{
1754	fdrive_t *cur_drv;
1755	uint32_t retval = 0;
1756	unsigned pos;
1757	#ifdef VBOX
1758	int rc;
1759	#endif
1760
1761	cur_drv = get_cur_drv(fdctrl);
1762	fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1763	if (!(fdctrl->msr & FD_MSR_RQM) \|\| !(fdctrl->msr & FD_MSR_DIO)) {
1764	FLOPPY_ERROR("controller not ready for reading\n");
1765	return 0;
1766	}
1767	pos = fdctrl->data_pos % FD_SECTOR_LEN;
1768	if (fdctrl->msr & FD_MSR_NONDMA) {
1769	if (pos == 0) {
1770	if (fdctrl->data_pos != 0)
1771	if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1772	FLOPPY_DPRINTF("error seeking to next sector %d\n",
1773	fd_sector(cur_drv));
1774	return 0;
1775	}
1776	#ifdef VBOX
1777	rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1778	if (RT_FAILURE(rc))
1779	#else
1780	if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0)
1781	#endif
1782	{
1783	FLOPPY_DPRINTF("error getting sector %d\n",
1784	fd_sector(cur_drv));
1785	/* Sure, image size is too small... */
1786	memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1787	}
1788	}
1789	}
1790	retval = fdctrl->fifo[pos];
1791	if (++fdctrl->data_pos == fdctrl->data_len) {
1792	fdctrl->data_pos = 0;
1793	/* Switch from transfer mode to status mode
1794	* then from status mode to command mode
1795	*/
1796	if (fdctrl->msr & FD_MSR_NONDMA) {
1797	fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1798	} else {
1799	fdctrl_reset_fifo(fdctrl);
1800	fdctrl_reset_irq(fdctrl);
1801	}
1802	}
1803	FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1804
1805	return retval;
1806	}
1807
1808	static void fdctrl_format_sector(fdctrl_t *fdctrl)
1809	{
1810	fdrive_t *cur_drv;
1811	uint8_t kh, kt, ks;
1812	#ifdef VBOX
1813	int ok = 0, rc;
1814	#endif
1815
1816	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1817	cur_drv = get_cur_drv(fdctrl);
1818	kt = fdctrl->fifo[6];
1819	kh = fdctrl->fifo[7];
1820	ks = fdctrl->fifo[8];
1821	FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1822	GET_CUR_DRV(fdctrl), kh, kt, ks,
1823	fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1824	switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1825	case 2:
1826	/* sect too big */
1827	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1828	fdctrl->fifo[3] = kt;
1829	fdctrl->fifo[4] = kh;
1830	fdctrl->fifo[5] = ks;
1831	return;
1832	case 3:
1833	/* track too big */
1834	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1835	fdctrl->fifo[3] = kt;
1836	fdctrl->fifo[4] = kh;
1837	fdctrl->fifo[5] = ks;
1838	return;
1839	case 4:
1840	/* No seek enabled */
1841	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1842	fdctrl->fifo[3] = kt;
1843	fdctrl->fifo[4] = kh;
1844	fdctrl->fifo[5] = ks;
1845	return;
1846	case 5:
1847	/* No disk in drive */
1848	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1849	fdctrl->fifo[3] = kt;
1850	fdctrl->fifo[4] = kh;
1851	fdctrl->fifo[5] = ks;
1852	return;
1853	case 1:
1854	fdctrl->data_state \|= FD_STATE_SEEK;
1855	break;
1856	default:
1857	break;
1858	}
1859	memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1860	#ifdef VBOX
1861	if (cur_drv->pDrvMedia) {
1862	rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1863	if (RT_FAILURE (rc)) {
1864	FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1865	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1866	} else {
1867	ok = 1;
1868	}
1869	}
1870	if (ok) {
1871	#else
1872	if (cur_drv->bs == NULL \|\|
1873	bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1874	FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1875	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK, 0x00, 0x00);
1876	} else {
1877	#endif
1878	if (cur_drv->sect == cur_drv->last_sect) {
1879	fdctrl->data_state &= ~FD_STATE_FORMAT;
1880	/* Last sector done */
1881	if (FD_DID_SEEK(fdctrl->data_state))
1882	fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1883	else
1884	fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1885	} else {
1886	/* More to do */
1887	fdctrl->data_pos = 0;
1888	fdctrl->data_len = 4;
1889	}
1890	}
1891	}
1892
1893	static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1894	{
1895	fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1896	fdctrl->fifo[0] = fdctrl->lock << 4;
1897	fdctrl_set_fifo(fdctrl, 1, 0);
1898	}
1899
1900	static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1901	{
1902	fdrive_t *cur_drv = get_cur_drv(fdctrl);
1903
1904	/* Drives position */
1905	fdctrl->fifo[0] = drv0(fdctrl)->track;
1906	fdctrl->fifo[1] = drv1(fdctrl)->track;
1907	#if MAX_FD == 4
1908	fdctrl->fifo[2] = drv2(fdctrl)->track;
1909	fdctrl->fifo[3] = drv3(fdctrl)->track;
1910	#else
1911	fdctrl->fifo[2] = 0;
1912	fdctrl->fifo[3] = 0;
1913	#endif
1914	/* timers */
1915	fdctrl->fifo[4] = fdctrl->timer0;
1916	fdctrl->fifo[5] = (fdctrl->timer1 << 1) \| (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1917	fdctrl->fifo[6] = cur_drv->last_sect;
1918	fdctrl->fifo[7] = (fdctrl->lock << 7) \|
1919	(cur_drv->perpendicular << 2);
1920	fdctrl->fifo[8] = fdctrl->config;
1921	fdctrl->fifo[9] = fdctrl->precomp_trk;
1922	fdctrl_set_fifo(fdctrl, 10, 0);
1923	}
1924
1925	static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1926	{
1927	/* Controller's version */
1928	fdctrl->fifo[0] = fdctrl->version;
1929	fdctrl_set_fifo(fdctrl, 1, 0);
1930	}
1931
1932	static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1933	{
1934	fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1935	fdctrl_set_fifo(fdctrl, 1, 0);
1936	}
1937
1938	static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1939	{
1940	fdrive_t *cur_drv = get_cur_drv(fdctrl);
1941
1942	/* Drives position */
1943	drv0(fdctrl)->track = fdctrl->fifo[3];
1944	drv1(fdctrl)->track = fdctrl->fifo[4];
1945	#if MAX_FD == 4
1946	drv2(fdctrl)->track = fdctrl->fifo[5];
1947	drv3(fdctrl)->track = fdctrl->fifo[6];
1948	#endif
1949	/* timers */
1950	fdctrl->timer0 = fdctrl->fifo[7];
1951	fdctrl->timer1 = fdctrl->fifo[8];
1952	cur_drv->last_sect = fdctrl->fifo[9];
1953	fdctrl->lock = fdctrl->fifo[10] >> 7;
1954	cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1955	fdctrl->config = fdctrl->fifo[11];
1956	fdctrl->precomp_trk = fdctrl->fifo[12];
1957	fdctrl->pwrd = fdctrl->fifo[13];
1958	fdctrl_reset_fifo(fdctrl);
1959	}
1960
1961	static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1962	{
1963	fdrive_t *cur_drv = get_cur_drv(fdctrl);
1964
1965	fdctrl->fifo[0] = 0;
1966	fdctrl->fifo[1] = 0;
1967	/* Drives position */
1968	fdctrl->fifo[2] = drv0(fdctrl)->track;
1969	fdctrl->fifo[3] = drv1(fdctrl)->track;
1970	#if MAX_FD == 4
1971	fdctrl->fifo[4] = drv2(fdctrl)->track;
1972	fdctrl->fifo[5] = drv3(fdctrl)->track;
1973	#else
1974	fdctrl->fifo[4] = 0;
1975	fdctrl->fifo[5] = 0;
1976	#endif
1977	/* timers */
1978	fdctrl->fifo[6] = fdctrl->timer0;
1979	fdctrl->fifo[7] = fdctrl->timer1;
1980	fdctrl->fifo[8] = cur_drv->last_sect;
1981	fdctrl->fifo[9] = (fdctrl->lock << 7) \|
1982	(cur_drv->perpendicular << 2);
1983	fdctrl->fifo[10] = fdctrl->config;
1984	fdctrl->fifo[11] = fdctrl->precomp_trk;
1985	fdctrl->fifo[12] = fdctrl->pwrd;
1986	fdctrl->fifo[13] = 0;
1987	fdctrl->fifo[14] = 0;
1988	fdctrl_set_fifo(fdctrl, 15, 0);
1989	}
1990
1991	static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1992	{
1993	fdrive_t *cur_drv = get_cur_drv(fdctrl);
1994
1995	FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1996
1997	fdctrl->msr &= ~FD_MSR_RQM;
1998	cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1999	#ifdef VBOX
2000	TMTimerSetMillies(fdctrl->result_timer, 1000 / 50);
2001	#else
2002	qemu_mod_timer(fdctrl->result_timer,
2003	qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
2004	#endif
2005	}
2006
2007	static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
2008	{
2009	fdrive_t *cur_drv;
2010	uint8_t ns, dp;
2011
2012	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2013	cur_drv = get_cur_drv(fdctrl);
2014	fdctrl->data_state &= ~(FD_STATE_MULTI \| FD_STATE_SEEK);
2015	ns = fdctrl->fifo[3];
2016	dp = fdctrl->fifo[5];
2017
2018	FLOPPY_DPRINTF("Format track %d at %d, %d sectors, filler %02x\n",
2019	cur_drv->track, GET_CUR_DRV(fdctrl), ns, dp);
2020	FLOPPY_DPRINTF("CMD:%02x SEL:%02x N:%02x SC:%02x GPL:%02x D:%02x\n",
2021	fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
2022	fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5]);
2023
2024	/* Since we cannot actually format anything, we have to make sure that
2025	* whatever new format the guest is trying to establish matches the
2026	* existing format of the medium.
2027	*/
2028	if (cur_drv->last_sect != ns \|\| fdctrl->fifo[2] != 2)
2029	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_NW, 0);
2030	else
2031	{
2032	cur_drv->bps = fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
2033	cur_drv->last_sect = ns;
2034
2035	fdctrl_start_format(fdctrl);
2036	}
2037	}
2038
2039	static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
2040	{
2041	fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
2042	fdctrl->timer1 = fdctrl->fifo[2] >> 1;
2043	if (fdctrl->fifo[2] & 1)
2044	fdctrl->dor &= ~FD_DOR_DMAEN;
2045	else
2046	fdctrl->dor \|= FD_DOR_DMAEN;
2047	/* No result back */
2048	fdctrl_reset_fifo(fdctrl);
2049	}
2050
2051	static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
2052	{
2053	fdrive_t *cur_drv;
2054
2055	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2056	cur_drv = get_cur_drv(fdctrl);
2057	cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2058	/* 1 Byte status back */
2059	fdctrl->fifo[0] = (cur_drv->ro << 6) \|
2060	(cur_drv->track == 0 ? 0x10 : 0x00) \|
2061	(cur_drv->head << 2) \|
2062	GET_CUR_DRV(fdctrl) \|
2063	0x28;
2064	fdctrl_set_fifo(fdctrl, 1, 0);
2065	}
2066
2067	static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
2068	{
2069	fdrive_t *cur_drv;
2070	uint8_t st0;
2071
2072	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2073	cur_drv = get_cur_drv(fdctrl);
2074	fd_recalibrate(cur_drv);
2075	fdctrl_reset_fifo(fdctrl);
2076	st0 = FD_SR0_SEEK \| GET_CUR_DRV(fdctrl);
2077	/* No drive means no TRK0 signal. */
2078	if (cur_drv->drive == FDRIVE_DRV_NONE)
2079	st0 \|= FD_SR0_ABNTERM \| FD_SR0_EQPMT;
2080	/* Raise Interrupt */
2081	fdctrl_raise_irq(fdctrl, st0);
2082	}
2083
2084	static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
2085	{
2086	fdrive_t *cur_drv = get_cur_drv(fdctrl);
2087
2088	FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
2089	if(fdctrl->reset_sensei > 0) {
2090	fdctrl->fifo[0] =
2091	FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
2092	fdctrl->reset_sensei--;
2093	} else {
2094	/* XXX: status0 handling is broken for read/write
2095	commands, so we do this hack. It should be suppressed
2096	ASAP */
2097	fdctrl->fifo[0] =
2098	FD_SR0_SEEK \| (cur_drv->head << 2) \| GET_CUR_DRV(fdctrl);
2099	/* Hack to preserve SR0 on equipment check failures (no drive). */
2100	if (fdctrl->status0 & FD_SR0_EQPMT)
2101	fdctrl->fifo[0] = fdctrl->status0;
2102	}
2103
2104	fdctrl->fifo[1] = cur_drv->track;
2105	fdctrl_set_fifo(fdctrl, 2, 0);
2106	FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
2107	fdctrl->status0 = FD_SR0_RDYCHG;
2108	}
2109
2110	static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
2111	{
2112	fdrive_t *cur_drv;
2113
2114	FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
2115	fdctrl->fifo[1], fdctrl->fifo[2]);
2116
2117	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2118	cur_drv = get_cur_drv(fdctrl);
2119	fdctrl_reset_fifo(fdctrl);
2120	#ifdef VBOX
2121	/* The seek command just sends step pulses to the drive and doesn't care if
2122	* there's a medium inserted or if it's banging the head against the drive.
2123	*/
2124	cur_drv->track = fdctrl->fifo[2];
2125	cur_drv->ltrk = cur_drv->track;
2126	cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2127	/* Raise Interrupt */
2128	fdctrl_raise_irq(fdctrl, FD_SR0_SEEK \| GET_CUR_DRV(fdctrl));
2129	#else
2130	if (fdctrl->fifo[2] > cur_drv->max_track) {
2131	fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM \| FD_SR0_SEEK);
2132	} else {
2133	cur_drv->track = fdctrl->fifo[2];
2134	/* Raise Interrupt */
2135	fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2136	}
2137	#endif
2138	}
2139
2140	static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
2141	{
2142	fdrive_t *cur_drv = get_cur_drv(fdctrl);
2143
2144	if (fdctrl->fifo[1] & 0x80)
2145	cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
2146	/* No result back */
2147	fdctrl_reset_fifo(fdctrl);
2148	}
2149
2150	static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
2151	{
2152	fdctrl->config = fdctrl->fifo[2];
2153	fdctrl->precomp_trk = fdctrl->fifo[3];
2154	/* No result back */
2155	fdctrl_reset_fifo(fdctrl);
2156	}
2157
2158	static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
2159	{
2160	fdctrl->pwrd = fdctrl->fifo[1];
2161	fdctrl->fifo[0] = fdctrl->fifo[1];
2162	fdctrl_set_fifo(fdctrl, 1, 0);
2163	}
2164
2165	static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
2166	{
2167	/* No result back */
2168	fdctrl_reset_fifo(fdctrl);
2169	}
2170
2171	static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
2172	{
2173	fdrive_t *cur_drv = get_cur_drv(fdctrl);
2174
2175	/* This command takes a variable number of parameters. It can be terminated
2176	* at any time if the high bit of a parameter is set. Once there are 6 bytes
2177	* in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
2178	*/
2179	if (fdctrl->data_len == 7 \|\| (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
2180
2181	/* Command parameters done */
2182	if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
2183	/* Data is echoed, but not stored! */
2184	fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
2185	fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
2186	fdctrl->fifo[2] = 0;
2187	fdctrl->fifo[3] = 0;
2188	fdctrl_set_fifo(fdctrl, 4, 0);
2189	} else {
2190	fdctrl_reset_fifo(fdctrl);
2191	}
2192	} else
2193	fdctrl->data_len++; /* Wait for another byte. */
2194	}
2195
2196	static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2197	{
2198	fdrive_t *cur_drv;
2199
2200	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2201	cur_drv = get_cur_drv(fdctrl);
2202	if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2203	cur_drv->track = cur_drv->max_track - 1;
2204	} else {
2205	cur_drv->track += fdctrl->fifo[2];
2206	}
2207	fdctrl_reset_fifo(fdctrl);
2208	/* Raise Interrupt */
2209	fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2210	}
2211
2212	static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2213	{
2214	fdrive_t *cur_drv;
2215
2216	SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2217	cur_drv = get_cur_drv(fdctrl);
2218	if (fdctrl->fifo[2] > cur_drv->track) {
2219	cur_drv->track = 0;
2220	} else {
2221	cur_drv->track -= fdctrl->fifo[2];
2222	}
2223	fdctrl_reset_fifo(fdctrl);
2224	/* Raise Interrupt */
2225	fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2226	}
2227
2228	static const struct {
2229	uint8_t value;
2230	uint8_t mask;
2231	const char* name;
2232	int parameters;
2233	void (handler)(fdctrl_t fdctrl, int direction);
2234	int direction;
2235	} handlers[] = {
2236	{ FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2237	{ FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2238	{ FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2239	{ FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2240	{ FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2241	{ FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2242	{ FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2243	{ FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2244	{ FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2245	{ FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2246	{ FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2247	{ FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2248	{ FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2249	{ FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2250	{ FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2251	{ FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2252	{ FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2253	{ FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2254	{ FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2255	{ FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2256	{ FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2257	{ FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2258	{ FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2259	{ FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2260	{ FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2261	{ FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2262	{ FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2263	{ FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2264	{ FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2265	{ FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2266	{ FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2267	{ 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2268	};
2269	/* Associate command to an index in the 'handlers' array */
2270	static uint8_t command_to_handler[256];
2271
2272	static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2273	{
2274	fdrive_t *cur_drv;
2275	int pos;
2276
2277	cur_drv = get_cur_drv(fdctrl);
2278	/* Reset mode */
2279	if (!(fdctrl->dor & FD_DOR_nRESET)) {
2280	FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2281	return;
2282	}
2283	if (!(fdctrl->msr & FD_MSR_RQM) \|\| (fdctrl->msr & FD_MSR_DIO)) {
2284	FLOPPY_ERROR("controller not ready for writing\n");
2285	return;
2286	}
2287	fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2288	/* Is it write command time ? */
2289	if (fdctrl->msr & FD_MSR_NONDMA) {
2290	/* FIFO data write */
2291	pos = fdctrl->data_pos++;
2292	pos %= FD_SECTOR_LEN;
2293	fdctrl->fifo[pos] = value;
2294	if (pos == FD_SECTOR_LEN - 1 \|\|
2295	fdctrl->data_pos == fdctrl->data_len) {
2296	#ifdef VBOX
2297	blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2298	#else
2299	bdrv_write(cur_drv->bs, fd_sector(cur_drv),
2300	fdctrl->fifo, 1);
2301	#endif
2302	}
2303	/* Switch from transfer mode to status mode
2304	* then from status mode to command mode
2305	*/
2306	if (fdctrl->data_pos == fdctrl->data_len)
2307	fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2308	return;
2309	}
2310	if (fdctrl->data_pos == 0) {
2311	/* Command */
2312	fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2313	pos = command_to_handler[value & 0xff];
2314	FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2315	fdctrl->data_len = handlers[pos].parameters + 1;
2316	fdctrl->msr \|= FD_MSR_CMDBUSY;
2317	}
2318
2319	FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2320	fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;
2321	if (fdctrl->data_pos == fdctrl->data_len) {
2322	/* We now have all parameters
2323	* and will be able to treat the command
2324	*/
2325	if (fdctrl->data_state & FD_STATE_FORMAT) {
2326	fdctrl_format_sector(fdctrl);
2327	return;
2328	}
2329
2330	pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2331	FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2332	(*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2333	}
2334	}
2335
2336	static void fdctrl_result_timer(void *opaque)
2337	{
2338	fdctrl_t fdctrl = (fdctrl_t )opaque;
2339	fdrive_t *cur_drv = get_cur_drv(fdctrl);
2340
2341	/* Pretend we are spinning.
2342	* This is needed for Coherent, which uses READ ID to check for
2343	* sector interleaving.
2344	*/
2345	if (cur_drv->last_sect != 0) {
2346	cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2347	}
2348	/* READ_ID can't automatically succeed! */
2349	#ifdef VBOX
2350	if (!cur_drv->max_track) {
2351	FLOPPY_DPRINTF("read id when no disk in drive\n");
2352	///@todo: This is wrong! Command should not complete.
2353	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA \| FD_SR1_ND, FD_SR2_MD);
2354	} else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2355	FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2356	fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2357	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA \| FD_SR1_ND, FD_SR2_MD);
2358	} else if (cur_drv->track >= cur_drv->max_track) {
2359	FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2360	cur_drv->track, cur_drv->max_track);
2361	cur_drv->ltrk = 0;
2362	fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA \| FD_SR1_ND, FD_SR2_MD);
2363	}
2364	else
2365	#endif
2366	fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2367	}
2368
2369
2370	#ifdef VBOX
2371
2372	/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2373
2374	/**
2375	* @callback_method_impl{FNTMTIMERDEV}
2376	*/
2377	static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2378	{
2379	fdctrl_t fdctrl = (fdctrl_t )pvUser;
2380	fdctrl_result_timer(fdctrl);
2381	}
2382
2383
2384	/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2385
2386	/**
2387	* @callback_method_impl{FNIOMIOPORTOUT}
2388	*/
2389	static DECLCALLBACK(int) fdcIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
2390	{
2391	if (cb == 1)
2392	fdctrl_write (pvUser, Port & 7, u32);
2393	else
2394	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
2395	return VINF_SUCCESS;
2396	}
2397
2398
2399	/**
2400	* @callback_method_impl{FNIOMIOPORTOUT}
2401	*/
2402	static DECLCALLBACK(int) fdcIoPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
2403	{
2404	if (cb == 1)
2405	{
2406	*pu32 = fdctrl_read (pvUser, Port & 7);
2407	return VINF_SUCCESS;
2408	}
2409	return VERR_IOM_IOPORT_UNUSED;
2410	}
2411
2412
2413	/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2414
2415	/**
2416	* @callback_method_impl{FNSSMDEVSAVEEXEC}
2417	*/
2418	static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2419	{
2420	fdctrl_t pThis = PDMINS_2_DATA(pDevIns, fdctrl_t );
2421	unsigned int i;
2422
2423	/* Save the FDC I/O registers... */
2424	SSMR3PutU8(pSSM, pThis->sra);
2425	SSMR3PutU8(pSSM, pThis->srb);
2426	SSMR3PutU8(pSSM, pThis->dor);
2427	SSMR3PutU8(pSSM, pThis->tdr);
2428	SSMR3PutU8(pSSM, pThis->dsr);
2429	SSMR3PutU8(pSSM, pThis->msr);
2430	/* ...the status registers... */
2431	SSMR3PutU8(pSSM, pThis->status0);
2432	SSMR3PutU8(pSSM, pThis->status1);
2433	SSMR3PutU8(pSSM, pThis->status2);
2434	/* ...the command FIFO... */
2435	SSMR3PutU32(pSSM, sizeof(pThis->fifo));
2436	SSMR3PutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2437	SSMR3PutU32(pSSM, pThis->data_pos);
2438	SSMR3PutU32(pSSM, pThis->data_len);
2439	SSMR3PutU8(pSSM, pThis->data_state);
2440	SSMR3PutU8(pSSM, pThis->data_dir);
2441	/* ...and miscellaneous internal FDC state. */
2442	SSMR3PutU8(pSSM, pThis->reset_sensei);
2443	SSMR3PutU8(pSSM, pThis->eot);
2444	SSMR3PutU8(pSSM, pThis->timer0);
2445	SSMR3PutU8(pSSM, pThis->timer1);
2446	SSMR3PutU8(pSSM, pThis->precomp_trk);
2447	SSMR3PutU8(pSSM, pThis->config);
2448	SSMR3PutU8(pSSM, pThis->lock);
2449	SSMR3PutU8(pSSM, pThis->pwrd);
2450	SSMR3PutU8(pSSM, pThis->version);
2451
2452	/* Save the number of drives and per-drive state. Note that the media
2453	* states will be updated in fd_revalidate() and need not be saved.
2454	*/
2455	SSMR3PutU8(pSSM, pThis->num_floppies);
2456	Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2457	for (i = 0; i < pThis->num_floppies; ++i)
2458	{
2459	fdrive_t *d = &pThis->drives[i];
2460
2461	SSMR3PutMem(pSSM, &d->Led, sizeof(d->Led));
2462	SSMR3PutU32(pSSM, d->drive);
2463	SSMR3PutU8(pSSM, d->dsk_chg);
2464	SSMR3PutU8(pSSM, d->perpendicular);
2465	SSMR3PutU8(pSSM, d->head);
2466	SSMR3PutU8(pSSM, d->track);
2467	SSMR3PutU8(pSSM, d->sect);
2468	}
2469	return TMR3TimerSave (pThis->result_timer, pSSM);
2470	}
2471
2472
2473	/**
2474	* @callback_method_impl{FNSSMDEVLOADEXEC}
2475	*/
2476	static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2477	{
2478	fdctrl_t pThis = PDMINS_2_DATA(pDevIns, fdctrl_t );
2479	unsigned int i;
2480	uint32_t val32;
2481	uint8_t val8;
2482
2483	if (uVersion > FDC_SAVESTATE_CURRENT)
2484	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2485	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2486
2487	/* The old saved state was significantly different. However, we can get
2488	* back most of the controller state and fix the rest by pretending the
2489	* disk in the drive (if any) has been replaced. At any rate there should
2490	* be no difficulty unless the state was saved during a floppy operation.
2491	*/
2492	if (uVersion == FDC_SAVESTATE_OLD)
2493	{
2494	/* First verify a few assumptions. */
2495	AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2496	("The size of FIFO in saved state doesn't match!\n"),
2497	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2498	AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2499	("The number of drives in old saved state doesn't match!\n"),
2500	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2501	/* Now load the old state. */
2502	SSMR3GetU8(pSSM, &pThis->version);
2503	/* Toss IRQ level, DMA channel, I/O base, and state. */
2504	SSMR3GetU8(pSSM, &val8);
2505	SSMR3GetU8(pSSM, &val8);
2506	SSMR3GetU32(pSSM, &val32);
2507	SSMR3GetU8(pSSM, &val8);
2508	/* Translate dma_en. */
2509	SSMR3GetU8(pSSM, &val8);
2510	if (val8)
2511	pThis->dor \|= FD_DOR_DMAEN;
2512	SSMR3GetU8(pSSM, &pThis->cur_drv);
2513	/* Translate bootsel. */
2514	SSMR3GetU8(pSSM, &val8);
2515	pThis->tdr \|= val8 << 2;
2516	SSMR3GetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2517	SSMR3GetU32(pSSM, &pThis->data_pos);
2518	SSMR3GetU32(pSSM, &pThis->data_len);
2519	SSMR3GetU8(pSSM, &pThis->data_state);
2520	SSMR3GetU8(pSSM, &pThis->data_dir);
2521	SSMR3GetU8(pSSM, &pThis->status0);
2522	SSMR3GetU8(pSSM, &pThis->eot);
2523	SSMR3GetU8(pSSM, &pThis->timer0);
2524	SSMR3GetU8(pSSM, &pThis->timer1);
2525	SSMR3GetU8(pSSM, &pThis->precomp_trk);
2526	SSMR3GetU8(pSSM, &pThis->config);
2527	SSMR3GetU8(pSSM, &pThis->lock);
2528	SSMR3GetU8(pSSM, &pThis->pwrd);
2529
2530	for (i = 0; i < 2; ++i)
2531	{
2532	fdrive_t *d = &pThis->drives[i];
2533
2534	SSMR3GetMem (pSSM, &d->Led, sizeof (d->Led));
2535	SSMR3GetU32(pSSM, &val32);
2536	d->drive = (fdrive_type_t)val32;
2537	SSMR3GetU32(pSSM, &val32); /* Toss drflags */
2538	SSMR3GetU8(pSSM, &d->perpendicular);
2539	SSMR3GetU8(pSSM, &d->head);
2540	SSMR3GetU8(pSSM, &d->track);
2541	SSMR3GetU8(pSSM, &d->sect);
2542	SSMR3GetU8(pSSM, &val8); /* Toss dir, rw */
2543	SSMR3GetU8(pSSM, &val8);
2544	SSMR3GetU32(pSSM, &val32);
2545	d->flags = (fdrive_flags_t)val32;
2546	SSMR3GetU8(pSSM, &d->last_sect);
2547	SSMR3GetU8(pSSM, &d->max_track);
2548	SSMR3GetU16(pSSM, &d->bps);
2549	SSMR3GetU8(pSSM, &d->ro);
2550	}
2551	}
2552	else /* New state - straightforward. */
2553	{
2554	Assert(uVersion == FDC_SAVESTATE_CURRENT);
2555	/* Load the FDC I/O registers... */
2556	SSMR3GetU8(pSSM, &pThis->sra);
2557	SSMR3GetU8(pSSM, &pThis->srb);
2558	SSMR3GetU8(pSSM, &pThis->dor);
2559	SSMR3GetU8(pSSM, &pThis->tdr);
2560	SSMR3GetU8(pSSM, &pThis->dsr);
2561	SSMR3GetU8(pSSM, &pThis->msr);
2562	/* ...the status registers... */
2563	SSMR3GetU8(pSSM, &pThis->status0);
2564	SSMR3GetU8(pSSM, &pThis->status1);
2565	SSMR3GetU8(pSSM, &pThis->status2);
2566	/* ...the command FIFO, if the size matches... */
2567	SSMR3GetU32(pSSM, &val32);
2568	AssertMsgReturn(sizeof(pThis->fifo) == val32,
2569	("The size of FIFO in saved state doesn't match!\n"),
2570	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2571	SSMR3GetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2572	SSMR3GetU32(pSSM, &pThis->data_pos);
2573	SSMR3GetU32(pSSM, &pThis->data_len);
2574	SSMR3GetU8(pSSM, &pThis->data_state);
2575	SSMR3GetU8(pSSM, &pThis->data_dir);
2576	/* ...and miscellaneous internal FDC state. */
2577	SSMR3GetU8(pSSM, &pThis->reset_sensei);
2578	SSMR3GetU8(pSSM, &pThis->eot);
2579	SSMR3GetU8(pSSM, &pThis->timer0);
2580	SSMR3GetU8(pSSM, &pThis->timer1);
2581	SSMR3GetU8(pSSM, &pThis->precomp_trk);
2582	SSMR3GetU8(pSSM, &pThis->config);
2583	SSMR3GetU8(pSSM, &pThis->lock);
2584	SSMR3GetU8(pSSM, &pThis->pwrd);
2585	SSMR3GetU8(pSSM, &pThis->version);
2586
2587	/* Validate the number of drives. */
2588	SSMR3GetU8(pSSM, &pThis->num_floppies);
2589	AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2590	("The number of drives in saved state doesn't match!\n"),
2591	VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2592
2593	/* Load the per-drive state. */
2594	for (i = 0; i < pThis->num_floppies; ++i)
2595	{
2596	fdrive_t *d = &pThis->drives[i];
2597
2598	SSMR3GetMem(pSSM, &d->Led, sizeof(d->Led));
2599	SSMR3GetU32(pSSM, &val32);
2600	d->drive = (fdrive_type_t)val32;
2601	SSMR3GetU8(pSSM, &d->dsk_chg);
2602	SSMR3GetU8(pSSM, &d->perpendicular);
2603	SSMR3GetU8(pSSM, &d->head);
2604	SSMR3GetU8(pSSM, &d->track);
2605	SSMR3GetU8(pSSM, &d->sect);
2606	}
2607	}
2608	return TMR3TimerLoad (pThis->result_timer, pSSM);
2609	}
2610
2611
2612	/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2613
2614	/**
2615	* @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2616	*/
2617	static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2618	{
2619	fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2620	LogFlow(("fdMountNotify:\n"));
2621	fd_revalidate(pDrv);
2622	}
2623
2624
2625	/**
2626	* @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2627	*/
2628	static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2629	{
2630	fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2631	LogFlow(("fdUnmountNotify:\n"));
2632	fd_revalidate(pDrv);
2633	}
2634
2635
2636	/**
2637	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2638	*/
2639	static DECLCALLBACK(void ) fdQueryInterface (PPDMIBASE pInterface, const char pszIID)
2640	{
2641	fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2642
2643	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2644	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pDrv->IPort);
2645	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2646	return NULL;
2647	}
2648
2649
2650	/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2651
2652	/**
2653	* @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2654	*/
2655	static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2656	{
2657	fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2658	if (iLUN < RT_ELEMENTS(pThis->drives)) {
2659	*ppLed = &pThis->drives[iLUN].Led;
2660	Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2661	return VINF_SUCCESS;
2662	}
2663	return VERR_PDM_LUN_NOT_FOUND;
2664	}
2665
2666
2667	/**
2668	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2669	*/
2670	static DECLCALLBACK(void ) fdcStatusQueryInterface(PPDMIBASE pInterface, const char pszIID)
2671	{
2672	fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2673
2674	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2675	PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2676	return NULL;
2677	}
2678
2679
2680	/**
2681	* Configure a drive.
2682	*
2683	* @returns VBox status code.
2684	* @param drv The drive in question.
2685	* @param pDevIns The driver instance.
2686	* @param fInit Set if we're at init time and can change the drive type.
2687	*/
2688	static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2689	{
2690	static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2691	int rc;
2692
2693	/*
2694	* Reset the LED just to be on the safe side.
2695	*/
2696	Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2697	Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2698	drv->Led.Actual.u32 = 0;
2699	drv->Led.Asserted.u32 = 0;
2700
2701	/*
2702	* Try attach the block device and get the interfaces.
2703	*/
2704	rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2705	if (RT_SUCCESS (rc)) {
2706	drv->pDrvMedia = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMEDIA);
2707	if (drv->pDrvMedia) {
2708	drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2709	if (drv->pDrvMount) {
2710	fd_init(drv, fInit);
2711	} else {
2712	AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2713	rc = VERR_PDM_MISSING_INTERFACE;
2714	}
2715
2716	} else {
2717	AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2718	rc = VERR_PDM_MISSING_INTERFACE;
2719	}
2720	} else {
2721	AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2722	("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2723	switch (rc) {
2724	case VERR_ACCESS_DENIED:
2725	/* Error already cached by DrvHostBase */
2726	break;
2727	case VERR_PDM_NO_ATTACHED_DRIVER:
2728	/* Legal on architectures without a floppy controller */
2729	break;
2730	default:
2731	rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2732	N_ ("The floppy controller cannot attach to the floppy drive"));
2733	break;
2734	}
2735	}
2736
2737	if (RT_FAILURE (rc)) {
2738	drv->pDrvBase = NULL;
2739	drv->pDrvMedia = NULL;
2740	drv->pDrvMount = NULL;
2741	}
2742	LogFlow (("fdConfig: returns %Rrc\n", rc));
2743	return rc;
2744	}
2745
2746
2747	/**
2748	* @interface_method_impl{PDMDEVREG,pfnAttach}
2749	*
2750	* This is called when we change block driver for a floppy drive.
2751	*/
2752	static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2753	{
2754	fdctrl_t fdctrl = PDMINS_2_DATA(pDevIns, fdctrl_t );
2755	fdrive_t *drv;
2756	int rc;
2757	LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2758
2759	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2760	("The FDC device does not support hotplugging\n"),
2761	VERR_INVALID_PARAMETER);
2762
2763	/*
2764	* Validate.
2765	*/
2766	if (iLUN >= 2) {
2767	AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2768	iLUN));
2769	return VERR_PDM_DEVINS_NO_ATTACH;
2770	}
2771
2772	/*
2773	* Locate the drive and stuff.
2774	*/
2775	drv = &fdctrl->drives[iLUN];
2776
2777	/* the usual paranoia */
2778	AssertRelease (!drv->pDrvBase);
2779	AssertRelease (!drv->pDrvMedia);
2780	AssertRelease (!drv->pDrvMount);
2781
2782	rc = fdConfig (drv, pDevIns, false /fInit/);
2783	AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2784	("Configuration error: failed to configure drive %d, rc=%Rrc\n", iLUN, rc));
2785	if (RT_SUCCESS(rc)) {
2786	fd_revalidate (drv);
2787	}
2788
2789	LogFlow (("floppyAttach: returns %Rrc\n", rc));
2790	return rc;
2791	}
2792
2793
2794	/**
2795	* @interface_method_impl{PDMDEVREG,pfnDetach}
2796	*
2797	* The floppy drive has been temporarily 'unplugged'.
2798	*/
2799	static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2800	{
2801	fdctrl_t pThis = PDMINS_2_DATA(pDevIns, fdctrl_t );
2802	LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2803
2804	switch (iLUN)
2805	{
2806	case 0:
2807	case 1:
2808	{
2809	fdrive_t *drv = &pThis->drives[iLUN];
2810	drv->pDrvBase = NULL;
2811	drv->pDrvMedia = NULL;
2812	drv->pDrvMount = NULL;
2813	break;
2814	}
2815
2816	default:
2817	AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2818	break;
2819	}
2820	}
2821
2822
2823	/**
2824	* @interface_method_impl{PDMDEVREG,pfnReset}
2825	*
2826	* I haven't check the specs on what's supposed to happen on reset, but we
2827	* should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2828	* at wrong time like we do if this was all void.
2829	*/
2830	static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2831	{
2832	fdctrl_t pThis = PDMINS_2_DATA (pDevIns, fdctrl_t );
2833	unsigned i;
2834	LogFlow (("fdcReset:\n"));
2835
2836	fdctrl_reset(pThis, 0);
2837
2838	for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2839	fd_revalidate(&pThis->drives[i]);
2840	}
2841
2842
2843	/**
2844	* @interface_method_impl{PDMDEVREG,pfnConstruct}
2845	*/
2846	static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2847	{
2848	fdctrl_t pThis = PDMINS_2_DATA(pDevIns, fdctrl_t );
2849	int rc;
2850	unsigned i, j;
2851	int ii;
2852	bool mem_mapped;
2853	uint16_t io_base;
2854	uint8_t irq_lvl, dma_chann;
2855	PPDMIBASE pBase;
2856
2857	Assert(iInstance == 0);
2858	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2859
2860	/*
2861	* Validate configuration.
2862	*/
2863	if (!CFGMR3AreValuesValid(pCfg, "IRQ\0DMA\0MemMapped\0IOBase\0"))
2864	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2865
2866	/*
2867	* Read the configuration.
2868	*/
2869	rc = CFGMR3QueryU8Def(pCfg, "IRQ", &irq_lvl, 6);
2870	AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2871
2872	rc = CFGMR3QueryU8Def(pCfg, "DMA", &dma_chann, 2);
2873	AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2874
2875	rc = CFGMR3QueryU16Def(pCfg, "IOBase", &io_base, 0x3f0);
2876	AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2877
2878	rc = CFGMR3QueryBoolDef(pCfg, "MemMapped", &mem_mapped, false);
2879	AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2880
2881	/*
2882	* Initialize data.
2883	*/
2884	LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", irq_lvl, dma_chann, io_base));
2885	pThis->pDevIns = pDevIns;
2886	pThis->version = 0x90; /* Intel 82078 controller */
2887	pThis->irq_lvl = irq_lvl;
2888	pThis->dma_chann = dma_chann;
2889	pThis->io_base = io_base;
2890	pThis->config = FD_CONFIG_EIS \| FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2891	pThis->num_floppies = MAX_FD;
2892
2893	/* Fill 'command_to_handler' lookup table */
2894	for (ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2895	for (j = 0; j < sizeof(command_to_handler); j++)
2896	if ((j & handlers[ii].mask) == handlers[ii].value)
2897	command_to_handler[j] = ii;
2898
2899	pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2900	pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2901
2902	for (i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2903	{
2904	fdrive_t *pDrv = &pThis->drives[i];
2905
2906	pDrv->drive = FDRIVE_DRV_NONE;
2907	pDrv->iLUN = i;
2908
2909	pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2910	pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2911	pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2912	pDrv->Led.u32Magic = PDMLED_MAGIC;
2913	}
2914
2915	/*
2916	* Create the FDC timer.
2917	*/
2918	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2919	TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->result_timer);
2920	if (RT_FAILURE(rc))
2921	return rc;
2922
2923	/*
2924	* Register DMA channel.
2925	*/
2926	if (pThis->dma_chann != 0xff)
2927	{
2928	rc = PDMDevHlpDMARegister(pDevIns, dma_chann, &fdctrl_transfer_handler, pThis);
2929	if (RT_FAILURE(rc))
2930	return rc;
2931	}
2932
2933	/*
2934	* IO / MMIO.
2935	*/
2936	if (mem_mapped)
2937	{
2938	AssertMsgFailed(("Memory mapped floppy not support by now\n"));
2939	return VERR_NOT_SUPPORTED;
2940	#if 0
2941	FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
2942	io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
2943	cpu_register_physical_memory(base, 0x08, io_mem);
2944	#endif
2945	}
2946	else
2947	{
2948	rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x1, 5, pThis,
2949	fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#1");
2950	if (RT_FAILURE(rc))
2951	return rc;
2952
2953	rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x7, 1, pThis,
2954	fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#2");
2955	if (RT_FAILURE(rc))
2956	return rc;
2957	}
2958
2959	/*
2960	* Register the saved state data unit.
2961	*/
2962	rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
2963	if (RT_FAILURE(rc))
2964	return rc;
2965
2966	/*
2967	* Attach the status port (optional).
2968	*/
2969	rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
2970	if (RT_SUCCESS (rc))
2971	pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
2972	else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
2973	{
2974	AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
2975	return rc;
2976	}
2977
2978	/*
2979	* Initialize drives.
2980	*/
2981	for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2982	{
2983	fdrive_t *pDrv = &pThis->drives[i];
2984	rc = fdConfig(pDrv, pDevIns, true /fInit/);
2985	if ( RT_FAILURE(rc)
2986	&& rc != VERR_PDM_NO_ATTACHED_DRIVER)
2987	{
2988	AssertMsgFailed(("Configuration error: failed to configure drive %d, rc=%Rrc\n", i, rc));
2989	return rc;
2990	}
2991	}
2992
2993	fdctrl_reset(pThis, 0);
2994
2995	for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2996	fd_revalidate(&pThis->drives[i]);
2997
2998	return VINF_SUCCESS;
2999	}
3000
3001
3002	/**
3003	* The device registration structure.
3004	*/
3005	const PDMDEVREG g_DeviceFloppyController =
3006	{
3007	/* u32Version */
3008	PDM_DEVREG_VERSION,
3009	/* szName */
3010	"i82078",
3011	/* szRCMod */
3012	"",
3013	/* szR0Mod */
3014	"",
3015	/* pszDescription */
3016	"Floppy drive controller (Intel 82078)",
3017	/* fFlags */
3018	PDM_DEVREG_FLAGS_DEFAULT_BITS,
3019	/* fClass */
3020	PDM_DEVREG_CLASS_STORAGE,
3021	/* cMaxInstances */
3022	1,
3023	/* cbInstance */
3024	sizeof(fdctrl_t),
3025	/* pfnConstruct */
3026	fdcConstruct,
3027	/* pfnDestruct */
3028	NULL,
3029	/* pfnRelocate */
3030	NULL,
3031	/* pfnMemSetup */
3032	NULL,
3033	/* pfnPowerOn */
3034	NULL,
3035	/* pfnReset */
3036	fdcReset,
3037	/* pfnSuspend */
3038	NULL,
3039	/* pfnResume */
3040	NULL,
3041	/* pfnAttach */
3042	fdcAttach,
3043	/* pfnDetach */
3044	fdcDetach,
3045	/* pfnQueryInterface. */
3046	NULL,
3047	/* pfnInitComplete */
3048	NULL,
3049	/* pfnPowerOff */
3050	NULL,
3051	/* pfnSoftReset */
3052	NULL,
3053	/* u32VersionEnd */
3054	PDM_DEVREG_VERSION
3055	};
3056
3057	#endif /* VBOX */
3058
3059	/*
3060	* Local Variables:
3061	* mode: c
3062	* c-file-style: "k&r"
3063	* indent-tabs-mode: nil
3064	* End:
3065	*/
3066

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source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 59248

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