VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 77756

Last change on this file since 77756 was 77043, checked in by vboxsync, 6 years ago

FDC: Double density 720K floppies need 300 kbps data rate in a 5.25 drive, just like other DD media.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 101.6 KB
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1/* $Id: DevFdc.cpp 77043 2019-01-30 13:05:21Z vboxsync $ */
2/** @file
3 * VBox storage devices - Floppy disk controller
4 */
5
6/*
7 * Copyright (C) 2006-2019 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 <VBox/vmm/pdmstorageifs.h>
51#include <iprt/assert.h>
52#include <iprt/string.h>
53#include <iprt/uuid.h>
54
55#include "VBoxDD.h"
56
57#define FDC_SAVESTATE_CURRENT 2 /* The new and improved saved state. */
58#define FDC_SAVESTATE_OLD 1 /* The original saved state. */
59
60#define MAX_FD 2
61
62
63/********************************************************/
64/* debug Floppy devices */
65/* #define DEBUG_FLOPPY */
66
67#ifndef VBOX
68 #ifdef DEBUG_FLOPPY
69 #define FLOPPY_DPRINTF(fmt, args...) \
70 do { printf("FLOPPY: " fmt , ##args); } while (0)
71 #endif
72#else /* !VBOX */
73# ifdef LOG_ENABLED
74# define FLOPPY_DPRINTF(...) Log(("floppy: " __VA_ARGS__))
75# else
76# define FLOPPY_DPRINTF(...) do { } while (0)
77# endif
78#endif /* !VBOX */
79
80#ifndef VBOX
81#define FLOPPY_ERROR(fmt, args...) \
82 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
83#else /* VBOX */
84# define FLOPPY_ERROR RTLogPrintf
85#endif /* VBOX */
86
87#ifdef VBOX
88typedef struct fdctrl_t fdctrl_t;
89#endif /* VBOX */
90
91/********************************************************/
92/* Floppy drive emulation */
93
94#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
95#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
96
97/* Will always be a fixed parameter for us */
98#define FD_SECTOR_LEN 512
99#define FD_SECTOR_SC 2 /* Sector size code */
100#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
101
102/* Floppy disk drive emulation */
103typedef enum fdrive_type_t {
104 FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
105 FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
106 FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
107 FDRIVE_DRV_NONE = 0x03 /* No drive connected */
108#ifdef VBOX
109 , FDRIVE_DRV_FAKE_15_6 = 0x0e /* Fake 15.6 MB drive. */
110 , FDRIVE_DRV_FAKE_63_5 = 0x0f /* Fake 63.5 MB drive. */
111#endif
112} fdrive_type_t;
113
114typedef uint8_t fdrive_flags_t;
115#define FDISK_DBL_SIDES UINT8_C(0x01)
116
117typedef enum fdrive_rate_t {
118 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
119 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
120 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
121 FDRIVE_RATE_1M = 0x03 /* 1 Mbps */
122} fdrive_rate_t;
123
124/**
125 * The status for one drive.
126 *
127 * @implements PDMIBASE
128 * @implements PDMIMEDIAPORT
129 * @implements PDMIMOUNTNOTIFY
130 */
131typedef struct fdrive_t {
132#ifndef VBOX
133 BlockDriverState *bs;
134#else /* VBOX */
135 /** Pointer to the owning device instance. */
136 R3PTRTYPE(PPDMDEVINS) pDevIns;
137 /** Pointer to the attached driver's base interface. */
138 R3PTRTYPE(PPDMIBASE) pDrvBase;
139 /** Pointer to the attached driver's block interface. */
140 R3PTRTYPE(PPDMIMEDIA) pDrvMedia;
141 /** Pointer to the attached driver's mount interface.
142 * This is NULL if the driver isn't a removable unit. */
143 R3PTRTYPE(PPDMIMOUNT) pDrvMount;
144 /** The base interface. */
145 PDMIBASE IBase;
146 /** The block port interface. */
147 PDMIMEDIAPORT IPort;
148 /** The mount notify interface. */
149 PDMIMOUNTNOTIFY IMountNotify;
150 /** The LUN #. */
151 RTUINT iLUN;
152 /** The LED for this LUN. */
153 PDMLED Led;
154#endif
155 /* Drive status */
156 fdrive_type_t drive;
157 uint8_t perpendicular; /* 2.88 MB access mode */
158 uint8_t dsk_chg; /* Disk change line */
159 /* Position */
160 uint8_t head;
161 uint8_t track;
162 uint8_t sect;
163 uint8_t ltrk; /* Logical track */
164 /* Media */
165 fdrive_flags_t flags;
166 uint8_t last_sect; /* Nb sector per track */
167 uint8_t max_track; /* Nb of tracks */
168 uint16_t bps; /* Bytes per sector */
169 uint8_t ro; /* Is read-only */
170 uint8_t media_rate; /* Data rate of medium */
171} fdrive_t;
172
173#define NUM_SIDES(drv) (drv->flags & FDISK_DBL_SIDES ? 2 : 1)
174
175static void fd_init(fdrive_t *drv, bool fInit)
176{
177 /* Drive */
178#ifndef VBOX
179 drv->drive = FDRIVE_DRV_NONE;
180#else /* VBOX */
181 if (fInit) {
182 /* Fixate the drive type at init time if possible. */
183 if (drv->pDrvMedia) {
184 PDMMEDIATYPE enmType = drv->pDrvMedia->pfnGetType(drv->pDrvMedia);
185 switch (enmType) {
186 case PDMMEDIATYPE_FLOPPY_360:
187 case PDMMEDIATYPE_FLOPPY_1_20:
188 drv->drive = FDRIVE_DRV_120;
189 break;
190 case PDMMEDIATYPE_FLOPPY_720:
191 case PDMMEDIATYPE_FLOPPY_1_44:
192 drv->drive = FDRIVE_DRV_144;
193 break;
194 default:
195 AssertFailed();
196 RT_FALL_THRU();
197 case PDMMEDIATYPE_FLOPPY_2_88:
198 drv->drive = FDRIVE_DRV_288;
199 break;
200 case PDMMEDIATYPE_FLOPPY_FAKE_15_6:
201 drv->drive = FDRIVE_DRV_FAKE_15_6;
202 break;
203 case PDMMEDIATYPE_FLOPPY_FAKE_63_5:
204 drv->drive = FDRIVE_DRV_FAKE_63_5;
205 break;
206 }
207 } else {
208 drv->drive = FDRIVE_DRV_NONE;
209 }
210 } /* else: The BIOS (and others) get the drive type via the CMOS, so
211 don't change it after the VM has been constructed. */
212#endif /* VBOX */
213 drv->perpendicular = 0;
214 /* Disk */
215 drv->last_sect = 0;
216 drv->max_track = 0;
217}
218
219static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
220 uint8_t last_sect, uint8_t num_sides)
221{
222 return (((track * num_sides) + head) * last_sect) + sect - 1; /* sect >= 1 */
223}
224
225/* Returns current position, in sectors, for given drive */
226static int fd_sector(fdrive_t *drv)
227{
228 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, NUM_SIDES(drv));
229}
230
231/* Seek to a new position:
232 * returns 0 if already on right track
233 * returns 1 if track changed
234 * returns 2 if track is invalid
235 * returns 3 if sector is invalid
236 * returns 4 if seek is disabled
237 * returns 5 if no media in drive
238 */
239static int fd_seek(fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
240 int enable_seek)
241{
242 int sector;
243 int ret;
244
245 if (!drv->last_sect) {
246 FLOPPY_DPRINTF("no disk in drive (max=%d %d %02x %02x)\n",
247 1, (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
248 drv->max_track, drv->last_sect);
249 return 5;
250 }
251 if (track > drv->max_track ||
252 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
253 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
254 head, track, sect, 1,
255 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
256 drv->max_track, drv->last_sect);
257 return 2;
258 }
259 if (sect > drv->last_sect || sect < 1) {
260 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
261 head, track, sect, 1,
262 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
263 drv->max_track, drv->last_sect);
264 return 3;
265 }
266 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
267 ret = 0;
268 if (sector != fd_sector(drv)) {
269#if 0
270 if (!enable_seek) {
271 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
272 head, track, sect, 1, drv->max_track, drv->last_sect);
273 return 4;
274 }
275#else
276 RT_NOREF(enable_seek);
277#endif
278 drv->head = head;
279 if (drv->track != track)
280 ret = 1;
281 drv->track = track;
282 drv->sect = sect;
283 }
284 drv->ltrk = drv->track;
285
286 return ret;
287}
288
289/* Set drive back to track 0 */
290static void fd_recalibrate(fdrive_t *drv)
291{
292 FLOPPY_DPRINTF("recalibrate\n");
293 drv->head = 0;
294 drv->track = 0;
295 drv->ltrk = 0;
296 drv->sect = 1;
297}
298
299/* Recognize floppy formats */
300typedef struct fd_format_t {
301 fdrive_type_t drive;
302 uint8_t last_sect; /**< Number of sectors. */
303 uint8_t max_track; /**< Number of tracks. */
304 uint8_t max_head; /**< Max head number. */
305 fdrive_rate_t rate;
306 const char *str;
307} fd_format_t;
308
309/* Note: Low-density disks (160K/180K/320K/360K) use 250 Kbps data rate
310 * in 40-track drives, but 300 Kbps in high-capacity 80-track drives.
311 */
312static fd_format_t fd_formats[] = {
313 /* First entry is default format */
314 /* 1.44 MB 3"1/2 floppy disks */
315 { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
316 { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
317 { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
318 { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
319 { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
320 { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
321 { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
322 { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
323 /* 2.88 MB 3"1/2 floppy disks */
324 { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
325 { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
326 { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
327 { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
328 { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
329 /* 720 kB 3"1/2 floppy disks */
330 { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
331 { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
332 { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
333 { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
334 { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
335 { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
336 /* 1.2 MB 5"1/4 floppy disks */
337 { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 5\"1/4", },
338 { FDRIVE_DRV_120, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 5\"1/4", }, /* CP Backup 5.25" HD */
339 { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 5\"1/4", },
340 { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, "1.48 MB 5\"1/4", },
341 { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, "1.49 MB 5\"1/4", },
342 { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 5\"1/4", },
343 /* 720 kB 5"1/4 floppy disks */
344 { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_300K, "720 kB 5\"1/4", },
345 { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_300K, "880 kB 5\"1/4", },
346 /* 360 kB 5"1/4 floppy disks (newer 9-sector formats) */
347 { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 5\"1/4", },
348 { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 5\"1/4", },
349 { FDRIVE_DRV_120, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 5\"1/4", }, /* CP Backup 5.25" DD */
350 { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, "410 kB 5\"1/4", },
351 { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, "420 kB 5\"1/4", },
352 /* 320 kB 5"1/4 floppy disks (old 8-sector formats) */
353 { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 5\"1/4", },
354 { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 5\"1/4", },
355 /* 1.2 MB and low density 3"1/2 floppy 'aliases' */
356 { FDRIVE_DRV_144, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 3\"1/2", },
357 { FDRIVE_DRV_144, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 3\"1/2", },
358 { FDRIVE_DRV_144, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 3\"1/2", }, /* CP Backup 5.25" DD */
359 { FDRIVE_DRV_144, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 3\"1/2", },
360 { FDRIVE_DRV_144, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 3\"1/2", },
361 { FDRIVE_DRV_144, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 3\"1/2", },
362 { FDRIVE_DRV_144, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 3\"1/2", },
363#ifdef VBOX /* For larger than real life floppy images (see DrvBlock.cpp). */
364 /* 15.6 MB fake floppy disk (just need something big). */
365 { FDRIVE_DRV_FAKE_15_6, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 15.6", },
366 { FDRIVE_DRV_FAKE_15_6, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 15.6", },
367 { FDRIVE_DRV_FAKE_15_6, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 15.6", },
368 { FDRIVE_DRV_FAKE_15_6, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 15.6", },
369 { FDRIVE_DRV_FAKE_15_6, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 15.6", },
370 { FDRIVE_DRV_FAKE_15_6, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 15.6", },
371 { FDRIVE_DRV_FAKE_15_6, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 15.6", },
372 { FDRIVE_DRV_FAKE_15_6, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 15.6", },
373 { FDRIVE_DRV_FAKE_15_6, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 15.6", },
374 { FDRIVE_DRV_FAKE_15_6, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 15.6", },
375 { FDRIVE_DRV_FAKE_15_6, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 15.6", },
376 { FDRIVE_DRV_FAKE_15_6, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 15.6", },
377 { FDRIVE_DRV_FAKE_15_6, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 15.6", },
378 { FDRIVE_DRV_FAKE_15_6, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 15.6", },
379 { FDRIVE_DRV_FAKE_15_6, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 15.6", },
380 { FDRIVE_DRV_FAKE_15_6, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 15.6", },
381 { FDRIVE_DRV_FAKE_15_6, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 15.6", },
382 { FDRIVE_DRV_FAKE_15_6, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 15.6", },
383 { FDRIVE_DRV_FAKE_15_6, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 15.6", },
384 { FDRIVE_DRV_FAKE_15_6, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 15.6", },
385 { FDRIVE_DRV_FAKE_15_6, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 15.6", },
386 /* 63.5 MB fake floppy disk (just need something big). */
387 { FDRIVE_DRV_FAKE_63_5, 255, 255, 1, FDRIVE_RATE_1M, "63.5 MB fake 63.5", },
388 { FDRIVE_DRV_FAKE_63_5, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 63.5", },
389 { FDRIVE_DRV_FAKE_63_5, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 63.5", },
390 { FDRIVE_DRV_FAKE_63_5, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 63.5", },
391 { FDRIVE_DRV_FAKE_63_5, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 63.5", },
392 { FDRIVE_DRV_FAKE_63_5, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 63.5", },
393 { FDRIVE_DRV_FAKE_63_5, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 63.5", },
394 { FDRIVE_DRV_FAKE_63_5, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 63.5", },
395 { FDRIVE_DRV_FAKE_63_5, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 63.5", },
396 { FDRIVE_DRV_FAKE_63_5, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 63.5", },
397 { FDRIVE_DRV_FAKE_63_5, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 63.5", },
398 { FDRIVE_DRV_FAKE_63_5, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 63.5", },
399 { FDRIVE_DRV_FAKE_63_5, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 63.5", },
400 { FDRIVE_DRV_FAKE_63_5, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 63.5", },
401 { FDRIVE_DRV_FAKE_63_5, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 63.5", },
402 { FDRIVE_DRV_FAKE_63_5, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 63.5", },
403 { FDRIVE_DRV_FAKE_63_5, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 63.5", },
404 { FDRIVE_DRV_FAKE_63_5, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 63.5", },
405 { FDRIVE_DRV_FAKE_63_5, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 63.5", },
406 { FDRIVE_DRV_FAKE_63_5, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 63.5", },
407 { FDRIVE_DRV_FAKE_63_5, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 63.5", },
408 { FDRIVE_DRV_FAKE_63_5, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 63.5", },
409#endif
410 /* end */
411 { FDRIVE_DRV_NONE, (uint8_t)-1, (uint8_t)-1, 0, (fdrive_rate_t)0, NULL, },
412};
413
414/* Revalidate a disk drive after a disk change */
415static void fd_revalidate(fdrive_t *drv)
416{
417 const fd_format_t *parse;
418 uint64_t nb_sectors, size;
419 int i, first_match, match;
420 int nb_heads, max_track, last_sect, ro;
421
422 FLOPPY_DPRINTF("revalidate\n");
423#ifndef VBOX
424 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
425 ro = bdrv_is_read_only(drv->bs);
426 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
427#else /* VBOX */
428 if ( drv->pDrvMedia
429 && drv->pDrvMount
430 && drv->pDrvMount->pfnIsMounted (drv->pDrvMount)) {
431 ro = drv->pDrvMedia->pfnIsReadOnly (drv->pDrvMedia);
432 nb_heads = max_track = last_sect = 0;
433#endif /* VBOX */
434 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
435 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
436 nb_heads - 1, max_track, last_sect);
437 } else {
438#ifndef VBOX
439 bdrv_get_geometry(drv->bs, &nb_sectors);
440#else /* VBOX */
441 {
442 uint64_t size2 = drv->pDrvMedia->pfnGetSize (drv->pDrvMedia);
443 nb_sectors = size2 / FD_SECTOR_LEN;
444 }
445#endif /* VBOX */
446 match = -1;
447 first_match = -1;
448 for (i = 0;; i++) {
449 parse = &fd_formats[i];
450 if (parse->drive == FDRIVE_DRV_NONE)
451 break;
452 if (drv->drive == parse->drive ||
453 drv->drive == FDRIVE_DRV_NONE) {
454 size = (parse->max_head + 1) * parse->max_track *
455 parse->last_sect;
456 if (nb_sectors == size) {
457 match = i;
458 break;
459 }
460 if (first_match == -1)
461 first_match = i;
462 }
463 }
464 if (match == -1) {
465 if (first_match == -1)
466 match = 1;
467 else
468 match = first_match;
469 parse = &fd_formats[match];
470 }
471 nb_heads = parse->max_head + 1;
472 max_track = parse->max_track;
473 last_sect = parse->last_sect;
474 drv->drive = parse->drive;
475#ifdef VBOX
476 drv->media_rate = parse->rate;
477#endif
478 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
479 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
480 LogRel(("FDC: %s floppy disk (%d h %d t %d s) %s\n", parse->str,
481 nb_heads, max_track, last_sect, ro ? "ro" : "rw"));
482 }
483 if (nb_heads == 1) {
484 drv->flags &= ~FDISK_DBL_SIDES;
485 } else {
486 drv->flags |= FDISK_DBL_SIDES;
487 }
488 drv->max_track = max_track;
489 drv->last_sect = last_sect;
490 drv->ro = ro;
491 } else {
492 FLOPPY_DPRINTF("No disk in drive\n");
493 drv->last_sect = 0;
494 drv->max_track = 0;
495 drv->flags &= ~FDISK_DBL_SIDES;
496 drv->dsk_chg = true; /* Disk change line active. */
497 }
498}
499
500/********************************************************/
501/* Intel 82078 floppy disk controller emulation */
502
503static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq);
504static void fdctrl_reset_fifo(fdctrl_t *fdctrl);
505#ifndef VBOX
506static int fdctrl_transfer_handler (void *opaque, int nchan,
507 int dma_pos, int dma_len);
508#else /* VBOX: */
509static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
510 void *opaque,
511 unsigned nchan,
512 uint32_t dma_pos,
513 uint32_t dma_len);
514#endif /* VBOX */
515static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0);
516static fdrive_t *get_cur_drv(fdctrl_t *fdctrl);
517
518static void fdctrl_result_timer(void *opaque);
519static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl);
520static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl);
521static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl);
522static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value);
523static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl);
524static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value);
525static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl);
526static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value);
527static uint32_t fdctrl_read_data(fdctrl_t *fdctrl);
528static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value);
529static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl);
530static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value);
531
532enum {
533 FD_DIR_WRITE = 0,
534 FD_DIR_READ = 1,
535 FD_DIR_SCANE = 2,
536 FD_DIR_SCANL = 3,
537 FD_DIR_SCANH = 4,
538 FD_DIR_FORMAT = 5
539};
540
541enum {
542 FD_STATE_MULTI = 0x01, /* multi track flag */
543 FD_STATE_FORMAT = 0x02, /* format flag */
544 FD_STATE_SEEK = 0x04 /* seek flag */
545};
546
547enum {
548 FD_REG_SRA = 0x00,
549 FD_REG_SRB = 0x01,
550 FD_REG_DOR = 0x02,
551 FD_REG_TDR = 0x03,
552 FD_REG_MSR = 0x04,
553 FD_REG_DSR = 0x04,
554 FD_REG_FIFO = 0x05,
555 FD_REG_DIR = 0x07,
556 FD_REG_CCR = 0x07
557};
558
559enum {
560 FD_CMD_READ_TRACK = 0x02,
561 FD_CMD_SPECIFY = 0x03,
562 FD_CMD_SENSE_DRIVE_STATUS = 0x04,
563 FD_CMD_WRITE = 0x05,
564 FD_CMD_READ = 0x06,
565 FD_CMD_RECALIBRATE = 0x07,
566 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
567 FD_CMD_WRITE_DELETED = 0x09,
568 FD_CMD_READ_ID = 0x0a,
569 FD_CMD_READ_DELETED = 0x0c,
570 FD_CMD_FORMAT_TRACK = 0x0d,
571 FD_CMD_DUMPREG = 0x0e,
572 FD_CMD_SEEK = 0x0f,
573 FD_CMD_VERSION = 0x10,
574 FD_CMD_SCAN_EQUAL = 0x11,
575 FD_CMD_PERPENDICULAR_MODE = 0x12,
576 FD_CMD_CONFIGURE = 0x13,
577 FD_CMD_LOCK = 0x14,
578 FD_CMD_VERIFY = 0x16,
579 FD_CMD_POWERDOWN_MODE = 0x17,
580 FD_CMD_PART_ID = 0x18,
581 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
582 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
583 FD_CMD_SAVE = 0x2e,
584 FD_CMD_OPTION = 0x33,
585 FD_CMD_RESTORE = 0x4e,
586 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
587 FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
588 FD_CMD_FORMAT_AND_WRITE = 0xcd,
589 FD_CMD_RELATIVE_SEEK_IN = 0xcf
590};
591
592enum {
593 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
594 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
595 FD_CONFIG_POLL = 0x10, /* Poll enabled */
596 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
597 FD_CONFIG_EIS = 0x40 /* No implied seeks */
598};
599
600enum {
601 FD_SR0_EQPMT = 0x10,
602 FD_SR0_SEEK = 0x20,
603 FD_SR0_ABNTERM = 0x40,
604 FD_SR0_INVCMD = 0x80,
605 FD_SR0_RDYCHG = 0xc0
606};
607
608enum {
609 FD_SR1_MA = 0x01, /* Missing address mark */
610 FD_SR1_NW = 0x02, /* Not writable */
611 FD_SR1_ND = 0x04, /* No data */
612 FD_SR1_EC = 0x80 /* End of cylinder */
613};
614
615enum {
616 FD_SR2_MD = 0x01, /* Missing data address mark */
617 FD_SR2_SNS = 0x04, /* Scan not satisfied */
618 FD_SR2_SEH = 0x08 /* Scan equal hit */
619};
620
621enum {
622 FD_SRA_DIR = 0x01,
623 FD_SRA_nWP = 0x02,
624 FD_SRA_nINDX = 0x04,
625 FD_SRA_HDSEL = 0x08,
626 FD_SRA_nTRK0 = 0x10,
627 FD_SRA_STEP = 0x20,
628 FD_SRA_nDRV2 = 0x40,
629 FD_SRA_INTPEND = 0x80
630};
631
632enum {
633 FD_SRB_MTR0 = 0x01,
634 FD_SRB_MTR1 = 0x02,
635 FD_SRB_WGATE = 0x04,
636 FD_SRB_RDATA = 0x08,
637 FD_SRB_WDATA = 0x10,
638 FD_SRB_DR0 = 0x20
639};
640
641enum {
642#if MAX_FD == 4
643 FD_DOR_SELMASK = 0x03,
644#else
645 FD_DOR_SELMASK = 0x01,
646#endif
647 FD_DOR_nRESET = 0x04,
648 FD_DOR_DMAEN = 0x08,
649 FD_DOR_MOTEN0 = 0x10,
650 FD_DOR_MOTEN1 = 0x20,
651 FD_DOR_MOTEN2 = 0x40,
652 FD_DOR_MOTEN3 = 0x80
653};
654
655enum {
656#if MAX_FD == 4
657 FD_TDR_BOOTSEL = 0x0c
658#else
659 FD_TDR_BOOTSEL = 0x04
660#endif
661};
662
663enum {
664 FD_DSR_DRATEMASK= 0x03,
665 FD_DSR_PWRDOWN = 0x40,
666 FD_DSR_SWRESET = 0x80
667};
668
669enum {
670 FD_MSR_DRV0BUSY = 0x01,
671 FD_MSR_DRV1BUSY = 0x02,
672 FD_MSR_DRV2BUSY = 0x04,
673 FD_MSR_DRV3BUSY = 0x08,
674 FD_MSR_CMDBUSY = 0x10,
675 FD_MSR_NONDMA = 0x20,
676 FD_MSR_DIO = 0x40,
677 FD_MSR_RQM = 0x80
678};
679
680enum {
681 FD_DIR_DSKCHG = 0x80
682};
683
684#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
685#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
686#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
687
688#ifdef VBOX
689/**
690 * Floppy controller state.
691 *
692 * @implements PDMILEDPORTS
693 */
694#endif
695struct fdctrl_t {
696#ifndef VBOX
697 fdctrl_t *fdctrl;
698#endif
699 /* Controller's identification */
700 uint8_t version;
701 /* HW */
702#ifndef VBOX
703 int irq;
704 int dma_chann;
705#else
706 uint8_t irq_lvl;
707 uint8_t dma_chann;
708#endif
709 uint32_t io_base;
710 /* Controller state */
711#ifndef VBOX
712 QEMUTimer *result_timer;
713#else
714 struct TMTIMER *result_timer;
715#endif
716 uint8_t sra;
717 uint8_t srb;
718 uint8_t dor;
719 uint8_t tdr;
720 uint8_t dsr;
721 uint8_t msr;
722 uint8_t cur_drv;
723 uint8_t status0;
724 uint8_t status1;
725 uint8_t status2;
726 /* Command FIFO */
727 uint8_t fifo[FD_SECTOR_LEN];
728 uint32_t data_pos;
729 uint32_t data_len;
730 uint8_t data_state;
731 uint8_t data_dir;
732 uint8_t eot; /* last wanted sector */
733 /* States kept only to be returned back */
734 /* Timers state */
735 uint8_t timer0;
736 uint8_t timer1;
737 /* precompensation */
738 uint8_t precomp_trk;
739 uint8_t config;
740 uint8_t lock;
741 /* Power down config (also with status regB access mode */
742 uint8_t pwrd;
743 /* Floppy drives */
744 uint8_t num_floppies;
745 fdrive_t drives[MAX_FD];
746 uint8_t reset_sensei;
747#ifdef VBOX
748 /** Pointer to device instance. */
749 PPDMDEVINS pDevIns;
750
751 /** Status LUN: The base interface. */
752 PDMIBASE IBaseStatus;
753 /** Status LUN: The Leds interface. */
754 PDMILEDPORTS ILeds;
755 /** Status LUN: The Partner of ILeds. */
756 PPDMILEDCONNECTORS pLedsConnector;
757#endif
758};
759
760static uint32_t fdctrl_read (void *opaque, uint32_t reg)
761{
762 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
763 uint32_t retval;
764
765 switch (reg) {
766 case FD_REG_SRA:
767 retval = fdctrl_read_statusA(fdctrl);
768 break;
769 case FD_REG_SRB:
770 retval = fdctrl_read_statusB(fdctrl);
771 break;
772 case FD_REG_DOR:
773 retval = fdctrl_read_dor(fdctrl);
774 break;
775 case FD_REG_TDR:
776 retval = fdctrl_read_tape(fdctrl);
777 break;
778 case FD_REG_MSR:
779 retval = fdctrl_read_main_status(fdctrl);
780 break;
781 case FD_REG_FIFO:
782 retval = fdctrl_read_data(fdctrl);
783 break;
784 case FD_REG_DIR:
785 retval = fdctrl_read_dir(fdctrl);
786 break;
787 default:
788 retval = (uint32_t)(-1);
789 break;
790 }
791 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
792
793 return retval;
794}
795
796static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
797{
798 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
799
800 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
801
802 switch (reg) {
803 case FD_REG_DOR:
804 fdctrl_write_dor(fdctrl, value);
805 break;
806 case FD_REG_TDR:
807 fdctrl_write_tape(fdctrl, value);
808 break;
809 case FD_REG_DSR:
810 fdctrl_write_rate(fdctrl, value);
811 break;
812 case FD_REG_FIFO:
813 fdctrl_write_data(fdctrl, value);
814 break;
815 case FD_REG_CCR:
816 fdctrl_write_ccr(fdctrl, value);
817 break;
818 default:
819 break;
820 }
821}
822
823/* Change IRQ state */
824static void fdctrl_reset_irq(fdctrl_t *fdctrl)
825{
826 if (!(fdctrl->sra & FD_SRA_INTPEND))
827 return;
828 FLOPPY_DPRINTF("Reset interrupt\n");
829#ifdef VBOX
830 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
831#else
832 qemu_set_irq(fdctrl->irq, 0);
833#endif
834 fdctrl->sra &= ~FD_SRA_INTPEND;
835}
836
837static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
838{
839 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
840 FLOPPY_DPRINTF("Raising interrupt...\n");
841#ifdef VBOX
842 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
843#else
844 qemu_set_irq(fdctrl->irq, 1);
845#endif
846 fdctrl->sra |= FD_SRA_INTPEND;
847 }
848 if (status0 & FD_SR0_SEEK) {
849 fdrive_t *cur_drv;
850
851 /* A seek clears the disk change line (if a disk is inserted). */
852 cur_drv = get_cur_drv(fdctrl);
853 if (cur_drv->max_track)
854 cur_drv->dsk_chg = false;
855 }
856
857 fdctrl->reset_sensei = 0;
858 fdctrl->status0 = status0;
859 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
860}
861
862/* Reset controller */
863static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
864{
865 int i;
866
867 FLOPPY_DPRINTF("reset controller\n");
868 fdctrl_reset_irq(fdctrl);
869 /* Initialise controller */
870 fdctrl->sra = 0;
871 fdctrl->srb = 0xc0;
872#ifdef VBOX
873 if (!fdctrl->drives[1].pDrvMedia)
874#else
875 if (!fdctrl->drives[1].bs)
876#endif
877 fdctrl->sra |= FD_SRA_nDRV2;
878 fdctrl->cur_drv = 0;
879 fdctrl->dor = FD_DOR_nRESET;
880 fdctrl->dor |= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
881 fdctrl->msr = FD_MSR_RQM;
882 /* FIFO state */
883 fdctrl->data_pos = 0;
884 fdctrl->data_len = 0;
885 fdctrl->data_state = 0;
886 fdctrl->data_dir = FD_DIR_WRITE;
887 for (i = 0; i < MAX_FD; i++)
888 fd_recalibrate(&fdctrl->drives[i]);
889 fdctrl_reset_fifo(fdctrl);
890 if (do_irq) {
891 fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
892 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
893 }
894}
895
896static inline fdrive_t *drv0(fdctrl_t *fdctrl)
897{
898 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
899}
900
901static inline fdrive_t *drv1(fdctrl_t *fdctrl)
902{
903 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
904 return &fdctrl->drives[1];
905 else
906 return &fdctrl->drives[0];
907}
908
909#if MAX_FD == 4
910static inline fdrive_t *drv2(fdctrl_t *fdctrl)
911{
912 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
913 return &fdctrl->drives[2];
914 else
915 return &fdctrl->drives[1];
916}
917
918static inline fdrive_t *drv3(fdctrl_t *fdctrl)
919{
920 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
921 return &fdctrl->drives[3];
922 else
923 return &fdctrl->drives[2];
924}
925#endif
926
927static fdrive_t *get_cur_drv(fdctrl_t *fdctrl)
928{
929 switch (fdctrl->cur_drv) {
930 case 0: return drv0(fdctrl);
931 case 1: return drv1(fdctrl);
932#if MAX_FD == 4
933 case 2: return drv2(fdctrl);
934 case 3: return drv3(fdctrl);
935#endif
936 default: return NULL;
937 }
938}
939
940/* Status A register : 0x00 (read-only) */
941static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
942{
943 uint32_t retval = fdctrl->sra;
944
945 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
946
947 return retval;
948}
949
950/* Status B register : 0x01 (read-only) */
951static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
952{
953 uint32_t retval = fdctrl->srb;
954
955 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
956
957 return retval;
958}
959
960/* Digital output register : 0x02 */
961static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
962{
963 uint32_t retval = fdctrl->dor;
964
965 /* Selected drive */
966 retval |= fdctrl->cur_drv;
967 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
968
969 return retval;
970}
971
972static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
973{
974 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
975
976 /* Motors */
977 if (value & FD_DOR_MOTEN0)
978 fdctrl->srb |= FD_SRB_MTR0;
979 else
980 fdctrl->srb &= ~FD_SRB_MTR0;
981 if (value & FD_DOR_MOTEN1)
982 fdctrl->srb |= FD_SRB_MTR1;
983 else
984 fdctrl->srb &= ~FD_SRB_MTR1;
985
986 /* Drive */
987 if (value & 1)
988 fdctrl->srb |= FD_SRB_DR0;
989 else
990 fdctrl->srb &= ~FD_SRB_DR0;
991
992 /* Reset */
993 if (!(value & FD_DOR_nRESET)) {
994 if (fdctrl->dor & FD_DOR_nRESET) {
995 FLOPPY_DPRINTF("controller enter RESET state\n");
996 }
997 } else {
998 if (!(fdctrl->dor & FD_DOR_nRESET)) {
999 FLOPPY_DPRINTF("controller out of RESET state\n");
1000 fdctrl_reset(fdctrl, 1);
1001 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1002 }
1003 }
1004 /* Selected drive */
1005 fdctrl->cur_drv = value & FD_DOR_SELMASK;
1006
1007 fdctrl->dor = value;
1008}
1009
1010/* Tape drive register : 0x03 */
1011static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
1012{
1013 uint32_t retval = fdctrl->tdr;
1014
1015 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
1016
1017 return retval;
1018}
1019
1020static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
1021{
1022 /* Reset mode */
1023 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1024 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1025 return;
1026 }
1027 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
1028 /* Disk boot selection indicator */
1029 fdctrl->tdr = value & FD_TDR_BOOTSEL;
1030 /* Tape indicators: never allow */
1031}
1032
1033/* Main status register : 0x04 (read) */
1034static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
1035{
1036 uint32_t retval = fdctrl->msr;
1037
1038 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1039 fdctrl->dor |= FD_DOR_nRESET;
1040
1041 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
1042
1043 return retval;
1044}
1045
1046/* Data select rate register : 0x04 (write) */
1047static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
1048{
1049 /* Reset mode */
1050 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1051 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1052 return;
1053 }
1054 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
1055 /* Reset: autoclear */
1056 if (value & FD_DSR_SWRESET) {
1057 fdctrl->dor &= ~FD_DOR_nRESET;
1058 fdctrl_reset(fdctrl, 1);
1059 fdctrl->dor |= FD_DOR_nRESET;
1060 }
1061 if (value & FD_DSR_PWRDOWN) {
1062 fdctrl_reset(fdctrl, 1);
1063 }
1064 fdctrl->dsr = value;
1065}
1066
1067/* Configuration control register : 0x07 (write) */
1068static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
1069{
1070 /* Reset mode */
1071 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1072 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1073 return;
1074 }
1075 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1076
1077 /* Only the rate selection bits used in AT mode, and we
1078 * store those in the DSR.
1079 */
1080 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | (value & FD_DSR_DRATEMASK);
1081}
1082
1083static int fdctrl_media_changed(fdrive_t *drv)
1084{
1085#ifdef VBOX
1086 return drv->dsk_chg;
1087#else
1088 int ret;
1089
1090 if (!drv->bs)
1091 return 0;
1092 ret = bdrv_media_changed(drv->bs);
1093 if (ret) {
1094 fd_revalidate(drv);
1095 }
1096 return ret;
1097#endif
1098}
1099
1100/* Digital input register : 0x07 (read-only) */
1101static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1102{
1103 uint32_t retval = 0;
1104
1105#ifdef VBOX
1106 /* The change line signal is reported by the currently selected
1107 * drive. If the corresponding motor on bit is not set, the drive
1108 * is *not* selected!
1109 */
1110 if (fdctrl_media_changed(get_cur_drv(fdctrl))
1111 && (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1112#else
1113 if (fdctrl_media_changed(drv0(fdctrl))
1114 || fdctrl_media_changed(drv1(fdctrl))
1115#if MAX_FD == 4
1116 || fdctrl_media_changed(drv2(fdctrl))
1117 || fdctrl_media_changed(drv3(fdctrl))
1118#endif
1119 )
1120#endif
1121 retval |= FD_DIR_DSKCHG;
1122 if (retval != 0)
1123 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1124
1125 return retval;
1126}
1127
1128/* FIFO state control */
1129static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1130{
1131 fdctrl->data_dir = FD_DIR_WRITE;
1132 fdctrl->data_pos = 0;
1133 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1134}
1135
1136/* Set FIFO status for the host to read */
1137static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1138{
1139 fdctrl->data_dir = FD_DIR_READ;
1140 fdctrl->data_len = fifo_len;
1141 fdctrl->data_pos = 0;
1142 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1143 if (do_irq)
1144 fdctrl_raise_irq(fdctrl, 0x00);
1145}
1146
1147/* Set an error: unimplemented/unknown command */
1148static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1149{
1150 RT_NOREF(direction);
1151 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1152 fdctrl->fifo[0] = FD_SR0_INVCMD;
1153 fdctrl_set_fifo(fdctrl, 1, 0);
1154}
1155
1156/* Seek to next sector */
1157static int fdctrl_seek_to_next_sect(fdctrl_t *fdctrl, fdrive_t *cur_drv)
1158{
1159 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1160 cur_drv->head, cur_drv->track, cur_drv->sect,
1161 fd_sector(cur_drv));
1162 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1163 error in fact */
1164 if (cur_drv->sect >= cur_drv->last_sect ||
1165 cur_drv->sect == fdctrl->eot) {
1166 cur_drv->sect = 1;
1167 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1168 if (cur_drv->head == 0 &&
1169 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1170 cur_drv->head = 1;
1171 } else {
1172 cur_drv->head = 0;
1173 cur_drv->ltrk++;
1174 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1175 return 0;
1176 }
1177 } else {
1178 cur_drv->ltrk++;
1179 return 0;
1180 }
1181 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1182 cur_drv->head, cur_drv->track,
1183 cur_drv->sect, fd_sector(cur_drv));
1184 } else {
1185 cur_drv->sect++;
1186 }
1187 return 1;
1188}
1189
1190/* Callback for transfer end (stop or abort) */
1191static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1192 uint8_t status1, uint8_t status2)
1193{
1194 fdrive_t *cur_drv;
1195
1196 cur_drv = get_cur_drv(fdctrl);
1197 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1198 status0, status1, status2,
1199 status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1200 fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1201 fdctrl->fifo[1] = status1;
1202 fdctrl->fifo[2] = status2;
1203 fdctrl->fifo[3] = cur_drv->ltrk;
1204 fdctrl->fifo[4] = cur_drv->head;
1205 fdctrl->fifo[5] = cur_drv->sect;
1206 fdctrl->fifo[6] = FD_SECTOR_SC;
1207 FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1208 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1209 fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1210
1211 fdctrl->data_dir = FD_DIR_READ;
1212 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1213#ifdef VBOX
1214 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1215#else
1216 DMA_release_DREQ(fdctrl->dma_chann);
1217#endif
1218 }
1219 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1220 fdctrl->msr &= ~FD_MSR_NONDMA;
1221 fdctrl_set_fifo(fdctrl, 7, 1);
1222}
1223
1224/* Prepare a data transfer (either DMA or FIFO) */
1225static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1226{
1227 fdrive_t *cur_drv;
1228 uint8_t kh, kt, ks;
1229 int did_seek = 0;
1230
1231 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1232 cur_drv = get_cur_drv(fdctrl);
1233 kt = fdctrl->fifo[2];
1234 kh = fdctrl->fifo[3];
1235 ks = fdctrl->fifo[4];
1236 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1237 GET_CUR_DRV(fdctrl), kh, kt, ks,
1238 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1239 FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1240 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1241 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1242 fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1243 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1244 case 2:
1245 /* sect too big */
1246 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1247 fdctrl->fifo[3] = kt;
1248 fdctrl->fifo[4] = kh;
1249 fdctrl->fifo[5] = ks;
1250 return;
1251 case 3:
1252 /* track too big */
1253 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1254 fdctrl->fifo[3] = kt;
1255 fdctrl->fifo[4] = kh;
1256 fdctrl->fifo[5] = ks;
1257 return;
1258 case 4:
1259 /* No seek enabled */
1260 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1261 fdctrl->fifo[3] = kt;
1262 fdctrl->fifo[4] = kh;
1263 fdctrl->fifo[5] = ks;
1264 return;
1265 case 5:
1266 /* No disk in drive */
1267 /// @todo This is wrong! Command should not complete.
1268 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | 0x08, /*FD_SR1_MA |*/ FD_SR1_ND, 0x00);
1269 fdctrl->fifo[3] = kt;
1270 fdctrl->fifo[4] = kh;
1271 fdctrl->fifo[5] = ks;
1272 return;
1273 case 1:
1274 did_seek = 1;
1275 break;
1276 default:
1277 break;
1278 }
1279 /* Check the data rate. If the programmed data rate does not match
1280 * the currently inserted medium, the operation has to fail.
1281 */
1282#ifdef VBOX
1283 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1284 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1285 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1286 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1287 fdctrl->fifo[3] = kt;
1288 fdctrl->fifo[4] = kh;
1289 fdctrl->fifo[5] = ks;
1290 return;
1291 }
1292#endif
1293 /* Set the FIFO state */
1294 fdctrl->data_dir = direction;
1295 fdctrl->data_pos = 0;
1296 fdctrl->msr |= FD_MSR_CMDBUSY;
1297 if (fdctrl->fifo[0] & 0x80)
1298 fdctrl->data_state |= FD_STATE_MULTI;
1299 else
1300 fdctrl->data_state &= ~FD_STATE_MULTI;
1301 if (did_seek)
1302 fdctrl->data_state |= FD_STATE_SEEK;
1303 else
1304 fdctrl->data_state &= ~FD_STATE_SEEK;
1305 if (fdctrl->fifo[5] == 00) {
1306 fdctrl->data_len = fdctrl->fifo[8];
1307 } else {
1308 int tmp;
1309 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1310 tmp = (fdctrl->fifo[6] - ks + 1);
1311 if (fdctrl->fifo[0] & 0x80)
1312 tmp += fdctrl->fifo[6];
1313 fdctrl->data_len *= tmp;
1314 }
1315 fdctrl->eot = fdctrl->fifo[6];
1316 if (fdctrl->dor & FD_DOR_DMAEN) {
1317 int dma_mode;
1318 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1319#ifndef VBOX
1320 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1321#else
1322 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1323#endif
1324 dma_mode = (dma_mode >> 2) & 3;
1325 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1326 dma_mode, direction,
1327 (128 << fdctrl->fifo[5]) *
1328 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1329 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1330 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1331 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1332 (direction == FD_DIR_READ && (dma_mode == 1 || dma_mode == 0))) {
1333 /* No access is allowed until DMA transfer has completed */
1334 fdctrl->msr &= ~FD_MSR_RQM;
1335 /* Now, we just have to wait for the DMA controller to
1336 * recall us...
1337 */
1338#ifndef VBOX
1339 DMA_hold_DREQ(fdctrl->dma_chann);
1340 DMA_schedule(fdctrl->dma_chann);
1341#else
1342 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1343 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1344#endif
1345 return;
1346 } else {
1347 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1348 }
1349 }
1350 FLOPPY_DPRINTF("start non-DMA transfer\n");
1351 fdctrl->msr |= FD_MSR_NONDMA;
1352 if (direction != FD_DIR_WRITE)
1353 fdctrl->msr |= FD_MSR_DIO;
1354 /* IO based transfer: calculate len */
1355 fdctrl_raise_irq(fdctrl, 0x00);
1356
1357 return;
1358}
1359
1360/* Prepare a format data transfer (either DMA or FIFO) */
1361static void fdctrl_start_format(fdctrl_t *fdctrl)
1362{
1363 fdrive_t *cur_drv;
1364 uint8_t ns, dp, kh, kt, ks;
1365
1366 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1367 cur_drv = get_cur_drv(fdctrl);
1368 kt = cur_drv->track;
1369 kh = (fdctrl->fifo[1] & 0x04) >> 2;
1370 ns = fdctrl->fifo[3];
1371 dp = fdctrl->fifo[5];
1372 ks = 1;
1373 FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1374 GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1375 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1376 switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1377 case 2:
1378 /* sect too big */
1379 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1380 fdctrl->fifo[3] = kt;
1381 fdctrl->fifo[4] = kh;
1382 fdctrl->fifo[5] = ks;
1383 return;
1384 case 3:
1385 /* track too big */
1386 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1387 fdctrl->fifo[3] = kt;
1388 fdctrl->fifo[4] = kh;
1389 fdctrl->fifo[5] = ks;
1390 return;
1391 case 4:
1392 /* No seek enabled */
1393 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1394 fdctrl->fifo[3] = kt;
1395 fdctrl->fifo[4] = kh;
1396 fdctrl->fifo[5] = ks;
1397 return;
1398 case 5:
1399 /* No disk in drive */
1400 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1401 fdctrl->fifo[3] = kt;
1402 fdctrl->fifo[4] = kh;
1403 fdctrl->fifo[5] = ks;
1404 return;
1405 case 1:
1406 break;
1407 default:
1408 break;
1409 }
1410 /* It's not clear what should happen if the data rate does not match. */
1411#if 0
1412 /* Check the data rate. If the programmed data rate does not match
1413 * the currently inserted medium, the operation has to fail.
1414 */
1415 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1416 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1417 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1418 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1419 fdctrl->fifo[3] = kt;
1420 fdctrl->fifo[4] = kh;
1421 fdctrl->fifo[5] = ks;
1422 return;
1423 }
1424#endif
1425 /* Set the FIFO state */
1426 fdctrl->data_dir = FD_DIR_FORMAT;
1427 fdctrl->data_pos = 0;
1428 fdctrl->msr |= FD_MSR_CMDBUSY;
1429 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1430 fdctrl->data_len = ns * 4;
1431 fdctrl->eot = ns;
1432 if (fdctrl->dor & FD_DOR_DMAEN) {
1433 int dma_mode;
1434 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1435#ifndef VBOX
1436 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1437#else
1438 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1439#endif
1440 dma_mode = (dma_mode >> 2) & 3;
1441 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1442 dma_mode, fdctrl->data_dir,
1443 (128 << fdctrl->fifo[2]) *
1444 (cur_drv->last_sect + 1), fdctrl->data_len);
1445 if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1446 /* No access is allowed until DMA transfer has completed */
1447 fdctrl->msr &= ~FD_MSR_RQM;
1448 /* Now, we just have to wait for the DMA controller to
1449 * recall us...
1450 */
1451#ifndef VBOX
1452 DMA_hold_DREQ(fdctrl->dma_chann);
1453 DMA_schedule(fdctrl->dma_chann);
1454#else
1455 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1456 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1457#endif
1458 return;
1459 } else {
1460 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1461 }
1462 }
1463 FLOPPY_DPRINTF("start non-DMA format\n");
1464 fdctrl->msr |= FD_MSR_NONDMA;
1465 /* IO based transfer: calculate len */
1466 fdctrl_raise_irq(fdctrl, 0x00);
1467
1468 return;
1469}
1470
1471/* Prepare a transfer of deleted data */
1472static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1473{
1474 RT_NOREF(direction);
1475 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1476
1477 /* We don't handle deleted data,
1478 * so we don't return *ANYTHING*
1479 */
1480 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1481}
1482
1483#ifdef VBOX
1484/* Block driver read/write wrappers. */
1485
1486static int blk_write(fdrive_t *drv, int64_t sector_num, const uint8_t *buf, int nb_sectors)
1487{
1488 int rc;
1489
1490 drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1491
1492 rc = drv->pDrvMedia->pfnWrite(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1493 buf, nb_sectors * FD_SECTOR_LEN);
1494
1495 drv->Led.Actual.s.fWriting = 0;
1496 if (RT_FAILURE(rc))
1497 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1498
1499 return rc;
1500}
1501
1502static int blk_read(fdrive_t *drv, int64_t sector_num, uint8_t *buf, int nb_sectors)
1503{
1504 int rc;
1505
1506 drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1507
1508 rc = drv->pDrvMedia->pfnRead(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1509 buf, nb_sectors * FD_SECTOR_LEN);
1510
1511 drv->Led.Actual.s.fReading = 0;
1512
1513 if (RT_FAILURE(rc))
1514 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1515
1516 return rc;
1517}
1518
1519#endif
1520
1521/* handlers for DMA transfers */
1522#ifdef VBOX
1523static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
1524 void *opaque,
1525 unsigned nchan,
1526 uint32_t dma_pos,
1527 uint32_t dma_len)
1528#else
1529static int fdctrl_transfer_handler (void *opaque, int nchan,
1530 int dma_pos, int dma_len)
1531#endif
1532{
1533 RT_NOREF(pDevIns, dma_pos);
1534 fdctrl_t *fdctrl;
1535 fdrive_t *cur_drv;
1536#ifdef VBOX
1537 int rc;
1538 uint32_t len = 0;
1539 uint32_t start_pos, rel_pos;
1540#else
1541 int len, start_pos, rel_pos;
1542#endif
1543 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1544
1545 fdctrl = (fdctrl_t *)opaque;
1546 if (fdctrl->msr & FD_MSR_RQM) {
1547 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1548 return 0;
1549 }
1550 cur_drv = get_cur_drv(fdctrl);
1551 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1552 fdctrl->data_dir == FD_DIR_SCANH)
1553 status2 = FD_SR2_SNS;
1554 if (dma_len > fdctrl->data_len)
1555 dma_len = fdctrl->data_len;
1556#ifndef VBOX
1557 if (cur_drv->bs == NULL)
1558#else /* !VBOX */
1559 if (cur_drv->pDrvMedia == NULL)
1560#endif
1561 {
1562 if (fdctrl->data_dir == FD_DIR_WRITE)
1563 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1564 else
1565 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1566 Assert(len == 0);
1567 goto transfer_error;
1568 }
1569
1570#ifdef VBOX
1571 if (cur_drv->ro)
1572 {
1573 if (fdctrl->data_dir == FD_DIR_WRITE || fdctrl->data_dir == FD_DIR_FORMAT)
1574 {
1575 /* Handle readonly medium early, no need to do DMA, touch the
1576 * LED or attempt any writes. A real floppy doesn't attempt
1577 * to write to readonly media either. */
1578 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1579 0x00);
1580 Assert(len == 0);
1581 goto transfer_error;
1582 }
1583 }
1584#endif
1585
1586
1587 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1588 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1589 len = dma_len - fdctrl->data_pos;
1590 if (len + rel_pos > FD_SECTOR_LEN)
1591 len = FD_SECTOR_LEN - rel_pos;
1592 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1593 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1594 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1595 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1596 fd_sector(cur_drv) * FD_SECTOR_LEN);
1597 if (fdctrl->data_dir != FD_DIR_FORMAT &&
1598 (fdctrl->data_dir != FD_DIR_WRITE ||
1599 len < FD_SECTOR_LEN || rel_pos != 0)) {
1600 /* READ & SCAN commands and realign to a sector for WRITE */
1601#ifdef VBOX
1602 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1603 if (RT_FAILURE(rc))
1604#else
1605 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1606 fdctrl->fifo, 1) < 0)
1607#endif
1608 {
1609 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1610 fd_sector(cur_drv));
1611 /* Sure, image size is too small... */
1612 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1613 }
1614 }
1615 switch (fdctrl->data_dir) {
1616 case FD_DIR_READ:
1617 /* READ commands */
1618#ifdef VBOX
1619 {
1620 uint32_t read;
1621 int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, nchan,
1622 fdctrl->fifo + rel_pos,
1623 fdctrl->data_pos,
1624 len, &read);
1625 AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1626 }
1627#else
1628 DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1629 fdctrl->data_pos, len);
1630#endif
1631/* cpu_physical_memory_write(addr + fdctrl->data_pos, */
1632/* fdctrl->fifo + rel_pos, len); */
1633 break;
1634 case FD_DIR_WRITE:
1635 /* WRITE commands */
1636#ifdef VBOX
1637 {
1638 uint32_t written;
1639 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1640 fdctrl->fifo + rel_pos,
1641 fdctrl->data_pos,
1642 len, &written);
1643 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1644 }
1645
1646 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1647 if (RT_FAILURE(rc))
1648#else
1649 DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1650 fdctrl->data_pos, len);
1651 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1652 fdctrl->fifo, 1) < 0)
1653#endif
1654 {
1655 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1656 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1657 goto transfer_error;
1658 }
1659 break;
1660#ifdef VBOX
1661 case FD_DIR_FORMAT:
1662 /* FORMAT command */
1663 {
1664 uint8_t eot = fdctrl->fifo[3];
1665 uint8_t filler = fdctrl->fifo[5];
1666 uint32_t written;
1667 int sct;
1668 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1669 fdctrl->fifo + rel_pos,
1670 fdctrl->data_pos,
1671 len, &written);
1672 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1673
1674 /* Fill the entire track with desired data pattern. */
1675 FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1676 eot, filler);
1677 memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1678 for (sct = 0; sct < eot; ++sct)
1679 {
1680 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1681 if (RT_FAILURE(rc))
1682 {
1683 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1684 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1685 goto transfer_error;
1686 }
1687 fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1688 }
1689 }
1690 break;
1691#endif
1692 default:
1693 /* SCAN commands */
1694 {
1695 uint8_t tmpbuf[FD_SECTOR_LEN];
1696 int ret;
1697#ifdef VBOX
1698 uint32_t read;
1699 int rc2 = PDMDevHlpDMAReadMemory (fdctrl->pDevIns, nchan, tmpbuf,
1700 fdctrl->data_pos, len, &read);
1701 AssertMsg(RT_SUCCESS(rc2), ("DMAReadMemory -> %Rrc2\n", rc2)); NOREF(rc2);
1702#else
1703 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1704#endif
1705 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1706 if (ret == 0) {
1707 status2 = FD_SR2_SEH;
1708 goto end_transfer;
1709 }
1710 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1711 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1712 status2 = 0x00;
1713 goto end_transfer;
1714 }
1715 }
1716 break;
1717 }
1718 fdctrl->data_pos += len;
1719 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1720 if (rel_pos == 0) {
1721 /* Seek to next sector */
1722 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1723 break;
1724 }
1725 }
1726end_transfer:
1727 len = fdctrl->data_pos - start_pos;
1728 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1729 fdctrl->data_pos, len, fdctrl->data_len);
1730 if (fdctrl->data_dir == FD_DIR_SCANE ||
1731 fdctrl->data_dir == FD_DIR_SCANL ||
1732 fdctrl->data_dir == FD_DIR_SCANH)
1733 status2 = FD_SR2_SEH;
1734 if (FD_DID_SEEK(fdctrl->data_state))
1735 status0 |= FD_SR0_SEEK;
1736 fdctrl->data_len -= len;
1737 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1738transfer_error:
1739
1740 return len;
1741}
1742
1743/* Data register : 0x05 */
1744static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1745{
1746 fdrive_t *cur_drv;
1747 uint32_t retval = 0;
1748 unsigned pos;
1749#ifdef VBOX
1750 int rc;
1751#endif
1752
1753 cur_drv = get_cur_drv(fdctrl);
1754 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1755 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1756 FLOPPY_ERROR("controller not ready for reading\n");
1757 return 0;
1758 }
1759 pos = fdctrl->data_pos % FD_SECTOR_LEN;
1760 if (fdctrl->msr & FD_MSR_NONDMA) {
1761 if (pos == 0) {
1762 if (fdctrl->data_pos != 0)
1763 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1764 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1765 fd_sector(cur_drv));
1766 return 0;
1767 }
1768#ifdef VBOX
1769 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1770 if (RT_FAILURE(rc))
1771#else
1772 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0)
1773#endif
1774 {
1775 FLOPPY_DPRINTF("error getting sector %d\n",
1776 fd_sector(cur_drv));
1777 /* Sure, image size is too small... */
1778 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1779 }
1780 }
1781 }
1782 retval = fdctrl->fifo[pos];
1783 if (++fdctrl->data_pos == fdctrl->data_len) {
1784 fdctrl->data_pos = 0;
1785 /* Switch from transfer mode to status mode
1786 * then from status mode to command mode
1787 */
1788 if (fdctrl->msr & FD_MSR_NONDMA) {
1789 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1790 } else {
1791 fdctrl_reset_fifo(fdctrl);
1792 fdctrl_reset_irq(fdctrl);
1793 }
1794 }
1795 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1796
1797 return retval;
1798}
1799
1800static void fdctrl_format_sector(fdctrl_t *fdctrl)
1801{
1802 fdrive_t *cur_drv;
1803 uint8_t kh, kt, ks;
1804#ifdef VBOX
1805 int ok = 0, rc;
1806#endif
1807
1808 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1809 cur_drv = get_cur_drv(fdctrl);
1810 kt = fdctrl->fifo[6];
1811 kh = fdctrl->fifo[7];
1812 ks = fdctrl->fifo[8];
1813 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1814 GET_CUR_DRV(fdctrl), kh, kt, ks,
1815 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1816 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1817 case 2:
1818 /* sect too big */
1819 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1820 fdctrl->fifo[3] = kt;
1821 fdctrl->fifo[4] = kh;
1822 fdctrl->fifo[5] = ks;
1823 return;
1824 case 3:
1825 /* track too big */
1826 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1827 fdctrl->fifo[3] = kt;
1828 fdctrl->fifo[4] = kh;
1829 fdctrl->fifo[5] = ks;
1830 return;
1831 case 4:
1832 /* No seek enabled */
1833 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1834 fdctrl->fifo[3] = kt;
1835 fdctrl->fifo[4] = kh;
1836 fdctrl->fifo[5] = ks;
1837 return;
1838 case 5:
1839 /* No disk in drive */
1840 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1841 fdctrl->fifo[3] = kt;
1842 fdctrl->fifo[4] = kh;
1843 fdctrl->fifo[5] = ks;
1844 return;
1845 case 1:
1846 fdctrl->data_state |= FD_STATE_SEEK;
1847 break;
1848 default:
1849 break;
1850 }
1851 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1852#ifdef VBOX
1853 if (cur_drv->pDrvMedia) {
1854 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1855 if (RT_FAILURE (rc)) {
1856 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1857 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1858 } else {
1859 ok = 1;
1860 }
1861 }
1862 if (ok) {
1863#else
1864 if (cur_drv->bs == NULL ||
1865 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1866 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1867 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1868 } else {
1869#endif
1870 if (cur_drv->sect == cur_drv->last_sect) {
1871 fdctrl->data_state &= ~FD_STATE_FORMAT;
1872 /* Last sector done */
1873 if (FD_DID_SEEK(fdctrl->data_state))
1874 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1875 else
1876 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1877 } else {
1878 /* More to do */
1879 fdctrl->data_pos = 0;
1880 fdctrl->data_len = 4;
1881 }
1882 }
1883}
1884
1885static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1886{
1887 RT_NOREF(direction);
1888 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1889 fdctrl->fifo[0] = fdctrl->lock << 4;
1890 fdctrl_set_fifo(fdctrl, 1, 0);
1891}
1892
1893static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1894{
1895 RT_NOREF(direction);
1896 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1897
1898 /* Drives position */
1899 fdctrl->fifo[0] = drv0(fdctrl)->track;
1900 fdctrl->fifo[1] = drv1(fdctrl)->track;
1901#if MAX_FD == 4
1902 fdctrl->fifo[2] = drv2(fdctrl)->track;
1903 fdctrl->fifo[3] = drv3(fdctrl)->track;
1904#else
1905 fdctrl->fifo[2] = 0;
1906 fdctrl->fifo[3] = 0;
1907#endif
1908 /* timers */
1909 fdctrl->fifo[4] = fdctrl->timer0;
1910 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1911 fdctrl->fifo[6] = cur_drv->last_sect;
1912 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1913 (cur_drv->perpendicular << 2);
1914 fdctrl->fifo[8] = fdctrl->config;
1915 fdctrl->fifo[9] = fdctrl->precomp_trk;
1916 fdctrl_set_fifo(fdctrl, 10, 0);
1917}
1918
1919static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1920{
1921 RT_NOREF(direction);
1922 /* Controller's version */
1923 fdctrl->fifo[0] = fdctrl->version;
1924 fdctrl_set_fifo(fdctrl, 1, 0);
1925}
1926
1927static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1928{
1929 RT_NOREF(direction);
1930 fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1931 fdctrl_set_fifo(fdctrl, 1, 0);
1932}
1933
1934static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1935{
1936 RT_NOREF(direction);
1937 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1938
1939 /* Drives position */
1940 drv0(fdctrl)->track = fdctrl->fifo[3];
1941 drv1(fdctrl)->track = fdctrl->fifo[4];
1942#if MAX_FD == 4
1943 drv2(fdctrl)->track = fdctrl->fifo[5];
1944 drv3(fdctrl)->track = fdctrl->fifo[6];
1945#endif
1946 /* timers */
1947 fdctrl->timer0 = fdctrl->fifo[7];
1948 fdctrl->timer1 = fdctrl->fifo[8];
1949 cur_drv->last_sect = fdctrl->fifo[9];
1950 fdctrl->lock = fdctrl->fifo[10] >> 7;
1951 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1952 fdctrl->config = fdctrl->fifo[11];
1953 fdctrl->precomp_trk = fdctrl->fifo[12];
1954 fdctrl->pwrd = fdctrl->fifo[13];
1955 fdctrl_reset_fifo(fdctrl);
1956}
1957
1958static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1959{
1960 RT_NOREF(direction);
1961 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1962
1963 fdctrl->fifo[0] = 0;
1964 fdctrl->fifo[1] = 0;
1965 /* Drives position */
1966 fdctrl->fifo[2] = drv0(fdctrl)->track;
1967 fdctrl->fifo[3] = drv1(fdctrl)->track;
1968#if MAX_FD == 4
1969 fdctrl->fifo[4] = drv2(fdctrl)->track;
1970 fdctrl->fifo[5] = drv3(fdctrl)->track;
1971#else
1972 fdctrl->fifo[4] = 0;
1973 fdctrl->fifo[5] = 0;
1974#endif
1975 /* timers */
1976 fdctrl->fifo[6] = fdctrl->timer0;
1977 fdctrl->fifo[7] = fdctrl->timer1;
1978 fdctrl->fifo[8] = cur_drv->last_sect;
1979 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1980 (cur_drv->perpendicular << 2);
1981 fdctrl->fifo[10] = fdctrl->config;
1982 fdctrl->fifo[11] = fdctrl->precomp_trk;
1983 fdctrl->fifo[12] = fdctrl->pwrd;
1984 fdctrl->fifo[13] = 0;
1985 fdctrl->fifo[14] = 0;
1986 fdctrl_set_fifo(fdctrl, 15, 0);
1987}
1988
1989static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1990{
1991 RT_NOREF(direction);
1992 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1993
1994 FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1995
1996 fdctrl->msr &= ~FD_MSR_RQM;
1997 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1998#ifdef VBOX
1999 TMTimerSetMillies(fdctrl->result_timer, 1000 / 50);
2000#else
2001 qemu_mod_timer(fdctrl->result_timer,
2002 qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
2003#endif
2004}
2005
2006static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
2007{
2008 RT_NOREF(direction);
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
2039static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
2040{
2041 RT_NOREF(direction);
2042 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
2043 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
2044 if (fdctrl->fifo[2] & 1)
2045 fdctrl->dor &= ~FD_DOR_DMAEN;
2046 else
2047 fdctrl->dor |= FD_DOR_DMAEN;
2048 /* No result back */
2049 fdctrl_reset_fifo(fdctrl);
2050}
2051
2052static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
2053{
2054 RT_NOREF(direction);
2055 fdrive_t *cur_drv;
2056
2057 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2058 cur_drv = get_cur_drv(fdctrl);
2059 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2060 /* 1 Byte status back */
2061 fdctrl->fifo[0] = (cur_drv->ro << 6) |
2062 (cur_drv->track == 0 ? 0x10 : 0x00) |
2063 (cur_drv->head << 2) |
2064 GET_CUR_DRV(fdctrl) |
2065 0x28;
2066 fdctrl_set_fifo(fdctrl, 1, 0);
2067}
2068
2069static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
2070{
2071 RT_NOREF(direction);
2072 fdrive_t *cur_drv;
2073 uint8_t st0;
2074
2075 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2076 cur_drv = get_cur_drv(fdctrl);
2077 fd_recalibrate(cur_drv);
2078 fdctrl_reset_fifo(fdctrl);
2079 st0 = FD_SR0_SEEK | GET_CUR_DRV(fdctrl);
2080 /* No drive means no TRK0 signal. */
2081 if (cur_drv->drive == FDRIVE_DRV_NONE)
2082 st0 |= FD_SR0_ABNTERM | FD_SR0_EQPMT;
2083 /* Raise Interrupt */
2084 fdctrl_raise_irq(fdctrl, st0);
2085}
2086
2087static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
2088{
2089 RT_NOREF(direction);
2090 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2091
2092 FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
2093 if(fdctrl->reset_sensei > 0) {
2094 fdctrl->fifo[0] =
2095 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
2096 fdctrl->reset_sensei--;
2097 } else {
2098 /* XXX: status0 handling is broken for read/write
2099 commands, so we do this hack. It should be suppressed
2100 ASAP */
2101 fdctrl->fifo[0] =
2102 FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
2103 /* Hack to preserve SR0 on equipment check failures (no drive). */
2104 if (fdctrl->status0 & FD_SR0_EQPMT)
2105 fdctrl->fifo[0] = fdctrl->status0;
2106 }
2107
2108 fdctrl->fifo[1] = cur_drv->track;
2109 fdctrl_set_fifo(fdctrl, 2, 0);
2110 FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
2111 fdctrl->status0 = FD_SR0_RDYCHG;
2112}
2113
2114static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
2115{
2116 RT_NOREF(direction);
2117 fdrive_t *cur_drv;
2118
2119 FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
2120 fdctrl->fifo[1], fdctrl->fifo[2]);
2121
2122 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2123 cur_drv = get_cur_drv(fdctrl);
2124 fdctrl_reset_fifo(fdctrl);
2125#ifdef VBOX
2126 /* The seek command just sends step pulses to the drive and doesn't care if
2127 * there's a medium inserted or if it's banging the head against the drive.
2128 */
2129 cur_drv->track = fdctrl->fifo[2];
2130 cur_drv->ltrk = cur_drv->track;
2131 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2132 /* Raise Interrupt */
2133 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK | GET_CUR_DRV(fdctrl));
2134#else
2135 if (fdctrl->fifo[2] > cur_drv->max_track) {
2136 fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
2137 } else {
2138 cur_drv->track = fdctrl->fifo[2];
2139 /* Raise Interrupt */
2140 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2141 }
2142#endif
2143}
2144
2145static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
2146{
2147 RT_NOREF(direction);
2148 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2149
2150 if (fdctrl->fifo[1] & 0x80)
2151 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
2152 /* No result back */
2153 fdctrl_reset_fifo(fdctrl);
2154}
2155
2156static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
2157{
2158 RT_NOREF(direction);
2159 fdctrl->config = fdctrl->fifo[2];
2160 fdctrl->precomp_trk = fdctrl->fifo[3];
2161 /* No result back */
2162 fdctrl_reset_fifo(fdctrl);
2163}
2164
2165static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
2166{
2167 RT_NOREF(direction);
2168 fdctrl->pwrd = fdctrl->fifo[1];
2169 fdctrl->fifo[0] = fdctrl->fifo[1];
2170 fdctrl_set_fifo(fdctrl, 1, 0);
2171}
2172
2173static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
2174{
2175 RT_NOREF(direction);
2176 /* No result back */
2177 fdctrl_reset_fifo(fdctrl);
2178}
2179
2180static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
2181{
2182 RT_NOREF(direction);
2183 /* fdrive_t *cur_drv = get_cur_drv(fdctrl); - unused */
2184
2185 /* This command takes a variable number of parameters. It can be terminated
2186 * at any time if the high bit of a parameter is set. Once there are 6 bytes
2187 * in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
2188 */
2189 if (fdctrl->data_len == 7 || (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
2190
2191 /* Command parameters done */
2192 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
2193 /* Data is echoed, but not stored! */
2194 fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
2195 fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
2196 fdctrl->fifo[2] = 0;
2197 fdctrl->fifo[3] = 0;
2198 fdctrl_set_fifo(fdctrl, 4, 0);
2199 } else {
2200 fdctrl_reset_fifo(fdctrl);
2201 }
2202 } else
2203 fdctrl->data_len++; /* Wait for another byte. */
2204}
2205
2206static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2207{
2208 RT_NOREF(direction);
2209 fdrive_t *cur_drv;
2210
2211 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2212 cur_drv = get_cur_drv(fdctrl);
2213 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2214 cur_drv->track = cur_drv->max_track - 1;
2215 } else {
2216 cur_drv->track += fdctrl->fifo[2];
2217 }
2218 fdctrl_reset_fifo(fdctrl);
2219 /* Raise Interrupt */
2220 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2221}
2222
2223static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2224{
2225 RT_NOREF(direction);
2226 fdrive_t *cur_drv;
2227
2228 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2229 cur_drv = get_cur_drv(fdctrl);
2230 if (fdctrl->fifo[2] > cur_drv->track) {
2231 cur_drv->track = 0;
2232 } else {
2233 cur_drv->track -= fdctrl->fifo[2];
2234 }
2235 fdctrl_reset_fifo(fdctrl);
2236 /* Raise Interrupt */
2237 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2238}
2239
2240static const struct {
2241 uint8_t value;
2242 uint8_t mask;
2243 const char* name;
2244 int parameters;
2245 void (*handler)(fdctrl_t *fdctrl, int direction);
2246 int direction;
2247} handlers[] = {
2248 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2249 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2250 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2251 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2252 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2253 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2254 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2255 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2256 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2257 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2258 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2259 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2260 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2261 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2262 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2263 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2264 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2265 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2266 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2267 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2268 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2269 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2270 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2271 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2272 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2273 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2274 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2275 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2276 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2277 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2278 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2279 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2280};
2281/* Associate command to an index in the 'handlers' array */
2282static uint8_t command_to_handler[256];
2283
2284static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2285{
2286 fdrive_t *cur_drv;
2287 int pos;
2288
2289 cur_drv = get_cur_drv(fdctrl);
2290 /* Reset mode */
2291 if (!(fdctrl->dor & FD_DOR_nRESET)) {
2292 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2293 return;
2294 }
2295 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
2296 FLOPPY_ERROR("controller not ready for writing\n");
2297 return;
2298 }
2299 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2300 /* Is it write command time ? */
2301 if (fdctrl->msr & FD_MSR_NONDMA) {
2302 /* FIFO data write */
2303 pos = fdctrl->data_pos++;
2304 pos %= FD_SECTOR_LEN;
2305 fdctrl->fifo[pos] = value;
2306 if (pos == FD_SECTOR_LEN - 1 ||
2307 fdctrl->data_pos == fdctrl->data_len) {
2308#ifdef VBOX
2309 blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2310#else
2311 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
2312 fdctrl->fifo, 1);
2313#endif
2314 }
2315 /* Switch from transfer mode to status mode
2316 * then from status mode to command mode
2317 */
2318 if (fdctrl->data_pos == fdctrl->data_len)
2319 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2320 return;
2321 }
2322 if (fdctrl->data_pos == 0) {
2323 /* Command */
2324 fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2325 pos = command_to_handler[value & 0xff];
2326 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2327 fdctrl->data_len = handlers[pos].parameters + 1;
2328 fdctrl->msr |= FD_MSR_CMDBUSY;
2329 }
2330
2331 FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2332 fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;
2333 if (fdctrl->data_pos == fdctrl->data_len) {
2334 /* We now have all parameters
2335 * and will be able to treat the command
2336 */
2337 if (fdctrl->data_state & FD_STATE_FORMAT) {
2338 fdctrl_format_sector(fdctrl);
2339 return;
2340 }
2341
2342 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2343 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2344 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2345 }
2346}
2347
2348static void fdctrl_result_timer(void *opaque)
2349{
2350 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
2351 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2352
2353 /* Pretend we are spinning.
2354 * This is needed for Coherent, which uses READ ID to check for
2355 * sector interleaving.
2356 */
2357 if (cur_drv->last_sect != 0) {
2358 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2359 }
2360 /* READ_ID can't automatically succeed! */
2361#ifdef VBOX
2362 if (!cur_drv->max_track) {
2363 FLOPPY_DPRINTF("read id when no disk in drive\n");
2364 /// @todo This is wrong! Command should not complete.
2365 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2366 } else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2367 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2368 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2369 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2370 } else if (cur_drv->track >= cur_drv->max_track) {
2371 FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2372 cur_drv->track, cur_drv->max_track);
2373 cur_drv->ltrk = 0;
2374 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2375 }
2376 else
2377#endif
2378 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2379}
2380
2381
2382#ifdef VBOX
2383
2384/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2385
2386/**
2387 * @callback_method_impl{FNTMTIMERDEV}
2388 */
2389static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2390{
2391 RT_NOREF(pDevIns, pTimer);
2392 fdctrl_t *fdctrl = (fdctrl_t *)pvUser;
2393 fdctrl_result_timer(fdctrl);
2394}
2395
2396
2397/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2398
2399/**
2400 * @callback_method_impl{FNIOMIOPORTOUT}
2401 */
2402static DECLCALLBACK(int) fdcIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb)
2403{
2404 RT_NOREF(pDevIns);
2405 if (cb == 1)
2406 fdctrl_write (pvUser, uPort & 7, u32);
2407 else
2408 AssertMsgFailed(("uPort=%#x cb=%d u32=%#x\n", uPort, cb, u32));
2409 return VINF_SUCCESS;
2410}
2411
2412
2413/**
2414 * @callback_method_impl{FNIOMIOPORTIN}
2415 */
2416static DECLCALLBACK(int) fdcIoPortRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t *pu32, unsigned cb)
2417{
2418 RT_NOREF(pDevIns);
2419 if (cb == 1)
2420 {
2421 *pu32 = fdctrl_read (pvUser, uPort & 7);
2422 return VINF_SUCCESS;
2423 }
2424 return VERR_IOM_IOPORT_UNUSED;
2425}
2426
2427
2428/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2429
2430/**
2431 * @callback_method_impl{FNSSMDEVSAVEEXEC}
2432 */
2433static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2434{
2435 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2436 unsigned int i;
2437
2438 /* Save the FDC I/O registers... */
2439 SSMR3PutU8(pSSM, pThis->sra);
2440 SSMR3PutU8(pSSM, pThis->srb);
2441 SSMR3PutU8(pSSM, pThis->dor);
2442 SSMR3PutU8(pSSM, pThis->tdr);
2443 SSMR3PutU8(pSSM, pThis->dsr);
2444 SSMR3PutU8(pSSM, pThis->msr);
2445 /* ...the status registers... */
2446 SSMR3PutU8(pSSM, pThis->status0);
2447 SSMR3PutU8(pSSM, pThis->status1);
2448 SSMR3PutU8(pSSM, pThis->status2);
2449 /* ...the command FIFO... */
2450 SSMR3PutU32(pSSM, sizeof(pThis->fifo));
2451 SSMR3PutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2452 SSMR3PutU32(pSSM, pThis->data_pos);
2453 SSMR3PutU32(pSSM, pThis->data_len);
2454 SSMR3PutU8(pSSM, pThis->data_state);
2455 SSMR3PutU8(pSSM, pThis->data_dir);
2456 /* ...and miscellaneous internal FDC state. */
2457 SSMR3PutU8(pSSM, pThis->reset_sensei);
2458 SSMR3PutU8(pSSM, pThis->eot);
2459 SSMR3PutU8(pSSM, pThis->timer0);
2460 SSMR3PutU8(pSSM, pThis->timer1);
2461 SSMR3PutU8(pSSM, pThis->precomp_trk);
2462 SSMR3PutU8(pSSM, pThis->config);
2463 SSMR3PutU8(pSSM, pThis->lock);
2464 SSMR3PutU8(pSSM, pThis->pwrd);
2465 SSMR3PutU8(pSSM, pThis->version);
2466
2467 /* Save the number of drives and per-drive state. Note that the media
2468 * states will be updated in fd_revalidate() and need not be saved.
2469 */
2470 SSMR3PutU8(pSSM, pThis->num_floppies);
2471 Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2472 for (i = 0; i < pThis->num_floppies; ++i)
2473 {
2474 fdrive_t *d = &pThis->drives[i];
2475
2476 SSMR3PutMem(pSSM, &d->Led, sizeof(d->Led));
2477 SSMR3PutU32(pSSM, d->drive);
2478 SSMR3PutU8(pSSM, d->dsk_chg);
2479 SSMR3PutU8(pSSM, d->perpendicular);
2480 SSMR3PutU8(pSSM, d->head);
2481 SSMR3PutU8(pSSM, d->track);
2482 SSMR3PutU8(pSSM, d->sect);
2483 }
2484 return TMR3TimerSave (pThis->result_timer, pSSM);
2485}
2486
2487
2488/**
2489 * @callback_method_impl{FNSSMDEVLOADEXEC}
2490 */
2491static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2492{
2493 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2494 unsigned int i;
2495 uint32_t val32;
2496 uint8_t val8;
2497
2498 if (uVersion > FDC_SAVESTATE_CURRENT)
2499 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2500 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2501
2502 /* The old saved state was significantly different. However, we can get
2503 * back most of the controller state and fix the rest by pretending the
2504 * disk in the drive (if any) has been replaced. At any rate there should
2505 * be no difficulty unless the state was saved during a floppy operation.
2506 */
2507 if (uVersion == FDC_SAVESTATE_OLD)
2508 {
2509 /* First verify a few assumptions. */
2510 AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2511 ("The size of FIFO in saved state doesn't match!\n"),
2512 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2513 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2514 ("The number of drives in old saved state doesn't match!\n"),
2515 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2516 /* Now load the old state. */
2517 SSMR3GetU8(pSSM, &pThis->version);
2518 /* Toss IRQ level, DMA channel, I/O base, and state. */
2519 SSMR3GetU8(pSSM, &val8);
2520 SSMR3GetU8(pSSM, &val8);
2521 SSMR3GetU32(pSSM, &val32);
2522 SSMR3GetU8(pSSM, &val8);
2523 /* Translate dma_en. */
2524 SSMR3GetU8(pSSM, &val8);
2525 if (val8)
2526 pThis->dor |= FD_DOR_DMAEN;
2527 SSMR3GetU8(pSSM, &pThis->cur_drv);
2528 /* Translate bootsel. */
2529 SSMR3GetU8(pSSM, &val8);
2530 pThis->tdr |= val8 << 2;
2531 SSMR3GetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2532 SSMR3GetU32(pSSM, &pThis->data_pos);
2533 SSMR3GetU32(pSSM, &pThis->data_len);
2534 SSMR3GetU8(pSSM, &pThis->data_state);
2535 SSMR3GetU8(pSSM, &pThis->data_dir);
2536 SSMR3GetU8(pSSM, &pThis->status0);
2537 SSMR3GetU8(pSSM, &pThis->eot);
2538 SSMR3GetU8(pSSM, &pThis->timer0);
2539 SSMR3GetU8(pSSM, &pThis->timer1);
2540 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2541 SSMR3GetU8(pSSM, &pThis->config);
2542 SSMR3GetU8(pSSM, &pThis->lock);
2543 SSMR3GetU8(pSSM, &pThis->pwrd);
2544
2545 for (i = 0; i < 2; ++i)
2546 {
2547 fdrive_t *d = &pThis->drives[i];
2548
2549 SSMR3GetMem (pSSM, &d->Led, sizeof (d->Led));
2550 SSMR3GetU32(pSSM, &val32);
2551 d->drive = (fdrive_type_t)val32;
2552 SSMR3GetU32(pSSM, &val32); /* Toss drflags */
2553 SSMR3GetU8(pSSM, &d->perpendicular);
2554 SSMR3GetU8(pSSM, &d->head);
2555 SSMR3GetU8(pSSM, &d->track);
2556 SSMR3GetU8(pSSM, &d->sect);
2557 SSMR3GetU8(pSSM, &val8); /* Toss dir, rw */
2558 SSMR3GetU8(pSSM, &val8);
2559 SSMR3GetU32(pSSM, &val32);
2560 d->flags = (fdrive_flags_t)val32;
2561 SSMR3GetU8(pSSM, &d->last_sect);
2562 SSMR3GetU8(pSSM, &d->max_track);
2563 SSMR3GetU16(pSSM, &d->bps);
2564 SSMR3GetU8(pSSM, &d->ro);
2565 }
2566 }
2567 else /* New state - straightforward. */
2568 {
2569 Assert(uVersion == FDC_SAVESTATE_CURRENT);
2570 /* Load the FDC I/O registers... */
2571 SSMR3GetU8(pSSM, &pThis->sra);
2572 SSMR3GetU8(pSSM, &pThis->srb);
2573 SSMR3GetU8(pSSM, &pThis->dor);
2574 SSMR3GetU8(pSSM, &pThis->tdr);
2575 SSMR3GetU8(pSSM, &pThis->dsr);
2576 SSMR3GetU8(pSSM, &pThis->msr);
2577 /* ...the status registers... */
2578 SSMR3GetU8(pSSM, &pThis->status0);
2579 SSMR3GetU8(pSSM, &pThis->status1);
2580 SSMR3GetU8(pSSM, &pThis->status2);
2581 /* ...the command FIFO, if the size matches... */
2582 SSMR3GetU32(pSSM, &val32);
2583 AssertMsgReturn(sizeof(pThis->fifo) == val32,
2584 ("The size of FIFO in saved state doesn't match!\n"),
2585 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2586 SSMR3GetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2587 SSMR3GetU32(pSSM, &pThis->data_pos);
2588 SSMR3GetU32(pSSM, &pThis->data_len);
2589 SSMR3GetU8(pSSM, &pThis->data_state);
2590 SSMR3GetU8(pSSM, &pThis->data_dir);
2591 /* ...and miscellaneous internal FDC state. */
2592 SSMR3GetU8(pSSM, &pThis->reset_sensei);
2593 SSMR3GetU8(pSSM, &pThis->eot);
2594 SSMR3GetU8(pSSM, &pThis->timer0);
2595 SSMR3GetU8(pSSM, &pThis->timer1);
2596 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2597 SSMR3GetU8(pSSM, &pThis->config);
2598 SSMR3GetU8(pSSM, &pThis->lock);
2599 SSMR3GetU8(pSSM, &pThis->pwrd);
2600 SSMR3GetU8(pSSM, &pThis->version);
2601
2602 /* Validate the number of drives. */
2603 SSMR3GetU8(pSSM, &pThis->num_floppies);
2604 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2605 ("The number of drives in saved state doesn't match!\n"),
2606 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2607
2608 /* Load the per-drive state. */
2609 for (i = 0; i < pThis->num_floppies; ++i)
2610 {
2611 fdrive_t *d = &pThis->drives[i];
2612
2613 SSMR3GetMem(pSSM, &d->Led, sizeof(d->Led));
2614 SSMR3GetU32(pSSM, &val32);
2615 d->drive = (fdrive_type_t)val32;
2616 SSMR3GetU8(pSSM, &d->dsk_chg);
2617 SSMR3GetU8(pSSM, &d->perpendicular);
2618 SSMR3GetU8(pSSM, &d->head);
2619 SSMR3GetU8(pSSM, &d->track);
2620 SSMR3GetU8(pSSM, &d->sect);
2621 }
2622 }
2623 return TMR3TimerLoad (pThis->result_timer, pSSM);
2624}
2625
2626
2627/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2628
2629/**
2630 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2631 */
2632static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2633{
2634 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2635 LogFlow(("fdMountNotify:\n"));
2636 fd_revalidate(pDrv);
2637}
2638
2639
2640/**
2641 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2642 */
2643static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2644{
2645 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2646 LogFlow(("fdUnmountNotify:\n"));
2647 fd_revalidate(pDrv);
2648}
2649
2650
2651/**
2652 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2653 */
2654static DECLCALLBACK(void *) fdQueryInterface (PPDMIBASE pInterface, const char *pszIID)
2655{
2656 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2657
2658 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2659 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pDrv->IPort);
2660 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2661 return NULL;
2662}
2663
2664
2665/**
2666 * @interface_method_impl{PDMIMEDIAPORT,pfnQueryDeviceLocation}
2667 */
2668static DECLCALLBACK(int) fdQueryDeviceLocation(PPDMIMEDIAPORT pInterface, const char **ppcszController,
2669 uint32_t *piInstance, uint32_t *piLUN)
2670{
2671 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IPort);
2672 PPDMDEVINS pDevIns = pDrv->pDevIns;
2673
2674 AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2675 AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2676 AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2677
2678 *ppcszController = pDevIns->pReg->szName;
2679 *piInstance = pDevIns->iInstance;
2680 *piLUN = pDrv->iLUN;
2681
2682 return VINF_SUCCESS;
2683}
2684
2685/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2686
2687/**
2688 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2689 */
2690static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2691{
2692 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2693 if (iLUN < RT_ELEMENTS(pThis->drives)) {
2694 *ppLed = &pThis->drives[iLUN].Led;
2695 Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2696 return VINF_SUCCESS;
2697 }
2698 return VERR_PDM_LUN_NOT_FOUND;
2699}
2700
2701
2702/**
2703 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2704 */
2705static DECLCALLBACK(void *) fdcStatusQueryInterface(PPDMIBASE pInterface, const char *pszIID)
2706{
2707 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2708
2709 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2710 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2711 return NULL;
2712}
2713
2714
2715/**
2716 * Configure a drive.
2717 *
2718 * @returns VBox status code.
2719 * @param drv The drive in question.
2720 * @param pDevIns The driver instance.
2721 * @param fInit Set if we're at init time and can change the drive type.
2722 */
2723static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2724{
2725 static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2726 int rc;
2727
2728 /*
2729 * Reset the LED just to be on the safe side.
2730 */
2731 Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2732 Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2733 drv->Led.Actual.u32 = 0;
2734 drv->Led.Asserted.u32 = 0;
2735
2736 /*
2737 * Try attach the block device and get the interfaces.
2738 */
2739 rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2740 if (RT_SUCCESS (rc)) {
2741 drv->pDrvMedia = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMEDIA);
2742 if (drv->pDrvMedia) {
2743 drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2744 if (drv->pDrvMount) {
2745 fd_init(drv, fInit);
2746 } else {
2747 AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2748 rc = VERR_PDM_MISSING_INTERFACE;
2749 }
2750
2751 } else {
2752 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2753 rc = VERR_PDM_MISSING_INTERFACE;
2754 }
2755 } else {
2756 AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2757 ("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2758 switch (rc) {
2759 case VERR_ACCESS_DENIED:
2760 /* Error already cached by DrvHostBase */
2761 break;
2762 case VERR_PDM_NO_ATTACHED_DRIVER:
2763 /* Legal on architectures without a floppy controller */
2764 break;
2765 default:
2766 rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2767 N_ ("The floppy controller cannot attach to the floppy drive"));
2768 break;
2769 }
2770 }
2771
2772 if (RT_FAILURE (rc)) {
2773 drv->pDrvBase = NULL;
2774 drv->pDrvMedia = NULL;
2775 drv->pDrvMount = NULL;
2776 }
2777 LogFlow (("fdConfig: returns %Rrc\n", rc));
2778 return rc;
2779}
2780
2781
2782/**
2783 * @interface_method_impl{PDMDEVREG,pfnAttach}
2784 *
2785 * This is called when we change block driver for a floppy drive.
2786 */
2787static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2788{
2789 fdctrl_t *fdctrl = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2790 fdrive_t *drv;
2791 int rc;
2792 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2793
2794 AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2795 ("The FDC device does not support hotplugging\n"),
2796 VERR_INVALID_PARAMETER);
2797
2798 /*
2799 * Validate.
2800 */
2801 if (iLUN >= 2) {
2802 AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2803 iLUN));
2804 return VERR_PDM_DEVINS_NO_ATTACH;
2805 }
2806
2807 /*
2808 * Locate the drive and stuff.
2809 */
2810 drv = &fdctrl->drives[iLUN];
2811
2812 /* the usual paranoia */
2813 AssertRelease (!drv->pDrvBase);
2814 AssertRelease (!drv->pDrvMedia);
2815 AssertRelease (!drv->pDrvMount);
2816
2817 rc = fdConfig (drv, pDevIns, false /*fInit*/);
2818 AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2819 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", iLUN, rc));
2820 if (RT_SUCCESS(rc)) {
2821 fd_revalidate (drv);
2822 }
2823
2824 LogFlow (("floppyAttach: returns %Rrc\n", rc));
2825 return rc;
2826}
2827
2828
2829/**
2830 * @interface_method_impl{PDMDEVREG,pfnDetach}
2831 *
2832 * The floppy drive has been temporarily 'unplugged'.
2833 */
2834static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2835{
2836 RT_NOREF(fFlags);
2837 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2838 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2839
2840 switch (iLUN)
2841 {
2842 case 0:
2843 case 1:
2844 {
2845 fdrive_t *drv = &pThis->drives[iLUN];
2846 drv->pDrvBase = NULL;
2847 drv->pDrvMedia = NULL;
2848 drv->pDrvMount = NULL;
2849 break;
2850 }
2851
2852 default:
2853 AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2854 break;
2855 }
2856}
2857
2858
2859/**
2860 * @interface_method_impl{PDMDEVREG,pfnReset}
2861 *
2862 * I haven't check the specs on what's supposed to happen on reset, but we
2863 * should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2864 * at wrong time like we do if this was all void.
2865 */
2866static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2867{
2868 fdctrl_t *pThis = PDMINS_2_DATA (pDevIns, fdctrl_t *);
2869 unsigned i;
2870 LogFlow (("fdcReset:\n"));
2871
2872 fdctrl_reset(pThis, 0);
2873
2874 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2875 fd_revalidate(&pThis->drives[i]);
2876}
2877
2878
2879/**
2880 * @interface_method_impl{PDMDEVREG,pfnConstruct}
2881 */
2882static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2883{
2884 RT_NOREF(iInstance);
2885 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2886 int rc;
2887 unsigned i, j;
2888 int ii;
2889 bool mem_mapped;
2890 uint16_t io_base;
2891 uint8_t irq_lvl, dma_chann;
2892 PPDMIBASE pBase;
2893
2894 Assert(iInstance == 0);
2895 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2896
2897 /*
2898 * Validate configuration.
2899 */
2900 if (!CFGMR3AreValuesValid(pCfg, "IRQ\0DMA\0MemMapped\0IOBase\0"))
2901 return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2902
2903 /*
2904 * Read the configuration.
2905 */
2906 rc = CFGMR3QueryU8Def(pCfg, "IRQ", &irq_lvl, 6);
2907 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2908
2909 rc = CFGMR3QueryU8Def(pCfg, "DMA", &dma_chann, 2);
2910 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2911
2912 rc = CFGMR3QueryU16Def(pCfg, "IOBase", &io_base, 0x3f0);
2913 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2914
2915 rc = CFGMR3QueryBoolDef(pCfg, "MemMapped", &mem_mapped, false);
2916 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2917
2918 /*
2919 * Initialize data.
2920 */
2921 LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", irq_lvl, dma_chann, io_base));
2922 pThis->pDevIns = pDevIns;
2923 pThis->version = 0x90; /* Intel 82078 controller */
2924 pThis->irq_lvl = irq_lvl;
2925 pThis->dma_chann = dma_chann;
2926 pThis->io_base = io_base;
2927 pThis->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2928 pThis->num_floppies = MAX_FD;
2929
2930 /* Fill 'command_to_handler' lookup table */
2931 for (ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2932 for (j = 0; j < sizeof(command_to_handler); j++)
2933 if ((j & handlers[ii].mask) == handlers[ii].value)
2934 command_to_handler[j] = ii;
2935
2936 pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2937 pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2938
2939 for (i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2940 {
2941 fdrive_t *pDrv = &pThis->drives[i];
2942
2943 pDrv->drive = FDRIVE_DRV_NONE;
2944 pDrv->iLUN = i;
2945 pDrv->pDevIns = pDevIns;
2946
2947 pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2948 pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2949 pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2950 pDrv->IPort.pfnQueryDeviceLocation = fdQueryDeviceLocation;
2951 pDrv->Led.u32Magic = PDMLED_MAGIC;
2952 }
2953
2954 /*
2955 * Create the FDC timer.
2956 */
2957 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2958 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->result_timer);
2959 if (RT_FAILURE(rc))
2960 return rc;
2961
2962 /*
2963 * Register DMA channel.
2964 */
2965 if (pThis->dma_chann != 0xff)
2966 {
2967 rc = PDMDevHlpDMARegister(pDevIns, dma_chann, &fdctrl_transfer_handler, pThis);
2968 if (RT_FAILURE(rc))
2969 return rc;
2970 }
2971
2972 /*
2973 * IO / MMIO.
2974 */
2975 if (mem_mapped)
2976 {
2977 AssertMsgFailed(("Memory mapped floppy not support by now\n"));
2978 return VERR_NOT_SUPPORTED;
2979#if 0
2980 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
2981 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
2982 cpu_register_physical_memory(base, 0x08, io_mem);
2983#endif
2984 }
2985 else
2986 {
2987 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x1, 5, pThis,
2988 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#1");
2989 if (RT_FAILURE(rc))
2990 return rc;
2991
2992 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x7, 1, pThis,
2993 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#2");
2994 if (RT_FAILURE(rc))
2995 return rc;
2996 }
2997
2998 /*
2999 * Register the saved state data unit.
3000 */
3001 rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
3002 if (RT_FAILURE(rc))
3003 return rc;
3004
3005 /*
3006 * Attach the status port (optional).
3007 */
3008 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
3009 if (RT_SUCCESS (rc))
3010 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
3011 else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
3012 {
3013 AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
3014 return rc;
3015 }
3016
3017 /*
3018 * Initialize drives.
3019 */
3020 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
3021 {
3022 fdrive_t *pDrv = &pThis->drives[i];
3023 rc = fdConfig(pDrv, pDevIns, true /*fInit*/);
3024 if ( RT_FAILURE(rc)
3025 && rc != VERR_PDM_NO_ATTACHED_DRIVER)
3026 {
3027 AssertMsgFailed(("Configuration error: failed to configure drive %d, rc=%Rrc\n", i, rc));
3028 return rc;
3029 }
3030 }
3031
3032 fdctrl_reset(pThis, 0);
3033
3034 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
3035 fd_revalidate(&pThis->drives[i]);
3036
3037 return VINF_SUCCESS;
3038}
3039
3040
3041/**
3042 * The device registration structure.
3043 */
3044const PDMDEVREG g_DeviceFloppyController =
3045{
3046 /* u32Version */
3047 PDM_DEVREG_VERSION,
3048 /* szName */
3049 "i82078",
3050 /* szRCMod */
3051 "",
3052 /* szR0Mod */
3053 "",
3054 /* pszDescription */
3055 "Floppy drive controller (Intel 82078)",
3056 /* fFlags */
3057 PDM_DEVREG_FLAGS_DEFAULT_BITS,
3058 /* fClass */
3059 PDM_DEVREG_CLASS_STORAGE,
3060 /* cMaxInstances */
3061 1,
3062 /* cbInstance */
3063 sizeof(fdctrl_t),
3064 /* pfnConstruct */
3065 fdcConstruct,
3066 /* pfnDestruct */
3067 NULL,
3068 /* pfnRelocate */
3069 NULL,
3070 /* pfnMemSetup */
3071 NULL,
3072 /* pfnPowerOn */
3073 NULL,
3074 /* pfnReset */
3075 fdcReset,
3076 /* pfnSuspend */
3077 NULL,
3078 /* pfnResume */
3079 NULL,
3080 /* pfnAttach */
3081 fdcAttach,
3082 /* pfnDetach */
3083 fdcDetach,
3084 /* pfnQueryInterface. */
3085 NULL,
3086 /* pfnInitComplete */
3087 NULL,
3088 /* pfnPowerOff */
3089 NULL,
3090 /* pfnSoftReset */
3091 NULL,
3092 /* u32VersionEnd */
3093 PDM_DEVREG_VERSION
3094};
3095
3096#endif /* VBOX */
3097
3098/*
3099 * Local Variables:
3100 * mode: c
3101 * c-file-style: "k&r"
3102 * indent-tabs-mode: nil
3103 * End:
3104 */
3105
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