VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 81876

Last change on this file since 81876 was 81799, checked in by vboxsync, 5 years ago

DevFdc: Working on converting it to the new PDM device style. bugref:9218
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 101.0 KB
Line 
1/* $Id: DevFdc.cpp 81799 2019-11-12 12:47:35Z 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 <VBox/AssertGuest.h>
52#include <iprt/assert.h>
53#include <iprt/string.h>
54#include <iprt/uuid.h>
55
56#include "VBoxDD.h"
57
58#define FDC_SAVESTATE_CURRENT 2 /* The new and improved saved state. */
59#define FDC_SAVESTATE_OLD 1 /* The original saved state. */
60
61#define MAX_FD 2
62
63
64/********************************************************/
65/* debug Floppy devices */
66/* #define DEBUG_FLOPPY */
67
68#ifdef LOG_ENABLED
69# define FLOPPY_DPRINTF(...) Log(("floppy: " __VA_ARGS__))
70#else
71# define FLOPPY_DPRINTF(...) do { } while (0)
72#endif
73
74#define FLOPPY_ERROR RTLogPrintf
75
76typedef struct fdctrl_t fdctrl_t;
77
78/********************************************************/
79/* Floppy drive emulation */
80
81#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
82#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
83
84/* Will always be a fixed parameter for us */
85#define FD_SECTOR_LEN 512
86#define FD_SECTOR_SC 2 /* Sector size code */
87#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
88
89/* Floppy disk drive emulation */
90typedef enum fdrive_type_t {
91 FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
92 FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
93 FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
94 FDRIVE_DRV_NONE = 0x03, /* No drive connected */
95 FDRIVE_DRV_FAKE_15_6 = 0x0e, /* Fake 15.6 MB drive. */
96 FDRIVE_DRV_FAKE_63_5 = 0x0f /* Fake 63.5 MB drive. */
97} fdrive_type_t;
98
99typedef uint8_t fdrive_flags_t;
100#define FDISK_DBL_SIDES UINT8_C(0x01)
101
102typedef enum fdrive_rate_t {
103 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
104 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
105 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
106 FDRIVE_RATE_1M = 0x03 /* 1 Mbps */
107} fdrive_rate_t;
108
109/**
110 * The status for one drive.
111 *
112 * @implements PDMIBASE
113 * @implements PDMIMEDIAPORT
114 * @implements PDMIMOUNTNOTIFY
115 */
116typedef struct fdrive_t {
117 /** Pointer to the owning device instance. */
118 R3PTRTYPE(PPDMDEVINS) pDevIns;
119 /** Pointer to the attached driver's base interface. */
120 R3PTRTYPE(PPDMIBASE) pDrvBase;
121 /** Pointer to the attached driver's block interface. */
122 R3PTRTYPE(PPDMIMEDIA) pDrvMedia;
123 /** Pointer to the attached driver's mount interface.
124 * This is NULL if the driver isn't a removable unit. */
125 R3PTRTYPE(PPDMIMOUNT) pDrvMount;
126 /** The base interface. */
127 PDMIBASE IBase;
128 /** The block port interface. */
129 PDMIMEDIAPORT IPort;
130 /** The mount notify interface. */
131 PDMIMOUNTNOTIFY IMountNotify;
132 /** The LUN #. */
133 RTUINT iLUN;
134 /** The LED for this LUN. */
135 PDMLED Led;
136 /* Drive status */
137 fdrive_type_t drive;
138 uint8_t perpendicular; /* 2.88 MB access mode */
139 uint8_t dsk_chg; /* Disk change line */
140 /* Position */
141 uint8_t head;
142 uint8_t track;
143 uint8_t sect;
144 uint8_t ltrk; /* Logical track */
145 /* Media */
146 fdrive_flags_t flags;
147 uint8_t last_sect; /* Nb sector per track */
148 uint8_t max_track; /* Nb of tracks */
149 uint16_t bps; /* Bytes per sector */
150 uint8_t ro; /* Is read-only */
151 uint8_t media_rate; /* Data rate of medium */
152} fdrive_t;
153
154#define NUM_SIDES(drv) (drv->flags & FDISK_DBL_SIDES ? 2 : 1)
155
156static void fd_init(fdrive_t *drv, bool fInit)
157{
158 /* Drive */
159 if (fInit) {
160 /* Fixate the drive type at init time if possible. */
161 if (drv->pDrvMedia) {
162 PDMMEDIATYPE enmType = drv->pDrvMedia->pfnGetType(drv->pDrvMedia);
163 switch (enmType) {
164 case PDMMEDIATYPE_FLOPPY_360:
165 case PDMMEDIATYPE_FLOPPY_1_20:
166 drv->drive = FDRIVE_DRV_120;
167 break;
168 case PDMMEDIATYPE_FLOPPY_720:
169 case PDMMEDIATYPE_FLOPPY_1_44:
170 drv->drive = FDRIVE_DRV_144;
171 break;
172 default:
173 AssertFailed();
174 RT_FALL_THRU();
175 case PDMMEDIATYPE_FLOPPY_2_88:
176 drv->drive = FDRIVE_DRV_288;
177 break;
178 case PDMMEDIATYPE_FLOPPY_FAKE_15_6:
179 drv->drive = FDRIVE_DRV_FAKE_15_6;
180 break;
181 case PDMMEDIATYPE_FLOPPY_FAKE_63_5:
182 drv->drive = FDRIVE_DRV_FAKE_63_5;
183 break;
184 }
185 } else {
186 drv->drive = FDRIVE_DRV_NONE;
187 }
188 } /* else: The BIOS (and others) get the drive type via the CMOS, so
189 don't change it after the VM has been constructed. */
190 drv->perpendicular = 0;
191 /* Disk */
192 drv->last_sect = 0;
193 drv->max_track = 0;
194}
195
196static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
197 uint8_t last_sect, uint8_t num_sides)
198{
199 return (((track * num_sides) + head) * last_sect) + sect - 1; /* sect >= 1 */
200}
201
202/* Returns current position, in sectors, for given drive */
203static int fd_sector(fdrive_t *drv)
204{
205 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, NUM_SIDES(drv));
206}
207
208/* Seek to a new position:
209 * returns 0 if already on right track
210 * returns 1 if track changed
211 * returns 2 if track is invalid
212 * returns 3 if sector is invalid
213 * returns 4 if seek is disabled
214 * returns 5 if no media in drive
215 */
216static int fd_seek(fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
217 int enable_seek)
218{
219 int sector;
220 int ret;
221
222 if (!drv->last_sect) {
223 FLOPPY_DPRINTF("no disk in drive (max=%d %d %02x %02x)\n",
224 1, (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
225 drv->max_track, drv->last_sect);
226 return 5;
227 }
228 if (track > drv->max_track ||
229 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
230 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
231 head, track, sect, 1,
232 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
233 drv->max_track, drv->last_sect);
234 return 2;
235 }
236 if (sect > drv->last_sect || sect < 1) {
237 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
238 head, track, sect, 1,
239 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
240 drv->max_track, drv->last_sect);
241 return 3;
242 }
243 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
244 ret = 0;
245 if (sector != fd_sector(drv)) {
246#if 0
247 if (!enable_seek) {
248 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
249 head, track, sect, 1, drv->max_track, drv->last_sect);
250 return 4;
251 }
252#else
253 RT_NOREF(enable_seek);
254#endif
255 drv->head = head;
256 if (drv->track != track)
257 ret = 1;
258 drv->track = track;
259 drv->sect = sect;
260 }
261 drv->ltrk = drv->track;
262
263 return ret;
264}
265
266/* Set drive back to track 0 */
267static void fd_recalibrate(fdrive_t *drv)
268{
269 FLOPPY_DPRINTF("recalibrate\n");
270 drv->head = 0;
271 drv->track = 0;
272 drv->ltrk = 0;
273 drv->sect = 1;
274}
275
276/* Recognize floppy formats */
277typedef struct fd_format_t {
278 fdrive_type_t drive;
279 uint8_t last_sect; /**< Number of sectors. */
280 uint8_t max_track; /**< Number of tracks. */
281 uint8_t max_head; /**< Max head number. */
282 fdrive_rate_t rate;
283 const char *str;
284} fd_format_t;
285
286/* Note: Low-density disks (160K/180K/320K/360K) use 250 Kbps data rate
287 * in 40-track drives, but 300 Kbps in high-capacity 80-track drives.
288 */
289static fd_format_t fd_formats[] = {
290 /* First entry is default format */
291 /* 1.44 MB 3"1/2 floppy disks */
292 { FDRIVE_DRV_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
293 { FDRIVE_DRV_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
294 { FDRIVE_DRV_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
295 { FDRIVE_DRV_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
296 { FDRIVE_DRV_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
297 { FDRIVE_DRV_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
298 { FDRIVE_DRV_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
299 { FDRIVE_DRV_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
300 /* 2.88 MB 3"1/2 floppy disks */
301 { FDRIVE_DRV_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
302 { FDRIVE_DRV_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
303 { FDRIVE_DRV_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
304 { FDRIVE_DRV_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
305 { FDRIVE_DRV_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
306 /* 720 kB 3"1/2 floppy disks */
307 { FDRIVE_DRV_144, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
308 { FDRIVE_DRV_144, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
309 { FDRIVE_DRV_144, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
310 { FDRIVE_DRV_144, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
311 { FDRIVE_DRV_144, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
312 { FDRIVE_DRV_144, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
313 /* 1.2 MB 5"1/4 floppy disks */
314 { FDRIVE_DRV_120, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 5\"1/4", },
315 { FDRIVE_DRV_120, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 5\"1/4", }, /* CP Backup 5.25" HD */
316 { FDRIVE_DRV_120, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 5\"1/4", },
317 { FDRIVE_DRV_120, 18, 82, 1, FDRIVE_RATE_500K, "1.48 MB 5\"1/4", },
318 { FDRIVE_DRV_120, 18, 83, 1, FDRIVE_RATE_500K, "1.49 MB 5\"1/4", },
319 { FDRIVE_DRV_120, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 5\"1/4", },
320 /* 720 kB 5"1/4 floppy disks */
321 { FDRIVE_DRV_120, 9, 80, 1, FDRIVE_RATE_300K, "720 kB 5\"1/4", },
322 { FDRIVE_DRV_120, 11, 80, 1, FDRIVE_RATE_300K, "880 kB 5\"1/4", },
323 /* 360 kB 5"1/4 floppy disks (newer 9-sector formats) */
324 { FDRIVE_DRV_120, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 5\"1/4", },
325 { FDRIVE_DRV_120, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 5\"1/4", },
326 { FDRIVE_DRV_120, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 5\"1/4", }, /* CP Backup 5.25" DD */
327 { FDRIVE_DRV_120, 10, 41, 1, FDRIVE_RATE_300K, "410 kB 5\"1/4", },
328 { FDRIVE_DRV_120, 10, 42, 1, FDRIVE_RATE_300K, "420 kB 5\"1/4", },
329 /* 320 kB 5"1/4 floppy disks (old 8-sector formats) */
330 { FDRIVE_DRV_120, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 5\"1/4", },
331 { FDRIVE_DRV_120, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 5\"1/4", },
332 /* 1.2 MB and low density 3"1/2 floppy 'aliases' */
333 { FDRIVE_DRV_144, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 3\"1/2", },
334 { FDRIVE_DRV_144, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 3\"1/2", },
335 { FDRIVE_DRV_144, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 3\"1/2", }, /* CP Backup 5.25" DD */
336 { FDRIVE_DRV_144, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 3\"1/2", },
337 { FDRIVE_DRV_144, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 3\"1/2", },
338 { FDRIVE_DRV_144, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 3\"1/2", },
339 { FDRIVE_DRV_144, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 3\"1/2", },
340 /* For larger than real life floppy images (see DrvBlock.cpp). */
341 /* 15.6 MB fake floppy disk (just need something big). */
342 { FDRIVE_DRV_FAKE_15_6, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 15.6", },
343 { FDRIVE_DRV_FAKE_15_6, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 15.6", },
344 { FDRIVE_DRV_FAKE_15_6, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 15.6", },
345 { FDRIVE_DRV_FAKE_15_6, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 15.6", },
346 { FDRIVE_DRV_FAKE_15_6, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 15.6", },
347 { FDRIVE_DRV_FAKE_15_6, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 15.6", },
348 { FDRIVE_DRV_FAKE_15_6, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 15.6", },
349 { FDRIVE_DRV_FAKE_15_6, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 15.6", },
350 { FDRIVE_DRV_FAKE_15_6, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 15.6", },
351 { FDRIVE_DRV_FAKE_15_6, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 15.6", },
352 { FDRIVE_DRV_FAKE_15_6, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 15.6", },
353 { FDRIVE_DRV_FAKE_15_6, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 15.6", },
354 { FDRIVE_DRV_FAKE_15_6, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 15.6", },
355 { FDRIVE_DRV_FAKE_15_6, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 15.6", },
356 { FDRIVE_DRV_FAKE_15_6, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 15.6", },
357 { FDRIVE_DRV_FAKE_15_6, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 15.6", },
358 { FDRIVE_DRV_FAKE_15_6, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 15.6", },
359 { FDRIVE_DRV_FAKE_15_6, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 15.6", },
360 { FDRIVE_DRV_FAKE_15_6, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 15.6", },
361 { FDRIVE_DRV_FAKE_15_6, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 15.6", },
362 { FDRIVE_DRV_FAKE_15_6, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 15.6", },
363 /* 63.5 MB fake floppy disk (just need something big). */
364 { FDRIVE_DRV_FAKE_63_5, 255, 255, 1, FDRIVE_RATE_1M, "63.5 MB fake 63.5", },
365 { FDRIVE_DRV_FAKE_63_5, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 63.5", },
366 { FDRIVE_DRV_FAKE_63_5, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 63.5", },
367 { FDRIVE_DRV_FAKE_63_5, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 63.5", },
368 { FDRIVE_DRV_FAKE_63_5, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 63.5", },
369 { FDRIVE_DRV_FAKE_63_5, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 63.5", },
370 { FDRIVE_DRV_FAKE_63_5, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 63.5", },
371 { FDRIVE_DRV_FAKE_63_5, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 63.5", },
372 { FDRIVE_DRV_FAKE_63_5, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 63.5", },
373 { FDRIVE_DRV_FAKE_63_5, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 63.5", },
374 { FDRIVE_DRV_FAKE_63_5, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 63.5", },
375 { FDRIVE_DRV_FAKE_63_5, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 63.5", },
376 { FDRIVE_DRV_FAKE_63_5, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 63.5", },
377 { FDRIVE_DRV_FAKE_63_5, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 63.5", },
378 { FDRIVE_DRV_FAKE_63_5, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 63.5", },
379 { FDRIVE_DRV_FAKE_63_5, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 63.5", },
380 { FDRIVE_DRV_FAKE_63_5, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 63.5", },
381 { FDRIVE_DRV_FAKE_63_5, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 63.5", },
382 { FDRIVE_DRV_FAKE_63_5, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 63.5", },
383 { FDRIVE_DRV_FAKE_63_5, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 63.5", },
384 { FDRIVE_DRV_FAKE_63_5, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 63.5", },
385 { FDRIVE_DRV_FAKE_63_5, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 63.5", },
386 /* end */
387 { FDRIVE_DRV_NONE, (uint8_t)-1, (uint8_t)-1, 0, (fdrive_rate_t)0, NULL, },
388};
389
390/* Revalidate a disk drive after a disk change */
391static void fd_revalidate(fdrive_t *drv)
392{
393 const fd_format_t *parse;
394 uint64_t nb_sectors, size;
395 int i, first_match, match;
396 int nb_heads, max_track, last_sect, ro;
397
398 FLOPPY_DPRINTF("revalidate\n");
399 if ( drv->pDrvMedia
400 && drv->pDrvMount
401 && drv->pDrvMount->pfnIsMounted (drv->pDrvMount)) {
402 ro = drv->pDrvMedia->pfnIsReadOnly (drv->pDrvMedia);
403 nb_heads = max_track = last_sect = 0;
404 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
405 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
406 nb_heads - 1, max_track, last_sect);
407 } else {
408 uint64_t size2 = drv->pDrvMedia->pfnGetSize (drv->pDrvMedia);
409 nb_sectors = size2 / FD_SECTOR_LEN;
410 match = -1;
411 first_match = -1;
412 for (i = 0;; i++) {
413 parse = &fd_formats[i];
414 if (parse->drive == FDRIVE_DRV_NONE)
415 break;
416 if (drv->drive == parse->drive ||
417 drv->drive == FDRIVE_DRV_NONE) {
418 size = (parse->max_head + 1) * parse->max_track *
419 parse->last_sect;
420 if (nb_sectors == size) {
421 match = i;
422 break;
423 }
424 if (first_match == -1)
425 first_match = i;
426 }
427 }
428 if (match == -1) {
429 if (first_match == -1)
430 match = 1;
431 else
432 match = first_match;
433 parse = &fd_formats[match];
434 }
435 nb_heads = parse->max_head + 1;
436 max_track = parse->max_track;
437 last_sect = parse->last_sect;
438 drv->drive = parse->drive;
439 drv->media_rate = parse->rate;
440 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
441 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
442 LogRel(("FDC: %s floppy disk (%d h %d t %d s) %s\n", parse->str,
443 nb_heads, max_track, last_sect, ro ? "ro" : "rw"));
444 }
445 if (nb_heads == 1) {
446 drv->flags &= ~FDISK_DBL_SIDES;
447 } else {
448 drv->flags |= FDISK_DBL_SIDES;
449 }
450 drv->max_track = max_track;
451 drv->last_sect = last_sect;
452 drv->ro = ro;
453 } else {
454 FLOPPY_DPRINTF("No disk in drive\n");
455 drv->last_sect = 0;
456 drv->max_track = 0;
457 drv->flags &= ~FDISK_DBL_SIDES;
458 drv->dsk_chg = true; /* Disk change line active. */
459 }
460}
461
462/********************************************************/
463/* Intel 82078 floppy disk controller emulation */
464
465static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq);
466static void fdctrl_reset_fifo(fdctrl_t *fdctrl);
467static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0);
468static fdrive_t *get_cur_drv(fdctrl_t *fdctrl);
469
470static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl);
471static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl);
472static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl);
473static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value);
474static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl);
475static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value);
476static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl);
477static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value);
478static uint32_t fdctrl_read_data(fdctrl_t *fdctrl);
479static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value);
480static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl);
481static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value);
482
483enum {
484 FD_DIR_WRITE = 0,
485 FD_DIR_READ = 1,
486 FD_DIR_SCANE = 2,
487 FD_DIR_SCANL = 3,
488 FD_DIR_SCANH = 4,
489 FD_DIR_FORMAT = 5
490};
491
492enum {
493 FD_STATE_MULTI = 0x01, /* multi track flag */
494 FD_STATE_FORMAT = 0x02, /* format flag */
495 FD_STATE_SEEK = 0x04 /* seek flag */
496};
497
498enum {
499 FD_REG_SRA = 0x00,
500 FD_REG_SRB = 0x01,
501 FD_REG_DOR = 0x02,
502 FD_REG_TDR = 0x03,
503 FD_REG_MSR = 0x04,
504 FD_REG_DSR = 0x04,
505 FD_REG_FIFO = 0x05,
506 FD_REG_DIR = 0x07,
507 FD_REG_CCR = 0x07
508};
509
510enum {
511 FD_CMD_READ_TRACK = 0x02,
512 FD_CMD_SPECIFY = 0x03,
513 FD_CMD_SENSE_DRIVE_STATUS = 0x04,
514 FD_CMD_WRITE = 0x05,
515 FD_CMD_READ = 0x06,
516 FD_CMD_RECALIBRATE = 0x07,
517 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
518 FD_CMD_WRITE_DELETED = 0x09,
519 FD_CMD_READ_ID = 0x0a,
520 FD_CMD_READ_DELETED = 0x0c,
521 FD_CMD_FORMAT_TRACK = 0x0d,
522 FD_CMD_DUMPREG = 0x0e,
523 FD_CMD_SEEK = 0x0f,
524 FD_CMD_VERSION = 0x10,
525 FD_CMD_SCAN_EQUAL = 0x11,
526 FD_CMD_PERPENDICULAR_MODE = 0x12,
527 FD_CMD_CONFIGURE = 0x13,
528 FD_CMD_LOCK = 0x14,
529 FD_CMD_VERIFY = 0x16,
530 FD_CMD_POWERDOWN_MODE = 0x17,
531 FD_CMD_PART_ID = 0x18,
532 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
533 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
534 FD_CMD_SAVE = 0x2e,
535 FD_CMD_OPTION = 0x33,
536 FD_CMD_RESTORE = 0x4e,
537 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
538 FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
539 FD_CMD_FORMAT_AND_WRITE = 0xcd,
540 FD_CMD_RELATIVE_SEEK_IN = 0xcf
541};
542
543enum {
544 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
545 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
546 FD_CONFIG_POLL = 0x10, /* Poll enabled */
547 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
548 FD_CONFIG_EIS = 0x40 /* No implied seeks */
549};
550
551enum {
552 FD_SR0_EQPMT = 0x10,
553 FD_SR0_SEEK = 0x20,
554 FD_SR0_ABNTERM = 0x40,
555 FD_SR0_INVCMD = 0x80,
556 FD_SR0_RDYCHG = 0xc0
557};
558
559enum {
560 FD_SR1_MA = 0x01, /* Missing address mark */
561 FD_SR1_NW = 0x02, /* Not writable */
562 FD_SR1_ND = 0x04, /* No data */
563 FD_SR1_EC = 0x80 /* End of cylinder */
564};
565
566enum {
567 FD_SR2_MD = 0x01, /* Missing data address mark */
568 FD_SR2_SNS = 0x04, /* Scan not satisfied */
569 FD_SR2_SEH = 0x08 /* Scan equal hit */
570};
571
572enum {
573 FD_SRA_DIR = 0x01,
574 FD_SRA_nWP = 0x02,
575 FD_SRA_nINDX = 0x04,
576 FD_SRA_HDSEL = 0x08,
577 FD_SRA_nTRK0 = 0x10,
578 FD_SRA_STEP = 0x20,
579 FD_SRA_nDRV2 = 0x40,
580 FD_SRA_INTPEND = 0x80
581};
582
583enum {
584 FD_SRB_MTR0 = 0x01,
585 FD_SRB_MTR1 = 0x02,
586 FD_SRB_WGATE = 0x04,
587 FD_SRB_RDATA = 0x08,
588 FD_SRB_WDATA = 0x10,
589 FD_SRB_DR0 = 0x20
590};
591
592enum {
593#if MAX_FD == 4
594 FD_DOR_SELMASK = 0x03,
595#else
596 FD_DOR_SELMASK = 0x01,
597#endif
598 FD_DOR_nRESET = 0x04,
599 FD_DOR_DMAEN = 0x08,
600 FD_DOR_MOTEN0 = 0x10,
601 FD_DOR_MOTEN1 = 0x20,
602 FD_DOR_MOTEN2 = 0x40,
603 FD_DOR_MOTEN3 = 0x80
604};
605
606enum {
607#if MAX_FD == 4
608 FD_TDR_BOOTSEL = 0x0c
609#else
610 FD_TDR_BOOTSEL = 0x04
611#endif
612};
613
614enum {
615 FD_DSR_DRATEMASK= 0x03,
616 FD_DSR_PWRDOWN = 0x40,
617 FD_DSR_SWRESET = 0x80
618};
619
620enum {
621 FD_MSR_DRV0BUSY = 0x01,
622 FD_MSR_DRV1BUSY = 0x02,
623 FD_MSR_DRV2BUSY = 0x04,
624 FD_MSR_DRV3BUSY = 0x08,
625 FD_MSR_CMDBUSY = 0x10,
626 FD_MSR_NONDMA = 0x20,
627 FD_MSR_DIO = 0x40,
628 FD_MSR_RQM = 0x80
629};
630
631enum {
632 FD_DIR_DSKCHG = 0x80
633};
634
635#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
636#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
637#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
638
639/**
640 * Floppy controller state.
641 *
642 * @implements PDMILEDPORTS
643 */
644struct fdctrl_t {
645 /* Controller's identification */
646 uint8_t version;
647 /* HW */
648 uint8_t irq_lvl;
649 uint8_t dma_chann;
650 uint16_t io_base;
651 /* Controller state */
652 TMTIMERHANDLE hResultTimer;
653 uint8_t sra;
654 uint8_t srb;
655 uint8_t dor;
656 uint8_t tdr;
657 uint8_t dsr;
658 uint8_t msr;
659 uint8_t cur_drv;
660 uint8_t status0;
661 uint8_t status1;
662 uint8_t status2;
663 /* Command FIFO */
664 uint8_t fifo[FD_SECTOR_LEN];
665 uint32_t data_pos;
666 uint32_t data_len;
667 uint8_t data_state;
668 uint8_t data_dir;
669 uint8_t eot; /* last wanted sector */
670 /* States kept only to be returned back */
671 /* Timers state */
672 uint8_t timer0;
673 uint8_t timer1;
674 /* precompensation */
675 uint8_t precomp_trk;
676 uint8_t config;
677 uint8_t lock;
678 /* Power down config (also with status regB access mode */
679 uint8_t pwrd;
680 /* Floppy drives */
681 uint8_t num_floppies;
682 fdrive_t drives[MAX_FD];
683 uint8_t reset_sensei;
684 /** Pointer to device instance. */
685 PPDMDEVINS pDevIns;
686
687 /** Status LUN: The base interface. */
688 PDMIBASE IBaseStatus;
689 /** Status LUN: The Leds interface. */
690 PDMILEDPORTS ILeds;
691 /** Status LUN: The Partner of ILeds. */
692 PPDMILEDCONNECTORS pLedsConnector;
693
694 /** I/O ports: 0x3f1..0x3f5 */
695 IOMIOPORTHANDLE hIoPorts1;
696 /** I/O port: 0x3f7 */
697 IOMIOPORTHANDLE hIoPorts2;
698};
699
700static uint32_t fdctrl_read (fdctrl_t *fdctrl, uint32_t reg)
701{
702 uint32_t retval;
703
704 switch (reg) {
705 case FD_REG_SRA:
706 retval = fdctrl_read_statusA(fdctrl);
707 break;
708 case FD_REG_SRB:
709 retval = fdctrl_read_statusB(fdctrl);
710 break;
711 case FD_REG_DOR:
712 retval = fdctrl_read_dor(fdctrl);
713 break;
714 case FD_REG_TDR:
715 retval = fdctrl_read_tape(fdctrl);
716 break;
717 case FD_REG_MSR:
718 retval = fdctrl_read_main_status(fdctrl);
719 break;
720 case FD_REG_FIFO:
721 retval = fdctrl_read_data(fdctrl);
722 break;
723 case FD_REG_DIR:
724 retval = fdctrl_read_dir(fdctrl);
725 break;
726 default:
727 retval = UINT32_MAX;
728 break;
729 }
730 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
731
732 return retval;
733}
734
735static void fdctrl_write (fdctrl_t *fdctrl, uint32_t reg, uint32_t value)
736{
737 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
738
739 switch (reg) {
740 case FD_REG_DOR:
741 fdctrl_write_dor(fdctrl, value);
742 break;
743 case FD_REG_TDR:
744 fdctrl_write_tape(fdctrl, value);
745 break;
746 case FD_REG_DSR:
747 fdctrl_write_rate(fdctrl, value);
748 break;
749 case FD_REG_FIFO:
750 fdctrl_write_data(fdctrl, value);
751 break;
752 case FD_REG_CCR:
753 fdctrl_write_ccr(fdctrl, value);
754 break;
755 default:
756 break;
757 }
758}
759
760/* Change IRQ state */
761static void fdctrl_reset_irq(fdctrl_t *fdctrl)
762{
763 if (!(fdctrl->sra & FD_SRA_INTPEND))
764 return;
765 FLOPPY_DPRINTF("Reset interrupt\n");
766 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
767 fdctrl->sra &= ~FD_SRA_INTPEND;
768}
769
770static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
771{
772 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
773 FLOPPY_DPRINTF("Raising interrupt...\n");
774 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
775 fdctrl->sra |= FD_SRA_INTPEND;
776 }
777 if (status0 & FD_SR0_SEEK) {
778 fdrive_t *cur_drv;
779
780 /* A seek clears the disk change line (if a disk is inserted). */
781 cur_drv = get_cur_drv(fdctrl);
782 if (cur_drv->max_track)
783 cur_drv->dsk_chg = false;
784 }
785
786 fdctrl->reset_sensei = 0;
787 fdctrl->status0 = status0;
788 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
789}
790
791/* Reset controller */
792static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
793{
794 int i;
795
796 FLOPPY_DPRINTF("reset controller\n");
797 fdctrl_reset_irq(fdctrl);
798 /* Initialise controller */
799 fdctrl->sra = 0;
800 fdctrl->srb = 0xc0;
801 if (!fdctrl->drives[1].pDrvMedia)
802 fdctrl->sra |= FD_SRA_nDRV2;
803 fdctrl->cur_drv = 0;
804 fdctrl->dor = FD_DOR_nRESET;
805 fdctrl->dor |= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
806 fdctrl->msr = FD_MSR_RQM;
807 /* FIFO state */
808 fdctrl->data_pos = 0;
809 fdctrl->data_len = 0;
810 fdctrl->data_state = 0;
811 fdctrl->data_dir = FD_DIR_WRITE;
812 for (i = 0; i < MAX_FD; i++)
813 fd_recalibrate(&fdctrl->drives[i]);
814 fdctrl_reset_fifo(fdctrl);
815 if (do_irq) {
816 fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
817 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
818 }
819}
820
821static inline fdrive_t *drv0(fdctrl_t *fdctrl)
822{
823 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
824}
825
826static inline fdrive_t *drv1(fdctrl_t *fdctrl)
827{
828 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
829 return &fdctrl->drives[1];
830 else
831 return &fdctrl->drives[0];
832}
833
834#if MAX_FD == 4
835static inline fdrive_t *drv2(fdctrl_t *fdctrl)
836{
837 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
838 return &fdctrl->drives[2];
839 else
840 return &fdctrl->drives[1];
841}
842
843static inline fdrive_t *drv3(fdctrl_t *fdctrl)
844{
845 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
846 return &fdctrl->drives[3];
847 else
848 return &fdctrl->drives[2];
849}
850#endif
851
852static fdrive_t *get_cur_drv(fdctrl_t *fdctrl)
853{
854 switch (fdctrl->cur_drv) {
855 case 0: return drv0(fdctrl);
856 case 1: return drv1(fdctrl);
857#if MAX_FD == 4
858 case 2: return drv2(fdctrl);
859 case 3: return drv3(fdctrl);
860#endif
861 default: return NULL;
862 }
863}
864
865/* Status A register : 0x00 (read-only) */
866static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
867{
868 uint32_t retval = fdctrl->sra;
869
870 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
871
872 return retval;
873}
874
875/* Status B register : 0x01 (read-only) */
876static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
877{
878 uint32_t retval = fdctrl->srb;
879
880 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
881
882 return retval;
883}
884
885/* Digital output register : 0x02 */
886static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
887{
888 uint32_t retval = fdctrl->dor;
889
890 /* Selected drive */
891 retval |= fdctrl->cur_drv;
892 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
893
894 return retval;
895}
896
897static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
898{
899 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
900
901 /* Motors */
902 if (value & FD_DOR_MOTEN0)
903 fdctrl->srb |= FD_SRB_MTR0;
904 else
905 fdctrl->srb &= ~FD_SRB_MTR0;
906 if (value & FD_DOR_MOTEN1)
907 fdctrl->srb |= FD_SRB_MTR1;
908 else
909 fdctrl->srb &= ~FD_SRB_MTR1;
910
911 /* Drive */
912 if (value & 1)
913 fdctrl->srb |= FD_SRB_DR0;
914 else
915 fdctrl->srb &= ~FD_SRB_DR0;
916
917 /* Reset */
918 if (!(value & FD_DOR_nRESET)) {
919 if (fdctrl->dor & FD_DOR_nRESET) {
920 FLOPPY_DPRINTF("controller enter RESET state\n");
921 }
922 } else {
923 if (!(fdctrl->dor & FD_DOR_nRESET)) {
924 FLOPPY_DPRINTF("controller out of RESET state\n");
925 fdctrl_reset(fdctrl, 1);
926 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
927 }
928 }
929 /* Selected drive */
930 fdctrl->cur_drv = value & FD_DOR_SELMASK;
931
932 fdctrl->dor = value;
933}
934
935/* Tape drive register : 0x03 */
936static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
937{
938 uint32_t retval = fdctrl->tdr;
939
940 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
941
942 return retval;
943}
944
945static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
946{
947 /* Reset mode */
948 if (!(fdctrl->dor & FD_DOR_nRESET)) {
949 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
950 return;
951 }
952 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
953 /* Disk boot selection indicator */
954 fdctrl->tdr = value & FD_TDR_BOOTSEL;
955 /* Tape indicators: never allow */
956}
957
958/* Main status register : 0x04 (read) */
959static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
960{
961 uint32_t retval = fdctrl->msr;
962
963 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
964 fdctrl->dor |= FD_DOR_nRESET;
965
966 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
967
968 return retval;
969}
970
971/* Data select rate register : 0x04 (write) */
972static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
973{
974 /* Reset mode */
975 if (!(fdctrl->dor & FD_DOR_nRESET)) {
976 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
977 return;
978 }
979 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
980 /* Reset: autoclear */
981 if (value & FD_DSR_SWRESET) {
982 fdctrl->dor &= ~FD_DOR_nRESET;
983 fdctrl_reset(fdctrl, 1);
984 fdctrl->dor |= FD_DOR_nRESET;
985 }
986 if (value & FD_DSR_PWRDOWN) {
987 fdctrl_reset(fdctrl, 1);
988 }
989 fdctrl->dsr = value;
990}
991
992/* Configuration control register : 0x07 (write) */
993static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
994{
995 /* Reset mode */
996 if (!(fdctrl->dor & FD_DOR_nRESET)) {
997 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
998 return;
999 }
1000 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1001
1002 /* Only the rate selection bits used in AT mode, and we
1003 * store those in the DSR.
1004 */
1005 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | (value & FD_DSR_DRATEMASK);
1006}
1007
1008static int fdctrl_media_changed(fdrive_t *drv)
1009{
1010 return drv->dsk_chg;
1011}
1012
1013/* Digital input register : 0x07 (read-only) */
1014static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1015{
1016 uint32_t retval = 0;
1017
1018 /* The change line signal is reported by the currently selected
1019 * drive. If the corresponding motor on bit is not set, the drive
1020 * is *not* selected!
1021 */
1022 if (fdctrl_media_changed(get_cur_drv(fdctrl))
1023 && (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1024 retval |= FD_DIR_DSKCHG;
1025 if (retval != 0)
1026 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1027
1028 return retval;
1029}
1030
1031/* FIFO state control */
1032static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1033{
1034 fdctrl->data_dir = FD_DIR_WRITE;
1035 fdctrl->data_pos = 0;
1036 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1037}
1038
1039/* Set FIFO status for the host to read */
1040static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1041{
1042 fdctrl->data_dir = FD_DIR_READ;
1043 fdctrl->data_len = fifo_len;
1044 fdctrl->data_pos = 0;
1045 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1046 if (do_irq)
1047 fdctrl_raise_irq(fdctrl, 0x00);
1048}
1049
1050/* Set an error: unimplemented/unknown command */
1051static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1052{
1053 RT_NOREF(direction);
1054 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1055 fdctrl->fifo[0] = FD_SR0_INVCMD;
1056 fdctrl_set_fifo(fdctrl, 1, 0);
1057}
1058
1059/* Seek to next sector */
1060static int fdctrl_seek_to_next_sect(fdctrl_t *fdctrl, fdrive_t *cur_drv)
1061{
1062 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1063 cur_drv->head, cur_drv->track, cur_drv->sect,
1064 fd_sector(cur_drv));
1065 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1066 error in fact */
1067 if (cur_drv->sect >= cur_drv->last_sect ||
1068 cur_drv->sect == fdctrl->eot) {
1069 cur_drv->sect = 1;
1070 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1071 if (cur_drv->head == 0 &&
1072 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1073 cur_drv->head = 1;
1074 } else {
1075 cur_drv->head = 0;
1076 cur_drv->ltrk++;
1077 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1078 return 0;
1079 }
1080 } else {
1081 cur_drv->ltrk++;
1082 return 0;
1083 }
1084 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1085 cur_drv->head, cur_drv->track,
1086 cur_drv->sect, fd_sector(cur_drv));
1087 } else {
1088 cur_drv->sect++;
1089 }
1090 return 1;
1091}
1092
1093/* Callback for transfer end (stop or abort) */
1094static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1095 uint8_t status1, uint8_t status2)
1096{
1097 fdrive_t *cur_drv;
1098
1099 cur_drv = get_cur_drv(fdctrl);
1100 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1101 status0, status1, status2,
1102 status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1103 fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1104 fdctrl->fifo[1] = status1;
1105 fdctrl->fifo[2] = status2;
1106 fdctrl->fifo[3] = cur_drv->ltrk;
1107 fdctrl->fifo[4] = cur_drv->head;
1108 fdctrl->fifo[5] = cur_drv->sect;
1109 fdctrl->fifo[6] = FD_SECTOR_SC;
1110 FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1111 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1112 fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1113
1114 fdctrl->data_dir = FD_DIR_READ;
1115 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1116 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1117 }
1118 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1119 fdctrl->msr &= ~FD_MSR_NONDMA;
1120 fdctrl_set_fifo(fdctrl, 7, 1);
1121}
1122
1123/* Prepare a data transfer (either DMA or FIFO) */
1124static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1125{
1126 fdrive_t *cur_drv;
1127 uint8_t kh, kt, ks;
1128 int did_seek = 0;
1129
1130 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1131 cur_drv = get_cur_drv(fdctrl);
1132 kt = fdctrl->fifo[2];
1133 kh = fdctrl->fifo[3];
1134 ks = fdctrl->fifo[4];
1135 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1136 GET_CUR_DRV(fdctrl), kh, kt, ks,
1137 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1138 FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1139 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1140 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1141 fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1142 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1143 case 2:
1144 /* sect too big */
1145 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1146 fdctrl->fifo[3] = kt;
1147 fdctrl->fifo[4] = kh;
1148 fdctrl->fifo[5] = ks;
1149 return;
1150 case 3:
1151 /* track too big */
1152 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1153 fdctrl->fifo[3] = kt;
1154 fdctrl->fifo[4] = kh;
1155 fdctrl->fifo[5] = ks;
1156 return;
1157 case 4:
1158 /* No seek enabled */
1159 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1160 fdctrl->fifo[3] = kt;
1161 fdctrl->fifo[4] = kh;
1162 fdctrl->fifo[5] = ks;
1163 return;
1164 case 5:
1165 /* No disk in drive */
1166 /// @todo This is wrong! Command should not complete.
1167 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | 0x08, /*FD_SR1_MA |*/ FD_SR1_ND, 0x00);
1168 fdctrl->fifo[3] = kt;
1169 fdctrl->fifo[4] = kh;
1170 fdctrl->fifo[5] = ks;
1171 return;
1172 case 1:
1173 did_seek = 1;
1174 break;
1175 default:
1176 break;
1177 }
1178 /* Check the data rate. If the programmed data rate does not match
1179 * the currently inserted medium, the operation has to fail.
1180 */
1181 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1182 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1183 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1184 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1185 fdctrl->fifo[3] = kt;
1186 fdctrl->fifo[4] = kh;
1187 fdctrl->fifo[5] = ks;
1188 return;
1189 }
1190 /* Set the FIFO state */
1191 fdctrl->data_dir = direction;
1192 fdctrl->data_pos = 0;
1193 fdctrl->msr |= FD_MSR_CMDBUSY;
1194 if (fdctrl->fifo[0] & 0x80)
1195 fdctrl->data_state |= FD_STATE_MULTI;
1196 else
1197 fdctrl->data_state &= ~FD_STATE_MULTI;
1198 if (did_seek)
1199 fdctrl->data_state |= FD_STATE_SEEK;
1200 else
1201 fdctrl->data_state &= ~FD_STATE_SEEK;
1202 if (fdctrl->fifo[5] == 00) {
1203 fdctrl->data_len = fdctrl->fifo[8];
1204 } else {
1205 int tmp;
1206 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1207 tmp = (fdctrl->fifo[6] - ks + 1);
1208 if (fdctrl->fifo[0] & 0x80)
1209 tmp += fdctrl->fifo[6];
1210 fdctrl->data_len *= tmp;
1211 }
1212 fdctrl->eot = fdctrl->fifo[6];
1213 if (fdctrl->dor & FD_DOR_DMAEN) {
1214 int dma_mode;
1215 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1216 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1217 dma_mode = (dma_mode >> 2) & 3;
1218 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1219 dma_mode, direction,
1220 (128 << fdctrl->fifo[5]) *
1221 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1222 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1223 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1224 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1225 (direction == FD_DIR_READ && (dma_mode == 1 || dma_mode == 0))) {
1226 /* No access is allowed until DMA transfer has completed */
1227 fdctrl->msr &= ~FD_MSR_RQM;
1228 /* Now, we just have to wait for the DMA controller to
1229 * recall us...
1230 */
1231 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1232 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1233 return;
1234 } else {
1235 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1236 }
1237 }
1238 FLOPPY_DPRINTF("start non-DMA transfer\n");
1239 fdctrl->msr |= FD_MSR_NONDMA;
1240 if (direction != FD_DIR_WRITE)
1241 fdctrl->msr |= FD_MSR_DIO;
1242 /* IO based transfer: calculate len */
1243 fdctrl_raise_irq(fdctrl, 0x00);
1244
1245 return;
1246}
1247
1248/* Prepare a format data transfer (either DMA or FIFO) */
1249static void fdctrl_start_format(fdctrl_t *fdctrl)
1250{
1251 fdrive_t *cur_drv;
1252 uint8_t ns, dp, kh, kt, ks;
1253
1254 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1255 cur_drv = get_cur_drv(fdctrl);
1256 kt = cur_drv->track;
1257 kh = (fdctrl->fifo[1] & 0x04) >> 2;
1258 ns = fdctrl->fifo[3];
1259 dp = fdctrl->fifo[5];
1260 ks = 1;
1261 FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1262 GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1263 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1264 switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1265 case 2:
1266 /* sect too big */
1267 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1268 fdctrl->fifo[3] = kt;
1269 fdctrl->fifo[4] = kh;
1270 fdctrl->fifo[5] = ks;
1271 return;
1272 case 3:
1273 /* track too big */
1274 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1275 fdctrl->fifo[3] = kt;
1276 fdctrl->fifo[4] = kh;
1277 fdctrl->fifo[5] = ks;
1278 return;
1279 case 4:
1280 /* No seek enabled */
1281 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1282 fdctrl->fifo[3] = kt;
1283 fdctrl->fifo[4] = kh;
1284 fdctrl->fifo[5] = ks;
1285 return;
1286 case 5:
1287 /* No disk in drive */
1288 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1289 fdctrl->fifo[3] = kt;
1290 fdctrl->fifo[4] = kh;
1291 fdctrl->fifo[5] = ks;
1292 return;
1293 case 1:
1294 break;
1295 default:
1296 break;
1297 }
1298 /* It's not clear what should happen if the data rate does not match. */
1299#if 0
1300 /* Check the data rate. If the programmed data rate does not match
1301 * the currently inserted medium, the operation has to fail.
1302 */
1303 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1304 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1305 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1306 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1307 fdctrl->fifo[3] = kt;
1308 fdctrl->fifo[4] = kh;
1309 fdctrl->fifo[5] = ks;
1310 return;
1311 }
1312#endif
1313 /* Set the FIFO state */
1314 fdctrl->data_dir = FD_DIR_FORMAT;
1315 fdctrl->data_pos = 0;
1316 fdctrl->msr |= FD_MSR_CMDBUSY;
1317 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1318 fdctrl->data_len = ns * 4;
1319 fdctrl->eot = ns;
1320 if (fdctrl->dor & FD_DOR_DMAEN) {
1321 int dma_mode;
1322 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1323 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1324 dma_mode = (dma_mode >> 2) & 3;
1325 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1326 dma_mode, fdctrl->data_dir,
1327 (128 << fdctrl->fifo[2]) *
1328 (cur_drv->last_sect + 1), fdctrl->data_len);
1329 if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1330 /* No access is allowed until DMA transfer has completed */
1331 fdctrl->msr &= ~FD_MSR_RQM;
1332 /* Now, we just have to wait for the DMA controller to
1333 * recall us...
1334 */
1335 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1336 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1337 return;
1338 } else {
1339 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1340 }
1341 }
1342 FLOPPY_DPRINTF("start non-DMA format\n");
1343 fdctrl->msr |= FD_MSR_NONDMA;
1344 /* IO based transfer: calculate len */
1345 fdctrl_raise_irq(fdctrl, 0x00);
1346
1347 return;
1348}
1349
1350/* Prepare a transfer of deleted data */
1351static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1352{
1353 RT_NOREF(direction);
1354 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1355
1356 /* We don't handle deleted data,
1357 * so we don't return *ANYTHING*
1358 */
1359 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1360}
1361
1362/* Block driver read/write wrappers. */
1363
1364static int blk_write(fdrive_t *drv, int64_t sector_num, const uint8_t *buf, int nb_sectors)
1365{
1366 int rc;
1367
1368 drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1369
1370 rc = drv->pDrvMedia->pfnWrite(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1371 buf, nb_sectors * FD_SECTOR_LEN);
1372
1373 drv->Led.Actual.s.fWriting = 0;
1374 if (RT_FAILURE(rc))
1375 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1376
1377 return rc;
1378}
1379
1380static int blk_read(fdrive_t *drv, int64_t sector_num, uint8_t *buf, int nb_sectors)
1381{
1382 int rc;
1383
1384 drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1385
1386 rc = drv->pDrvMedia->pfnRead(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1387 buf, nb_sectors * FD_SECTOR_LEN);
1388
1389 drv->Led.Actual.s.fReading = 0;
1390
1391 if (RT_FAILURE(rc))
1392 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1393
1394 return rc;
1395}
1396
1397/**
1398 * @callback_method_impl{FNDMATRANSFERHANDLER, handlers for DMA transfers}
1399 */
1400static DECLCALLBACK(uint32_t) fdctrl_transfer_handler(PPDMDEVINS pDevIns, void *pvUser,
1401 unsigned uChannel, uint32_t off, uint32_t cb)
1402{
1403 RT_NOREF(pDevIns, off);
1404 fdctrl_t *fdctrl;
1405 fdrive_t *cur_drv;
1406 int rc;
1407 uint32_t len = 0;
1408 uint32_t start_pos, rel_pos;
1409 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1410
1411 fdctrl = (fdctrl_t *)pvUser;
1412 if (fdctrl->msr & FD_MSR_RQM) {
1413 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1414 return 0;
1415 }
1416 cur_drv = get_cur_drv(fdctrl);
1417 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1418 fdctrl->data_dir == FD_DIR_SCANH)
1419 status2 = FD_SR2_SNS;
1420 if (cb > fdctrl->data_len)
1421 cb = fdctrl->data_len;
1422 if (cur_drv->pDrvMedia == NULL)
1423 {
1424 if (fdctrl->data_dir == FD_DIR_WRITE)
1425 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1426 else
1427 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1428 Assert(len == 0);
1429 goto transfer_error;
1430 }
1431
1432 if (cur_drv->ro)
1433 {
1434 if (fdctrl->data_dir == FD_DIR_WRITE || fdctrl->data_dir == FD_DIR_FORMAT)
1435 {
1436 /* Handle readonly medium early, no need to do DMA, touch the
1437 * LED or attempt any writes. A real floppy doesn't attempt
1438 * to write to readonly media either. */
1439 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1440 0x00);
1441 Assert(len == 0);
1442 goto transfer_error;
1443 }
1444 }
1445
1446 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1447 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < cb;) {
1448 len = cb - fdctrl->data_pos;
1449 if (len + rel_pos > FD_SECTOR_LEN)
1450 len = FD_SECTOR_LEN - rel_pos;
1451 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x (%d-0x%08x 0x%08x)\n",
1452 len, cb, fdctrl->data_pos, fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1453 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), fd_sector(cur_drv) * FD_SECTOR_LEN);
1454 if (fdctrl->data_dir != FD_DIR_FORMAT &&
1455 (fdctrl->data_dir != FD_DIR_WRITE ||
1456 len < FD_SECTOR_LEN || rel_pos != 0)) {
1457 /* READ & SCAN commands and realign to a sector for WRITE */
1458 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1459 if (RT_FAILURE(rc))
1460 {
1461 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1462 fd_sector(cur_drv));
1463 /* Sure, image size is too small... */
1464 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1465 }
1466 }
1467 switch (fdctrl->data_dir) {
1468 case FD_DIR_READ:
1469 /* READ commands */
1470 {
1471 uint32_t read;
1472 int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, uChannel,
1473 fdctrl->fifo + rel_pos,
1474 fdctrl->data_pos,
1475 len, &read);
1476 AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1477 }
1478 break;
1479 case FD_DIR_WRITE:
1480 /* WRITE commands */
1481 {
1482 uint32_t written;
1483 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel,
1484 fdctrl->fifo + rel_pos,
1485 fdctrl->data_pos,
1486 len, &written);
1487 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1488 }
1489
1490 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1491 if (RT_FAILURE(rc))
1492 {
1493 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1494 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1495 goto transfer_error;
1496 }
1497 break;
1498 case FD_DIR_FORMAT:
1499 /* FORMAT command */
1500 {
1501 uint8_t eot = fdctrl->fifo[3];
1502 uint8_t filler = fdctrl->fifo[5];
1503 uint32_t written;
1504 int sct;
1505 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel,
1506 fdctrl->fifo + rel_pos,
1507 fdctrl->data_pos,
1508 len, &written);
1509 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1510
1511 /* Fill the entire track with desired data pattern. */
1512 FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1513 eot, filler);
1514 memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1515 for (sct = 0; sct < eot; ++sct)
1516 {
1517 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1518 if (RT_FAILURE(rc))
1519 {
1520 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1521 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1522 goto transfer_error;
1523 }
1524 fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1525 }
1526 }
1527 break;
1528 default:
1529 /* SCAN commands */
1530 {
1531 uint8_t tmpbuf[FD_SECTOR_LEN];
1532 int ret;
1533 uint32_t read;
1534 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel, tmpbuf,
1535 fdctrl->data_pos, len, &read);
1536 AssertMsg(RT_SUCCESS(rc2), ("DMAReadMemory -> %Rrc2\n", rc2)); NOREF(rc2);
1537 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1538 if (ret == 0) {
1539 status2 = FD_SR2_SEH;
1540 goto end_transfer;
1541 }
1542 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1543 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1544 status2 = 0x00;
1545 goto end_transfer;
1546 }
1547 }
1548 break;
1549 }
1550 fdctrl->data_pos += len;
1551 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1552 if (rel_pos == 0) {
1553 /* Seek to next sector */
1554 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1555 break;
1556 }
1557 }
1558end_transfer:
1559 len = fdctrl->data_pos - start_pos;
1560 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1561 fdctrl->data_pos, len, fdctrl->data_len);
1562 if (fdctrl->data_dir == FD_DIR_SCANE ||
1563 fdctrl->data_dir == FD_DIR_SCANL ||
1564 fdctrl->data_dir == FD_DIR_SCANH)
1565 status2 = FD_SR2_SEH;
1566 if (FD_DID_SEEK(fdctrl->data_state))
1567 status0 |= FD_SR0_SEEK;
1568 fdctrl->data_len -= len;
1569 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1570transfer_error:
1571
1572 return len;
1573}
1574
1575/* Data register : 0x05 */
1576static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1577{
1578 fdrive_t *cur_drv;
1579 uint32_t retval = 0;
1580 unsigned pos;
1581 int rc;
1582
1583 cur_drv = get_cur_drv(fdctrl);
1584 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1585 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1586 FLOPPY_ERROR("controller not ready for reading\n");
1587 return 0;
1588 }
1589 pos = fdctrl->data_pos % FD_SECTOR_LEN;
1590 if (fdctrl->msr & FD_MSR_NONDMA) {
1591 if (pos == 0) {
1592 if (fdctrl->data_pos != 0)
1593 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1594 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1595 fd_sector(cur_drv));
1596 return 0;
1597 }
1598 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1599 if (RT_FAILURE(rc))
1600 {
1601 FLOPPY_DPRINTF("error getting sector %d\n",
1602 fd_sector(cur_drv));
1603 /* Sure, image size is too small... */
1604 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1605 }
1606 }
1607 }
1608 retval = fdctrl->fifo[pos];
1609 if (++fdctrl->data_pos == fdctrl->data_len) {
1610 fdctrl->data_pos = 0;
1611 /* Switch from transfer mode to status mode
1612 * then from status mode to command mode
1613 */
1614 if (fdctrl->msr & FD_MSR_NONDMA) {
1615 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1616 } else {
1617 fdctrl_reset_fifo(fdctrl);
1618 fdctrl_reset_irq(fdctrl);
1619 }
1620 }
1621 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1622
1623 return retval;
1624}
1625
1626static void fdctrl_format_sector(fdctrl_t *fdctrl)
1627{
1628 fdrive_t *cur_drv;
1629 uint8_t kh, kt, ks;
1630 int ok = 0, rc;
1631
1632 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1633 cur_drv = get_cur_drv(fdctrl);
1634 kt = fdctrl->fifo[6];
1635 kh = fdctrl->fifo[7];
1636 ks = fdctrl->fifo[8];
1637 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1638 GET_CUR_DRV(fdctrl), kh, kt, ks,
1639 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1640 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1641 case 2:
1642 /* sect too big */
1643 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1644 fdctrl->fifo[3] = kt;
1645 fdctrl->fifo[4] = kh;
1646 fdctrl->fifo[5] = ks;
1647 return;
1648 case 3:
1649 /* track too big */
1650 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1651 fdctrl->fifo[3] = kt;
1652 fdctrl->fifo[4] = kh;
1653 fdctrl->fifo[5] = ks;
1654 return;
1655 case 4:
1656 /* No seek enabled */
1657 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1658 fdctrl->fifo[3] = kt;
1659 fdctrl->fifo[4] = kh;
1660 fdctrl->fifo[5] = ks;
1661 return;
1662 case 5:
1663 /* No disk in drive */
1664 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1665 fdctrl->fifo[3] = kt;
1666 fdctrl->fifo[4] = kh;
1667 fdctrl->fifo[5] = ks;
1668 return;
1669 case 1:
1670 fdctrl->data_state |= FD_STATE_SEEK;
1671 break;
1672 default:
1673 break;
1674 }
1675 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1676 if (cur_drv->pDrvMedia) {
1677 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1678 if (RT_FAILURE (rc)) {
1679 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1680 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1681 } else {
1682 ok = 1;
1683 }
1684 }
1685 if (ok) {
1686 if (cur_drv->sect == cur_drv->last_sect) {
1687 fdctrl->data_state &= ~FD_STATE_FORMAT;
1688 /* Last sector done */
1689 if (FD_DID_SEEK(fdctrl->data_state))
1690 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1691 else
1692 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1693 } else {
1694 /* More to do */
1695 fdctrl->data_pos = 0;
1696 fdctrl->data_len = 4;
1697 }
1698 }
1699}
1700
1701static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1702{
1703 RT_NOREF(direction);
1704 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1705 fdctrl->fifo[0] = fdctrl->lock << 4;
1706 fdctrl_set_fifo(fdctrl, 1, 0);
1707}
1708
1709static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1710{
1711 RT_NOREF(direction);
1712 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1713
1714 /* Drives position */
1715 fdctrl->fifo[0] = drv0(fdctrl)->track;
1716 fdctrl->fifo[1] = drv1(fdctrl)->track;
1717#if MAX_FD == 4
1718 fdctrl->fifo[2] = drv2(fdctrl)->track;
1719 fdctrl->fifo[3] = drv3(fdctrl)->track;
1720#else
1721 fdctrl->fifo[2] = 0;
1722 fdctrl->fifo[3] = 0;
1723#endif
1724 /* timers */
1725 fdctrl->fifo[4] = fdctrl->timer0;
1726 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1727 fdctrl->fifo[6] = cur_drv->last_sect;
1728 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1729 (cur_drv->perpendicular << 2);
1730 fdctrl->fifo[8] = fdctrl->config;
1731 fdctrl->fifo[9] = fdctrl->precomp_trk;
1732 fdctrl_set_fifo(fdctrl, 10, 0);
1733}
1734
1735static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1736{
1737 RT_NOREF(direction);
1738 /* Controller's version */
1739 fdctrl->fifo[0] = fdctrl->version;
1740 fdctrl_set_fifo(fdctrl, 1, 0);
1741}
1742
1743static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1744{
1745 RT_NOREF(direction);
1746 fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1747 fdctrl_set_fifo(fdctrl, 1, 0);
1748}
1749
1750static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1751{
1752 RT_NOREF(direction);
1753 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1754
1755 /* Drives position */
1756 drv0(fdctrl)->track = fdctrl->fifo[3];
1757 drv1(fdctrl)->track = fdctrl->fifo[4];
1758#if MAX_FD == 4
1759 drv2(fdctrl)->track = fdctrl->fifo[5];
1760 drv3(fdctrl)->track = fdctrl->fifo[6];
1761#endif
1762 /* timers */
1763 fdctrl->timer0 = fdctrl->fifo[7];
1764 fdctrl->timer1 = fdctrl->fifo[8];
1765 cur_drv->last_sect = fdctrl->fifo[9];
1766 fdctrl->lock = fdctrl->fifo[10] >> 7;
1767 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1768 fdctrl->config = fdctrl->fifo[11];
1769 fdctrl->precomp_trk = fdctrl->fifo[12];
1770 fdctrl->pwrd = fdctrl->fifo[13];
1771 fdctrl_reset_fifo(fdctrl);
1772}
1773
1774static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1775{
1776 RT_NOREF(direction);
1777 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1778
1779 fdctrl->fifo[0] = 0;
1780 fdctrl->fifo[1] = 0;
1781 /* Drives position */
1782 fdctrl->fifo[2] = drv0(fdctrl)->track;
1783 fdctrl->fifo[3] = drv1(fdctrl)->track;
1784#if MAX_FD == 4
1785 fdctrl->fifo[4] = drv2(fdctrl)->track;
1786 fdctrl->fifo[5] = drv3(fdctrl)->track;
1787#else
1788 fdctrl->fifo[4] = 0;
1789 fdctrl->fifo[5] = 0;
1790#endif
1791 /* timers */
1792 fdctrl->fifo[6] = fdctrl->timer0;
1793 fdctrl->fifo[7] = fdctrl->timer1;
1794 fdctrl->fifo[8] = cur_drv->last_sect;
1795 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1796 (cur_drv->perpendicular << 2);
1797 fdctrl->fifo[10] = fdctrl->config;
1798 fdctrl->fifo[11] = fdctrl->precomp_trk;
1799 fdctrl->fifo[12] = fdctrl->pwrd;
1800 fdctrl->fifo[13] = 0;
1801 fdctrl->fifo[14] = 0;
1802 fdctrl_set_fifo(fdctrl, 15, 0);
1803}
1804
1805static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1806{
1807 RT_NOREF(direction);
1808 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1809
1810 FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1811
1812 fdctrl->msr &= ~FD_MSR_RQM;
1813 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1814 PDMDevHlpTimerSetMillies(fdctrl->pDevIns, fdctrl->hResultTimer, 1000 / 50);
1815}
1816
1817static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
1818{
1819 RT_NOREF(direction);
1820 fdrive_t *cur_drv;
1821 uint8_t ns, dp;
1822
1823 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1824 cur_drv = get_cur_drv(fdctrl);
1825 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1826 ns = fdctrl->fifo[3];
1827 dp = fdctrl->fifo[5];
1828
1829 FLOPPY_DPRINTF("Format track %d at %d, %d sectors, filler %02x\n",
1830 cur_drv->track, GET_CUR_DRV(fdctrl), ns, dp);
1831 FLOPPY_DPRINTF("CMD:%02x SEL:%02x N:%02x SC:%02x GPL:%02x D:%02x\n",
1832 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1833 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5]);
1834
1835 /* Since we cannot actually format anything, we have to make sure that
1836 * whatever new format the guest is trying to establish matches the
1837 * existing format of the medium.
1838 */
1839 if (cur_drv->last_sect != ns || fdctrl->fifo[2] != 2)
1840 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_NW, 0);
1841 else
1842 {
1843 cur_drv->bps = fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1844 cur_drv->last_sect = ns;
1845
1846 fdctrl_start_format(fdctrl);
1847 }
1848}
1849
1850static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
1851{
1852 RT_NOREF(direction);
1853 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1854 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1855 if (fdctrl->fifo[2] & 1)
1856 fdctrl->dor &= ~FD_DOR_DMAEN;
1857 else
1858 fdctrl->dor |= FD_DOR_DMAEN;
1859 /* No result back */
1860 fdctrl_reset_fifo(fdctrl);
1861}
1862
1863static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
1864{
1865 RT_NOREF(direction);
1866 fdrive_t *cur_drv;
1867
1868 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1869 cur_drv = get_cur_drv(fdctrl);
1870 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1871 /* 1 Byte status back */
1872 fdctrl->fifo[0] = (cur_drv->ro << 6) |
1873 (cur_drv->track == 0 ? 0x10 : 0x00) |
1874 (cur_drv->head << 2) |
1875 GET_CUR_DRV(fdctrl) |
1876 0x28;
1877 fdctrl_set_fifo(fdctrl, 1, 0);
1878}
1879
1880static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
1881{
1882 RT_NOREF(direction);
1883 fdrive_t *cur_drv;
1884 uint8_t st0;
1885
1886 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1887 cur_drv = get_cur_drv(fdctrl);
1888 fd_recalibrate(cur_drv);
1889 fdctrl_reset_fifo(fdctrl);
1890 st0 = FD_SR0_SEEK | GET_CUR_DRV(fdctrl);
1891 /* No drive means no TRK0 signal. */
1892 if (cur_drv->drive == FDRIVE_DRV_NONE)
1893 st0 |= FD_SR0_ABNTERM | FD_SR0_EQPMT;
1894 /* Raise Interrupt */
1895 fdctrl_raise_irq(fdctrl, st0);
1896}
1897
1898static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
1899{
1900 RT_NOREF(direction);
1901 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1902
1903 FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
1904 if(fdctrl->reset_sensei > 0) {
1905 fdctrl->fifo[0] =
1906 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1907 fdctrl->reset_sensei--;
1908 } else {
1909 /* XXX: status0 handling is broken for read/write
1910 commands, so we do this hack. It should be suppressed
1911 ASAP */
1912 fdctrl->fifo[0] =
1913 FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1914 /* Hack to preserve SR0 on equipment check failures (no drive). */
1915 if (fdctrl->status0 & FD_SR0_EQPMT)
1916 fdctrl->fifo[0] = fdctrl->status0;
1917 }
1918
1919 fdctrl->fifo[1] = cur_drv->track;
1920 fdctrl_set_fifo(fdctrl, 2, 0);
1921 FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1922 fdctrl->status0 = FD_SR0_RDYCHG;
1923}
1924
1925static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
1926{
1927 RT_NOREF(direction);
1928 fdrive_t *cur_drv;
1929
1930 FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
1931 fdctrl->fifo[1], fdctrl->fifo[2]);
1932
1933 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1934 cur_drv = get_cur_drv(fdctrl);
1935 fdctrl_reset_fifo(fdctrl);
1936
1937 /* The seek command just sends step pulses to the drive and doesn't care if
1938 * there's a medium inserted or if it's banging the head against the drive.
1939 */
1940 cur_drv->track = fdctrl->fifo[2];
1941 cur_drv->ltrk = cur_drv->track;
1942 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1943 /* Raise Interrupt */
1944 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK | GET_CUR_DRV(fdctrl));
1945}
1946
1947static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
1948{
1949 RT_NOREF(direction);
1950 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1951
1952 if (fdctrl->fifo[1] & 0x80)
1953 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1954 /* No result back */
1955 fdctrl_reset_fifo(fdctrl);
1956}
1957
1958static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
1959{
1960 RT_NOREF(direction);
1961 fdctrl->config = fdctrl->fifo[2];
1962 fdctrl->precomp_trk = fdctrl->fifo[3];
1963 /* No result back */
1964 fdctrl_reset_fifo(fdctrl);
1965}
1966
1967static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
1968{
1969 RT_NOREF(direction);
1970 fdctrl->pwrd = fdctrl->fifo[1];
1971 fdctrl->fifo[0] = fdctrl->fifo[1];
1972 fdctrl_set_fifo(fdctrl, 1, 0);
1973}
1974
1975static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
1976{
1977 RT_NOREF(direction);
1978 /* No result back */
1979 fdctrl_reset_fifo(fdctrl);
1980}
1981
1982static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
1983{
1984 RT_NOREF(direction);
1985 /* fdrive_t *cur_drv = get_cur_drv(fdctrl); - unused */
1986
1987 /* This command takes a variable number of parameters. It can be terminated
1988 * at any time if the high bit of a parameter is set. Once there are 6 bytes
1989 * in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
1990 */
1991 if (fdctrl->data_len == 7 || (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
1992
1993 /* Command parameters done */
1994 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1995 /* Data is echoed, but not stored! */
1996 fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
1997 fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
1998 fdctrl->fifo[2] = 0;
1999 fdctrl->fifo[3] = 0;
2000 fdctrl_set_fifo(fdctrl, 4, 0);
2001 } else {
2002 fdctrl_reset_fifo(fdctrl);
2003 }
2004 } else
2005 fdctrl->data_len++; /* Wait for another byte. */
2006}
2007
2008static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2009{
2010 RT_NOREF(direction);
2011 fdrive_t *cur_drv;
2012
2013 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2014 cur_drv = get_cur_drv(fdctrl);
2015 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2016 cur_drv->track = cur_drv->max_track - 1;
2017 } else {
2018 cur_drv->track += fdctrl->fifo[2];
2019 }
2020 fdctrl_reset_fifo(fdctrl);
2021 /* Raise Interrupt */
2022 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2023}
2024
2025static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2026{
2027 RT_NOREF(direction);
2028 fdrive_t *cur_drv;
2029
2030 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2031 cur_drv = get_cur_drv(fdctrl);
2032 if (fdctrl->fifo[2] > cur_drv->track) {
2033 cur_drv->track = 0;
2034 } else {
2035 cur_drv->track -= fdctrl->fifo[2];
2036 }
2037 fdctrl_reset_fifo(fdctrl);
2038 /* Raise Interrupt */
2039 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2040}
2041
2042static const struct {
2043 uint8_t value;
2044 uint8_t mask;
2045 const char* name;
2046 int parameters;
2047 void (*handler)(fdctrl_t *fdctrl, int direction);
2048 int direction;
2049} handlers[] = {
2050 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2051 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2052 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2053 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2054 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2055 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2056 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2057 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2058 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2059 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2060 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2061 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2062 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2063 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2064 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2065 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2066 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2067 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2068 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2069 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2070 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2071 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2072 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2073 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2074 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2075 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2076 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2077 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2078 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2079 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2080 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2081 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2082};
2083/* Associate command to an index in the 'handlers' array */
2084static uint8_t command_to_handler[256];
2085
2086static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2087{
2088 fdrive_t *cur_drv;
2089 int pos;
2090
2091 cur_drv = get_cur_drv(fdctrl);
2092 /* Reset mode */
2093 if (!(fdctrl->dor & FD_DOR_nRESET)) {
2094 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2095 return;
2096 }
2097 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
2098 FLOPPY_ERROR("controller not ready for writing\n");
2099 return;
2100 }
2101 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2102 /* Is it write command time ? */
2103 if (fdctrl->msr & FD_MSR_NONDMA) {
2104 /* FIFO data write */
2105 pos = fdctrl->data_pos++;
2106 pos %= FD_SECTOR_LEN;
2107 fdctrl->fifo[pos] = value;
2108 if (pos == FD_SECTOR_LEN - 1 ||
2109 fdctrl->data_pos == fdctrl->data_len) {
2110 blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2111 }
2112 /* Switch from transfer mode to status mode
2113 * then from status mode to command mode
2114 */
2115 if (fdctrl->data_pos == fdctrl->data_len)
2116 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2117 return;
2118 }
2119 if (fdctrl->data_pos == 0) {
2120 /* Command */
2121 fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2122 pos = command_to_handler[value & 0xff];
2123 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2124 fdctrl->data_len = handlers[pos].parameters + 1;
2125 fdctrl->msr |= FD_MSR_CMDBUSY;
2126 }
2127
2128 FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2129 fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;
2130 if (fdctrl->data_pos == fdctrl->data_len) {
2131 /* We now have all parameters
2132 * and will be able to treat the command
2133 */
2134 if (fdctrl->data_state & FD_STATE_FORMAT) {
2135 fdctrl_format_sector(fdctrl);
2136 return;
2137 }
2138
2139 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2140 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2141 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2142 }
2143}
2144
2145
2146/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2147
2148/**
2149 * @callback_method_impl{FNTMTIMERDEV}
2150 */
2151static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2152{
2153 fdctrl_t *fdctrl = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2154 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2155 RT_NOREF(pTimer, pvUser);
2156
2157 /* Pretend we are spinning.
2158 * This is needed for Coherent, which uses READ ID to check for
2159 * sector interleaving.
2160 */
2161 if (cur_drv->last_sect != 0) {
2162 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2163 }
2164 /* READ_ID can't automatically succeed! */
2165 if (!cur_drv->max_track) {
2166 FLOPPY_DPRINTF("read id when no disk in drive\n");
2167 /// @todo This is wrong! Command should not complete.
2168 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2169 } else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2170 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2171 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2172 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2173 } else if (cur_drv->track >= cur_drv->max_track) {
2174 FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2175 cur_drv->track, cur_drv->max_track);
2176 cur_drv->ltrk = 0;
2177 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2178 }
2179 else
2180 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2181}
2182
2183
2184/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2185
2186/**
2187 * @callback_method_impl{FNIOMIOPORTNEWOUT, Handling 0x3f1..0x3f5 acceses.}
2188 */
2189static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort1Write(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
2190{
2191 RT_NOREF(pvUser);
2192
2193 if (cb == 1)
2194 fdctrl_write(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort + 1, u32);
2195 else
2196 ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
2197 return VINF_SUCCESS;
2198}
2199
2200
2201/**
2202 * @callback_method_impl{FNIOMIOPORTNEWIN, Handling 0x3f1..0x3f5 acceses.}
2203 */
2204static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort1Read(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb)
2205{
2206 RT_NOREF(pvUser);
2207
2208 if (cb == 1)
2209 {
2210 *pu32 = fdctrl_read(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort + 1);
2211 return VINF_SUCCESS;
2212 }
2213 return VERR_IOM_IOPORT_UNUSED;
2214}
2215
2216
2217/**
2218 * @callback_method_impl{FNIOMIOPORTNEWOUT, Handling 0x3f7 access.}
2219 */
2220static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort2Write(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
2221{
2222 RT_NOREF(offPort, pvUser);
2223 Assert(offPort == 0);
2224
2225 if (cb == 1)
2226 fdctrl_write(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), 7, u32);
2227 else
2228 ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
2229 return VINF_SUCCESS;
2230}
2231
2232
2233/**
2234 * @callback_method_impl{FNIOMIOPORTNEWIN, Handling 0x3f7 access.}
2235 */
2236static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort2Read(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb)
2237{
2238 RT_NOREF(pvUser, offPort);
2239 Assert(offPort == 0);
2240
2241 if (cb == 1)
2242 {
2243 *pu32 = fdctrl_read(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), 7);
2244 return VINF_SUCCESS;
2245 }
2246 return VERR_IOM_IOPORT_UNUSED;
2247}
2248
2249
2250/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2251
2252/**
2253 * @callback_method_impl{FNSSMDEVSAVEEXEC}
2254 */
2255static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2256{
2257 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2258 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2259 unsigned int i;
2260
2261 /* Save the FDC I/O registers... */
2262 pHlp->pfnSSMPutU8(pSSM, pThis->sra);
2263 pHlp->pfnSSMPutU8(pSSM, pThis->srb);
2264 pHlp->pfnSSMPutU8(pSSM, pThis->dor);
2265 pHlp->pfnSSMPutU8(pSSM, pThis->tdr);
2266 pHlp->pfnSSMPutU8(pSSM, pThis->dsr);
2267 pHlp->pfnSSMPutU8(pSSM, pThis->msr);
2268 /* ...the status registers... */
2269 pHlp->pfnSSMPutU8(pSSM, pThis->status0);
2270 pHlp->pfnSSMPutU8(pSSM, pThis->status1);
2271 pHlp->pfnSSMPutU8(pSSM, pThis->status2);
2272 /* ...the command FIFO... */
2273 pHlp->pfnSSMPutU32(pSSM, sizeof(pThis->fifo));
2274 pHlp->pfnSSMPutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2275 pHlp->pfnSSMPutU32(pSSM, pThis->data_pos);
2276 pHlp->pfnSSMPutU32(pSSM, pThis->data_len);
2277 pHlp->pfnSSMPutU8(pSSM, pThis->data_state);
2278 pHlp->pfnSSMPutU8(pSSM, pThis->data_dir);
2279 /* ...and miscellaneous internal FDC state. */
2280 pHlp->pfnSSMPutU8(pSSM, pThis->reset_sensei);
2281 pHlp->pfnSSMPutU8(pSSM, pThis->eot);
2282 pHlp->pfnSSMPutU8(pSSM, pThis->timer0);
2283 pHlp->pfnSSMPutU8(pSSM, pThis->timer1);
2284 pHlp->pfnSSMPutU8(pSSM, pThis->precomp_trk);
2285 pHlp->pfnSSMPutU8(pSSM, pThis->config);
2286 pHlp->pfnSSMPutU8(pSSM, pThis->lock);
2287 pHlp->pfnSSMPutU8(pSSM, pThis->pwrd);
2288 pHlp->pfnSSMPutU8(pSSM, pThis->version);
2289
2290 /* Save the number of drives and per-drive state. Note that the media
2291 * states will be updated in fd_revalidate() and need not be saved.
2292 */
2293 pHlp->pfnSSMPutU8(pSSM, pThis->num_floppies);
2294 Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2295 for (i = 0; i < pThis->num_floppies; ++i)
2296 {
2297 fdrive_t *d = &pThis->drives[i];
2298
2299 pHlp->pfnSSMPutMem(pSSM, &d->Led, sizeof(d->Led));
2300 pHlp->pfnSSMPutU32(pSSM, d->drive);
2301 pHlp->pfnSSMPutU8(pSSM, d->dsk_chg);
2302 pHlp->pfnSSMPutU8(pSSM, d->perpendicular);
2303 pHlp->pfnSSMPutU8(pSSM, d->head);
2304 pHlp->pfnSSMPutU8(pSSM, d->track);
2305 pHlp->pfnSSMPutU8(pSSM, d->sect);
2306 }
2307 return pHlp->pfnTimerSave(pDevIns, pThis->hResultTimer, pSSM);
2308}
2309
2310
2311/**
2312 * @callback_method_impl{FNSSMDEVLOADEXEC}
2313 */
2314static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2315{
2316 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2317 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2318 unsigned int i;
2319 uint32_t val32;
2320 uint8_t val8;
2321 int rc;
2322
2323 if (uVersion > FDC_SAVESTATE_CURRENT)
2324 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2325 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2326
2327 /* The old saved state was significantly different. However, we can get
2328 * back most of the controller state and fix the rest by pretending the
2329 * disk in the drive (if any) has been replaced. At any rate there should
2330 * be no difficulty unless the state was saved during a floppy operation.
2331 */
2332 if (uVersion == FDC_SAVESTATE_OLD)
2333 {
2334 /* First verify a few assumptions. */
2335 AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2336 ("The size of FIFO in saved state doesn't match!\n"),
2337 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2338 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2339 ("The number of drives in old saved state doesn't match!\n"),
2340 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2341 /* Now load the old state. */
2342 pHlp->pfnSSMGetU8(pSSM, &pThis->version);
2343 /* Toss IRQ level, DMA channel, I/O base, and state. */
2344 pHlp->pfnSSMGetU8(pSSM, &val8);
2345 pHlp->pfnSSMGetU8(pSSM, &val8);
2346 pHlp->pfnSSMGetU32(pSSM, &val32);
2347 pHlp->pfnSSMGetU8(pSSM, &val8);
2348 /* Translate dma_en. */
2349 rc = pHlp->pfnSSMGetU8(pSSM, &val8);
2350 AssertRCReturn(rc, rc);
2351 if (val8)
2352 pThis->dor |= FD_DOR_DMAEN;
2353 pHlp->pfnSSMGetU8(pSSM, &pThis->cur_drv);
2354 /* Translate bootsel. */
2355 rc = pHlp->pfnSSMGetU8(pSSM, &val8);
2356 AssertRCReturn(rc, rc);
2357 pThis->tdr |= val8 << 2;
2358 pHlp->pfnSSMGetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2359 pHlp->pfnSSMGetU32(pSSM, &pThis->data_pos);
2360 pHlp->pfnSSMGetU32(pSSM, &pThis->data_len);
2361 pHlp->pfnSSMGetU8(pSSM, &pThis->data_state);
2362 pHlp->pfnSSMGetU8(pSSM, &pThis->data_dir);
2363 pHlp->pfnSSMGetU8(pSSM, &pThis->status0);
2364 pHlp->pfnSSMGetU8(pSSM, &pThis->eot);
2365 pHlp->pfnSSMGetU8(pSSM, &pThis->timer0);
2366 pHlp->pfnSSMGetU8(pSSM, &pThis->timer1);
2367 pHlp->pfnSSMGetU8(pSSM, &pThis->precomp_trk);
2368 pHlp->pfnSSMGetU8(pSSM, &pThis->config);
2369 pHlp->pfnSSMGetU8(pSSM, &pThis->lock);
2370 pHlp->pfnSSMGetU8(pSSM, &pThis->pwrd);
2371
2372 for (i = 0; i < 2; ++i)
2373 {
2374 fdrive_t *d = &pThis->drives[i];
2375
2376 pHlp->pfnSSMGetMem(pSSM, &d->Led, sizeof (d->Led));
2377 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2378 d->drive = (fdrive_type_t)val32;
2379 AssertRCReturn(rc, rc);
2380 pHlp->pfnSSMGetU32(pSSM, &val32); /* Toss drflags */
2381 pHlp->pfnSSMGetU8(pSSM, &d->perpendicular);
2382 pHlp->pfnSSMGetU8(pSSM, &d->head);
2383 pHlp->pfnSSMGetU8(pSSM, &d->track);
2384 pHlp->pfnSSMGetU8(pSSM, &d->sect);
2385 pHlp->pfnSSMGetU8(pSSM, &val8); /* Toss dir, rw */
2386 pHlp->pfnSSMGetU8(pSSM, &val8);
2387 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2388 AssertRCReturn(rc, rc);
2389 d->flags = (fdrive_flags_t)val32;
2390 pHlp->pfnSSMGetU8(pSSM, &d->last_sect);
2391 pHlp->pfnSSMGetU8(pSSM, &d->max_track);
2392 pHlp->pfnSSMGetU16(pSSM, &d->bps);
2393 pHlp->pfnSSMGetU8(pSSM, &d->ro);
2394 }
2395 }
2396 else /* New state - straightforward. */
2397 {
2398 Assert(uVersion == FDC_SAVESTATE_CURRENT);
2399 /* Load the FDC I/O registers... */
2400 pHlp->pfnSSMGetU8(pSSM, &pThis->sra);
2401 pHlp->pfnSSMGetU8(pSSM, &pThis->srb);
2402 pHlp->pfnSSMGetU8(pSSM, &pThis->dor);
2403 pHlp->pfnSSMGetU8(pSSM, &pThis->tdr);
2404 pHlp->pfnSSMGetU8(pSSM, &pThis->dsr);
2405 pHlp->pfnSSMGetU8(pSSM, &pThis->msr);
2406 /* ...the status registers... */
2407 pHlp->pfnSSMGetU8(pSSM, &pThis->status0);
2408 pHlp->pfnSSMGetU8(pSSM, &pThis->status1);
2409 pHlp->pfnSSMGetU8(pSSM, &pThis->status2);
2410 /* ...the command FIFO, if the size matches... */
2411 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2412 AssertRCReturn(rc, rc);
2413 AssertMsgReturn(sizeof(pThis->fifo) == val32,
2414 ("The size of FIFO in saved state doesn't match!\n"),
2415 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2416 pHlp->pfnSSMGetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2417 pHlp->pfnSSMGetU32(pSSM, &pThis->data_pos);
2418 pHlp->pfnSSMGetU32(pSSM, &pThis->data_len);
2419 pHlp->pfnSSMGetU8(pSSM, &pThis->data_state);
2420 pHlp->pfnSSMGetU8(pSSM, &pThis->data_dir);
2421 /* ...and miscellaneous internal FDC state. */
2422 pHlp->pfnSSMGetU8(pSSM, &pThis->reset_sensei);
2423 pHlp->pfnSSMGetU8(pSSM, &pThis->eot);
2424 pHlp->pfnSSMGetU8(pSSM, &pThis->timer0);
2425 pHlp->pfnSSMGetU8(pSSM, &pThis->timer1);
2426 pHlp->pfnSSMGetU8(pSSM, &pThis->precomp_trk);
2427 pHlp->pfnSSMGetU8(pSSM, &pThis->config);
2428 pHlp->pfnSSMGetU8(pSSM, &pThis->lock);
2429 pHlp->pfnSSMGetU8(pSSM, &pThis->pwrd);
2430 pHlp->pfnSSMGetU8(pSSM, &pThis->version);
2431
2432 /* Validate the number of drives. */
2433 rc = pHlp->pfnSSMGetU8(pSSM, &pThis->num_floppies);
2434 AssertRCReturn(rc, rc);
2435 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2436 ("The number of drives in saved state doesn't match!\n"),
2437 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2438
2439 /* Load the per-drive state. */
2440 for (i = 0; i < pThis->num_floppies; ++i)
2441 {
2442 fdrive_t *d = &pThis->drives[i];
2443
2444 pHlp->pfnSSMGetMem(pSSM, &d->Led, sizeof(d->Led));
2445 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2446 AssertRCReturn(rc, rc);
2447 d->drive = (fdrive_type_t)val32;
2448 pHlp->pfnSSMGetU8(pSSM, &d->dsk_chg);
2449 pHlp->pfnSSMGetU8(pSSM, &d->perpendicular);
2450 pHlp->pfnSSMGetU8(pSSM, &d->head);
2451 pHlp->pfnSSMGetU8(pSSM, &d->track);
2452 pHlp->pfnSSMGetU8(pSSM, &d->sect);
2453 }
2454 }
2455 return pHlp->pfnTimerLoad(pDevIns, pThis->hResultTimer, pSSM);
2456}
2457
2458
2459/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2460
2461/**
2462 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2463 */
2464static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2465{
2466 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2467 LogFlow(("fdMountNotify:\n"));
2468 fd_revalidate(pDrv);
2469}
2470
2471
2472/**
2473 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2474 */
2475static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2476{
2477 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2478 LogFlow(("fdUnmountNotify:\n"));
2479 fd_revalidate(pDrv);
2480}
2481
2482
2483/**
2484 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2485 */
2486static DECLCALLBACK(void *) fdQueryInterface (PPDMIBASE pInterface, const char *pszIID)
2487{
2488 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2489
2490 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2491 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pDrv->IPort);
2492 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2493 return NULL;
2494}
2495
2496
2497/**
2498 * @interface_method_impl{PDMIMEDIAPORT,pfnQueryDeviceLocation}
2499 */
2500static DECLCALLBACK(int) fdQueryDeviceLocation(PPDMIMEDIAPORT pInterface, const char **ppcszController,
2501 uint32_t *piInstance, uint32_t *piLUN)
2502{
2503 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IPort);
2504 PPDMDEVINS pDevIns = pDrv->pDevIns;
2505
2506 AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2507 AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2508 AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2509
2510 *ppcszController = pDevIns->pReg->szName;
2511 *piInstance = pDevIns->iInstance;
2512 *piLUN = pDrv->iLUN;
2513
2514 return VINF_SUCCESS;
2515}
2516
2517/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2518
2519/**
2520 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2521 */
2522static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2523{
2524 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2525 if (iLUN < RT_ELEMENTS(pThis->drives)) {
2526 *ppLed = &pThis->drives[iLUN].Led;
2527 Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2528 return VINF_SUCCESS;
2529 }
2530 return VERR_PDM_LUN_NOT_FOUND;
2531}
2532
2533
2534/**
2535 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2536 */
2537static DECLCALLBACK(void *) fdcStatusQueryInterface(PPDMIBASE pInterface, const char *pszIID)
2538{
2539 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2540
2541 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2542 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2543 return NULL;
2544}
2545
2546
2547/**
2548 * Configure a drive.
2549 *
2550 * @returns VBox status code.
2551 * @param drv The drive in question.
2552 * @param pDevIns The driver instance.
2553 * @param fInit Set if we're at init time and can change the drive type.
2554 */
2555static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2556{
2557 static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2558 int rc;
2559
2560 /*
2561 * Reset the LED just to be on the safe side.
2562 */
2563 Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2564 Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2565 drv->Led.Actual.u32 = 0;
2566 drv->Led.Asserted.u32 = 0;
2567
2568 /*
2569 * Try attach the block device and get the interfaces.
2570 */
2571 rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2572 if (RT_SUCCESS (rc)) {
2573 drv->pDrvMedia = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMEDIA);
2574 if (drv->pDrvMedia) {
2575 drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2576 if (drv->pDrvMount) {
2577 fd_init(drv, fInit);
2578 } else {
2579 AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2580 rc = VERR_PDM_MISSING_INTERFACE;
2581 }
2582
2583 } else {
2584 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2585 rc = VERR_PDM_MISSING_INTERFACE;
2586 }
2587 } else {
2588 AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2589 ("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2590 switch (rc) {
2591 case VERR_ACCESS_DENIED:
2592 /* Error already cached by DrvHostBase */
2593 break;
2594 case VERR_PDM_NO_ATTACHED_DRIVER:
2595 /* Legal on architectures without a floppy controller */
2596 break;
2597 default:
2598 rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2599 N_ ("The floppy controller cannot attach to the floppy drive"));
2600 break;
2601 }
2602 }
2603
2604 if (RT_FAILURE (rc)) {
2605 drv->pDrvBase = NULL;
2606 drv->pDrvMedia = NULL;
2607 drv->pDrvMount = NULL;
2608 }
2609 LogFlow (("fdConfig: returns %Rrc\n", rc));
2610 return rc;
2611}
2612
2613
2614/**
2615 * @interface_method_impl{PDMDEVREG,pfnAttach}
2616 *
2617 * This is called when we change block driver for a floppy drive.
2618 */
2619static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2620{
2621 fdctrl_t *fdctrl = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2622 fdrive_t *drv;
2623 int rc;
2624 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2625
2626 AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2627 ("The FDC device does not support hotplugging\n"),
2628 VERR_INVALID_PARAMETER);
2629
2630 /*
2631 * Validate.
2632 */
2633 if (iLUN >= 2) {
2634 AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2635 iLUN));
2636 return VERR_PDM_DEVINS_NO_ATTACH;
2637 }
2638
2639 /*
2640 * Locate the drive and stuff.
2641 */
2642 drv = &fdctrl->drives[iLUN];
2643
2644 /* the usual paranoia */
2645 AssertRelease (!drv->pDrvBase);
2646 AssertRelease (!drv->pDrvMedia);
2647 AssertRelease (!drv->pDrvMount);
2648
2649 rc = fdConfig (drv, pDevIns, false /*fInit*/);
2650 AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2651 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", iLUN, rc));
2652 if (RT_SUCCESS(rc)) {
2653 fd_revalidate (drv);
2654 }
2655
2656 LogFlow (("floppyAttach: returns %Rrc\n", rc));
2657 return rc;
2658}
2659
2660
2661/**
2662 * @interface_method_impl{PDMDEVREG,pfnDetach}
2663 *
2664 * The floppy drive has been temporarily 'unplugged'.
2665 */
2666static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2667{
2668 RT_NOREF(fFlags);
2669 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2670 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2671
2672 switch (iLUN)
2673 {
2674 case 0:
2675 case 1:
2676 {
2677 fdrive_t *drv = &pThis->drives[iLUN];
2678 drv->pDrvBase = NULL;
2679 drv->pDrvMedia = NULL;
2680 drv->pDrvMount = NULL;
2681 break;
2682 }
2683
2684 default:
2685 AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2686 break;
2687 }
2688}
2689
2690
2691/**
2692 * @interface_method_impl{PDMDEVREG,pfnReset}
2693 *
2694 * I haven't check the specs on what's supposed to happen on reset, but we
2695 * should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2696 * at wrong time like we do if this was all void.
2697 */
2698static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2699{
2700 fdctrl_t *pThis = PDMDEVINS_2_DATA (pDevIns, fdctrl_t *);
2701 unsigned i;
2702 LogFlow (("fdcReset:\n"));
2703
2704 fdctrl_reset(pThis, 0);
2705
2706 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2707 fd_revalidate(&pThis->drives[i]);
2708}
2709
2710
2711/**
2712 * @interface_method_impl{PDMDEVREG,pfnConstruct}
2713 */
2714static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2715{
2716 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2717 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2718 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2719 int rc;
2720
2721 RT_NOREF(iInstance);
2722 Assert(iInstance == 0);
2723
2724 /*
2725 * Validate configuration.
2726 */
2727 PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IRQ|DMA|MemMapped|IOBase", "");
2728
2729 /*
2730 * Read the configuration.
2731 */
2732 rc = pHlp->pfnCFGMQueryU8Def(pCfg, "IRQ", &pThis->irq_lvl, 6);
2733 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2734
2735 rc = pHlp->pfnCFGMQueryU8Def(pCfg, "DMA", &pThis->dma_chann, 2);
2736 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2737
2738 rc = pHlp->pfnCFGMQueryU16Def(pCfg, "IOBase", &pThis->io_base, 0x3f0);
2739 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2740
2741 bool fMemMapped;
2742 rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "MemMapped", &fMemMapped, false);
2743 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2744
2745 /*
2746 * Initialize data.
2747 */
2748 LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", pThis->irq_lvl, pThis->dma_chann, pThis->io_base));
2749 pThis->pDevIns = pDevIns;
2750 pThis->version = 0x90; /* Intel 82078 controller */
2751 pThis->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2752 pThis->num_floppies = MAX_FD;
2753
2754 /* Fill 'command_to_handler' lookup table */
2755 for (int ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2756 for (unsigned j = 0; j < sizeof(command_to_handler); j++)
2757 if ((j & handlers[ii].mask) == handlers[ii].value)
2758 command_to_handler[j] = ii;
2759
2760 pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2761 pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2762
2763 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2764 {
2765 fdrive_t *pDrv = &pThis->drives[i];
2766
2767 pDrv->drive = FDRIVE_DRV_NONE;
2768 pDrv->iLUN = i;
2769 pDrv->pDevIns = pDevIns;
2770
2771 pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2772 pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2773 pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2774 pDrv->IPort.pfnQueryDeviceLocation = fdQueryDeviceLocation;
2775 pDrv->Led.u32Magic = PDMLED_MAGIC;
2776 }
2777
2778 /*
2779 * Create the FDC timer.
2780 */
2781 rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2782 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->hResultTimer);
2783 AssertRCReturn(rc, rc);
2784
2785 /*
2786 * Register DMA channel.
2787 */
2788 if (pThis->dma_chann != 0xff)
2789 {
2790 rc = PDMDevHlpDMARegister(pDevIns, pThis->dma_chann, &fdctrl_transfer_handler, pThis);
2791 AssertRCReturn(rc, rc);
2792 }
2793
2794 /*
2795 * IO / MMIO.
2796 *
2797 * We must skip I/O port 0x3f6 as it is the ATA alternate status register.
2798 * Why we skip registering status register A, though, isn't as clear.
2799 */
2800 if (!fMemMapped)
2801 {
2802 static const IOMIOPORTDESC s_aDescs[] =
2803 {
2804 { "SRA", NULL, "Status register A", NULL },
2805 { "SRB", NULL, "Status register B", NULL },
2806 { "DOR", "DOR", "Digital output register", "Digital output register"},
2807 { "TDR", "TDR", "Tape driver register", "Tape driver register"},
2808 { "MSR", "DSR", "Main status register", "Datarate select register" },
2809 { "FIFO", "FIFO", "Data FIFO", "Data FIFO" },
2810 { "ATA", "ATA", NULL, NULL },
2811 { "DIR", "CCR", "Digital input register", "Configuration control register"},
2812 { NULL, NULL, NULL, NULL }
2813 };
2814
2815 /* 0x3f1..0x3f5 */
2816 rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pThis->io_base + 0x1, 5, fdcIoPort1Write, fdcIoPort1Read,
2817 "FDC#1", &s_aDescs[1], &pThis->hIoPorts1);
2818 AssertRCReturn(rc, rc);
2819
2820 /* 0x3f7 */
2821 rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pThis->io_base + 0x7, 1, fdcIoPort2Write, fdcIoPort2Read,
2822 "FDC#2", &s_aDescs[7], &pThis->hIoPorts2);
2823 AssertRCReturn(rc, rc);
2824 }
2825 else
2826 AssertMsgFailedReturn(("Memory mapped floppy not support by now\n"), VERR_NOT_SUPPORTED);
2827
2828 /*
2829 * Register the saved state data unit.
2830 */
2831 rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
2832 AssertRCReturn(rc, rc);
2833
2834 /*
2835 * Attach the status port (optional).
2836 */
2837 PPDMIBASE pBase;
2838 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
2839 if (RT_SUCCESS (rc))
2840 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
2841 else
2842 AssertMsgReturn(rc == VERR_PDM_NO_ATTACHED_DRIVER, ("Failed to attach to status driver. rc=%Rrc\n", rc), rc);
2843
2844 /*
2845 * Initialize drives.
2846 */
2847 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2848 {
2849 rc = fdConfig(&pThis->drives[i], pDevIns, true /*fInit*/);
2850 AssertMsgReturn(RT_SUCCESS(rc) || rc == VERR_PDM_NO_ATTACHED_DRIVER,
2851 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", i, rc),
2852 rc);
2853 }
2854
2855 fdctrl_reset(pThis, 0);
2856
2857 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2858 fd_revalidate(&pThis->drives[i]);
2859
2860 return VINF_SUCCESS;
2861}
2862
2863
2864/**
2865 * The device registration structure.
2866 */
2867const PDMDEVREG g_DeviceFloppyController =
2868{
2869 /* .u32Version = */ PDM_DEVREG_VERSION,
2870 /* .uReserved0 = */ 0,
2871 /* .szName = */ "i82078",
2872 /* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_NEW_STYLE,
2873 /* .fClass = */ PDM_DEVREG_CLASS_STORAGE,
2874 /* .cMaxInstances = */ 1,
2875 /* .uSharedVersion = */ 42,
2876 /* .cbInstanceShared = */ sizeof(fdctrl_t),
2877 /* .cbInstanceCC = */ 0,
2878 /* .cbInstanceRC = */ 0,
2879 /* .cMaxPciDevices = */ 0,
2880 /* .cMaxMsixVectors = */ 0,
2881 /* .pszDescription = */ "Floppy drive controller (Intel 82078)",
2882#if defined(IN_RING3)
2883 /* .pszRCMod = */ "",
2884 /* .pszR0Mod = */ "",
2885 /* .pfnConstruct = */ fdcConstruct,
2886 /* .pfnDestruct = */ NULL,
2887 /* .pfnRelocate = */ NULL,
2888 /* .pfnMemSetup = */ NULL,
2889 /* .pfnPowerOn = */ NULL,
2890 /* .pfnReset = */ fdcReset,
2891 /* .pfnSuspend = */ NULL,
2892 /* .pfnResume = */ NULL,
2893 /* .pfnAttach = */ fdcAttach,
2894 /* .pfnDetach = */ fdcDetach,
2895 /* .pfnQueryInterface = */ NULL,
2896 /* .pfnInitComplete = */ NULL,
2897 /* .pfnPowerOff = */ NULL,
2898 /* .pfnSoftReset = */ NULL,
2899 /* .pfnReserved0 = */ NULL,
2900 /* .pfnReserved1 = */ NULL,
2901 /* .pfnReserved2 = */ NULL,
2902 /* .pfnReserved3 = */ NULL,
2903 /* .pfnReserved4 = */ NULL,
2904 /* .pfnReserved5 = */ NULL,
2905 /* .pfnReserved6 = */ NULL,
2906 /* .pfnReserved7 = */ NULL,
2907#elif defined(IN_RING0)
2908 /* .pfnEarlyConstruct = */ NULL,
2909 /* .pfnConstruct = */ NULL,
2910 /* .pfnDestruct = */ NULL,
2911 /* .pfnFinalDestruct = */ NULL,
2912 /* .pfnRequest = */ NULL,
2913 /* .pfnReserved0 = */ NULL,
2914 /* .pfnReserved1 = */ NULL,
2915 /* .pfnReserved2 = */ NULL,
2916 /* .pfnReserved3 = */ NULL,
2917 /* .pfnReserved4 = */ NULL,
2918 /* .pfnReserved5 = */ NULL,
2919 /* .pfnReserved6 = */ NULL,
2920 /* .pfnReserved7 = */ NULL,
2921#elif defined(IN_RC)
2922 /* .pfnConstruct = */ NULL,
2923 /* .pfnReserved0 = */ NULL,
2924 /* .pfnReserved1 = */ NULL,
2925 /* .pfnReserved2 = */ NULL,
2926 /* .pfnReserved3 = */ NULL,
2927 /* .pfnReserved4 = */ NULL,
2928 /* .pfnReserved5 = */ NULL,
2929 /* .pfnReserved6 = */ NULL,
2930 /* .pfnReserved7 = */ NULL,
2931#else
2932# error "Not in IN_RING3, IN_RING0 or IN_RC!"
2933#endif
2934 /* .u32VersionEnd = */ PDM_DEVREG_VERSION
2935};
2936
2937/*
2938 * Local Variables:
2939 * mode: c
2940 * c-file-style: "k&r"
2941 * indent-tabs-mode: nil
2942 * End:
2943 */
2944
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