VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 82008

Last change on this file since 82008 was 81995, checked in by vboxsync, 5 years ago

DevFDC: Added option for enabling access to status register A (SRA) - PS/2++ not org PC. bugref:9218
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  • Property svn:keywords set to Id Revision
File size: 102.5 KB
Line 
1/* $Id: DevFdc.cpp 81995 2019-11-19 13:46:52Z 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: 0x3f0 */
695 IOMIOPORTHANDLE hIoPorts0;
696 /** I/O ports: 0x3f1..0x3f5 */
697 IOMIOPORTHANDLE hIoPorts1;
698 /** I/O port: 0x3f7 */
699 IOMIOPORTHANDLE hIoPorts2;
700};
701
702static uint32_t fdctrl_read (fdctrl_t *fdctrl, uint32_t reg)
703{
704 uint32_t retval;
705
706 switch (reg) {
707 case FD_REG_SRA:
708 retval = fdctrl_read_statusA(fdctrl);
709 break;
710 case FD_REG_SRB:
711 retval = fdctrl_read_statusB(fdctrl);
712 break;
713 case FD_REG_DOR:
714 retval = fdctrl_read_dor(fdctrl);
715 break;
716 case FD_REG_TDR:
717 retval = fdctrl_read_tape(fdctrl);
718 break;
719 case FD_REG_MSR:
720 retval = fdctrl_read_main_status(fdctrl);
721 break;
722 case FD_REG_FIFO:
723 retval = fdctrl_read_data(fdctrl);
724 break;
725 case FD_REG_DIR:
726 retval = fdctrl_read_dir(fdctrl);
727 break;
728 default:
729 retval = UINT32_MAX;
730 break;
731 }
732 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
733
734 return retval;
735}
736
737static void fdctrl_write (fdctrl_t *fdctrl, uint32_t reg, uint32_t value)
738{
739 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
740
741 switch (reg) {
742 case FD_REG_DOR:
743 fdctrl_write_dor(fdctrl, value);
744 break;
745 case FD_REG_TDR:
746 fdctrl_write_tape(fdctrl, value);
747 break;
748 case FD_REG_DSR:
749 fdctrl_write_rate(fdctrl, value);
750 break;
751 case FD_REG_FIFO:
752 fdctrl_write_data(fdctrl, value);
753 break;
754 case FD_REG_CCR:
755 fdctrl_write_ccr(fdctrl, value);
756 break;
757 default:
758 break;
759 }
760}
761
762/* Change IRQ state */
763static void fdctrl_reset_irq(fdctrl_t *fdctrl)
764{
765 if (!(fdctrl->sra & FD_SRA_INTPEND))
766 return;
767 FLOPPY_DPRINTF("Reset interrupt\n");
768 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
769 fdctrl->sra &= ~FD_SRA_INTPEND;
770}
771
772static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
773{
774 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
775 FLOPPY_DPRINTF("Raising interrupt...\n");
776 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
777 fdctrl->sra |= FD_SRA_INTPEND;
778 }
779 if (status0 & FD_SR0_SEEK) {
780 fdrive_t *cur_drv;
781
782 /* A seek clears the disk change line (if a disk is inserted). */
783 cur_drv = get_cur_drv(fdctrl);
784 if (cur_drv->max_track)
785 cur_drv->dsk_chg = false;
786 }
787
788 fdctrl->reset_sensei = 0;
789 fdctrl->status0 = status0;
790 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
791}
792
793/* Reset controller */
794static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
795{
796 int i;
797
798 FLOPPY_DPRINTF("reset controller\n");
799 fdctrl_reset_irq(fdctrl);
800 /* Initialise controller */
801 fdctrl->sra = 0;
802 fdctrl->srb = 0xc0;
803 if (!fdctrl->drives[1].pDrvMedia)
804 fdctrl->sra |= FD_SRA_nDRV2;
805 fdctrl->cur_drv = 0;
806 fdctrl->dor = FD_DOR_nRESET;
807 fdctrl->dor |= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
808 fdctrl->msr = FD_MSR_RQM;
809 /* FIFO state */
810 fdctrl->data_pos = 0;
811 fdctrl->data_len = 0;
812 fdctrl->data_state = 0;
813 fdctrl->data_dir = FD_DIR_WRITE;
814 for (i = 0; i < MAX_FD; i++)
815 fd_recalibrate(&fdctrl->drives[i]);
816 fdctrl_reset_fifo(fdctrl);
817 if (do_irq) {
818 fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
819 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
820 }
821}
822
823static inline fdrive_t *drv0(fdctrl_t *fdctrl)
824{
825 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
826}
827
828static inline fdrive_t *drv1(fdctrl_t *fdctrl)
829{
830 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
831 return &fdctrl->drives[1];
832 else
833 return &fdctrl->drives[0];
834}
835
836#if MAX_FD == 4
837static inline fdrive_t *drv2(fdctrl_t *fdctrl)
838{
839 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
840 return &fdctrl->drives[2];
841 else
842 return &fdctrl->drives[1];
843}
844
845static inline fdrive_t *drv3(fdctrl_t *fdctrl)
846{
847 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
848 return &fdctrl->drives[3];
849 else
850 return &fdctrl->drives[2];
851}
852#endif
853
854static fdrive_t *get_cur_drv(fdctrl_t *fdctrl)
855{
856 switch (fdctrl->cur_drv) {
857 case 0: return drv0(fdctrl);
858 case 1: return drv1(fdctrl);
859#if MAX_FD == 4
860 case 2: return drv2(fdctrl);
861 case 3: return drv3(fdctrl);
862#endif
863 default: return NULL;
864 }
865}
866
867/* Status A register : 0x00 (read-only) */
868static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
869{
870 uint32_t retval = fdctrl->sra;
871
872 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
873
874 return retval;
875}
876
877/* Status B register : 0x01 (read-only) */
878static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
879{
880 uint32_t retval = fdctrl->srb;
881
882 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
883
884 return retval;
885}
886
887/* Digital output register : 0x02 */
888static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
889{
890 uint32_t retval = fdctrl->dor;
891
892 /* Selected drive */
893 retval |= fdctrl->cur_drv;
894 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
895
896 return retval;
897}
898
899static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
900{
901 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
902
903 /* Motors */
904 if (value & FD_DOR_MOTEN0)
905 fdctrl->srb |= FD_SRB_MTR0;
906 else
907 fdctrl->srb &= ~FD_SRB_MTR0;
908 if (value & FD_DOR_MOTEN1)
909 fdctrl->srb |= FD_SRB_MTR1;
910 else
911 fdctrl->srb &= ~FD_SRB_MTR1;
912
913 /* Drive */
914 if (value & 1)
915 fdctrl->srb |= FD_SRB_DR0;
916 else
917 fdctrl->srb &= ~FD_SRB_DR0;
918
919 /* Reset */
920 if (!(value & FD_DOR_nRESET)) {
921 if (fdctrl->dor & FD_DOR_nRESET) {
922 FLOPPY_DPRINTF("controller enter RESET state\n");
923 }
924 } else {
925 if (!(fdctrl->dor & FD_DOR_nRESET)) {
926 FLOPPY_DPRINTF("controller out of RESET state\n");
927 fdctrl_reset(fdctrl, 1);
928 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
929 }
930 }
931 /* Selected drive */
932 fdctrl->cur_drv = value & FD_DOR_SELMASK;
933
934 fdctrl->dor = value;
935}
936
937/* Tape drive register : 0x03 */
938static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
939{
940 uint32_t retval = fdctrl->tdr;
941
942 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
943
944 return retval;
945}
946
947static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
948{
949 /* Reset mode */
950 if (!(fdctrl->dor & FD_DOR_nRESET)) {
951 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
952 return;
953 }
954 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
955 /* Disk boot selection indicator */
956 fdctrl->tdr = value & FD_TDR_BOOTSEL;
957 /* Tape indicators: never allow */
958}
959
960/* Main status register : 0x04 (read) */
961static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
962{
963 uint32_t retval = fdctrl->msr;
964
965 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
966 fdctrl->dor |= FD_DOR_nRESET;
967
968 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
969
970 return retval;
971}
972
973/* Data select rate register : 0x04 (write) */
974static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
975{
976 /* Reset mode */
977 if (!(fdctrl->dor & FD_DOR_nRESET)) {
978 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
979 return;
980 }
981 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
982 /* Reset: autoclear */
983 if (value & FD_DSR_SWRESET) {
984 fdctrl->dor &= ~FD_DOR_nRESET;
985 fdctrl_reset(fdctrl, 1);
986 fdctrl->dor |= FD_DOR_nRESET;
987 }
988 if (value & FD_DSR_PWRDOWN) {
989 fdctrl_reset(fdctrl, 1);
990 }
991 fdctrl->dsr = value;
992}
993
994/* Configuration control register : 0x07 (write) */
995static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
996{
997 /* Reset mode */
998 if (!(fdctrl->dor & FD_DOR_nRESET)) {
999 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1000 return;
1001 }
1002 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1003
1004 /* Only the rate selection bits used in AT mode, and we
1005 * store those in the DSR.
1006 */
1007 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | (value & FD_DSR_DRATEMASK);
1008}
1009
1010static int fdctrl_media_changed(fdrive_t *drv)
1011{
1012 return drv->dsk_chg;
1013}
1014
1015/* Digital input register : 0x07 (read-only) */
1016static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1017{
1018 uint32_t retval = 0;
1019
1020 /* The change line signal is reported by the currently selected
1021 * drive. If the corresponding motor on bit is not set, the drive
1022 * is *not* selected!
1023 */
1024 if (fdctrl_media_changed(get_cur_drv(fdctrl))
1025 && (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1026 retval |= FD_DIR_DSKCHG;
1027 if (retval != 0)
1028 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1029
1030 return retval;
1031}
1032
1033/* FIFO state control */
1034static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1035{
1036 fdctrl->data_dir = FD_DIR_WRITE;
1037 fdctrl->data_pos = 0;
1038 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1039}
1040
1041/* Set FIFO status for the host to read */
1042static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1043{
1044 fdctrl->data_dir = FD_DIR_READ;
1045 fdctrl->data_len = fifo_len;
1046 fdctrl->data_pos = 0;
1047 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1048 if (do_irq)
1049 fdctrl_raise_irq(fdctrl, 0x00);
1050}
1051
1052/* Set an error: unimplemented/unknown command */
1053static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1054{
1055 RT_NOREF(direction);
1056 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1057 fdctrl->fifo[0] = FD_SR0_INVCMD;
1058 fdctrl_set_fifo(fdctrl, 1, 0);
1059}
1060
1061/* Seek to next sector */
1062static int fdctrl_seek_to_next_sect(fdctrl_t *fdctrl, fdrive_t *cur_drv)
1063{
1064 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1065 cur_drv->head, cur_drv->track, cur_drv->sect,
1066 fd_sector(cur_drv));
1067 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1068 error in fact */
1069 if (cur_drv->sect >= cur_drv->last_sect ||
1070 cur_drv->sect == fdctrl->eot) {
1071 cur_drv->sect = 1;
1072 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1073 if (cur_drv->head == 0 &&
1074 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1075 cur_drv->head = 1;
1076 } else {
1077 cur_drv->head = 0;
1078 cur_drv->ltrk++;
1079 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1080 return 0;
1081 }
1082 } else {
1083 cur_drv->ltrk++;
1084 return 0;
1085 }
1086 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1087 cur_drv->head, cur_drv->track,
1088 cur_drv->sect, fd_sector(cur_drv));
1089 } else {
1090 cur_drv->sect++;
1091 }
1092 return 1;
1093}
1094
1095/* Callback for transfer end (stop or abort) */
1096static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1097 uint8_t status1, uint8_t status2)
1098{
1099 fdrive_t *cur_drv;
1100
1101 cur_drv = get_cur_drv(fdctrl);
1102 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1103 status0, status1, status2,
1104 status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1105 fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1106 fdctrl->fifo[1] = status1;
1107 fdctrl->fifo[2] = status2;
1108 fdctrl->fifo[3] = cur_drv->ltrk;
1109 fdctrl->fifo[4] = cur_drv->head;
1110 fdctrl->fifo[5] = cur_drv->sect;
1111 fdctrl->fifo[6] = FD_SECTOR_SC;
1112 FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1113 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1114 fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1115
1116 fdctrl->data_dir = FD_DIR_READ;
1117 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1118 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1119 }
1120 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1121 fdctrl->msr &= ~FD_MSR_NONDMA;
1122 fdctrl_set_fifo(fdctrl, 7, 1);
1123}
1124
1125/* Prepare a data transfer (either DMA or FIFO) */
1126static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1127{
1128 fdrive_t *cur_drv;
1129 uint8_t kh, kt, ks;
1130 int did_seek = 0;
1131
1132 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1133 cur_drv = get_cur_drv(fdctrl);
1134 kt = fdctrl->fifo[2];
1135 kh = fdctrl->fifo[3];
1136 ks = fdctrl->fifo[4];
1137 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1138 GET_CUR_DRV(fdctrl), kh, kt, ks,
1139 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1140 FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1141 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1142 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1143 fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1144 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1145 case 2:
1146 /* sect too big */
1147 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1148 fdctrl->fifo[3] = kt;
1149 fdctrl->fifo[4] = kh;
1150 fdctrl->fifo[5] = ks;
1151 return;
1152 case 3:
1153 /* track too big */
1154 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1155 fdctrl->fifo[3] = kt;
1156 fdctrl->fifo[4] = kh;
1157 fdctrl->fifo[5] = ks;
1158 return;
1159 case 4:
1160 /* No seek enabled */
1161 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1162 fdctrl->fifo[3] = kt;
1163 fdctrl->fifo[4] = kh;
1164 fdctrl->fifo[5] = ks;
1165 return;
1166 case 5:
1167 /* No disk in drive */
1168 /// @todo This is wrong! Command should not complete.
1169 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | 0x08, /*FD_SR1_MA |*/ FD_SR1_ND, 0x00);
1170 fdctrl->fifo[3] = kt;
1171 fdctrl->fifo[4] = kh;
1172 fdctrl->fifo[5] = ks;
1173 return;
1174 case 1:
1175 did_seek = 1;
1176 break;
1177 default:
1178 break;
1179 }
1180 /* Check the data rate. If the programmed data rate does not match
1181 * the currently inserted medium, the operation has to fail.
1182 */
1183 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1184 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1185 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1186 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1187 fdctrl->fifo[3] = kt;
1188 fdctrl->fifo[4] = kh;
1189 fdctrl->fifo[5] = ks;
1190 return;
1191 }
1192 /* Set the FIFO state */
1193 fdctrl->data_dir = direction;
1194 fdctrl->data_pos = 0;
1195 fdctrl->msr |= FD_MSR_CMDBUSY;
1196 if (fdctrl->fifo[0] & 0x80)
1197 fdctrl->data_state |= FD_STATE_MULTI;
1198 else
1199 fdctrl->data_state &= ~FD_STATE_MULTI;
1200 if (did_seek)
1201 fdctrl->data_state |= FD_STATE_SEEK;
1202 else
1203 fdctrl->data_state &= ~FD_STATE_SEEK;
1204 if (fdctrl->fifo[5] == 00) {
1205 fdctrl->data_len = fdctrl->fifo[8];
1206 } else {
1207 int tmp;
1208 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1209 tmp = (fdctrl->fifo[6] - ks + 1);
1210 if (fdctrl->fifo[0] & 0x80)
1211 tmp += fdctrl->fifo[6];
1212 fdctrl->data_len *= tmp;
1213 }
1214 fdctrl->eot = fdctrl->fifo[6];
1215 if (fdctrl->dor & FD_DOR_DMAEN) {
1216 int dma_mode;
1217 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1218 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1219 dma_mode = (dma_mode >> 2) & 3;
1220 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1221 dma_mode, direction,
1222 (128 << fdctrl->fifo[5]) *
1223 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1224 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1225 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1226 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1227 (direction == FD_DIR_READ && (dma_mode == 1 || dma_mode == 0))) {
1228 /* No access is allowed until DMA transfer has completed */
1229 fdctrl->msr &= ~FD_MSR_RQM;
1230 /* Now, we just have to wait for the DMA controller to
1231 * recall us...
1232 */
1233 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1234 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1235 return;
1236 } else {
1237 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1238 }
1239 }
1240 FLOPPY_DPRINTF("start non-DMA transfer\n");
1241 fdctrl->msr |= FD_MSR_NONDMA;
1242 if (direction != FD_DIR_WRITE)
1243 fdctrl->msr |= FD_MSR_DIO;
1244 /* IO based transfer: calculate len */
1245 fdctrl_raise_irq(fdctrl, 0x00);
1246
1247 return;
1248}
1249
1250/* Prepare a format data transfer (either DMA or FIFO) */
1251static void fdctrl_start_format(fdctrl_t *fdctrl)
1252{
1253 fdrive_t *cur_drv;
1254 uint8_t ns, dp, kh, kt, ks;
1255
1256 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1257 cur_drv = get_cur_drv(fdctrl);
1258 kt = cur_drv->track;
1259 kh = (fdctrl->fifo[1] & 0x04) >> 2;
1260 ns = fdctrl->fifo[3];
1261 dp = fdctrl->fifo[5];
1262 ks = 1;
1263 FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1264 GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1265 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1266 switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1267 case 2:
1268 /* sect too big */
1269 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1270 fdctrl->fifo[3] = kt;
1271 fdctrl->fifo[4] = kh;
1272 fdctrl->fifo[5] = ks;
1273 return;
1274 case 3:
1275 /* track too big */
1276 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1277 fdctrl->fifo[3] = kt;
1278 fdctrl->fifo[4] = kh;
1279 fdctrl->fifo[5] = ks;
1280 return;
1281 case 4:
1282 /* No seek enabled */
1283 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1284 fdctrl->fifo[3] = kt;
1285 fdctrl->fifo[4] = kh;
1286 fdctrl->fifo[5] = ks;
1287 return;
1288 case 5:
1289 /* No disk in drive */
1290 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1291 fdctrl->fifo[3] = kt;
1292 fdctrl->fifo[4] = kh;
1293 fdctrl->fifo[5] = ks;
1294 return;
1295 case 1:
1296 break;
1297 default:
1298 break;
1299 }
1300 /* It's not clear what should happen if the data rate does not match. */
1301#if 0
1302 /* Check the data rate. If the programmed data rate does not match
1303 * the currently inserted medium, the operation has to fail.
1304 */
1305 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1306 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1307 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1308 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1309 fdctrl->fifo[3] = kt;
1310 fdctrl->fifo[4] = kh;
1311 fdctrl->fifo[5] = ks;
1312 return;
1313 }
1314#endif
1315 /* Set the FIFO state */
1316 fdctrl->data_dir = FD_DIR_FORMAT;
1317 fdctrl->data_pos = 0;
1318 fdctrl->msr |= FD_MSR_CMDBUSY;
1319 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1320 fdctrl->data_len = ns * 4;
1321 fdctrl->eot = ns;
1322 if (fdctrl->dor & FD_DOR_DMAEN) {
1323 int dma_mode;
1324 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1325 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1326 dma_mode = (dma_mode >> 2) & 3;
1327 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1328 dma_mode, fdctrl->data_dir,
1329 (128 << fdctrl->fifo[2]) *
1330 (cur_drv->last_sect + 1), fdctrl->data_len);
1331 if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1332 /* No access is allowed until DMA transfer has completed */
1333 fdctrl->msr &= ~FD_MSR_RQM;
1334 /* Now, we just have to wait for the DMA controller to
1335 * recall us...
1336 */
1337 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1338 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1339 return;
1340 } else {
1341 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1342 }
1343 }
1344 FLOPPY_DPRINTF("start non-DMA format\n");
1345 fdctrl->msr |= FD_MSR_NONDMA;
1346 /* IO based transfer: calculate len */
1347 fdctrl_raise_irq(fdctrl, 0x00);
1348
1349 return;
1350}
1351
1352/* Prepare a transfer of deleted data */
1353static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1354{
1355 RT_NOREF(direction);
1356 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1357
1358 /* We don't handle deleted data,
1359 * so we don't return *ANYTHING*
1360 */
1361 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1362}
1363
1364/* Block driver read/write wrappers. */
1365
1366static int blk_write(fdrive_t *drv, int64_t sector_num, const uint8_t *buf, int nb_sectors)
1367{
1368 int rc;
1369
1370 drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1371
1372 rc = drv->pDrvMedia->pfnWrite(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1373 buf, nb_sectors * FD_SECTOR_LEN);
1374
1375 drv->Led.Actual.s.fWriting = 0;
1376 if (RT_FAILURE(rc))
1377 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1378
1379 return rc;
1380}
1381
1382static int blk_read(fdrive_t *drv, int64_t sector_num, uint8_t *buf, int nb_sectors)
1383{
1384 int rc;
1385
1386 drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1387
1388 rc = drv->pDrvMedia->pfnRead(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1389 buf, nb_sectors * FD_SECTOR_LEN);
1390
1391 drv->Led.Actual.s.fReading = 0;
1392
1393 if (RT_FAILURE(rc))
1394 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1395
1396 return rc;
1397}
1398
1399/**
1400 * @callback_method_impl{FNDMATRANSFERHANDLER, handlers for DMA transfers}
1401 */
1402static DECLCALLBACK(uint32_t) fdctrl_transfer_handler(PPDMDEVINS pDevIns, void *pvUser,
1403 unsigned uChannel, uint32_t off, uint32_t cb)
1404{
1405 RT_NOREF(pDevIns, off);
1406 fdctrl_t *fdctrl;
1407 fdrive_t *cur_drv;
1408 int rc;
1409 uint32_t len = 0;
1410 uint32_t start_pos, rel_pos;
1411 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1412
1413 fdctrl = (fdctrl_t *)pvUser;
1414 if (fdctrl->msr & FD_MSR_RQM) {
1415 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1416 return 0;
1417 }
1418 cur_drv = get_cur_drv(fdctrl);
1419 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1420 fdctrl->data_dir == FD_DIR_SCANH)
1421 status2 = FD_SR2_SNS;
1422 if (cb > fdctrl->data_len)
1423 cb = fdctrl->data_len;
1424 if (cur_drv->pDrvMedia == NULL)
1425 {
1426 if (fdctrl->data_dir == FD_DIR_WRITE)
1427 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1428 else
1429 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1430 Assert(len == 0);
1431 goto transfer_error;
1432 }
1433
1434 if (cur_drv->ro)
1435 {
1436 if (fdctrl->data_dir == FD_DIR_WRITE || fdctrl->data_dir == FD_DIR_FORMAT)
1437 {
1438 /* Handle readonly medium early, no need to do DMA, touch the
1439 * LED or attempt any writes. A real floppy doesn't attempt
1440 * to write to readonly media either. */
1441 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1442 0x00);
1443 Assert(len == 0);
1444 goto transfer_error;
1445 }
1446 }
1447
1448 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1449 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < cb;) {
1450 len = cb - fdctrl->data_pos;
1451 if (len + rel_pos > FD_SECTOR_LEN)
1452 len = FD_SECTOR_LEN - rel_pos;
1453 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x (%d-0x%08x 0x%08x)\n",
1454 len, cb, fdctrl->data_pos, fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1455 cur_drv->track, cur_drv->sect, fd_sector(cur_drv), fd_sector(cur_drv) * FD_SECTOR_LEN);
1456 if (fdctrl->data_dir != FD_DIR_FORMAT &&
1457 (fdctrl->data_dir != FD_DIR_WRITE ||
1458 len < FD_SECTOR_LEN || rel_pos != 0)) {
1459 /* READ & SCAN commands and realign to a sector for WRITE */
1460 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1461 if (RT_FAILURE(rc))
1462 {
1463 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1464 fd_sector(cur_drv));
1465 /* Sure, image size is too small... */
1466 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1467 }
1468 }
1469 switch (fdctrl->data_dir) {
1470 case FD_DIR_READ:
1471 /* READ commands */
1472 {
1473 uint32_t read;
1474 int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, uChannel,
1475 fdctrl->fifo + rel_pos,
1476 fdctrl->data_pos,
1477 len, &read);
1478 AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1479 }
1480 break;
1481 case FD_DIR_WRITE:
1482 /* WRITE commands */
1483 {
1484 uint32_t written;
1485 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel,
1486 fdctrl->fifo + rel_pos,
1487 fdctrl->data_pos,
1488 len, &written);
1489 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1490 }
1491
1492 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1493 if (RT_FAILURE(rc))
1494 {
1495 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1496 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1497 goto transfer_error;
1498 }
1499 break;
1500 case FD_DIR_FORMAT:
1501 /* FORMAT command */
1502 {
1503 uint8_t eot = fdctrl->fifo[3];
1504 uint8_t filler = fdctrl->fifo[5];
1505 uint32_t written;
1506 int sct;
1507 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel,
1508 fdctrl->fifo + rel_pos,
1509 fdctrl->data_pos,
1510 len, &written);
1511 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1512
1513 /* Fill the entire track with desired data pattern. */
1514 FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1515 eot, filler);
1516 memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1517 for (sct = 0; sct < eot; ++sct)
1518 {
1519 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1520 if (RT_FAILURE(rc))
1521 {
1522 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1523 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1524 goto transfer_error;
1525 }
1526 fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1527 }
1528 }
1529 break;
1530 default:
1531 /* SCAN commands */
1532 {
1533 uint8_t tmpbuf[FD_SECTOR_LEN];
1534 int ret;
1535 uint32_t read;
1536 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, uChannel, tmpbuf,
1537 fdctrl->data_pos, len, &read);
1538 AssertMsg(RT_SUCCESS(rc2), ("DMAReadMemory -> %Rrc2\n", rc2)); NOREF(rc2);
1539 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1540 if (ret == 0) {
1541 status2 = FD_SR2_SEH;
1542 goto end_transfer;
1543 }
1544 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1545 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1546 status2 = 0x00;
1547 goto end_transfer;
1548 }
1549 }
1550 break;
1551 }
1552 fdctrl->data_pos += len;
1553 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1554 if (rel_pos == 0) {
1555 /* Seek to next sector */
1556 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1557 break;
1558 }
1559 }
1560end_transfer:
1561 len = fdctrl->data_pos - start_pos;
1562 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1563 fdctrl->data_pos, len, fdctrl->data_len);
1564 if (fdctrl->data_dir == FD_DIR_SCANE ||
1565 fdctrl->data_dir == FD_DIR_SCANL ||
1566 fdctrl->data_dir == FD_DIR_SCANH)
1567 status2 = FD_SR2_SEH;
1568 if (FD_DID_SEEK(fdctrl->data_state))
1569 status0 |= FD_SR0_SEEK;
1570 fdctrl->data_len -= len;
1571 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1572transfer_error:
1573
1574 return len;
1575}
1576
1577/* Data register : 0x05 */
1578static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1579{
1580 fdrive_t *cur_drv;
1581 uint32_t retval = 0;
1582 unsigned pos;
1583 int rc;
1584
1585 cur_drv = get_cur_drv(fdctrl);
1586 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1587 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1588 FLOPPY_ERROR("controller not ready for reading\n");
1589 return 0;
1590 }
1591 pos = fdctrl->data_pos % FD_SECTOR_LEN;
1592 if (fdctrl->msr & FD_MSR_NONDMA) {
1593 if (pos == 0) {
1594 if (fdctrl->data_pos != 0)
1595 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1596 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1597 fd_sector(cur_drv));
1598 return 0;
1599 }
1600 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1601 if (RT_FAILURE(rc))
1602 {
1603 FLOPPY_DPRINTF("error getting sector %d\n",
1604 fd_sector(cur_drv));
1605 /* Sure, image size is too small... */
1606 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1607 }
1608 }
1609 }
1610 retval = fdctrl->fifo[pos];
1611 if (++fdctrl->data_pos == fdctrl->data_len) {
1612 fdctrl->data_pos = 0;
1613 /* Switch from transfer mode to status mode
1614 * then from status mode to command mode
1615 */
1616 if (fdctrl->msr & FD_MSR_NONDMA) {
1617 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1618 } else {
1619 fdctrl_reset_fifo(fdctrl);
1620 fdctrl_reset_irq(fdctrl);
1621 }
1622 }
1623 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1624
1625 return retval;
1626}
1627
1628static void fdctrl_format_sector(fdctrl_t *fdctrl)
1629{
1630 fdrive_t *cur_drv;
1631 uint8_t kh, kt, ks;
1632 int ok = 0, rc;
1633
1634 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1635 cur_drv = get_cur_drv(fdctrl);
1636 kt = fdctrl->fifo[6];
1637 kh = fdctrl->fifo[7];
1638 ks = fdctrl->fifo[8];
1639 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1640 GET_CUR_DRV(fdctrl), kh, kt, ks,
1641 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1642 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1643 case 2:
1644 /* sect too big */
1645 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1646 fdctrl->fifo[3] = kt;
1647 fdctrl->fifo[4] = kh;
1648 fdctrl->fifo[5] = ks;
1649 return;
1650 case 3:
1651 /* track too big */
1652 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1653 fdctrl->fifo[3] = kt;
1654 fdctrl->fifo[4] = kh;
1655 fdctrl->fifo[5] = ks;
1656 return;
1657 case 4:
1658 /* No seek enabled */
1659 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1660 fdctrl->fifo[3] = kt;
1661 fdctrl->fifo[4] = kh;
1662 fdctrl->fifo[5] = ks;
1663 return;
1664 case 5:
1665 /* No disk in drive */
1666 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1667 fdctrl->fifo[3] = kt;
1668 fdctrl->fifo[4] = kh;
1669 fdctrl->fifo[5] = ks;
1670 return;
1671 case 1:
1672 fdctrl->data_state |= FD_STATE_SEEK;
1673 break;
1674 default:
1675 break;
1676 }
1677 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1678 if (cur_drv->pDrvMedia) {
1679 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1680 if (RT_FAILURE (rc)) {
1681 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1682 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1683 } else {
1684 ok = 1;
1685 }
1686 }
1687 if (ok) {
1688 if (cur_drv->sect == cur_drv->last_sect) {
1689 fdctrl->data_state &= ~FD_STATE_FORMAT;
1690 /* Last sector done */
1691 if (FD_DID_SEEK(fdctrl->data_state))
1692 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1693 else
1694 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1695 } else {
1696 /* More to do */
1697 fdctrl->data_pos = 0;
1698 fdctrl->data_len = 4;
1699 }
1700 }
1701}
1702
1703static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1704{
1705 RT_NOREF(direction);
1706 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1707 fdctrl->fifo[0] = fdctrl->lock << 4;
1708 fdctrl_set_fifo(fdctrl, 1, 0);
1709}
1710
1711static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1712{
1713 RT_NOREF(direction);
1714 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1715
1716 /* Drives position */
1717 fdctrl->fifo[0] = drv0(fdctrl)->track;
1718 fdctrl->fifo[1] = drv1(fdctrl)->track;
1719#if MAX_FD == 4
1720 fdctrl->fifo[2] = drv2(fdctrl)->track;
1721 fdctrl->fifo[3] = drv3(fdctrl)->track;
1722#else
1723 fdctrl->fifo[2] = 0;
1724 fdctrl->fifo[3] = 0;
1725#endif
1726 /* timers */
1727 fdctrl->fifo[4] = fdctrl->timer0;
1728 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1729 fdctrl->fifo[6] = cur_drv->last_sect;
1730 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1731 (cur_drv->perpendicular << 2);
1732 fdctrl->fifo[8] = fdctrl->config;
1733 fdctrl->fifo[9] = fdctrl->precomp_trk;
1734 fdctrl_set_fifo(fdctrl, 10, 0);
1735}
1736
1737static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1738{
1739 RT_NOREF(direction);
1740 /* Controller's version */
1741 fdctrl->fifo[0] = fdctrl->version;
1742 fdctrl_set_fifo(fdctrl, 1, 0);
1743}
1744
1745static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1746{
1747 RT_NOREF(direction);
1748 fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1749 fdctrl_set_fifo(fdctrl, 1, 0);
1750}
1751
1752static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1753{
1754 RT_NOREF(direction);
1755 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1756
1757 /* Drives position */
1758 drv0(fdctrl)->track = fdctrl->fifo[3];
1759 drv1(fdctrl)->track = fdctrl->fifo[4];
1760#if MAX_FD == 4
1761 drv2(fdctrl)->track = fdctrl->fifo[5];
1762 drv3(fdctrl)->track = fdctrl->fifo[6];
1763#endif
1764 /* timers */
1765 fdctrl->timer0 = fdctrl->fifo[7];
1766 fdctrl->timer1 = fdctrl->fifo[8];
1767 cur_drv->last_sect = fdctrl->fifo[9];
1768 fdctrl->lock = fdctrl->fifo[10] >> 7;
1769 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1770 fdctrl->config = fdctrl->fifo[11];
1771 fdctrl->precomp_trk = fdctrl->fifo[12];
1772 fdctrl->pwrd = fdctrl->fifo[13];
1773 fdctrl_reset_fifo(fdctrl);
1774}
1775
1776static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1777{
1778 RT_NOREF(direction);
1779 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1780
1781 fdctrl->fifo[0] = 0;
1782 fdctrl->fifo[1] = 0;
1783 /* Drives position */
1784 fdctrl->fifo[2] = drv0(fdctrl)->track;
1785 fdctrl->fifo[3] = drv1(fdctrl)->track;
1786#if MAX_FD == 4
1787 fdctrl->fifo[4] = drv2(fdctrl)->track;
1788 fdctrl->fifo[5] = drv3(fdctrl)->track;
1789#else
1790 fdctrl->fifo[4] = 0;
1791 fdctrl->fifo[5] = 0;
1792#endif
1793 /* timers */
1794 fdctrl->fifo[6] = fdctrl->timer0;
1795 fdctrl->fifo[7] = fdctrl->timer1;
1796 fdctrl->fifo[8] = cur_drv->last_sect;
1797 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1798 (cur_drv->perpendicular << 2);
1799 fdctrl->fifo[10] = fdctrl->config;
1800 fdctrl->fifo[11] = fdctrl->precomp_trk;
1801 fdctrl->fifo[12] = fdctrl->pwrd;
1802 fdctrl->fifo[13] = 0;
1803 fdctrl->fifo[14] = 0;
1804 fdctrl_set_fifo(fdctrl, 15, 0);
1805}
1806
1807static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1808{
1809 RT_NOREF(direction);
1810 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1811
1812 FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1813
1814 fdctrl->msr &= ~FD_MSR_RQM;
1815 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1816 PDMDevHlpTimerSetMillies(fdctrl->pDevIns, fdctrl->hResultTimer, 1000 / 50);
1817}
1818
1819static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
1820{
1821 RT_NOREF(direction);
1822 fdrive_t *cur_drv;
1823 uint8_t ns, dp;
1824
1825 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1826 cur_drv = get_cur_drv(fdctrl);
1827 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1828 ns = fdctrl->fifo[3];
1829 dp = fdctrl->fifo[5];
1830
1831 FLOPPY_DPRINTF("Format track %d at %d, %d sectors, filler %02x\n",
1832 cur_drv->track, GET_CUR_DRV(fdctrl), ns, dp);
1833 FLOPPY_DPRINTF("CMD:%02x SEL:%02x N:%02x SC:%02x GPL:%02x D:%02x\n",
1834 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1835 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5]);
1836
1837 /* Since we cannot actually format anything, we have to make sure that
1838 * whatever new format the guest is trying to establish matches the
1839 * existing format of the medium.
1840 */
1841 if (cur_drv->last_sect != ns || fdctrl->fifo[2] != 2)
1842 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_NW, 0);
1843 else
1844 {
1845 cur_drv->bps = fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1846 cur_drv->last_sect = ns;
1847
1848 fdctrl_start_format(fdctrl);
1849 }
1850}
1851
1852static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
1853{
1854 RT_NOREF(direction);
1855 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1856 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1857 if (fdctrl->fifo[2] & 1)
1858 fdctrl->dor &= ~FD_DOR_DMAEN;
1859 else
1860 fdctrl->dor |= FD_DOR_DMAEN;
1861 /* No result back */
1862 fdctrl_reset_fifo(fdctrl);
1863}
1864
1865static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
1866{
1867 RT_NOREF(direction);
1868 fdrive_t *cur_drv;
1869
1870 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1871 cur_drv = get_cur_drv(fdctrl);
1872 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1873 /* 1 Byte status back */
1874 fdctrl->fifo[0] = (cur_drv->ro << 6) |
1875 (cur_drv->track == 0 ? 0x10 : 0x00) |
1876 (cur_drv->head << 2) |
1877 GET_CUR_DRV(fdctrl) |
1878 0x28;
1879 fdctrl_set_fifo(fdctrl, 1, 0);
1880}
1881
1882static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
1883{
1884 RT_NOREF(direction);
1885 fdrive_t *cur_drv;
1886 uint8_t st0;
1887
1888 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1889 cur_drv = get_cur_drv(fdctrl);
1890 fd_recalibrate(cur_drv);
1891 fdctrl_reset_fifo(fdctrl);
1892 st0 = FD_SR0_SEEK | GET_CUR_DRV(fdctrl);
1893 /* No drive means no TRK0 signal. */
1894 if (cur_drv->drive == FDRIVE_DRV_NONE)
1895 st0 |= FD_SR0_ABNTERM | FD_SR0_EQPMT;
1896 /* Raise Interrupt */
1897 fdctrl_raise_irq(fdctrl, st0);
1898}
1899
1900static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
1901{
1902 RT_NOREF(direction);
1903 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1904
1905 FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
1906 if(fdctrl->reset_sensei > 0) {
1907 fdctrl->fifo[0] =
1908 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1909 fdctrl->reset_sensei--;
1910 } else {
1911 /* XXX: status0 handling is broken for read/write
1912 commands, so we do this hack. It should be suppressed
1913 ASAP */
1914 fdctrl->fifo[0] =
1915 FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1916 /* Hack to preserve SR0 on equipment check failures (no drive). */
1917 if (fdctrl->status0 & FD_SR0_EQPMT)
1918 fdctrl->fifo[0] = fdctrl->status0;
1919 }
1920
1921 fdctrl->fifo[1] = cur_drv->track;
1922 fdctrl_set_fifo(fdctrl, 2, 0);
1923 FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1924 fdctrl->status0 = FD_SR0_RDYCHG;
1925}
1926
1927static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
1928{
1929 RT_NOREF(direction);
1930 fdrive_t *cur_drv;
1931
1932 FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
1933 fdctrl->fifo[1], fdctrl->fifo[2]);
1934
1935 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1936 cur_drv = get_cur_drv(fdctrl);
1937 fdctrl_reset_fifo(fdctrl);
1938
1939 /* The seek command just sends step pulses to the drive and doesn't care if
1940 * there's a medium inserted or if it's banging the head against the drive.
1941 */
1942 cur_drv->track = fdctrl->fifo[2];
1943 cur_drv->ltrk = cur_drv->track;
1944 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1945 /* Raise Interrupt */
1946 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK | GET_CUR_DRV(fdctrl));
1947}
1948
1949static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
1950{
1951 RT_NOREF(direction);
1952 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1953
1954 if (fdctrl->fifo[1] & 0x80)
1955 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1956 /* No result back */
1957 fdctrl_reset_fifo(fdctrl);
1958}
1959
1960static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
1961{
1962 RT_NOREF(direction);
1963 fdctrl->config = fdctrl->fifo[2];
1964 fdctrl->precomp_trk = fdctrl->fifo[3];
1965 /* No result back */
1966 fdctrl_reset_fifo(fdctrl);
1967}
1968
1969static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
1970{
1971 RT_NOREF(direction);
1972 fdctrl->pwrd = fdctrl->fifo[1];
1973 fdctrl->fifo[0] = fdctrl->fifo[1];
1974 fdctrl_set_fifo(fdctrl, 1, 0);
1975}
1976
1977static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
1978{
1979 RT_NOREF(direction);
1980 /* No result back */
1981 fdctrl_reset_fifo(fdctrl);
1982}
1983
1984static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
1985{
1986 RT_NOREF(direction);
1987 /* fdrive_t *cur_drv = get_cur_drv(fdctrl); - unused */
1988
1989 /* This command takes a variable number of parameters. It can be terminated
1990 * at any time if the high bit of a parameter is set. Once there are 6 bytes
1991 * in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
1992 */
1993 if (fdctrl->data_len == 7 || (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
1994
1995 /* Command parameters done */
1996 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1997 /* Data is echoed, but not stored! */
1998 fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
1999 fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
2000 fdctrl->fifo[2] = 0;
2001 fdctrl->fifo[3] = 0;
2002 fdctrl_set_fifo(fdctrl, 4, 0);
2003 } else {
2004 fdctrl_reset_fifo(fdctrl);
2005 }
2006 } else
2007 fdctrl->data_len++; /* Wait for another byte. */
2008}
2009
2010static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2011{
2012 RT_NOREF(direction);
2013 fdrive_t *cur_drv;
2014
2015 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2016 cur_drv = get_cur_drv(fdctrl);
2017 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2018 cur_drv->track = cur_drv->max_track - 1;
2019 } else {
2020 cur_drv->track += fdctrl->fifo[2];
2021 }
2022 fdctrl_reset_fifo(fdctrl);
2023 /* Raise Interrupt */
2024 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2025}
2026
2027static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2028{
2029 RT_NOREF(direction);
2030 fdrive_t *cur_drv;
2031
2032 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2033 cur_drv = get_cur_drv(fdctrl);
2034 if (fdctrl->fifo[2] > cur_drv->track) {
2035 cur_drv->track = 0;
2036 } else {
2037 cur_drv->track -= fdctrl->fifo[2];
2038 }
2039 fdctrl_reset_fifo(fdctrl);
2040 /* Raise Interrupt */
2041 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2042}
2043
2044static const struct {
2045 uint8_t value;
2046 uint8_t mask;
2047 const char* name;
2048 int parameters;
2049 void (*handler)(fdctrl_t *fdctrl, int direction);
2050 int direction;
2051} handlers[] = {
2052 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2053 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2054 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2055 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2056 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2057 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2058 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2059 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2060 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2061 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2062 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2063 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2064 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2065 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2066 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2067 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2068 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2069 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2070 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2071 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2072 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2073 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2074 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2075 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2076 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2077 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2078 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2079 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2080 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2081 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2082 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2083 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2084};
2085/* Associate command to an index in the 'handlers' array */
2086static uint8_t command_to_handler[256];
2087
2088static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2089{
2090 fdrive_t *cur_drv;
2091 int pos;
2092
2093 cur_drv = get_cur_drv(fdctrl);
2094 /* Reset mode */
2095 if (!(fdctrl->dor & FD_DOR_nRESET)) {
2096 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2097 return;
2098 }
2099 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
2100 FLOPPY_ERROR("controller not ready for writing\n");
2101 return;
2102 }
2103 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2104 /* Is it write command time ? */
2105 if (fdctrl->msr & FD_MSR_NONDMA) {
2106 /* FIFO data write */
2107 pos = fdctrl->data_pos++;
2108 pos %= FD_SECTOR_LEN;
2109 fdctrl->fifo[pos] = value;
2110 if (pos == FD_SECTOR_LEN - 1 ||
2111 fdctrl->data_pos == fdctrl->data_len) {
2112 blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2113 }
2114 /* Switch from transfer mode to status mode
2115 * then from status mode to command mode
2116 */
2117 if (fdctrl->data_pos == fdctrl->data_len)
2118 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2119 return;
2120 }
2121 if (fdctrl->data_pos == 0) {
2122 /* Command */
2123 fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2124 pos = command_to_handler[value & 0xff];
2125 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2126 fdctrl->data_len = handlers[pos].parameters + 1;
2127 fdctrl->msr |= FD_MSR_CMDBUSY;
2128 }
2129
2130 FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2131 fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;
2132 if (fdctrl->data_pos == fdctrl->data_len) {
2133 /* We now have all parameters
2134 * and will be able to treat the command
2135 */
2136 if (fdctrl->data_state & FD_STATE_FORMAT) {
2137 fdctrl_format_sector(fdctrl);
2138 return;
2139 }
2140
2141 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2142 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2143 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2144 }
2145}
2146
2147
2148/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2149
2150/**
2151 * @callback_method_impl{FNTMTIMERDEV}
2152 */
2153static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2154{
2155 fdctrl_t *fdctrl = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2156 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2157 RT_NOREF(pTimer, pvUser);
2158
2159 /* Pretend we are spinning.
2160 * This is needed for Coherent, which uses READ ID to check for
2161 * sector interleaving.
2162 */
2163 if (cur_drv->last_sect != 0) {
2164 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2165 }
2166 /* READ_ID can't automatically succeed! */
2167 if (!cur_drv->max_track) {
2168 FLOPPY_DPRINTF("read id when no disk in drive\n");
2169 /// @todo This is wrong! Command should not complete.
2170 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2171 } else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2172 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2173 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2174 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2175 } else if (cur_drv->track >= cur_drv->max_track) {
2176 FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2177 cur_drv->track, cur_drv->max_track);
2178 cur_drv->ltrk = 0;
2179 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2180 }
2181 else
2182 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2183}
2184
2185
2186/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2187
2188/**
2189 * @callback_method_impl{FNIOMIOPORTNEWOUT, Handling 0x3f0 accesses.}
2190 */
2191static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort0Write(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
2192{
2193 RT_NOREF(pvUser);
2194
2195 if (cb == 1)
2196 fdctrl_write(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort, u32);
2197 else
2198 ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
2199 return VINF_SUCCESS;
2200}
2201
2202
2203/**
2204 * @callback_method_impl{FNIOMIOPORTNEWIN, Handling 0x3f0 accesses.}
2205 */
2206static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort0Read(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb)
2207{
2208 RT_NOREF(pvUser);
2209
2210 if (cb == 1)
2211 {
2212 *pu32 = fdctrl_read(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort);
2213 return VINF_SUCCESS;
2214 }
2215 return VERR_IOM_IOPORT_UNUSED;
2216}
2217
2218
2219/**
2220 * @callback_method_impl{FNIOMIOPORTNEWOUT, Handling 0x3f1..0x3f5 accesses.}
2221 */
2222static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort1Write(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
2223{
2224 RT_NOREF(pvUser);
2225
2226 if (cb == 1)
2227 fdctrl_write(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort + 1, u32);
2228 else
2229 ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
2230 return VINF_SUCCESS;
2231}
2232
2233
2234/**
2235 * @callback_method_impl{FNIOMIOPORTNEWIN, Handling 0x3f1..0x3f5 accesses.}
2236 */
2237static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort1Read(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb)
2238{
2239 RT_NOREF(pvUser);
2240
2241 if (cb == 1)
2242 {
2243 *pu32 = fdctrl_read(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), offPort + 1);
2244 return VINF_SUCCESS;
2245 }
2246 return VERR_IOM_IOPORT_UNUSED;
2247}
2248
2249
2250/**
2251 * @callback_method_impl{FNIOMIOPORTNEWOUT, Handling 0x3f7 access.}
2252 */
2253static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort2Write(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
2254{
2255 RT_NOREF(offPort, pvUser);
2256 Assert(offPort == 0);
2257
2258 if (cb == 1)
2259 fdctrl_write(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), 7, u32);
2260 else
2261 ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
2262 return VINF_SUCCESS;
2263}
2264
2265
2266/**
2267 * @callback_method_impl{FNIOMIOPORTNEWIN, Handling 0x3f7 access.}
2268 */
2269static DECLCALLBACK(VBOXSTRICTRC) fdcIoPort2Read(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb)
2270{
2271 RT_NOREF(pvUser, offPort);
2272 Assert(offPort == 0);
2273
2274 if (cb == 1)
2275 {
2276 *pu32 = fdctrl_read(PDMDEVINS_2_DATA(pDevIns, fdctrl_t *), 7);
2277 return VINF_SUCCESS;
2278 }
2279 return VERR_IOM_IOPORT_UNUSED;
2280}
2281
2282
2283/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2284
2285/**
2286 * @callback_method_impl{FNSSMDEVSAVEEXEC}
2287 */
2288static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2289{
2290 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2291 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2292 unsigned int i;
2293
2294 /* Save the FDC I/O registers... */
2295 pHlp->pfnSSMPutU8(pSSM, pThis->sra);
2296 pHlp->pfnSSMPutU8(pSSM, pThis->srb);
2297 pHlp->pfnSSMPutU8(pSSM, pThis->dor);
2298 pHlp->pfnSSMPutU8(pSSM, pThis->tdr);
2299 pHlp->pfnSSMPutU8(pSSM, pThis->dsr);
2300 pHlp->pfnSSMPutU8(pSSM, pThis->msr);
2301 /* ...the status registers... */
2302 pHlp->pfnSSMPutU8(pSSM, pThis->status0);
2303 pHlp->pfnSSMPutU8(pSSM, pThis->status1);
2304 pHlp->pfnSSMPutU8(pSSM, pThis->status2);
2305 /* ...the command FIFO... */
2306 pHlp->pfnSSMPutU32(pSSM, sizeof(pThis->fifo));
2307 pHlp->pfnSSMPutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2308 pHlp->pfnSSMPutU32(pSSM, pThis->data_pos);
2309 pHlp->pfnSSMPutU32(pSSM, pThis->data_len);
2310 pHlp->pfnSSMPutU8(pSSM, pThis->data_state);
2311 pHlp->pfnSSMPutU8(pSSM, pThis->data_dir);
2312 /* ...and miscellaneous internal FDC state. */
2313 pHlp->pfnSSMPutU8(pSSM, pThis->reset_sensei);
2314 pHlp->pfnSSMPutU8(pSSM, pThis->eot);
2315 pHlp->pfnSSMPutU8(pSSM, pThis->timer0);
2316 pHlp->pfnSSMPutU8(pSSM, pThis->timer1);
2317 pHlp->pfnSSMPutU8(pSSM, pThis->precomp_trk);
2318 pHlp->pfnSSMPutU8(pSSM, pThis->config);
2319 pHlp->pfnSSMPutU8(pSSM, pThis->lock);
2320 pHlp->pfnSSMPutU8(pSSM, pThis->pwrd);
2321 pHlp->pfnSSMPutU8(pSSM, pThis->version);
2322
2323 /* Save the number of drives and per-drive state. Note that the media
2324 * states will be updated in fd_revalidate() and need not be saved.
2325 */
2326 pHlp->pfnSSMPutU8(pSSM, pThis->num_floppies);
2327 Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2328 for (i = 0; i < pThis->num_floppies; ++i)
2329 {
2330 fdrive_t *d = &pThis->drives[i];
2331
2332 pHlp->pfnSSMPutMem(pSSM, &d->Led, sizeof(d->Led));
2333 pHlp->pfnSSMPutU32(pSSM, d->drive);
2334 pHlp->pfnSSMPutU8(pSSM, d->dsk_chg);
2335 pHlp->pfnSSMPutU8(pSSM, d->perpendicular);
2336 pHlp->pfnSSMPutU8(pSSM, d->head);
2337 pHlp->pfnSSMPutU8(pSSM, d->track);
2338 pHlp->pfnSSMPutU8(pSSM, d->sect);
2339 }
2340 return pHlp->pfnTimerSave(pDevIns, pThis->hResultTimer, pSSM);
2341}
2342
2343
2344/**
2345 * @callback_method_impl{FNSSMDEVLOADEXEC}
2346 */
2347static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2348{
2349 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2350 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2351 unsigned int i;
2352 uint32_t val32;
2353 uint8_t val8;
2354 int rc;
2355
2356 if (uVersion > FDC_SAVESTATE_CURRENT)
2357 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2358 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2359
2360 /* The old saved state was significantly different. However, we can get
2361 * back most of the controller state and fix the rest by pretending the
2362 * disk in the drive (if any) has been replaced. At any rate there should
2363 * be no difficulty unless the state was saved during a floppy operation.
2364 */
2365 if (uVersion == FDC_SAVESTATE_OLD)
2366 {
2367 /* First verify a few assumptions. */
2368 AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2369 ("The size of FIFO in saved state doesn't match!\n"),
2370 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2371 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2372 ("The number of drives in old saved state doesn't match!\n"),
2373 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2374 /* Now load the old state. */
2375 pHlp->pfnSSMGetU8(pSSM, &pThis->version);
2376 /* Toss IRQ level, DMA channel, I/O base, and state. */
2377 pHlp->pfnSSMGetU8(pSSM, &val8);
2378 pHlp->pfnSSMGetU8(pSSM, &val8);
2379 pHlp->pfnSSMGetU32(pSSM, &val32);
2380 pHlp->pfnSSMGetU8(pSSM, &val8);
2381 /* Translate dma_en. */
2382 rc = pHlp->pfnSSMGetU8(pSSM, &val8);
2383 AssertRCReturn(rc, rc);
2384 if (val8)
2385 pThis->dor |= FD_DOR_DMAEN;
2386 pHlp->pfnSSMGetU8(pSSM, &pThis->cur_drv);
2387 /* Translate bootsel. */
2388 rc = pHlp->pfnSSMGetU8(pSSM, &val8);
2389 AssertRCReturn(rc, rc);
2390 pThis->tdr |= val8 << 2;
2391 pHlp->pfnSSMGetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2392 pHlp->pfnSSMGetU32(pSSM, &pThis->data_pos);
2393 pHlp->pfnSSMGetU32(pSSM, &pThis->data_len);
2394 pHlp->pfnSSMGetU8(pSSM, &pThis->data_state);
2395 pHlp->pfnSSMGetU8(pSSM, &pThis->data_dir);
2396 pHlp->pfnSSMGetU8(pSSM, &pThis->status0);
2397 pHlp->pfnSSMGetU8(pSSM, &pThis->eot);
2398 pHlp->pfnSSMGetU8(pSSM, &pThis->timer0);
2399 pHlp->pfnSSMGetU8(pSSM, &pThis->timer1);
2400 pHlp->pfnSSMGetU8(pSSM, &pThis->precomp_trk);
2401 pHlp->pfnSSMGetU8(pSSM, &pThis->config);
2402 pHlp->pfnSSMGetU8(pSSM, &pThis->lock);
2403 pHlp->pfnSSMGetU8(pSSM, &pThis->pwrd);
2404
2405 for (i = 0; i < 2; ++i)
2406 {
2407 fdrive_t *d = &pThis->drives[i];
2408
2409 pHlp->pfnSSMGetMem(pSSM, &d->Led, sizeof (d->Led));
2410 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2411 d->drive = (fdrive_type_t)val32;
2412 AssertRCReturn(rc, rc);
2413 pHlp->pfnSSMGetU32(pSSM, &val32); /* Toss drflags */
2414 pHlp->pfnSSMGetU8(pSSM, &d->perpendicular);
2415 pHlp->pfnSSMGetU8(pSSM, &d->head);
2416 pHlp->pfnSSMGetU8(pSSM, &d->track);
2417 pHlp->pfnSSMGetU8(pSSM, &d->sect);
2418 pHlp->pfnSSMGetU8(pSSM, &val8); /* Toss dir, rw */
2419 pHlp->pfnSSMGetU8(pSSM, &val8);
2420 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2421 AssertRCReturn(rc, rc);
2422 d->flags = (fdrive_flags_t)val32;
2423 pHlp->pfnSSMGetU8(pSSM, &d->last_sect);
2424 pHlp->pfnSSMGetU8(pSSM, &d->max_track);
2425 pHlp->pfnSSMGetU16(pSSM, &d->bps);
2426 pHlp->pfnSSMGetU8(pSSM, &d->ro);
2427 }
2428 }
2429 else /* New state - straightforward. */
2430 {
2431 Assert(uVersion == FDC_SAVESTATE_CURRENT);
2432 /* Load the FDC I/O registers... */
2433 pHlp->pfnSSMGetU8(pSSM, &pThis->sra);
2434 pHlp->pfnSSMGetU8(pSSM, &pThis->srb);
2435 pHlp->pfnSSMGetU8(pSSM, &pThis->dor);
2436 pHlp->pfnSSMGetU8(pSSM, &pThis->tdr);
2437 pHlp->pfnSSMGetU8(pSSM, &pThis->dsr);
2438 pHlp->pfnSSMGetU8(pSSM, &pThis->msr);
2439 /* ...the status registers... */
2440 pHlp->pfnSSMGetU8(pSSM, &pThis->status0);
2441 pHlp->pfnSSMGetU8(pSSM, &pThis->status1);
2442 pHlp->pfnSSMGetU8(pSSM, &pThis->status2);
2443 /* ...the command FIFO, if the size matches... */
2444 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2445 AssertRCReturn(rc, rc);
2446 AssertMsgReturn(sizeof(pThis->fifo) == val32,
2447 ("The size of FIFO in saved state doesn't match!\n"),
2448 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2449 pHlp->pfnSSMGetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2450 pHlp->pfnSSMGetU32(pSSM, &pThis->data_pos);
2451 pHlp->pfnSSMGetU32(pSSM, &pThis->data_len);
2452 pHlp->pfnSSMGetU8(pSSM, &pThis->data_state);
2453 pHlp->pfnSSMGetU8(pSSM, &pThis->data_dir);
2454 /* ...and miscellaneous internal FDC state. */
2455 pHlp->pfnSSMGetU8(pSSM, &pThis->reset_sensei);
2456 pHlp->pfnSSMGetU8(pSSM, &pThis->eot);
2457 pHlp->pfnSSMGetU8(pSSM, &pThis->timer0);
2458 pHlp->pfnSSMGetU8(pSSM, &pThis->timer1);
2459 pHlp->pfnSSMGetU8(pSSM, &pThis->precomp_trk);
2460 pHlp->pfnSSMGetU8(pSSM, &pThis->config);
2461 pHlp->pfnSSMGetU8(pSSM, &pThis->lock);
2462 pHlp->pfnSSMGetU8(pSSM, &pThis->pwrd);
2463 pHlp->pfnSSMGetU8(pSSM, &pThis->version);
2464
2465 /* Validate the number of drives. */
2466 rc = pHlp->pfnSSMGetU8(pSSM, &pThis->num_floppies);
2467 AssertRCReturn(rc, rc);
2468 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2469 ("The number of drives in saved state doesn't match!\n"),
2470 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2471
2472 /* Load the per-drive state. */
2473 for (i = 0; i < pThis->num_floppies; ++i)
2474 {
2475 fdrive_t *d = &pThis->drives[i];
2476
2477 pHlp->pfnSSMGetMem(pSSM, &d->Led, sizeof(d->Led));
2478 rc = pHlp->pfnSSMGetU32(pSSM, &val32);
2479 AssertRCReturn(rc, rc);
2480 d->drive = (fdrive_type_t)val32;
2481 pHlp->pfnSSMGetU8(pSSM, &d->dsk_chg);
2482 pHlp->pfnSSMGetU8(pSSM, &d->perpendicular);
2483 pHlp->pfnSSMGetU8(pSSM, &d->head);
2484 pHlp->pfnSSMGetU8(pSSM, &d->track);
2485 pHlp->pfnSSMGetU8(pSSM, &d->sect);
2486 }
2487 }
2488 return pHlp->pfnTimerLoad(pDevIns, pThis->hResultTimer, pSSM);
2489}
2490
2491
2492/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2493
2494/**
2495 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2496 */
2497static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2498{
2499 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2500 LogFlow(("fdMountNotify:\n"));
2501 fd_revalidate(pDrv);
2502}
2503
2504
2505/**
2506 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2507 */
2508static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2509{
2510 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2511 LogFlow(("fdUnmountNotify:\n"));
2512 fd_revalidate(pDrv);
2513}
2514
2515
2516/**
2517 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2518 */
2519static DECLCALLBACK(void *) fdQueryInterface (PPDMIBASE pInterface, const char *pszIID)
2520{
2521 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2522
2523 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2524 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pDrv->IPort);
2525 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2526 return NULL;
2527}
2528
2529
2530/**
2531 * @interface_method_impl{PDMIMEDIAPORT,pfnQueryDeviceLocation}
2532 */
2533static DECLCALLBACK(int) fdQueryDeviceLocation(PPDMIMEDIAPORT pInterface, const char **ppcszController,
2534 uint32_t *piInstance, uint32_t *piLUN)
2535{
2536 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IPort);
2537 PPDMDEVINS pDevIns = pDrv->pDevIns;
2538
2539 AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2540 AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2541 AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2542
2543 *ppcszController = pDevIns->pReg->szName;
2544 *piInstance = pDevIns->iInstance;
2545 *piLUN = pDrv->iLUN;
2546
2547 return VINF_SUCCESS;
2548}
2549
2550/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2551
2552/**
2553 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2554 */
2555static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2556{
2557 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2558 if (iLUN < RT_ELEMENTS(pThis->drives)) {
2559 *ppLed = &pThis->drives[iLUN].Led;
2560 Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2561 return VINF_SUCCESS;
2562 }
2563 return VERR_PDM_LUN_NOT_FOUND;
2564}
2565
2566
2567/**
2568 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2569 */
2570static DECLCALLBACK(void *) fdcStatusQueryInterface(PPDMIBASE pInterface, const char *pszIID)
2571{
2572 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2573
2574 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2575 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2576 return NULL;
2577}
2578
2579
2580/**
2581 * Configure a drive.
2582 *
2583 * @returns VBox status code.
2584 * @param drv The drive in question.
2585 * @param pDevIns The driver instance.
2586 * @param fInit Set if we're at init time and can change the drive type.
2587 */
2588static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2589{
2590 static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2591 int rc;
2592
2593 /*
2594 * Reset the LED just to be on the safe side.
2595 */
2596 Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2597 Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2598 drv->Led.Actual.u32 = 0;
2599 drv->Led.Asserted.u32 = 0;
2600
2601 /*
2602 * Try attach the block device and get the interfaces.
2603 */
2604 rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2605 if (RT_SUCCESS (rc)) {
2606 drv->pDrvMedia = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMEDIA);
2607 if (drv->pDrvMedia) {
2608 drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2609 if (drv->pDrvMount) {
2610 fd_init(drv, fInit);
2611 } else {
2612 AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2613 rc = VERR_PDM_MISSING_INTERFACE;
2614 }
2615
2616 } else {
2617 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2618 rc = VERR_PDM_MISSING_INTERFACE;
2619 }
2620 } else {
2621 AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2622 ("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2623 switch (rc) {
2624 case VERR_ACCESS_DENIED:
2625 /* Error already cached by DrvHostBase */
2626 break;
2627 case VERR_PDM_NO_ATTACHED_DRIVER:
2628 /* Legal on architectures without a floppy controller */
2629 break;
2630 default:
2631 rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2632 N_ ("The floppy controller cannot attach to the floppy drive"));
2633 break;
2634 }
2635 }
2636
2637 if (RT_FAILURE (rc)) {
2638 drv->pDrvBase = NULL;
2639 drv->pDrvMedia = NULL;
2640 drv->pDrvMount = NULL;
2641 }
2642 LogFlow (("fdConfig: returns %Rrc\n", rc));
2643 return rc;
2644}
2645
2646
2647/**
2648 * @interface_method_impl{PDMDEVREG,pfnAttach}
2649 *
2650 * This is called when we change block driver for a floppy drive.
2651 */
2652static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2653{
2654 fdctrl_t *fdctrl = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2655 fdrive_t *drv;
2656 int rc;
2657 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2658
2659 AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2660 ("The FDC device does not support hotplugging\n"),
2661 VERR_INVALID_PARAMETER);
2662
2663 /*
2664 * Validate.
2665 */
2666 if (iLUN >= 2) {
2667 AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2668 iLUN));
2669 return VERR_PDM_DEVINS_NO_ATTACH;
2670 }
2671
2672 /*
2673 * Locate the drive and stuff.
2674 */
2675 drv = &fdctrl->drives[iLUN];
2676
2677 /* the usual paranoia */
2678 AssertRelease (!drv->pDrvBase);
2679 AssertRelease (!drv->pDrvMedia);
2680 AssertRelease (!drv->pDrvMount);
2681
2682 rc = fdConfig (drv, pDevIns, false /*fInit*/);
2683 AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2684 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", iLUN, rc));
2685 if (RT_SUCCESS(rc)) {
2686 fd_revalidate (drv);
2687 }
2688
2689 LogFlow (("floppyAttach: returns %Rrc\n", rc));
2690 return rc;
2691}
2692
2693
2694/**
2695 * @interface_method_impl{PDMDEVREG,pfnDetach}
2696 *
2697 * The floppy drive has been temporarily 'unplugged'.
2698 */
2699static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2700{
2701 RT_NOREF(fFlags);
2702 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2703 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2704
2705 switch (iLUN)
2706 {
2707 case 0:
2708 case 1:
2709 {
2710 fdrive_t *drv = &pThis->drives[iLUN];
2711 drv->pDrvBase = NULL;
2712 drv->pDrvMedia = NULL;
2713 drv->pDrvMount = NULL;
2714 break;
2715 }
2716
2717 default:
2718 AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2719 break;
2720 }
2721}
2722
2723
2724/**
2725 * @interface_method_impl{PDMDEVREG,pfnReset}
2726 *
2727 * I haven't check the specs on what's supposed to happen on reset, but we
2728 * should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2729 * at wrong time like we do if this was all void.
2730 */
2731static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2732{
2733 fdctrl_t *pThis = PDMDEVINS_2_DATA (pDevIns, fdctrl_t *);
2734 unsigned i;
2735 LogFlow (("fdcReset:\n"));
2736
2737 fdctrl_reset(pThis, 0);
2738
2739 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2740 fd_revalidate(&pThis->drives[i]);
2741}
2742
2743
2744/**
2745 * @interface_method_impl{PDMDEVREG,pfnConstruct}
2746 */
2747static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2748{
2749 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2750 fdctrl_t *pThis = PDMDEVINS_2_DATA(pDevIns, fdctrl_t *);
2751 PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2752 int rc;
2753
2754 RT_NOREF(iInstance);
2755 Assert(iInstance == 0);
2756
2757 /*
2758 * Validate configuration.
2759 */
2760 PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IRQ|DMA|MemMapped|IOBase|StatusA", "");
2761
2762 /*
2763 * Read the configuration.
2764 */
2765 rc = pHlp->pfnCFGMQueryU8Def(pCfg, "IRQ", &pThis->irq_lvl, 6);
2766 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2767
2768 rc = pHlp->pfnCFGMQueryU8Def(pCfg, "DMA", &pThis->dma_chann, 2);
2769 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2770
2771 rc = pHlp->pfnCFGMQueryU16Def(pCfg, "IOBase", &pThis->io_base, 0x3f0);
2772 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2773
2774 bool fMemMapped;
2775 rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "MemMapped", &fMemMapped, false);
2776 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2777
2778 bool fStatusA;
2779 rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "StatusA", &fStatusA, false);
2780 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value fStatusA rc=%Rrc\n", rc), rc);
2781
2782 /*
2783 * Initialize data.
2784 */
2785 LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", pThis->irq_lvl, pThis->dma_chann, pThis->io_base));
2786 pThis->pDevIns = pDevIns;
2787 pThis->version = 0x90; /* Intel 82078 controller */
2788 pThis->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2789 pThis->num_floppies = MAX_FD;
2790 pThis->hIoPorts0 = NIL_IOMMMIOHANDLE;
2791 pThis->hIoPorts1 = NIL_IOMMMIOHANDLE;
2792 pThis->hIoPorts2 = NIL_IOMMMIOHANDLE;
2793
2794 /* Fill 'command_to_handler' lookup table */
2795 for (int ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2796 for (unsigned j = 0; j < sizeof(command_to_handler); j++)
2797 if ((j & handlers[ii].mask) == handlers[ii].value)
2798 command_to_handler[j] = ii;
2799
2800 pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2801 pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2802
2803 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2804 {
2805 fdrive_t *pDrv = &pThis->drives[i];
2806
2807 pDrv->drive = FDRIVE_DRV_NONE;
2808 pDrv->iLUN = i;
2809 pDrv->pDevIns = pDevIns;
2810
2811 pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2812 pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2813 pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2814 pDrv->IPort.pfnQueryDeviceLocation = fdQueryDeviceLocation;
2815 pDrv->Led.u32Magic = PDMLED_MAGIC;
2816 }
2817
2818 /*
2819 * Create the FDC timer.
2820 */
2821 rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2822 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->hResultTimer);
2823 AssertRCReturn(rc, rc);
2824
2825 /*
2826 * Register DMA channel.
2827 */
2828 if (pThis->dma_chann != 0xff)
2829 {
2830 rc = PDMDevHlpDMARegister(pDevIns, pThis->dma_chann, &fdctrl_transfer_handler, pThis);
2831 AssertRCReturn(rc, rc);
2832 }
2833
2834 /*
2835 * IO / MMIO.
2836 *
2837 * We must skip I/O port 0x3f6 as it is the ATA alternate status register.
2838 * Why we skip registering status register A, though, isn't as clear.
2839 */
2840 if (!fMemMapped)
2841 {
2842 static const IOMIOPORTDESC s_aDescs[] =
2843 {
2844 { "SRA", NULL, "Status register A", NULL },
2845 { "SRB", NULL, "Status register B", NULL },
2846 { "DOR", "DOR", "Digital output register", "Digital output register"},
2847 { "TDR", "TDR", "Tape driver register", "Tape driver register"},
2848 { "MSR", "DSR", "Main status register", "Datarate select register" },
2849 { "FIFO", "FIFO", "Data FIFO", "Data FIFO" },
2850 { "ATA", "ATA", NULL, NULL },
2851 { "DIR", "CCR", "Digital input register", "Configuration control register"},
2852 { NULL, NULL, NULL, NULL }
2853 };
2854
2855 /* 0x3f0 */
2856 if (fStatusA)
2857 {
2858 rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pThis->io_base, 1 /*cPorts*/, fdcIoPort0Write, fdcIoPort0Read,
2859 "FDC-SRA", s_aDescs, &pThis->hIoPorts0);
2860 AssertRCReturn(rc, rc);
2861 }
2862
2863 /* 0x3f1..0x3f5 */
2864 rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pThis->io_base + 0x1, 5, fdcIoPort1Write, fdcIoPort1Read,
2865 "FDC#1", &s_aDescs[1], &pThis->hIoPorts1);
2866 AssertRCReturn(rc, rc);
2867
2868 /* 0x3f7 */
2869 rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pThis->io_base + 0x7, 1, fdcIoPort2Write, fdcIoPort2Read,
2870 "FDC#2", &s_aDescs[7], &pThis->hIoPorts2);
2871 AssertRCReturn(rc, rc);
2872 }
2873 else
2874 AssertMsgFailedReturn(("Memory mapped floppy not support by now\n"), VERR_NOT_SUPPORTED);
2875
2876 /*
2877 * Register the saved state data unit.
2878 */
2879 rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
2880 AssertRCReturn(rc, rc);
2881
2882 /*
2883 * Attach the status port (optional).
2884 */
2885 PPDMIBASE pBase;
2886 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
2887 if (RT_SUCCESS (rc))
2888 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
2889 else
2890 AssertMsgReturn(rc == VERR_PDM_NO_ATTACHED_DRIVER, ("Failed to attach to status driver. rc=%Rrc\n", rc), rc);
2891
2892 /*
2893 * Initialize drives.
2894 */
2895 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2896 {
2897 rc = fdConfig(&pThis->drives[i], pDevIns, true /*fInit*/);
2898 AssertMsgReturn(RT_SUCCESS(rc) || rc == VERR_PDM_NO_ATTACHED_DRIVER,
2899 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", i, rc),
2900 rc);
2901 }
2902
2903 fdctrl_reset(pThis, 0);
2904
2905 for (unsigned i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2906 fd_revalidate(&pThis->drives[i]);
2907
2908 return VINF_SUCCESS;
2909}
2910
2911
2912/**
2913 * The device registration structure.
2914 */
2915const PDMDEVREG g_DeviceFloppyController =
2916{
2917 /* .u32Version = */ PDM_DEVREG_VERSION,
2918 /* .uReserved0 = */ 0,
2919 /* .szName = */ "i82078",
2920 /* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_NEW_STYLE,
2921 /* .fClass = */ PDM_DEVREG_CLASS_STORAGE,
2922 /* .cMaxInstances = */ 1,
2923 /* .uSharedVersion = */ 42,
2924 /* .cbInstanceShared = */ sizeof(fdctrl_t),
2925 /* .cbInstanceCC = */ 0,
2926 /* .cbInstanceRC = */ 0,
2927 /* .cMaxPciDevices = */ 0,
2928 /* .cMaxMsixVectors = */ 0,
2929 /* .pszDescription = */ "Floppy drive controller (Intel 82078)",
2930#if defined(IN_RING3)
2931 /* .pszRCMod = */ "",
2932 /* .pszR0Mod = */ "",
2933 /* .pfnConstruct = */ fdcConstruct,
2934 /* .pfnDestruct = */ NULL,
2935 /* .pfnRelocate = */ NULL,
2936 /* .pfnMemSetup = */ NULL,
2937 /* .pfnPowerOn = */ NULL,
2938 /* .pfnReset = */ fdcReset,
2939 /* .pfnSuspend = */ NULL,
2940 /* .pfnResume = */ NULL,
2941 /* .pfnAttach = */ fdcAttach,
2942 /* .pfnDetach = */ fdcDetach,
2943 /* .pfnQueryInterface = */ NULL,
2944 /* .pfnInitComplete = */ NULL,
2945 /* .pfnPowerOff = */ NULL,
2946 /* .pfnSoftReset = */ NULL,
2947 /* .pfnReserved0 = */ NULL,
2948 /* .pfnReserved1 = */ NULL,
2949 /* .pfnReserved2 = */ NULL,
2950 /* .pfnReserved3 = */ NULL,
2951 /* .pfnReserved4 = */ NULL,
2952 /* .pfnReserved5 = */ NULL,
2953 /* .pfnReserved6 = */ NULL,
2954 /* .pfnReserved7 = */ NULL,
2955#elif defined(IN_RING0)
2956 /* .pfnEarlyConstruct = */ NULL,
2957 /* .pfnConstruct = */ NULL,
2958 /* .pfnDestruct = */ NULL,
2959 /* .pfnFinalDestruct = */ NULL,
2960 /* .pfnRequest = */ NULL,
2961 /* .pfnReserved0 = */ NULL,
2962 /* .pfnReserved1 = */ NULL,
2963 /* .pfnReserved2 = */ NULL,
2964 /* .pfnReserved3 = */ NULL,
2965 /* .pfnReserved4 = */ NULL,
2966 /* .pfnReserved5 = */ NULL,
2967 /* .pfnReserved6 = */ NULL,
2968 /* .pfnReserved7 = */ NULL,
2969#elif defined(IN_RC)
2970 /* .pfnConstruct = */ NULL,
2971 /* .pfnReserved0 = */ NULL,
2972 /* .pfnReserved1 = */ NULL,
2973 /* .pfnReserved2 = */ NULL,
2974 /* .pfnReserved3 = */ NULL,
2975 /* .pfnReserved4 = */ NULL,
2976 /* .pfnReserved5 = */ NULL,
2977 /* .pfnReserved6 = */ NULL,
2978 /* .pfnReserved7 = */ NULL,
2979#else
2980# error "Not in IN_RING3, IN_RING0 or IN_RC!"
2981#endif
2982 /* .u32VersionEnd = */ PDM_DEVREG_VERSION
2983};
2984
2985/*
2986 * Local Variables:
2987 * mode: c
2988 * c-file-style: "k&r"
2989 * indent-tabs-mode: nil
2990 * End:
2991 */
2992
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