VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 51520

Last change on this file since 51520 was 49885, checked in by vboxsync, 11 years ago

Devices: Windows build fix
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File size: 100.5 KB
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1/* $Id: DevFdc.cpp 49885 2013-12-12 14:11:23Z vboxsync $ */
2/** @file
3 * VBox storage devices: Floppy disk controller
4 */
5
6/*
7 * Copyright (C) 2006-2013 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 * --------------------------------------------------------------------
17 *
18 * This code is based on:
19 *
20 * QEMU Floppy disk emulator (Intel 82078)
21 *
22 * Copyright (c) 2003 Jocelyn Mayer
23 *
24 * Permission is hereby granted, free of charge, to any person obtaining a copy
25 * of this software and associated documentation files (the "Software"), to deal
26 * in the Software without restriction, including without limitation the rights
27 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
28 * copies of the Software, and to permit persons to whom the Software is
29 * furnished to do so, subject to the following conditions:
30 *
31 * The above copyright notice and this permission notice shall be included in
32 * all copies or substantial portions of the Software.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
40 * THE SOFTWARE.
41 *
42 */
43
44
45/*******************************************************************************
46* Header Files *
47*******************************************************************************/
48#define LOG_GROUP LOG_GROUP_DEV_FDC
49#include <VBox/vmm/pdmdev.h>
50#include <iprt/assert.h>
51#include <iprt/string.h>
52#include <iprt/uuid.h>
53
54#include "VBoxDD.h"
55
56#define FDC_SAVESTATE_CURRENT 2 /* The new and improved saved state. */
57#define FDC_SAVESTATE_OLD 1 /* The original saved state. */
58
59#define MAX_FD 2
60
61
62/********************************************************/
63/* debug Floppy devices */
64/* #define DEBUG_FLOPPY */
65
66#ifndef VBOX
67 #ifdef DEBUG_FLOPPY
68 #define FLOPPY_DPRINTF(fmt, args...) \
69 do { printf("FLOPPY: " fmt , ##args); } while (0)
70 #endif
71#else /* !VBOX */
72 # ifdef LOG_ENABLED
73 static void FLOPPY_DPRINTF (const char *fmt, ...)
74 {
75 if (LogIsEnabled ()) {
76 va_list args;
77 va_start (args, fmt);
78 RTLogLogger (NULL, NULL, "floppy: %N", fmt, &args); /* %N - nested va_list * type formatting call. */
79 va_end (args);
80 }
81 }
82 # else
83 DECLINLINE(void) FLOPPY_DPRINTF(const char *pszFmt, ...) {}
84 # endif
85#endif /* !VBOX */
86
87#ifndef VBOX
88#define FLOPPY_ERROR(fmt, args...) \
89 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
90#else /* VBOX */
91# define FLOPPY_ERROR RTLogPrintf
92#endif /* VBOX */
93
94#ifdef VBOX
95typedef struct fdctrl_t fdctrl_t;
96#endif /* VBOX */
97
98/********************************************************/
99/* Floppy drive emulation */
100
101#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
102#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
103
104/* Will always be a fixed parameter for us */
105#define FD_SECTOR_LEN 512
106#define FD_SECTOR_SC 2 /* Sector size code */
107#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
108
109/* Floppy disk drive emulation */
110typedef enum fdisk_type_t {
111 FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
112 FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
113 FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
114 FDRIVE_DISK_USER = 0x04, /* User defined geometry */
115 FDRIVE_DISK_NONE = 0x05 /* No disk */
116} fdisk_type_t;
117
118typedef enum fdrive_type_t {
119 FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
120 FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
121 FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
122 FDRIVE_DRV_NONE = 0x03 /* No drive connected */
123#ifdef VBOX
124 , FDRIVE_DRV_FAKE_15_6 = 0x0e /* Fake 15.6 MB drive. */
125 , FDRIVE_DRV_FAKE_63_5 = 0x0f /* Fake 63.5 MB drive. */
126#endif
127} fdrive_type_t;
128
129typedef uint8_t fdrive_flags_t;
130#define FDISK_DBL_SIDES UINT8_C(0x01)
131
132typedef enum fdrive_rate_t {
133 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
134 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
135 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
136 FDRIVE_RATE_1M = 0x03 /* 1 Mbps */
137} fdrive_rate_t;
138
139/**
140 * The status for one drive.
141 *
142 * @implements PDMIBASE
143 * @implements PDMIBLOCKPORT
144 * @implements PDMIMOUNTNOTIFY
145 */
146typedef struct fdrive_t {
147#ifndef VBOX
148 BlockDriverState *bs;
149#else /* VBOX */
150 /** Pointer to the attached driver's base interface. */
151 R3PTRTYPE(PPDMIBASE) pDrvBase;
152 /** Pointer to the attached driver's block interface. */
153 R3PTRTYPE(PPDMIBLOCK) pDrvBlock;
154 /** Pointer to the attached driver's block bios interface. */
155 R3PTRTYPE(PPDMIBLOCKBIOS) pDrvBlockBios;
156 /** Pointer to the attached driver's mount interface.
157 * This is NULL if the driver isn't a removable unit. */
158 R3PTRTYPE(PPDMIMOUNT) pDrvMount;
159 /** The base interface. */
160 PDMIBASE IBase;
161 /** The block port interface. */
162 PDMIBLOCKPORT IPort;
163 /** The mount notify interface. */
164 PDMIMOUNTNOTIFY IMountNotify;
165 /** The LUN #. */
166 RTUINT iLUN;
167 /** The LED for this LUN. */
168 PDMLED Led;
169#endif
170 /* Drive status */
171 fdrive_type_t drive;
172 uint8_t perpendicular; /* 2.88 MB access mode */
173 uint8_t dsk_chg; /* Disk change line */
174 /* Position */
175 uint8_t head;
176 uint8_t track;
177 uint8_t sect;
178 uint8_t ltrk; /* Logical track */
179 /* Media */
180 fdrive_flags_t flags;
181 uint8_t last_sect; /* Nb sector per track */
182 uint8_t max_track; /* Nb of tracks */
183 uint16_t bps; /* Bytes per sector */
184 uint8_t ro; /* Is read-only */
185 uint8_t media_rate; /* Data rate of medium */
186} fdrive_t;
187
188#define NUM_SIDES(drv) (drv->flags & FDISK_DBL_SIDES ? 2 : 1)
189
190static void fd_init(fdrive_t *drv, bool fInit)
191{
192 /* Drive */
193#ifndef VBOX
194 drv->drive = FDRIVE_DRV_NONE;
195#else /* VBOX */
196 if (fInit) {
197 /* Fixate the drive type at init time if possible. */
198 if (drv->pDrvBlock) {
199 PDMBLOCKTYPE enmType = drv->pDrvBlock->pfnGetType(drv->pDrvBlock);
200 switch (enmType) {
201 case PDMBLOCKTYPE_FLOPPY_360:
202 case PDMBLOCKTYPE_FLOPPY_1_20:
203 drv->drive = FDRIVE_DRV_120;
204 break;
205 case PDMBLOCKTYPE_FLOPPY_720:
206 case PDMBLOCKTYPE_FLOPPY_1_44:
207 drv->drive = FDRIVE_DRV_144;
208 break;
209 default:
210 AssertFailed();
211 case PDMBLOCKTYPE_FLOPPY_2_88:
212 drv->drive = FDRIVE_DRV_288;
213 break;
214 case PDMBLOCKTYPE_FLOPPY_FAKE_15_6:
215 drv->drive = FDRIVE_DRV_FAKE_15_6;
216 break;
217 case PDMBLOCKTYPE_FLOPPY_FAKE_63_5:
218 drv->drive = FDRIVE_DRV_FAKE_63_5;
219 break;
220 }
221 } else {
222 drv->drive = FDRIVE_DRV_NONE;
223 }
224 } /* else: The BIOS (and others) get the drive type via the CMOS, so
225 don't change it after the VM has been constructed. */
226#endif /* VBOX */
227 drv->perpendicular = 0;
228 /* Disk */
229 drv->last_sect = 0;
230 drv->max_track = 0;
231}
232
233static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
234 uint8_t last_sect, uint8_t num_sides)
235{
236 return (((track * num_sides) + head) * last_sect) + sect - 1; /* sect >= 1 */
237}
238
239/* Returns current position, in sectors, for given drive */
240static int fd_sector(fdrive_t *drv)
241{
242 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, NUM_SIDES(drv));
243}
244
245/* Seek to a new position:
246 * returns 0 if already on right track
247 * returns 1 if track changed
248 * returns 2 if track is invalid
249 * returns 3 if sector is invalid
250 * returns 4 if seek is disabled
251 */
252static int fd_seek(fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
253 int enable_seek)
254{
255 int sector;
256 int ret;
257
258 if (track > drv->max_track ||
259 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
260 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
261 head, track, sect, 1,
262 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
263 drv->max_track, drv->last_sect);
264 return 2;
265 }
266 if (sect > drv->last_sect || sect < 1) {
267 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
268 head, track, sect, 1,
269 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
270 drv->max_track, drv->last_sect);
271 return 3;
272 }
273 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
274 ret = 0;
275 if (sector != fd_sector(drv)) {
276#if 0
277 if (!enable_seek) {
278 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
279 head, track, sect, 1, drv->max_track, drv->last_sect);
280 return 4;
281 }
282#endif
283 drv->head = head;
284 if (drv->track != track)
285 ret = 1;
286 drv->track = track;
287 drv->sect = sect;
288 }
289 drv->ltrk = drv->track;
290
291 return ret;
292}
293
294/* Set drive back to track 0 */
295static void fd_recalibrate(fdrive_t *drv)
296{
297 FLOPPY_DPRINTF("recalibrate\n");
298 drv->head = 0;
299 drv->track = 0;
300 drv->ltrk = 0;
301 drv->sect = 1;
302}
303
304/* Recognize floppy formats */
305typedef struct fd_format_t {
306 fdrive_type_t drive;
307 fdisk_type_t disk;
308 uint8_t last_sect; /**< Number of sectors. */
309 uint8_t max_track; /**< Number of tracks. */
310 uint8_t max_head; /**< Max head number. */
311 fdrive_rate_t rate;
312 const char *str;
313} fd_format_t;
314
315/* Note: Low-density disks (160K/180K/320K/360K) use 250 Kbps data rate
316 * in 40-track drives, but 300 Kbps in high-capacity 80-track drives.
317 */
318static fd_format_t fd_formats[] = {
319 /* First entry is default format */
320 /* 1.44 MB 3"1/2 floppy disks */
321 { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
322 { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
323 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
324 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
325 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
326 { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
327 { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
328 { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
329 /* 2.88 MB 3"1/2 floppy disks */
330 { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
331 { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
332 { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
333 { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
334 { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
335 /* 720 kB 3"1/2 floppy disks */
336 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
337 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
338 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
339 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
340 { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
341 { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
342 /* 1.2 MB 5"1/4 floppy disks */
343 { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 5\"1/4", },
344 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 5\"1/4", },
345 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, FDRIVE_RATE_500K, "1.48 MB 5\"1/4", },
346 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, FDRIVE_RATE_500K, "1.49 MB 5\"1/4", },
347 { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 5\"1/4", },
348 /* 720 kB 5"1/4 floppy disks */
349 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 5\"1/4", },
350 { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, FDRIVE_RATE_250K, "880 kB 5\"1/4", },
351 /* 360 kB 5"1/4 floppy disks (newer 9-sector formats) */
352 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 5\"1/4", },
353 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 5\"1/4", },
354 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, FDRIVE_RATE_300K, "410 kB 5\"1/4", },
355 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, FDRIVE_RATE_300K, "420 kB 5\"1/4", },
356 /* 320 kB 5"1/4 floppy disks (old 8-sector formats) */
357 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 5\"1/4", },
358 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 5\"1/4", },
359 /* 1.2 MB and low density 3"1/2 floppy 'aliases' */
360 { FDRIVE_DRV_144, FDRIVE_DISK_144, 15, 80, 1, FDRIVE_RATE_500K, " 1.2 MB 3\"1/2", },
361 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 3\"1/2", },
362 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 3\"1/2", },
363 { FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 3\"1/2", },
364 { FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 3\"1/2", },
365#ifdef VBOX /* For larger than real life floppy images (see DrvBlock.cpp). */
366 /* 15.6 MB fake floppy disk (just need something big). */
367 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB 3\"1/2", },
368 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
369 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
370 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
371 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
372 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
373 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
374 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
375 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
376 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
377 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
378 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
379 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
380 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
381 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
382 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
383 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
384 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
385 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
386 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
387 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB 3\"1/2", },
388 /* 63.5 MB fake floppy disk (just need something big). */
389 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 255, 255, 1, FDRIVE_RATE_1M, "63.5 MB 3\"1/2", },
390 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB 3\"1/2", },
391 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
392 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
393 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
394 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
395 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
396 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
397 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
398 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
399 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
400 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
401 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
402 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
403 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
404 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
405 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
406 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
407 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
408 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
409 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
410 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB 3\"1/2", },
411#endif
412 /* end */
413 { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, (uint8_t)-1, (uint8_t)-1, 0, (fdrive_rate_t)0, NULL, },
414};
415
416/* Revalidate a disk drive after a disk change */
417static void fd_revalidate(fdrive_t *drv)
418{
419 const fd_format_t *parse;
420 uint64_t nb_sectors, size;
421 int i, first_match, match;
422 int nb_heads, max_track, last_sect, ro;
423
424 FLOPPY_DPRINTF("revalidate\n");
425#ifndef VBOX
426 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
427 ro = bdrv_is_read_only(drv->bs);
428 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
429#else /* VBOX */
430 if ( drv->pDrvBlock
431 && drv->pDrvMount
432 && drv->pDrvMount->pfnIsMounted (drv->pDrvMount)) {
433 ro = drv->pDrvBlock->pfnIsReadOnly (drv->pDrvBlock);
434 nb_heads = max_track = last_sect = 0;
435#endif /* VBOX */
436 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
437 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
438 nb_heads - 1, max_track, last_sect);
439 } else {
440#ifndef VBOX
441 bdrv_get_geometry(drv->bs, &nb_sectors);
442#else /* VBOX */
443 {
444 uint64_t size2 = drv->pDrvBlock->pfnGetSize (drv->pDrvBlock);
445 nb_sectors = size2 / FD_SECTOR_LEN;
446 }
447#endif /* VBOX */
448 match = -1;
449 first_match = -1;
450 for (i = 0;; i++) {
451 parse = &fd_formats[i];
452 if (parse->drive == FDRIVE_DRV_NONE)
453 break;
454 if (drv->drive == parse->drive ||
455 drv->drive == FDRIVE_DRV_NONE) {
456 size = (parse->max_head + 1) * parse->max_track *
457 parse->last_sect;
458 if (nb_sectors == size) {
459 match = i;
460 break;
461 }
462 if (first_match == -1)
463 first_match = i;
464 }
465 }
466 if (match == -1) {
467 if (first_match == -1)
468 match = 1;
469 else
470 match = first_match;
471 parse = &fd_formats[match];
472 }
473 nb_heads = parse->max_head + 1;
474 max_track = parse->max_track;
475 last_sect = parse->last_sect;
476 drv->drive = parse->drive;
477#ifdef VBOX
478 drv->media_rate = parse->rate;
479#endif
480 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
481 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
482 LogRel(("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
483 nb_heads, max_track, last_sect, ro ? "ro" : "rw"));
484 }
485 if (nb_heads == 1) {
486 drv->flags &= ~FDISK_DBL_SIDES;
487 } else {
488 drv->flags |= FDISK_DBL_SIDES;
489 }
490 drv->max_track = max_track;
491 drv->last_sect = last_sect;
492 drv->ro = ro;
493 } else {
494 FLOPPY_DPRINTF("No disk in drive\n");
495 drv->last_sect = 0;
496 drv->max_track = 0;
497 drv->flags &= ~FDISK_DBL_SIDES;
498 drv->dsk_chg = true; /* Disk change line active. */
499 }
500}
501
502/********************************************************/
503/* Intel 82078 floppy disk controller emulation */
504
505static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq);
506static void fdctrl_reset_fifo(fdctrl_t *fdctrl);
507#ifndef VBOX
508static int fdctrl_transfer_handler (void *opaque, int nchan,
509 int dma_pos, int dma_len);
510#else /* VBOX: */
511static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
512 void *opaque,
513 unsigned nchan,
514 uint32_t dma_pos,
515 uint32_t dma_len);
516#endif /* VBOX */
517static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0);
518static fdrive_t *get_cur_drv(fdctrl_t *fdctrl);
519
520static void fdctrl_result_timer(void *opaque);
521static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl);
522static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl);
523static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl);
524static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value);
525static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl);
526static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value);
527static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl);
528static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value);
529static uint32_t fdctrl_read_data(fdctrl_t *fdctrl);
530static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value);
531static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl);
532static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value);
533
534enum {
535 FD_DIR_WRITE = 0,
536 FD_DIR_READ = 1,
537 FD_DIR_SCANE = 2,
538 FD_DIR_SCANL = 3,
539 FD_DIR_SCANH = 4,
540 FD_DIR_FORMAT = 5
541};
542
543enum {
544 FD_STATE_MULTI = 0x01, /* multi track flag */
545 FD_STATE_FORMAT = 0x02, /* format flag */
546 FD_STATE_SEEK = 0x04 /* seek flag */
547};
548
549enum {
550 FD_REG_SRA = 0x00,
551 FD_REG_SRB = 0x01,
552 FD_REG_DOR = 0x02,
553 FD_REG_TDR = 0x03,
554 FD_REG_MSR = 0x04,
555 FD_REG_DSR = 0x04,
556 FD_REG_FIFO = 0x05,
557 FD_REG_DIR = 0x07,
558 FD_REG_CCR = 0x07
559};
560
561enum {
562 FD_CMD_READ_TRACK = 0x02,
563 FD_CMD_SPECIFY = 0x03,
564 FD_CMD_SENSE_DRIVE_STATUS = 0x04,
565 FD_CMD_WRITE = 0x05,
566 FD_CMD_READ = 0x06,
567 FD_CMD_RECALIBRATE = 0x07,
568 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
569 FD_CMD_WRITE_DELETED = 0x09,
570 FD_CMD_READ_ID = 0x0a,
571 FD_CMD_READ_DELETED = 0x0c,
572 FD_CMD_FORMAT_TRACK = 0x0d,
573 FD_CMD_DUMPREG = 0x0e,
574 FD_CMD_SEEK = 0x0f,
575 FD_CMD_VERSION = 0x10,
576 FD_CMD_SCAN_EQUAL = 0x11,
577 FD_CMD_PERPENDICULAR_MODE = 0x12,
578 FD_CMD_CONFIGURE = 0x13,
579 FD_CMD_LOCK = 0x14,
580 FD_CMD_VERIFY = 0x16,
581 FD_CMD_POWERDOWN_MODE = 0x17,
582 FD_CMD_PART_ID = 0x18,
583 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
584 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
585 FD_CMD_SAVE = 0x2e,
586 FD_CMD_OPTION = 0x33,
587 FD_CMD_RESTORE = 0x4e,
588 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
589 FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
590 FD_CMD_FORMAT_AND_WRITE = 0xcd,
591 FD_CMD_RELATIVE_SEEK_IN = 0xcf
592};
593
594enum {
595 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
596 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
597 FD_CONFIG_POLL = 0x10, /* Poll enabled */
598 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
599 FD_CONFIG_EIS = 0x40 /* No implied seeks */
600};
601
602enum {
603 FD_SR0_EQPMT = 0x10,
604 FD_SR0_SEEK = 0x20,
605 FD_SR0_ABNTERM = 0x40,
606 FD_SR0_INVCMD = 0x80,
607 FD_SR0_RDYCHG = 0xc0
608};
609
610enum {
611 FD_SR1_MA = 0x01, /* Missing address mark */
612 FD_SR1_NW = 0x02, /* Not writable */
613 FD_SR1_ND = 0x04, /* No data */
614 FD_SR1_EC = 0x80 /* End of cylinder */
615};
616
617enum {
618 FD_SR2_MD = 0x01, /* Missing data address mark */
619 FD_SR2_SNS = 0x04, /* Scan not satisfied */
620 FD_SR2_SEH = 0x08 /* Scan equal hit */
621};
622
623enum {
624 FD_SRA_DIR = 0x01,
625 FD_SRA_nWP = 0x02,
626 FD_SRA_nINDX = 0x04,
627 FD_SRA_HDSEL = 0x08,
628 FD_SRA_nTRK0 = 0x10,
629 FD_SRA_STEP = 0x20,
630 FD_SRA_nDRV2 = 0x40,
631 FD_SRA_INTPEND = 0x80
632};
633
634enum {
635 FD_SRB_MTR0 = 0x01,
636 FD_SRB_MTR1 = 0x02,
637 FD_SRB_WGATE = 0x04,
638 FD_SRB_RDATA = 0x08,
639 FD_SRB_WDATA = 0x10,
640 FD_SRB_DR0 = 0x20
641};
642
643enum {
644#if MAX_FD == 4
645 FD_DOR_SELMASK = 0x03,
646#else
647 FD_DOR_SELMASK = 0x01,
648#endif
649 FD_DOR_nRESET = 0x04,
650 FD_DOR_DMAEN = 0x08,
651 FD_DOR_MOTEN0 = 0x10,
652 FD_DOR_MOTEN1 = 0x20,
653 FD_DOR_MOTEN2 = 0x40,
654 FD_DOR_MOTEN3 = 0x80
655};
656
657enum {
658#if MAX_FD == 4
659 FD_TDR_BOOTSEL = 0x0c
660#else
661 FD_TDR_BOOTSEL = 0x04
662#endif
663};
664
665enum {
666 FD_DSR_DRATEMASK= 0x03,
667 FD_DSR_PWRDOWN = 0x40,
668 FD_DSR_SWRESET = 0x80
669};
670
671enum {
672 FD_MSR_DRV0BUSY = 0x01,
673 FD_MSR_DRV1BUSY = 0x02,
674 FD_MSR_DRV2BUSY = 0x04,
675 FD_MSR_DRV3BUSY = 0x08,
676 FD_MSR_CMDBUSY = 0x10,
677 FD_MSR_NONDMA = 0x20,
678 FD_MSR_DIO = 0x40,
679 FD_MSR_RQM = 0x80
680};
681
682enum {
683 FD_DIR_DSKCHG = 0x80
684};
685
686#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
687#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
688#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
689
690#ifdef VBOX
691/**
692 * Floppy controller state.
693 *
694 * @implements PDMILEDPORTS
695 */
696#endif
697struct fdctrl_t {
698#ifndef VBOX
699 fdctrl_t *fdctrl;
700#endif
701 /* Controller's identification */
702 uint8_t version;
703 /* HW */
704#ifndef VBOX
705 int irq;
706 int dma_chann;
707#else
708 uint8_t irq_lvl;
709 uint8_t dma_chann;
710#endif
711 uint32_t io_base;
712 /* Controller state */
713#ifndef VBOX
714 QEMUTimer *result_timer;
715#else
716 struct TMTIMER *result_timer;
717#endif
718 uint8_t sra;
719 uint8_t srb;
720 uint8_t dor;
721 uint8_t tdr;
722 uint8_t dsr;
723 uint8_t msr;
724 uint8_t cur_drv;
725 uint8_t status0;
726 uint8_t status1;
727 uint8_t status2;
728 /* Command FIFO */
729 uint8_t fifo[FD_SECTOR_LEN];
730 uint32_t data_pos;
731 uint32_t data_len;
732 uint8_t data_state;
733 uint8_t data_dir;
734 uint8_t eot; /* last wanted sector */
735 /* States kept only to be returned back */
736 /* Timers state */
737 uint8_t timer0;
738 uint8_t timer1;
739 /* precompensation */
740 uint8_t precomp_trk;
741 uint8_t config;
742 uint8_t lock;
743 /* Power down config (also with status regB access mode */
744 uint8_t pwrd;
745 /* Floppy drives */
746 uint8_t num_floppies;
747 fdrive_t drives[MAX_FD];
748 uint8_t reset_sensei;
749#ifdef VBOX
750 /** Pointer to device instance. */
751 PPDMDEVINS pDevIns;
752
753 /** Status LUN: The base interface. */
754 PDMIBASE IBaseStatus;
755 /** Status LUN: The Leds interface. */
756 PDMILEDPORTS ILeds;
757 /** Status LUN: The Partner of ILeds. */
758 PPDMILEDCONNECTORS pLedsConnector;
759#endif
760};
761
762static uint32_t fdctrl_read (void *opaque, uint32_t reg)
763{
764 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
765 uint32_t retval;
766
767 switch (reg) {
768 case FD_REG_SRA:
769 retval = fdctrl_read_statusA(fdctrl);
770 break;
771 case FD_REG_SRB:
772 retval = fdctrl_read_statusB(fdctrl);
773 break;
774 case FD_REG_DOR:
775 retval = fdctrl_read_dor(fdctrl);
776 break;
777 case FD_REG_TDR:
778 retval = fdctrl_read_tape(fdctrl);
779 break;
780 case FD_REG_MSR:
781 retval = fdctrl_read_main_status(fdctrl);
782 break;
783 case FD_REG_FIFO:
784 retval = fdctrl_read_data(fdctrl);
785 break;
786 case FD_REG_DIR:
787 retval = fdctrl_read_dir(fdctrl);
788 break;
789 default:
790 retval = (uint32_t)(-1);
791 break;
792 }
793 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
794
795 return retval;
796}
797
798static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
799{
800 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
801
802 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
803
804 switch (reg) {
805 case FD_REG_DOR:
806 fdctrl_write_dor(fdctrl, value);
807 break;
808 case FD_REG_TDR:
809 fdctrl_write_tape(fdctrl, value);
810 break;
811 case FD_REG_DSR:
812 fdctrl_write_rate(fdctrl, value);
813 break;
814 case FD_REG_FIFO:
815 fdctrl_write_data(fdctrl, value);
816 break;
817 case FD_REG_CCR:
818 fdctrl_write_ccr(fdctrl, value);
819 break;
820 default:
821 break;
822 }
823}
824
825/* Change IRQ state */
826static void fdctrl_reset_irq(fdctrl_t *fdctrl)
827{
828 if (!(fdctrl->sra & FD_SRA_INTPEND))
829 return;
830 FLOPPY_DPRINTF("Reset interrupt\n");
831#ifdef VBOX
832 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
833#else
834 qemu_set_irq(fdctrl->irq, 0);
835#endif
836 fdctrl->sra &= ~FD_SRA_INTPEND;
837}
838
839static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
840{
841 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
842 FLOPPY_DPRINTF("Raising interrupt...\n");
843#ifdef VBOX
844 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
845#else
846 qemu_set_irq(fdctrl->irq, 1);
847#endif
848 fdctrl->sra |= FD_SRA_INTPEND;
849 }
850 if (status0 & FD_SR0_SEEK) {
851 fdrive_t *cur_drv;
852
853 /* A seek clears the disk change line (if a disk is inserted). */
854 cur_drv = get_cur_drv(fdctrl);
855 if (cur_drv->max_track)
856 cur_drv->dsk_chg = false;
857 }
858
859 fdctrl->reset_sensei = 0;
860 fdctrl->status0 = status0;
861 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
862}
863
864/* Reset controller */
865static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
866{
867 int i;
868
869 FLOPPY_DPRINTF("reset controller\n");
870 fdctrl_reset_irq(fdctrl);
871 /* Initialise controller */
872 fdctrl->sra = 0;
873 fdctrl->srb = 0xc0;
874#ifdef VBOX
875 if (!fdctrl->drives[1].pDrvBlock)
876#else
877 if (!fdctrl->drives[1].bs)
878#endif
879 fdctrl->sra |= FD_SRA_nDRV2;
880 fdctrl->cur_drv = 0;
881 fdctrl->dor = FD_DOR_nRESET;
882 fdctrl->dor |= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
883 fdctrl->msr = FD_MSR_RQM;
884 /* FIFO state */
885 fdctrl->data_pos = 0;
886 fdctrl->data_len = 0;
887 fdctrl->data_state = 0;
888 fdctrl->data_dir = FD_DIR_WRITE;
889 for (i = 0; i < MAX_FD; i++)
890 fd_recalibrate(&fdctrl->drives[i]);
891 fdctrl_reset_fifo(fdctrl);
892 if (do_irq) {
893 fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
894 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
895 }
896}
897
898static inline fdrive_t *drv0(fdctrl_t *fdctrl)
899{
900 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
901}
902
903static inline fdrive_t *drv1(fdctrl_t *fdctrl)
904{
905 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
906 return &fdctrl->drives[1];
907 else
908 return &fdctrl->drives[0];
909}
910
911#if MAX_FD == 4
912static inline fdrive_t *drv2(fdctrl_t *fdctrl)
913{
914 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
915 return &fdctrl->drives[2];
916 else
917 return &fdctrl->drives[1];
918}
919
920static inline fdrive_t *drv3(fdctrl_t *fdctrl)
921{
922 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
923 return &fdctrl->drives[3];
924 else
925 return &fdctrl->drives[2];
926}
927#endif
928
929static fdrive_t *get_cur_drv(fdctrl_t *fdctrl)
930{
931 switch (fdctrl->cur_drv) {
932 case 0: return drv0(fdctrl);
933 case 1: return drv1(fdctrl);
934#if MAX_FD == 4
935 case 2: return drv2(fdctrl);
936 case 3: return drv3(fdctrl);
937#endif
938 default: return NULL;
939 }
940}
941
942/* Status A register : 0x00 (read-only) */
943static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
944{
945 uint32_t retval = fdctrl->sra;
946
947 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
948
949 return retval;
950}
951
952/* Status B register : 0x01 (read-only) */
953static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
954{
955 uint32_t retval = fdctrl->srb;
956
957 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
958
959 return retval;
960}
961
962/* Digital output register : 0x02 */
963static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
964{
965 uint32_t retval = fdctrl->dor;
966
967 /* Selected drive */
968 retval |= fdctrl->cur_drv;
969 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
970
971 return retval;
972}
973
974static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
975{
976 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
977
978 /* Motors */
979 if (value & FD_DOR_MOTEN0)
980 fdctrl->srb |= FD_SRB_MTR0;
981 else
982 fdctrl->srb &= ~FD_SRB_MTR0;
983 if (value & FD_DOR_MOTEN1)
984 fdctrl->srb |= FD_SRB_MTR1;
985 else
986 fdctrl->srb &= ~FD_SRB_MTR1;
987
988 /* Drive */
989 if (value & 1)
990 fdctrl->srb |= FD_SRB_DR0;
991 else
992 fdctrl->srb &= ~FD_SRB_DR0;
993
994 /* Reset */
995 if (!(value & FD_DOR_nRESET)) {
996 if (fdctrl->dor & FD_DOR_nRESET) {
997 FLOPPY_DPRINTF("controller enter RESET state\n");
998 }
999 } else {
1000 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1001 FLOPPY_DPRINTF("controller out of RESET state\n");
1002 fdctrl_reset(fdctrl, 1);
1003 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1004 }
1005 }
1006 /* Selected drive */
1007 fdctrl->cur_drv = value & FD_DOR_SELMASK;
1008
1009 fdctrl->dor = value;
1010}
1011
1012/* Tape drive register : 0x03 */
1013static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
1014{
1015 uint32_t retval = fdctrl->tdr;
1016
1017 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
1018
1019 return retval;
1020}
1021
1022static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
1023{
1024 /* Reset mode */
1025 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1026 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1027 return;
1028 }
1029 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
1030 /* Disk boot selection indicator */
1031 fdctrl->tdr = value & FD_TDR_BOOTSEL;
1032 /* Tape indicators: never allow */
1033}
1034
1035/* Main status register : 0x04 (read) */
1036static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
1037{
1038 uint32_t retval = fdctrl->msr;
1039
1040 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1041 fdctrl->dor |= FD_DOR_nRESET;
1042
1043 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
1044
1045 return retval;
1046}
1047
1048/* Data select rate register : 0x04 (write) */
1049static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
1050{
1051 /* Reset mode */
1052 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1053 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1054 return;
1055 }
1056 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
1057 /* Reset: autoclear */
1058 if (value & FD_DSR_SWRESET) {
1059 fdctrl->dor &= ~FD_DOR_nRESET;
1060 fdctrl_reset(fdctrl, 1);
1061 fdctrl->dor |= FD_DOR_nRESET;
1062 }
1063 if (value & FD_DSR_PWRDOWN) {
1064 fdctrl_reset(fdctrl, 1);
1065 }
1066 fdctrl->dsr = value;
1067}
1068
1069/* Configuration control register : 0x07 (write) */
1070static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
1071{
1072 /* Reset mode */
1073 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1074 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1075 return;
1076 }
1077 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1078
1079 /* Only the rate selection bits used in AT mode, and we
1080 * store those in the DSR.
1081 */
1082 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | (value & FD_DSR_DRATEMASK);
1083}
1084
1085static int fdctrl_media_changed(fdrive_t *drv)
1086{
1087#ifdef VBOX
1088 return drv->dsk_chg;
1089#else
1090 int ret;
1091
1092 if (!drv->bs)
1093 return 0;
1094 ret = bdrv_media_changed(drv->bs);
1095 if (ret) {
1096 fd_revalidate(drv);
1097 }
1098 return ret;
1099#endif
1100}
1101
1102/* Digital input register : 0x07 (read-only) */
1103static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1104{
1105 uint32_t retval = 0;
1106
1107#ifdef VBOX
1108 /* The change line signal is reported by the currently selected
1109 * drive. If the corresponding motor on bit is not set, the drive
1110 * is *not* selected!
1111 */
1112 if (fdctrl_media_changed(get_cur_drv(fdctrl))
1113 && (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1114#else
1115 if (fdctrl_media_changed(drv0(fdctrl))
1116 || fdctrl_media_changed(drv1(fdctrl))
1117#if MAX_FD == 4
1118 || fdctrl_media_changed(drv2(fdctrl))
1119 || fdctrl_media_changed(drv3(fdctrl))
1120#endif
1121 )
1122#endif
1123 retval |= FD_DIR_DSKCHG;
1124 if (retval != 0)
1125 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1126
1127 return retval;
1128}
1129
1130/* FIFO state control */
1131static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1132{
1133 fdctrl->data_dir = FD_DIR_WRITE;
1134 fdctrl->data_pos = 0;
1135 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1136}
1137
1138/* Set FIFO status for the host to read */
1139static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1140{
1141 fdctrl->data_dir = FD_DIR_READ;
1142 fdctrl->data_len = fifo_len;
1143 fdctrl->data_pos = 0;
1144 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1145 if (do_irq)
1146 fdctrl_raise_irq(fdctrl, 0x00);
1147}
1148
1149/* Set an error: unimplemented/unknown command */
1150static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1151{
1152 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1153 fdctrl->fifo[0] = FD_SR0_INVCMD;
1154 fdctrl_set_fifo(fdctrl, 1, 0);
1155}
1156
1157/* Seek to next sector */
1158static int fdctrl_seek_to_next_sect(fdctrl_t *fdctrl, fdrive_t *cur_drv)
1159{
1160 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1161 cur_drv->head, cur_drv->track, cur_drv->sect,
1162 fd_sector(cur_drv));
1163 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1164 error in fact */
1165 if (cur_drv->sect >= cur_drv->last_sect ||
1166 cur_drv->sect == fdctrl->eot) {
1167 cur_drv->sect = 1;
1168 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1169 if (cur_drv->head == 0 &&
1170 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1171 cur_drv->head = 1;
1172 } else {
1173 cur_drv->head = 0;
1174 cur_drv->ltrk++;
1175 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1176 return 0;
1177 }
1178 } else {
1179 cur_drv->ltrk++;
1180 return 0;
1181 }
1182 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1183 cur_drv->head, cur_drv->track,
1184 cur_drv->sect, fd_sector(cur_drv));
1185 } else {
1186 cur_drv->sect++;
1187 }
1188 return 1;
1189}
1190
1191/* Callback for transfer end (stop or abort) */
1192static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1193 uint8_t status1, uint8_t status2)
1194{
1195 fdrive_t *cur_drv;
1196
1197 cur_drv = get_cur_drv(fdctrl);
1198 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1199 status0, status1, status2,
1200 status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1201 fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1202 fdctrl->fifo[1] = status1;
1203 fdctrl->fifo[2] = status2;
1204 fdctrl->fifo[3] = cur_drv->ltrk;
1205 fdctrl->fifo[4] = cur_drv->head;
1206 fdctrl->fifo[5] = cur_drv->sect;
1207 fdctrl->fifo[6] = FD_SECTOR_SC;
1208 FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1209 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1210 fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1211
1212 fdctrl->data_dir = FD_DIR_READ;
1213 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1214#ifdef VBOX
1215 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1216#else
1217 DMA_release_DREQ(fdctrl->dma_chann);
1218#endif
1219 }
1220 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1221 fdctrl->msr &= ~FD_MSR_NONDMA;
1222 fdctrl_set_fifo(fdctrl, 7, 1);
1223}
1224
1225/* Prepare a data transfer (either DMA or FIFO) */
1226static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1227{
1228 fdrive_t *cur_drv;
1229 uint8_t kh, kt, ks;
1230 int did_seek = 0;
1231
1232 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1233 cur_drv = get_cur_drv(fdctrl);
1234 kt = fdctrl->fifo[2];
1235 kh = fdctrl->fifo[3];
1236 ks = fdctrl->fifo[4];
1237 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1238 GET_CUR_DRV(fdctrl), kh, kt, ks,
1239 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1240 FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1241 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1242 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1243 fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1244 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1245 case 2:
1246 /* sect too big */
1247 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1248 fdctrl->fifo[3] = kt;
1249 fdctrl->fifo[4] = kh;
1250 fdctrl->fifo[5] = ks;
1251 return;
1252 case 3:
1253 /* track too big */
1254 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1255 fdctrl->fifo[3] = kt;
1256 fdctrl->fifo[4] = kh;
1257 fdctrl->fifo[5] = ks;
1258 return;
1259 case 4:
1260 /* No seek enabled */
1261 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1262 fdctrl->fifo[3] = kt;
1263 fdctrl->fifo[4] = kh;
1264 fdctrl->fifo[5] = ks;
1265 return;
1266 case 1:
1267 did_seek = 1;
1268 break;
1269 default:
1270 break;
1271 }
1272 /* Check the data rate. If the programmed data rate does not match
1273 * the currently inserted medium, the operation has to fail.
1274 */
1275#ifdef VBOX
1276 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1277 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1278 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1279 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1280 fdctrl->fifo[3] = kt;
1281 fdctrl->fifo[4] = kh;
1282 fdctrl->fifo[5] = ks;
1283 return;
1284 }
1285#endif
1286 /* Set the FIFO state */
1287 fdctrl->data_dir = direction;
1288 fdctrl->data_pos = 0;
1289 fdctrl->msr |= FD_MSR_CMDBUSY;
1290 if (fdctrl->fifo[0] & 0x80)
1291 fdctrl->data_state |= FD_STATE_MULTI;
1292 else
1293 fdctrl->data_state &= ~FD_STATE_MULTI;
1294 if (did_seek)
1295 fdctrl->data_state |= FD_STATE_SEEK;
1296 else
1297 fdctrl->data_state &= ~FD_STATE_SEEK;
1298 if (fdctrl->fifo[5] == 00) {
1299 fdctrl->data_len = fdctrl->fifo[8];
1300 } else {
1301 int tmp;
1302 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1303 tmp = (fdctrl->fifo[6] - ks + 1);
1304 if (fdctrl->fifo[0] & 0x80)
1305 tmp += fdctrl->fifo[6];
1306 fdctrl->data_len *= tmp;
1307 }
1308 fdctrl->eot = fdctrl->fifo[6];
1309 if (fdctrl->dor & FD_DOR_DMAEN) {
1310 int dma_mode;
1311 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1312#ifndef VBOX
1313 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1314#else
1315 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1316#endif
1317 dma_mode = (dma_mode >> 2) & 3;
1318 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1319 dma_mode, direction,
1320 (128 << fdctrl->fifo[5]) *
1321 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1322 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1323 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1324 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1325 (direction == FD_DIR_READ && (dma_mode == 1 || dma_mode == 0))) {
1326 /* No access is allowed until DMA transfer has completed */
1327 fdctrl->msr &= ~FD_MSR_RQM;
1328 /* Now, we just have to wait for the DMA controller to
1329 * recall us...
1330 */
1331#ifndef VBOX
1332 DMA_hold_DREQ(fdctrl->dma_chann);
1333 DMA_schedule(fdctrl->dma_chann);
1334#else
1335 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1336 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1337#endif
1338 return;
1339 } else {
1340 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1341 }
1342 }
1343 FLOPPY_DPRINTF("start non-DMA transfer\n");
1344 fdctrl->msr |= FD_MSR_NONDMA;
1345 if (direction != FD_DIR_WRITE)
1346 fdctrl->msr |= FD_MSR_DIO;
1347 /* IO based transfer: calculate len */
1348 fdctrl_raise_irq(fdctrl, 0x00);
1349
1350 return;
1351}
1352
1353/* Prepare a format data transfer (either DMA or FIFO) */
1354static void fdctrl_start_format(fdctrl_t *fdctrl)
1355{
1356 fdrive_t *cur_drv;
1357 uint8_t ns, dp, kh, kt, ks;
1358
1359 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1360 cur_drv = get_cur_drv(fdctrl);
1361 kt = cur_drv->track;
1362 kh = (fdctrl->fifo[1] & 0x04) >> 2;
1363 ns = fdctrl->fifo[3];
1364 dp = fdctrl->fifo[5];
1365 ks = 1;
1366 FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1367 GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1368 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1369 switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1370 case 2:
1371 /* sect too big */
1372 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1373 fdctrl->fifo[3] = kt;
1374 fdctrl->fifo[4] = kh;
1375 fdctrl->fifo[5] = ks;
1376 return;
1377 case 3:
1378 /* track too big */
1379 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1380 fdctrl->fifo[3] = kt;
1381 fdctrl->fifo[4] = kh;
1382 fdctrl->fifo[5] = ks;
1383 return;
1384 case 4:
1385 /* No seek enabled */
1386 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1387 fdctrl->fifo[3] = kt;
1388 fdctrl->fifo[4] = kh;
1389 fdctrl->fifo[5] = ks;
1390 return;
1391 case 1:
1392 break;
1393 default:
1394 break;
1395 }
1396 /* It's not clear what should happen if the data rate does not match. */
1397#if 0
1398 /* Check the data rate. If the programmed data rate does not match
1399 * the currently inserted medium, the operation has to fail.
1400 */
1401 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1402 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1403 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1404 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1405 fdctrl->fifo[3] = kt;
1406 fdctrl->fifo[4] = kh;
1407 fdctrl->fifo[5] = ks;
1408 return;
1409 }
1410#endif
1411 /* Set the FIFO state */
1412 fdctrl->data_dir = FD_DIR_FORMAT;
1413 fdctrl->data_pos = 0;
1414 fdctrl->msr |= FD_MSR_CMDBUSY;
1415 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1416 fdctrl->data_len = ns * 4;
1417 fdctrl->eot = ns;
1418 if (fdctrl->dor & FD_DOR_DMAEN) {
1419 int dma_mode;
1420 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1421#ifndef VBOX
1422 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1423#else
1424 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1425#endif
1426 dma_mode = (dma_mode >> 2) & 3;
1427 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1428 dma_mode, fdctrl->data_dir,
1429 (128 << fdctrl->fifo[2]) *
1430 (cur_drv->last_sect + 1), fdctrl->data_len);
1431 if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1432 /* No access is allowed until DMA transfer has completed */
1433 fdctrl->msr &= ~FD_MSR_RQM;
1434 /* Now, we just have to wait for the DMA controller to
1435 * recall us...
1436 */
1437#ifndef VBOX
1438 DMA_hold_DREQ(fdctrl->dma_chann);
1439 DMA_schedule(fdctrl->dma_chann);
1440#else
1441 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1442 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1443#endif
1444 return;
1445 } else {
1446 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1447 }
1448 }
1449 FLOPPY_DPRINTF("start non-DMA format\n");
1450 fdctrl->msr |= FD_MSR_NONDMA;
1451 /* IO based transfer: calculate len */
1452 fdctrl_raise_irq(fdctrl, 0x00);
1453
1454 return;
1455}
1456
1457/* Prepare a transfer of deleted data */
1458static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1459{
1460 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1461
1462 /* We don't handle deleted data,
1463 * so we don't return *ANYTHING*
1464 */
1465 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1466}
1467
1468#ifdef VBOX
1469/* Block driver read/write wrappers. */
1470
1471static int blk_write(fdrive_t *drv, int64_t sector_num, const uint8_t *buf, int nb_sectors)
1472{
1473 int rc;
1474
1475 drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1476
1477 rc = drv->pDrvBlock->pfnWrite(drv->pDrvBlock, sector_num * FD_SECTOR_LEN,
1478 buf, nb_sectors * FD_SECTOR_LEN);
1479
1480 drv->Led.Actual.s.fWriting = 0;
1481 if (RT_FAILURE(rc))
1482 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1483
1484 return rc;
1485}
1486
1487static int blk_read(fdrive_t *drv, int64_t sector_num, uint8_t *buf, int nb_sectors)
1488{
1489 int rc;
1490
1491 drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1492
1493 rc = drv->pDrvBlock->pfnRead(drv->pDrvBlock, sector_num * FD_SECTOR_LEN,
1494 buf, nb_sectors * FD_SECTOR_LEN);
1495
1496 drv->Led.Actual.s.fReading = 0;
1497
1498 if (RT_FAILURE(rc))
1499 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1500
1501 return rc;
1502}
1503
1504#endif
1505
1506/* handlers for DMA transfers */
1507#ifdef VBOX
1508static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
1509 void *opaque,
1510 unsigned nchan,
1511 uint32_t dma_pos,
1512 uint32_t dma_len)
1513#else
1514static int fdctrl_transfer_handler (void *opaque, int nchan,
1515 int dma_pos, int dma_len)
1516#endif
1517{
1518 fdctrl_t *fdctrl;
1519 fdrive_t *cur_drv;
1520#ifdef VBOX
1521 int rc;
1522 uint32_t len = 0;
1523 uint32_t start_pos, rel_pos;
1524#else
1525 int len, start_pos, rel_pos;
1526#endif
1527 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1528
1529 fdctrl = (fdctrl_t *)opaque;
1530 if (fdctrl->msr & FD_MSR_RQM) {
1531 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1532 return 0;
1533 }
1534 cur_drv = get_cur_drv(fdctrl);
1535 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1536 fdctrl->data_dir == FD_DIR_SCANH)
1537 status2 = FD_SR2_SNS;
1538 if (dma_len > fdctrl->data_len)
1539 dma_len = fdctrl->data_len;
1540#ifndef VBOX
1541 if (cur_drv->bs == NULL)
1542#else /* !VBOX */
1543 if (cur_drv->pDrvBlock == NULL)
1544#endif
1545 {
1546 if (fdctrl->data_dir == FD_DIR_WRITE)
1547 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1548 else
1549 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1550 Assert(len == 0);
1551 goto transfer_error;
1552 }
1553
1554#ifdef VBOX
1555 if (cur_drv->ro)
1556 {
1557 if (fdctrl->data_dir == FD_DIR_WRITE || fdctrl->data_dir == FD_DIR_FORMAT)
1558 {
1559 /* Handle readonly medium early, no need to do DMA, touch the
1560 * LED or attempt any writes. A real floppy doesn't attempt
1561 * to write to readonly media either. */
1562 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1563 0x00);
1564 Assert(len == 0);
1565 goto transfer_error;
1566 }
1567 }
1568#endif
1569
1570
1571 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1572 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1573 len = dma_len - fdctrl->data_pos;
1574 if (len + rel_pos > FD_SECTOR_LEN)
1575 len = FD_SECTOR_LEN - rel_pos;
1576 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1577 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1578 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1579 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1580 fd_sector(cur_drv) * FD_SECTOR_LEN);
1581 if (fdctrl->data_dir != FD_DIR_FORMAT &&
1582 (fdctrl->data_dir != FD_DIR_WRITE ||
1583 len < FD_SECTOR_LEN || rel_pos != 0)) {
1584 /* READ & SCAN commands and realign to a sector for WRITE */
1585#ifdef VBOX
1586 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1587 if (RT_FAILURE(rc))
1588#else
1589 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1590 fdctrl->fifo, 1) < 0)
1591#endif
1592 {
1593 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1594 fd_sector(cur_drv));
1595 /* Sure, image size is too small... */
1596 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1597 }
1598 }
1599 switch (fdctrl->data_dir) {
1600 case FD_DIR_READ:
1601 /* READ commands */
1602#ifdef VBOX
1603 {
1604 uint32_t read;
1605 int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, nchan,
1606 fdctrl->fifo + rel_pos,
1607 fdctrl->data_pos,
1608 len, &read);
1609 AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1610 }
1611#else
1612 DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1613 fdctrl->data_pos, len);
1614#endif
1615/* cpu_physical_memory_write(addr + fdctrl->data_pos, */
1616/* fdctrl->fifo + rel_pos, len); */
1617 break;
1618 case FD_DIR_WRITE:
1619 /* WRITE commands */
1620#ifdef VBOX
1621 {
1622 uint32_t written;
1623 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1624 fdctrl->fifo + rel_pos,
1625 fdctrl->data_pos,
1626 len, &written);
1627 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1628 }
1629
1630 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1631 if (RT_FAILURE(rc))
1632#else
1633 DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1634 fdctrl->data_pos, len);
1635 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1636 fdctrl->fifo, 1) < 0)
1637#endif
1638 {
1639 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1640 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1641 goto transfer_error;
1642 }
1643 break;
1644#ifdef VBOX
1645 case FD_DIR_FORMAT:
1646 /* FORMAT command */
1647 {
1648 uint8_t eot = fdctrl->fifo[3];
1649 uint8_t filler = fdctrl->fifo[5];
1650 uint32_t written;
1651 int sct;
1652 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1653 fdctrl->fifo + rel_pos,
1654 fdctrl->data_pos,
1655 len, &written);
1656 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1657
1658 /* Fill the entire track with desired data pattern. */
1659 FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1660 eot, filler);
1661 memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1662 for (sct = 0; sct < eot; ++sct)
1663 {
1664 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1665 if (RT_FAILURE(rc))
1666 {
1667 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1668 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1669 goto transfer_error;
1670 }
1671 fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1672 }
1673 }
1674 break;
1675#endif
1676 default:
1677 /* SCAN commands */
1678 {
1679 uint8_t tmpbuf[FD_SECTOR_LEN];
1680 int ret;
1681#ifdef VBOX
1682 uint32_t read;
1683 int rc2 = PDMDevHlpDMAReadMemory (fdctrl->pDevIns, nchan, tmpbuf,
1684 fdctrl->data_pos, len, &read);
1685 AssertMsg (RT_SUCCESS (rc2), ("DMAReadMemory -> %Rrc2\n", rc2));
1686#else
1687 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1688#endif
1689 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1690 if (ret == 0) {
1691 status2 = FD_SR2_SEH;
1692 goto end_transfer;
1693 }
1694 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1695 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1696 status2 = 0x00;
1697 goto end_transfer;
1698 }
1699 }
1700 break;
1701 }
1702 fdctrl->data_pos += len;
1703 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1704 if (rel_pos == 0) {
1705 /* Seek to next sector */
1706 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1707 break;
1708 }
1709 }
1710end_transfer:
1711 len = fdctrl->data_pos - start_pos;
1712 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1713 fdctrl->data_pos, len, fdctrl->data_len);
1714 if (fdctrl->data_dir == FD_DIR_SCANE ||
1715 fdctrl->data_dir == FD_DIR_SCANL ||
1716 fdctrl->data_dir == FD_DIR_SCANH)
1717 status2 = FD_SR2_SEH;
1718 if (FD_DID_SEEK(fdctrl->data_state))
1719 status0 |= FD_SR0_SEEK;
1720 fdctrl->data_len -= len;
1721 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1722transfer_error:
1723
1724 return len;
1725}
1726
1727/* Data register : 0x05 */
1728static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1729{
1730 fdrive_t *cur_drv;
1731 uint32_t retval = 0;
1732 unsigned pos;
1733#ifdef VBOX
1734 int rc;
1735#endif
1736
1737 cur_drv = get_cur_drv(fdctrl);
1738 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1739 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1740 FLOPPY_ERROR("controller not ready for reading\n");
1741 return 0;
1742 }
1743 pos = fdctrl->data_pos;
1744 if (fdctrl->msr & FD_MSR_NONDMA) {
1745 pos %= FD_SECTOR_LEN;
1746 if (pos == 0) {
1747 if (fdctrl->data_pos != 0)
1748 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1749 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1750 fd_sector(cur_drv));
1751 return 0;
1752 }
1753#ifdef VBOX
1754 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1755 if (RT_FAILURE(rc))
1756#else
1757 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0)
1758#endif
1759 {
1760 FLOPPY_DPRINTF("error getting sector %d\n",
1761 fd_sector(cur_drv));
1762 /* Sure, image size is too small... */
1763 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1764 }
1765 }
1766 }
1767 retval = fdctrl->fifo[pos];
1768 if (++fdctrl->data_pos == fdctrl->data_len) {
1769 fdctrl->data_pos = 0;
1770 /* Switch from transfer mode to status mode
1771 * then from status mode to command mode
1772 */
1773 if (fdctrl->msr & FD_MSR_NONDMA) {
1774 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1775 } else {
1776 fdctrl_reset_fifo(fdctrl);
1777 fdctrl_reset_irq(fdctrl);
1778 }
1779 }
1780 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1781
1782 return retval;
1783}
1784
1785static void fdctrl_format_sector(fdctrl_t *fdctrl)
1786{
1787 fdrive_t *cur_drv;
1788 uint8_t kh, kt, ks;
1789#ifdef VBOX
1790 int ok = 0, rc;
1791#endif
1792
1793 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1794 cur_drv = get_cur_drv(fdctrl);
1795 kt = fdctrl->fifo[6];
1796 kh = fdctrl->fifo[7];
1797 ks = fdctrl->fifo[8];
1798 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1799 GET_CUR_DRV(fdctrl), kh, kt, ks,
1800 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1801 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1802 case 2:
1803 /* sect too big */
1804 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1805 fdctrl->fifo[3] = kt;
1806 fdctrl->fifo[4] = kh;
1807 fdctrl->fifo[5] = ks;
1808 return;
1809 case 3:
1810 /* track too big */
1811 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1812 fdctrl->fifo[3] = kt;
1813 fdctrl->fifo[4] = kh;
1814 fdctrl->fifo[5] = ks;
1815 return;
1816 case 4:
1817 /* No seek enabled */
1818 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1819 fdctrl->fifo[3] = kt;
1820 fdctrl->fifo[4] = kh;
1821 fdctrl->fifo[5] = ks;
1822 return;
1823 case 1:
1824 fdctrl->data_state |= FD_STATE_SEEK;
1825 break;
1826 default:
1827 break;
1828 }
1829 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1830#ifdef VBOX
1831 if (cur_drv->pDrvBlock) {
1832 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1833 if (RT_FAILURE (rc)) {
1834 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1835 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1836 } else {
1837 ok = 1;
1838 }
1839 }
1840 if (ok) {
1841#else
1842 if (cur_drv->bs == NULL ||
1843 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1844 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1845 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1846 } else {
1847#endif
1848 if (cur_drv->sect == cur_drv->last_sect) {
1849 fdctrl->data_state &= ~FD_STATE_FORMAT;
1850 /* Last sector done */
1851 if (FD_DID_SEEK(fdctrl->data_state))
1852 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1853 else
1854 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1855 } else {
1856 /* More to do */
1857 fdctrl->data_pos = 0;
1858 fdctrl->data_len = 4;
1859 }
1860 }
1861}
1862
1863static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1864{
1865 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1866 fdctrl->fifo[0] = fdctrl->lock << 4;
1867 fdctrl_set_fifo(fdctrl, 1, 0);
1868}
1869
1870static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1871{
1872 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1873
1874 /* Drives position */
1875 fdctrl->fifo[0] = drv0(fdctrl)->track;
1876 fdctrl->fifo[1] = drv1(fdctrl)->track;
1877#if MAX_FD == 4
1878 fdctrl->fifo[2] = drv2(fdctrl)->track;
1879 fdctrl->fifo[3] = drv3(fdctrl)->track;
1880#else
1881 fdctrl->fifo[2] = 0;
1882 fdctrl->fifo[3] = 0;
1883#endif
1884 /* timers */
1885 fdctrl->fifo[4] = fdctrl->timer0;
1886 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1887 fdctrl->fifo[6] = cur_drv->last_sect;
1888 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1889 (cur_drv->perpendicular << 2);
1890 fdctrl->fifo[8] = fdctrl->config;
1891 fdctrl->fifo[9] = fdctrl->precomp_trk;
1892 fdctrl_set_fifo(fdctrl, 10, 0);
1893}
1894
1895static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1896{
1897 /* Controller's version */
1898 fdctrl->fifo[0] = fdctrl->version;
1899 fdctrl_set_fifo(fdctrl, 1, 0);
1900}
1901
1902static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1903{
1904 fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1905 fdctrl_set_fifo(fdctrl, 1, 0);
1906}
1907
1908static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1909{
1910 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1911
1912 /* Drives position */
1913 drv0(fdctrl)->track = fdctrl->fifo[3];
1914 drv1(fdctrl)->track = fdctrl->fifo[4];
1915#if MAX_FD == 4
1916 drv2(fdctrl)->track = fdctrl->fifo[5];
1917 drv3(fdctrl)->track = fdctrl->fifo[6];
1918#endif
1919 /* timers */
1920 fdctrl->timer0 = fdctrl->fifo[7];
1921 fdctrl->timer1 = fdctrl->fifo[8];
1922 cur_drv->last_sect = fdctrl->fifo[9];
1923 fdctrl->lock = fdctrl->fifo[10] >> 7;
1924 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1925 fdctrl->config = fdctrl->fifo[11];
1926 fdctrl->precomp_trk = fdctrl->fifo[12];
1927 fdctrl->pwrd = fdctrl->fifo[13];
1928 fdctrl_reset_fifo(fdctrl);
1929}
1930
1931static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1932{
1933 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1934
1935 fdctrl->fifo[0] = 0;
1936 fdctrl->fifo[1] = 0;
1937 /* Drives position */
1938 fdctrl->fifo[2] = drv0(fdctrl)->track;
1939 fdctrl->fifo[3] = drv1(fdctrl)->track;
1940#if MAX_FD == 4
1941 fdctrl->fifo[4] = drv2(fdctrl)->track;
1942 fdctrl->fifo[5] = drv3(fdctrl)->track;
1943#else
1944 fdctrl->fifo[4] = 0;
1945 fdctrl->fifo[5] = 0;
1946#endif
1947 /* timers */
1948 fdctrl->fifo[6] = fdctrl->timer0;
1949 fdctrl->fifo[7] = fdctrl->timer1;
1950 fdctrl->fifo[8] = cur_drv->last_sect;
1951 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1952 (cur_drv->perpendicular << 2);
1953 fdctrl->fifo[10] = fdctrl->config;
1954 fdctrl->fifo[11] = fdctrl->precomp_trk;
1955 fdctrl->fifo[12] = fdctrl->pwrd;
1956 fdctrl->fifo[13] = 0;
1957 fdctrl->fifo[14] = 0;
1958 fdctrl_set_fifo(fdctrl, 15, 0);
1959}
1960
1961static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1962{
1963 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1964
1965 FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
1966
1967 /* XXX: should set main status register to busy */
1968 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1969#ifdef VBOX
1970 TMTimerSetMillies(fdctrl->result_timer, 1000 / 50);
1971#else
1972 qemu_mod_timer(fdctrl->result_timer,
1973 qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
1974#endif
1975}
1976
1977static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
1978{
1979 fdrive_t *cur_drv;
1980 uint8_t ns, dp;
1981
1982 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1983 cur_drv = get_cur_drv(fdctrl);
1984 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1985 ns = fdctrl->fifo[3];
1986 dp = fdctrl->fifo[5];
1987
1988 FLOPPY_DPRINTF("Format track %d at %d, %d sectors, filler %02x\n",
1989 cur_drv->track, GET_CUR_DRV(fdctrl), ns, dp);
1990 FLOPPY_DPRINTF("CMD:%02x SEL:%02x N:%02x SC:%02x GPL:%02x D:%02x\n",
1991 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1992 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5]);
1993
1994 /* Since we cannot actually format anything, we have to make sure that
1995 * whatever new format the guest is trying to establish matches the
1996 * existing format of the medium.
1997 */
1998 if (cur_drv->last_sect != ns || fdctrl->fifo[2] != 2)
1999 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_NW, 0);
2000 else
2001 {
2002 cur_drv->bps = fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
2003 cur_drv->last_sect = ns;
2004
2005 fdctrl_start_format(fdctrl);
2006 }
2007}
2008
2009static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
2010{
2011 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
2012 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
2013 if (fdctrl->fifo[2] & 1)
2014 fdctrl->dor &= ~FD_DOR_DMAEN;
2015 else
2016 fdctrl->dor |= FD_DOR_DMAEN;
2017 /* No result back */
2018 fdctrl_reset_fifo(fdctrl);
2019}
2020
2021static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
2022{
2023 fdrive_t *cur_drv;
2024
2025 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2026 cur_drv = get_cur_drv(fdctrl);
2027 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2028 /* 1 Byte status back */
2029 fdctrl->fifo[0] = (cur_drv->ro << 6) |
2030 (cur_drv->track == 0 ? 0x10 : 0x00) |
2031 (cur_drv->head << 2) |
2032 GET_CUR_DRV(fdctrl) |
2033 0x28;
2034 fdctrl_set_fifo(fdctrl, 1, 0);
2035}
2036
2037static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
2038{
2039 fdrive_t *cur_drv;
2040 uint8_t st0;
2041
2042 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2043 cur_drv = get_cur_drv(fdctrl);
2044 fd_recalibrate(cur_drv);
2045 fdctrl_reset_fifo(fdctrl);
2046 st0 = FD_SR0_SEEK | GET_CUR_DRV(fdctrl);
2047 /* No drive means no TRK0 signal. */
2048 if (cur_drv->drive == FDRIVE_DRV_NONE)
2049 st0 |= FD_SR0_ABNTERM | FD_SR0_EQPMT;
2050 /* Raise Interrupt */
2051 fdctrl_raise_irq(fdctrl, st0);
2052}
2053
2054static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
2055{
2056 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2057
2058 FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
2059 if(fdctrl->reset_sensei > 0) {
2060 fdctrl->fifo[0] =
2061 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
2062 fdctrl->reset_sensei--;
2063 } else {
2064 /* XXX: status0 handling is broken for read/write
2065 commands, so we do this hack. It should be suppressed
2066 ASAP */
2067 fdctrl->fifo[0] =
2068 FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
2069 /* Hack to preserve SR0 on equipment check failures (no drive). */
2070 if (fdctrl->status0 & FD_SR0_EQPMT)
2071 fdctrl->fifo[0] = fdctrl->status0;
2072 }
2073
2074 fdctrl->fifo[1] = cur_drv->track;
2075 fdctrl_set_fifo(fdctrl, 2, 0);
2076 FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
2077 fdctrl->status0 = FD_SR0_RDYCHG;
2078}
2079
2080static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
2081{
2082 fdrive_t *cur_drv;
2083
2084 FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
2085 fdctrl->fifo[1], fdctrl->fifo[2]);
2086
2087 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2088 cur_drv = get_cur_drv(fdctrl);
2089 fdctrl_reset_fifo(fdctrl);
2090#ifdef VBOX
2091 /* The seek command just sends step pulses to the drive and doesn't care if
2092 * there's a medium inserted or if it's banging the head against the drive.
2093 */
2094 cur_drv->track = fdctrl->fifo[2];
2095 cur_drv->ltrk = cur_drv->track;
2096 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2097 /* Raise Interrupt */
2098 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK | GET_CUR_DRV(fdctrl));
2099#else
2100 if (fdctrl->fifo[2] > cur_drv->max_track) {
2101 fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
2102 } else {
2103 cur_drv->track = fdctrl->fifo[2];
2104 /* Raise Interrupt */
2105 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2106 }
2107#endif
2108}
2109
2110static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
2111{
2112 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2113
2114 if (fdctrl->fifo[1] & 0x80)
2115 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
2116 /* No result back */
2117 fdctrl_reset_fifo(fdctrl);
2118}
2119
2120static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
2121{
2122 fdctrl->config = fdctrl->fifo[2];
2123 fdctrl->precomp_trk = fdctrl->fifo[3];
2124 /* No result back */
2125 fdctrl_reset_fifo(fdctrl);
2126}
2127
2128static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
2129{
2130 fdctrl->pwrd = fdctrl->fifo[1];
2131 fdctrl->fifo[0] = fdctrl->fifo[1];
2132 fdctrl_set_fifo(fdctrl, 1, 0);
2133}
2134
2135static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
2136{
2137 /* No result back */
2138 fdctrl_reset_fifo(fdctrl);
2139}
2140
2141static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
2142{
2143 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2144
2145 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
2146 /* Command parameters done */
2147 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
2148 fdctrl->fifo[0] = fdctrl->fifo[1];
2149 fdctrl->fifo[2] = 0;
2150 fdctrl->fifo[3] = 0;
2151 fdctrl_set_fifo(fdctrl, 4, 0);
2152 } else {
2153 fdctrl_reset_fifo(fdctrl);
2154 }
2155 } else if (fdctrl->data_len > 7) {
2156 /* ERROR */
2157 fdctrl->fifo[0] = 0x80 |
2158 (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
2159 fdctrl_set_fifo(fdctrl, 1, 0);
2160 }
2161}
2162
2163static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2164{
2165 fdrive_t *cur_drv;
2166
2167 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2168 cur_drv = get_cur_drv(fdctrl);
2169 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2170 cur_drv->track = cur_drv->max_track - 1;
2171 } else {
2172 cur_drv->track += fdctrl->fifo[2];
2173 }
2174 fdctrl_reset_fifo(fdctrl);
2175 /* Raise Interrupt */
2176 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2177}
2178
2179static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2180{
2181 fdrive_t *cur_drv;
2182
2183 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2184 cur_drv = get_cur_drv(fdctrl);
2185 if (fdctrl->fifo[2] > cur_drv->track) {
2186 cur_drv->track = 0;
2187 } else {
2188 cur_drv->track -= fdctrl->fifo[2];
2189 }
2190 fdctrl_reset_fifo(fdctrl);
2191 /* Raise Interrupt */
2192 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2193}
2194
2195static const struct {
2196 uint8_t value;
2197 uint8_t mask;
2198 const char* name;
2199 int parameters;
2200 void (*handler)(fdctrl_t *fdctrl, int direction);
2201 int direction;
2202} handlers[] = {
2203 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2204 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2205 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2206 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2207 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2208 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2209 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2210 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2211 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2212 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2213 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2214 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2215 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2216 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2217 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2218 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2219 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2220 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2221 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2222 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2223 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2224 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2225 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
2226 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2227 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2228 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2229 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2230 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2231 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2232 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2233 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2234 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2235};
2236/* Associate command to an index in the 'handlers' array */
2237static uint8_t command_to_handler[256];
2238
2239static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2240{
2241 fdrive_t *cur_drv;
2242 int pos;
2243
2244 cur_drv = get_cur_drv(fdctrl);
2245 /* Reset mode */
2246 if (!(fdctrl->dor & FD_DOR_nRESET)) {
2247 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2248 return;
2249 }
2250 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
2251 FLOPPY_ERROR("controller not ready for writing\n");
2252 return;
2253 }
2254 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2255 /* Is it write command time ? */
2256 if (fdctrl->msr & FD_MSR_NONDMA) {
2257 /* FIFO data write */
2258 pos = fdctrl->data_pos++;
2259 pos %= FD_SECTOR_LEN;
2260 fdctrl->fifo[pos] = value;
2261 if (pos == FD_SECTOR_LEN - 1 ||
2262 fdctrl->data_pos == fdctrl->data_len) {
2263#ifdef VBOX
2264 blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2265#else
2266 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
2267 fdctrl->fifo, 1);
2268#endif
2269 }
2270 /* Switch from transfer mode to status mode
2271 * then from status mode to command mode
2272 */
2273 if (fdctrl->data_pos == fdctrl->data_len)
2274 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2275 return;
2276 }
2277 if (fdctrl->data_pos == 0) {
2278 /* Command */
2279 fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2280 pos = command_to_handler[value & 0xff];
2281 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2282 fdctrl->data_len = handlers[pos].parameters + 1;
2283 fdctrl->msr |= FD_MSR_CMDBUSY;
2284 }
2285
2286 FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2287 fdctrl->fifo[fdctrl->data_pos++] = value;
2288 if (fdctrl->data_pos == fdctrl->data_len) {
2289 /* We now have all parameters
2290 * and will be able to treat the command
2291 */
2292 if (fdctrl->data_state & FD_STATE_FORMAT) {
2293 fdctrl_format_sector(fdctrl);
2294 return;
2295 }
2296
2297 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2298 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2299 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2300 }
2301}
2302
2303static void fdctrl_result_timer(void *opaque)
2304{
2305 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
2306 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2307
2308 /* Pretend we are spinning.
2309 * This is needed for Coherent, which uses READ ID to check for
2310 * sector interleaving.
2311 */
2312 if (cur_drv->last_sect != 0) {
2313 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2314 }
2315 /* READ_ID can't automatically succeed! */
2316#ifdef VBOX
2317 if (!cur_drv->max_track) {
2318 FLOPPY_DPRINTF("read id when no disk in drive\n");
2319 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2320 } else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2321 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2322 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2323 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2324 } else if (cur_drv->track >= cur_drv->max_track) {
2325 FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2326 cur_drv->track, cur_drv->max_track);
2327 cur_drv->ltrk = 0;
2328 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2329 }
2330 else
2331#endif
2332 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2333}
2334
2335
2336#ifdef VBOX
2337
2338/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2339
2340/**
2341 * @callback_method_impl{FNTMTIMERDEV}
2342 */
2343static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2344{
2345 fdctrl_t *fdctrl = (fdctrl_t *)pvUser;
2346 fdctrl_result_timer(fdctrl);
2347}
2348
2349
2350/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2351
2352/**
2353 * @callback_method_impl{FNIOMIOPORTOUT}
2354 */
2355static DECLCALLBACK(int) fdcIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
2356{
2357 if (cb == 1)
2358 fdctrl_write (pvUser, Port & 7, u32);
2359 else
2360 AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
2361 return VINF_SUCCESS;
2362}
2363
2364
2365/**
2366 * @callback_method_impl{FNIOMIOPORTOUT}
2367 */
2368static DECLCALLBACK(int) fdcIoPortRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t *pu32, unsigned cb)
2369{
2370 if (cb == 1)
2371 {
2372 *pu32 = fdctrl_read (pvUser, Port & 7);
2373 return VINF_SUCCESS;
2374 }
2375 return VERR_IOM_IOPORT_UNUSED;
2376}
2377
2378
2379/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2380
2381/**
2382 * @callback_method_impl{FNSSMDEVSAVEEXEC}
2383 */
2384static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2385{
2386 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2387 unsigned int i;
2388
2389 /* Save the FDC I/O registers... */
2390 SSMR3PutU8(pSSM, pThis->sra);
2391 SSMR3PutU8(pSSM, pThis->srb);
2392 SSMR3PutU8(pSSM, pThis->dor);
2393 SSMR3PutU8(pSSM, pThis->tdr);
2394 SSMR3PutU8(pSSM, pThis->dsr);
2395 SSMR3PutU8(pSSM, pThis->msr);
2396 /* ...the status registers... */
2397 SSMR3PutU8(pSSM, pThis->status0);
2398 SSMR3PutU8(pSSM, pThis->status1);
2399 SSMR3PutU8(pSSM, pThis->status2);
2400 /* ...the command FIFO... */
2401 SSMR3PutU32(pSSM, sizeof(pThis->fifo));
2402 SSMR3PutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2403 SSMR3PutU32(pSSM, pThis->data_pos);
2404 SSMR3PutU32(pSSM, pThis->data_len);
2405 SSMR3PutU8(pSSM, pThis->data_state);
2406 SSMR3PutU8(pSSM, pThis->data_dir);
2407 /* ...and miscellaneous internal FDC state. */
2408 SSMR3PutU8(pSSM, pThis->reset_sensei);
2409 SSMR3PutU8(pSSM, pThis->eot);
2410 SSMR3PutU8(pSSM, pThis->timer0);
2411 SSMR3PutU8(pSSM, pThis->timer1);
2412 SSMR3PutU8(pSSM, pThis->precomp_trk);
2413 SSMR3PutU8(pSSM, pThis->config);
2414 SSMR3PutU8(pSSM, pThis->lock);
2415 SSMR3PutU8(pSSM, pThis->pwrd);
2416 SSMR3PutU8(pSSM, pThis->version);
2417
2418 /* Save the number of drives and per-drive state. Note that the media
2419 * states will be updated in fd_revalidate() and need not be saved.
2420 */
2421 SSMR3PutU8(pSSM, pThis->num_floppies);
2422 Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2423 for (i = 0; i < pThis->num_floppies; ++i)
2424 {
2425 fdrive_t *d = &pThis->drives[i];
2426
2427 SSMR3PutMem(pSSM, &d->Led, sizeof(d->Led));
2428 SSMR3PutU32(pSSM, d->drive);
2429 SSMR3PutU8(pSSM, d->dsk_chg);
2430 SSMR3PutU8(pSSM, d->perpendicular);
2431 SSMR3PutU8(pSSM, d->head);
2432 SSMR3PutU8(pSSM, d->track);
2433 SSMR3PutU8(pSSM, d->sect);
2434 }
2435 return TMR3TimerSave (pThis->result_timer, pSSM);
2436}
2437
2438
2439/**
2440 * @callback_method_impl{FNSSMDEVLOADEXEC}
2441 */
2442static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2443{
2444 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2445 unsigned int i;
2446 uint32_t val32;
2447 uint8_t val8;
2448
2449 if (uVersion > FDC_SAVESTATE_CURRENT)
2450 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2451 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2452
2453 /* The old saved state was significantly different. However, we can get
2454 * back most of the controller state and fix the rest by pretending the
2455 * disk in the drive (if any) has been replaced. At any rate there should
2456 * be no difficulty unless the state was saved during a floppy operation.
2457 */
2458 if (uVersion == FDC_SAVESTATE_OLD)
2459 {
2460 /* First verify a few assumptions. */
2461 AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2462 ("The size of FIFO in saved state doesn't match!\n"),
2463 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2464 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2465 ("The number of drives in old saved state doesn't match!\n"),
2466 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2467 /* Now load the old state. */
2468 SSMR3GetU8(pSSM, &pThis->version);
2469 /* Toss IRQ level, DMA channel, I/O base, and state. */
2470 SSMR3GetU8(pSSM, &val8);
2471 SSMR3GetU8(pSSM, &val8);
2472 SSMR3GetU32(pSSM, &val32);
2473 SSMR3GetU8(pSSM, &val8);
2474 /* Translate dma_en. */
2475 SSMR3GetU8(pSSM, &val8);
2476 if (val8)
2477 pThis->dor |= FD_DOR_DMAEN;
2478 SSMR3GetU8(pSSM, &pThis->cur_drv);
2479 /* Translate bootsel. */
2480 SSMR3GetU8(pSSM, &val8);
2481 pThis->tdr |= val8 << 2;
2482 SSMR3GetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2483 SSMR3GetU32(pSSM, &pThis->data_pos);
2484 SSMR3GetU32(pSSM, &pThis->data_len);
2485 SSMR3GetU8(pSSM, &pThis->data_state);
2486 SSMR3GetU8(pSSM, &pThis->data_dir);
2487 SSMR3GetU8(pSSM, &pThis->status0);
2488 SSMR3GetU8(pSSM, &pThis->eot);
2489 SSMR3GetU8(pSSM, &pThis->timer0);
2490 SSMR3GetU8(pSSM, &pThis->timer1);
2491 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2492 SSMR3GetU8(pSSM, &pThis->config);
2493 SSMR3GetU8(pSSM, &pThis->lock);
2494 SSMR3GetU8(pSSM, &pThis->pwrd);
2495
2496 for (i = 0; i < 2; ++i)
2497 {
2498 fdrive_t *d = &pThis->drives[i];
2499
2500 SSMR3GetMem (pSSM, &d->Led, sizeof (d->Led));
2501 SSMR3GetU32(pSSM, &val32);
2502 d->drive = (fdrive_type_t)val32;
2503 SSMR3GetU32(pSSM, &val32); /* Toss drflags */
2504 SSMR3GetU8(pSSM, &d->perpendicular);
2505 SSMR3GetU8(pSSM, &d->head);
2506 SSMR3GetU8(pSSM, &d->track);
2507 SSMR3GetU8(pSSM, &d->sect);
2508 SSMR3GetU8(pSSM, &val8); /* Toss dir, rw */
2509 SSMR3GetU8(pSSM, &val8);
2510 SSMR3GetU32(pSSM, &val32);
2511 d->flags = (fdrive_flags_t)val32;
2512 SSMR3GetU8(pSSM, &d->last_sect);
2513 SSMR3GetU8(pSSM, &d->max_track);
2514 SSMR3GetU16(pSSM, &d->bps);
2515 SSMR3GetU8(pSSM, &d->ro);
2516 }
2517 }
2518 else /* New state - straightforward. */
2519 {
2520 Assert(uVersion == FDC_SAVESTATE_CURRENT);
2521 /* Load the FDC I/O registers... */
2522 SSMR3GetU8(pSSM, &pThis->sra);
2523 SSMR3GetU8(pSSM, &pThis->srb);
2524 SSMR3GetU8(pSSM, &pThis->dor);
2525 SSMR3GetU8(pSSM, &pThis->tdr);
2526 SSMR3GetU8(pSSM, &pThis->dsr);
2527 SSMR3GetU8(pSSM, &pThis->msr);
2528 /* ...the status registers... */
2529 SSMR3GetU8(pSSM, &pThis->status0);
2530 SSMR3GetU8(pSSM, &pThis->status1);
2531 SSMR3GetU8(pSSM, &pThis->status2);
2532 /* ...the command FIFO, if the size matches... */
2533 SSMR3GetU32(pSSM, &val32);
2534 AssertMsgReturn(sizeof(pThis->fifo) == val32,
2535 ("The size of FIFO in saved state doesn't match!\n"),
2536 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2537 SSMR3GetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2538 SSMR3GetU32(pSSM, &pThis->data_pos);
2539 SSMR3GetU32(pSSM, &pThis->data_len);
2540 SSMR3GetU8(pSSM, &pThis->data_state);
2541 SSMR3GetU8(pSSM, &pThis->data_dir);
2542 /* ...and miscellaneous internal FDC state. */
2543 SSMR3GetU8(pSSM, &pThis->reset_sensei);
2544 SSMR3GetU8(pSSM, &pThis->eot);
2545 SSMR3GetU8(pSSM, &pThis->timer0);
2546 SSMR3GetU8(pSSM, &pThis->timer1);
2547 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2548 SSMR3GetU8(pSSM, &pThis->config);
2549 SSMR3GetU8(pSSM, &pThis->lock);
2550 SSMR3GetU8(pSSM, &pThis->pwrd);
2551 SSMR3GetU8(pSSM, &pThis->version);
2552
2553 /* Validate the number of drives. */
2554 SSMR3GetU8(pSSM, &pThis->num_floppies);
2555 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2556 ("The number of drives in saved state doesn't match!\n"),
2557 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2558
2559 /* Load the per-drive state. */
2560 for (i = 0; i < pThis->num_floppies; ++i)
2561 {
2562 fdrive_t *d = &pThis->drives[i];
2563
2564 SSMR3GetMem(pSSM, &d->Led, sizeof(d->Led));
2565 SSMR3GetU32(pSSM, &val32);
2566 d->drive = (fdrive_type_t)val32;
2567 SSMR3GetU8(pSSM, &d->dsk_chg);
2568 SSMR3GetU8(pSSM, &d->perpendicular);
2569 SSMR3GetU8(pSSM, &d->head);
2570 SSMR3GetU8(pSSM, &d->track);
2571 SSMR3GetU8(pSSM, &d->sect);
2572 }
2573 }
2574 return TMR3TimerLoad (pThis->result_timer, pSSM);
2575}
2576
2577
2578/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2579
2580/**
2581 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2582 */
2583static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2584{
2585 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2586 LogFlow(("fdMountNotify:\n"));
2587 fd_revalidate(pDrv);
2588}
2589
2590
2591/**
2592 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2593 */
2594static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2595{
2596 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2597 LogFlow(("fdUnmountNotify:\n"));
2598 fd_revalidate(pDrv);
2599}
2600
2601
2602/**
2603 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2604 */
2605static DECLCALLBACK(void *) fdQueryInterface (PPDMIBASE pInterface, const char *pszIID)
2606{
2607 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2608
2609 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2610 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBLOCKPORT, &pDrv->IPort);
2611 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2612 return NULL;
2613}
2614
2615
2616/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2617
2618/**
2619 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2620 */
2621static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2622{
2623 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2624 if (iLUN < RT_ELEMENTS(pThis->drives)) {
2625 *ppLed = &pThis->drives[iLUN].Led;
2626 Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2627 return VINF_SUCCESS;
2628 }
2629 return VERR_PDM_LUN_NOT_FOUND;
2630}
2631
2632
2633/**
2634 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2635 */
2636static DECLCALLBACK(void *) fdcStatusQueryInterface(PPDMIBASE pInterface, const char *pszIID)
2637{
2638 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2639
2640 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2641 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2642 return NULL;
2643}
2644
2645
2646/**
2647 * Configure a drive.
2648 *
2649 * @returns VBox status code.
2650 * @param drv The drive in question.
2651 * @param pDevIns The driver instance.
2652 * @param fInit Set if we're at init time and can change the drive type.
2653 */
2654static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2655{
2656 static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2657 int rc;
2658
2659 /*
2660 * Reset the LED just to be on the safe side.
2661 */
2662 Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2663 Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2664 drv->Led.Actual.u32 = 0;
2665 drv->Led.Asserted.u32 = 0;
2666
2667 /*
2668 * Try attach the block device and get the interfaces.
2669 */
2670 rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2671 if (RT_SUCCESS (rc)) {
2672 drv->pDrvBlock = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIBLOCK);
2673 if (drv->pDrvBlock) {
2674 drv->pDrvBlockBios = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIBLOCKBIOS);
2675 if (drv->pDrvBlockBios) {
2676 drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2677 if (drv->pDrvMount) {
2678 fd_init(drv, fInit);
2679 } else {
2680 AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2681 rc = VERR_PDM_MISSING_INTERFACE;
2682 }
2683
2684 } else {
2685 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block BIOS interface!\n", drv->iLUN));
2686 rc = VERR_PDM_MISSING_INTERFACE;
2687 }
2688
2689 } else {
2690 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2691 rc = VERR_PDM_MISSING_INTERFACE;
2692 }
2693 } else {
2694 AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2695 ("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2696 switch (rc) {
2697 case VERR_ACCESS_DENIED:
2698 /* Error already cached by DrvHostBase */
2699 break;
2700 case VERR_PDM_NO_ATTACHED_DRIVER:
2701 /* Legal on architectures without a floppy controller */
2702 break;
2703 default:
2704 rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2705 N_ ("The floppy controller cannot attach to the floppy drive"));
2706 break;
2707 }
2708 }
2709
2710 if (RT_FAILURE (rc)) {
2711 drv->pDrvBase = NULL;
2712 drv->pDrvBlock = NULL;
2713 drv->pDrvBlockBios = NULL;
2714 drv->pDrvMount = NULL;
2715 }
2716 LogFlow (("fdConfig: returns %Rrc\n", rc));
2717 return rc;
2718}
2719
2720
2721/**
2722 * @interface_method_impl{PDMDEVREG,pfnAttach}
2723 *
2724 * This is called when we change block driver for a floppy drive.
2725 */
2726static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2727{
2728 fdctrl_t *fdctrl = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2729 fdrive_t *drv;
2730 int rc;
2731 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2732
2733 AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2734 ("The FDC device does not support hotplugging\n"),
2735 VERR_INVALID_PARAMETER);
2736
2737 /*
2738 * Validate.
2739 */
2740 if (iLUN >= 2) {
2741 AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2742 iLUN));
2743 return VERR_PDM_DEVINS_NO_ATTACH;
2744 }
2745
2746 /*
2747 * Locate the drive and stuff.
2748 */
2749 drv = &fdctrl->drives[iLUN];
2750
2751 /* the usual paranoia */
2752 AssertRelease (!drv->pDrvBase);
2753 AssertRelease (!drv->pDrvBlock);
2754 AssertRelease (!drv->pDrvBlockBios);
2755 AssertRelease (!drv->pDrvMount);
2756
2757 rc = fdConfig (drv, pDevIns, false /*fInit*/);
2758 AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2759 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", rc));
2760 if (RT_SUCCESS(rc)) {
2761 fd_revalidate (drv);
2762 }
2763
2764 LogFlow (("floppyAttach: returns %Rrc\n", rc));
2765 return rc;
2766}
2767
2768
2769/**
2770 * @interface_method_impl{PDMDEVREG,pfnDetach}
2771 *
2772 * The floppy drive has been temporarily 'unplugged'.
2773 */
2774static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2775{
2776 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2777 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2778
2779 switch (iLUN)
2780 {
2781 case 0:
2782 case 1:
2783 {
2784 fdrive_t *drv = &pThis->drives[iLUN];
2785 drv->pDrvBase = NULL;
2786 drv->pDrvBlock = NULL;
2787 drv->pDrvBlockBios = NULL;
2788 drv->pDrvMount = NULL;
2789 break;
2790 }
2791
2792 default:
2793 AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2794 break;
2795 }
2796}
2797
2798
2799/**
2800 * @interface_method_impl{PDMDEVREG,pfnReset}
2801 *
2802 * I haven't check the specs on what's supposed to happen on reset, but we
2803 * should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2804 * at wrong time like we do if this was all void.
2805 */
2806static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2807{
2808 fdctrl_t *pThis = PDMINS_2_DATA (pDevIns, fdctrl_t *);
2809 unsigned i;
2810 LogFlow (("fdcReset:\n"));
2811
2812 fdctrl_reset(pThis, 0);
2813
2814 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2815 fd_revalidate(&pThis->drives[i]);
2816}
2817
2818
2819/**
2820 * @interface_method_impl{PDMDEVREG,pfnConstruct}
2821 */
2822static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2823{
2824 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2825 int rc;
2826 unsigned i, j;
2827 int ii;
2828 bool mem_mapped;
2829 uint16_t io_base;
2830 uint8_t irq_lvl, dma_chann;
2831 PPDMIBASE pBase;
2832
2833 Assert(iInstance == 0);
2834 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2835
2836 /*
2837 * Validate configuration.
2838 */
2839 if (!CFGMR3AreValuesValid(pCfg, "IRQ\0DMA\0MemMapped\0IOBase\0"))
2840 return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2841
2842 /*
2843 * Read the configuration.
2844 */
2845 rc = CFGMR3QueryU8Def(pCfg, "IRQ", &irq_lvl, 6);
2846 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2847
2848 rc = CFGMR3QueryU8Def(pCfg, "DMA", &dma_chann, 2);
2849 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2850
2851 rc = CFGMR3QueryU16Def(pCfg, "IOBase", &io_base, 0x3f0);
2852 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2853
2854 rc = CFGMR3QueryBoolDef(pCfg, "MemMapped", &mem_mapped, false);
2855 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2856
2857 /*
2858 * Initialize data.
2859 */
2860 LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", irq_lvl, dma_chann, io_base));
2861 pThis->pDevIns = pDevIns;
2862 pThis->version = 0x90; /* Intel 82078 controller */
2863 pThis->irq_lvl = irq_lvl;
2864 pThis->dma_chann = dma_chann;
2865 pThis->io_base = io_base;
2866 pThis->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2867 pThis->num_floppies = MAX_FD;
2868
2869 /* Fill 'command_to_handler' lookup table */
2870 for (ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2871 for (j = 0; j < sizeof(command_to_handler); j++)
2872 if ((j & handlers[ii].mask) == handlers[ii].value)
2873 command_to_handler[j] = ii;
2874
2875 pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2876 pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2877
2878 for (i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2879 {
2880 fdrive_t *pDrv = &pThis->drives[i];
2881
2882 pDrv->drive = FDRIVE_DRV_NONE;
2883 pDrv->iLUN = i;
2884
2885 pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2886 pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2887 pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2888 pDrv->Led.u32Magic = PDMLED_MAGIC;
2889 }
2890
2891 /*
2892 * Create the FDC timer.
2893 */
2894 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2895 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->result_timer);
2896 if (RT_FAILURE(rc))
2897 return rc;
2898
2899 /*
2900 * Register DMA channel.
2901 */
2902 if (pThis->dma_chann != 0xff)
2903 {
2904 rc = PDMDevHlpDMARegister(pDevIns, dma_chann, &fdctrl_transfer_handler, pThis);
2905 if (RT_FAILURE(rc))
2906 return rc;
2907 }
2908
2909 /*
2910 * IO / MMIO.
2911 */
2912 if (mem_mapped)
2913 {
2914 AssertMsgFailed(("Memory mapped floppy not support by now\n"));
2915 return VERR_NOT_SUPPORTED;
2916#if 0
2917 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
2918 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
2919 cpu_register_physical_memory(base, 0x08, io_mem);
2920#endif
2921 }
2922 else
2923 {
2924 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x1, 5, pThis,
2925 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#1");
2926 if (RT_FAILURE(rc))
2927 return rc;
2928
2929 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x7, 1, pThis,
2930 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#2");
2931 if (RT_FAILURE(rc))
2932 return rc;
2933 }
2934
2935 /*
2936 * Register the saved state data unit.
2937 */
2938 rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
2939 if (RT_FAILURE(rc))
2940 return rc;
2941
2942 /*
2943 * Attach the status port (optional).
2944 */
2945 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
2946 if (RT_SUCCESS (rc))
2947 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
2948 else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
2949 {
2950 AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
2951 return rc;
2952 }
2953
2954 /*
2955 * Initialize drives.
2956 */
2957 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2958 {
2959 fdrive_t *pDrv = &pThis->drives[i];
2960 rc = fdConfig(pDrv, pDevIns, true /*fInit*/);
2961 if ( RT_FAILURE(rc)
2962 && rc != VERR_PDM_NO_ATTACHED_DRIVER)
2963 {
2964 AssertMsgFailed(("Configuration error: failed to configure drive %d, rc=%Rrc\n", rc));
2965 return rc;
2966 }
2967 }
2968
2969 fdctrl_reset(pThis, 0);
2970
2971 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2972 fd_revalidate(&pThis->drives[i]);
2973
2974 return VINF_SUCCESS;
2975}
2976
2977
2978/**
2979 * The device registration structure.
2980 */
2981const PDMDEVREG g_DeviceFloppyController =
2982{
2983 /* u32Version */
2984 PDM_DEVREG_VERSION,
2985 /* szName */
2986 "i82078",
2987 /* szRCMod */
2988 "",
2989 /* szR0Mod */
2990 "",
2991 /* pszDescription */
2992 "Floppy drive controller (Intel 82078)",
2993 /* fFlags */
2994 PDM_DEVREG_FLAGS_DEFAULT_BITS,
2995 /* fClass */
2996 PDM_DEVREG_CLASS_STORAGE,
2997 /* cMaxInstances */
2998 1,
2999 /* cbInstance */
3000 sizeof(fdctrl_t),
3001 /* pfnConstruct */
3002 fdcConstruct,
3003 /* pfnDestruct */
3004 NULL,
3005 /* pfnRelocate */
3006 NULL,
3007 /* pfnMemSetup */
3008 NULL,
3009 /* pfnPowerOn */
3010 NULL,
3011 /* pfnReset */
3012 fdcReset,
3013 /* pfnSuspend */
3014 NULL,
3015 /* pfnResume */
3016 NULL,
3017 /* pfnAttach */
3018 fdcAttach,
3019 /* pfnDetach */
3020 fdcDetach,
3021 /* pfnQueryInterface. */
3022 NULL,
3023 /* pfnInitComplete */
3024 NULL,
3025 /* pfnPowerOff */
3026 NULL,
3027 /* pfnSoftReset */
3028 NULL,
3029 /* u32VersionEnd */
3030 PDM_DEVREG_VERSION
3031};
3032
3033#endif /* VBOX */
3034
3035/*
3036 * Local Variables:
3037 * mode: c
3038 * c-file-style: "k&r"
3039 * indent-tabs-mode: nil
3040 * End:
3041 */
3042
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