VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/DevFdc.cpp@ 69288

Last change on this file since 69288 was 69046, checked in by vboxsync, 7 years ago

Global: replace fall-through comments with RT_FALL_THRU().
bugref:8192: gcc warnings
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 103.4 KB
Line 
1/* $Id: DevFdc.cpp 69046 2017-10-11 16:11:23Z vboxsync $ */
2/** @file
3 * VBox storage devices - Floppy disk controller
4 */
5
6/*
7 * Copyright (C) 2006-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 * --------------------------------------------------------------------
17 *
18 * This code is based on:
19 *
20 * QEMU Floppy disk emulator (Intel 82078)
21 *
22 * Copyright (c) 2003 Jocelyn Mayer
23 *
24 * Permission is hereby granted, free of charge, to any person obtaining a copy
25 * of this software and associated documentation files (the "Software"), to deal
26 * in the Software without restriction, including without limitation the rights
27 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
28 * copies of the Software, and to permit persons to whom the Software is
29 * furnished to do so, subject to the following conditions:
30 *
31 * The above copyright notice and this permission notice shall be included in
32 * all copies or substantial portions of the Software.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
40 * THE SOFTWARE.
41 *
42 */
43
44
45/*********************************************************************************************************************************
46* Header Files *
47*********************************************************************************************************************************/
48#define LOG_GROUP LOG_GROUP_DEV_FDC
49#include <VBox/vmm/pdmdev.h>
50#include <VBox/vmm/pdmstorageifs.h>
51#include <iprt/assert.h>
52#include <iprt/string.h>
53#include <iprt/uuid.h>
54
55#include "VBoxDD.h"
56
57#define FDC_SAVESTATE_CURRENT 2 /* The new and improved saved state. */
58#define FDC_SAVESTATE_OLD 1 /* The original saved state. */
59
60#define MAX_FD 2
61
62
63/********************************************************/
64/* debug Floppy devices */
65/* #define DEBUG_FLOPPY */
66
67#ifndef VBOX
68 #ifdef DEBUG_FLOPPY
69 #define FLOPPY_DPRINTF(fmt, args...) \
70 do { printf("FLOPPY: " fmt , ##args); } while (0)
71 #endif
72#else /* !VBOX */
73# ifdef LOG_ENABLED
74# define FLOPPY_DPRINTF(...) Log(("floppy: " __VA_ARGS__))
75# else
76# define FLOPPY_DPRINTF(...) do { } while (0)
77# endif
78#endif /* !VBOX */
79
80#ifndef VBOX
81#define FLOPPY_ERROR(fmt, args...) \
82 do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
83#else /* VBOX */
84# define FLOPPY_ERROR RTLogPrintf
85#endif /* VBOX */
86
87#ifdef VBOX
88typedef struct fdctrl_t fdctrl_t;
89#endif /* VBOX */
90
91/********************************************************/
92/* Floppy drive emulation */
93
94#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
95#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
96
97/* Will always be a fixed parameter for us */
98#define FD_SECTOR_LEN 512
99#define FD_SECTOR_SC 2 /* Sector size code */
100#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
101
102/* Floppy disk drive emulation */
103typedef enum fdisk_type_t {
104 FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
105 FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
106 FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
107 FDRIVE_DISK_USER = 0x04, /* User defined geometry */
108 FDRIVE_DISK_NONE = 0x05 /* No disk */
109} fdisk_type_t;
110
111typedef enum fdrive_type_t {
112 FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
113 FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
114 FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
115 FDRIVE_DRV_NONE = 0x03 /* No drive connected */
116#ifdef VBOX
117 , FDRIVE_DRV_FAKE_15_6 = 0x0e /* Fake 15.6 MB drive. */
118 , FDRIVE_DRV_FAKE_63_5 = 0x0f /* Fake 63.5 MB drive. */
119#endif
120} fdrive_type_t;
121
122typedef uint8_t fdrive_flags_t;
123#define FDISK_DBL_SIDES UINT8_C(0x01)
124
125typedef enum fdrive_rate_t {
126 FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
127 FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
128 FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
129 FDRIVE_RATE_1M = 0x03 /* 1 Mbps */
130} fdrive_rate_t;
131
132/**
133 * The status for one drive.
134 *
135 * @implements PDMIBASE
136 * @implements PDMIMEDIAPORT
137 * @implements PDMIMOUNTNOTIFY
138 */
139typedef struct fdrive_t {
140#ifndef VBOX
141 BlockDriverState *bs;
142#else /* VBOX */
143 /** Pointer to the owning device instance. */
144 R3PTRTYPE(PPDMDEVINS) pDevIns;
145 /** Pointer to the attached driver's base interface. */
146 R3PTRTYPE(PPDMIBASE) pDrvBase;
147 /** Pointer to the attached driver's block interface. */
148 R3PTRTYPE(PPDMIMEDIA) pDrvMedia;
149 /** Pointer to the attached driver's mount interface.
150 * This is NULL if the driver isn't a removable unit. */
151 R3PTRTYPE(PPDMIMOUNT) pDrvMount;
152 /** The base interface. */
153 PDMIBASE IBase;
154 /** The block port interface. */
155 PDMIMEDIAPORT IPort;
156 /** The mount notify interface. */
157 PDMIMOUNTNOTIFY IMountNotify;
158 /** The LUN #. */
159 RTUINT iLUN;
160 /** The LED for this LUN. */
161 PDMLED Led;
162#endif
163 /* Drive status */
164 fdrive_type_t drive;
165 uint8_t perpendicular; /* 2.88 MB access mode */
166 uint8_t dsk_chg; /* Disk change line */
167 /* Position */
168 uint8_t head;
169 uint8_t track;
170 uint8_t sect;
171 uint8_t ltrk; /* Logical track */
172 /* Media */
173 fdrive_flags_t flags;
174 uint8_t last_sect; /* Nb sector per track */
175 uint8_t max_track; /* Nb of tracks */
176 uint16_t bps; /* Bytes per sector */
177 uint8_t ro; /* Is read-only */
178 uint8_t media_rate; /* Data rate of medium */
179} fdrive_t;
180
181#define NUM_SIDES(drv) (drv->flags & FDISK_DBL_SIDES ? 2 : 1)
182
183static void fd_init(fdrive_t *drv, bool fInit)
184{
185 /* Drive */
186#ifndef VBOX
187 drv->drive = FDRIVE_DRV_NONE;
188#else /* VBOX */
189 if (fInit) {
190 /* Fixate the drive type at init time if possible. */
191 if (drv->pDrvMedia) {
192 PDMMEDIATYPE enmType = drv->pDrvMedia->pfnGetType(drv->pDrvMedia);
193 switch (enmType) {
194 case PDMMEDIATYPE_FLOPPY_360:
195 case PDMMEDIATYPE_FLOPPY_1_20:
196 drv->drive = FDRIVE_DRV_120;
197 break;
198 case PDMMEDIATYPE_FLOPPY_720:
199 case PDMMEDIATYPE_FLOPPY_1_44:
200 drv->drive = FDRIVE_DRV_144;
201 break;
202 default:
203 AssertFailed();
204 RT_FALL_THRU();
205 case PDMMEDIATYPE_FLOPPY_2_88:
206 drv->drive = FDRIVE_DRV_288;
207 break;
208 case PDMMEDIATYPE_FLOPPY_FAKE_15_6:
209 drv->drive = FDRIVE_DRV_FAKE_15_6;
210 break;
211 case PDMMEDIATYPE_FLOPPY_FAKE_63_5:
212 drv->drive = FDRIVE_DRV_FAKE_63_5;
213 break;
214 }
215 } else {
216 drv->drive = FDRIVE_DRV_NONE;
217 }
218 } /* else: The BIOS (and others) get the drive type via the CMOS, so
219 don't change it after the VM has been constructed. */
220#endif /* VBOX */
221 drv->perpendicular = 0;
222 /* Disk */
223 drv->last_sect = 0;
224 drv->max_track = 0;
225}
226
227static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
228 uint8_t last_sect, uint8_t num_sides)
229{
230 return (((track * num_sides) + head) * last_sect) + sect - 1; /* sect >= 1 */
231}
232
233/* Returns current position, in sectors, for given drive */
234static int fd_sector(fdrive_t *drv)
235{
236 return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect, NUM_SIDES(drv));
237}
238
239/* Seek to a new position:
240 * returns 0 if already on right track
241 * returns 1 if track changed
242 * returns 2 if track is invalid
243 * returns 3 if sector is invalid
244 * returns 4 if seek is disabled
245 * returns 5 if no media in drive
246 */
247static int fd_seek(fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
248 int enable_seek)
249{
250 int sector;
251 int ret;
252
253 if (!drv->last_sect) {
254 FLOPPY_DPRINTF("no disk in drive (max=%d %d %02x %02x)\n",
255 1, (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
256 drv->max_track, drv->last_sect);
257 return 5;
258 }
259 if (track > drv->max_track ||
260 (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
261 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
262 head, track, sect, 1,
263 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
264 drv->max_track, drv->last_sect);
265 return 2;
266 }
267 if (sect > drv->last_sect || sect < 1) {
268 FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
269 head, track, sect, 1,
270 (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
271 drv->max_track, drv->last_sect);
272 return 3;
273 }
274 sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
275 ret = 0;
276 if (sector != fd_sector(drv)) {
277#if 0
278 if (!enable_seek) {
279 FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
280 head, track, sect, 1, drv->max_track, drv->last_sect);
281 return 4;
282 }
283#else
284 RT_NOREF(enable_seek);
285#endif
286 drv->head = head;
287 if (drv->track != track)
288 ret = 1;
289 drv->track = track;
290 drv->sect = sect;
291 }
292 drv->ltrk = drv->track;
293
294 return ret;
295}
296
297/* Set drive back to track 0 */
298static void fd_recalibrate(fdrive_t *drv)
299{
300 FLOPPY_DPRINTF("recalibrate\n");
301 drv->head = 0;
302 drv->track = 0;
303 drv->ltrk = 0;
304 drv->sect = 1;
305}
306
307/* Recognize floppy formats */
308typedef struct fd_format_t {
309 fdrive_type_t drive;
310 fdisk_type_t disk;
311 uint8_t last_sect; /**< Number of sectors. */
312 uint8_t max_track; /**< Number of tracks. */
313 uint8_t max_head; /**< Max head number. */
314 fdrive_rate_t rate;
315 const char *str;
316} fd_format_t;
317
318/* Note: Low-density disks (160K/180K/320K/360K) use 250 Kbps data rate
319 * in 40-track drives, but 300 Kbps in high-capacity 80-track drives.
320 */
321static fd_format_t fd_formats[] = {
322 /* First entry is default format */
323 /* 1.44 MB 3"1/2 floppy disks */
324 { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 3\"1/2", },
325 { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 3\"1/2", },
326 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB 3\"1/2", },
327 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB 3\"1/2", },
328 { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB 3\"1/2", },
329 { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB 3\"1/2", },
330 { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB 3\"1/2", },
331 { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB 3\"1/2", },
332 /* 2.88 MB 3"1/2 floppy disks */
333 { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB 3\"1/2", },
334 { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB 3\"1/2", },
335 { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB 3\"1/2", },
336 { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB 3\"1/2", },
337 { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB 3\"1/2", },
338 /* 720 kB 3"1/2 floppy disks */
339 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 3\"1/2", },
340 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB 3\"1/2", },
341 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB 3\"1/2", },
342 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB 3\"1/2", },
343 { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB 3\"1/2", },
344 { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB 3\"1/2", },
345 /* 1.2 MB 5"1/4 floppy disks */
346 { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 5\"1/4", },
347 { FDRIVE_DRV_120, FDRIVE_DISK_288, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 5\"1/4", }, /* CP Backup 5.25" HD */
348 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB 5\"1/4", },
349 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, FDRIVE_RATE_500K, "1.48 MB 5\"1/4", },
350 { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, FDRIVE_RATE_500K, "1.49 MB 5\"1/4", },
351 { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB 5\"1/4", },
352 /* 720 kB 5"1/4 floppy disks */
353 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, FDRIVE_RATE_250K, "720 kB 5\"1/4", },
354 { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, FDRIVE_RATE_250K, "880 kB 5\"1/4", },
355 /* 360 kB 5"1/4 floppy disks (newer 9-sector formats) */
356 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 5\"1/4", },
357 { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 5\"1/4", },
358 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 5\"1/4", }, /* CP Backup 5.25" DD */
359 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, FDRIVE_RATE_300K, "410 kB 5\"1/4", },
360 { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, FDRIVE_RATE_300K, "420 kB 5\"1/4", },
361 /* 320 kB 5"1/4 floppy disks (old 8-sector formats) */
362 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 5\"1/4", },
363 { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 5\"1/4", },
364 /* 1.2 MB and low density 3"1/2 floppy 'aliases' */
365 { FDRIVE_DRV_144, FDRIVE_DISK_144, 15, 80, 1, FDRIVE_RATE_500K, "1.2 MB 3\"1/2", },
366 { FDRIVE_DRV_144, FDRIVE_DISK_144, 16, 80, 1, FDRIVE_RATE_500K, "1.28 MB 3\"1/2", },
367 { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 40, 1, FDRIVE_RATE_300K, "400 kB 3\"1/2", }, /* CP Backup 5.25" DD */
368 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 1, FDRIVE_RATE_300K, "360 kB 3\"1/2", },
369 { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 40, 0, FDRIVE_RATE_300K, "180 kB 3\"1/2", },
370 { FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 1, FDRIVE_RATE_300K, "320 kB 3\"1/2", },
371 { FDRIVE_DRV_144, FDRIVE_DISK_720, 8, 40, 0, FDRIVE_RATE_300K, "160 kB 3\"1/2", },
372#ifdef VBOX /* For larger than real life floppy images (see DrvBlock.cpp). */
373 /* 15.6 MB fake floppy disk (just need something big). */
374 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 15.6", },
375 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 15.6", },
376 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 15.6", },
377 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 15.6", },
378 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 15.6", },
379 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 15.6", },
380 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 15.6", },
381 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 15.6", },
382 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 15.6", },
383 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 15.6", },
384 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 15.6", },
385 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 15.6", },
386 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 15.6", },
387 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 15.6", },
388 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 15.6", },
389 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 15.6", },
390 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 15.6", },
391 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 15.6", },
392 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 15.6", },
393 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 15.6", },
394 { FDRIVE_DRV_FAKE_15_6, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 15.6", },
395 /* 63.5 MB fake floppy disk (just need something big). */
396 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 255, 255, 1, FDRIVE_RATE_1M, "63.5 MB fake 63.5", },
397 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_USER, 63, 255, 1, FDRIVE_RATE_1M, "15.6 MB fake 63.5", },
398 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 36, 80, 1, FDRIVE_RATE_1M, "2.88 MB fake 63.5", },
399 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 39, 80, 1, FDRIVE_RATE_1M, "3.12 MB fake 63.5", },
400 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 40, 80, 1, FDRIVE_RATE_1M, "3.2 MB fake 63.5", },
401 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 44, 80, 1, FDRIVE_RATE_1M, "3.52 MB fake 63.5", },
402 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_288, 48, 80, 1, FDRIVE_RATE_1M, "3.84 MB fake 63.5", },
403 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 18, 80, 1, FDRIVE_RATE_500K, "1.44 MB fake 63.5", },
404 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 20, 80, 1, FDRIVE_RATE_500K, "1.6 MB fake 63.5", },
405 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 80, 1, FDRIVE_RATE_500K, "1.68 MB fake 63.5", },
406 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 82, 1, FDRIVE_RATE_500K, "1.72 MB fake 63.5", },
407 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 21, 83, 1, FDRIVE_RATE_500K, "1.74 MB fake 63.5", },
408 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 22, 80, 1, FDRIVE_RATE_500K, "1.76 MB fake 63.5", },
409 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 23, 80, 1, FDRIVE_RATE_500K, "1.84 MB fake 63.5", },
410 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_144, 24, 80, 1, FDRIVE_RATE_500K, "1.92 MB fake 63.5", },
411 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 1, FDRIVE_RATE_250K, "720 kB fake 63.5", },
412 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 80, 1, FDRIVE_RATE_250K, "800 kB fake 63.5", },
413 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 82, 1, FDRIVE_RATE_250K, "820 kB fake 63.5", },
414 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 10, 83, 1, FDRIVE_RATE_250K, "830 kB fake 63.5", },
415 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 13, 80, 1, FDRIVE_RATE_250K, "1.04 MB fake 63.5", },
416 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 14, 80, 1, FDRIVE_RATE_250K, "1.12 MB fake 63.5", },
417 { FDRIVE_DRV_FAKE_63_5, FDRIVE_DISK_720, 9, 80, 0, FDRIVE_RATE_250K, "360 kB fake 63.5", },
418#endif
419 /* end */
420 { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, (uint8_t)-1, (uint8_t)-1, 0, (fdrive_rate_t)0, NULL, },
421};
422
423/* Revalidate a disk drive after a disk change */
424static void fd_revalidate(fdrive_t *drv)
425{
426 const fd_format_t *parse;
427 uint64_t nb_sectors, size;
428 int i, first_match, match;
429 int nb_heads, max_track, last_sect, ro;
430
431 FLOPPY_DPRINTF("revalidate\n");
432#ifndef VBOX
433 if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
434 ro = bdrv_is_read_only(drv->bs);
435 bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
436#else /* VBOX */
437 if ( drv->pDrvMedia
438 && drv->pDrvMount
439 && drv->pDrvMount->pfnIsMounted (drv->pDrvMount)) {
440 ro = drv->pDrvMedia->pfnIsReadOnly (drv->pDrvMedia);
441 nb_heads = max_track = last_sect = 0;
442#endif /* VBOX */
443 if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
444 FLOPPY_DPRINTF("User defined disk (%d %d %d)",
445 nb_heads - 1, max_track, last_sect);
446 } else {
447#ifndef VBOX
448 bdrv_get_geometry(drv->bs, &nb_sectors);
449#else /* VBOX */
450 {
451 uint64_t size2 = drv->pDrvMedia->pfnGetSize (drv->pDrvMedia);
452 nb_sectors = size2 / FD_SECTOR_LEN;
453 }
454#endif /* VBOX */
455 match = -1;
456 first_match = -1;
457 for (i = 0;; i++) {
458 parse = &fd_formats[i];
459 if (parse->drive == FDRIVE_DRV_NONE)
460 break;
461 if (drv->drive == parse->drive ||
462 drv->drive == FDRIVE_DRV_NONE) {
463 size = (parse->max_head + 1) * parse->max_track *
464 parse->last_sect;
465 if (nb_sectors == size) {
466 match = i;
467 break;
468 }
469 if (first_match == -1)
470 first_match = i;
471 }
472 }
473 if (match == -1) {
474 if (first_match == -1)
475 match = 1;
476 else
477 match = first_match;
478 parse = &fd_formats[match];
479 }
480 nb_heads = parse->max_head + 1;
481 max_track = parse->max_track;
482 last_sect = parse->last_sect;
483 drv->drive = parse->drive;
484#ifdef VBOX
485 drv->media_rate = parse->rate;
486#endif
487 FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
488 nb_heads, max_track, last_sect, ro ? "ro" : "rw");
489 LogRel(("FDC: %s floppy disk (%d h %d t %d s) %s\n", parse->str,
490 nb_heads, max_track, last_sect, ro ? "ro" : "rw"));
491 }
492 if (nb_heads == 1) {
493 drv->flags &= ~FDISK_DBL_SIDES;
494 } else {
495 drv->flags |= FDISK_DBL_SIDES;
496 }
497 drv->max_track = max_track;
498 drv->last_sect = last_sect;
499 drv->ro = ro;
500 } else {
501 FLOPPY_DPRINTF("No disk in drive\n");
502 drv->last_sect = 0;
503 drv->max_track = 0;
504 drv->flags &= ~FDISK_DBL_SIDES;
505 drv->dsk_chg = true; /* Disk change line active. */
506 }
507}
508
509/********************************************************/
510/* Intel 82078 floppy disk controller emulation */
511
512static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq);
513static void fdctrl_reset_fifo(fdctrl_t *fdctrl);
514#ifndef VBOX
515static int fdctrl_transfer_handler (void *opaque, int nchan,
516 int dma_pos, int dma_len);
517#else /* VBOX: */
518static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
519 void *opaque,
520 unsigned nchan,
521 uint32_t dma_pos,
522 uint32_t dma_len);
523#endif /* VBOX */
524static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0);
525static fdrive_t *get_cur_drv(fdctrl_t *fdctrl);
526
527static void fdctrl_result_timer(void *opaque);
528static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl);
529static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl);
530static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl);
531static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value);
532static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl);
533static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value);
534static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl);
535static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value);
536static uint32_t fdctrl_read_data(fdctrl_t *fdctrl);
537static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value);
538static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl);
539static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value);
540
541enum {
542 FD_DIR_WRITE = 0,
543 FD_DIR_READ = 1,
544 FD_DIR_SCANE = 2,
545 FD_DIR_SCANL = 3,
546 FD_DIR_SCANH = 4,
547 FD_DIR_FORMAT = 5
548};
549
550enum {
551 FD_STATE_MULTI = 0x01, /* multi track flag */
552 FD_STATE_FORMAT = 0x02, /* format flag */
553 FD_STATE_SEEK = 0x04 /* seek flag */
554};
555
556enum {
557 FD_REG_SRA = 0x00,
558 FD_REG_SRB = 0x01,
559 FD_REG_DOR = 0x02,
560 FD_REG_TDR = 0x03,
561 FD_REG_MSR = 0x04,
562 FD_REG_DSR = 0x04,
563 FD_REG_FIFO = 0x05,
564 FD_REG_DIR = 0x07,
565 FD_REG_CCR = 0x07
566};
567
568enum {
569 FD_CMD_READ_TRACK = 0x02,
570 FD_CMD_SPECIFY = 0x03,
571 FD_CMD_SENSE_DRIVE_STATUS = 0x04,
572 FD_CMD_WRITE = 0x05,
573 FD_CMD_READ = 0x06,
574 FD_CMD_RECALIBRATE = 0x07,
575 FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
576 FD_CMD_WRITE_DELETED = 0x09,
577 FD_CMD_READ_ID = 0x0a,
578 FD_CMD_READ_DELETED = 0x0c,
579 FD_CMD_FORMAT_TRACK = 0x0d,
580 FD_CMD_DUMPREG = 0x0e,
581 FD_CMD_SEEK = 0x0f,
582 FD_CMD_VERSION = 0x10,
583 FD_CMD_SCAN_EQUAL = 0x11,
584 FD_CMD_PERPENDICULAR_MODE = 0x12,
585 FD_CMD_CONFIGURE = 0x13,
586 FD_CMD_LOCK = 0x14,
587 FD_CMD_VERIFY = 0x16,
588 FD_CMD_POWERDOWN_MODE = 0x17,
589 FD_CMD_PART_ID = 0x18,
590 FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
591 FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
592 FD_CMD_SAVE = 0x2e,
593 FD_CMD_OPTION = 0x33,
594 FD_CMD_RESTORE = 0x4e,
595 FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
596 FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
597 FD_CMD_FORMAT_AND_WRITE = 0xcd,
598 FD_CMD_RELATIVE_SEEK_IN = 0xcf
599};
600
601enum {
602 FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
603 FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
604 FD_CONFIG_POLL = 0x10, /* Poll enabled */
605 FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
606 FD_CONFIG_EIS = 0x40 /* No implied seeks */
607};
608
609enum {
610 FD_SR0_EQPMT = 0x10,
611 FD_SR0_SEEK = 0x20,
612 FD_SR0_ABNTERM = 0x40,
613 FD_SR0_INVCMD = 0x80,
614 FD_SR0_RDYCHG = 0xc0
615};
616
617enum {
618 FD_SR1_MA = 0x01, /* Missing address mark */
619 FD_SR1_NW = 0x02, /* Not writable */
620 FD_SR1_ND = 0x04, /* No data */
621 FD_SR1_EC = 0x80 /* End of cylinder */
622};
623
624enum {
625 FD_SR2_MD = 0x01, /* Missing data address mark */
626 FD_SR2_SNS = 0x04, /* Scan not satisfied */
627 FD_SR2_SEH = 0x08 /* Scan equal hit */
628};
629
630enum {
631 FD_SRA_DIR = 0x01,
632 FD_SRA_nWP = 0x02,
633 FD_SRA_nINDX = 0x04,
634 FD_SRA_HDSEL = 0x08,
635 FD_SRA_nTRK0 = 0x10,
636 FD_SRA_STEP = 0x20,
637 FD_SRA_nDRV2 = 0x40,
638 FD_SRA_INTPEND = 0x80
639};
640
641enum {
642 FD_SRB_MTR0 = 0x01,
643 FD_SRB_MTR1 = 0x02,
644 FD_SRB_WGATE = 0x04,
645 FD_SRB_RDATA = 0x08,
646 FD_SRB_WDATA = 0x10,
647 FD_SRB_DR0 = 0x20
648};
649
650enum {
651#if MAX_FD == 4
652 FD_DOR_SELMASK = 0x03,
653#else
654 FD_DOR_SELMASK = 0x01,
655#endif
656 FD_DOR_nRESET = 0x04,
657 FD_DOR_DMAEN = 0x08,
658 FD_DOR_MOTEN0 = 0x10,
659 FD_DOR_MOTEN1 = 0x20,
660 FD_DOR_MOTEN2 = 0x40,
661 FD_DOR_MOTEN3 = 0x80
662};
663
664enum {
665#if MAX_FD == 4
666 FD_TDR_BOOTSEL = 0x0c
667#else
668 FD_TDR_BOOTSEL = 0x04
669#endif
670};
671
672enum {
673 FD_DSR_DRATEMASK= 0x03,
674 FD_DSR_PWRDOWN = 0x40,
675 FD_DSR_SWRESET = 0x80
676};
677
678enum {
679 FD_MSR_DRV0BUSY = 0x01,
680 FD_MSR_DRV1BUSY = 0x02,
681 FD_MSR_DRV2BUSY = 0x04,
682 FD_MSR_DRV3BUSY = 0x08,
683 FD_MSR_CMDBUSY = 0x10,
684 FD_MSR_NONDMA = 0x20,
685 FD_MSR_DIO = 0x40,
686 FD_MSR_RQM = 0x80
687};
688
689enum {
690 FD_DIR_DSKCHG = 0x80
691};
692
693#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
694#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
695#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
696
697#ifdef VBOX
698/**
699 * Floppy controller state.
700 *
701 * @implements PDMILEDPORTS
702 */
703#endif
704struct fdctrl_t {
705#ifndef VBOX
706 fdctrl_t *fdctrl;
707#endif
708 /* Controller's identification */
709 uint8_t version;
710 /* HW */
711#ifndef VBOX
712 int irq;
713 int dma_chann;
714#else
715 uint8_t irq_lvl;
716 uint8_t dma_chann;
717#endif
718 uint32_t io_base;
719 /* Controller state */
720#ifndef VBOX
721 QEMUTimer *result_timer;
722#else
723 struct TMTIMER *result_timer;
724#endif
725 uint8_t sra;
726 uint8_t srb;
727 uint8_t dor;
728 uint8_t tdr;
729 uint8_t dsr;
730 uint8_t msr;
731 uint8_t cur_drv;
732 uint8_t status0;
733 uint8_t status1;
734 uint8_t status2;
735 /* Command FIFO */
736 uint8_t fifo[FD_SECTOR_LEN];
737 uint32_t data_pos;
738 uint32_t data_len;
739 uint8_t data_state;
740 uint8_t data_dir;
741 uint8_t eot; /* last wanted sector */
742 /* States kept only to be returned back */
743 /* Timers state */
744 uint8_t timer0;
745 uint8_t timer1;
746 /* precompensation */
747 uint8_t precomp_trk;
748 uint8_t config;
749 uint8_t lock;
750 /* Power down config (also with status regB access mode */
751 uint8_t pwrd;
752 /* Floppy drives */
753 uint8_t num_floppies;
754 fdrive_t drives[MAX_FD];
755 uint8_t reset_sensei;
756#ifdef VBOX
757 /** Pointer to device instance. */
758 PPDMDEVINS pDevIns;
759
760 /** Status LUN: The base interface. */
761 PDMIBASE IBaseStatus;
762 /** Status LUN: The Leds interface. */
763 PDMILEDPORTS ILeds;
764 /** Status LUN: The Partner of ILeds. */
765 PPDMILEDCONNECTORS pLedsConnector;
766#endif
767};
768
769static uint32_t fdctrl_read (void *opaque, uint32_t reg)
770{
771 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
772 uint32_t retval;
773
774 switch (reg) {
775 case FD_REG_SRA:
776 retval = fdctrl_read_statusA(fdctrl);
777 break;
778 case FD_REG_SRB:
779 retval = fdctrl_read_statusB(fdctrl);
780 break;
781 case FD_REG_DOR:
782 retval = fdctrl_read_dor(fdctrl);
783 break;
784 case FD_REG_TDR:
785 retval = fdctrl_read_tape(fdctrl);
786 break;
787 case FD_REG_MSR:
788 retval = fdctrl_read_main_status(fdctrl);
789 break;
790 case FD_REG_FIFO:
791 retval = fdctrl_read_data(fdctrl);
792 break;
793 case FD_REG_DIR:
794 retval = fdctrl_read_dir(fdctrl);
795 break;
796 default:
797 retval = (uint32_t)(-1);
798 break;
799 }
800 FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
801
802 return retval;
803}
804
805static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
806{
807 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
808
809 FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
810
811 switch (reg) {
812 case FD_REG_DOR:
813 fdctrl_write_dor(fdctrl, value);
814 break;
815 case FD_REG_TDR:
816 fdctrl_write_tape(fdctrl, value);
817 break;
818 case FD_REG_DSR:
819 fdctrl_write_rate(fdctrl, value);
820 break;
821 case FD_REG_FIFO:
822 fdctrl_write_data(fdctrl, value);
823 break;
824 case FD_REG_CCR:
825 fdctrl_write_ccr(fdctrl, value);
826 break;
827 default:
828 break;
829 }
830}
831
832/* Change IRQ state */
833static void fdctrl_reset_irq(fdctrl_t *fdctrl)
834{
835 if (!(fdctrl->sra & FD_SRA_INTPEND))
836 return;
837 FLOPPY_DPRINTF("Reset interrupt\n");
838#ifdef VBOX
839 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 0);
840#else
841 qemu_set_irq(fdctrl->irq, 0);
842#endif
843 fdctrl->sra &= ~FD_SRA_INTPEND;
844}
845
846static void fdctrl_raise_irq(fdctrl_t *fdctrl, uint8_t status0)
847{
848 if (!(fdctrl->sra & FD_SRA_INTPEND)) {
849 FLOPPY_DPRINTF("Raising interrupt...\n");
850#ifdef VBOX
851 PDMDevHlpISASetIrq (fdctrl->pDevIns, fdctrl->irq_lvl, 1);
852#else
853 qemu_set_irq(fdctrl->irq, 1);
854#endif
855 fdctrl->sra |= FD_SRA_INTPEND;
856 }
857 if (status0 & FD_SR0_SEEK) {
858 fdrive_t *cur_drv;
859
860 /* A seek clears the disk change line (if a disk is inserted). */
861 cur_drv = get_cur_drv(fdctrl);
862 if (cur_drv->max_track)
863 cur_drv->dsk_chg = false;
864 }
865
866 fdctrl->reset_sensei = 0;
867 fdctrl->status0 = status0;
868 FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
869}
870
871/* Reset controller */
872static void fdctrl_reset(fdctrl_t *fdctrl, int do_irq)
873{
874 int i;
875
876 FLOPPY_DPRINTF("reset controller\n");
877 fdctrl_reset_irq(fdctrl);
878 /* Initialise controller */
879 fdctrl->sra = 0;
880 fdctrl->srb = 0xc0;
881#ifdef VBOX
882 if (!fdctrl->drives[1].pDrvMedia)
883#else
884 if (!fdctrl->drives[1].bs)
885#endif
886 fdctrl->sra |= FD_SRA_nDRV2;
887 fdctrl->cur_drv = 0;
888 fdctrl->dor = FD_DOR_nRESET;
889 fdctrl->dor |= (fdctrl->dma_chann != 0xff) ? FD_DOR_DMAEN : 0;
890 fdctrl->msr = FD_MSR_RQM;
891 /* FIFO state */
892 fdctrl->data_pos = 0;
893 fdctrl->data_len = 0;
894 fdctrl->data_state = 0;
895 fdctrl->data_dir = FD_DIR_WRITE;
896 for (i = 0; i < MAX_FD; i++)
897 fd_recalibrate(&fdctrl->drives[i]);
898 fdctrl_reset_fifo(fdctrl);
899 if (do_irq) {
900 fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
901 fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
902 }
903}
904
905static inline fdrive_t *drv0(fdctrl_t *fdctrl)
906{
907 return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
908}
909
910static inline fdrive_t *drv1(fdctrl_t *fdctrl)
911{
912 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
913 return &fdctrl->drives[1];
914 else
915 return &fdctrl->drives[0];
916}
917
918#if MAX_FD == 4
919static inline fdrive_t *drv2(fdctrl_t *fdctrl)
920{
921 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
922 return &fdctrl->drives[2];
923 else
924 return &fdctrl->drives[1];
925}
926
927static inline fdrive_t *drv3(fdctrl_t *fdctrl)
928{
929 if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
930 return &fdctrl->drives[3];
931 else
932 return &fdctrl->drives[2];
933}
934#endif
935
936static fdrive_t *get_cur_drv(fdctrl_t *fdctrl)
937{
938 switch (fdctrl->cur_drv) {
939 case 0: return drv0(fdctrl);
940 case 1: return drv1(fdctrl);
941#if MAX_FD == 4
942 case 2: return drv2(fdctrl);
943 case 3: return drv3(fdctrl);
944#endif
945 default: return NULL;
946 }
947}
948
949/* Status A register : 0x00 (read-only) */
950static uint32_t fdctrl_read_statusA(fdctrl_t *fdctrl)
951{
952 uint32_t retval = fdctrl->sra;
953
954 FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
955
956 return retval;
957}
958
959/* Status B register : 0x01 (read-only) */
960static uint32_t fdctrl_read_statusB(fdctrl_t *fdctrl)
961{
962 uint32_t retval = fdctrl->srb;
963
964 FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
965
966 return retval;
967}
968
969/* Digital output register : 0x02 */
970static uint32_t fdctrl_read_dor(fdctrl_t *fdctrl)
971{
972 uint32_t retval = fdctrl->dor;
973
974 /* Selected drive */
975 retval |= fdctrl->cur_drv;
976 FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
977
978 return retval;
979}
980
981static void fdctrl_write_dor(fdctrl_t *fdctrl, uint32_t value)
982{
983 FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
984
985 /* Motors */
986 if (value & FD_DOR_MOTEN0)
987 fdctrl->srb |= FD_SRB_MTR0;
988 else
989 fdctrl->srb &= ~FD_SRB_MTR0;
990 if (value & FD_DOR_MOTEN1)
991 fdctrl->srb |= FD_SRB_MTR1;
992 else
993 fdctrl->srb &= ~FD_SRB_MTR1;
994
995 /* Drive */
996 if (value & 1)
997 fdctrl->srb |= FD_SRB_DR0;
998 else
999 fdctrl->srb &= ~FD_SRB_DR0;
1000
1001 /* Reset */
1002 if (!(value & FD_DOR_nRESET)) {
1003 if (fdctrl->dor & FD_DOR_nRESET) {
1004 FLOPPY_DPRINTF("controller enter RESET state\n");
1005 }
1006 } else {
1007 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1008 FLOPPY_DPRINTF("controller out of RESET state\n");
1009 fdctrl_reset(fdctrl, 1);
1010 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1011 }
1012 }
1013 /* Selected drive */
1014 fdctrl->cur_drv = value & FD_DOR_SELMASK;
1015
1016 fdctrl->dor = value;
1017}
1018
1019/* Tape drive register : 0x03 */
1020static uint32_t fdctrl_read_tape(fdctrl_t *fdctrl)
1021{
1022 uint32_t retval = fdctrl->tdr;
1023
1024 FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
1025
1026 return retval;
1027}
1028
1029static void fdctrl_write_tape(fdctrl_t *fdctrl, uint32_t value)
1030{
1031 /* Reset mode */
1032 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1033 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1034 return;
1035 }
1036 FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
1037 /* Disk boot selection indicator */
1038 fdctrl->tdr = value & FD_TDR_BOOTSEL;
1039 /* Tape indicators: never allow */
1040}
1041
1042/* Main status register : 0x04 (read) */
1043static uint32_t fdctrl_read_main_status(fdctrl_t *fdctrl)
1044{
1045 uint32_t retval = fdctrl->msr;
1046
1047 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1048 fdctrl->dor |= FD_DOR_nRESET;
1049
1050 FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
1051
1052 return retval;
1053}
1054
1055/* Data select rate register : 0x04 (write) */
1056static void fdctrl_write_rate(fdctrl_t *fdctrl, uint32_t value)
1057{
1058 /* Reset mode */
1059 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1060 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1061 return;
1062 }
1063 FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
1064 /* Reset: autoclear */
1065 if (value & FD_DSR_SWRESET) {
1066 fdctrl->dor &= ~FD_DOR_nRESET;
1067 fdctrl_reset(fdctrl, 1);
1068 fdctrl->dor |= FD_DOR_nRESET;
1069 }
1070 if (value & FD_DSR_PWRDOWN) {
1071 fdctrl_reset(fdctrl, 1);
1072 }
1073 fdctrl->dsr = value;
1074}
1075
1076/* Configuration control register : 0x07 (write) */
1077static void fdctrl_write_ccr(fdctrl_t *fdctrl, uint32_t value)
1078{
1079 /* Reset mode */
1080 if (!(fdctrl->dor & FD_DOR_nRESET)) {
1081 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1082 return;
1083 }
1084 FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
1085
1086 /* Only the rate selection bits used in AT mode, and we
1087 * store those in the DSR.
1088 */
1089 fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) | (value & FD_DSR_DRATEMASK);
1090}
1091
1092static int fdctrl_media_changed(fdrive_t *drv)
1093{
1094#ifdef VBOX
1095 return drv->dsk_chg;
1096#else
1097 int ret;
1098
1099 if (!drv->bs)
1100 return 0;
1101 ret = bdrv_media_changed(drv->bs);
1102 if (ret) {
1103 fd_revalidate(drv);
1104 }
1105 return ret;
1106#endif
1107}
1108
1109/* Digital input register : 0x07 (read-only) */
1110static uint32_t fdctrl_read_dir(fdctrl_t *fdctrl)
1111{
1112 uint32_t retval = 0;
1113
1114#ifdef VBOX
1115 /* The change line signal is reported by the currently selected
1116 * drive. If the corresponding motor on bit is not set, the drive
1117 * is *not* selected!
1118 */
1119 if (fdctrl_media_changed(get_cur_drv(fdctrl))
1120 && (fdctrl->dor & (0x10 << fdctrl->cur_drv)))
1121#else
1122 if (fdctrl_media_changed(drv0(fdctrl))
1123 || fdctrl_media_changed(drv1(fdctrl))
1124#if MAX_FD == 4
1125 || fdctrl_media_changed(drv2(fdctrl))
1126 || fdctrl_media_changed(drv3(fdctrl))
1127#endif
1128 )
1129#endif
1130 retval |= FD_DIR_DSKCHG;
1131 if (retval != 0)
1132 FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1133
1134 return retval;
1135}
1136
1137/* FIFO state control */
1138static void fdctrl_reset_fifo(fdctrl_t *fdctrl)
1139{
1140 fdctrl->data_dir = FD_DIR_WRITE;
1141 fdctrl->data_pos = 0;
1142 fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1143}
1144
1145/* Set FIFO status for the host to read */
1146static void fdctrl_set_fifo(fdctrl_t *fdctrl, int fifo_len, int do_irq)
1147{
1148 fdctrl->data_dir = FD_DIR_READ;
1149 fdctrl->data_len = fifo_len;
1150 fdctrl->data_pos = 0;
1151 fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1152 if (do_irq)
1153 fdctrl_raise_irq(fdctrl, 0x00);
1154}
1155
1156/* Set an error: unimplemented/unknown command */
1157static void fdctrl_unimplemented(fdctrl_t *fdctrl, int direction)
1158{
1159 RT_NOREF(direction);
1160 FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1161 fdctrl->fifo[0] = FD_SR0_INVCMD;
1162 fdctrl_set_fifo(fdctrl, 1, 0);
1163}
1164
1165/* Seek to next sector */
1166static int fdctrl_seek_to_next_sect(fdctrl_t *fdctrl, fdrive_t *cur_drv)
1167{
1168 FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1169 cur_drv->head, cur_drv->track, cur_drv->sect,
1170 fd_sector(cur_drv));
1171 /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1172 error in fact */
1173 if (cur_drv->sect >= cur_drv->last_sect ||
1174 cur_drv->sect == fdctrl->eot) {
1175 cur_drv->sect = 1;
1176 if (FD_MULTI_TRACK(fdctrl->data_state)) {
1177 if (cur_drv->head == 0 &&
1178 (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1179 cur_drv->head = 1;
1180 } else {
1181 cur_drv->head = 0;
1182 cur_drv->ltrk++;
1183 if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1184 return 0;
1185 }
1186 } else {
1187 cur_drv->ltrk++;
1188 return 0;
1189 }
1190 FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1191 cur_drv->head, cur_drv->track,
1192 cur_drv->sect, fd_sector(cur_drv));
1193 } else {
1194 cur_drv->sect++;
1195 }
1196 return 1;
1197}
1198
1199/* Callback for transfer end (stop or abort) */
1200static void fdctrl_stop_transfer(fdctrl_t *fdctrl, uint8_t status0,
1201 uint8_t status1, uint8_t status2)
1202{
1203 fdrive_t *cur_drv;
1204
1205 cur_drv = get_cur_drv(fdctrl);
1206 FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1207 status0, status1, status2,
1208 status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1209 fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1210 fdctrl->fifo[1] = status1;
1211 fdctrl->fifo[2] = status2;
1212 fdctrl->fifo[3] = cur_drv->ltrk;
1213 fdctrl->fifo[4] = cur_drv->head;
1214 fdctrl->fifo[5] = cur_drv->sect;
1215 fdctrl->fifo[6] = FD_SECTOR_SC;
1216 FLOPPY_DPRINTF("ST0:%02x ST1:%02x ST2:%02x C:%02x H:%02x R:%02x N:%02x\n",
1217 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2], fdctrl->fifo[3],
1218 fdctrl->fifo[4], fdctrl->fifo[5], fdctrl->fifo[6]);
1219
1220 fdctrl->data_dir = FD_DIR_READ;
1221 if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1222#ifdef VBOX
1223 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 0);
1224#else
1225 DMA_release_DREQ(fdctrl->dma_chann);
1226#endif
1227 }
1228 fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1229 fdctrl->msr &= ~FD_MSR_NONDMA;
1230 fdctrl_set_fifo(fdctrl, 7, 1);
1231}
1232
1233/* Prepare a data transfer (either DMA or FIFO) */
1234static void fdctrl_start_transfer(fdctrl_t *fdctrl, int direction)
1235{
1236 fdrive_t *cur_drv;
1237 uint8_t kh, kt, ks;
1238 int did_seek = 0;
1239
1240 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1241 cur_drv = get_cur_drv(fdctrl);
1242 kt = fdctrl->fifo[2];
1243 kh = fdctrl->fifo[3];
1244 ks = fdctrl->fifo[4];
1245 FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1246 GET_CUR_DRV(fdctrl), kh, kt, ks,
1247 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1248 FLOPPY_DPRINTF("CMD:%02x SEL:%02x C:%02x H:%02x R:%02x N:%02x EOT:%02x GPL:%02x DTL:%02x\n",
1249 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
1250 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5],
1251 fdctrl->fifo[6], fdctrl->fifo[7], fdctrl->fifo[8]);
1252 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1253 case 2:
1254 /* sect too big */
1255 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1256 fdctrl->fifo[3] = kt;
1257 fdctrl->fifo[4] = kh;
1258 fdctrl->fifo[5] = ks;
1259 return;
1260 case 3:
1261 /* track too big */
1262 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1263 fdctrl->fifo[3] = kt;
1264 fdctrl->fifo[4] = kh;
1265 fdctrl->fifo[5] = ks;
1266 return;
1267 case 4:
1268 /* No seek enabled */
1269 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1270 fdctrl->fifo[3] = kt;
1271 fdctrl->fifo[4] = kh;
1272 fdctrl->fifo[5] = ks;
1273 return;
1274 case 5:
1275 /* No disk in drive */
1276 /// @todo This is wrong! Command should not complete.
1277 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | 0x08, /*FD_SR1_MA |*/ FD_SR1_ND, 0x00);
1278 fdctrl->fifo[3] = kt;
1279 fdctrl->fifo[4] = kh;
1280 fdctrl->fifo[5] = ks;
1281 return;
1282 case 1:
1283 did_seek = 1;
1284 break;
1285 default:
1286 break;
1287 }
1288 /* Check the data rate. If the programmed data rate does not match
1289 * the currently inserted medium, the operation has to fail.
1290 */
1291#ifdef VBOX
1292 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1293 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1294 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1295 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1296 fdctrl->fifo[3] = kt;
1297 fdctrl->fifo[4] = kh;
1298 fdctrl->fifo[5] = ks;
1299 return;
1300 }
1301#endif
1302 /* Set the FIFO state */
1303 fdctrl->data_dir = direction;
1304 fdctrl->data_pos = 0;
1305 fdctrl->msr |= FD_MSR_CMDBUSY;
1306 if (fdctrl->fifo[0] & 0x80)
1307 fdctrl->data_state |= FD_STATE_MULTI;
1308 else
1309 fdctrl->data_state &= ~FD_STATE_MULTI;
1310 if (did_seek)
1311 fdctrl->data_state |= FD_STATE_SEEK;
1312 else
1313 fdctrl->data_state &= ~FD_STATE_SEEK;
1314 if (fdctrl->fifo[5] == 00) {
1315 fdctrl->data_len = fdctrl->fifo[8];
1316 } else {
1317 int tmp;
1318 fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1319 tmp = (fdctrl->fifo[6] - ks + 1);
1320 if (fdctrl->fifo[0] & 0x80)
1321 tmp += fdctrl->fifo[6];
1322 fdctrl->data_len *= tmp;
1323 }
1324 fdctrl->eot = fdctrl->fifo[6];
1325 if (fdctrl->dor & FD_DOR_DMAEN) {
1326 int dma_mode;
1327 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1328#ifndef VBOX
1329 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1330#else
1331 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1332#endif
1333 dma_mode = (dma_mode >> 2) & 3;
1334 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1335 dma_mode, direction,
1336 (128 << fdctrl->fifo[5]) *
1337 (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1338 if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1339 direction == FD_DIR_SCANH) && dma_mode == 0) ||
1340 (direction == FD_DIR_WRITE && dma_mode == 2) ||
1341 (direction == FD_DIR_READ && (dma_mode == 1 || dma_mode == 0))) {
1342 /* No access is allowed until DMA transfer has completed */
1343 fdctrl->msr &= ~FD_MSR_RQM;
1344 /* Now, we just have to wait for the DMA controller to
1345 * recall us...
1346 */
1347#ifndef VBOX
1348 DMA_hold_DREQ(fdctrl->dma_chann);
1349 DMA_schedule(fdctrl->dma_chann);
1350#else
1351 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1352 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1353#endif
1354 return;
1355 } else {
1356 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1357 }
1358 }
1359 FLOPPY_DPRINTF("start non-DMA transfer\n");
1360 fdctrl->msr |= FD_MSR_NONDMA;
1361 if (direction != FD_DIR_WRITE)
1362 fdctrl->msr |= FD_MSR_DIO;
1363 /* IO based transfer: calculate len */
1364 fdctrl_raise_irq(fdctrl, 0x00);
1365
1366 return;
1367}
1368
1369/* Prepare a format data transfer (either DMA or FIFO) */
1370static void fdctrl_start_format(fdctrl_t *fdctrl)
1371{
1372 fdrive_t *cur_drv;
1373 uint8_t ns, dp, kh, kt, ks;
1374
1375 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1376 cur_drv = get_cur_drv(fdctrl);
1377 kt = cur_drv->track;
1378 kh = (fdctrl->fifo[1] & 0x04) >> 2;
1379 ns = fdctrl->fifo[3];
1380 dp = fdctrl->fifo[5];
1381 ks = 1;
1382 FLOPPY_DPRINTF("Start format at %d %d %02x, %d sect, pat %02x (%d)\n",
1383 GET_CUR_DRV(fdctrl), kh, kt, ns, dp,
1384 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1385 switch (fd_seek(cur_drv, kh, kt, ks, false)) {
1386 case 2:
1387 /* sect too big */
1388 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1389 fdctrl->fifo[3] = kt;
1390 fdctrl->fifo[4] = kh;
1391 fdctrl->fifo[5] = ks;
1392 return;
1393 case 3:
1394 /* track too big */
1395 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1396 fdctrl->fifo[3] = kt;
1397 fdctrl->fifo[4] = kh;
1398 fdctrl->fifo[5] = ks;
1399 return;
1400 case 4:
1401 /* No seek enabled */
1402 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1403 fdctrl->fifo[3] = kt;
1404 fdctrl->fifo[4] = kh;
1405 fdctrl->fifo[5] = ks;
1406 return;
1407 case 5:
1408 /* No disk in drive */
1409 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1410 fdctrl->fifo[3] = kt;
1411 fdctrl->fifo[4] = kh;
1412 fdctrl->fifo[5] = ks;
1413 return;
1414 case 1:
1415 break;
1416 default:
1417 break;
1418 }
1419 /* It's not clear what should happen if the data rate does not match. */
1420#if 0
1421 /* Check the data rate. If the programmed data rate does not match
1422 * the currently inserted medium, the operation has to fail.
1423 */
1424 if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
1425 FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
1426 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
1427 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, FD_SR2_MD);
1428 fdctrl->fifo[3] = kt;
1429 fdctrl->fifo[4] = kh;
1430 fdctrl->fifo[5] = ks;
1431 return;
1432 }
1433#endif
1434 /* Set the FIFO state */
1435 fdctrl->data_dir = FD_DIR_FORMAT;
1436 fdctrl->data_pos = 0;
1437 fdctrl->msr |= FD_MSR_CMDBUSY;
1438 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
1439 fdctrl->data_len = ns * 4;
1440 fdctrl->eot = ns;
1441 if (fdctrl->dor & FD_DOR_DMAEN) {
1442 int dma_mode;
1443 /* DMA transfer are enabled. Check if DMA channel is well programmed */
1444#ifndef VBOX
1445 dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1446#else
1447 dma_mode = PDMDevHlpDMAGetChannelMode (fdctrl->pDevIns, fdctrl->dma_chann);
1448#endif
1449 dma_mode = (dma_mode >> 2) & 3;
1450 FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1451 dma_mode, fdctrl->data_dir,
1452 (128 << fdctrl->fifo[2]) *
1453 (cur_drv->last_sect + 1), fdctrl->data_len);
1454 if (fdctrl->data_dir == FD_DIR_FORMAT && dma_mode == 2) {
1455 /* No access is allowed until DMA transfer has completed */
1456 fdctrl->msr &= ~FD_MSR_RQM;
1457 /* Now, we just have to wait for the DMA controller to
1458 * recall us...
1459 */
1460#ifndef VBOX
1461 DMA_hold_DREQ(fdctrl->dma_chann);
1462 DMA_schedule(fdctrl->dma_chann);
1463#else
1464 PDMDevHlpDMASetDREQ (fdctrl->pDevIns, fdctrl->dma_chann, 1);
1465 PDMDevHlpDMASchedule (fdctrl->pDevIns);
1466#endif
1467 return;
1468 } else {
1469 FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, fdctrl->data_dir);
1470 }
1471 }
1472 FLOPPY_DPRINTF("start non-DMA format\n");
1473 fdctrl->msr |= FD_MSR_NONDMA;
1474 /* IO based transfer: calculate len */
1475 fdctrl_raise_irq(fdctrl, 0x00);
1476
1477 return;
1478}
1479
1480/* Prepare a transfer of deleted data */
1481static void fdctrl_start_transfer_del(fdctrl_t *fdctrl, int direction)
1482{
1483 RT_NOREF(direction);
1484 FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1485
1486 /* We don't handle deleted data,
1487 * so we don't return *ANYTHING*
1488 */
1489 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1490}
1491
1492#ifdef VBOX
1493/* Block driver read/write wrappers. */
1494
1495static int blk_write(fdrive_t *drv, int64_t sector_num, const uint8_t *buf, int nb_sectors)
1496{
1497 int rc;
1498
1499 drv->Led.Asserted.s.fWriting = drv->Led.Actual.s.fWriting = 1;
1500
1501 rc = drv->pDrvMedia->pfnWrite(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1502 buf, nb_sectors * FD_SECTOR_LEN);
1503
1504 drv->Led.Actual.s.fWriting = 0;
1505 if (RT_FAILURE(rc))
1506 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1507
1508 return rc;
1509}
1510
1511static int blk_read(fdrive_t *drv, int64_t sector_num, uint8_t *buf, int nb_sectors)
1512{
1513 int rc;
1514
1515 drv->Led.Asserted.s.fReading = drv->Led.Actual.s.fReading = 1;
1516
1517 rc = drv->pDrvMedia->pfnRead(drv->pDrvMedia, sector_num * FD_SECTOR_LEN,
1518 buf, nb_sectors * FD_SECTOR_LEN);
1519
1520 drv->Led.Actual.s.fReading = 0;
1521
1522 if (RT_FAILURE(rc))
1523 AssertMsgFailed(("Floppy: Failure to read sector %d. rc=%Rrc", sector_num, rc));
1524
1525 return rc;
1526}
1527
1528#endif
1529
1530/* handlers for DMA transfers */
1531#ifdef VBOX
1532static DECLCALLBACK(uint32_t) fdctrl_transfer_handler (PPDMDEVINS pDevIns,
1533 void *opaque,
1534 unsigned nchan,
1535 uint32_t dma_pos,
1536 uint32_t dma_len)
1537#else
1538static int fdctrl_transfer_handler (void *opaque, int nchan,
1539 int dma_pos, int dma_len)
1540#endif
1541{
1542 RT_NOREF(pDevIns, dma_pos);
1543 fdctrl_t *fdctrl;
1544 fdrive_t *cur_drv;
1545#ifdef VBOX
1546 int rc;
1547 uint32_t len = 0;
1548 uint32_t start_pos, rel_pos;
1549#else
1550 int len, start_pos, rel_pos;
1551#endif
1552 uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1553
1554 fdctrl = (fdctrl_t *)opaque;
1555 if (fdctrl->msr & FD_MSR_RQM) {
1556 FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1557 return 0;
1558 }
1559 cur_drv = get_cur_drv(fdctrl);
1560 if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1561 fdctrl->data_dir == FD_DIR_SCANH)
1562 status2 = FD_SR2_SNS;
1563 if (dma_len > fdctrl->data_len)
1564 dma_len = fdctrl->data_len;
1565#ifndef VBOX
1566 if (cur_drv->bs == NULL)
1567#else /* !VBOX */
1568 if (cur_drv->pDrvMedia == NULL)
1569#endif
1570 {
1571 if (fdctrl->data_dir == FD_DIR_WRITE)
1572 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1573 else
1574 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1575 Assert(len == 0);
1576 goto transfer_error;
1577 }
1578
1579#ifdef VBOX
1580 if (cur_drv->ro)
1581 {
1582 if (fdctrl->data_dir == FD_DIR_WRITE || fdctrl->data_dir == FD_DIR_FORMAT)
1583 {
1584 /* Handle readonly medium early, no need to do DMA, touch the
1585 * LED or attempt any writes. A real floppy doesn't attempt
1586 * to write to readonly media either. */
1587 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
1588 0x00);
1589 Assert(len == 0);
1590 goto transfer_error;
1591 }
1592 }
1593#endif
1594
1595
1596 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1597 for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1598 len = dma_len - fdctrl->data_pos;
1599 if (len + rel_pos > FD_SECTOR_LEN)
1600 len = FD_SECTOR_LEN - rel_pos;
1601 FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1602 "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1603 fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1604 cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1605 fd_sector(cur_drv) * FD_SECTOR_LEN);
1606 if (fdctrl->data_dir != FD_DIR_FORMAT &&
1607 (fdctrl->data_dir != FD_DIR_WRITE ||
1608 len < FD_SECTOR_LEN || rel_pos != 0)) {
1609 /* READ & SCAN commands and realign to a sector for WRITE */
1610#ifdef VBOX
1611 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1612 if (RT_FAILURE(rc))
1613#else
1614 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1615 fdctrl->fifo, 1) < 0)
1616#endif
1617 {
1618 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1619 fd_sector(cur_drv));
1620 /* Sure, image size is too small... */
1621 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1622 }
1623 }
1624 switch (fdctrl->data_dir) {
1625 case FD_DIR_READ:
1626 /* READ commands */
1627#ifdef VBOX
1628 {
1629 uint32_t read;
1630 int rc2 = PDMDevHlpDMAWriteMemory(fdctrl->pDevIns, nchan,
1631 fdctrl->fifo + rel_pos,
1632 fdctrl->data_pos,
1633 len, &read);
1634 AssertMsgRC (rc2, ("DMAWriteMemory -> %Rrc\n", rc2));
1635 }
1636#else
1637 DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1638 fdctrl->data_pos, len);
1639#endif
1640/* cpu_physical_memory_write(addr + fdctrl->data_pos, */
1641/* fdctrl->fifo + rel_pos, len); */
1642 break;
1643 case FD_DIR_WRITE:
1644 /* WRITE commands */
1645#ifdef VBOX
1646 {
1647 uint32_t written;
1648 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1649 fdctrl->fifo + rel_pos,
1650 fdctrl->data_pos,
1651 len, &written);
1652 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1653 }
1654
1655 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1656 if (RT_FAILURE(rc))
1657#else
1658 DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1659 fdctrl->data_pos, len);
1660 if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1661 fdctrl->fifo, 1) < 0)
1662#endif
1663 {
1664 FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1665 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1666 goto transfer_error;
1667 }
1668 break;
1669#ifdef VBOX
1670 case FD_DIR_FORMAT:
1671 /* FORMAT command */
1672 {
1673 uint8_t eot = fdctrl->fifo[3];
1674 uint8_t filler = fdctrl->fifo[5];
1675 uint32_t written;
1676 int sct;
1677 int rc2 = PDMDevHlpDMAReadMemory(fdctrl->pDevIns, nchan,
1678 fdctrl->fifo + rel_pos,
1679 fdctrl->data_pos,
1680 len, &written);
1681 AssertMsgRC (rc2, ("DMAReadMemory -> %Rrc\n", rc2));
1682
1683 /* Fill the entire track with desired data pattern. */
1684 FLOPPY_DPRINTF("formatting track: %d sectors, pattern %02x\n",
1685 eot, filler);
1686 memset(fdctrl->fifo, filler, FD_SECTOR_LEN);
1687 for (sct = 0; sct < eot; ++sct)
1688 {
1689 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1690 if (RT_FAILURE(rc))
1691 {
1692 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1693 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1694 goto transfer_error;
1695 }
1696 fdctrl_seek_to_next_sect(fdctrl, cur_drv);
1697 }
1698 }
1699 break;
1700#endif
1701 default:
1702 /* SCAN commands */
1703 {
1704 uint8_t tmpbuf[FD_SECTOR_LEN];
1705 int ret;
1706#ifdef VBOX
1707 uint32_t read;
1708 int rc2 = PDMDevHlpDMAReadMemory (fdctrl->pDevIns, nchan, tmpbuf,
1709 fdctrl->data_pos, len, &read);
1710 AssertMsg(RT_SUCCESS(rc2), ("DMAReadMemory -> %Rrc2\n", rc2)); NOREF(rc2);
1711#else
1712 DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1713#endif
1714 ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1715 if (ret == 0) {
1716 status2 = FD_SR2_SEH;
1717 goto end_transfer;
1718 }
1719 if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1720 (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1721 status2 = 0x00;
1722 goto end_transfer;
1723 }
1724 }
1725 break;
1726 }
1727 fdctrl->data_pos += len;
1728 rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1729 if (rel_pos == 0) {
1730 /* Seek to next sector */
1731 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1732 break;
1733 }
1734 }
1735end_transfer:
1736 len = fdctrl->data_pos - start_pos;
1737 FLOPPY_DPRINTF("end transfer %d %d %d\n",
1738 fdctrl->data_pos, len, fdctrl->data_len);
1739 if (fdctrl->data_dir == FD_DIR_SCANE ||
1740 fdctrl->data_dir == FD_DIR_SCANL ||
1741 fdctrl->data_dir == FD_DIR_SCANH)
1742 status2 = FD_SR2_SEH;
1743 if (FD_DID_SEEK(fdctrl->data_state))
1744 status0 |= FD_SR0_SEEK;
1745 fdctrl->data_len -= len;
1746 fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1747transfer_error:
1748
1749 return len;
1750}
1751
1752/* Data register : 0x05 */
1753static uint32_t fdctrl_read_data(fdctrl_t *fdctrl)
1754{
1755 fdrive_t *cur_drv;
1756 uint32_t retval = 0;
1757 unsigned pos;
1758#ifdef VBOX
1759 int rc;
1760#endif
1761
1762 cur_drv = get_cur_drv(fdctrl);
1763 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1764 if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1765 FLOPPY_ERROR("controller not ready for reading\n");
1766 return 0;
1767 }
1768 pos = fdctrl->data_pos % FD_SECTOR_LEN;
1769 if (fdctrl->msr & FD_MSR_NONDMA) {
1770 if (pos == 0) {
1771 if (fdctrl->data_pos != 0)
1772 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1773 FLOPPY_DPRINTF("error seeking to next sector %d\n",
1774 fd_sector(cur_drv));
1775 return 0;
1776 }
1777#ifdef VBOX
1778 rc = blk_read(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1779 if (RT_FAILURE(rc))
1780#else
1781 if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0)
1782#endif
1783 {
1784 FLOPPY_DPRINTF("error getting sector %d\n",
1785 fd_sector(cur_drv));
1786 /* Sure, image size is too small... */
1787 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1788 }
1789 }
1790 }
1791 retval = fdctrl->fifo[pos];
1792 if (++fdctrl->data_pos == fdctrl->data_len) {
1793 fdctrl->data_pos = 0;
1794 /* Switch from transfer mode to status mode
1795 * then from status mode to command mode
1796 */
1797 if (fdctrl->msr & FD_MSR_NONDMA) {
1798 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1799 } else {
1800 fdctrl_reset_fifo(fdctrl);
1801 fdctrl_reset_irq(fdctrl);
1802 }
1803 }
1804 FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1805
1806 return retval;
1807}
1808
1809static void fdctrl_format_sector(fdctrl_t *fdctrl)
1810{
1811 fdrive_t *cur_drv;
1812 uint8_t kh, kt, ks;
1813#ifdef VBOX
1814 int ok = 0, rc;
1815#endif
1816
1817 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1818 cur_drv = get_cur_drv(fdctrl);
1819 kt = fdctrl->fifo[6];
1820 kh = fdctrl->fifo[7];
1821 ks = fdctrl->fifo[8];
1822 FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1823 GET_CUR_DRV(fdctrl), kh, kt, ks,
1824 fd_sector_calc(kh, kt, ks, cur_drv->last_sect, NUM_SIDES(cur_drv)));
1825 switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1826 case 2:
1827 /* sect too big */
1828 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1829 fdctrl->fifo[3] = kt;
1830 fdctrl->fifo[4] = kh;
1831 fdctrl->fifo[5] = ks;
1832 return;
1833 case 3:
1834 /* track too big */
1835 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1836 fdctrl->fifo[3] = kt;
1837 fdctrl->fifo[4] = kh;
1838 fdctrl->fifo[5] = ks;
1839 return;
1840 case 4:
1841 /* No seek enabled */
1842 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1843 fdctrl->fifo[3] = kt;
1844 fdctrl->fifo[4] = kh;
1845 fdctrl->fifo[5] = ks;
1846 return;
1847 case 5:
1848 /* No disk in drive */
1849 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
1850 fdctrl->fifo[3] = kt;
1851 fdctrl->fifo[4] = kh;
1852 fdctrl->fifo[5] = ks;
1853 return;
1854 case 1:
1855 fdctrl->data_state |= FD_STATE_SEEK;
1856 break;
1857 default:
1858 break;
1859 }
1860 memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1861#ifdef VBOX
1862 if (cur_drv->pDrvMedia) {
1863 rc = blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
1864 if (RT_FAILURE (rc)) {
1865 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1866 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1867 } else {
1868 ok = 1;
1869 }
1870 }
1871 if (ok) {
1872#else
1873 if (cur_drv->bs == NULL ||
1874 bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1875 FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1876 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1877 } else {
1878#endif
1879 if (cur_drv->sect == cur_drv->last_sect) {
1880 fdctrl->data_state &= ~FD_STATE_FORMAT;
1881 /* Last sector done */
1882 if (FD_DID_SEEK(fdctrl->data_state))
1883 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1884 else
1885 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1886 } else {
1887 /* More to do */
1888 fdctrl->data_pos = 0;
1889 fdctrl->data_len = 4;
1890 }
1891 }
1892}
1893
1894static void fdctrl_handle_lock(fdctrl_t *fdctrl, int direction)
1895{
1896 RT_NOREF(direction);
1897 fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1898 fdctrl->fifo[0] = fdctrl->lock << 4;
1899 fdctrl_set_fifo(fdctrl, 1, 0);
1900}
1901
1902static void fdctrl_handle_dumpreg(fdctrl_t *fdctrl, int direction)
1903{
1904 RT_NOREF(direction);
1905 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1906
1907 /* Drives position */
1908 fdctrl->fifo[0] = drv0(fdctrl)->track;
1909 fdctrl->fifo[1] = drv1(fdctrl)->track;
1910#if MAX_FD == 4
1911 fdctrl->fifo[2] = drv2(fdctrl)->track;
1912 fdctrl->fifo[3] = drv3(fdctrl)->track;
1913#else
1914 fdctrl->fifo[2] = 0;
1915 fdctrl->fifo[3] = 0;
1916#endif
1917 /* timers */
1918 fdctrl->fifo[4] = fdctrl->timer0;
1919 fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1920 fdctrl->fifo[6] = cur_drv->last_sect;
1921 fdctrl->fifo[7] = (fdctrl->lock << 7) |
1922 (cur_drv->perpendicular << 2);
1923 fdctrl->fifo[8] = fdctrl->config;
1924 fdctrl->fifo[9] = fdctrl->precomp_trk;
1925 fdctrl_set_fifo(fdctrl, 10, 0);
1926}
1927
1928static void fdctrl_handle_version(fdctrl_t *fdctrl, int direction)
1929{
1930 RT_NOREF(direction);
1931 /* Controller's version */
1932 fdctrl->fifo[0] = fdctrl->version;
1933 fdctrl_set_fifo(fdctrl, 1, 0);
1934}
1935
1936static void fdctrl_handle_partid(fdctrl_t *fdctrl, int direction)
1937{
1938 RT_NOREF(direction);
1939 fdctrl->fifo[0] = 0x01; /* Stepping 1 */
1940 fdctrl_set_fifo(fdctrl, 1, 0);
1941}
1942
1943static void fdctrl_handle_restore(fdctrl_t *fdctrl, int direction)
1944{
1945 RT_NOREF(direction);
1946 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1947
1948 /* Drives position */
1949 drv0(fdctrl)->track = fdctrl->fifo[3];
1950 drv1(fdctrl)->track = fdctrl->fifo[4];
1951#if MAX_FD == 4
1952 drv2(fdctrl)->track = fdctrl->fifo[5];
1953 drv3(fdctrl)->track = fdctrl->fifo[6];
1954#endif
1955 /* timers */
1956 fdctrl->timer0 = fdctrl->fifo[7];
1957 fdctrl->timer1 = fdctrl->fifo[8];
1958 cur_drv->last_sect = fdctrl->fifo[9];
1959 fdctrl->lock = fdctrl->fifo[10] >> 7;
1960 cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1961 fdctrl->config = fdctrl->fifo[11];
1962 fdctrl->precomp_trk = fdctrl->fifo[12];
1963 fdctrl->pwrd = fdctrl->fifo[13];
1964 fdctrl_reset_fifo(fdctrl);
1965}
1966
1967static void fdctrl_handle_save(fdctrl_t *fdctrl, int direction)
1968{
1969 RT_NOREF(direction);
1970 fdrive_t *cur_drv = get_cur_drv(fdctrl);
1971
1972 fdctrl->fifo[0] = 0;
1973 fdctrl->fifo[1] = 0;
1974 /* Drives position */
1975 fdctrl->fifo[2] = drv0(fdctrl)->track;
1976 fdctrl->fifo[3] = drv1(fdctrl)->track;
1977#if MAX_FD == 4
1978 fdctrl->fifo[4] = drv2(fdctrl)->track;
1979 fdctrl->fifo[5] = drv3(fdctrl)->track;
1980#else
1981 fdctrl->fifo[4] = 0;
1982 fdctrl->fifo[5] = 0;
1983#endif
1984 /* timers */
1985 fdctrl->fifo[6] = fdctrl->timer0;
1986 fdctrl->fifo[7] = fdctrl->timer1;
1987 fdctrl->fifo[8] = cur_drv->last_sect;
1988 fdctrl->fifo[9] = (fdctrl->lock << 7) |
1989 (cur_drv->perpendicular << 2);
1990 fdctrl->fifo[10] = fdctrl->config;
1991 fdctrl->fifo[11] = fdctrl->precomp_trk;
1992 fdctrl->fifo[12] = fdctrl->pwrd;
1993 fdctrl->fifo[13] = 0;
1994 fdctrl->fifo[14] = 0;
1995 fdctrl_set_fifo(fdctrl, 15, 0);
1996}
1997
1998static void fdctrl_handle_readid(fdctrl_t *fdctrl, int direction)
1999{
2000 RT_NOREF(direction);
2001 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2002
2003 FLOPPY_DPRINTF("CMD:%02x SEL:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
2004
2005 fdctrl->msr &= ~FD_MSR_RQM;
2006 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2007#ifdef VBOX
2008 TMTimerSetMillies(fdctrl->result_timer, 1000 / 50);
2009#else
2010 qemu_mod_timer(fdctrl->result_timer,
2011 qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
2012#endif
2013}
2014
2015static void fdctrl_handle_format_track(fdctrl_t *fdctrl, int direction)
2016{
2017 RT_NOREF(direction);
2018 fdrive_t *cur_drv;
2019 uint8_t ns, dp;
2020
2021 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2022 cur_drv = get_cur_drv(fdctrl);
2023 fdctrl->data_state &= ~(FD_STATE_MULTI | FD_STATE_SEEK);
2024 ns = fdctrl->fifo[3];
2025 dp = fdctrl->fifo[5];
2026
2027 FLOPPY_DPRINTF("Format track %d at %d, %d sectors, filler %02x\n",
2028 cur_drv->track, GET_CUR_DRV(fdctrl), ns, dp);
2029 FLOPPY_DPRINTF("CMD:%02x SEL:%02x N:%02x SC:%02x GPL:%02x D:%02x\n",
2030 fdctrl->fifo[0], fdctrl->fifo[1], fdctrl->fifo[2],
2031 fdctrl->fifo[3], fdctrl->fifo[4], fdctrl->fifo[5]);
2032
2033 /* Since we cannot actually format anything, we have to make sure that
2034 * whatever new format the guest is trying to establish matches the
2035 * existing format of the medium.
2036 */
2037 if (cur_drv->last_sect != ns || fdctrl->fifo[2] != 2)
2038 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_NW, 0);
2039 else
2040 {
2041 cur_drv->bps = fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
2042 cur_drv->last_sect = ns;
2043
2044 fdctrl_start_format(fdctrl);
2045 }
2046}
2047
2048static void fdctrl_handle_specify(fdctrl_t *fdctrl, int direction)
2049{
2050 RT_NOREF(direction);
2051 fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
2052 fdctrl->timer1 = fdctrl->fifo[2] >> 1;
2053 if (fdctrl->fifo[2] & 1)
2054 fdctrl->dor &= ~FD_DOR_DMAEN;
2055 else
2056 fdctrl->dor |= FD_DOR_DMAEN;
2057 /* No result back */
2058 fdctrl_reset_fifo(fdctrl);
2059}
2060
2061static void fdctrl_handle_sense_drive_status(fdctrl_t *fdctrl, int direction)
2062{
2063 RT_NOREF(direction);
2064 fdrive_t *cur_drv;
2065
2066 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2067 cur_drv = get_cur_drv(fdctrl);
2068 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2069 /* 1 Byte status back */
2070 fdctrl->fifo[0] = (cur_drv->ro << 6) |
2071 (cur_drv->track == 0 ? 0x10 : 0x00) |
2072 (cur_drv->head << 2) |
2073 GET_CUR_DRV(fdctrl) |
2074 0x28;
2075 fdctrl_set_fifo(fdctrl, 1, 0);
2076}
2077
2078static void fdctrl_handle_recalibrate(fdctrl_t *fdctrl, int direction)
2079{
2080 RT_NOREF(direction);
2081 fdrive_t *cur_drv;
2082 uint8_t st0;
2083
2084 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2085 cur_drv = get_cur_drv(fdctrl);
2086 fd_recalibrate(cur_drv);
2087 fdctrl_reset_fifo(fdctrl);
2088 st0 = FD_SR0_SEEK | GET_CUR_DRV(fdctrl);
2089 /* No drive means no TRK0 signal. */
2090 if (cur_drv->drive == FDRIVE_DRV_NONE)
2091 st0 |= FD_SR0_ABNTERM | FD_SR0_EQPMT;
2092 /* Raise Interrupt */
2093 fdctrl_raise_irq(fdctrl, st0);
2094}
2095
2096static void fdctrl_handle_sense_interrupt_status(fdctrl_t *fdctrl, int direction)
2097{
2098 RT_NOREF(direction);
2099 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2100
2101 FLOPPY_DPRINTF("CMD:%02x\n", fdctrl->fifo[0]);
2102 if(fdctrl->reset_sensei > 0) {
2103 fdctrl->fifo[0] =
2104 FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
2105 fdctrl->reset_sensei--;
2106 } else {
2107 /* XXX: status0 handling is broken for read/write
2108 commands, so we do this hack. It should be suppressed
2109 ASAP */
2110 fdctrl->fifo[0] =
2111 FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
2112 /* Hack to preserve SR0 on equipment check failures (no drive). */
2113 if (fdctrl->status0 & FD_SR0_EQPMT)
2114 fdctrl->fifo[0] = fdctrl->status0;
2115 }
2116
2117 fdctrl->fifo[1] = cur_drv->track;
2118 fdctrl_set_fifo(fdctrl, 2, 0);
2119 FLOPPY_DPRINTF("ST0:%02x PCN:%02x\n", fdctrl->fifo[0], fdctrl->fifo[1]);
2120 fdctrl->status0 = FD_SR0_RDYCHG;
2121}
2122
2123static void fdctrl_handle_seek(fdctrl_t *fdctrl, int direction)
2124{
2125 RT_NOREF(direction);
2126 fdrive_t *cur_drv;
2127
2128 FLOPPY_DPRINTF("CMD:%02x SEL:%02x NCN:%02x\n", fdctrl->fifo[0],
2129 fdctrl->fifo[1], fdctrl->fifo[2]);
2130
2131 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2132 cur_drv = get_cur_drv(fdctrl);
2133 fdctrl_reset_fifo(fdctrl);
2134#ifdef VBOX
2135 /* The seek command just sends step pulses to the drive and doesn't care if
2136 * there's a medium inserted or if it's banging the head against the drive.
2137 */
2138 cur_drv->track = fdctrl->fifo[2];
2139 cur_drv->ltrk = cur_drv->track;
2140 cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
2141 /* Raise Interrupt */
2142 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK | GET_CUR_DRV(fdctrl));
2143#else
2144 if (fdctrl->fifo[2] > cur_drv->max_track) {
2145 fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
2146 } else {
2147 cur_drv->track = fdctrl->fifo[2];
2148 /* Raise Interrupt */
2149 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2150 }
2151#endif
2152}
2153
2154static void fdctrl_handle_perpendicular_mode(fdctrl_t *fdctrl, int direction)
2155{
2156 RT_NOREF(direction);
2157 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2158
2159 if (fdctrl->fifo[1] & 0x80)
2160 cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
2161 /* No result back */
2162 fdctrl_reset_fifo(fdctrl);
2163}
2164
2165static void fdctrl_handle_configure(fdctrl_t *fdctrl, int direction)
2166{
2167 RT_NOREF(direction);
2168 fdctrl->config = fdctrl->fifo[2];
2169 fdctrl->precomp_trk = fdctrl->fifo[3];
2170 /* No result back */
2171 fdctrl_reset_fifo(fdctrl);
2172}
2173
2174static void fdctrl_handle_powerdown_mode(fdctrl_t *fdctrl, int direction)
2175{
2176 RT_NOREF(direction);
2177 fdctrl->pwrd = fdctrl->fifo[1];
2178 fdctrl->fifo[0] = fdctrl->fifo[1];
2179 fdctrl_set_fifo(fdctrl, 1, 0);
2180}
2181
2182static void fdctrl_handle_option(fdctrl_t *fdctrl, int direction)
2183{
2184 RT_NOREF(direction);
2185 /* No result back */
2186 fdctrl_reset_fifo(fdctrl);
2187}
2188
2189static void fdctrl_handle_drive_specification_command(fdctrl_t *fdctrl, int direction)
2190{
2191 RT_NOREF(direction);
2192 /* fdrive_t *cur_drv = get_cur_drv(fdctrl); - unused */
2193
2194 /* This command takes a variable number of parameters. It can be terminated
2195 * at any time if the high bit of a parameter is set. Once there are 6 bytes
2196 * in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
2197 */
2198 if (fdctrl->data_len == 7 || (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
2199
2200 /* Command parameters done */
2201 if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
2202 /* Data is echoed, but not stored! */
2203 fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
2204 fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
2205 fdctrl->fifo[2] = 0;
2206 fdctrl->fifo[3] = 0;
2207 fdctrl_set_fifo(fdctrl, 4, 0);
2208 } else {
2209 fdctrl_reset_fifo(fdctrl);
2210 }
2211 } else
2212 fdctrl->data_len++; /* Wait for another byte. */
2213}
2214
2215static void fdctrl_handle_relative_seek_out(fdctrl_t *fdctrl, int direction)
2216{
2217 RT_NOREF(direction);
2218 fdrive_t *cur_drv;
2219
2220 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2221 cur_drv = get_cur_drv(fdctrl);
2222 if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
2223 cur_drv->track = cur_drv->max_track - 1;
2224 } else {
2225 cur_drv->track += fdctrl->fifo[2];
2226 }
2227 fdctrl_reset_fifo(fdctrl);
2228 /* Raise Interrupt */
2229 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2230}
2231
2232static void fdctrl_handle_relative_seek_in(fdctrl_t *fdctrl, int direction)
2233{
2234 RT_NOREF(direction);
2235 fdrive_t *cur_drv;
2236
2237 SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
2238 cur_drv = get_cur_drv(fdctrl);
2239 if (fdctrl->fifo[2] > cur_drv->track) {
2240 cur_drv->track = 0;
2241 } else {
2242 cur_drv->track -= fdctrl->fifo[2];
2243 }
2244 fdctrl_reset_fifo(fdctrl);
2245 /* Raise Interrupt */
2246 fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
2247}
2248
2249static const struct {
2250 uint8_t value;
2251 uint8_t mask;
2252 const char* name;
2253 int parameters;
2254 void (*handler)(fdctrl_t *fdctrl, int direction);
2255 int direction;
2256} handlers[] = {
2257 { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
2258 { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
2259 { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
2260 { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
2261 { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
2262 { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
2263 { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
2264 { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
2265 { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
2266 { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
2267 { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
2268 { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
2269 { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
2270 { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
2271 { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
2272 { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
2273 { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
2274 { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
2275 { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
2276 { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
2277 { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
2278 { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
2279 { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2280 { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
2281 { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
2282 { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
2283 { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
2284 { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
2285 { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
2286 { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
2287 { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
2288 { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
2289};
2290/* Associate command to an index in the 'handlers' array */
2291static uint8_t command_to_handler[256];
2292
2293static void fdctrl_write_data(fdctrl_t *fdctrl, uint32_t value)
2294{
2295 fdrive_t *cur_drv;
2296 int pos;
2297
2298 cur_drv = get_cur_drv(fdctrl);
2299 /* Reset mode */
2300 if (!(fdctrl->dor & FD_DOR_nRESET)) {
2301 FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
2302 return;
2303 }
2304 if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
2305 FLOPPY_ERROR("controller not ready for writing\n");
2306 return;
2307 }
2308 fdctrl->dsr &= ~FD_DSR_PWRDOWN;
2309 /* Is it write command time ? */
2310 if (fdctrl->msr & FD_MSR_NONDMA) {
2311 /* FIFO data write */
2312 pos = fdctrl->data_pos++;
2313 pos %= FD_SECTOR_LEN;
2314 fdctrl->fifo[pos] = value;
2315 if (pos == FD_SECTOR_LEN - 1 ||
2316 fdctrl->data_pos == fdctrl->data_len) {
2317#ifdef VBOX
2318 blk_write(cur_drv, fd_sector(cur_drv), fdctrl->fifo, 1);
2319#else
2320 bdrv_write(cur_drv->bs, fd_sector(cur_drv),
2321 fdctrl->fifo, 1);
2322#endif
2323 }
2324 /* Switch from transfer mode to status mode
2325 * then from status mode to command mode
2326 */
2327 if (fdctrl->data_pos == fdctrl->data_len)
2328 fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
2329 return;
2330 }
2331 if (fdctrl->data_pos == 0) {
2332 /* Command */
2333 fdctrl_reset_irq(fdctrl); /* If pending from previous seek/recalibrate. */
2334 pos = command_to_handler[value & 0xff];
2335 FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
2336 fdctrl->data_len = handlers[pos].parameters + 1;
2337 fdctrl->msr |= FD_MSR_CMDBUSY;
2338 }
2339
2340 FLOPPY_DPRINTF("%s: %02x\n", __FUNCTION__, value);
2341 fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;
2342 if (fdctrl->data_pos == fdctrl->data_len) {
2343 /* We now have all parameters
2344 * and will be able to treat the command
2345 */
2346 if (fdctrl->data_state & FD_STATE_FORMAT) {
2347 fdctrl_format_sector(fdctrl);
2348 return;
2349 }
2350
2351 pos = command_to_handler[fdctrl->fifo[0] & 0xff];
2352 FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
2353 (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
2354 }
2355}
2356
2357static void fdctrl_result_timer(void *opaque)
2358{
2359 fdctrl_t *fdctrl = (fdctrl_t *)opaque;
2360 fdrive_t *cur_drv = get_cur_drv(fdctrl);
2361
2362 /* Pretend we are spinning.
2363 * This is needed for Coherent, which uses READ ID to check for
2364 * sector interleaving.
2365 */
2366 if (cur_drv->last_sect != 0) {
2367 cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
2368 }
2369 /* READ_ID can't automatically succeed! */
2370#ifdef VBOX
2371 if (!cur_drv->max_track) {
2372 FLOPPY_DPRINTF("read id when no disk in drive\n");
2373 /// @todo This is wrong! Command should not complete.
2374 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2375 } else if ((fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
2376 FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
2377 fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
2378 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2379 } else if (cur_drv->track >= cur_drv->max_track) {
2380 FLOPPY_DPRINTF("read id past last track (%d >= %d)\n",
2381 cur_drv->track, cur_drv->max_track);
2382 cur_drv->ltrk = 0;
2383 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA | FD_SR1_ND, FD_SR2_MD);
2384 }
2385 else
2386#endif
2387 fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
2388}
2389
2390
2391#ifdef VBOX
2392
2393/* -=-=-=-=-=-=-=-=- Timer Callback -=-=-=-=-=-=-=-=- */
2394
2395/**
2396 * @callback_method_impl{FNTMTIMERDEV}
2397 */
2398static DECLCALLBACK(void) fdcTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
2399{
2400 RT_NOREF(pDevIns, pTimer);
2401 fdctrl_t *fdctrl = (fdctrl_t *)pvUser;
2402 fdctrl_result_timer(fdctrl);
2403}
2404
2405
2406/* -=-=-=-=-=-=-=-=- I/O Port Access Handlers -=-=-=-=-=-=-=-=- */
2407
2408/**
2409 * @callback_method_impl{FNIOMIOPORTOUT}
2410 */
2411static DECLCALLBACK(int) fdcIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb)
2412{
2413 RT_NOREF(pDevIns);
2414 if (cb == 1)
2415 fdctrl_write (pvUser, uPort & 7, u32);
2416 else
2417 AssertMsgFailed(("uPort=%#x cb=%d u32=%#x\n", uPort, cb, u32));
2418 return VINF_SUCCESS;
2419}
2420
2421
2422/**
2423 * @callback_method_impl{FNIOMIOPORTIN}
2424 */
2425static DECLCALLBACK(int) fdcIoPortRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t *pu32, unsigned cb)
2426{
2427 RT_NOREF(pDevIns);
2428 if (cb == 1)
2429 {
2430 *pu32 = fdctrl_read (pvUser, uPort & 7);
2431 return VINF_SUCCESS;
2432 }
2433 return VERR_IOM_IOPORT_UNUSED;
2434}
2435
2436
2437/* -=-=-=-=-=-=-=-=- Saved state -=-=-=-=-=-=-=-=- */
2438
2439/**
2440 * @callback_method_impl{FNSSMDEVSAVEEXEC}
2441 */
2442static DECLCALLBACK(int) fdcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2443{
2444 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2445 unsigned int i;
2446
2447 /* Save the FDC I/O registers... */
2448 SSMR3PutU8(pSSM, pThis->sra);
2449 SSMR3PutU8(pSSM, pThis->srb);
2450 SSMR3PutU8(pSSM, pThis->dor);
2451 SSMR3PutU8(pSSM, pThis->tdr);
2452 SSMR3PutU8(pSSM, pThis->dsr);
2453 SSMR3PutU8(pSSM, pThis->msr);
2454 /* ...the status registers... */
2455 SSMR3PutU8(pSSM, pThis->status0);
2456 SSMR3PutU8(pSSM, pThis->status1);
2457 SSMR3PutU8(pSSM, pThis->status2);
2458 /* ...the command FIFO... */
2459 SSMR3PutU32(pSSM, sizeof(pThis->fifo));
2460 SSMR3PutMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2461 SSMR3PutU32(pSSM, pThis->data_pos);
2462 SSMR3PutU32(pSSM, pThis->data_len);
2463 SSMR3PutU8(pSSM, pThis->data_state);
2464 SSMR3PutU8(pSSM, pThis->data_dir);
2465 /* ...and miscellaneous internal FDC state. */
2466 SSMR3PutU8(pSSM, pThis->reset_sensei);
2467 SSMR3PutU8(pSSM, pThis->eot);
2468 SSMR3PutU8(pSSM, pThis->timer0);
2469 SSMR3PutU8(pSSM, pThis->timer1);
2470 SSMR3PutU8(pSSM, pThis->precomp_trk);
2471 SSMR3PutU8(pSSM, pThis->config);
2472 SSMR3PutU8(pSSM, pThis->lock);
2473 SSMR3PutU8(pSSM, pThis->pwrd);
2474 SSMR3PutU8(pSSM, pThis->version);
2475
2476 /* Save the number of drives and per-drive state. Note that the media
2477 * states will be updated in fd_revalidate() and need not be saved.
2478 */
2479 SSMR3PutU8(pSSM, pThis->num_floppies);
2480 Assert(RT_ELEMENTS(pThis->drives) == pThis->num_floppies);
2481 for (i = 0; i < pThis->num_floppies; ++i)
2482 {
2483 fdrive_t *d = &pThis->drives[i];
2484
2485 SSMR3PutMem(pSSM, &d->Led, sizeof(d->Led));
2486 SSMR3PutU32(pSSM, d->drive);
2487 SSMR3PutU8(pSSM, d->dsk_chg);
2488 SSMR3PutU8(pSSM, d->perpendicular);
2489 SSMR3PutU8(pSSM, d->head);
2490 SSMR3PutU8(pSSM, d->track);
2491 SSMR3PutU8(pSSM, d->sect);
2492 }
2493 return TMR3TimerSave (pThis->result_timer, pSSM);
2494}
2495
2496
2497/**
2498 * @callback_method_impl{FNSSMDEVLOADEXEC}
2499 */
2500static DECLCALLBACK(int) fdcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2501{
2502 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2503 unsigned int i;
2504 uint32_t val32;
2505 uint8_t val8;
2506
2507 if (uVersion > FDC_SAVESTATE_CURRENT)
2508 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
2509 Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
2510
2511 /* The old saved state was significantly different. However, we can get
2512 * back most of the controller state and fix the rest by pretending the
2513 * disk in the drive (if any) has been replaced. At any rate there should
2514 * be no difficulty unless the state was saved during a floppy operation.
2515 */
2516 if (uVersion == FDC_SAVESTATE_OLD)
2517 {
2518 /* First verify a few assumptions. */
2519 AssertMsgReturn(sizeof(pThis->fifo) == FD_SECTOR_LEN,
2520 ("The size of FIFO in saved state doesn't match!\n"),
2521 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2522 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == 2,
2523 ("The number of drives in old saved state doesn't match!\n"),
2524 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2525 /* Now load the old state. */
2526 SSMR3GetU8(pSSM, &pThis->version);
2527 /* Toss IRQ level, DMA channel, I/O base, and state. */
2528 SSMR3GetU8(pSSM, &val8);
2529 SSMR3GetU8(pSSM, &val8);
2530 SSMR3GetU32(pSSM, &val32);
2531 SSMR3GetU8(pSSM, &val8);
2532 /* Translate dma_en. */
2533 SSMR3GetU8(pSSM, &val8);
2534 if (val8)
2535 pThis->dor |= FD_DOR_DMAEN;
2536 SSMR3GetU8(pSSM, &pThis->cur_drv);
2537 /* Translate bootsel. */
2538 SSMR3GetU8(pSSM, &val8);
2539 pThis->tdr |= val8 << 2;
2540 SSMR3GetMem(pSSM, &pThis->fifo, FD_SECTOR_LEN);
2541 SSMR3GetU32(pSSM, &pThis->data_pos);
2542 SSMR3GetU32(pSSM, &pThis->data_len);
2543 SSMR3GetU8(pSSM, &pThis->data_state);
2544 SSMR3GetU8(pSSM, &pThis->data_dir);
2545 SSMR3GetU8(pSSM, &pThis->status0);
2546 SSMR3GetU8(pSSM, &pThis->eot);
2547 SSMR3GetU8(pSSM, &pThis->timer0);
2548 SSMR3GetU8(pSSM, &pThis->timer1);
2549 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2550 SSMR3GetU8(pSSM, &pThis->config);
2551 SSMR3GetU8(pSSM, &pThis->lock);
2552 SSMR3GetU8(pSSM, &pThis->pwrd);
2553
2554 for (i = 0; i < 2; ++i)
2555 {
2556 fdrive_t *d = &pThis->drives[i];
2557
2558 SSMR3GetMem (pSSM, &d->Led, sizeof (d->Led));
2559 SSMR3GetU32(pSSM, &val32);
2560 d->drive = (fdrive_type_t)val32;
2561 SSMR3GetU32(pSSM, &val32); /* Toss drflags */
2562 SSMR3GetU8(pSSM, &d->perpendicular);
2563 SSMR3GetU8(pSSM, &d->head);
2564 SSMR3GetU8(pSSM, &d->track);
2565 SSMR3GetU8(pSSM, &d->sect);
2566 SSMR3GetU8(pSSM, &val8); /* Toss dir, rw */
2567 SSMR3GetU8(pSSM, &val8);
2568 SSMR3GetU32(pSSM, &val32);
2569 d->flags = (fdrive_flags_t)val32;
2570 SSMR3GetU8(pSSM, &d->last_sect);
2571 SSMR3GetU8(pSSM, &d->max_track);
2572 SSMR3GetU16(pSSM, &d->bps);
2573 SSMR3GetU8(pSSM, &d->ro);
2574 }
2575 }
2576 else /* New state - straightforward. */
2577 {
2578 Assert(uVersion == FDC_SAVESTATE_CURRENT);
2579 /* Load the FDC I/O registers... */
2580 SSMR3GetU8(pSSM, &pThis->sra);
2581 SSMR3GetU8(pSSM, &pThis->srb);
2582 SSMR3GetU8(pSSM, &pThis->dor);
2583 SSMR3GetU8(pSSM, &pThis->tdr);
2584 SSMR3GetU8(pSSM, &pThis->dsr);
2585 SSMR3GetU8(pSSM, &pThis->msr);
2586 /* ...the status registers... */
2587 SSMR3GetU8(pSSM, &pThis->status0);
2588 SSMR3GetU8(pSSM, &pThis->status1);
2589 SSMR3GetU8(pSSM, &pThis->status2);
2590 /* ...the command FIFO, if the size matches... */
2591 SSMR3GetU32(pSSM, &val32);
2592 AssertMsgReturn(sizeof(pThis->fifo) == val32,
2593 ("The size of FIFO in saved state doesn't match!\n"),
2594 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2595 SSMR3GetMem(pSSM, &pThis->fifo, sizeof(pThis->fifo));
2596 SSMR3GetU32(pSSM, &pThis->data_pos);
2597 SSMR3GetU32(pSSM, &pThis->data_len);
2598 SSMR3GetU8(pSSM, &pThis->data_state);
2599 SSMR3GetU8(pSSM, &pThis->data_dir);
2600 /* ...and miscellaneous internal FDC state. */
2601 SSMR3GetU8(pSSM, &pThis->reset_sensei);
2602 SSMR3GetU8(pSSM, &pThis->eot);
2603 SSMR3GetU8(pSSM, &pThis->timer0);
2604 SSMR3GetU8(pSSM, &pThis->timer1);
2605 SSMR3GetU8(pSSM, &pThis->precomp_trk);
2606 SSMR3GetU8(pSSM, &pThis->config);
2607 SSMR3GetU8(pSSM, &pThis->lock);
2608 SSMR3GetU8(pSSM, &pThis->pwrd);
2609 SSMR3GetU8(pSSM, &pThis->version);
2610
2611 /* Validate the number of drives. */
2612 SSMR3GetU8(pSSM, &pThis->num_floppies);
2613 AssertMsgReturn(RT_ELEMENTS(pThis->drives) == pThis->num_floppies,
2614 ("The number of drives in saved state doesn't match!\n"),
2615 VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
2616
2617 /* Load the per-drive state. */
2618 for (i = 0; i < pThis->num_floppies; ++i)
2619 {
2620 fdrive_t *d = &pThis->drives[i];
2621
2622 SSMR3GetMem(pSSM, &d->Led, sizeof(d->Led));
2623 SSMR3GetU32(pSSM, &val32);
2624 d->drive = (fdrive_type_t)val32;
2625 SSMR3GetU8(pSSM, &d->dsk_chg);
2626 SSMR3GetU8(pSSM, &d->perpendicular);
2627 SSMR3GetU8(pSSM, &d->head);
2628 SSMR3GetU8(pSSM, &d->track);
2629 SSMR3GetU8(pSSM, &d->sect);
2630 }
2631 }
2632 return TMR3TimerLoad (pThis->result_timer, pSSM);
2633}
2634
2635
2636/* -=-=-=-=-=-=-=-=- Drive level interfaces -=-=-=-=-=-=-=-=- */
2637
2638/**
2639 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnMountNotify}
2640 */
2641static DECLCALLBACK(void) fdMountNotify(PPDMIMOUNTNOTIFY pInterface)
2642{
2643 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2644 LogFlow(("fdMountNotify:\n"));
2645 fd_revalidate(pDrv);
2646}
2647
2648
2649/**
2650 * @interface_method_impl{PDMIMOUNTNOTIFY,pfnUnmountNotify}
2651 */
2652static DECLCALLBACK(void) fdUnmountNotify(PPDMIMOUNTNOTIFY pInterface)
2653{
2654 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IMountNotify);
2655 LogFlow(("fdUnmountNotify:\n"));
2656 fd_revalidate(pDrv);
2657}
2658
2659
2660/**
2661 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2662 */
2663static DECLCALLBACK(void *) fdQueryInterface (PPDMIBASE pInterface, const char *pszIID)
2664{
2665 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IBase);
2666
2667 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrv->IBase);
2668 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMEDIAPORT, &pDrv->IPort);
2669 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUNTNOTIFY, &pDrv->IMountNotify);
2670 return NULL;
2671}
2672
2673
2674/**
2675 * @interface_method_impl{PDMIMEDIAPORT,pfnQueryDeviceLocation}
2676 */
2677static DECLCALLBACK(int) fdQueryDeviceLocation(PPDMIMEDIAPORT pInterface, const char **ppcszController,
2678 uint32_t *piInstance, uint32_t *piLUN)
2679{
2680 fdrive_t *pDrv = RT_FROM_MEMBER(pInterface, fdrive_t, IPort);
2681 PPDMDEVINS pDevIns = pDrv->pDevIns;
2682
2683 AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
2684 AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
2685 AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
2686
2687 *ppcszController = pDevIns->pReg->szName;
2688 *piInstance = pDevIns->iInstance;
2689 *piLUN = pDrv->iLUN;
2690
2691 return VINF_SUCCESS;
2692}
2693
2694/* -=-=-=-=-=-=-=-=- Controller level interfaces -=-=-=-=-=-=-=-=- */
2695
2696/**
2697 * @interface_method_impl{PDMILEDPORTS,pfnQueryStatusLed}
2698 */
2699static DECLCALLBACK(int) fdcStatusQueryStatusLed(PPDMILEDPORTS pInterface, unsigned iLUN, PPDMLED *ppLed)
2700{
2701 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, ILeds);
2702 if (iLUN < RT_ELEMENTS(pThis->drives)) {
2703 *ppLed = &pThis->drives[iLUN].Led;
2704 Assert ((*ppLed)->u32Magic == PDMLED_MAGIC);
2705 return VINF_SUCCESS;
2706 }
2707 return VERR_PDM_LUN_NOT_FOUND;
2708}
2709
2710
2711/**
2712 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
2713 */
2714static DECLCALLBACK(void *) fdcStatusQueryInterface(PPDMIBASE pInterface, const char *pszIID)
2715{
2716 fdctrl_t *pThis = RT_FROM_MEMBER (pInterface, fdctrl_t, IBaseStatus);
2717
2718 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBaseStatus);
2719 PDMIBASE_RETURN_INTERFACE(pszIID, PDMILEDPORTS, &pThis->ILeds);
2720 return NULL;
2721}
2722
2723
2724/**
2725 * Configure a drive.
2726 *
2727 * @returns VBox status code.
2728 * @param drv The drive in question.
2729 * @param pDevIns The driver instance.
2730 * @param fInit Set if we're at init time and can change the drive type.
2731 */
2732static int fdConfig(fdrive_t *drv, PPDMDEVINS pDevIns, bool fInit)
2733{
2734 static const char * const s_apszDesc[] = {"Floppy Drive A:", "Floppy Drive B"};
2735 int rc;
2736
2737 /*
2738 * Reset the LED just to be on the safe side.
2739 */
2740 Assert (RT_ELEMENTS(s_apszDesc) > drv->iLUN);
2741 Assert (drv->Led.u32Magic == PDMLED_MAGIC);
2742 drv->Led.Actual.u32 = 0;
2743 drv->Led.Asserted.u32 = 0;
2744
2745 /*
2746 * Try attach the block device and get the interfaces.
2747 */
2748 rc = PDMDevHlpDriverAttach (pDevIns, drv->iLUN, &drv->IBase, &drv->pDrvBase, s_apszDesc[drv->iLUN]);
2749 if (RT_SUCCESS (rc)) {
2750 drv->pDrvMedia = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMEDIA);
2751 if (drv->pDrvMedia) {
2752 drv->pDrvMount = PDMIBASE_QUERY_INTERFACE(drv->pDrvBase, PDMIMOUNT);
2753 if (drv->pDrvMount) {
2754 fd_init(drv, fInit);
2755 } else {
2756 AssertMsgFailed (("Configuration error: LUN#%d without mountable interface!\n", drv->iLUN));
2757 rc = VERR_PDM_MISSING_INTERFACE;
2758 }
2759
2760 } else {
2761 AssertMsgFailed (("Configuration error: LUN#%d hasn't a block interface!\n", drv->iLUN));
2762 rc = VERR_PDM_MISSING_INTERFACE;
2763 }
2764 } else {
2765 AssertMsg (rc == VERR_PDM_NO_ATTACHED_DRIVER,
2766 ("Failed to attach LUN#%d. rc=%Rrc\n", drv->iLUN, rc));
2767 switch (rc) {
2768 case VERR_ACCESS_DENIED:
2769 /* Error already cached by DrvHostBase */
2770 break;
2771 case VERR_PDM_NO_ATTACHED_DRIVER:
2772 /* Legal on architectures without a floppy controller */
2773 break;
2774 default:
2775 rc = PDMDevHlpVMSetError (pDevIns, rc, RT_SRC_POS,
2776 N_ ("The floppy controller cannot attach to the floppy drive"));
2777 break;
2778 }
2779 }
2780
2781 if (RT_FAILURE (rc)) {
2782 drv->pDrvBase = NULL;
2783 drv->pDrvMedia = NULL;
2784 drv->pDrvMount = NULL;
2785 }
2786 LogFlow (("fdConfig: returns %Rrc\n", rc));
2787 return rc;
2788}
2789
2790
2791/**
2792 * @interface_method_impl{PDMDEVREG,pfnAttach}
2793 *
2794 * This is called when we change block driver for a floppy drive.
2795 */
2796static DECLCALLBACK(int) fdcAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2797{
2798 fdctrl_t *fdctrl = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2799 fdrive_t *drv;
2800 int rc;
2801 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2802
2803 AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2804 ("The FDC device does not support hotplugging\n"),
2805 VERR_INVALID_PARAMETER);
2806
2807 /*
2808 * Validate.
2809 */
2810 if (iLUN >= 2) {
2811 AssertMsgFailed (("Configuration error: cannot attach or detach any but the first two LUNs - iLUN=%u\n",
2812 iLUN));
2813 return VERR_PDM_DEVINS_NO_ATTACH;
2814 }
2815
2816 /*
2817 * Locate the drive and stuff.
2818 */
2819 drv = &fdctrl->drives[iLUN];
2820
2821 /* the usual paranoia */
2822 AssertRelease (!drv->pDrvBase);
2823 AssertRelease (!drv->pDrvMedia);
2824 AssertRelease (!drv->pDrvMount);
2825
2826 rc = fdConfig (drv, pDevIns, false /*fInit*/);
2827 AssertMsg (rc != VERR_PDM_NO_ATTACHED_DRIVER,
2828 ("Configuration error: failed to configure drive %d, rc=%Rrc\n", iLUN, rc));
2829 if (RT_SUCCESS(rc)) {
2830 fd_revalidate (drv);
2831 }
2832
2833 LogFlow (("floppyAttach: returns %Rrc\n", rc));
2834 return rc;
2835}
2836
2837
2838/**
2839 * @interface_method_impl{PDMDEVREG,pfnDetach}
2840 *
2841 * The floppy drive has been temporarily 'unplugged'.
2842 */
2843static DECLCALLBACK(void) fdcDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2844{
2845 RT_NOREF(fFlags);
2846 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2847 LogFlow (("ideDetach: iLUN=%u\n", iLUN));
2848
2849 switch (iLUN)
2850 {
2851 case 0:
2852 case 1:
2853 {
2854 fdrive_t *drv = &pThis->drives[iLUN];
2855 drv->pDrvBase = NULL;
2856 drv->pDrvMedia = NULL;
2857 drv->pDrvMount = NULL;
2858 break;
2859 }
2860
2861 default:
2862 AssertMsgFailed(("Cannot detach LUN#%d!\n", iLUN));
2863 break;
2864 }
2865}
2866
2867
2868/**
2869 * @interface_method_impl{PDMDEVREG,pfnReset}
2870 *
2871 * I haven't check the specs on what's supposed to happen on reset, but we
2872 * should get any 'FATAL: floppy recal:f07 ctrl not ready' when resetting
2873 * at wrong time like we do if this was all void.
2874 */
2875static DECLCALLBACK(void) fdcReset(PPDMDEVINS pDevIns)
2876{
2877 fdctrl_t *pThis = PDMINS_2_DATA (pDevIns, fdctrl_t *);
2878 unsigned i;
2879 LogFlow (("fdcReset:\n"));
2880
2881 fdctrl_reset(pThis, 0);
2882
2883 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
2884 fd_revalidate(&pThis->drives[i]);
2885}
2886
2887
2888/**
2889 * @interface_method_impl{PDMDEVREG,pfnConstruct}
2890 */
2891static DECLCALLBACK(int) fdcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2892{
2893 RT_NOREF(iInstance);
2894 fdctrl_t *pThis = PDMINS_2_DATA(pDevIns, fdctrl_t *);
2895 int rc;
2896 unsigned i, j;
2897 int ii;
2898 bool mem_mapped;
2899 uint16_t io_base;
2900 uint8_t irq_lvl, dma_chann;
2901 PPDMIBASE pBase;
2902
2903 Assert(iInstance == 0);
2904 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2905
2906 /*
2907 * Validate configuration.
2908 */
2909 if (!CFGMR3AreValuesValid(pCfg, "IRQ\0DMA\0MemMapped\0IOBase\0"))
2910 return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
2911
2912 /*
2913 * Read the configuration.
2914 */
2915 rc = CFGMR3QueryU8Def(pCfg, "IRQ", &irq_lvl, 6);
2916 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 IRQ, rc=%Rrc\n", rc), rc);
2917
2918 rc = CFGMR3QueryU8Def(pCfg, "DMA", &dma_chann, 2);
2919 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U8 DMA, rc=%Rrc\n", rc), rc);
2920
2921 rc = CFGMR3QueryU16Def(pCfg, "IOBase", &io_base, 0x3f0);
2922 AssertMsgRCReturn(rc, ("Configuration error: Failed to read U16 IOBase, rc=%Rrc\n", rc), rc);
2923
2924 rc = CFGMR3QueryBoolDef(pCfg, "MemMapped", &mem_mapped, false);
2925 AssertMsgRCReturn(rc, ("Configuration error: Failed to read bool value MemMapped rc=%Rrc\n", rc), rc);
2926
2927 /*
2928 * Initialize data.
2929 */
2930 LogFlow(("fdcConstruct: irq_lvl=%d dma_chann=%d io_base=%#x\n", irq_lvl, dma_chann, io_base));
2931 pThis->pDevIns = pDevIns;
2932 pThis->version = 0x90; /* Intel 82078 controller */
2933 pThis->irq_lvl = irq_lvl;
2934 pThis->dma_chann = dma_chann;
2935 pThis->io_base = io_base;
2936 pThis->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
2937 pThis->num_floppies = MAX_FD;
2938
2939 /* Fill 'command_to_handler' lookup table */
2940 for (ii = RT_ELEMENTS(handlers) - 1; ii >= 0; ii--)
2941 for (j = 0; j < sizeof(command_to_handler); j++)
2942 if ((j & handlers[ii].mask) == handlers[ii].value)
2943 command_to_handler[j] = ii;
2944
2945 pThis->IBaseStatus.pfnQueryInterface = fdcStatusQueryInterface;
2946 pThis->ILeds.pfnQueryStatusLed = fdcStatusQueryStatusLed;
2947
2948 for (i = 0; i < RT_ELEMENTS(pThis->drives); ++i)
2949 {
2950 fdrive_t *pDrv = &pThis->drives[i];
2951
2952 pDrv->drive = FDRIVE_DRV_NONE;
2953 pDrv->iLUN = i;
2954 pDrv->pDevIns = pDevIns;
2955
2956 pDrv->IBase.pfnQueryInterface = fdQueryInterface;
2957 pDrv->IMountNotify.pfnMountNotify = fdMountNotify;
2958 pDrv->IMountNotify.pfnUnmountNotify = fdUnmountNotify;
2959 pDrv->IPort.pfnQueryDeviceLocation = fdQueryDeviceLocation;
2960 pDrv->Led.u32Magic = PDMLED_MAGIC;
2961 }
2962
2963 /*
2964 * Create the FDC timer.
2965 */
2966 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, fdcTimerCallback, pThis,
2967 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "FDC Timer", &pThis->result_timer);
2968 if (RT_FAILURE(rc))
2969 return rc;
2970
2971 /*
2972 * Register DMA channel.
2973 */
2974 if (pThis->dma_chann != 0xff)
2975 {
2976 rc = PDMDevHlpDMARegister(pDevIns, dma_chann, &fdctrl_transfer_handler, pThis);
2977 if (RT_FAILURE(rc))
2978 return rc;
2979 }
2980
2981 /*
2982 * IO / MMIO.
2983 */
2984 if (mem_mapped)
2985 {
2986 AssertMsgFailed(("Memory mapped floppy not support by now\n"));
2987 return VERR_NOT_SUPPORTED;
2988#if 0
2989 FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
2990 io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
2991 cpu_register_physical_memory(base, 0x08, io_mem);
2992#endif
2993 }
2994 else
2995 {
2996 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x1, 5, pThis,
2997 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#1");
2998 if (RT_FAILURE(rc))
2999 return rc;
3000
3001 rc = PDMDevHlpIOPortRegister(pDevIns, io_base + 0x7, 1, pThis,
3002 fdcIoPortWrite, fdcIoPortRead, NULL, NULL, "FDC#2");
3003 if (RT_FAILURE(rc))
3004 return rc;
3005 }
3006
3007 /*
3008 * Register the saved state data unit.
3009 */
3010 rc = PDMDevHlpSSMRegister(pDevIns, FDC_SAVESTATE_CURRENT, sizeof(*pThis), fdcSaveExec, fdcLoadExec);
3011 if (RT_FAILURE(rc))
3012 return rc;
3013
3014 /*
3015 * Attach the status port (optional).
3016 */
3017 rc = PDMDevHlpDriverAttach(pDevIns, PDM_STATUS_LUN, &pThis->IBaseStatus, &pBase, "Status Port");
3018 if (RT_SUCCESS (rc))
3019 pThis->pLedsConnector = PDMIBASE_QUERY_INTERFACE(pBase, PDMILEDCONNECTORS);
3020 else if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
3021 {
3022 AssertMsgFailed(("Failed to attach to status driver. rc=%Rrc\n", rc));
3023 return rc;
3024 }
3025
3026 /*
3027 * Initialize drives.
3028 */
3029 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
3030 {
3031 fdrive_t *pDrv = &pThis->drives[i];
3032 rc = fdConfig(pDrv, pDevIns, true /*fInit*/);
3033 if ( RT_FAILURE(rc)
3034 && rc != VERR_PDM_NO_ATTACHED_DRIVER)
3035 {
3036 AssertMsgFailed(("Configuration error: failed to configure drive %d, rc=%Rrc\n", i, rc));
3037 return rc;
3038 }
3039 }
3040
3041 fdctrl_reset(pThis, 0);
3042
3043 for (i = 0; i < RT_ELEMENTS(pThis->drives); i++)
3044 fd_revalidate(&pThis->drives[i]);
3045
3046 return VINF_SUCCESS;
3047}
3048
3049
3050/**
3051 * The device registration structure.
3052 */
3053const PDMDEVREG g_DeviceFloppyController =
3054{
3055 /* u32Version */
3056 PDM_DEVREG_VERSION,
3057 /* szName */
3058 "i82078",
3059 /* szRCMod */
3060 "",
3061 /* szR0Mod */
3062 "",
3063 /* pszDescription */
3064 "Floppy drive controller (Intel 82078)",
3065 /* fFlags */
3066 PDM_DEVREG_FLAGS_DEFAULT_BITS,
3067 /* fClass */
3068 PDM_DEVREG_CLASS_STORAGE,
3069 /* cMaxInstances */
3070 1,
3071 /* cbInstance */
3072 sizeof(fdctrl_t),
3073 /* pfnConstruct */
3074 fdcConstruct,
3075 /* pfnDestruct */
3076 NULL,
3077 /* pfnRelocate */
3078 NULL,
3079 /* pfnMemSetup */
3080 NULL,
3081 /* pfnPowerOn */
3082 NULL,
3083 /* pfnReset */
3084 fdcReset,
3085 /* pfnSuspend */
3086 NULL,
3087 /* pfnResume */
3088 NULL,
3089 /* pfnAttach */
3090 fdcAttach,
3091 /* pfnDetach */
3092 fdcDetach,
3093 /* pfnQueryInterface. */
3094 NULL,
3095 /* pfnInitComplete */
3096 NULL,
3097 /* pfnPowerOff */
3098 NULL,
3099 /* pfnSoftReset */
3100 NULL,
3101 /* u32VersionEnd */
3102 PDM_DEVREG_VERSION
3103};
3104
3105#endif /* VBOX */
3106
3107/*
3108 * Local Variables:
3109 * mode: c
3110 * c-file-style: "k&r"
3111 * indent-tabs-mode: nil
3112 * End:
3113 */
3114
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