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1.1 root 1: /*
2: * QEMU Floppy disk emulator (Intel 82078)
1.1.1.3 root 3: *
4: * Copyright (c) 2003, 2007 Jocelyn Mayer
1.1.1.4 root 5: * Copyright (c) 2008 Herv� Poussineau
1.1.1.3 root 6: *
1.1 root 7: * Permission is hereby granted, free of charge, to any person obtaining a copy
8: * of this software and associated documentation files (the "Software"), to deal
9: * in the Software without restriction, including without limitation the rights
10: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11: * copies of the Software, and to permit persons to whom the Software is
12: * furnished to do so, subject to the following conditions:
13: *
14: * The above copyright notice and this permission notice shall be included in
15: * all copies or substantial portions of the Software.
16: *
17: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23: * THE SOFTWARE.
24: */
25: /*
26: * The controller is used in Sun4m systems in a slightly different
27: * way. There are changes in DOR register and DMA is not available.
28: */
1.1.1.5 root 29:
1.1.1.3 root 30: #include "hw.h"
31: #include "fdc.h"
1.1.1.10! root 32: #include "qemu-error.h"
1.1.1.3 root 33: #include "qemu-timer.h"
34: #include "isa.h"
1.1.1.5 root 35: #include "sysbus.h"
36: #include "qdev-addr.h"
1.1 root 37:
38: /********************************************************/
39: /* debug Floppy devices */
40: //#define DEBUG_FLOPPY
41:
42: #ifdef DEBUG_FLOPPY
1.1.1.5 root 43: #define FLOPPY_DPRINTF(fmt, ...) \
44: do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
1.1 root 45: #else
1.1.1.5 root 46: #define FLOPPY_DPRINTF(fmt, ...)
1.1 root 47: #endif
48:
1.1.1.5 root 49: #define FLOPPY_ERROR(fmt, ...) \
50: do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
1.1 root 51:
52: /********************************************************/
53: /* Floppy drive emulation */
54:
1.1.1.4 root 55: #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
56: #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
57:
1.1 root 58: /* Will always be a fixed parameter for us */
1.1.1.4 root 59: #define FD_SECTOR_LEN 512
60: #define FD_SECTOR_SC 2 /* Sector size code */
61: #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
1.1 root 62:
63: /* Floppy disk drive emulation */
1.1.1.10! root 64: typedef enum FDiskType {
1.1 root 65: FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
66: FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
67: FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
68: FDRIVE_DISK_USER = 0x04, /* User defined geometry */
69: FDRIVE_DISK_NONE = 0x05, /* No disk */
1.1.1.10! root 70: } FDiskType;
1.1 root 71:
1.1.1.10! root 72: typedef enum FDriveType {
1.1 root 73: FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
74: FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
75: FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
76: FDRIVE_DRV_NONE = 0x03, /* No drive connected */
1.1.1.10! root 77: } FDriveType;
1.1 root 78:
1.1.1.10! root 79: typedef enum FDiskFlags {
1.1 root 80: FDISK_DBL_SIDES = 0x01,
1.1.1.10! root 81: } FDiskFlags;
1.1 root 82:
1.1.1.10! root 83: typedef struct FDrive {
1.1 root 84: BlockDriverState *bs;
85: /* Drive status */
1.1.1.10! root 86: FDriveType drive;
1.1 root 87: uint8_t perpendicular; /* 2.88 MB access mode */
88: /* Position */
89: uint8_t head;
90: uint8_t track;
91: uint8_t sect;
92: /* Media */
1.1.1.10! root 93: FDiskFlags flags;
1.1 root 94: uint8_t last_sect; /* Nb sector per track */
95: uint8_t max_track; /* Nb of tracks */
96: uint16_t bps; /* Bytes per sector */
97: uint8_t ro; /* Is read-only */
1.1.1.10! root 98: } FDrive;
1.1 root 99:
1.1.1.10! root 100: static void fd_init(FDrive *drv)
1.1 root 101: {
102: /* Drive */
103: drv->drive = FDRIVE_DRV_NONE;
104: drv->perpendicular = 0;
105: /* Disk */
106: drv->last_sect = 0;
107: drv->max_track = 0;
108: }
109:
1.1.1.10! root 110: static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
! 111: uint8_t last_sect)
1.1 root 112: {
113: return (((track * 2) + head) * last_sect) + sect - 1;
114: }
115:
116: /* Returns current position, in sectors, for given drive */
1.1.1.10! root 117: static int fd_sector(FDrive *drv)
1.1 root 118: {
1.1.1.10! root 119: return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect);
1.1 root 120: }
121:
1.1.1.4 root 122: /* Seek to a new position:
123: * returns 0 if already on right track
124: * returns 1 if track changed
125: * returns 2 if track is invalid
126: * returns 3 if sector is invalid
127: * returns 4 if seek is disabled
128: */
1.1.1.10! root 129: static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
! 130: int enable_seek)
1.1 root 131: {
132: uint32_t sector;
133: int ret;
134:
135: if (track > drv->max_track ||
1.1.1.3 root 136: (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
1.1 root 137: FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
138: head, track, sect, 1,
139: (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
140: drv->max_track, drv->last_sect);
141: return 2;
142: }
143: if (sect > drv->last_sect) {
144: FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
145: head, track, sect, 1,
146: (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
147: drv->max_track, drv->last_sect);
148: return 3;
149: }
1.1.1.10! root 150: sector = fd_sector_calc(head, track, sect, drv->last_sect);
1.1 root 151: ret = 0;
152: if (sector != fd_sector(drv)) {
153: #if 0
154: if (!enable_seek) {
155: FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
156: head, track, sect, 1, drv->max_track, drv->last_sect);
157: return 4;
158: }
159: #endif
160: drv->head = head;
1.1.1.3 root 161: if (drv->track != track)
162: ret = 1;
1.1 root 163: drv->track = track;
164: drv->sect = sect;
165: }
166:
167: return ret;
168: }
169:
170: /* Set drive back to track 0 */
1.1.1.10! root 171: static void fd_recalibrate(FDrive *drv)
1.1 root 172: {
173: FLOPPY_DPRINTF("recalibrate\n");
174: drv->head = 0;
175: drv->track = 0;
176: drv->sect = 1;
177: }
178:
179: /* Recognize floppy formats */
1.1.1.10! root 180: typedef struct FDFormat {
! 181: FDriveType drive;
! 182: FDiskType disk;
1.1 root 183: uint8_t last_sect;
184: uint8_t max_track;
185: uint8_t max_head;
1.1.1.3 root 186: const char *str;
1.1.1.10! root 187: } FDFormat;
1.1 root 188:
1.1.1.10! root 189: static const FDFormat fd_formats[] = {
1.1 root 190: /* First entry is default format */
191: /* 1.44 MB 3"1/2 floppy disks */
192: { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
193: { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
194: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
195: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
196: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
197: { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
198: { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
199: { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
200: /* 2.88 MB 3"1/2 floppy disks */
201: { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
202: { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
203: { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
204: { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
205: { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
206: /* 720 kB 3"1/2 floppy disks */
207: { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
208: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
209: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
210: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
211: { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
212: { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
213: /* 1.2 MB 5"1/4 floppy disks */
214: { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
215: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
216: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
217: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
218: { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
219: /* 720 kB 5"1/4 floppy disks */
220: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
221: { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
222: /* 360 kB 5"1/4 floppy disks */
223: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
224: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
225: { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
226: { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
1.1.1.3 root 227: /* 320 kB 5"1/4 floppy disks */
1.1 root 228: { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
229: { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
230: /* 360 kB must match 5"1/4 better than 3"1/2... */
231: { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
232: /* end */
233: { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
234: };
235:
236: /* Revalidate a disk drive after a disk change */
1.1.1.10! root 237: static void fd_revalidate(FDrive *drv)
1.1 root 238: {
1.1.1.10! root 239: const FDFormat *parse;
1.1.1.3 root 240: uint64_t nb_sectors, size;
1.1 root 241: int i, first_match, match;
242: int nb_heads, max_track, last_sect, ro;
243:
244: FLOPPY_DPRINTF("revalidate\n");
245: if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
1.1.1.3 root 246: ro = bdrv_is_read_only(drv->bs);
247: bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
248: if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
249: FLOPPY_DPRINTF("User defined disk (%d %d %d)",
1.1 root 250: nb_heads - 1, max_track, last_sect);
1.1.1.3 root 251: } else {
252: bdrv_get_geometry(drv->bs, &nb_sectors);
253: match = -1;
254: first_match = -1;
255: for (i = 0;; i++) {
256: parse = &fd_formats[i];
257: if (parse->drive == FDRIVE_DRV_NONE)
258: break;
259: if (drv->drive == parse->drive ||
260: drv->drive == FDRIVE_DRV_NONE) {
261: size = (parse->max_head + 1) * parse->max_track *
262: parse->last_sect;
263: if (nb_sectors == size) {
264: match = i;
265: break;
266: }
267: if (first_match == -1)
268: first_match = i;
269: }
270: }
271: if (match == -1) {
272: if (first_match == -1)
273: match = 1;
274: else
275: match = first_match;
276: parse = &fd_formats[match];
277: }
278: nb_heads = parse->max_head + 1;
279: max_track = parse->max_track;
280: last_sect = parse->last_sect;
281: drv->drive = parse->drive;
282: FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
1.1 root 283: nb_heads, max_track, last_sect, ro ? "ro" : "rw");
1.1.1.3 root 284: }
285: if (nb_heads == 1) {
286: drv->flags &= ~FDISK_DBL_SIDES;
287: } else {
288: drv->flags |= FDISK_DBL_SIDES;
289: }
290: drv->max_track = max_track;
291: drv->last_sect = last_sect;
292: drv->ro = ro;
1.1 root 293: } else {
1.1.1.3 root 294: FLOPPY_DPRINTF("No disk in drive\n");
1.1 root 295: drv->last_sect = 0;
1.1.1.3 root 296: drv->max_track = 0;
297: drv->flags &= ~FDISK_DBL_SIDES;
1.1 root 298: }
299: }
300:
301: /********************************************************/
302: /* Intel 82078 floppy disk controller emulation */
303:
1.1.1.10! root 304: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
! 305: static void fdctrl_reset_fifo(FDCtrl *fdctrl);
1.1 root 306: static int fdctrl_transfer_handler (void *opaque, int nchan,
307: int dma_pos, int dma_len);
1.1.1.10! root 308: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0);
1.1 root 309:
1.1.1.10! root 310: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
! 311: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
! 312: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl);
! 313: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value);
! 314: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl);
! 315: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value);
! 316: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl);
! 317: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
! 318: static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
! 319: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
! 320: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
1.1 root 321:
322: enum {
323: FD_DIR_WRITE = 0,
324: FD_DIR_READ = 1,
325: FD_DIR_SCANE = 2,
326: FD_DIR_SCANL = 3,
327: FD_DIR_SCANH = 4,
328: };
329:
330: enum {
1.1.1.4 root 331: FD_STATE_MULTI = 0x01, /* multi track flag */
332: FD_STATE_FORMAT = 0x02, /* format flag */
333: FD_STATE_SEEK = 0x04, /* seek flag */
334: };
335:
336: enum {
337: FD_REG_SRA = 0x00,
338: FD_REG_SRB = 0x01,
339: FD_REG_DOR = 0x02,
340: FD_REG_TDR = 0x03,
341: FD_REG_MSR = 0x04,
342: FD_REG_DSR = 0x04,
343: FD_REG_FIFO = 0x05,
344: FD_REG_DIR = 0x07,
345: };
346:
347: enum {
348: FD_CMD_READ_TRACK = 0x02,
349: FD_CMD_SPECIFY = 0x03,
350: FD_CMD_SENSE_DRIVE_STATUS = 0x04,
351: FD_CMD_WRITE = 0x05,
352: FD_CMD_READ = 0x06,
353: FD_CMD_RECALIBRATE = 0x07,
354: FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
355: FD_CMD_WRITE_DELETED = 0x09,
356: FD_CMD_READ_ID = 0x0a,
357: FD_CMD_READ_DELETED = 0x0c,
358: FD_CMD_FORMAT_TRACK = 0x0d,
359: FD_CMD_DUMPREG = 0x0e,
360: FD_CMD_SEEK = 0x0f,
361: FD_CMD_VERSION = 0x10,
362: FD_CMD_SCAN_EQUAL = 0x11,
363: FD_CMD_PERPENDICULAR_MODE = 0x12,
364: FD_CMD_CONFIGURE = 0x13,
365: FD_CMD_LOCK = 0x14,
366: FD_CMD_VERIFY = 0x16,
367: FD_CMD_POWERDOWN_MODE = 0x17,
368: FD_CMD_PART_ID = 0x18,
369: FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
370: FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
1.1.1.9 root 371: FD_CMD_SAVE = 0x2e,
1.1.1.4 root 372: FD_CMD_OPTION = 0x33,
1.1.1.9 root 373: FD_CMD_RESTORE = 0x4e,
1.1.1.4 root 374: FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
375: FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
376: FD_CMD_FORMAT_AND_WRITE = 0xcd,
377: FD_CMD_RELATIVE_SEEK_IN = 0xcf,
378: };
379:
380: enum {
381: FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
382: FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
383: FD_CONFIG_POLL = 0x10, /* Poll enabled */
384: FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
385: FD_CONFIG_EIS = 0x40, /* No implied seeks */
386: };
387:
388: enum {
389: FD_SR0_EQPMT = 0x10,
390: FD_SR0_SEEK = 0x20,
391: FD_SR0_ABNTERM = 0x40,
392: FD_SR0_INVCMD = 0x80,
393: FD_SR0_RDYCHG = 0xc0,
394: };
395:
396: enum {
397: FD_SR1_EC = 0x80, /* End of cylinder */
398: };
399:
400: enum {
401: FD_SR2_SNS = 0x04, /* Scan not satisfied */
402: FD_SR2_SEH = 0x08, /* Scan equal hit */
403: };
404:
405: enum {
406: FD_SRA_DIR = 0x01,
407: FD_SRA_nWP = 0x02,
408: FD_SRA_nINDX = 0x04,
409: FD_SRA_HDSEL = 0x08,
410: FD_SRA_nTRK0 = 0x10,
411: FD_SRA_STEP = 0x20,
412: FD_SRA_nDRV2 = 0x40,
413: FD_SRA_INTPEND = 0x80,
414: };
415:
416: enum {
417: FD_SRB_MTR0 = 0x01,
418: FD_SRB_MTR1 = 0x02,
419: FD_SRB_WGATE = 0x04,
420: FD_SRB_RDATA = 0x08,
421: FD_SRB_WDATA = 0x10,
422: FD_SRB_DR0 = 0x20,
423: };
424:
425: enum {
426: #if MAX_FD == 4
427: FD_DOR_SELMASK = 0x03,
428: #else
429: FD_DOR_SELMASK = 0x01,
430: #endif
431: FD_DOR_nRESET = 0x04,
432: FD_DOR_DMAEN = 0x08,
433: FD_DOR_MOTEN0 = 0x10,
434: FD_DOR_MOTEN1 = 0x20,
435: FD_DOR_MOTEN2 = 0x40,
436: FD_DOR_MOTEN3 = 0x80,
437: };
438:
439: enum {
440: #if MAX_FD == 4
441: FD_TDR_BOOTSEL = 0x0c,
442: #else
443: FD_TDR_BOOTSEL = 0x04,
444: #endif
445: };
446:
447: enum {
448: FD_DSR_DRATEMASK= 0x03,
449: FD_DSR_PWRDOWN = 0x40,
450: FD_DSR_SWRESET = 0x80,
451: };
452:
453: enum {
454: FD_MSR_DRV0BUSY = 0x01,
455: FD_MSR_DRV1BUSY = 0x02,
456: FD_MSR_DRV2BUSY = 0x04,
457: FD_MSR_DRV3BUSY = 0x08,
458: FD_MSR_CMDBUSY = 0x10,
459: FD_MSR_NONDMA = 0x20,
460: FD_MSR_DIO = 0x40,
461: FD_MSR_RQM = 0x80,
462: };
463:
464: enum {
465: FD_DIR_DSKCHG = 0x80,
1.1 root 466: };
467:
468: #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
469: #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
470: #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
471:
1.1.1.10! root 472: struct FDCtrl {
1.1 root 473: /* Controller's identification */
474: uint8_t version;
475: /* HW */
1.1.1.3 root 476: qemu_irq irq;
1.1 root 477: int dma_chann;
478: /* Controller state */
479: QEMUTimer *result_timer;
1.1.1.4 root 480: uint8_t sra;
481: uint8_t srb;
482: uint8_t dor;
1.1.1.6 root 483: uint8_t dor_vmstate; /* only used as temp during vmstate */
1.1.1.4 root 484: uint8_t tdr;
485: uint8_t dsr;
486: uint8_t msr;
1.1 root 487: uint8_t cur_drv;
1.1.1.4 root 488: uint8_t status0;
489: uint8_t status1;
490: uint8_t status2;
1.1 root 491: /* Command FIFO */
1.1.1.3 root 492: uint8_t *fifo;
1.1.1.6 root 493: int32_t fifo_size;
1.1 root 494: uint32_t data_pos;
495: uint32_t data_len;
496: uint8_t data_state;
497: uint8_t data_dir;
498: uint8_t eot; /* last wanted sector */
499: /* States kept only to be returned back */
500: /* Timers state */
501: uint8_t timer0;
502: uint8_t timer1;
503: /* precompensation */
504: uint8_t precomp_trk;
505: uint8_t config;
506: uint8_t lock;
507: /* Power down config (also with status regB access mode */
508: uint8_t pwrd;
1.1.1.3 root 509: /* Sun4m quirks? */
510: int sun4m;
1.1 root 511: /* Floppy drives */
1.1.1.6 root 512: uint8_t num_floppies;
1.1.1.10! root 513: FDrive drives[MAX_FD];
1.1.1.4 root 514: int reset_sensei;
1.1 root 515: };
516:
1.1.1.10! root 517: typedef struct FDCtrlSysBus {
1.1.1.6 root 518: SysBusDevice busdev;
1.1.1.10! root 519: struct FDCtrl state;
! 520: } FDCtrlSysBus;
1.1.1.6 root 521:
1.1.1.10! root 522: typedef struct FDCtrlISABus {
1.1.1.6 root 523: ISADevice busdev;
1.1.1.10! root 524: struct FDCtrl state;
! 525: } FDCtrlISABus;
1.1.1.6 root 526:
1.1 root 527: static uint32_t fdctrl_read (void *opaque, uint32_t reg)
528: {
1.1.1.10! root 529: FDCtrl *fdctrl = opaque;
1.1 root 530: uint32_t retval;
531:
1.1.1.4 root 532: switch (reg) {
533: case FD_REG_SRA:
534: retval = fdctrl_read_statusA(fdctrl);
1.1.1.3 root 535: break;
1.1.1.4 root 536: case FD_REG_SRB:
1.1.1.3 root 537: retval = fdctrl_read_statusB(fdctrl);
538: break;
1.1.1.4 root 539: case FD_REG_DOR:
1.1.1.3 root 540: retval = fdctrl_read_dor(fdctrl);
541: break;
1.1.1.4 root 542: case FD_REG_TDR:
1.1 root 543: retval = fdctrl_read_tape(fdctrl);
1.1.1.3 root 544: break;
1.1.1.4 root 545: case FD_REG_MSR:
1.1 root 546: retval = fdctrl_read_main_status(fdctrl);
1.1.1.3 root 547: break;
1.1.1.4 root 548: case FD_REG_FIFO:
1.1 root 549: retval = fdctrl_read_data(fdctrl);
1.1.1.3 root 550: break;
1.1.1.4 root 551: case FD_REG_DIR:
1.1 root 552: retval = fdctrl_read_dir(fdctrl);
1.1.1.3 root 553: break;
1.1 root 554: default:
1.1.1.3 root 555: retval = (uint32_t)(-1);
556: break;
1.1 root 557: }
558: FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
559:
560: return retval;
561: }
562:
563: static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
564: {
1.1.1.10! root 565: FDCtrl *fdctrl = opaque;
1.1 root 566:
567: FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
568:
1.1.1.4 root 569: switch (reg) {
570: case FD_REG_DOR:
1.1.1.3 root 571: fdctrl_write_dor(fdctrl, value);
572: break;
1.1.1.4 root 573: case FD_REG_TDR:
1.1 root 574: fdctrl_write_tape(fdctrl, value);
1.1.1.3 root 575: break;
1.1.1.4 root 576: case FD_REG_DSR:
1.1 root 577: fdctrl_write_rate(fdctrl, value);
1.1.1.3 root 578: break;
1.1.1.4 root 579: case FD_REG_FIFO:
1.1 root 580: fdctrl_write_data(fdctrl, value);
1.1.1.3 root 581: break;
1.1 root 582: default:
1.1.1.3 root 583: break;
1.1 root 584: }
585: }
586:
1.1.1.4 root 587: static uint32_t fdctrl_read_port (void *opaque, uint32_t reg)
588: {
589: return fdctrl_read(opaque, reg & 7);
590: }
591:
592: static void fdctrl_write_port (void *opaque, uint32_t reg, uint32_t value)
593: {
594: fdctrl_write(opaque, reg & 7, value);
595: }
596:
1.1 root 597: static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg)
598: {
1.1.1.3 root 599: return fdctrl_read(opaque, (uint32_t)reg);
1.1 root 600: }
601:
1.1.1.3 root 602: static void fdctrl_write_mem (void *opaque,
1.1 root 603: target_phys_addr_t reg, uint32_t value)
604: {
1.1.1.3 root 605: fdctrl_write(opaque, (uint32_t)reg, value);
1.1 root 606: }
607:
1.1.1.6 root 608: static CPUReadMemoryFunc * const fdctrl_mem_read[3] = {
1.1 root 609: fdctrl_read_mem,
610: fdctrl_read_mem,
611: fdctrl_read_mem,
612: };
613:
1.1.1.6 root 614: static CPUWriteMemoryFunc * const fdctrl_mem_write[3] = {
1.1 root 615: fdctrl_write_mem,
616: fdctrl_write_mem,
617: fdctrl_write_mem,
618: };
619:
1.1.1.6 root 620: static CPUReadMemoryFunc * const fdctrl_mem_read_strict[3] = {
1.1.1.3 root 621: fdctrl_read_mem,
622: NULL,
623: NULL,
624: };
625:
1.1.1.6 root 626: static CPUWriteMemoryFunc * const fdctrl_mem_write_strict[3] = {
1.1.1.3 root 627: fdctrl_write_mem,
628: NULL,
629: NULL,
630: };
631:
1.1.1.6 root 632: static const VMStateDescription vmstate_fdrive = {
633: .name = "fdrive",
634: .version_id = 1,
635: .minimum_version_id = 1,
636: .minimum_version_id_old = 1,
637: .fields = (VMStateField []) {
1.1.1.10! root 638: VMSTATE_UINT8(head, FDrive),
! 639: VMSTATE_UINT8(track, FDrive),
! 640: VMSTATE_UINT8(sect, FDrive),
1.1.1.6 root 641: VMSTATE_END_OF_LIST()
642: }
643: };
1.1.1.3 root 644:
1.1.1.6 root 645: static void fdc_pre_save(void *opaque)
1.1.1.3 root 646: {
1.1.1.10! root 647: FDCtrl *s = opaque;
1.1.1.4 root 648:
1.1.1.6 root 649: s->dor_vmstate = s->dor | GET_CUR_DRV(s);
1.1.1.3 root 650: }
651:
1.1.1.6 root 652: static int fdc_post_load(void *opaque, int version_id)
1.1.1.3 root 653: {
1.1.1.10! root 654: FDCtrl *s = opaque;
1.1.1.3 root 655:
1.1.1.6 root 656: SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK);
657: s->dor = s->dor_vmstate & ~FD_DOR_SELMASK;
1.1.1.3 root 658: return 0;
659: }
660:
1.1.1.6 root 661: static const VMStateDescription vmstate_fdc = {
662: .name = "fdc",
663: .version_id = 2,
664: .minimum_version_id = 2,
665: .minimum_version_id_old = 2,
666: .pre_save = fdc_pre_save,
667: .post_load = fdc_post_load,
668: .fields = (VMStateField []) {
669: /* Controller State */
1.1.1.10! root 670: VMSTATE_UINT8(sra, FDCtrl),
! 671: VMSTATE_UINT8(srb, FDCtrl),
! 672: VMSTATE_UINT8(dor_vmstate, FDCtrl),
! 673: VMSTATE_UINT8(tdr, FDCtrl),
! 674: VMSTATE_UINT8(dsr, FDCtrl),
! 675: VMSTATE_UINT8(msr, FDCtrl),
! 676: VMSTATE_UINT8(status0, FDCtrl),
! 677: VMSTATE_UINT8(status1, FDCtrl),
! 678: VMSTATE_UINT8(status2, FDCtrl),
1.1.1.6 root 679: /* Command FIFO */
1.1.1.10! root 680: VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8,
! 681: uint8_t),
! 682: VMSTATE_UINT32(data_pos, FDCtrl),
! 683: VMSTATE_UINT32(data_len, FDCtrl),
! 684: VMSTATE_UINT8(data_state, FDCtrl),
! 685: VMSTATE_UINT8(data_dir, FDCtrl),
! 686: VMSTATE_UINT8(eot, FDCtrl),
1.1.1.6 root 687: /* States kept only to be returned back */
1.1.1.10! root 688: VMSTATE_UINT8(timer0, FDCtrl),
! 689: VMSTATE_UINT8(timer1, FDCtrl),
! 690: VMSTATE_UINT8(precomp_trk, FDCtrl),
! 691: VMSTATE_UINT8(config, FDCtrl),
! 692: VMSTATE_UINT8(lock, FDCtrl),
! 693: VMSTATE_UINT8(pwrd, FDCtrl),
! 694: VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl),
! 695: VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1,
! 696: vmstate_fdrive, FDrive),
1.1.1.6 root 697: VMSTATE_END_OF_LIST()
1.1.1.4 root 698: }
1.1.1.6 root 699: };
1.1.1.3 root 700:
1.1.1.6 root 701: static void fdctrl_external_reset_sysbus(DeviceState *d)
702: {
1.1.1.10! root 703: FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
! 704: FDCtrl *s = &sys->state;
1.1.1.6 root 705:
706: fdctrl_reset(s, 0);
1.1.1.3 root 707: }
708:
1.1.1.6 root 709: static void fdctrl_external_reset_isa(DeviceState *d)
1.1.1.3 root 710: {
1.1.1.10! root 711: FDCtrlISABus *isa = container_of(d, FDCtrlISABus, busdev.qdev);
! 712: FDCtrl *s = &isa->state;
1.1.1.3 root 713:
714: fdctrl_reset(s, 0);
715: }
716:
1.1.1.4 root 717: static void fdctrl_handle_tc(void *opaque, int irq, int level)
1.1.1.3 root 718: {
1.1.1.10! root 719: //FDCtrl *s = opaque;
1.1.1.3 root 720:
1.1.1.4 root 721: if (level) {
722: // XXX
723: FLOPPY_DPRINTF("TC pulsed\n");
1.1 root 724: }
1.1.1.3 root 725: }
726:
1.1 root 727: /* XXX: may change if moved to bdrv */
1.1.1.10! root 728: int fdctrl_get_drive_type(FDCtrl *fdctrl, int drive_num)
1.1 root 729: {
730: return fdctrl->drives[drive_num].drive;
731: }
732:
733: /* Change IRQ state */
1.1.1.10! root 734: static void fdctrl_reset_irq(FDCtrl *fdctrl)
1.1 root 735: {
1.1.1.4 root 736: if (!(fdctrl->sra & FD_SRA_INTPEND))
737: return;
1.1 root 738: FLOPPY_DPRINTF("Reset interrupt\n");
1.1.1.3 root 739: qemu_set_irq(fdctrl->irq, 0);
1.1.1.4 root 740: fdctrl->sra &= ~FD_SRA_INTPEND;
1.1 root 741: }
742:
1.1.1.10! root 743: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0)
1.1 root 744: {
1.1.1.4 root 745: /* Sparc mutation */
746: if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) {
747: /* XXX: not sure */
748: fdctrl->msr &= ~FD_MSR_CMDBUSY;
749: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
750: fdctrl->status0 = status0;
1.1.1.3 root 751: return;
1.1 root 752: }
1.1.1.4 root 753: if (!(fdctrl->sra & FD_SRA_INTPEND)) {
1.1.1.3 root 754: qemu_set_irq(fdctrl->irq, 1);
1.1.1.4 root 755: fdctrl->sra |= FD_SRA_INTPEND;
1.1 root 756: }
1.1.1.4 root 757: fdctrl->reset_sensei = 0;
758: fdctrl->status0 = status0;
759: FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
1.1 root 760: }
761:
762: /* Reset controller */
1.1.1.10! root 763: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
1.1 root 764: {
765: int i;
766:
767: FLOPPY_DPRINTF("reset controller\n");
768: fdctrl_reset_irq(fdctrl);
769: /* Initialise controller */
1.1.1.4 root 770: fdctrl->sra = 0;
771: fdctrl->srb = 0xc0;
772: if (!fdctrl->drives[1].bs)
773: fdctrl->sra |= FD_SRA_nDRV2;
1.1 root 774: fdctrl->cur_drv = 0;
1.1.1.4 root 775: fdctrl->dor = FD_DOR_nRESET;
776: fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0;
777: fdctrl->msr = FD_MSR_RQM;
1.1 root 778: /* FIFO state */
779: fdctrl->data_pos = 0;
780: fdctrl->data_len = 0;
1.1.1.4 root 781: fdctrl->data_state = 0;
1.1 root 782: fdctrl->data_dir = FD_DIR_WRITE;
783: for (i = 0; i < MAX_FD; i++)
1.1.1.4 root 784: fd_recalibrate(&fdctrl->drives[i]);
1.1 root 785: fdctrl_reset_fifo(fdctrl);
1.1.1.4 root 786: if (do_irq) {
787: fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
788: fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
789: }
1.1 root 790: }
791:
1.1.1.10! root 792: static inline FDrive *drv0(FDCtrl *fdctrl)
1.1 root 793: {
1.1.1.4 root 794: return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
1.1 root 795: }
796:
1.1.1.10! root 797: static inline FDrive *drv1(FDCtrl *fdctrl)
1.1 root 798: {
1.1.1.4 root 799: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
800: return &fdctrl->drives[1];
801: else
802: return &fdctrl->drives[0];
803: }
804:
805: #if MAX_FD == 4
1.1.1.10! root 806: static inline FDrive *drv2(FDCtrl *fdctrl)
1.1.1.4 root 807: {
808: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
809: return &fdctrl->drives[2];
810: else
811: return &fdctrl->drives[1];
812: }
813:
1.1.1.10! root 814: static inline FDrive *drv3(FDCtrl *fdctrl)
1.1.1.4 root 815: {
816: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
817: return &fdctrl->drives[3];
818: else
819: return &fdctrl->drives[2];
1.1 root 820: }
1.1.1.4 root 821: #endif
1.1 root 822:
1.1.1.10! root 823: static FDrive *get_cur_drv(FDCtrl *fdctrl)
1.1 root 824: {
1.1.1.4 root 825: switch (fdctrl->cur_drv) {
826: case 0: return drv0(fdctrl);
827: case 1: return drv1(fdctrl);
828: #if MAX_FD == 4
829: case 2: return drv2(fdctrl);
830: case 3: return drv3(fdctrl);
831: #endif
832: default: return NULL;
833: }
834: }
835:
836: /* Status A register : 0x00 (read-only) */
1.1.1.10! root 837: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl)
1.1.1.4 root 838: {
839: uint32_t retval = fdctrl->sra;
840:
841: FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
842:
843: return retval;
1.1 root 844: }
845:
846: /* Status B register : 0x01 (read-only) */
1.1.1.10! root 847: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl)
1.1 root 848: {
1.1.1.4 root 849: uint32_t retval = fdctrl->srb;
850:
851: FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
852:
853: return retval;
1.1 root 854: }
855:
856: /* Digital output register : 0x02 */
1.1.1.10! root 857: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl)
1.1 root 858: {
1.1.1.4 root 859: uint32_t retval = fdctrl->dor;
1.1 root 860:
861: /* Selected drive */
862: retval |= fdctrl->cur_drv;
863: FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
864:
865: return retval;
866: }
867:
1.1.1.10! root 868: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value)
1.1 root 869: {
870: FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
1.1.1.4 root 871:
872: /* Motors */
873: if (value & FD_DOR_MOTEN0)
874: fdctrl->srb |= FD_SRB_MTR0;
1.1 root 875: else
1.1.1.4 root 876: fdctrl->srb &= ~FD_SRB_MTR0;
877: if (value & FD_DOR_MOTEN1)
878: fdctrl->srb |= FD_SRB_MTR1;
1.1 root 879: else
1.1.1.4 root 880: fdctrl->srb &= ~FD_SRB_MTR1;
881:
882: /* Drive */
883: if (value & 1)
884: fdctrl->srb |= FD_SRB_DR0;
885: else
886: fdctrl->srb &= ~FD_SRB_DR0;
887:
1.1 root 888: /* Reset */
1.1.1.4 root 889: if (!(value & FD_DOR_nRESET)) {
890: if (fdctrl->dor & FD_DOR_nRESET) {
1.1 root 891: FLOPPY_DPRINTF("controller enter RESET state\n");
892: }
893: } else {
1.1.1.4 root 894: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 895: FLOPPY_DPRINTF("controller out of RESET state\n");
896: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 897: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1.1 root 898: }
899: }
900: /* Selected drive */
1.1.1.4 root 901: fdctrl->cur_drv = value & FD_DOR_SELMASK;
902:
903: fdctrl->dor = value;
1.1 root 904: }
905:
906: /* Tape drive register : 0x03 */
1.1.1.10! root 907: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl)
1.1 root 908: {
1.1.1.4 root 909: uint32_t retval = fdctrl->tdr;
1.1 root 910:
911: FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
912:
913: return retval;
914: }
915:
1.1.1.10! root 916: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value)
1.1 root 917: {
918: /* Reset mode */
1.1.1.4 root 919: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 920: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
921: return;
922: }
923: FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
924: /* Disk boot selection indicator */
1.1.1.4 root 925: fdctrl->tdr = value & FD_TDR_BOOTSEL;
1.1 root 926: /* Tape indicators: never allow */
927: }
928:
929: /* Main status register : 0x04 (read) */
1.1.1.10! root 930: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl)
1.1 root 931: {
1.1.1.4 root 932: uint32_t retval = fdctrl->msr;
933:
934: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
935: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 936:
1.1.1.7 root 937: /* Sparc mutation */
938: if (fdctrl->sun4m) {
939: retval |= FD_MSR_DIO;
940: fdctrl_reset_irq(fdctrl);
941: };
942:
1.1 root 943: FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
944:
945: return retval;
946: }
947:
948: /* Data select rate register : 0x04 (write) */
1.1.1.10! root 949: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
1.1 root 950: {
951: /* Reset mode */
1.1.1.4 root 952: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1.1.3 root 953: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
954: return;
955: }
1.1 root 956: FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
957: /* Reset: autoclear */
1.1.1.4 root 958: if (value & FD_DSR_SWRESET) {
959: fdctrl->dor &= ~FD_DOR_nRESET;
1.1 root 960: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 961: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 962: }
1.1.1.4 root 963: if (value & FD_DSR_PWRDOWN) {
1.1 root 964: fdctrl_reset(fdctrl, 1);
965: }
1.1.1.4 root 966: fdctrl->dsr = value;
1.1 root 967: }
968:
1.1.1.10! root 969: static int fdctrl_media_changed(FDrive *drv)
1.1.1.2 root 970: {
971: int ret;
1.1.1.3 root 972:
973: if (!drv->bs)
1.1.1.2 root 974: return 0;
975: ret = bdrv_media_changed(drv->bs);
976: if (ret) {
977: fd_revalidate(drv);
978: }
979: return ret;
980: }
981:
1.1 root 982: /* Digital input register : 0x07 (read-only) */
1.1.1.10! root 983: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
1.1 root 984: {
985: uint32_t retval = 0;
986:
1.1.1.4 root 987: if (fdctrl_media_changed(drv0(fdctrl))
988: || fdctrl_media_changed(drv1(fdctrl))
989: #if MAX_FD == 4
990: || fdctrl_media_changed(drv2(fdctrl))
991: || fdctrl_media_changed(drv3(fdctrl))
992: #endif
993: )
994: retval |= FD_DIR_DSKCHG;
1.1.1.10! root 995: if (retval != 0) {
1.1 root 996: FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1.1.1.10! root 997: }
1.1 root 998:
999: return retval;
1000: }
1001:
1002: /* FIFO state control */
1.1.1.10! root 1003: static void fdctrl_reset_fifo(FDCtrl *fdctrl)
1.1 root 1004: {
1005: fdctrl->data_dir = FD_DIR_WRITE;
1006: fdctrl->data_pos = 0;
1.1.1.4 root 1007: fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1.1 root 1008: }
1009:
1010: /* Set FIFO status for the host to read */
1.1.1.10! root 1011: static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len, int do_irq)
1.1 root 1012: {
1013: fdctrl->data_dir = FD_DIR_READ;
1014: fdctrl->data_len = fifo_len;
1015: fdctrl->data_pos = 0;
1.1.1.4 root 1016: fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1.1 root 1017: if (do_irq)
1018: fdctrl_raise_irq(fdctrl, 0x00);
1019: }
1020:
1021: /* Set an error: unimplemented/unknown command */
1.1.1.10! root 1022: static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction)
1.1 root 1023: {
1.1.1.4 root 1024: FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1025: fdctrl->fifo[0] = FD_SR0_INVCMD;
1.1 root 1026: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1027: }
1028:
1029: /* Seek to next sector */
1.1.1.10! root 1030: static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv)
1.1.1.4 root 1031: {
1032: FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1033: cur_drv->head, cur_drv->track, cur_drv->sect,
1034: fd_sector(cur_drv));
1035: /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1036: error in fact */
1037: if (cur_drv->sect >= cur_drv->last_sect ||
1038: cur_drv->sect == fdctrl->eot) {
1039: cur_drv->sect = 1;
1040: if (FD_MULTI_TRACK(fdctrl->data_state)) {
1041: if (cur_drv->head == 0 &&
1042: (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1043: cur_drv->head = 1;
1044: } else {
1045: cur_drv->head = 0;
1046: cur_drv->track++;
1047: if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1048: return 0;
1049: }
1050: } else {
1051: cur_drv->track++;
1052: return 0;
1053: }
1054: FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1055: cur_drv->head, cur_drv->track,
1056: cur_drv->sect, fd_sector(cur_drv));
1057: } else {
1058: cur_drv->sect++;
1059: }
1060: return 1;
1.1 root 1061: }
1062:
1063: /* Callback for transfer end (stop or abort) */
1.1.1.10! root 1064: static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0,
! 1065: uint8_t status1, uint8_t status2)
1.1 root 1066: {
1.1.1.10! root 1067: FDrive *cur_drv;
1.1 root 1068:
1069: cur_drv = get_cur_drv(fdctrl);
1070: FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1071: status0, status1, status2,
1.1.1.4 root 1072: status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1073: fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1.1 root 1074: fdctrl->fifo[1] = status1;
1075: fdctrl->fifo[2] = status2;
1076: fdctrl->fifo[3] = cur_drv->track;
1077: fdctrl->fifo[4] = cur_drv->head;
1078: fdctrl->fifo[5] = cur_drv->sect;
1079: fdctrl->fifo[6] = FD_SECTOR_SC;
1080: fdctrl->data_dir = FD_DIR_READ;
1.1.1.4 root 1081: if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1.1 root 1082: DMA_release_DREQ(fdctrl->dma_chann);
1083: }
1.1.1.4 root 1084: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1085: fdctrl->msr &= ~FD_MSR_NONDMA;
1.1 root 1086: fdctrl_set_fifo(fdctrl, 7, 1);
1087: }
1088:
1089: /* Prepare a data transfer (either DMA or FIFO) */
1.1.1.10! root 1090: static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
1.1 root 1091: {
1.1.1.10! root 1092: FDrive *cur_drv;
1.1 root 1093: uint8_t kh, kt, ks;
1.1.1.4 root 1094: int did_seek = 0;
1.1 root 1095:
1.1.1.4 root 1096: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1097: cur_drv = get_cur_drv(fdctrl);
1098: kt = fdctrl->fifo[2];
1099: kh = fdctrl->fifo[3];
1100: ks = fdctrl->fifo[4];
1101: FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1102: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.10! root 1103: fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
1.1.1.4 root 1104: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1105: case 2:
1106: /* sect too big */
1.1.1.4 root 1107: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1108: fdctrl->fifo[3] = kt;
1109: fdctrl->fifo[4] = kh;
1110: fdctrl->fifo[5] = ks;
1111: return;
1112: case 3:
1113: /* track too big */
1.1.1.4 root 1114: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1115: fdctrl->fifo[3] = kt;
1116: fdctrl->fifo[4] = kh;
1117: fdctrl->fifo[5] = ks;
1118: return;
1119: case 4:
1120: /* No seek enabled */
1.1.1.4 root 1121: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1122: fdctrl->fifo[3] = kt;
1123: fdctrl->fifo[4] = kh;
1124: fdctrl->fifo[5] = ks;
1125: return;
1126: case 1:
1127: did_seek = 1;
1128: break;
1129: default:
1130: break;
1131: }
1.1.1.4 root 1132:
1.1 root 1133: /* Set the FIFO state */
1134: fdctrl->data_dir = direction;
1135: fdctrl->data_pos = 0;
1.1.1.4 root 1136: fdctrl->msr |= FD_MSR_CMDBUSY;
1.1 root 1137: if (fdctrl->fifo[0] & 0x80)
1138: fdctrl->data_state |= FD_STATE_MULTI;
1139: else
1140: fdctrl->data_state &= ~FD_STATE_MULTI;
1141: if (did_seek)
1142: fdctrl->data_state |= FD_STATE_SEEK;
1143: else
1144: fdctrl->data_state &= ~FD_STATE_SEEK;
1145: if (fdctrl->fifo[5] == 00) {
1146: fdctrl->data_len = fdctrl->fifo[8];
1147: } else {
1.1.1.3 root 1148: int tmp;
1.1.1.2 root 1149: fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1.1.1.4 root 1150: tmp = (fdctrl->fifo[6] - ks + 1);
1.1 root 1151: if (fdctrl->fifo[0] & 0x80)
1.1.1.4 root 1152: tmp += fdctrl->fifo[6];
1.1.1.3 root 1153: fdctrl->data_len *= tmp;
1.1 root 1154: }
1155: fdctrl->eot = fdctrl->fifo[6];
1.1.1.4 root 1156: if (fdctrl->dor & FD_DOR_DMAEN) {
1.1 root 1157: int dma_mode;
1158: /* DMA transfer are enabled. Check if DMA channel is well programmed */
1159: dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1160: dma_mode = (dma_mode >> 2) & 3;
1161: FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1.1.1.3 root 1162: dma_mode, direction,
1.1 root 1163: (128 << fdctrl->fifo[5]) *
1.1.1.3 root 1164: (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1.1 root 1165: if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1166: direction == FD_DIR_SCANH) && dma_mode == 0) ||
1167: (direction == FD_DIR_WRITE && dma_mode == 2) ||
1168: (direction == FD_DIR_READ && dma_mode == 1)) {
1169: /* No access is allowed until DMA transfer has completed */
1.1.1.4 root 1170: fdctrl->msr &= ~FD_MSR_RQM;
1.1 root 1171: /* Now, we just have to wait for the DMA controller to
1172: * recall us...
1173: */
1174: DMA_hold_DREQ(fdctrl->dma_chann);
1175: DMA_schedule(fdctrl->dma_chann);
1176: return;
1177: } else {
1.1.1.3 root 1178: FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1.1 root 1179: }
1180: }
1181: FLOPPY_DPRINTF("start non-DMA transfer\n");
1.1.1.4 root 1182: fdctrl->msr |= FD_MSR_NONDMA;
1183: if (direction != FD_DIR_WRITE)
1184: fdctrl->msr |= FD_MSR_DIO;
1.1 root 1185: /* IO based transfer: calculate len */
1186: fdctrl_raise_irq(fdctrl, 0x00);
1187:
1188: return;
1189: }
1190:
1191: /* Prepare a transfer of deleted data */
1.1.1.10! root 1192: static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
1.1 root 1193: {
1.1.1.4 root 1194: FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1195:
1.1 root 1196: /* We don't handle deleted data,
1197: * so we don't return *ANYTHING*
1198: */
1.1.1.4 root 1199: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1200: }
1201:
1202: /* handlers for DMA transfers */
1203: static int fdctrl_transfer_handler (void *opaque, int nchan,
1204: int dma_pos, int dma_len)
1205: {
1.1.1.10! root 1206: FDCtrl *fdctrl;
! 1207: FDrive *cur_drv;
1.1 root 1208: int len, start_pos, rel_pos;
1209: uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1210:
1211: fdctrl = opaque;
1.1.1.4 root 1212: if (fdctrl->msr & FD_MSR_RQM) {
1.1 root 1213: FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1214: return 0;
1215: }
1216: cur_drv = get_cur_drv(fdctrl);
1217: if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1218: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1219: status2 = FD_SR2_SNS;
1.1 root 1220: if (dma_len > fdctrl->data_len)
1221: dma_len = fdctrl->data_len;
1222: if (cur_drv->bs == NULL) {
1.1.1.3 root 1223: if (fdctrl->data_dir == FD_DIR_WRITE)
1.1.1.4 root 1224: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1225: else
1.1.1.4 root 1226: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1.1.3 root 1227: len = 0;
1.1 root 1228: goto transfer_error;
1229: }
1230: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1231: for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1232: len = dma_len - fdctrl->data_pos;
1233: if (len + rel_pos > FD_SECTOR_LEN)
1234: len = FD_SECTOR_LEN - rel_pos;
1235: FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1236: "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1.1.1.4 root 1237: fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1.1 root 1238: cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1.1.1.4 root 1239: fd_sector(cur_drv) * FD_SECTOR_LEN);
1.1 root 1240: if (fdctrl->data_dir != FD_DIR_WRITE ||
1.1.1.3 root 1241: len < FD_SECTOR_LEN || rel_pos != 0) {
1.1 root 1242: /* READ & SCAN commands and realign to a sector for WRITE */
1243: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1244: fdctrl->fifo, 1) < 0) {
1.1 root 1245: FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1246: fd_sector(cur_drv));
1247: /* Sure, image size is too small... */
1248: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1249: }
1250: }
1.1.1.3 root 1251: switch (fdctrl->data_dir) {
1252: case FD_DIR_READ:
1253: /* READ commands */
1.1 root 1254: DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1255: fdctrl->data_pos, len);
1.1.1.3 root 1256: break;
1257: case FD_DIR_WRITE:
1.1 root 1258: /* WRITE commands */
1259: DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1260: fdctrl->data_pos, len);
1261: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1262: fdctrl->fifo, 1) < 0) {
1.1.1.4 root 1263: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1264: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1265: goto transfer_error;
1266: }
1.1.1.3 root 1267: break;
1268: default:
1269: /* SCAN commands */
1.1 root 1270: {
1.1.1.3 root 1271: uint8_t tmpbuf[FD_SECTOR_LEN];
1.1 root 1272: int ret;
1273: DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1274: ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1275: if (ret == 0) {
1.1.1.4 root 1276: status2 = FD_SR2_SEH;
1.1 root 1277: goto end_transfer;
1278: }
1279: if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1280: (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1281: status2 = 0x00;
1282: goto end_transfer;
1283: }
1284: }
1.1.1.3 root 1285: break;
1.1 root 1286: }
1.1.1.3 root 1287: fdctrl->data_pos += len;
1288: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1.1 root 1289: if (rel_pos == 0) {
1290: /* Seek to next sector */
1.1.1.4 root 1291: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1292: break;
1.1 root 1293: }
1294: }
1.1.1.3 root 1295: end_transfer:
1.1 root 1296: len = fdctrl->data_pos - start_pos;
1297: FLOPPY_DPRINTF("end transfer %d %d %d\n",
1.1.1.3 root 1298: fdctrl->data_pos, len, fdctrl->data_len);
1.1 root 1299: if (fdctrl->data_dir == FD_DIR_SCANE ||
1300: fdctrl->data_dir == FD_DIR_SCANL ||
1301: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1302: status2 = FD_SR2_SEH;
1.1 root 1303: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1304: status0 |= FD_SR0_SEEK;
1.1 root 1305: fdctrl->data_len -= len;
1306: fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1.1.1.3 root 1307: transfer_error:
1.1 root 1308:
1309: return len;
1310: }
1311:
1312: /* Data register : 0x05 */
1.1.1.10! root 1313: static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
1.1 root 1314: {
1.1.1.10! root 1315: FDrive *cur_drv;
1.1 root 1316: uint32_t retval = 0;
1.1.1.4 root 1317: int pos;
1.1 root 1318:
1319: cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1320: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1321: if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1322: FLOPPY_ERROR("controller not ready for reading\n");
1.1 root 1323: return 0;
1324: }
1325: pos = fdctrl->data_pos;
1.1.1.4 root 1326: if (fdctrl->msr & FD_MSR_NONDMA) {
1.1 root 1327: pos %= FD_SECTOR_LEN;
1328: if (pos == 0) {
1.1.1.4 root 1329: if (fdctrl->data_pos != 0)
1330: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1331: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1332: fd_sector(cur_drv));
1333: return 0;
1334: }
1335: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1336: FLOPPY_DPRINTF("error getting sector %d\n",
1337: fd_sector(cur_drv));
1338: /* Sure, image size is too small... */
1339: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1340: }
1.1 root 1341: }
1342: }
1343: retval = fdctrl->fifo[pos];
1344: if (++fdctrl->data_pos == fdctrl->data_len) {
1345: fdctrl->data_pos = 0;
1346: /* Switch from transfer mode to status mode
1347: * then from status mode to command mode
1348: */
1.1.1.4 root 1349: if (fdctrl->msr & FD_MSR_NONDMA) {
1350: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1351: } else {
1352: fdctrl_reset_fifo(fdctrl);
1353: fdctrl_reset_irq(fdctrl);
1354: }
1355: }
1356: FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1357:
1358: return retval;
1359: }
1360:
1.1.1.10! root 1361: static void fdctrl_format_sector(FDCtrl *fdctrl)
1.1 root 1362: {
1.1.1.10! root 1363: FDrive *cur_drv;
1.1 root 1364: uint8_t kh, kt, ks;
1365:
1.1.1.4 root 1366: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1367: cur_drv = get_cur_drv(fdctrl);
1368: kt = fdctrl->fifo[6];
1369: kh = fdctrl->fifo[7];
1370: ks = fdctrl->fifo[8];
1371: FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1372: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.10! root 1373: fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
1.1.1.4 root 1374: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1375: case 2:
1376: /* sect too big */
1.1.1.4 root 1377: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1378: fdctrl->fifo[3] = kt;
1379: fdctrl->fifo[4] = kh;
1380: fdctrl->fifo[5] = ks;
1381: return;
1382: case 3:
1383: /* track too big */
1.1.1.4 root 1384: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1385: fdctrl->fifo[3] = kt;
1386: fdctrl->fifo[4] = kh;
1387: fdctrl->fifo[5] = ks;
1388: return;
1389: case 4:
1390: /* No seek enabled */
1.1.1.4 root 1391: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1392: fdctrl->fifo[3] = kt;
1393: fdctrl->fifo[4] = kh;
1394: fdctrl->fifo[5] = ks;
1395: return;
1396: case 1:
1397: fdctrl->data_state |= FD_STATE_SEEK;
1398: break;
1399: default:
1400: break;
1401: }
1402: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1403: if (cur_drv->bs == NULL ||
1404: bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1.1.1.3 root 1405: FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1.1.1.4 root 1406: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1407: } else {
1.1.1.3 root 1408: if (cur_drv->sect == cur_drv->last_sect) {
1409: fdctrl->data_state &= ~FD_STATE_FORMAT;
1410: /* Last sector done */
1411: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1412: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1413: else
1414: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1415: } else {
1416: /* More to do */
1417: fdctrl->data_pos = 0;
1418: fdctrl->data_len = 4;
1419: }
1.1 root 1420: }
1421: }
1422:
1.1.1.10! root 1423: static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
1.1 root 1424: {
1.1.1.4 root 1425: fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1426: fdctrl->fifo[0] = fdctrl->lock << 4;
1427: fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
1428: }
1.1 root 1429:
1.1.1.10! root 1430: static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1431: {
1.1.1.10! root 1432: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1433:
1434: /* Drives position */
1435: fdctrl->fifo[0] = drv0(fdctrl)->track;
1436: fdctrl->fifo[1] = drv1(fdctrl)->track;
1437: #if MAX_FD == 4
1438: fdctrl->fifo[2] = drv2(fdctrl)->track;
1439: fdctrl->fifo[3] = drv3(fdctrl)->track;
1.1 root 1440: #else
1.1.1.4 root 1441: fdctrl->fifo[2] = 0;
1442: fdctrl->fifo[3] = 0;
1.1 root 1443: #endif
1.1.1.4 root 1444: /* timers */
1445: fdctrl->fifo[4] = fdctrl->timer0;
1446: fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1447: fdctrl->fifo[6] = cur_drv->last_sect;
1448: fdctrl->fifo[7] = (fdctrl->lock << 7) |
1449: (cur_drv->perpendicular << 2);
1450: fdctrl->fifo[8] = fdctrl->config;
1451: fdctrl->fifo[9] = fdctrl->precomp_trk;
1452: fdctrl_set_fifo(fdctrl, 10, 0);
1453: }
1454:
1.1.1.10! root 1455: static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1456: {
1457: /* Controller's version */
1458: fdctrl->fifo[0] = fdctrl->version;
1459: fdctrl_set_fifo(fdctrl, 1, 1);
1460: }
1461:
1.1.1.10! root 1462: static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1463: {
1464: fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1465: fdctrl_set_fifo(fdctrl, 1, 0);
1466: }
1467:
1.1.1.10! root 1468: static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1469: {
1.1.1.10! root 1470: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1471:
1472: /* Drives position */
1473: drv0(fdctrl)->track = fdctrl->fifo[3];
1474: drv1(fdctrl)->track = fdctrl->fifo[4];
1475: #if MAX_FD == 4
1476: drv2(fdctrl)->track = fdctrl->fifo[5];
1477: drv3(fdctrl)->track = fdctrl->fifo[6];
1478: #endif
1479: /* timers */
1480: fdctrl->timer0 = fdctrl->fifo[7];
1481: fdctrl->timer1 = fdctrl->fifo[8];
1482: cur_drv->last_sect = fdctrl->fifo[9];
1483: fdctrl->lock = fdctrl->fifo[10] >> 7;
1484: cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1485: fdctrl->config = fdctrl->fifo[11];
1486: fdctrl->precomp_trk = fdctrl->fifo[12];
1487: fdctrl->pwrd = fdctrl->fifo[13];
1488: fdctrl_reset_fifo(fdctrl);
1489: }
1490:
1.1.1.10! root 1491: static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1492: {
1.1.1.10! root 1493: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1494:
1495: fdctrl->fifo[0] = 0;
1496: fdctrl->fifo[1] = 0;
1497: /* Drives position */
1498: fdctrl->fifo[2] = drv0(fdctrl)->track;
1499: fdctrl->fifo[3] = drv1(fdctrl)->track;
1500: #if MAX_FD == 4
1501: fdctrl->fifo[4] = drv2(fdctrl)->track;
1502: fdctrl->fifo[5] = drv3(fdctrl)->track;
1503: #else
1504: fdctrl->fifo[4] = 0;
1505: fdctrl->fifo[5] = 0;
1506: #endif
1507: /* timers */
1508: fdctrl->fifo[6] = fdctrl->timer0;
1509: fdctrl->fifo[7] = fdctrl->timer1;
1510: fdctrl->fifo[8] = cur_drv->last_sect;
1511: fdctrl->fifo[9] = (fdctrl->lock << 7) |
1512: (cur_drv->perpendicular << 2);
1513: fdctrl->fifo[10] = fdctrl->config;
1514: fdctrl->fifo[11] = fdctrl->precomp_trk;
1515: fdctrl->fifo[12] = fdctrl->pwrd;
1516: fdctrl->fifo[13] = 0;
1517: fdctrl->fifo[14] = 0;
1518: fdctrl_set_fifo(fdctrl, 15, 1);
1519: }
1520:
1.1.1.10! root 1521: static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1522: {
1.1.1.10! root 1523: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1524:
1525: /* XXX: should set main status register to busy */
1526: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1527: qemu_mod_timer(fdctrl->result_timer,
1.1.1.6 root 1528: qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
1.1.1.4 root 1529: }
1530:
1.1.1.10! root 1531: static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1532: {
1.1.1.10! root 1533: FDrive *cur_drv;
1.1.1.4 root 1534:
1535: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1536: cur_drv = get_cur_drv(fdctrl);
1537: fdctrl->data_state |= FD_STATE_FORMAT;
1538: if (fdctrl->fifo[0] & 0x80)
1539: fdctrl->data_state |= FD_STATE_MULTI;
1540: else
1541: fdctrl->data_state &= ~FD_STATE_MULTI;
1542: fdctrl->data_state &= ~FD_STATE_SEEK;
1543: cur_drv->bps =
1544: fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1545: #if 0
1546: cur_drv->last_sect =
1547: cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1548: fdctrl->fifo[3] / 2;
1549: #else
1550: cur_drv->last_sect = fdctrl->fifo[3];
1551: #endif
1552: /* TODO: implement format using DMA expected by the Bochs BIOS
1553: * and Linux fdformat (read 3 bytes per sector via DMA and fill
1554: * the sector with the specified fill byte
1555: */
1556: fdctrl->data_state &= ~FD_STATE_FORMAT;
1557: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1558: }
1559:
1.1.1.10! root 1560: static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1561: {
1562: fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1563: fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1564: if (fdctrl->fifo[2] & 1)
1565: fdctrl->dor &= ~FD_DOR_DMAEN;
1566: else
1567: fdctrl->dor |= FD_DOR_DMAEN;
1568: /* No result back */
1569: fdctrl_reset_fifo(fdctrl);
1570: }
1571:
1.1.1.10! root 1572: static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1573: {
1.1.1.10! root 1574: FDrive *cur_drv;
1.1.1.4 root 1575:
1576: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1577: cur_drv = get_cur_drv(fdctrl);
1578: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1579: /* 1 Byte status back */
1580: fdctrl->fifo[0] = (cur_drv->ro << 6) |
1581: (cur_drv->track == 0 ? 0x10 : 0x00) |
1582: (cur_drv->head << 2) |
1583: GET_CUR_DRV(fdctrl) |
1584: 0x28;
1585: fdctrl_set_fifo(fdctrl, 1, 0);
1586: }
1587:
1.1.1.10! root 1588: static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1589: {
1.1.1.10! root 1590: FDrive *cur_drv;
1.1.1.4 root 1591:
1592: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1593: cur_drv = get_cur_drv(fdctrl);
1594: fd_recalibrate(cur_drv);
1595: fdctrl_reset_fifo(fdctrl);
1596: /* Raise Interrupt */
1597: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1598: }
1599:
1.1.1.10! root 1600: static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1601: {
1.1.1.10! root 1602: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1603:
1604: if(fdctrl->reset_sensei > 0) {
1605: fdctrl->fifo[0] =
1606: FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1607: fdctrl->reset_sensei--;
1608: } else {
1609: /* XXX: status0 handling is broken for read/write
1610: commands, so we do this hack. It should be suppressed
1611: ASAP */
1612: fdctrl->fifo[0] =
1613: FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1614: }
1615:
1616: fdctrl->fifo[1] = cur_drv->track;
1617: fdctrl_set_fifo(fdctrl, 2, 0);
1618: fdctrl_reset_irq(fdctrl);
1619: fdctrl->status0 = FD_SR0_RDYCHG;
1620: }
1621:
1.1.1.10! root 1622: static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1623: {
1.1.1.10! root 1624: FDrive *cur_drv;
1.1.1.4 root 1625:
1626: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1627: cur_drv = get_cur_drv(fdctrl);
1628: fdctrl_reset_fifo(fdctrl);
1629: if (fdctrl->fifo[2] > cur_drv->max_track) {
1630: fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
1631: } else {
1632: cur_drv->track = fdctrl->fifo[2];
1633: /* Raise Interrupt */
1634: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1635: }
1636: }
1637:
1.1.1.10! root 1638: static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1639: {
1.1.1.10! root 1640: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1641:
1642: if (fdctrl->fifo[1] & 0x80)
1643: cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1644: /* No result back */
1645: fdctrl_reset_fifo(fdctrl);
1646: }
1647:
1.1.1.10! root 1648: static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1649: {
1650: fdctrl->config = fdctrl->fifo[2];
1651: fdctrl->precomp_trk = fdctrl->fifo[3];
1652: /* No result back */
1653: fdctrl_reset_fifo(fdctrl);
1654: }
1655:
1.1.1.10! root 1656: static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1657: {
1658: fdctrl->pwrd = fdctrl->fifo[1];
1659: fdctrl->fifo[0] = fdctrl->fifo[1];
1660: fdctrl_set_fifo(fdctrl, 1, 1);
1661: }
1662:
1.1.1.10! root 1663: static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1664: {
1665: /* No result back */
1666: fdctrl_reset_fifo(fdctrl);
1667: }
1668:
1.1.1.10! root 1669: static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1670: {
1.1.1.10! root 1671: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1672:
1673: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
1674: /* Command parameters done */
1675: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1676: fdctrl->fifo[0] = fdctrl->fifo[1];
1677: fdctrl->fifo[2] = 0;
1678: fdctrl->fifo[3] = 0;
1679: fdctrl_set_fifo(fdctrl, 4, 1);
1680: } else {
1681: fdctrl_reset_fifo(fdctrl);
1.1 root 1682: }
1.1.1.4 root 1683: } else if (fdctrl->data_len > 7) {
1684: /* ERROR */
1685: fdctrl->fifo[0] = 0x80 |
1686: (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1687: fdctrl_set_fifo(fdctrl, 1, 1);
1688: }
1689: }
1690:
1.1.1.10! root 1691: static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1692: {
1.1.1.10! root 1693: FDrive *cur_drv;
1.1.1.4 root 1694:
1695: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1696: cur_drv = get_cur_drv(fdctrl);
1697: if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1698: cur_drv->track = cur_drv->max_track - 1;
1699: } else {
1700: cur_drv->track += fdctrl->fifo[2];
1.1 root 1701: }
1.1.1.4 root 1702: fdctrl_reset_fifo(fdctrl);
1703: /* Raise Interrupt */
1704: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1705: }
1706:
1.1.1.10! root 1707: static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1708: {
1.1.1.10! root 1709: FDrive *cur_drv;
1.1.1.4 root 1710:
1711: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1712: cur_drv = get_cur_drv(fdctrl);
1713: if (fdctrl->fifo[2] > cur_drv->track) {
1714: cur_drv->track = 0;
1715: } else {
1716: cur_drv->track -= fdctrl->fifo[2];
1717: }
1718: fdctrl_reset_fifo(fdctrl);
1719: /* Raise Interrupt */
1720: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1721: }
1722:
1723: static const struct {
1724: uint8_t value;
1725: uint8_t mask;
1726: const char* name;
1727: int parameters;
1.1.1.10! root 1728: void (*handler)(FDCtrl *fdctrl, int direction);
1.1.1.4 root 1729: int direction;
1730: } handlers[] = {
1731: { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
1732: { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
1733: { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
1734: { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
1735: { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
1736: { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
1737: { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
1738: { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
1739: { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
1740: { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
1741: { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
1742: { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
1743: { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
1744: { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
1745: { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
1746: { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
1747: { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
1748: { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
1749: { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
1750: { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
1751: { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
1752: { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
1753: { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
1754: { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
1755: { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
1756: { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
1757: { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
1758: { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
1759: { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
1760: { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
1761: { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
1762: { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
1763: };
1764: /* Associate command to an index in the 'handlers' array */
1765: static uint8_t command_to_handler[256];
1766:
1.1.1.10! root 1767: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
1.1.1.4 root 1768: {
1.1.1.10! root 1769: FDrive *cur_drv;
1.1.1.4 root 1770: int pos;
1771:
1772: /* Reset mode */
1773: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1774: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1775: return;
1776: }
1777: if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
1778: FLOPPY_ERROR("controller not ready for writing\n");
1779: return;
1780: }
1781: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1782: /* Is it write command time ? */
1783: if (fdctrl->msr & FD_MSR_NONDMA) {
1784: /* FIFO data write */
1785: pos = fdctrl->data_pos++;
1786: pos %= FD_SECTOR_LEN;
1787: fdctrl->fifo[pos] = value;
1788: if (pos == FD_SECTOR_LEN - 1 ||
1789: fdctrl->data_pos == fdctrl->data_len) {
1790: cur_drv = get_cur_drv(fdctrl);
1791: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1792: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1793: return;
1794: }
1795: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1796: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1797: fd_sector(cur_drv));
1798: return;
1799: }
1800: }
1801: /* Switch from transfer mode to status mode
1802: * then from status mode to command mode
1803: */
1804: if (fdctrl->data_pos == fdctrl->data_len)
1805: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1806: return;
1807: }
1808: if (fdctrl->data_pos == 0) {
1809: /* Command */
1810: pos = command_to_handler[value & 0xff];
1811: FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
1812: fdctrl->data_len = handlers[pos].parameters + 1;
1813: }
1814:
1.1 root 1815: FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1.1.1.4 root 1816: fdctrl->fifo[fdctrl->data_pos++] = value;
1817: if (fdctrl->data_pos == fdctrl->data_len) {
1.1 root 1818: /* We now have all parameters
1819: * and will be able to treat the command
1820: */
1.1.1.3 root 1821: if (fdctrl->data_state & FD_STATE_FORMAT) {
1822: fdctrl_format_sector(fdctrl);
1.1 root 1823: return;
1824: }
1.1.1.4 root 1825:
1826: pos = command_to_handler[fdctrl->fifo[0] & 0xff];
1827: FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
1828: (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
1.1 root 1829: }
1830: }
1831:
1832: static void fdctrl_result_timer(void *opaque)
1833: {
1.1.1.10! root 1834: FDCtrl *fdctrl = opaque;
! 1835: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.3 root 1836:
1837: /* Pretend we are spinning.
1838: * This is needed for Coherent, which uses READ ID to check for
1839: * sector interleaving.
1840: */
1841: if (cur_drv->last_sect != 0) {
1842: cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
1843: }
1.1 root 1844: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1845: }
1.1.1.4 root 1846:
1847: /* Init functions */
1.1.1.10! root 1848: static int fdctrl_connect_drives(FDCtrl *fdctrl)
1.1.1.6 root 1849: {
1850: unsigned int i;
1.1.1.10! root 1851: FDrive *drive;
1.1.1.6 root 1852:
1853: for (i = 0; i < MAX_FD; i++) {
1.1.1.10! root 1854: drive = &fdctrl->drives[i];
! 1855:
! 1856: if (drive->bs) {
! 1857: if (bdrv_get_on_error(drive->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
! 1858: error_report("fdc doesn't support drive option werror");
! 1859: return -1;
! 1860: }
! 1861: if (bdrv_get_on_error(drive->bs, 1) != BLOCK_ERR_REPORT) {
! 1862: error_report("fdc doesn't support drive option rerror");
! 1863: return -1;
! 1864: }
! 1865: }
! 1866:
! 1867: fd_init(drive);
! 1868: fd_revalidate(drive);
! 1869: if (drive->bs) {
! 1870: bdrv_set_removable(drive->bs, 1);
! 1871: }
1.1.1.6 root 1872: }
1.1.1.10! root 1873: return 0;
1.1.1.6 root 1874: }
1875:
1.1.1.10! root 1876: FDCtrl *fdctrl_init_isa(DriveInfo **fds)
1.1.1.6 root 1877: {
1878: ISADevice *dev;
1879:
1880: dev = isa_create("isa-fdc");
1.1.1.8 root 1881: if (fds[0]) {
1.1.1.10! root 1882: qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
1.1.1.8 root 1883: }
1884: if (fds[1]) {
1.1.1.10! root 1885: qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
1.1.1.8 root 1886: }
1.1.1.10! root 1887: qdev_init_nofail(&dev->qdev);
! 1888: return &(DO_UPCAST(FDCtrlISABus, busdev, dev)->state);
1.1.1.6 root 1889: }
1890:
1.1.1.10! root 1891: FDCtrl *fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
! 1892: target_phys_addr_t mmio_base, DriveInfo **fds)
1.1.1.6 root 1893: {
1.1.1.10! root 1894: FDCtrl *fdctrl;
1.1.1.6 root 1895: DeviceState *dev;
1.1.1.10! root 1896: FDCtrlSysBus *sys;
1.1.1.6 root 1897:
1898: dev = qdev_create(NULL, "sysbus-fdc");
1.1.1.10! root 1899: sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
1.1.1.6 root 1900: fdctrl = &sys->state;
1901: fdctrl->dma_chann = dma_chann; /* FIXME */
1.1.1.8 root 1902: if (fds[0]) {
1.1.1.10! root 1903: qdev_prop_set_drive_nofail(dev, "driveA", fds[0]->bdrv);
1.1.1.8 root 1904: }
1905: if (fds[1]) {
1.1.1.10! root 1906: qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv);
1.1.1.8 root 1907: }
1.1.1.6 root 1908: qdev_init_nofail(dev);
1909: sysbus_connect_irq(&sys->busdev, 0, irq);
1910: sysbus_mmio_map(&sys->busdev, 0, mmio_base);
1911:
1912: return fdctrl;
1913: }
1914:
1.1.1.10! root 1915: FDCtrl *sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
! 1916: DriveInfo **fds, qemu_irq *fdc_tc)
1.1.1.6 root 1917: {
1918: DeviceState *dev;
1.1.1.10! root 1919: FDCtrlSysBus *sys;
! 1920: FDCtrl *fdctrl;
1.1.1.6 root 1921:
1922: dev = qdev_create(NULL, "SUNW,fdtwo");
1.1.1.8 root 1923: if (fds[0]) {
1.1.1.10! root 1924: qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv);
1.1.1.8 root 1925: }
1.1.1.6 root 1926: qdev_init_nofail(dev);
1.1.1.10! root 1927: sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
1.1.1.6 root 1928: fdctrl = &sys->state;
1929: sysbus_connect_irq(&sys->busdev, 0, irq);
1930: sysbus_mmio_map(&sys->busdev, 0, io_base);
1931: *fdc_tc = qdev_get_gpio_in(dev, 0);
1932:
1933: return fdctrl;
1934: }
1935:
1.1.1.10! root 1936: static int fdctrl_init_common(FDCtrl *fdctrl)
1.1.1.4 root 1937: {
1938: int i, j;
1.1.1.6 root 1939: static int command_tables_inited = 0;
1.1.1.4 root 1940:
1941: /* Fill 'command_to_handler' lookup table */
1.1.1.6 root 1942: if (!command_tables_inited) {
1943: command_tables_inited = 1;
1944: for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) {
1945: for (j = 0; j < sizeof(command_to_handler); j++) {
1946: if ((j & handlers[i].mask) == handlers[i].value) {
1947: command_to_handler[j] = i;
1948: }
1949: }
1.1.1.4 root 1950: }
1951: }
1952:
1953: FLOPPY_DPRINTF("init controller\n");
1954: fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
1.1.1.6 root 1955: fdctrl->fifo_size = 512;
1.1.1.4 root 1956: fdctrl->result_timer = qemu_new_timer(vm_clock,
1957: fdctrl_result_timer, fdctrl);
1958:
1959: fdctrl->version = 0x90; /* Intel 82078 controller */
1960: fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
1.1.1.6 root 1961: fdctrl->num_floppies = MAX_FD;
1962:
1963: if (fdctrl->dma_chann != -1)
1964: DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl);
1.1.1.10! root 1965: return fdctrl_connect_drives(fdctrl);
1.1.1.4 root 1966: }
1967:
1.1.1.6 root 1968: static int isabus_fdc_init1(ISADevice *dev)
1.1.1.4 root 1969: {
1.1.1.10! root 1970: FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
! 1971: FDCtrl *fdctrl = &isa->state;
1.1.1.6 root 1972: int iobase = 0x3f0;
1973: int isairq = 6;
1974: int dma_chann = 2;
1975: int ret;
1.1.1.4 root 1976:
1.1.1.6 root 1977: register_ioport_read(iobase + 0x01, 5, 1,
1978: &fdctrl_read_port, fdctrl);
1979: register_ioport_read(iobase + 0x07, 1, 1,
1980: &fdctrl_read_port, fdctrl);
1981: register_ioport_write(iobase + 0x01, 5, 1,
1982: &fdctrl_write_port, fdctrl);
1983: register_ioport_write(iobase + 0x07, 1, 1,
1984: &fdctrl_write_port, fdctrl);
1985: isa_init_irq(&isa->busdev, &fdctrl->irq, isairq);
1986: fdctrl->dma_chann = dma_chann;
1.1.1.4 root 1987:
1.1.1.10! root 1988: qdev_set_legacy_instance_id(&dev->qdev, iobase, 2);
! 1989: ret = fdctrl_init_common(fdctrl);
1.1.1.5 root 1990:
1.1.1.6 root 1991: return ret;
1.1.1.4 root 1992: }
1993:
1.1.1.6 root 1994: static int sysbus_fdc_init1(SysBusDevice *dev)
1.1.1.4 root 1995: {
1.1.1.10! root 1996: FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
! 1997: FDCtrl *fdctrl = &sys->state;
1.1.1.6 root 1998: int io;
1999: int ret;
1.1.1.4 root 2000:
1.1.1.6 root 2001: io = cpu_register_io_memory(fdctrl_mem_read, fdctrl_mem_write, fdctrl);
2002: sysbus_init_mmio(dev, 0x08, io);
2003: sysbus_init_irq(dev, &fdctrl->irq);
2004: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2005: fdctrl->dma_chann = -1;
1.1.1.5 root 2006:
1.1.1.10! root 2007: qdev_set_legacy_instance_id(&dev->qdev, io, 2);
! 2008: ret = fdctrl_init_common(fdctrl);
1.1.1.4 root 2009:
1.1.1.6 root 2010: return ret;
1.1.1.4 root 2011: }
1.1.1.5 root 2012:
1.1.1.6 root 2013: static int sun4m_fdc_init1(SysBusDevice *dev)
1.1.1.5 root 2014: {
1.1.1.10! root 2015: FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
1.1.1.5 root 2016: int io;
2017:
1.1.1.6 root 2018: io = cpu_register_io_memory(fdctrl_mem_read_strict,
2019: fdctrl_mem_write_strict, fdctrl);
1.1.1.5 root 2020: sysbus_init_mmio(dev, 0x08, io);
1.1.1.6 root 2021: sysbus_init_irq(dev, &fdctrl->irq);
2022: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2023:
2024: fdctrl->sun4m = 1;
1.1.1.10! root 2025: qdev_set_legacy_instance_id(&dev->qdev, io, 2);
! 2026: return fdctrl_init_common(fdctrl);
1.1.1.5 root 2027: }
2028:
1.1.1.10! root 2029: static const VMStateDescription vmstate_isa_fdc ={
! 2030: .name = "fdc",
! 2031: .version_id = 2,
! 2032: .minimum_version_id = 2,
! 2033: .fields = (VMStateField []) {
! 2034: VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl),
! 2035: VMSTATE_END_OF_LIST()
! 2036: }
! 2037: };
! 2038:
1.1.1.6 root 2039: static ISADeviceInfo isa_fdc_info = {
2040: .init = isabus_fdc_init1,
2041: .qdev.name = "isa-fdc",
1.1.1.10! root 2042: .qdev.size = sizeof(FDCtrlISABus),
1.1.1.6 root 2043: .qdev.no_user = 1,
1.1.1.10! root 2044: .qdev.vmsd = &vmstate_isa_fdc,
1.1.1.6 root 2045: .qdev.reset = fdctrl_external_reset_isa,
2046: .qdev.props = (Property[]) {
1.1.1.10! root 2047: DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs),
! 2048: DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
1.1.1.6 root 2049: DEFINE_PROP_END_OF_LIST(),
2050: },
2051: };
1.1.1.5 root 2052:
1.1.1.10! root 2053: static const VMStateDescription vmstate_sysbus_fdc ={
! 2054: .name = "fdc",
! 2055: .version_id = 2,
! 2056: .minimum_version_id = 2,
! 2057: .fields = (VMStateField []) {
! 2058: VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
! 2059: VMSTATE_END_OF_LIST()
! 2060: }
! 2061: };
! 2062:
1.1.1.6 root 2063: static SysBusDeviceInfo sysbus_fdc_info = {
2064: .init = sysbus_fdc_init1,
2065: .qdev.name = "sysbus-fdc",
1.1.1.10! root 2066: .qdev.size = sizeof(FDCtrlSysBus),
! 2067: .qdev.vmsd = &vmstate_sysbus_fdc,
1.1.1.6 root 2068: .qdev.reset = fdctrl_external_reset_sysbus,
1.1.1.5 root 2069: .qdev.props = (Property[]) {
1.1.1.10! root 2070: DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs),
! 2071: DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs),
1.1.1.6 root 2072: DEFINE_PROP_END_OF_LIST(),
2073: },
2074: };
2075:
2076: static SysBusDeviceInfo sun4m_fdc_info = {
2077: .init = sun4m_fdc_init1,
2078: .qdev.name = "SUNW,fdtwo",
1.1.1.10! root 2079: .qdev.size = sizeof(FDCtrlSysBus),
! 2080: .qdev.vmsd = &vmstate_sysbus_fdc,
1.1.1.6 root 2081: .qdev.reset = fdctrl_external_reset_sysbus,
2082: .qdev.props = (Property[]) {
1.1.1.10! root 2083: DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs),
1.1.1.6 root 2084: DEFINE_PROP_END_OF_LIST(),
2085: },
1.1.1.5 root 2086: };
2087:
2088: static void fdc_register_devices(void)
2089: {
1.1.1.6 root 2090: isa_qdev_register(&isa_fdc_info);
2091: sysbus_register_withprop(&sysbus_fdc_info);
2092: sysbus_register_withprop(&sun4m_fdc_info);
1.1.1.5 root 2093: }
2094:
2095: device_init(fdc_register_devices)
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