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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"
1.1.1.11! root 37: #include "blockdev.h"
! 38: #include "sysemu.h"
1.1 root 39:
40: /********************************************************/
41: /* debug Floppy devices */
42: //#define DEBUG_FLOPPY
43:
44: #ifdef DEBUG_FLOPPY
1.1.1.5 root 45: #define FLOPPY_DPRINTF(fmt, ...) \
46: do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
1.1 root 47: #else
1.1.1.5 root 48: #define FLOPPY_DPRINTF(fmt, ...)
1.1 root 49: #endif
50:
1.1.1.5 root 51: #define FLOPPY_ERROR(fmt, ...) \
52: do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
1.1 root 53:
54: /********************************************************/
55: /* Floppy drive emulation */
56:
1.1.1.4 root 57: #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
58: #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
59:
1.1 root 60: /* Will always be a fixed parameter for us */
1.1.1.4 root 61: #define FD_SECTOR_LEN 512
62: #define FD_SECTOR_SC 2 /* Sector size code */
63: #define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
1.1 root 64:
65: /* Floppy disk drive emulation */
1.1.1.10 root 66: typedef enum FDiskType {
1.1 root 67: FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
68: FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
69: FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
70: FDRIVE_DISK_USER = 0x04, /* User defined geometry */
71: FDRIVE_DISK_NONE = 0x05, /* No disk */
1.1.1.10 root 72: } FDiskType;
1.1 root 73:
1.1.1.10 root 74: typedef enum FDriveType {
1.1 root 75: FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
76: FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
77: FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
78: FDRIVE_DRV_NONE = 0x03, /* No drive connected */
1.1.1.10 root 79: } FDriveType;
1.1 root 80:
1.1.1.10 root 81: typedef enum FDiskFlags {
1.1 root 82: FDISK_DBL_SIDES = 0x01,
1.1.1.10 root 83: } FDiskFlags;
1.1 root 84:
1.1.1.10 root 85: typedef struct FDrive {
1.1 root 86: BlockDriverState *bs;
87: /* Drive status */
1.1.1.10 root 88: FDriveType drive;
1.1 root 89: uint8_t perpendicular; /* 2.88 MB access mode */
90: /* Position */
91: uint8_t head;
92: uint8_t track;
93: uint8_t sect;
94: /* Media */
1.1.1.10 root 95: FDiskFlags flags;
1.1 root 96: uint8_t last_sect; /* Nb sector per track */
97: uint8_t max_track; /* Nb of tracks */
98: uint16_t bps; /* Bytes per sector */
99: uint8_t ro; /* Is read-only */
1.1.1.10 root 100: } FDrive;
1.1 root 101:
1.1.1.10 root 102: static void fd_init(FDrive *drv)
1.1 root 103: {
104: /* Drive */
105: drv->drive = FDRIVE_DRV_NONE;
106: drv->perpendicular = 0;
107: /* Disk */
108: drv->last_sect = 0;
109: drv->max_track = 0;
110: }
111:
1.1.1.10 root 112: static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
113: uint8_t last_sect)
1.1 root 114: {
115: return (((track * 2) + head) * last_sect) + sect - 1;
116: }
117:
118: /* Returns current position, in sectors, for given drive */
1.1.1.10 root 119: static int fd_sector(FDrive *drv)
1.1 root 120: {
1.1.1.10 root 121: return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect);
1.1 root 122: }
123:
1.1.1.4 root 124: /* Seek to a new position:
125: * returns 0 if already on right track
126: * returns 1 if track changed
127: * returns 2 if track is invalid
128: * returns 3 if sector is invalid
129: * returns 4 if seek is disabled
130: */
1.1.1.10 root 131: static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
132: int enable_seek)
1.1 root 133: {
134: uint32_t sector;
135: int ret;
136:
137: if (track > drv->max_track ||
1.1.1.3 root 138: (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
1.1 root 139: FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
140: head, track, sect, 1,
141: (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
142: drv->max_track, drv->last_sect);
143: return 2;
144: }
145: if (sect > drv->last_sect) {
146: FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
147: head, track, sect, 1,
148: (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
149: drv->max_track, drv->last_sect);
150: return 3;
151: }
1.1.1.10 root 152: sector = fd_sector_calc(head, track, sect, drv->last_sect);
1.1 root 153: ret = 0;
154: if (sector != fd_sector(drv)) {
155: #if 0
156: if (!enable_seek) {
157: FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
158: head, track, sect, 1, drv->max_track, drv->last_sect);
159: return 4;
160: }
161: #endif
162: drv->head = head;
1.1.1.3 root 163: if (drv->track != track)
164: ret = 1;
1.1 root 165: drv->track = track;
166: drv->sect = sect;
167: }
168:
169: return ret;
170: }
171:
172: /* Set drive back to track 0 */
1.1.1.10 root 173: static void fd_recalibrate(FDrive *drv)
1.1 root 174: {
175: FLOPPY_DPRINTF("recalibrate\n");
176: drv->head = 0;
177: drv->track = 0;
178: drv->sect = 1;
179: }
180:
181: /* Recognize floppy formats */
1.1.1.10 root 182: typedef struct FDFormat {
183: FDriveType drive;
184: FDiskType disk;
1.1 root 185: uint8_t last_sect;
186: uint8_t max_track;
187: uint8_t max_head;
1.1.1.3 root 188: const char *str;
1.1.1.10 root 189: } FDFormat;
1.1 root 190:
1.1.1.10 root 191: static const FDFormat fd_formats[] = {
1.1 root 192: /* First entry is default format */
193: /* 1.44 MB 3"1/2 floppy disks */
194: { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
195: { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
196: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
197: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
198: { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
199: { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
200: { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
201: { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
202: /* 2.88 MB 3"1/2 floppy disks */
203: { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
204: { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
205: { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
206: { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
207: { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
208: /* 720 kB 3"1/2 floppy disks */
209: { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
210: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
211: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
212: { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
213: { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
214: { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
215: /* 1.2 MB 5"1/4 floppy disks */
216: { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
217: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
218: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
219: { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
220: { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
221: /* 720 kB 5"1/4 floppy disks */
222: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
223: { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
224: /* 360 kB 5"1/4 floppy disks */
225: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
226: { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
227: { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
228: { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
1.1.1.3 root 229: /* 320 kB 5"1/4 floppy disks */
1.1 root 230: { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
231: { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
232: /* 360 kB must match 5"1/4 better than 3"1/2... */
233: { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
234: /* end */
235: { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
236: };
237:
238: /* Revalidate a disk drive after a disk change */
1.1.1.10 root 239: static void fd_revalidate(FDrive *drv)
1.1 root 240: {
1.1.1.10 root 241: const FDFormat *parse;
1.1.1.3 root 242: uint64_t nb_sectors, size;
1.1 root 243: int i, first_match, match;
244: int nb_heads, max_track, last_sect, ro;
245:
246: FLOPPY_DPRINTF("revalidate\n");
247: if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
1.1.1.3 root 248: ro = bdrv_is_read_only(drv->bs);
249: bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
250: if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
251: FLOPPY_DPRINTF("User defined disk (%d %d %d)",
1.1 root 252: nb_heads - 1, max_track, last_sect);
1.1.1.3 root 253: } else {
254: bdrv_get_geometry(drv->bs, &nb_sectors);
255: match = -1;
256: first_match = -1;
257: for (i = 0;; i++) {
258: parse = &fd_formats[i];
259: if (parse->drive == FDRIVE_DRV_NONE)
260: break;
261: if (drv->drive == parse->drive ||
262: drv->drive == FDRIVE_DRV_NONE) {
263: size = (parse->max_head + 1) * parse->max_track *
264: parse->last_sect;
265: if (nb_sectors == size) {
266: match = i;
267: break;
268: }
269: if (first_match == -1)
270: first_match = i;
271: }
272: }
273: if (match == -1) {
274: if (first_match == -1)
275: match = 1;
276: else
277: match = first_match;
278: parse = &fd_formats[match];
279: }
280: nb_heads = parse->max_head + 1;
281: max_track = parse->max_track;
282: last_sect = parse->last_sect;
283: drv->drive = parse->drive;
284: FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
1.1 root 285: nb_heads, max_track, last_sect, ro ? "ro" : "rw");
1.1.1.3 root 286: }
287: if (nb_heads == 1) {
288: drv->flags &= ~FDISK_DBL_SIDES;
289: } else {
290: drv->flags |= FDISK_DBL_SIDES;
291: }
292: drv->max_track = max_track;
293: drv->last_sect = last_sect;
294: drv->ro = ro;
1.1 root 295: } else {
1.1.1.3 root 296: FLOPPY_DPRINTF("No disk in drive\n");
1.1 root 297: drv->last_sect = 0;
1.1.1.3 root 298: drv->max_track = 0;
299: drv->flags &= ~FDISK_DBL_SIDES;
1.1 root 300: }
301: }
302:
303: /********************************************************/
304: /* Intel 82078 floppy disk controller emulation */
305:
1.1.1.10 root 306: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
307: static void fdctrl_reset_fifo(FDCtrl *fdctrl);
1.1 root 308: static int fdctrl_transfer_handler (void *opaque, int nchan,
309: int dma_pos, int dma_len);
1.1.1.10 root 310: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0);
1.1 root 311:
1.1.1.10 root 312: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
313: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
314: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl);
315: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value);
316: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl);
317: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value);
318: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl);
319: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
320: static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
321: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
322: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
1.1 root 323:
324: enum {
325: FD_DIR_WRITE = 0,
326: FD_DIR_READ = 1,
327: FD_DIR_SCANE = 2,
328: FD_DIR_SCANL = 3,
329: FD_DIR_SCANH = 4,
330: };
331:
332: enum {
1.1.1.4 root 333: FD_STATE_MULTI = 0x01, /* multi track flag */
334: FD_STATE_FORMAT = 0x02, /* format flag */
335: FD_STATE_SEEK = 0x04, /* seek flag */
336: };
337:
338: enum {
339: FD_REG_SRA = 0x00,
340: FD_REG_SRB = 0x01,
341: FD_REG_DOR = 0x02,
342: FD_REG_TDR = 0x03,
343: FD_REG_MSR = 0x04,
344: FD_REG_DSR = 0x04,
345: FD_REG_FIFO = 0x05,
346: FD_REG_DIR = 0x07,
347: };
348:
349: enum {
350: FD_CMD_READ_TRACK = 0x02,
351: FD_CMD_SPECIFY = 0x03,
352: FD_CMD_SENSE_DRIVE_STATUS = 0x04,
353: FD_CMD_WRITE = 0x05,
354: FD_CMD_READ = 0x06,
355: FD_CMD_RECALIBRATE = 0x07,
356: FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
357: FD_CMD_WRITE_DELETED = 0x09,
358: FD_CMD_READ_ID = 0x0a,
359: FD_CMD_READ_DELETED = 0x0c,
360: FD_CMD_FORMAT_TRACK = 0x0d,
361: FD_CMD_DUMPREG = 0x0e,
362: FD_CMD_SEEK = 0x0f,
363: FD_CMD_VERSION = 0x10,
364: FD_CMD_SCAN_EQUAL = 0x11,
365: FD_CMD_PERPENDICULAR_MODE = 0x12,
366: FD_CMD_CONFIGURE = 0x13,
367: FD_CMD_LOCK = 0x14,
368: FD_CMD_VERIFY = 0x16,
369: FD_CMD_POWERDOWN_MODE = 0x17,
370: FD_CMD_PART_ID = 0x18,
371: FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
372: FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
1.1.1.9 root 373: FD_CMD_SAVE = 0x2e,
1.1.1.4 root 374: FD_CMD_OPTION = 0x33,
1.1.1.9 root 375: FD_CMD_RESTORE = 0x4e,
1.1.1.4 root 376: FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
377: FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
378: FD_CMD_FORMAT_AND_WRITE = 0xcd,
379: FD_CMD_RELATIVE_SEEK_IN = 0xcf,
380: };
381:
382: enum {
383: FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
384: FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
385: FD_CONFIG_POLL = 0x10, /* Poll enabled */
386: FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
387: FD_CONFIG_EIS = 0x40, /* No implied seeks */
388: };
389:
390: enum {
391: FD_SR0_EQPMT = 0x10,
392: FD_SR0_SEEK = 0x20,
393: FD_SR0_ABNTERM = 0x40,
394: FD_SR0_INVCMD = 0x80,
395: FD_SR0_RDYCHG = 0xc0,
396: };
397:
398: enum {
399: FD_SR1_EC = 0x80, /* End of cylinder */
400: };
401:
402: enum {
403: FD_SR2_SNS = 0x04, /* Scan not satisfied */
404: FD_SR2_SEH = 0x08, /* Scan equal hit */
405: };
406:
407: enum {
408: FD_SRA_DIR = 0x01,
409: FD_SRA_nWP = 0x02,
410: FD_SRA_nINDX = 0x04,
411: FD_SRA_HDSEL = 0x08,
412: FD_SRA_nTRK0 = 0x10,
413: FD_SRA_STEP = 0x20,
414: FD_SRA_nDRV2 = 0x40,
415: FD_SRA_INTPEND = 0x80,
416: };
417:
418: enum {
419: FD_SRB_MTR0 = 0x01,
420: FD_SRB_MTR1 = 0x02,
421: FD_SRB_WGATE = 0x04,
422: FD_SRB_RDATA = 0x08,
423: FD_SRB_WDATA = 0x10,
424: FD_SRB_DR0 = 0x20,
425: };
426:
427: enum {
428: #if MAX_FD == 4
429: FD_DOR_SELMASK = 0x03,
430: #else
431: FD_DOR_SELMASK = 0x01,
432: #endif
433: FD_DOR_nRESET = 0x04,
434: FD_DOR_DMAEN = 0x08,
435: FD_DOR_MOTEN0 = 0x10,
436: FD_DOR_MOTEN1 = 0x20,
437: FD_DOR_MOTEN2 = 0x40,
438: FD_DOR_MOTEN3 = 0x80,
439: };
440:
441: enum {
442: #if MAX_FD == 4
443: FD_TDR_BOOTSEL = 0x0c,
444: #else
445: FD_TDR_BOOTSEL = 0x04,
446: #endif
447: };
448:
449: enum {
450: FD_DSR_DRATEMASK= 0x03,
451: FD_DSR_PWRDOWN = 0x40,
452: FD_DSR_SWRESET = 0x80,
453: };
454:
455: enum {
456: FD_MSR_DRV0BUSY = 0x01,
457: FD_MSR_DRV1BUSY = 0x02,
458: FD_MSR_DRV2BUSY = 0x04,
459: FD_MSR_DRV3BUSY = 0x08,
460: FD_MSR_CMDBUSY = 0x10,
461: FD_MSR_NONDMA = 0x20,
462: FD_MSR_DIO = 0x40,
463: FD_MSR_RQM = 0x80,
464: };
465:
466: enum {
467: FD_DIR_DSKCHG = 0x80,
1.1 root 468: };
469:
470: #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
471: #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
472: #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
473:
1.1.1.10 root 474: struct FDCtrl {
1.1 root 475: /* Controller's identification */
476: uint8_t version;
477: /* HW */
1.1.1.3 root 478: qemu_irq irq;
1.1 root 479: int dma_chann;
480: /* Controller state */
481: QEMUTimer *result_timer;
1.1.1.4 root 482: uint8_t sra;
483: uint8_t srb;
484: uint8_t dor;
1.1.1.6 root 485: uint8_t dor_vmstate; /* only used as temp during vmstate */
1.1.1.4 root 486: uint8_t tdr;
487: uint8_t dsr;
488: uint8_t msr;
1.1 root 489: uint8_t cur_drv;
1.1.1.4 root 490: uint8_t status0;
491: uint8_t status1;
492: uint8_t status2;
1.1 root 493: /* Command FIFO */
1.1.1.3 root 494: uint8_t *fifo;
1.1.1.6 root 495: int32_t fifo_size;
1.1 root 496: uint32_t data_pos;
497: uint32_t data_len;
498: uint8_t data_state;
499: uint8_t data_dir;
500: uint8_t eot; /* last wanted sector */
501: /* States kept only to be returned back */
502: /* Timers state */
503: uint8_t timer0;
504: uint8_t timer1;
505: /* precompensation */
506: uint8_t precomp_trk;
507: uint8_t config;
508: uint8_t lock;
509: /* Power down config (also with status regB access mode */
510: uint8_t pwrd;
1.1.1.3 root 511: /* Sun4m quirks? */
512: int sun4m;
1.1 root 513: /* Floppy drives */
1.1.1.6 root 514: uint8_t num_floppies;
1.1.1.10 root 515: FDrive drives[MAX_FD];
1.1.1.4 root 516: int reset_sensei;
1.1 root 517: };
518:
1.1.1.10 root 519: typedef struct FDCtrlSysBus {
1.1.1.6 root 520: SysBusDevice busdev;
1.1.1.10 root 521: struct FDCtrl state;
522: } FDCtrlSysBus;
1.1.1.6 root 523:
1.1.1.10 root 524: typedef struct FDCtrlISABus {
1.1.1.6 root 525: ISADevice busdev;
1.1.1.10 root 526: struct FDCtrl state;
1.1.1.11! root 527: int32_t bootindexA;
! 528: int32_t bootindexB;
1.1.1.10 root 529: } FDCtrlISABus;
1.1.1.6 root 530:
1.1 root 531: static uint32_t fdctrl_read (void *opaque, uint32_t reg)
532: {
1.1.1.10 root 533: FDCtrl *fdctrl = opaque;
1.1 root 534: uint32_t retval;
535:
1.1.1.4 root 536: switch (reg) {
537: case FD_REG_SRA:
538: retval = fdctrl_read_statusA(fdctrl);
1.1.1.3 root 539: break;
1.1.1.4 root 540: case FD_REG_SRB:
1.1.1.3 root 541: retval = fdctrl_read_statusB(fdctrl);
542: break;
1.1.1.4 root 543: case FD_REG_DOR:
1.1.1.3 root 544: retval = fdctrl_read_dor(fdctrl);
545: break;
1.1.1.4 root 546: case FD_REG_TDR:
1.1 root 547: retval = fdctrl_read_tape(fdctrl);
1.1.1.3 root 548: break;
1.1.1.4 root 549: case FD_REG_MSR:
1.1 root 550: retval = fdctrl_read_main_status(fdctrl);
1.1.1.3 root 551: break;
1.1.1.4 root 552: case FD_REG_FIFO:
1.1 root 553: retval = fdctrl_read_data(fdctrl);
1.1.1.3 root 554: break;
1.1.1.4 root 555: case FD_REG_DIR:
1.1 root 556: retval = fdctrl_read_dir(fdctrl);
1.1.1.3 root 557: break;
1.1 root 558: default:
1.1.1.3 root 559: retval = (uint32_t)(-1);
560: break;
1.1 root 561: }
562: FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
563:
564: return retval;
565: }
566:
567: static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
568: {
1.1.1.10 root 569: FDCtrl *fdctrl = opaque;
1.1 root 570:
571: FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
572:
1.1.1.4 root 573: switch (reg) {
574: case FD_REG_DOR:
1.1.1.3 root 575: fdctrl_write_dor(fdctrl, value);
576: break;
1.1.1.4 root 577: case FD_REG_TDR:
1.1 root 578: fdctrl_write_tape(fdctrl, value);
1.1.1.3 root 579: break;
1.1.1.4 root 580: case FD_REG_DSR:
1.1 root 581: fdctrl_write_rate(fdctrl, value);
1.1.1.3 root 582: break;
1.1.1.4 root 583: case FD_REG_FIFO:
1.1 root 584: fdctrl_write_data(fdctrl, value);
1.1.1.3 root 585: break;
1.1 root 586: default:
1.1.1.3 root 587: break;
1.1 root 588: }
589: }
590:
1.1.1.4 root 591: static uint32_t fdctrl_read_port (void *opaque, uint32_t reg)
592: {
593: return fdctrl_read(opaque, reg & 7);
594: }
595:
596: static void fdctrl_write_port (void *opaque, uint32_t reg, uint32_t value)
597: {
598: fdctrl_write(opaque, reg & 7, value);
599: }
600:
1.1 root 601: static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg)
602: {
1.1.1.3 root 603: return fdctrl_read(opaque, (uint32_t)reg);
1.1 root 604: }
605:
1.1.1.3 root 606: static void fdctrl_write_mem (void *opaque,
1.1 root 607: target_phys_addr_t reg, uint32_t value)
608: {
1.1.1.3 root 609: fdctrl_write(opaque, (uint32_t)reg, value);
1.1 root 610: }
611:
1.1.1.6 root 612: static CPUReadMemoryFunc * const fdctrl_mem_read[3] = {
1.1 root 613: fdctrl_read_mem,
614: fdctrl_read_mem,
615: fdctrl_read_mem,
616: };
617:
1.1.1.6 root 618: static CPUWriteMemoryFunc * const fdctrl_mem_write[3] = {
1.1 root 619: fdctrl_write_mem,
620: fdctrl_write_mem,
621: fdctrl_write_mem,
622: };
623:
1.1.1.6 root 624: static CPUReadMemoryFunc * const fdctrl_mem_read_strict[3] = {
1.1.1.3 root 625: fdctrl_read_mem,
626: NULL,
627: NULL,
628: };
629:
1.1.1.6 root 630: static CPUWriteMemoryFunc * const fdctrl_mem_write_strict[3] = {
1.1.1.3 root 631: fdctrl_write_mem,
632: NULL,
633: NULL,
634: };
635:
1.1.1.6 root 636: static const VMStateDescription vmstate_fdrive = {
637: .name = "fdrive",
638: .version_id = 1,
639: .minimum_version_id = 1,
640: .minimum_version_id_old = 1,
641: .fields = (VMStateField []) {
1.1.1.10 root 642: VMSTATE_UINT8(head, FDrive),
643: VMSTATE_UINT8(track, FDrive),
644: VMSTATE_UINT8(sect, FDrive),
1.1.1.6 root 645: VMSTATE_END_OF_LIST()
646: }
647: };
1.1.1.3 root 648:
1.1.1.6 root 649: static void fdc_pre_save(void *opaque)
1.1.1.3 root 650: {
1.1.1.10 root 651: FDCtrl *s = opaque;
1.1.1.4 root 652:
1.1.1.6 root 653: s->dor_vmstate = s->dor | GET_CUR_DRV(s);
1.1.1.3 root 654: }
655:
1.1.1.6 root 656: static int fdc_post_load(void *opaque, int version_id)
1.1.1.3 root 657: {
1.1.1.10 root 658: FDCtrl *s = opaque;
1.1.1.3 root 659:
1.1.1.6 root 660: SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK);
661: s->dor = s->dor_vmstate & ~FD_DOR_SELMASK;
1.1.1.3 root 662: return 0;
663: }
664:
1.1.1.6 root 665: static const VMStateDescription vmstate_fdc = {
666: .name = "fdc",
667: .version_id = 2,
668: .minimum_version_id = 2,
669: .minimum_version_id_old = 2,
670: .pre_save = fdc_pre_save,
671: .post_load = fdc_post_load,
672: .fields = (VMStateField []) {
673: /* Controller State */
1.1.1.10 root 674: VMSTATE_UINT8(sra, FDCtrl),
675: VMSTATE_UINT8(srb, FDCtrl),
676: VMSTATE_UINT8(dor_vmstate, FDCtrl),
677: VMSTATE_UINT8(tdr, FDCtrl),
678: VMSTATE_UINT8(dsr, FDCtrl),
679: VMSTATE_UINT8(msr, FDCtrl),
680: VMSTATE_UINT8(status0, FDCtrl),
681: VMSTATE_UINT8(status1, FDCtrl),
682: VMSTATE_UINT8(status2, FDCtrl),
1.1.1.6 root 683: /* Command FIFO */
1.1.1.10 root 684: VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8,
685: uint8_t),
686: VMSTATE_UINT32(data_pos, FDCtrl),
687: VMSTATE_UINT32(data_len, FDCtrl),
688: VMSTATE_UINT8(data_state, FDCtrl),
689: VMSTATE_UINT8(data_dir, FDCtrl),
690: VMSTATE_UINT8(eot, FDCtrl),
1.1.1.6 root 691: /* States kept only to be returned back */
1.1.1.10 root 692: VMSTATE_UINT8(timer0, FDCtrl),
693: VMSTATE_UINT8(timer1, FDCtrl),
694: VMSTATE_UINT8(precomp_trk, FDCtrl),
695: VMSTATE_UINT8(config, FDCtrl),
696: VMSTATE_UINT8(lock, FDCtrl),
697: VMSTATE_UINT8(pwrd, FDCtrl),
698: VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl),
699: VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1,
700: vmstate_fdrive, FDrive),
1.1.1.6 root 701: VMSTATE_END_OF_LIST()
1.1.1.4 root 702: }
1.1.1.6 root 703: };
1.1.1.3 root 704:
1.1.1.6 root 705: static void fdctrl_external_reset_sysbus(DeviceState *d)
706: {
1.1.1.10 root 707: FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
708: FDCtrl *s = &sys->state;
1.1.1.6 root 709:
710: fdctrl_reset(s, 0);
1.1.1.3 root 711: }
712:
1.1.1.6 root 713: static void fdctrl_external_reset_isa(DeviceState *d)
1.1.1.3 root 714: {
1.1.1.10 root 715: FDCtrlISABus *isa = container_of(d, FDCtrlISABus, busdev.qdev);
716: FDCtrl *s = &isa->state;
1.1.1.3 root 717:
718: fdctrl_reset(s, 0);
719: }
720:
1.1.1.4 root 721: static void fdctrl_handle_tc(void *opaque, int irq, int level)
1.1.1.3 root 722: {
1.1.1.10 root 723: //FDCtrl *s = opaque;
1.1.1.3 root 724:
1.1.1.4 root 725: if (level) {
726: // XXX
727: FLOPPY_DPRINTF("TC pulsed\n");
1.1 root 728: }
1.1.1.3 root 729: }
730:
1.1 root 731: /* XXX: may change if moved to bdrv */
1.1.1.10 root 732: int fdctrl_get_drive_type(FDCtrl *fdctrl, int drive_num)
1.1 root 733: {
734: return fdctrl->drives[drive_num].drive;
735: }
736:
737: /* Change IRQ state */
1.1.1.10 root 738: static void fdctrl_reset_irq(FDCtrl *fdctrl)
1.1 root 739: {
1.1.1.4 root 740: if (!(fdctrl->sra & FD_SRA_INTPEND))
741: return;
1.1 root 742: FLOPPY_DPRINTF("Reset interrupt\n");
1.1.1.3 root 743: qemu_set_irq(fdctrl->irq, 0);
1.1.1.4 root 744: fdctrl->sra &= ~FD_SRA_INTPEND;
1.1 root 745: }
746:
1.1.1.10 root 747: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0)
1.1 root 748: {
1.1.1.4 root 749: /* Sparc mutation */
750: if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) {
751: /* XXX: not sure */
752: fdctrl->msr &= ~FD_MSR_CMDBUSY;
753: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
754: fdctrl->status0 = status0;
1.1.1.3 root 755: return;
1.1 root 756: }
1.1.1.4 root 757: if (!(fdctrl->sra & FD_SRA_INTPEND)) {
1.1.1.3 root 758: qemu_set_irq(fdctrl->irq, 1);
1.1.1.4 root 759: fdctrl->sra |= FD_SRA_INTPEND;
1.1 root 760: }
1.1.1.4 root 761: fdctrl->reset_sensei = 0;
762: fdctrl->status0 = status0;
763: FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
1.1 root 764: }
765:
766: /* Reset controller */
1.1.1.10 root 767: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
1.1 root 768: {
769: int i;
770:
771: FLOPPY_DPRINTF("reset controller\n");
772: fdctrl_reset_irq(fdctrl);
773: /* Initialise controller */
1.1.1.4 root 774: fdctrl->sra = 0;
775: fdctrl->srb = 0xc0;
776: if (!fdctrl->drives[1].bs)
777: fdctrl->sra |= FD_SRA_nDRV2;
1.1 root 778: fdctrl->cur_drv = 0;
1.1.1.4 root 779: fdctrl->dor = FD_DOR_nRESET;
780: fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0;
781: fdctrl->msr = FD_MSR_RQM;
1.1 root 782: /* FIFO state */
783: fdctrl->data_pos = 0;
784: fdctrl->data_len = 0;
1.1.1.4 root 785: fdctrl->data_state = 0;
1.1 root 786: fdctrl->data_dir = FD_DIR_WRITE;
787: for (i = 0; i < MAX_FD; i++)
1.1.1.4 root 788: fd_recalibrate(&fdctrl->drives[i]);
1.1 root 789: fdctrl_reset_fifo(fdctrl);
1.1.1.4 root 790: if (do_irq) {
791: fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
792: fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
793: }
1.1 root 794: }
795:
1.1.1.10 root 796: static inline FDrive *drv0(FDCtrl *fdctrl)
1.1 root 797: {
1.1.1.4 root 798: return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
1.1 root 799: }
800:
1.1.1.10 root 801: static inline FDrive *drv1(FDCtrl *fdctrl)
1.1 root 802: {
1.1.1.4 root 803: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
804: return &fdctrl->drives[1];
805: else
806: return &fdctrl->drives[0];
807: }
808:
809: #if MAX_FD == 4
1.1.1.10 root 810: static inline FDrive *drv2(FDCtrl *fdctrl)
1.1.1.4 root 811: {
812: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
813: return &fdctrl->drives[2];
814: else
815: return &fdctrl->drives[1];
816: }
817:
1.1.1.10 root 818: static inline FDrive *drv3(FDCtrl *fdctrl)
1.1.1.4 root 819: {
820: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
821: return &fdctrl->drives[3];
822: else
823: return &fdctrl->drives[2];
1.1 root 824: }
1.1.1.4 root 825: #endif
1.1 root 826:
1.1.1.10 root 827: static FDrive *get_cur_drv(FDCtrl *fdctrl)
1.1 root 828: {
1.1.1.4 root 829: switch (fdctrl->cur_drv) {
830: case 0: return drv0(fdctrl);
831: case 1: return drv1(fdctrl);
832: #if MAX_FD == 4
833: case 2: return drv2(fdctrl);
834: case 3: return drv3(fdctrl);
835: #endif
836: default: return NULL;
837: }
838: }
839:
840: /* Status A register : 0x00 (read-only) */
1.1.1.10 root 841: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl)
1.1.1.4 root 842: {
843: uint32_t retval = fdctrl->sra;
844:
845: FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
846:
847: return retval;
1.1 root 848: }
849:
850: /* Status B register : 0x01 (read-only) */
1.1.1.10 root 851: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl)
1.1 root 852: {
1.1.1.4 root 853: uint32_t retval = fdctrl->srb;
854:
855: FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
856:
857: return retval;
1.1 root 858: }
859:
860: /* Digital output register : 0x02 */
1.1.1.10 root 861: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl)
1.1 root 862: {
1.1.1.4 root 863: uint32_t retval = fdctrl->dor;
1.1 root 864:
865: /* Selected drive */
866: retval |= fdctrl->cur_drv;
867: FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
868:
869: return retval;
870: }
871:
1.1.1.10 root 872: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value)
1.1 root 873: {
874: FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
1.1.1.4 root 875:
876: /* Motors */
877: if (value & FD_DOR_MOTEN0)
878: fdctrl->srb |= FD_SRB_MTR0;
1.1 root 879: else
1.1.1.4 root 880: fdctrl->srb &= ~FD_SRB_MTR0;
881: if (value & FD_DOR_MOTEN1)
882: fdctrl->srb |= FD_SRB_MTR1;
1.1 root 883: else
1.1.1.4 root 884: fdctrl->srb &= ~FD_SRB_MTR1;
885:
886: /* Drive */
887: if (value & 1)
888: fdctrl->srb |= FD_SRB_DR0;
889: else
890: fdctrl->srb &= ~FD_SRB_DR0;
891:
1.1 root 892: /* Reset */
1.1.1.4 root 893: if (!(value & FD_DOR_nRESET)) {
894: if (fdctrl->dor & FD_DOR_nRESET) {
1.1 root 895: FLOPPY_DPRINTF("controller enter RESET state\n");
896: }
897: } else {
1.1.1.4 root 898: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 899: FLOPPY_DPRINTF("controller out of RESET state\n");
900: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 901: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1.1 root 902: }
903: }
904: /* Selected drive */
1.1.1.4 root 905: fdctrl->cur_drv = value & FD_DOR_SELMASK;
906:
907: fdctrl->dor = value;
1.1 root 908: }
909:
910: /* Tape drive register : 0x03 */
1.1.1.10 root 911: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl)
1.1 root 912: {
1.1.1.4 root 913: uint32_t retval = fdctrl->tdr;
1.1 root 914:
915: FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
916:
917: return retval;
918: }
919:
1.1.1.10 root 920: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value)
1.1 root 921: {
922: /* Reset mode */
1.1.1.4 root 923: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 924: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
925: return;
926: }
927: FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
928: /* Disk boot selection indicator */
1.1.1.4 root 929: fdctrl->tdr = value & FD_TDR_BOOTSEL;
1.1 root 930: /* Tape indicators: never allow */
931: }
932:
933: /* Main status register : 0x04 (read) */
1.1.1.10 root 934: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl)
1.1 root 935: {
1.1.1.4 root 936: uint32_t retval = fdctrl->msr;
937:
938: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
939: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 940:
1.1.1.7 root 941: /* Sparc mutation */
942: if (fdctrl->sun4m) {
943: retval |= FD_MSR_DIO;
944: fdctrl_reset_irq(fdctrl);
945: };
946:
1.1 root 947: FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
948:
949: return retval;
950: }
951:
952: /* Data select rate register : 0x04 (write) */
1.1.1.10 root 953: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
1.1 root 954: {
955: /* Reset mode */
1.1.1.4 root 956: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1.1.3 root 957: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
958: return;
959: }
1.1 root 960: FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
961: /* Reset: autoclear */
1.1.1.4 root 962: if (value & FD_DSR_SWRESET) {
963: fdctrl->dor &= ~FD_DOR_nRESET;
1.1 root 964: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 965: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 966: }
1.1.1.4 root 967: if (value & FD_DSR_PWRDOWN) {
1.1 root 968: fdctrl_reset(fdctrl, 1);
969: }
1.1.1.4 root 970: fdctrl->dsr = value;
1.1 root 971: }
972:
1.1.1.10 root 973: static int fdctrl_media_changed(FDrive *drv)
1.1.1.2 root 974: {
975: int ret;
1.1.1.3 root 976:
977: if (!drv->bs)
1.1.1.2 root 978: return 0;
979: ret = bdrv_media_changed(drv->bs);
980: if (ret) {
981: fd_revalidate(drv);
982: }
983: return ret;
984: }
985:
1.1 root 986: /* Digital input register : 0x07 (read-only) */
1.1.1.10 root 987: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
1.1 root 988: {
989: uint32_t retval = 0;
990:
1.1.1.4 root 991: if (fdctrl_media_changed(drv0(fdctrl))
992: || fdctrl_media_changed(drv1(fdctrl))
993: #if MAX_FD == 4
994: || fdctrl_media_changed(drv2(fdctrl))
995: || fdctrl_media_changed(drv3(fdctrl))
996: #endif
997: )
998: retval |= FD_DIR_DSKCHG;
1.1.1.10 root 999: if (retval != 0) {
1.1 root 1000: FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1.1.1.10 root 1001: }
1.1 root 1002:
1003: return retval;
1004: }
1005:
1006: /* FIFO state control */
1.1.1.10 root 1007: static void fdctrl_reset_fifo(FDCtrl *fdctrl)
1.1 root 1008: {
1009: fdctrl->data_dir = FD_DIR_WRITE;
1010: fdctrl->data_pos = 0;
1.1.1.4 root 1011: fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1.1 root 1012: }
1013:
1014: /* Set FIFO status for the host to read */
1.1.1.10 root 1015: static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len, int do_irq)
1.1 root 1016: {
1017: fdctrl->data_dir = FD_DIR_READ;
1018: fdctrl->data_len = fifo_len;
1019: fdctrl->data_pos = 0;
1.1.1.4 root 1020: fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1.1 root 1021: if (do_irq)
1022: fdctrl_raise_irq(fdctrl, 0x00);
1023: }
1024:
1025: /* Set an error: unimplemented/unknown command */
1.1.1.10 root 1026: static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction)
1.1 root 1027: {
1.1.1.4 root 1028: FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
1029: fdctrl->fifo[0] = FD_SR0_INVCMD;
1.1 root 1030: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1031: }
1032:
1033: /* Seek to next sector */
1.1.1.10 root 1034: static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv)
1.1.1.4 root 1035: {
1036: FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1037: cur_drv->head, cur_drv->track, cur_drv->sect,
1038: fd_sector(cur_drv));
1039: /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1040: error in fact */
1041: if (cur_drv->sect >= cur_drv->last_sect ||
1042: cur_drv->sect == fdctrl->eot) {
1043: cur_drv->sect = 1;
1044: if (FD_MULTI_TRACK(fdctrl->data_state)) {
1045: if (cur_drv->head == 0 &&
1046: (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1047: cur_drv->head = 1;
1048: } else {
1049: cur_drv->head = 0;
1050: cur_drv->track++;
1051: if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1052: return 0;
1053: }
1054: } else {
1055: cur_drv->track++;
1056: return 0;
1057: }
1058: FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1059: cur_drv->head, cur_drv->track,
1060: cur_drv->sect, fd_sector(cur_drv));
1061: } else {
1062: cur_drv->sect++;
1063: }
1064: return 1;
1.1 root 1065: }
1066:
1067: /* Callback for transfer end (stop or abort) */
1.1.1.10 root 1068: static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0,
1069: uint8_t status1, uint8_t status2)
1.1 root 1070: {
1.1.1.10 root 1071: FDrive *cur_drv;
1.1 root 1072:
1073: cur_drv = get_cur_drv(fdctrl);
1074: FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1075: status0, status1, status2,
1.1.1.4 root 1076: status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1077: fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1.1 root 1078: fdctrl->fifo[1] = status1;
1079: fdctrl->fifo[2] = status2;
1080: fdctrl->fifo[3] = cur_drv->track;
1081: fdctrl->fifo[4] = cur_drv->head;
1082: fdctrl->fifo[5] = cur_drv->sect;
1083: fdctrl->fifo[6] = FD_SECTOR_SC;
1084: fdctrl->data_dir = FD_DIR_READ;
1.1.1.4 root 1085: if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1.1 root 1086: DMA_release_DREQ(fdctrl->dma_chann);
1087: }
1.1.1.4 root 1088: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1089: fdctrl->msr &= ~FD_MSR_NONDMA;
1.1 root 1090: fdctrl_set_fifo(fdctrl, 7, 1);
1091: }
1092:
1093: /* Prepare a data transfer (either DMA or FIFO) */
1.1.1.10 root 1094: static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
1.1 root 1095: {
1.1.1.10 root 1096: FDrive *cur_drv;
1.1 root 1097: uint8_t kh, kt, ks;
1.1.1.4 root 1098: int did_seek = 0;
1.1 root 1099:
1.1.1.4 root 1100: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1101: cur_drv = get_cur_drv(fdctrl);
1102: kt = fdctrl->fifo[2];
1103: kh = fdctrl->fifo[3];
1104: ks = fdctrl->fifo[4];
1105: FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1106: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.10 root 1107: fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
1.1.1.4 root 1108: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1109: case 2:
1110: /* sect too big */
1.1.1.4 root 1111: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1112: fdctrl->fifo[3] = kt;
1113: fdctrl->fifo[4] = kh;
1114: fdctrl->fifo[5] = ks;
1115: return;
1116: case 3:
1117: /* track too big */
1.1.1.4 root 1118: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1119: fdctrl->fifo[3] = kt;
1120: fdctrl->fifo[4] = kh;
1121: fdctrl->fifo[5] = ks;
1122: return;
1123: case 4:
1124: /* No seek enabled */
1.1.1.4 root 1125: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1126: fdctrl->fifo[3] = kt;
1127: fdctrl->fifo[4] = kh;
1128: fdctrl->fifo[5] = ks;
1129: return;
1130: case 1:
1131: did_seek = 1;
1132: break;
1133: default:
1134: break;
1135: }
1.1.1.4 root 1136:
1.1 root 1137: /* Set the FIFO state */
1138: fdctrl->data_dir = direction;
1139: fdctrl->data_pos = 0;
1.1.1.4 root 1140: fdctrl->msr |= FD_MSR_CMDBUSY;
1.1 root 1141: if (fdctrl->fifo[0] & 0x80)
1142: fdctrl->data_state |= FD_STATE_MULTI;
1143: else
1144: fdctrl->data_state &= ~FD_STATE_MULTI;
1145: if (did_seek)
1146: fdctrl->data_state |= FD_STATE_SEEK;
1147: else
1148: fdctrl->data_state &= ~FD_STATE_SEEK;
1149: if (fdctrl->fifo[5] == 00) {
1150: fdctrl->data_len = fdctrl->fifo[8];
1151: } else {
1.1.1.3 root 1152: int tmp;
1.1.1.2 root 1153: fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1.1.1.4 root 1154: tmp = (fdctrl->fifo[6] - ks + 1);
1.1 root 1155: if (fdctrl->fifo[0] & 0x80)
1.1.1.4 root 1156: tmp += fdctrl->fifo[6];
1.1.1.3 root 1157: fdctrl->data_len *= tmp;
1.1 root 1158: }
1159: fdctrl->eot = fdctrl->fifo[6];
1.1.1.4 root 1160: if (fdctrl->dor & FD_DOR_DMAEN) {
1.1 root 1161: int dma_mode;
1162: /* DMA transfer are enabled. Check if DMA channel is well programmed */
1163: dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1164: dma_mode = (dma_mode >> 2) & 3;
1165: FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1.1.1.3 root 1166: dma_mode, direction,
1.1 root 1167: (128 << fdctrl->fifo[5]) *
1.1.1.3 root 1168: (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1.1 root 1169: if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1170: direction == FD_DIR_SCANH) && dma_mode == 0) ||
1171: (direction == FD_DIR_WRITE && dma_mode == 2) ||
1172: (direction == FD_DIR_READ && dma_mode == 1)) {
1173: /* No access is allowed until DMA transfer has completed */
1.1.1.4 root 1174: fdctrl->msr &= ~FD_MSR_RQM;
1.1 root 1175: /* Now, we just have to wait for the DMA controller to
1176: * recall us...
1177: */
1178: DMA_hold_DREQ(fdctrl->dma_chann);
1179: DMA_schedule(fdctrl->dma_chann);
1180: return;
1181: } else {
1.1.1.3 root 1182: FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1.1 root 1183: }
1184: }
1185: FLOPPY_DPRINTF("start non-DMA transfer\n");
1.1.1.4 root 1186: fdctrl->msr |= FD_MSR_NONDMA;
1187: if (direction != FD_DIR_WRITE)
1188: fdctrl->msr |= FD_MSR_DIO;
1.1 root 1189: /* IO based transfer: calculate len */
1190: fdctrl_raise_irq(fdctrl, 0x00);
1191:
1192: return;
1193: }
1194:
1195: /* Prepare a transfer of deleted data */
1.1.1.10 root 1196: static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
1.1 root 1197: {
1.1.1.4 root 1198: FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1199:
1.1 root 1200: /* We don't handle deleted data,
1201: * so we don't return *ANYTHING*
1202: */
1.1.1.4 root 1203: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1204: }
1205:
1206: /* handlers for DMA transfers */
1207: static int fdctrl_transfer_handler (void *opaque, int nchan,
1208: int dma_pos, int dma_len)
1209: {
1.1.1.10 root 1210: FDCtrl *fdctrl;
1211: FDrive *cur_drv;
1.1 root 1212: int len, start_pos, rel_pos;
1213: uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1214:
1215: fdctrl = opaque;
1.1.1.4 root 1216: if (fdctrl->msr & FD_MSR_RQM) {
1.1 root 1217: FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1218: return 0;
1219: }
1220: cur_drv = get_cur_drv(fdctrl);
1221: if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1222: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1223: status2 = FD_SR2_SNS;
1.1 root 1224: if (dma_len > fdctrl->data_len)
1225: dma_len = fdctrl->data_len;
1226: if (cur_drv->bs == NULL) {
1.1.1.3 root 1227: if (fdctrl->data_dir == FD_DIR_WRITE)
1.1.1.4 root 1228: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1229: else
1.1.1.4 root 1230: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1.1.3 root 1231: len = 0;
1.1 root 1232: goto transfer_error;
1233: }
1234: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1235: for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1236: len = dma_len - fdctrl->data_pos;
1237: if (len + rel_pos > FD_SECTOR_LEN)
1238: len = FD_SECTOR_LEN - rel_pos;
1239: FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1240: "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1.1.1.4 root 1241: fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1.1 root 1242: cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1.1.1.4 root 1243: fd_sector(cur_drv) * FD_SECTOR_LEN);
1.1 root 1244: if (fdctrl->data_dir != FD_DIR_WRITE ||
1.1.1.3 root 1245: len < FD_SECTOR_LEN || rel_pos != 0) {
1.1 root 1246: /* READ & SCAN commands and realign to a sector for WRITE */
1247: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1248: fdctrl->fifo, 1) < 0) {
1.1 root 1249: FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1250: fd_sector(cur_drv));
1251: /* Sure, image size is too small... */
1252: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1253: }
1254: }
1.1.1.3 root 1255: switch (fdctrl->data_dir) {
1256: case FD_DIR_READ:
1257: /* READ commands */
1.1 root 1258: DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1259: fdctrl->data_pos, len);
1.1.1.3 root 1260: break;
1261: case FD_DIR_WRITE:
1.1 root 1262: /* WRITE commands */
1263: DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1264: fdctrl->data_pos, len);
1265: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1266: fdctrl->fifo, 1) < 0) {
1.1.1.4 root 1267: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1268: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1269: goto transfer_error;
1270: }
1.1.1.3 root 1271: break;
1272: default:
1273: /* SCAN commands */
1.1 root 1274: {
1.1.1.3 root 1275: uint8_t tmpbuf[FD_SECTOR_LEN];
1.1 root 1276: int ret;
1277: DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1278: ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1279: if (ret == 0) {
1.1.1.4 root 1280: status2 = FD_SR2_SEH;
1.1 root 1281: goto end_transfer;
1282: }
1283: if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1284: (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1285: status2 = 0x00;
1286: goto end_transfer;
1287: }
1288: }
1.1.1.3 root 1289: break;
1.1 root 1290: }
1.1.1.3 root 1291: fdctrl->data_pos += len;
1292: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1.1 root 1293: if (rel_pos == 0) {
1294: /* Seek to next sector */
1.1.1.4 root 1295: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1296: break;
1.1 root 1297: }
1298: }
1.1.1.3 root 1299: end_transfer:
1.1 root 1300: len = fdctrl->data_pos - start_pos;
1301: FLOPPY_DPRINTF("end transfer %d %d %d\n",
1.1.1.3 root 1302: fdctrl->data_pos, len, fdctrl->data_len);
1.1 root 1303: if (fdctrl->data_dir == FD_DIR_SCANE ||
1304: fdctrl->data_dir == FD_DIR_SCANL ||
1305: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1306: status2 = FD_SR2_SEH;
1.1 root 1307: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1308: status0 |= FD_SR0_SEEK;
1.1 root 1309: fdctrl->data_len -= len;
1310: fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1.1.1.3 root 1311: transfer_error:
1.1 root 1312:
1313: return len;
1314: }
1315:
1316: /* Data register : 0x05 */
1.1.1.10 root 1317: static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
1.1 root 1318: {
1.1.1.10 root 1319: FDrive *cur_drv;
1.1 root 1320: uint32_t retval = 0;
1.1.1.4 root 1321: int pos;
1.1 root 1322:
1323: cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1324: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1325: if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1326: FLOPPY_ERROR("controller not ready for reading\n");
1.1 root 1327: return 0;
1328: }
1329: pos = fdctrl->data_pos;
1.1.1.4 root 1330: if (fdctrl->msr & FD_MSR_NONDMA) {
1.1 root 1331: pos %= FD_SECTOR_LEN;
1332: if (pos == 0) {
1.1.1.4 root 1333: if (fdctrl->data_pos != 0)
1334: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1335: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1336: fd_sector(cur_drv));
1337: return 0;
1338: }
1339: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1340: FLOPPY_DPRINTF("error getting sector %d\n",
1341: fd_sector(cur_drv));
1342: /* Sure, image size is too small... */
1343: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1344: }
1.1 root 1345: }
1346: }
1347: retval = fdctrl->fifo[pos];
1348: if (++fdctrl->data_pos == fdctrl->data_len) {
1349: fdctrl->data_pos = 0;
1350: /* Switch from transfer mode to status mode
1351: * then from status mode to command mode
1352: */
1.1.1.4 root 1353: if (fdctrl->msr & FD_MSR_NONDMA) {
1354: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1355: } else {
1356: fdctrl_reset_fifo(fdctrl);
1357: fdctrl_reset_irq(fdctrl);
1358: }
1359: }
1360: FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1361:
1362: return retval;
1363: }
1364:
1.1.1.10 root 1365: static void fdctrl_format_sector(FDCtrl *fdctrl)
1.1 root 1366: {
1.1.1.10 root 1367: FDrive *cur_drv;
1.1 root 1368: uint8_t kh, kt, ks;
1369:
1.1.1.4 root 1370: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1371: cur_drv = get_cur_drv(fdctrl);
1372: kt = fdctrl->fifo[6];
1373: kh = fdctrl->fifo[7];
1374: ks = fdctrl->fifo[8];
1375: FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1376: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.10 root 1377: fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
1.1.1.4 root 1378: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1379: case 2:
1380: /* sect too big */
1.1.1.4 root 1381: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1382: fdctrl->fifo[3] = kt;
1383: fdctrl->fifo[4] = kh;
1384: fdctrl->fifo[5] = ks;
1385: return;
1386: case 3:
1387: /* track too big */
1.1.1.4 root 1388: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1389: fdctrl->fifo[3] = kt;
1390: fdctrl->fifo[4] = kh;
1391: fdctrl->fifo[5] = ks;
1392: return;
1393: case 4:
1394: /* No seek enabled */
1.1.1.4 root 1395: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1396: fdctrl->fifo[3] = kt;
1397: fdctrl->fifo[4] = kh;
1398: fdctrl->fifo[5] = ks;
1399: return;
1400: case 1:
1401: fdctrl->data_state |= FD_STATE_SEEK;
1402: break;
1403: default:
1404: break;
1405: }
1406: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1407: if (cur_drv->bs == NULL ||
1408: bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1.1.1.3 root 1409: FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1.1.1.4 root 1410: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1411: } else {
1.1.1.3 root 1412: if (cur_drv->sect == cur_drv->last_sect) {
1413: fdctrl->data_state &= ~FD_STATE_FORMAT;
1414: /* Last sector done */
1415: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1416: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1417: else
1418: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1419: } else {
1420: /* More to do */
1421: fdctrl->data_pos = 0;
1422: fdctrl->data_len = 4;
1423: }
1.1 root 1424: }
1425: }
1426:
1.1.1.10 root 1427: static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
1.1 root 1428: {
1.1.1.4 root 1429: fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1430: fdctrl->fifo[0] = fdctrl->lock << 4;
1431: fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
1432: }
1.1 root 1433:
1.1.1.10 root 1434: static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1435: {
1.1.1.10 root 1436: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1437:
1438: /* Drives position */
1439: fdctrl->fifo[0] = drv0(fdctrl)->track;
1440: fdctrl->fifo[1] = drv1(fdctrl)->track;
1441: #if MAX_FD == 4
1442: fdctrl->fifo[2] = drv2(fdctrl)->track;
1443: fdctrl->fifo[3] = drv3(fdctrl)->track;
1.1 root 1444: #else
1.1.1.4 root 1445: fdctrl->fifo[2] = 0;
1446: fdctrl->fifo[3] = 0;
1.1 root 1447: #endif
1.1.1.4 root 1448: /* timers */
1449: fdctrl->fifo[4] = fdctrl->timer0;
1450: fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1451: fdctrl->fifo[6] = cur_drv->last_sect;
1452: fdctrl->fifo[7] = (fdctrl->lock << 7) |
1453: (cur_drv->perpendicular << 2);
1454: fdctrl->fifo[8] = fdctrl->config;
1455: fdctrl->fifo[9] = fdctrl->precomp_trk;
1456: fdctrl_set_fifo(fdctrl, 10, 0);
1457: }
1458:
1.1.1.10 root 1459: static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1460: {
1461: /* Controller's version */
1462: fdctrl->fifo[0] = fdctrl->version;
1463: fdctrl_set_fifo(fdctrl, 1, 1);
1464: }
1465:
1.1.1.10 root 1466: static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1467: {
1468: fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1469: fdctrl_set_fifo(fdctrl, 1, 0);
1470: }
1471:
1.1.1.10 root 1472: static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1473: {
1.1.1.10 root 1474: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1475:
1476: /* Drives position */
1477: drv0(fdctrl)->track = fdctrl->fifo[3];
1478: drv1(fdctrl)->track = fdctrl->fifo[4];
1479: #if MAX_FD == 4
1480: drv2(fdctrl)->track = fdctrl->fifo[5];
1481: drv3(fdctrl)->track = fdctrl->fifo[6];
1482: #endif
1483: /* timers */
1484: fdctrl->timer0 = fdctrl->fifo[7];
1485: fdctrl->timer1 = fdctrl->fifo[8];
1486: cur_drv->last_sect = fdctrl->fifo[9];
1487: fdctrl->lock = fdctrl->fifo[10] >> 7;
1488: cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1489: fdctrl->config = fdctrl->fifo[11];
1490: fdctrl->precomp_trk = fdctrl->fifo[12];
1491: fdctrl->pwrd = fdctrl->fifo[13];
1492: fdctrl_reset_fifo(fdctrl);
1493: }
1494:
1.1.1.10 root 1495: static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1496: {
1.1.1.10 root 1497: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1498:
1499: fdctrl->fifo[0] = 0;
1500: fdctrl->fifo[1] = 0;
1501: /* Drives position */
1502: fdctrl->fifo[2] = drv0(fdctrl)->track;
1503: fdctrl->fifo[3] = drv1(fdctrl)->track;
1504: #if MAX_FD == 4
1505: fdctrl->fifo[4] = drv2(fdctrl)->track;
1506: fdctrl->fifo[5] = drv3(fdctrl)->track;
1507: #else
1508: fdctrl->fifo[4] = 0;
1509: fdctrl->fifo[5] = 0;
1510: #endif
1511: /* timers */
1512: fdctrl->fifo[6] = fdctrl->timer0;
1513: fdctrl->fifo[7] = fdctrl->timer1;
1514: fdctrl->fifo[8] = cur_drv->last_sect;
1515: fdctrl->fifo[9] = (fdctrl->lock << 7) |
1516: (cur_drv->perpendicular << 2);
1517: fdctrl->fifo[10] = fdctrl->config;
1518: fdctrl->fifo[11] = fdctrl->precomp_trk;
1519: fdctrl->fifo[12] = fdctrl->pwrd;
1520: fdctrl->fifo[13] = 0;
1521: fdctrl->fifo[14] = 0;
1522: fdctrl_set_fifo(fdctrl, 15, 1);
1523: }
1524:
1.1.1.10 root 1525: static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1526: {
1.1.1.10 root 1527: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1528:
1529: /* XXX: should set main status register to busy */
1530: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1531: qemu_mod_timer(fdctrl->result_timer,
1.1.1.6 root 1532: qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
1.1.1.4 root 1533: }
1534:
1.1.1.10 root 1535: static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1536: {
1.1.1.10 root 1537: FDrive *cur_drv;
1.1.1.4 root 1538:
1539: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1540: cur_drv = get_cur_drv(fdctrl);
1541: fdctrl->data_state |= FD_STATE_FORMAT;
1542: if (fdctrl->fifo[0] & 0x80)
1543: fdctrl->data_state |= FD_STATE_MULTI;
1544: else
1545: fdctrl->data_state &= ~FD_STATE_MULTI;
1546: fdctrl->data_state &= ~FD_STATE_SEEK;
1547: cur_drv->bps =
1548: fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1549: #if 0
1550: cur_drv->last_sect =
1551: cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1552: fdctrl->fifo[3] / 2;
1553: #else
1554: cur_drv->last_sect = fdctrl->fifo[3];
1555: #endif
1556: /* TODO: implement format using DMA expected by the Bochs BIOS
1557: * and Linux fdformat (read 3 bytes per sector via DMA and fill
1558: * the sector with the specified fill byte
1559: */
1560: fdctrl->data_state &= ~FD_STATE_FORMAT;
1561: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1562: }
1563:
1.1.1.10 root 1564: static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1565: {
1566: fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1567: fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1568: if (fdctrl->fifo[2] & 1)
1569: fdctrl->dor &= ~FD_DOR_DMAEN;
1570: else
1571: fdctrl->dor |= FD_DOR_DMAEN;
1572: /* No result back */
1573: fdctrl_reset_fifo(fdctrl);
1574: }
1575:
1.1.1.10 root 1576: static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1577: {
1.1.1.10 root 1578: FDrive *cur_drv;
1.1.1.4 root 1579:
1580: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1581: cur_drv = get_cur_drv(fdctrl);
1582: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1583: /* 1 Byte status back */
1584: fdctrl->fifo[0] = (cur_drv->ro << 6) |
1585: (cur_drv->track == 0 ? 0x10 : 0x00) |
1586: (cur_drv->head << 2) |
1587: GET_CUR_DRV(fdctrl) |
1588: 0x28;
1589: fdctrl_set_fifo(fdctrl, 1, 0);
1590: }
1591:
1.1.1.10 root 1592: static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1593: {
1.1.1.10 root 1594: FDrive *cur_drv;
1.1.1.4 root 1595:
1596: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1597: cur_drv = get_cur_drv(fdctrl);
1598: fd_recalibrate(cur_drv);
1599: fdctrl_reset_fifo(fdctrl);
1600: /* Raise Interrupt */
1601: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1602: }
1603:
1.1.1.10 root 1604: static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1605: {
1.1.1.10 root 1606: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1607:
1608: if(fdctrl->reset_sensei > 0) {
1609: fdctrl->fifo[0] =
1610: FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1611: fdctrl->reset_sensei--;
1612: } else {
1613: /* XXX: status0 handling is broken for read/write
1614: commands, so we do this hack. It should be suppressed
1615: ASAP */
1616: fdctrl->fifo[0] =
1617: FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1618: }
1619:
1620: fdctrl->fifo[1] = cur_drv->track;
1621: fdctrl_set_fifo(fdctrl, 2, 0);
1622: fdctrl_reset_irq(fdctrl);
1623: fdctrl->status0 = FD_SR0_RDYCHG;
1624: }
1625:
1.1.1.10 root 1626: static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1627: {
1.1.1.10 root 1628: FDrive *cur_drv;
1.1.1.4 root 1629:
1630: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1631: cur_drv = get_cur_drv(fdctrl);
1632: fdctrl_reset_fifo(fdctrl);
1633: if (fdctrl->fifo[2] > cur_drv->max_track) {
1634: fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
1635: } else {
1636: cur_drv->track = fdctrl->fifo[2];
1637: /* Raise Interrupt */
1638: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1639: }
1640: }
1641:
1.1.1.10 root 1642: static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1643: {
1.1.1.10 root 1644: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1645:
1646: if (fdctrl->fifo[1] & 0x80)
1647: cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1648: /* No result back */
1649: fdctrl_reset_fifo(fdctrl);
1650: }
1651:
1.1.1.10 root 1652: static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1653: {
1654: fdctrl->config = fdctrl->fifo[2];
1655: fdctrl->precomp_trk = fdctrl->fifo[3];
1656: /* No result back */
1657: fdctrl_reset_fifo(fdctrl);
1658: }
1659:
1.1.1.10 root 1660: static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1661: {
1662: fdctrl->pwrd = fdctrl->fifo[1];
1663: fdctrl->fifo[0] = fdctrl->fifo[1];
1664: fdctrl_set_fifo(fdctrl, 1, 1);
1665: }
1666:
1.1.1.10 root 1667: static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1668: {
1669: /* No result back */
1670: fdctrl_reset_fifo(fdctrl);
1671: }
1672:
1.1.1.10 root 1673: static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1674: {
1.1.1.10 root 1675: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1676:
1677: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
1678: /* Command parameters done */
1679: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1680: fdctrl->fifo[0] = fdctrl->fifo[1];
1681: fdctrl->fifo[2] = 0;
1682: fdctrl->fifo[3] = 0;
1683: fdctrl_set_fifo(fdctrl, 4, 1);
1684: } else {
1685: fdctrl_reset_fifo(fdctrl);
1.1 root 1686: }
1.1.1.4 root 1687: } else if (fdctrl->data_len > 7) {
1688: /* ERROR */
1689: fdctrl->fifo[0] = 0x80 |
1690: (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1691: fdctrl_set_fifo(fdctrl, 1, 1);
1692: }
1693: }
1694:
1.1.1.10 root 1695: static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1696: {
1.1.1.10 root 1697: FDrive *cur_drv;
1.1.1.4 root 1698:
1699: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1700: cur_drv = get_cur_drv(fdctrl);
1701: if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1702: cur_drv->track = cur_drv->max_track - 1;
1703: } else {
1704: cur_drv->track += fdctrl->fifo[2];
1.1 root 1705: }
1.1.1.4 root 1706: fdctrl_reset_fifo(fdctrl);
1707: /* Raise Interrupt */
1708: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1709: }
1710:
1.1.1.10 root 1711: static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1712: {
1.1.1.10 root 1713: FDrive *cur_drv;
1.1.1.4 root 1714:
1715: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1716: cur_drv = get_cur_drv(fdctrl);
1717: if (fdctrl->fifo[2] > cur_drv->track) {
1718: cur_drv->track = 0;
1719: } else {
1720: cur_drv->track -= fdctrl->fifo[2];
1721: }
1722: fdctrl_reset_fifo(fdctrl);
1723: /* Raise Interrupt */
1724: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1725: }
1726:
1727: static const struct {
1728: uint8_t value;
1729: uint8_t mask;
1730: const char* name;
1731: int parameters;
1.1.1.10 root 1732: void (*handler)(FDCtrl *fdctrl, int direction);
1.1.1.4 root 1733: int direction;
1734: } handlers[] = {
1735: { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
1736: { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
1737: { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
1738: { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
1739: { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
1740: { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
1741: { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
1742: { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
1743: { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
1744: { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
1745: { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
1746: { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
1747: { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
1748: { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
1749: { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
1750: { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
1751: { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
1752: { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
1753: { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
1754: { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
1755: { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
1756: { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
1757: { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
1758: { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
1759: { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
1760: { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
1761: { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
1762: { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
1763: { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
1764: { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
1765: { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
1766: { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
1767: };
1768: /* Associate command to an index in the 'handlers' array */
1769: static uint8_t command_to_handler[256];
1770:
1.1.1.10 root 1771: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
1.1.1.4 root 1772: {
1.1.1.10 root 1773: FDrive *cur_drv;
1.1.1.4 root 1774: int pos;
1775:
1776: /* Reset mode */
1777: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1778: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1779: return;
1780: }
1781: if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
1782: FLOPPY_ERROR("controller not ready for writing\n");
1783: return;
1784: }
1785: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1786: /* Is it write command time ? */
1787: if (fdctrl->msr & FD_MSR_NONDMA) {
1788: /* FIFO data write */
1789: pos = fdctrl->data_pos++;
1790: pos %= FD_SECTOR_LEN;
1791: fdctrl->fifo[pos] = value;
1792: if (pos == FD_SECTOR_LEN - 1 ||
1793: fdctrl->data_pos == fdctrl->data_len) {
1794: cur_drv = get_cur_drv(fdctrl);
1795: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1796: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1797: return;
1798: }
1799: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1800: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1801: fd_sector(cur_drv));
1802: return;
1803: }
1804: }
1805: /* Switch from transfer mode to status mode
1806: * then from status mode to command mode
1807: */
1808: if (fdctrl->data_pos == fdctrl->data_len)
1809: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1810: return;
1811: }
1812: if (fdctrl->data_pos == 0) {
1813: /* Command */
1814: pos = command_to_handler[value & 0xff];
1815: FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
1816: fdctrl->data_len = handlers[pos].parameters + 1;
1817: }
1818:
1.1 root 1819: FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1.1.1.4 root 1820: fdctrl->fifo[fdctrl->data_pos++] = value;
1821: if (fdctrl->data_pos == fdctrl->data_len) {
1.1 root 1822: /* We now have all parameters
1823: * and will be able to treat the command
1824: */
1.1.1.3 root 1825: if (fdctrl->data_state & FD_STATE_FORMAT) {
1826: fdctrl_format_sector(fdctrl);
1.1 root 1827: return;
1828: }
1.1.1.4 root 1829:
1830: pos = command_to_handler[fdctrl->fifo[0] & 0xff];
1831: FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
1832: (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
1.1 root 1833: }
1834: }
1835:
1836: static void fdctrl_result_timer(void *opaque)
1837: {
1.1.1.10 root 1838: FDCtrl *fdctrl = opaque;
1839: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.3 root 1840:
1841: /* Pretend we are spinning.
1842: * This is needed for Coherent, which uses READ ID to check for
1843: * sector interleaving.
1844: */
1845: if (cur_drv->last_sect != 0) {
1846: cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
1847: }
1.1 root 1848: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1849: }
1.1.1.4 root 1850:
1851: /* Init functions */
1.1.1.10 root 1852: static int fdctrl_connect_drives(FDCtrl *fdctrl)
1.1.1.6 root 1853: {
1854: unsigned int i;
1.1.1.10 root 1855: FDrive *drive;
1.1.1.6 root 1856:
1857: for (i = 0; i < MAX_FD; i++) {
1.1.1.10 root 1858: drive = &fdctrl->drives[i];
1859:
1860: if (drive->bs) {
1861: if (bdrv_get_on_error(drive->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
1862: error_report("fdc doesn't support drive option werror");
1863: return -1;
1864: }
1865: if (bdrv_get_on_error(drive->bs, 1) != BLOCK_ERR_REPORT) {
1866: error_report("fdc doesn't support drive option rerror");
1867: return -1;
1868: }
1869: }
1870:
1871: fd_init(drive);
1872: fd_revalidate(drive);
1873: if (drive->bs) {
1874: bdrv_set_removable(drive->bs, 1);
1875: }
1.1.1.6 root 1876: }
1.1.1.10 root 1877: return 0;
1.1.1.6 root 1878: }
1879:
1.1.1.10 root 1880: FDCtrl *fdctrl_init_isa(DriveInfo **fds)
1.1.1.6 root 1881: {
1882: ISADevice *dev;
1883:
1884: dev = isa_create("isa-fdc");
1.1.1.8 root 1885: if (fds[0]) {
1.1.1.10 root 1886: qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
1.1.1.8 root 1887: }
1888: if (fds[1]) {
1.1.1.10 root 1889: qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
1.1.1.8 root 1890: }
1.1.1.10 root 1891: qdev_init_nofail(&dev->qdev);
1892: return &(DO_UPCAST(FDCtrlISABus, busdev, dev)->state);
1.1.1.6 root 1893: }
1894:
1.1.1.10 root 1895: FDCtrl *fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
1896: target_phys_addr_t mmio_base, DriveInfo **fds)
1.1.1.6 root 1897: {
1.1.1.10 root 1898: FDCtrl *fdctrl;
1.1.1.6 root 1899: DeviceState *dev;
1.1.1.10 root 1900: FDCtrlSysBus *sys;
1.1.1.6 root 1901:
1902: dev = qdev_create(NULL, "sysbus-fdc");
1.1.1.10 root 1903: sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
1.1.1.6 root 1904: fdctrl = &sys->state;
1905: fdctrl->dma_chann = dma_chann; /* FIXME */
1.1.1.8 root 1906: if (fds[0]) {
1.1.1.10 root 1907: qdev_prop_set_drive_nofail(dev, "driveA", fds[0]->bdrv);
1.1.1.8 root 1908: }
1909: if (fds[1]) {
1.1.1.10 root 1910: qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv);
1.1.1.8 root 1911: }
1.1.1.6 root 1912: qdev_init_nofail(dev);
1913: sysbus_connect_irq(&sys->busdev, 0, irq);
1914: sysbus_mmio_map(&sys->busdev, 0, mmio_base);
1915:
1916: return fdctrl;
1917: }
1918:
1.1.1.10 root 1919: FDCtrl *sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
1920: DriveInfo **fds, qemu_irq *fdc_tc)
1.1.1.6 root 1921: {
1922: DeviceState *dev;
1.1.1.10 root 1923: FDCtrlSysBus *sys;
1924: FDCtrl *fdctrl;
1.1.1.6 root 1925:
1926: dev = qdev_create(NULL, "SUNW,fdtwo");
1.1.1.8 root 1927: if (fds[0]) {
1.1.1.10 root 1928: qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv);
1.1.1.8 root 1929: }
1.1.1.6 root 1930: qdev_init_nofail(dev);
1.1.1.10 root 1931: sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
1.1.1.6 root 1932: fdctrl = &sys->state;
1933: sysbus_connect_irq(&sys->busdev, 0, irq);
1934: sysbus_mmio_map(&sys->busdev, 0, io_base);
1935: *fdc_tc = qdev_get_gpio_in(dev, 0);
1936:
1937: return fdctrl;
1938: }
1939:
1.1.1.10 root 1940: static int fdctrl_init_common(FDCtrl *fdctrl)
1.1.1.4 root 1941: {
1942: int i, j;
1.1.1.6 root 1943: static int command_tables_inited = 0;
1.1.1.4 root 1944:
1945: /* Fill 'command_to_handler' lookup table */
1.1.1.6 root 1946: if (!command_tables_inited) {
1947: command_tables_inited = 1;
1948: for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) {
1949: for (j = 0; j < sizeof(command_to_handler); j++) {
1950: if ((j & handlers[i].mask) == handlers[i].value) {
1951: command_to_handler[j] = i;
1952: }
1953: }
1.1.1.4 root 1954: }
1955: }
1956:
1957: FLOPPY_DPRINTF("init controller\n");
1958: fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
1.1.1.6 root 1959: fdctrl->fifo_size = 512;
1.1.1.4 root 1960: fdctrl->result_timer = qemu_new_timer(vm_clock,
1961: fdctrl_result_timer, fdctrl);
1962:
1963: fdctrl->version = 0x90; /* Intel 82078 controller */
1964: fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
1.1.1.6 root 1965: fdctrl->num_floppies = MAX_FD;
1966:
1967: if (fdctrl->dma_chann != -1)
1968: DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl);
1.1.1.10 root 1969: return fdctrl_connect_drives(fdctrl);
1.1.1.4 root 1970: }
1971:
1.1.1.6 root 1972: static int isabus_fdc_init1(ISADevice *dev)
1.1.1.4 root 1973: {
1.1.1.10 root 1974: FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
1975: FDCtrl *fdctrl = &isa->state;
1.1.1.6 root 1976: int iobase = 0x3f0;
1977: int isairq = 6;
1978: int dma_chann = 2;
1979: int ret;
1.1.1.4 root 1980:
1.1.1.6 root 1981: register_ioport_read(iobase + 0x01, 5, 1,
1982: &fdctrl_read_port, fdctrl);
1983: register_ioport_read(iobase + 0x07, 1, 1,
1984: &fdctrl_read_port, fdctrl);
1985: register_ioport_write(iobase + 0x01, 5, 1,
1986: &fdctrl_write_port, fdctrl);
1987: register_ioport_write(iobase + 0x07, 1, 1,
1988: &fdctrl_write_port, fdctrl);
1.1.1.11! root 1989: isa_init_ioport_range(dev, iobase, 6);
! 1990: isa_init_ioport(dev, iobase + 7);
! 1991:
1.1.1.6 root 1992: isa_init_irq(&isa->busdev, &fdctrl->irq, isairq);
1993: fdctrl->dma_chann = dma_chann;
1.1.1.4 root 1994:
1.1.1.10 root 1995: qdev_set_legacy_instance_id(&dev->qdev, iobase, 2);
1996: ret = fdctrl_init_common(fdctrl);
1.1.1.5 root 1997:
1.1.1.11! root 1998: add_boot_device_path(isa->bootindexA, &dev->qdev, "/floppy@0");
! 1999: add_boot_device_path(isa->bootindexB, &dev->qdev, "/floppy@1");
! 2000:
1.1.1.6 root 2001: return ret;
1.1.1.4 root 2002: }
2003:
1.1.1.6 root 2004: static int sysbus_fdc_init1(SysBusDevice *dev)
1.1.1.4 root 2005: {
1.1.1.10 root 2006: FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
2007: FDCtrl *fdctrl = &sys->state;
1.1.1.6 root 2008: int io;
2009: int ret;
1.1.1.4 root 2010:
1.1.1.11! root 2011: io = cpu_register_io_memory(fdctrl_mem_read, fdctrl_mem_write, fdctrl,
! 2012: DEVICE_NATIVE_ENDIAN);
1.1.1.6 root 2013: sysbus_init_mmio(dev, 0x08, io);
2014: sysbus_init_irq(dev, &fdctrl->irq);
2015: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2016: fdctrl->dma_chann = -1;
1.1.1.5 root 2017:
1.1.1.10 root 2018: qdev_set_legacy_instance_id(&dev->qdev, io, 2);
2019: ret = fdctrl_init_common(fdctrl);
1.1.1.4 root 2020:
1.1.1.6 root 2021: return ret;
1.1.1.4 root 2022: }
1.1.1.5 root 2023:
1.1.1.6 root 2024: static int sun4m_fdc_init1(SysBusDevice *dev)
1.1.1.5 root 2025: {
1.1.1.10 root 2026: FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
1.1.1.5 root 2027: int io;
2028:
1.1.1.6 root 2029: io = cpu_register_io_memory(fdctrl_mem_read_strict,
1.1.1.11! root 2030: fdctrl_mem_write_strict, fdctrl,
! 2031: DEVICE_NATIVE_ENDIAN);
1.1.1.5 root 2032: sysbus_init_mmio(dev, 0x08, io);
1.1.1.6 root 2033: sysbus_init_irq(dev, &fdctrl->irq);
2034: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2035:
2036: fdctrl->sun4m = 1;
1.1.1.10 root 2037: qdev_set_legacy_instance_id(&dev->qdev, io, 2);
2038: return fdctrl_init_common(fdctrl);
1.1.1.5 root 2039: }
2040:
1.1.1.10 root 2041: static const VMStateDescription vmstate_isa_fdc ={
2042: .name = "fdc",
2043: .version_id = 2,
2044: .minimum_version_id = 2,
2045: .fields = (VMStateField []) {
2046: VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl),
2047: VMSTATE_END_OF_LIST()
2048: }
2049: };
2050:
1.1.1.6 root 2051: static ISADeviceInfo isa_fdc_info = {
2052: .init = isabus_fdc_init1,
2053: .qdev.name = "isa-fdc",
1.1.1.11! root 2054: .qdev.fw_name = "fdc",
1.1.1.10 root 2055: .qdev.size = sizeof(FDCtrlISABus),
1.1.1.6 root 2056: .qdev.no_user = 1,
1.1.1.10 root 2057: .qdev.vmsd = &vmstate_isa_fdc,
1.1.1.6 root 2058: .qdev.reset = fdctrl_external_reset_isa,
2059: .qdev.props = (Property[]) {
1.1.1.10 root 2060: DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs),
2061: DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
1.1.1.11! root 2062: DEFINE_PROP_INT32("bootindexA", FDCtrlISABus, bootindexA, -1),
! 2063: DEFINE_PROP_INT32("bootindexB", FDCtrlISABus, bootindexB, -1),
1.1.1.6 root 2064: DEFINE_PROP_END_OF_LIST(),
2065: },
2066: };
1.1.1.5 root 2067:
1.1.1.10 root 2068: static const VMStateDescription vmstate_sysbus_fdc ={
2069: .name = "fdc",
2070: .version_id = 2,
2071: .minimum_version_id = 2,
2072: .fields = (VMStateField []) {
2073: VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
2074: VMSTATE_END_OF_LIST()
2075: }
2076: };
2077:
1.1.1.6 root 2078: static SysBusDeviceInfo sysbus_fdc_info = {
2079: .init = sysbus_fdc_init1,
2080: .qdev.name = "sysbus-fdc",
1.1.1.10 root 2081: .qdev.size = sizeof(FDCtrlSysBus),
2082: .qdev.vmsd = &vmstate_sysbus_fdc,
1.1.1.6 root 2083: .qdev.reset = fdctrl_external_reset_sysbus,
1.1.1.5 root 2084: .qdev.props = (Property[]) {
1.1.1.10 root 2085: DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs),
2086: DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs),
1.1.1.6 root 2087: DEFINE_PROP_END_OF_LIST(),
2088: },
2089: };
2090:
2091: static SysBusDeviceInfo sun4m_fdc_info = {
2092: .init = sun4m_fdc_init1,
2093: .qdev.name = "SUNW,fdtwo",
1.1.1.10 root 2094: .qdev.size = sizeof(FDCtrlSysBus),
2095: .qdev.vmsd = &vmstate_sysbus_fdc,
1.1.1.6 root 2096: .qdev.reset = fdctrl_external_reset_sysbus,
2097: .qdev.props = (Property[]) {
1.1.1.10 root 2098: DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs),
1.1.1.6 root 2099: DEFINE_PROP_END_OF_LIST(),
2100: },
1.1.1.5 root 2101: };
2102:
2103: static void fdc_register_devices(void)
2104: {
1.1.1.6 root 2105: isa_qdev_register(&isa_fdc_info);
2106: sysbus_register_withprop(&sysbus_fdc_info);
2107: sysbus_register_withprop(&sun4m_fdc_info);
1.1.1.5 root 2108: }
2109:
2110: device_init(fdc_register_devices)
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