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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
1.1.1.14! root 5: * Copyright (c) 2008 Hervé 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:
1.1.1.14! root 65: typedef struct FDCtrl FDCtrl;
! 66:
1.1 root 67: /* Floppy disk drive emulation */
1.1.1.10 root 68: typedef enum FDiskFlags {
1.1 root 69: FDISK_DBL_SIDES = 0x01,
1.1.1.10 root 70: } FDiskFlags;
1.1 root 71:
1.1.1.10 root 72: typedef struct FDrive {
1.1.1.14! root 73: FDCtrl *fdctrl;
1.1 root 74: BlockDriverState *bs;
75: /* Drive status */
1.1.1.10 root 76: FDriveType drive;
1.1 root 77: uint8_t perpendicular; /* 2.88 MB access mode */
78: /* Position */
79: uint8_t head;
80: uint8_t track;
81: uint8_t sect;
82: /* Media */
1.1.1.10 root 83: FDiskFlags flags;
1.1 root 84: uint8_t last_sect; /* Nb sector per track */
85: uint8_t max_track; /* Nb of tracks */
86: uint16_t bps; /* Bytes per sector */
87: uint8_t ro; /* Is read-only */
1.1.1.13 root 88: uint8_t media_changed; /* Is media changed */
1.1.1.14! root 89: uint8_t media_rate; /* Data rate of medium */
1.1.1.10 root 90: } FDrive;
1.1 root 91:
1.1.1.10 root 92: static void fd_init(FDrive *drv)
1.1 root 93: {
94: /* Drive */
95: drv->drive = FDRIVE_DRV_NONE;
96: drv->perpendicular = 0;
97: /* Disk */
98: drv->last_sect = 0;
99: drv->max_track = 0;
100: }
101:
1.1.1.14! root 102: #define NUM_SIDES(drv) ((drv)->flags & FDISK_DBL_SIDES ? 2 : 1)
! 103:
1.1.1.10 root 104: static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
1.1.1.14! root 105: uint8_t last_sect, uint8_t num_sides)
1.1 root 106: {
1.1.1.14! root 107: return (((track * num_sides) + head) * last_sect) + sect - 1;
1.1 root 108: }
109:
110: /* Returns current position, in sectors, for given drive */
1.1.1.10 root 111: static int fd_sector(FDrive *drv)
1.1 root 112: {
1.1.1.14! root 113: return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect,
! 114: NUM_SIDES(drv));
1.1 root 115: }
116:
1.1.1.4 root 117: /* Seek to a new position:
118: * returns 0 if already on right track
119: * returns 1 if track changed
120: * returns 2 if track is invalid
121: * returns 3 if sector is invalid
122: * returns 4 if seek is disabled
123: */
1.1.1.10 root 124: static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
125: int enable_seek)
1.1 root 126: {
127: uint32_t sector;
128: int ret;
129:
130: if (track > drv->max_track ||
1.1.1.3 root 131: (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
1.1 root 132: FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
133: head, track, sect, 1,
134: (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
135: drv->max_track, drv->last_sect);
136: return 2;
137: }
138: if (sect > drv->last_sect) {
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 3;
144: }
1.1.1.14! root 145: sector = fd_sector_calc(head, track, sect, drv->last_sect, NUM_SIDES(drv));
1.1 root 146: ret = 0;
147: if (sector != fd_sector(drv)) {
148: #if 0
149: if (!enable_seek) {
150: FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
151: head, track, sect, 1, drv->max_track, drv->last_sect);
152: return 4;
153: }
154: #endif
155: drv->head = head;
1.1.1.3 root 156: if (drv->track != track)
157: ret = 1;
1.1 root 158: drv->track = track;
159: drv->sect = sect;
160: }
161:
1.1.1.14! root 162: if (drv->bs == NULL || !bdrv_is_inserted(drv->bs)) {
! 163: ret = 2;
! 164: }
! 165:
1.1 root 166: return ret;
167: }
168:
169: /* Set drive back to track 0 */
1.1.1.10 root 170: static void fd_recalibrate(FDrive *drv)
1.1 root 171: {
172: FLOPPY_DPRINTF("recalibrate\n");
173: drv->head = 0;
174: drv->track = 0;
175: drv->sect = 1;
176: }
177:
178: /* Revalidate a disk drive after a disk change */
1.1.1.10 root 179: static void fd_revalidate(FDrive *drv)
1.1 root 180: {
181: int nb_heads, max_track, last_sect, ro;
1.1.1.12 root 182: FDriveType drive;
1.1.1.14! root 183: FDriveRate rate;
1.1 root 184:
185: FLOPPY_DPRINTF("revalidate\n");
1.1.1.14! root 186: if (drv->bs != NULL) {
1.1.1.3 root 187: ro = bdrv_is_read_only(drv->bs);
1.1.1.12 root 188: bdrv_get_floppy_geometry_hint(drv->bs, &nb_heads, &max_track,
1.1.1.14! root 189: &last_sect, drv->drive, &drive, &rate);
! 190: if (!bdrv_is_inserted(drv->bs)) {
! 191: FLOPPY_DPRINTF("No disk in drive\n");
! 192: } else if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
! 193: FLOPPY_DPRINTF("User defined disk (%d %d %d)\n",
1.1 root 194: nb_heads - 1, max_track, last_sect);
1.1.1.3 root 195: } else {
1.1.1.12 root 196: FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads,
197: max_track, last_sect, ro ? "ro" : "rw");
1.1.1.3 root 198: }
199: if (nb_heads == 1) {
200: drv->flags &= ~FDISK_DBL_SIDES;
201: } else {
202: drv->flags |= FDISK_DBL_SIDES;
203: }
204: drv->max_track = max_track;
205: drv->last_sect = last_sect;
206: drv->ro = ro;
1.1.1.12 root 207: drv->drive = drive;
1.1.1.14! root 208: drv->media_rate = rate;
1.1 root 209: } else {
1.1.1.14! root 210: FLOPPY_DPRINTF("No drive connected\n");
1.1 root 211: drv->last_sect = 0;
1.1.1.3 root 212: drv->max_track = 0;
213: drv->flags &= ~FDISK_DBL_SIDES;
1.1 root 214: }
215: }
216:
217: /********************************************************/
218: /* Intel 82078 floppy disk controller emulation */
219:
1.1.1.10 root 220: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
221: static void fdctrl_reset_fifo(FDCtrl *fdctrl);
1.1 root 222: static int fdctrl_transfer_handler (void *opaque, int nchan,
223: int dma_pos, int dma_len);
1.1.1.10 root 224: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0);
1.1.1.14! root 225: static FDrive *get_cur_drv(FDCtrl *fdctrl);
1.1 root 226:
1.1.1.10 root 227: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
228: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
229: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl);
230: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value);
231: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl);
232: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value);
233: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl);
234: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
235: static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
236: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
237: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
1.1.1.14! root 238: static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value);
1.1 root 239:
240: enum {
241: FD_DIR_WRITE = 0,
242: FD_DIR_READ = 1,
243: FD_DIR_SCANE = 2,
244: FD_DIR_SCANL = 3,
245: FD_DIR_SCANH = 4,
246: };
247:
248: enum {
1.1.1.4 root 249: FD_STATE_MULTI = 0x01, /* multi track flag */
250: FD_STATE_FORMAT = 0x02, /* format flag */
251: FD_STATE_SEEK = 0x04, /* seek flag */
252: };
253:
254: enum {
255: FD_REG_SRA = 0x00,
256: FD_REG_SRB = 0x01,
257: FD_REG_DOR = 0x02,
258: FD_REG_TDR = 0x03,
259: FD_REG_MSR = 0x04,
260: FD_REG_DSR = 0x04,
261: FD_REG_FIFO = 0x05,
262: FD_REG_DIR = 0x07,
1.1.1.14! root 263: FD_REG_CCR = 0x07,
1.1.1.4 root 264: };
265:
266: enum {
267: FD_CMD_READ_TRACK = 0x02,
268: FD_CMD_SPECIFY = 0x03,
269: FD_CMD_SENSE_DRIVE_STATUS = 0x04,
270: FD_CMD_WRITE = 0x05,
271: FD_CMD_READ = 0x06,
272: FD_CMD_RECALIBRATE = 0x07,
273: FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
274: FD_CMD_WRITE_DELETED = 0x09,
275: FD_CMD_READ_ID = 0x0a,
276: FD_CMD_READ_DELETED = 0x0c,
277: FD_CMD_FORMAT_TRACK = 0x0d,
278: FD_CMD_DUMPREG = 0x0e,
279: FD_CMD_SEEK = 0x0f,
280: FD_CMD_VERSION = 0x10,
281: FD_CMD_SCAN_EQUAL = 0x11,
282: FD_CMD_PERPENDICULAR_MODE = 0x12,
283: FD_CMD_CONFIGURE = 0x13,
284: FD_CMD_LOCK = 0x14,
285: FD_CMD_VERIFY = 0x16,
286: FD_CMD_POWERDOWN_MODE = 0x17,
287: FD_CMD_PART_ID = 0x18,
288: FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
289: FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
1.1.1.9 root 290: FD_CMD_SAVE = 0x2e,
1.1.1.4 root 291: FD_CMD_OPTION = 0x33,
1.1.1.9 root 292: FD_CMD_RESTORE = 0x4e,
1.1.1.4 root 293: FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
294: FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
295: FD_CMD_FORMAT_AND_WRITE = 0xcd,
296: FD_CMD_RELATIVE_SEEK_IN = 0xcf,
297: };
298:
299: enum {
300: FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
301: FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
302: FD_CONFIG_POLL = 0x10, /* Poll enabled */
303: FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
304: FD_CONFIG_EIS = 0x40, /* No implied seeks */
305: };
306:
307: enum {
308: FD_SR0_EQPMT = 0x10,
309: FD_SR0_SEEK = 0x20,
310: FD_SR0_ABNTERM = 0x40,
311: FD_SR0_INVCMD = 0x80,
312: FD_SR0_RDYCHG = 0xc0,
313: };
314:
315: enum {
1.1.1.14! root 316: FD_SR1_MA = 0x01, /* Missing address mark */
! 317: FD_SR1_NW = 0x02, /* Not writable */
1.1.1.4 root 318: FD_SR1_EC = 0x80, /* End of cylinder */
319: };
320:
321: enum {
322: FD_SR2_SNS = 0x04, /* Scan not satisfied */
323: FD_SR2_SEH = 0x08, /* Scan equal hit */
324: };
325:
326: enum {
327: FD_SRA_DIR = 0x01,
328: FD_SRA_nWP = 0x02,
329: FD_SRA_nINDX = 0x04,
330: FD_SRA_HDSEL = 0x08,
331: FD_SRA_nTRK0 = 0x10,
332: FD_SRA_STEP = 0x20,
333: FD_SRA_nDRV2 = 0x40,
334: FD_SRA_INTPEND = 0x80,
335: };
336:
337: enum {
338: FD_SRB_MTR0 = 0x01,
339: FD_SRB_MTR1 = 0x02,
340: FD_SRB_WGATE = 0x04,
341: FD_SRB_RDATA = 0x08,
342: FD_SRB_WDATA = 0x10,
343: FD_SRB_DR0 = 0x20,
344: };
345:
346: enum {
347: #if MAX_FD == 4
348: FD_DOR_SELMASK = 0x03,
349: #else
350: FD_DOR_SELMASK = 0x01,
351: #endif
352: FD_DOR_nRESET = 0x04,
353: FD_DOR_DMAEN = 0x08,
354: FD_DOR_MOTEN0 = 0x10,
355: FD_DOR_MOTEN1 = 0x20,
356: FD_DOR_MOTEN2 = 0x40,
357: FD_DOR_MOTEN3 = 0x80,
358: };
359:
360: enum {
361: #if MAX_FD == 4
362: FD_TDR_BOOTSEL = 0x0c,
363: #else
364: FD_TDR_BOOTSEL = 0x04,
365: #endif
366: };
367:
368: enum {
369: FD_DSR_DRATEMASK= 0x03,
370: FD_DSR_PWRDOWN = 0x40,
371: FD_DSR_SWRESET = 0x80,
372: };
373:
374: enum {
375: FD_MSR_DRV0BUSY = 0x01,
376: FD_MSR_DRV1BUSY = 0x02,
377: FD_MSR_DRV2BUSY = 0x04,
378: FD_MSR_DRV3BUSY = 0x08,
379: FD_MSR_CMDBUSY = 0x10,
380: FD_MSR_NONDMA = 0x20,
381: FD_MSR_DIO = 0x40,
382: FD_MSR_RQM = 0x80,
383: };
384:
385: enum {
386: FD_DIR_DSKCHG = 0x80,
1.1 root 387: };
388:
389: #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
390: #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
391: #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
392:
1.1.1.10 root 393: struct FDCtrl {
1.1.1.14! root 394: MemoryRegion iomem;
1.1.1.3 root 395: qemu_irq irq;
1.1 root 396: /* Controller state */
397: QEMUTimer *result_timer;
1.1.1.13 root 398: int dma_chann;
399: /* Controller's identification */
400: uint8_t version;
401: /* HW */
1.1.1.4 root 402: uint8_t sra;
403: uint8_t srb;
404: uint8_t dor;
1.1.1.6 root 405: uint8_t dor_vmstate; /* only used as temp during vmstate */
1.1.1.4 root 406: uint8_t tdr;
407: uint8_t dsr;
408: uint8_t msr;
1.1 root 409: uint8_t cur_drv;
1.1.1.4 root 410: uint8_t status0;
411: uint8_t status1;
412: uint8_t status2;
1.1 root 413: /* Command FIFO */
1.1.1.3 root 414: uint8_t *fifo;
1.1.1.6 root 415: int32_t fifo_size;
1.1 root 416: uint32_t data_pos;
417: uint32_t data_len;
418: uint8_t data_state;
419: uint8_t data_dir;
420: uint8_t eot; /* last wanted sector */
421: /* States kept only to be returned back */
422: /* precompensation */
423: uint8_t precomp_trk;
424: uint8_t config;
425: uint8_t lock;
426: /* Power down config (also with status regB access mode */
427: uint8_t pwrd;
428: /* Floppy drives */
1.1.1.6 root 429: uint8_t num_floppies;
1.1.1.13 root 430: /* Sun4m quirks? */
431: int sun4m;
1.1.1.10 root 432: FDrive drives[MAX_FD];
1.1.1.4 root 433: int reset_sensei;
1.1.1.14! root 434: uint32_t check_media_rate;
1.1.1.13 root 435: /* Timers state */
436: uint8_t timer0;
437: uint8_t timer1;
1.1 root 438: };
439:
1.1.1.10 root 440: typedef struct FDCtrlSysBus {
1.1.1.6 root 441: SysBusDevice busdev;
1.1.1.10 root 442: struct FDCtrl state;
443: } FDCtrlSysBus;
1.1.1.6 root 444:
1.1.1.10 root 445: typedef struct FDCtrlISABus {
1.1.1.6 root 446: ISADevice busdev;
1.1.1.14! root 447: uint32_t iobase;
! 448: uint32_t irq;
! 449: uint32_t dma;
1.1.1.10 root 450: struct FDCtrl state;
1.1.1.11 root 451: int32_t bootindexA;
452: int32_t bootindexB;
1.1.1.10 root 453: } FDCtrlISABus;
1.1.1.6 root 454:
1.1 root 455: static uint32_t fdctrl_read (void *opaque, uint32_t reg)
456: {
1.1.1.10 root 457: FDCtrl *fdctrl = opaque;
1.1 root 458: uint32_t retval;
459:
1.1.1.13 root 460: reg &= 7;
1.1.1.4 root 461: switch (reg) {
462: case FD_REG_SRA:
463: retval = fdctrl_read_statusA(fdctrl);
1.1.1.3 root 464: break;
1.1.1.4 root 465: case FD_REG_SRB:
1.1.1.3 root 466: retval = fdctrl_read_statusB(fdctrl);
467: break;
1.1.1.4 root 468: case FD_REG_DOR:
1.1.1.3 root 469: retval = fdctrl_read_dor(fdctrl);
470: break;
1.1.1.4 root 471: case FD_REG_TDR:
1.1 root 472: retval = fdctrl_read_tape(fdctrl);
1.1.1.3 root 473: break;
1.1.1.4 root 474: case FD_REG_MSR:
1.1 root 475: retval = fdctrl_read_main_status(fdctrl);
1.1.1.3 root 476: break;
1.1.1.4 root 477: case FD_REG_FIFO:
1.1 root 478: retval = fdctrl_read_data(fdctrl);
1.1.1.3 root 479: break;
1.1.1.4 root 480: case FD_REG_DIR:
1.1 root 481: retval = fdctrl_read_dir(fdctrl);
1.1.1.3 root 482: break;
1.1 root 483: default:
1.1.1.3 root 484: retval = (uint32_t)(-1);
485: break;
1.1 root 486: }
487: FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
488:
489: return retval;
490: }
491:
492: static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
493: {
1.1.1.10 root 494: FDCtrl *fdctrl = opaque;
1.1 root 495:
496: FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
497:
1.1.1.13 root 498: reg &= 7;
1.1.1.4 root 499: switch (reg) {
500: case FD_REG_DOR:
1.1.1.3 root 501: fdctrl_write_dor(fdctrl, value);
502: break;
1.1.1.4 root 503: case FD_REG_TDR:
1.1 root 504: fdctrl_write_tape(fdctrl, value);
1.1.1.3 root 505: break;
1.1.1.4 root 506: case FD_REG_DSR:
1.1 root 507: fdctrl_write_rate(fdctrl, value);
1.1.1.3 root 508: break;
1.1.1.4 root 509: case FD_REG_FIFO:
1.1 root 510: fdctrl_write_data(fdctrl, value);
1.1.1.3 root 511: break;
1.1.1.14! root 512: case FD_REG_CCR:
! 513: fdctrl_write_ccr(fdctrl, value);
! 514: break;
1.1 root 515: default:
1.1.1.3 root 516: break;
1.1 root 517: }
518: }
519:
1.1.1.14! root 520: static uint64_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg,
! 521: unsigned ize)
1.1 root 522: {
1.1.1.3 root 523: return fdctrl_read(opaque, (uint32_t)reg);
1.1 root 524: }
525:
1.1.1.14! root 526: static void fdctrl_write_mem (void *opaque, target_phys_addr_t reg,
! 527: uint64_t value, unsigned size)
1.1 root 528: {
1.1.1.3 root 529: fdctrl_write(opaque, (uint32_t)reg, value);
1.1 root 530: }
531:
1.1.1.14! root 532: static const MemoryRegionOps fdctrl_mem_ops = {
! 533: .read = fdctrl_read_mem,
! 534: .write = fdctrl_write_mem,
! 535: .endianness = DEVICE_NATIVE_ENDIAN,
1.1 root 536: };
537:
1.1.1.14! root 538: static const MemoryRegionOps fdctrl_mem_strict_ops = {
! 539: .read = fdctrl_read_mem,
! 540: .write = fdctrl_write_mem,
! 541: .endianness = DEVICE_NATIVE_ENDIAN,
! 542: .valid = {
! 543: .min_access_size = 1,
! 544: .max_access_size = 1,
! 545: },
1.1.1.3 root 546: };
547:
1.1.1.13 root 548: static bool fdrive_media_changed_needed(void *opaque)
549: {
550: FDrive *drive = opaque;
551:
552: return (drive->bs != NULL && drive->media_changed != 1);
553: }
554:
555: static const VMStateDescription vmstate_fdrive_media_changed = {
556: .name = "fdrive/media_changed",
557: .version_id = 1,
558: .minimum_version_id = 1,
559: .minimum_version_id_old = 1,
560: .fields = (VMStateField[]) {
561: VMSTATE_UINT8(media_changed, FDrive),
562: VMSTATE_END_OF_LIST()
563: }
564: };
565:
1.1.1.14! root 566: static bool fdrive_media_rate_needed(void *opaque)
! 567: {
! 568: FDrive *drive = opaque;
! 569:
! 570: return drive->fdctrl->check_media_rate;
! 571: }
! 572:
! 573: static const VMStateDescription vmstate_fdrive_media_rate = {
! 574: .name = "fdrive/media_rate",
! 575: .version_id = 1,
! 576: .minimum_version_id = 1,
! 577: .minimum_version_id_old = 1,
! 578: .fields = (VMStateField[]) {
! 579: VMSTATE_UINT8(media_rate, FDrive),
! 580: VMSTATE_END_OF_LIST()
! 581: }
! 582: };
! 583:
1.1.1.6 root 584: static const VMStateDescription vmstate_fdrive = {
585: .name = "fdrive",
586: .version_id = 1,
587: .minimum_version_id = 1,
588: .minimum_version_id_old = 1,
1.1.1.13 root 589: .fields = (VMStateField[]) {
1.1.1.10 root 590: VMSTATE_UINT8(head, FDrive),
591: VMSTATE_UINT8(track, FDrive),
592: VMSTATE_UINT8(sect, FDrive),
1.1.1.6 root 593: VMSTATE_END_OF_LIST()
1.1.1.13 root 594: },
595: .subsections = (VMStateSubsection[]) {
596: {
597: .vmsd = &vmstate_fdrive_media_changed,
598: .needed = &fdrive_media_changed_needed,
599: } , {
1.1.1.14! root 600: .vmsd = &vmstate_fdrive_media_rate,
! 601: .needed = &fdrive_media_rate_needed,
! 602: } , {
1.1.1.13 root 603: /* empty */
604: }
1.1.1.6 root 605: }
606: };
1.1.1.3 root 607:
1.1.1.6 root 608: static void fdc_pre_save(void *opaque)
1.1.1.3 root 609: {
1.1.1.10 root 610: FDCtrl *s = opaque;
1.1.1.4 root 611:
1.1.1.6 root 612: s->dor_vmstate = s->dor | GET_CUR_DRV(s);
1.1.1.3 root 613: }
614:
1.1.1.6 root 615: static int fdc_post_load(void *opaque, int version_id)
1.1.1.3 root 616: {
1.1.1.10 root 617: FDCtrl *s = opaque;
1.1.1.3 root 618:
1.1.1.6 root 619: SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK);
620: s->dor = s->dor_vmstate & ~FD_DOR_SELMASK;
1.1.1.3 root 621: return 0;
622: }
623:
1.1.1.6 root 624: static const VMStateDescription vmstate_fdc = {
625: .name = "fdc",
626: .version_id = 2,
627: .minimum_version_id = 2,
628: .minimum_version_id_old = 2,
629: .pre_save = fdc_pre_save,
630: .post_load = fdc_post_load,
631: .fields = (VMStateField []) {
632: /* Controller State */
1.1.1.10 root 633: VMSTATE_UINT8(sra, FDCtrl),
634: VMSTATE_UINT8(srb, FDCtrl),
635: VMSTATE_UINT8(dor_vmstate, FDCtrl),
636: VMSTATE_UINT8(tdr, FDCtrl),
637: VMSTATE_UINT8(dsr, FDCtrl),
638: VMSTATE_UINT8(msr, FDCtrl),
639: VMSTATE_UINT8(status0, FDCtrl),
640: VMSTATE_UINT8(status1, FDCtrl),
641: VMSTATE_UINT8(status2, FDCtrl),
1.1.1.6 root 642: /* Command FIFO */
1.1.1.10 root 643: VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8,
644: uint8_t),
645: VMSTATE_UINT32(data_pos, FDCtrl),
646: VMSTATE_UINT32(data_len, FDCtrl),
647: VMSTATE_UINT8(data_state, FDCtrl),
648: VMSTATE_UINT8(data_dir, FDCtrl),
649: VMSTATE_UINT8(eot, FDCtrl),
1.1.1.6 root 650: /* States kept only to be returned back */
1.1.1.10 root 651: VMSTATE_UINT8(timer0, FDCtrl),
652: VMSTATE_UINT8(timer1, FDCtrl),
653: VMSTATE_UINT8(precomp_trk, FDCtrl),
654: VMSTATE_UINT8(config, FDCtrl),
655: VMSTATE_UINT8(lock, FDCtrl),
656: VMSTATE_UINT8(pwrd, FDCtrl),
657: VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl),
658: VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1,
659: vmstate_fdrive, FDrive),
1.1.1.6 root 660: VMSTATE_END_OF_LIST()
1.1.1.4 root 661: }
1.1.1.6 root 662: };
1.1.1.3 root 663:
1.1.1.6 root 664: static void fdctrl_external_reset_sysbus(DeviceState *d)
665: {
1.1.1.10 root 666: FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
667: FDCtrl *s = &sys->state;
1.1.1.6 root 668:
669: fdctrl_reset(s, 0);
1.1.1.3 root 670: }
671:
1.1.1.6 root 672: static void fdctrl_external_reset_isa(DeviceState *d)
1.1.1.3 root 673: {
1.1.1.10 root 674: FDCtrlISABus *isa = container_of(d, FDCtrlISABus, busdev.qdev);
675: FDCtrl *s = &isa->state;
1.1.1.3 root 676:
677: fdctrl_reset(s, 0);
678: }
679:
1.1.1.4 root 680: static void fdctrl_handle_tc(void *opaque, int irq, int level)
1.1.1.3 root 681: {
1.1.1.10 root 682: //FDCtrl *s = opaque;
1.1.1.3 root 683:
1.1.1.4 root 684: if (level) {
685: // XXX
686: FLOPPY_DPRINTF("TC pulsed\n");
1.1 root 687: }
1.1.1.3 root 688: }
689:
1.1 root 690: /* Change IRQ state */
1.1.1.10 root 691: static void fdctrl_reset_irq(FDCtrl *fdctrl)
1.1 root 692: {
1.1.1.4 root 693: if (!(fdctrl->sra & FD_SRA_INTPEND))
694: return;
1.1 root 695: FLOPPY_DPRINTF("Reset interrupt\n");
1.1.1.3 root 696: qemu_set_irq(fdctrl->irq, 0);
1.1.1.4 root 697: fdctrl->sra &= ~FD_SRA_INTPEND;
1.1 root 698: }
699:
1.1.1.10 root 700: static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0)
1.1 root 701: {
1.1.1.4 root 702: /* Sparc mutation */
703: if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) {
704: /* XXX: not sure */
705: fdctrl->msr &= ~FD_MSR_CMDBUSY;
706: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
707: fdctrl->status0 = status0;
1.1.1.3 root 708: return;
1.1 root 709: }
1.1.1.4 root 710: if (!(fdctrl->sra & FD_SRA_INTPEND)) {
1.1.1.3 root 711: qemu_set_irq(fdctrl->irq, 1);
1.1.1.4 root 712: fdctrl->sra |= FD_SRA_INTPEND;
1.1 root 713: }
1.1.1.14! root 714: if (status0 & FD_SR0_SEEK) {
! 715: FDrive *cur_drv;
! 716: /* A seek clears the disk change line (if a disk is inserted) */
! 717: cur_drv = get_cur_drv(fdctrl);
! 718: if (cur_drv->bs != NULL && bdrv_is_inserted(cur_drv->bs)) {
! 719: cur_drv->media_changed = 0;
! 720: }
! 721: }
! 722:
1.1.1.4 root 723: fdctrl->reset_sensei = 0;
724: fdctrl->status0 = status0;
725: FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
1.1 root 726: }
727:
728: /* Reset controller */
1.1.1.10 root 729: static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
1.1 root 730: {
731: int i;
732:
733: FLOPPY_DPRINTF("reset controller\n");
734: fdctrl_reset_irq(fdctrl);
735: /* Initialise controller */
1.1.1.4 root 736: fdctrl->sra = 0;
737: fdctrl->srb = 0xc0;
738: if (!fdctrl->drives[1].bs)
739: fdctrl->sra |= FD_SRA_nDRV2;
1.1 root 740: fdctrl->cur_drv = 0;
1.1.1.4 root 741: fdctrl->dor = FD_DOR_nRESET;
742: fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0;
743: fdctrl->msr = FD_MSR_RQM;
1.1 root 744: /* FIFO state */
745: fdctrl->data_pos = 0;
746: fdctrl->data_len = 0;
1.1.1.4 root 747: fdctrl->data_state = 0;
1.1 root 748: fdctrl->data_dir = FD_DIR_WRITE;
749: for (i = 0; i < MAX_FD; i++)
1.1.1.4 root 750: fd_recalibrate(&fdctrl->drives[i]);
1.1 root 751: fdctrl_reset_fifo(fdctrl);
1.1.1.4 root 752: if (do_irq) {
753: fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
754: fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
755: }
1.1 root 756: }
757:
1.1.1.10 root 758: static inline FDrive *drv0(FDCtrl *fdctrl)
1.1 root 759: {
1.1.1.4 root 760: return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
1.1 root 761: }
762:
1.1.1.10 root 763: static inline FDrive *drv1(FDCtrl *fdctrl)
1.1 root 764: {
1.1.1.4 root 765: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
766: return &fdctrl->drives[1];
767: else
768: return &fdctrl->drives[0];
769: }
770:
771: #if MAX_FD == 4
1.1.1.10 root 772: static inline FDrive *drv2(FDCtrl *fdctrl)
1.1.1.4 root 773: {
774: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
775: return &fdctrl->drives[2];
776: else
777: return &fdctrl->drives[1];
778: }
779:
1.1.1.10 root 780: static inline FDrive *drv3(FDCtrl *fdctrl)
1.1.1.4 root 781: {
782: if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
783: return &fdctrl->drives[3];
784: else
785: return &fdctrl->drives[2];
1.1 root 786: }
1.1.1.4 root 787: #endif
1.1 root 788:
1.1.1.10 root 789: static FDrive *get_cur_drv(FDCtrl *fdctrl)
1.1 root 790: {
1.1.1.4 root 791: switch (fdctrl->cur_drv) {
792: case 0: return drv0(fdctrl);
793: case 1: return drv1(fdctrl);
794: #if MAX_FD == 4
795: case 2: return drv2(fdctrl);
796: case 3: return drv3(fdctrl);
797: #endif
798: default: return NULL;
799: }
800: }
801:
802: /* Status A register : 0x00 (read-only) */
1.1.1.10 root 803: static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl)
1.1.1.4 root 804: {
805: uint32_t retval = fdctrl->sra;
806:
807: FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
808:
809: return retval;
1.1 root 810: }
811:
812: /* Status B register : 0x01 (read-only) */
1.1.1.10 root 813: static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl)
1.1 root 814: {
1.1.1.4 root 815: uint32_t retval = fdctrl->srb;
816:
817: FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
818:
819: return retval;
1.1 root 820: }
821:
822: /* Digital output register : 0x02 */
1.1.1.10 root 823: static uint32_t fdctrl_read_dor(FDCtrl *fdctrl)
1.1 root 824: {
1.1.1.4 root 825: uint32_t retval = fdctrl->dor;
1.1 root 826:
827: /* Selected drive */
828: retval |= fdctrl->cur_drv;
829: FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
830:
831: return retval;
832: }
833:
1.1.1.10 root 834: static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value)
1.1 root 835: {
836: FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
1.1.1.4 root 837:
838: /* Motors */
839: if (value & FD_DOR_MOTEN0)
840: fdctrl->srb |= FD_SRB_MTR0;
1.1 root 841: else
1.1.1.4 root 842: fdctrl->srb &= ~FD_SRB_MTR0;
843: if (value & FD_DOR_MOTEN1)
844: fdctrl->srb |= FD_SRB_MTR1;
1.1 root 845: else
1.1.1.4 root 846: fdctrl->srb &= ~FD_SRB_MTR1;
847:
848: /* Drive */
849: if (value & 1)
850: fdctrl->srb |= FD_SRB_DR0;
851: else
852: fdctrl->srb &= ~FD_SRB_DR0;
853:
1.1 root 854: /* Reset */
1.1.1.4 root 855: if (!(value & FD_DOR_nRESET)) {
856: if (fdctrl->dor & FD_DOR_nRESET) {
1.1 root 857: FLOPPY_DPRINTF("controller enter RESET state\n");
858: }
859: } else {
1.1.1.4 root 860: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 861: FLOPPY_DPRINTF("controller out of RESET state\n");
862: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 863: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1.1 root 864: }
865: }
866: /* Selected drive */
1.1.1.4 root 867: fdctrl->cur_drv = value & FD_DOR_SELMASK;
868:
869: fdctrl->dor = value;
1.1 root 870: }
871:
872: /* Tape drive register : 0x03 */
1.1.1.10 root 873: static uint32_t fdctrl_read_tape(FDCtrl *fdctrl)
1.1 root 874: {
1.1.1.4 root 875: uint32_t retval = fdctrl->tdr;
1.1 root 876:
877: FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
878:
879: return retval;
880: }
881:
1.1.1.10 root 882: static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value)
1.1 root 883: {
884: /* Reset mode */
1.1.1.4 root 885: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1 root 886: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
887: return;
888: }
889: FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
890: /* Disk boot selection indicator */
1.1.1.4 root 891: fdctrl->tdr = value & FD_TDR_BOOTSEL;
1.1 root 892: /* Tape indicators: never allow */
893: }
894:
895: /* Main status register : 0x04 (read) */
1.1.1.10 root 896: static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl)
1.1 root 897: {
1.1.1.4 root 898: uint32_t retval = fdctrl->msr;
899:
900: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
901: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 902:
1.1.1.7 root 903: /* Sparc mutation */
904: if (fdctrl->sun4m) {
905: retval |= FD_MSR_DIO;
906: fdctrl_reset_irq(fdctrl);
907: };
908:
1.1 root 909: FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
910:
911: return retval;
912: }
913:
914: /* Data select rate register : 0x04 (write) */
1.1.1.10 root 915: static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
1.1 root 916: {
917: /* Reset mode */
1.1.1.4 root 918: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1.1.1.3 root 919: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
920: return;
921: }
1.1 root 922: FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
923: /* Reset: autoclear */
1.1.1.4 root 924: if (value & FD_DSR_SWRESET) {
925: fdctrl->dor &= ~FD_DOR_nRESET;
1.1 root 926: fdctrl_reset(fdctrl, 1);
1.1.1.4 root 927: fdctrl->dor |= FD_DOR_nRESET;
1.1 root 928: }
1.1.1.4 root 929: if (value & FD_DSR_PWRDOWN) {
1.1 root 930: fdctrl_reset(fdctrl, 1);
931: }
1.1.1.4 root 932: fdctrl->dsr = value;
1.1 root 933: }
934:
1.1.1.14! root 935: /* Configuration control register: 0x07 (write) */
! 936: static void fdctrl_write_ccr(FDCtrl *fdctrl, uint32_t value)
1.1.1.2 root 937: {
1.1.1.14! root 938: /* Reset mode */
! 939: if (!(fdctrl->dor & FD_DOR_nRESET)) {
! 940: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
! 941: return;
1.1.1.2 root 942: }
1.1.1.14! root 943: FLOPPY_DPRINTF("configuration control register set to 0x%02x\n", value);
! 944:
! 945: /* Only the rate selection bits used in AT mode, and we
! 946: * store those in the DSR.
! 947: */
! 948: fdctrl->dsr = (fdctrl->dsr & ~FD_DSR_DRATEMASK) |
! 949: (value & FD_DSR_DRATEMASK);
! 950: }
! 951:
! 952: static int fdctrl_media_changed(FDrive *drv)
! 953: {
! 954: return drv->media_changed;
1.1.1.2 root 955: }
956:
1.1 root 957: /* Digital input register : 0x07 (read-only) */
1.1.1.10 root 958: static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
1.1 root 959: {
960: uint32_t retval = 0;
961:
1.1.1.14! root 962: if (fdctrl_media_changed(get_cur_drv(fdctrl))) {
1.1.1.4 root 963: retval |= FD_DIR_DSKCHG;
1.1.1.14! root 964: }
1.1.1.10 root 965: if (retval != 0) {
1.1 root 966: FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
1.1.1.10 root 967: }
1.1 root 968:
969: return retval;
970: }
971:
972: /* FIFO state control */
1.1.1.10 root 973: static void fdctrl_reset_fifo(FDCtrl *fdctrl)
1.1 root 974: {
975: fdctrl->data_dir = FD_DIR_WRITE;
976: fdctrl->data_pos = 0;
1.1.1.4 root 977: fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
1.1 root 978: }
979:
980: /* Set FIFO status for the host to read */
1.1.1.10 root 981: static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len, int do_irq)
1.1 root 982: {
983: fdctrl->data_dir = FD_DIR_READ;
984: fdctrl->data_len = fifo_len;
985: fdctrl->data_pos = 0;
1.1.1.4 root 986: fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
1.1 root 987: if (do_irq)
988: fdctrl_raise_irq(fdctrl, 0x00);
989: }
990:
991: /* Set an error: unimplemented/unknown command */
1.1.1.10 root 992: static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction)
1.1 root 993: {
1.1.1.4 root 994: FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
995: fdctrl->fifo[0] = FD_SR0_INVCMD;
1.1 root 996: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 997: }
998:
999: /* Seek to next sector */
1.1.1.10 root 1000: static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv)
1.1.1.4 root 1001: {
1002: FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
1003: cur_drv->head, cur_drv->track, cur_drv->sect,
1004: fd_sector(cur_drv));
1005: /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
1006: error in fact */
1007: if (cur_drv->sect >= cur_drv->last_sect ||
1008: cur_drv->sect == fdctrl->eot) {
1009: cur_drv->sect = 1;
1010: if (FD_MULTI_TRACK(fdctrl->data_state)) {
1011: if (cur_drv->head == 0 &&
1012: (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
1013: cur_drv->head = 1;
1014: } else {
1015: cur_drv->head = 0;
1016: cur_drv->track++;
1017: if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
1018: return 0;
1019: }
1020: } else {
1021: cur_drv->track++;
1022: return 0;
1023: }
1024: FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
1025: cur_drv->head, cur_drv->track,
1026: cur_drv->sect, fd_sector(cur_drv));
1027: } else {
1028: cur_drv->sect++;
1029: }
1030: return 1;
1.1 root 1031: }
1032:
1033: /* Callback for transfer end (stop or abort) */
1.1.1.10 root 1034: static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0,
1035: uint8_t status1, uint8_t status2)
1.1 root 1036: {
1.1.1.10 root 1037: FDrive *cur_drv;
1.1 root 1038:
1039: cur_drv = get_cur_drv(fdctrl);
1040: FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
1041: status0, status1, status2,
1.1.1.4 root 1042: status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
1043: fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1.1 root 1044: fdctrl->fifo[1] = status1;
1045: fdctrl->fifo[2] = status2;
1046: fdctrl->fifo[3] = cur_drv->track;
1047: fdctrl->fifo[4] = cur_drv->head;
1048: fdctrl->fifo[5] = cur_drv->sect;
1049: fdctrl->fifo[6] = FD_SECTOR_SC;
1050: fdctrl->data_dir = FD_DIR_READ;
1.1.1.4 root 1051: if (!(fdctrl->msr & FD_MSR_NONDMA)) {
1.1 root 1052: DMA_release_DREQ(fdctrl->dma_chann);
1053: }
1.1.1.4 root 1054: fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
1055: fdctrl->msr &= ~FD_MSR_NONDMA;
1.1 root 1056: fdctrl_set_fifo(fdctrl, 7, 1);
1057: }
1058:
1059: /* Prepare a data transfer (either DMA or FIFO) */
1.1.1.10 root 1060: static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
1.1 root 1061: {
1.1.1.10 root 1062: FDrive *cur_drv;
1.1 root 1063: uint8_t kh, kt, ks;
1.1.1.4 root 1064: int did_seek = 0;
1.1 root 1065:
1.1.1.4 root 1066: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1067: cur_drv = get_cur_drv(fdctrl);
1068: kt = fdctrl->fifo[2];
1069: kh = fdctrl->fifo[3];
1070: ks = fdctrl->fifo[4];
1071: FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1072: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.14! root 1073: fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
! 1074: NUM_SIDES(cur_drv)));
1.1.1.4 root 1075: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1076: case 2:
1077: /* sect too big */
1.1.1.4 root 1078: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1079: fdctrl->fifo[3] = kt;
1080: fdctrl->fifo[4] = kh;
1081: fdctrl->fifo[5] = ks;
1082: return;
1083: case 3:
1084: /* track too big */
1.1.1.4 root 1085: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1086: fdctrl->fifo[3] = kt;
1087: fdctrl->fifo[4] = kh;
1088: fdctrl->fifo[5] = ks;
1089: return;
1090: case 4:
1091: /* No seek enabled */
1.1.1.4 root 1092: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1093: fdctrl->fifo[3] = kt;
1094: fdctrl->fifo[4] = kh;
1095: fdctrl->fifo[5] = ks;
1096: return;
1097: case 1:
1098: did_seek = 1;
1099: break;
1100: default:
1101: break;
1102: }
1.1.1.4 root 1103:
1.1.1.14! root 1104: /* Check the data rate. If the programmed data rate does not match
! 1105: * the currently inserted medium, the operation has to fail. */
! 1106: if (fdctrl->check_media_rate &&
! 1107: (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
! 1108: FLOPPY_DPRINTF("data rate mismatch (fdc=%d, media=%d)\n",
! 1109: fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
! 1110: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
! 1111: fdctrl->fifo[3] = kt;
! 1112: fdctrl->fifo[4] = kh;
! 1113: fdctrl->fifo[5] = ks;
! 1114: return;
! 1115: }
! 1116:
1.1 root 1117: /* Set the FIFO state */
1118: fdctrl->data_dir = direction;
1119: fdctrl->data_pos = 0;
1.1.1.4 root 1120: fdctrl->msr |= FD_MSR_CMDBUSY;
1.1 root 1121: if (fdctrl->fifo[0] & 0x80)
1122: fdctrl->data_state |= FD_STATE_MULTI;
1123: else
1124: fdctrl->data_state &= ~FD_STATE_MULTI;
1125: if (did_seek)
1126: fdctrl->data_state |= FD_STATE_SEEK;
1127: else
1128: fdctrl->data_state &= ~FD_STATE_SEEK;
1129: if (fdctrl->fifo[5] == 00) {
1130: fdctrl->data_len = fdctrl->fifo[8];
1131: } else {
1.1.1.3 root 1132: int tmp;
1.1.1.2 root 1133: fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
1.1.1.4 root 1134: tmp = (fdctrl->fifo[6] - ks + 1);
1.1 root 1135: if (fdctrl->fifo[0] & 0x80)
1.1.1.4 root 1136: tmp += fdctrl->fifo[6];
1.1.1.3 root 1137: fdctrl->data_len *= tmp;
1.1 root 1138: }
1139: fdctrl->eot = fdctrl->fifo[6];
1.1.1.4 root 1140: if (fdctrl->dor & FD_DOR_DMAEN) {
1.1 root 1141: int dma_mode;
1142: /* DMA transfer are enabled. Check if DMA channel is well programmed */
1143: dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
1144: dma_mode = (dma_mode >> 2) & 3;
1145: FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
1.1.1.3 root 1146: dma_mode, direction,
1.1 root 1147: (128 << fdctrl->fifo[5]) *
1.1.1.3 root 1148: (cur_drv->last_sect - ks + 1), fdctrl->data_len);
1.1 root 1149: if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
1150: direction == FD_DIR_SCANH) && dma_mode == 0) ||
1151: (direction == FD_DIR_WRITE && dma_mode == 2) ||
1152: (direction == FD_DIR_READ && dma_mode == 1)) {
1153: /* No access is allowed until DMA transfer has completed */
1.1.1.4 root 1154: fdctrl->msr &= ~FD_MSR_RQM;
1.1 root 1155: /* Now, we just have to wait for the DMA controller to
1156: * recall us...
1157: */
1158: DMA_hold_DREQ(fdctrl->dma_chann);
1159: DMA_schedule(fdctrl->dma_chann);
1160: return;
1161: } else {
1.1.1.3 root 1162: FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
1.1 root 1163: }
1164: }
1165: FLOPPY_DPRINTF("start non-DMA transfer\n");
1.1.1.4 root 1166: fdctrl->msr |= FD_MSR_NONDMA;
1167: if (direction != FD_DIR_WRITE)
1168: fdctrl->msr |= FD_MSR_DIO;
1.1 root 1169: /* IO based transfer: calculate len */
1170: fdctrl_raise_irq(fdctrl, 0x00);
1171:
1172: return;
1173: }
1174:
1175: /* Prepare a transfer of deleted data */
1.1.1.10 root 1176: static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
1.1 root 1177: {
1.1.1.4 root 1178: FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
1179:
1.1 root 1180: /* We don't handle deleted data,
1181: * so we don't return *ANYTHING*
1182: */
1.1.1.4 root 1183: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1184: }
1185:
1186: /* handlers for DMA transfers */
1187: static int fdctrl_transfer_handler (void *opaque, int nchan,
1188: int dma_pos, int dma_len)
1189: {
1.1.1.10 root 1190: FDCtrl *fdctrl;
1191: FDrive *cur_drv;
1.1 root 1192: int len, start_pos, rel_pos;
1193: uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
1194:
1195: fdctrl = opaque;
1.1.1.4 root 1196: if (fdctrl->msr & FD_MSR_RQM) {
1.1 root 1197: FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
1198: return 0;
1199: }
1200: cur_drv = get_cur_drv(fdctrl);
1201: if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
1202: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1203: status2 = FD_SR2_SNS;
1.1 root 1204: if (dma_len > fdctrl->data_len)
1205: dma_len = fdctrl->data_len;
1206: if (cur_drv->bs == NULL) {
1.1.1.3 root 1207: if (fdctrl->data_dir == FD_DIR_WRITE)
1.1.1.4 root 1208: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1209: else
1.1.1.4 root 1210: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1.1.3 root 1211: len = 0;
1.1 root 1212: goto transfer_error;
1213: }
1214: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1215: for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
1216: len = dma_len - fdctrl->data_pos;
1217: if (len + rel_pos > FD_SECTOR_LEN)
1218: len = FD_SECTOR_LEN - rel_pos;
1219: FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
1220: "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
1.1.1.4 root 1221: fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
1.1 root 1222: cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
1.1.1.4 root 1223: fd_sector(cur_drv) * FD_SECTOR_LEN);
1.1 root 1224: if (fdctrl->data_dir != FD_DIR_WRITE ||
1.1.1.3 root 1225: len < FD_SECTOR_LEN || rel_pos != 0) {
1.1 root 1226: /* READ & SCAN commands and realign to a sector for WRITE */
1227: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1228: fdctrl->fifo, 1) < 0) {
1.1 root 1229: FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
1230: fd_sector(cur_drv));
1231: /* Sure, image size is too small... */
1232: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1233: }
1234: }
1.1.1.3 root 1235: switch (fdctrl->data_dir) {
1236: case FD_DIR_READ:
1237: /* READ commands */
1.1 root 1238: DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
1239: fdctrl->data_pos, len);
1.1.1.3 root 1240: break;
1241: case FD_DIR_WRITE:
1.1 root 1242: /* WRITE commands */
1.1.1.14! root 1243: if (cur_drv->ro) {
! 1244: /* Handle readonly medium early, no need to do DMA, touch the
! 1245: * LED or attempt any writes. A real floppy doesn't attempt
! 1246: * to write to readonly media either. */
! 1247: fdctrl_stop_transfer(fdctrl,
! 1248: FD_SR0_ABNTERM | FD_SR0_SEEK, FD_SR1_NW,
! 1249: 0x00);
! 1250: goto transfer_error;
! 1251: }
! 1252:
1.1 root 1253: DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
1254: fdctrl->data_pos, len);
1255: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
1.1.1.3 root 1256: fdctrl->fifo, 1) < 0) {
1.1.1.4 root 1257: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1258: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1259: goto transfer_error;
1260: }
1.1.1.3 root 1261: break;
1262: default:
1263: /* SCAN commands */
1.1 root 1264: {
1.1.1.3 root 1265: uint8_t tmpbuf[FD_SECTOR_LEN];
1.1 root 1266: int ret;
1267: DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
1268: ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
1269: if (ret == 0) {
1.1.1.4 root 1270: status2 = FD_SR2_SEH;
1.1 root 1271: goto end_transfer;
1272: }
1273: if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
1274: (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
1275: status2 = 0x00;
1276: goto end_transfer;
1277: }
1278: }
1.1.1.3 root 1279: break;
1.1 root 1280: }
1.1.1.3 root 1281: fdctrl->data_pos += len;
1282: rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
1.1 root 1283: if (rel_pos == 0) {
1284: /* Seek to next sector */
1.1.1.4 root 1285: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
1286: break;
1.1 root 1287: }
1288: }
1.1.1.3 root 1289: end_transfer:
1.1 root 1290: len = fdctrl->data_pos - start_pos;
1291: FLOPPY_DPRINTF("end transfer %d %d %d\n",
1.1.1.3 root 1292: fdctrl->data_pos, len, fdctrl->data_len);
1.1 root 1293: if (fdctrl->data_dir == FD_DIR_SCANE ||
1294: fdctrl->data_dir == FD_DIR_SCANL ||
1295: fdctrl->data_dir == FD_DIR_SCANH)
1.1.1.4 root 1296: status2 = FD_SR2_SEH;
1.1 root 1297: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1298: status0 |= FD_SR0_SEEK;
1.1 root 1299: fdctrl->data_len -= len;
1300: fdctrl_stop_transfer(fdctrl, status0, status1, status2);
1.1.1.3 root 1301: transfer_error:
1.1 root 1302:
1303: return len;
1304: }
1305:
1306: /* Data register : 0x05 */
1.1.1.10 root 1307: static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
1.1 root 1308: {
1.1.1.10 root 1309: FDrive *cur_drv;
1.1 root 1310: uint32_t retval = 0;
1.1.1.4 root 1311: int pos;
1.1 root 1312:
1313: cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1314: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1315: if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
1316: FLOPPY_ERROR("controller not ready for reading\n");
1.1 root 1317: return 0;
1318: }
1319: pos = fdctrl->data_pos;
1.1.1.4 root 1320: if (fdctrl->msr & FD_MSR_NONDMA) {
1.1 root 1321: pos %= FD_SECTOR_LEN;
1322: if (pos == 0) {
1.1.1.4 root 1323: if (fdctrl->data_pos != 0)
1324: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1325: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1326: fd_sector(cur_drv));
1327: return 0;
1328: }
1329: if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1330: FLOPPY_DPRINTF("error getting sector %d\n",
1331: fd_sector(cur_drv));
1332: /* Sure, image size is too small... */
1333: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1334: }
1.1 root 1335: }
1336: }
1337: retval = fdctrl->fifo[pos];
1338: if (++fdctrl->data_pos == fdctrl->data_len) {
1339: fdctrl->data_pos = 0;
1340: /* Switch from transfer mode to status mode
1341: * then from status mode to command mode
1342: */
1.1.1.4 root 1343: if (fdctrl->msr & FD_MSR_NONDMA) {
1344: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1345: } else {
1346: fdctrl_reset_fifo(fdctrl);
1347: fdctrl_reset_irq(fdctrl);
1348: }
1349: }
1350: FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
1351:
1352: return retval;
1353: }
1354:
1.1.1.10 root 1355: static void fdctrl_format_sector(FDCtrl *fdctrl)
1.1 root 1356: {
1.1.1.10 root 1357: FDrive *cur_drv;
1.1 root 1358: uint8_t kh, kt, ks;
1359:
1.1.1.4 root 1360: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1.1 root 1361: cur_drv = get_cur_drv(fdctrl);
1362: kt = fdctrl->fifo[6];
1363: kh = fdctrl->fifo[7];
1364: ks = fdctrl->fifo[8];
1365: FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
1.1.1.4 root 1366: GET_CUR_DRV(fdctrl), kh, kt, ks,
1.1.1.14! root 1367: fd_sector_calc(kh, kt, ks, cur_drv->last_sect,
! 1368: NUM_SIDES(cur_drv)));
1.1.1.4 root 1369: switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
1.1 root 1370: case 2:
1371: /* sect too big */
1.1.1.4 root 1372: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1373: fdctrl->fifo[3] = kt;
1374: fdctrl->fifo[4] = kh;
1375: fdctrl->fifo[5] = ks;
1376: return;
1377: case 3:
1378: /* track too big */
1.1.1.4 root 1379: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
1.1 root 1380: fdctrl->fifo[3] = kt;
1381: fdctrl->fifo[4] = kh;
1382: fdctrl->fifo[5] = ks;
1383: return;
1384: case 4:
1385: /* No seek enabled */
1.1.1.4 root 1386: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
1.1 root 1387: fdctrl->fifo[3] = kt;
1388: fdctrl->fifo[4] = kh;
1389: fdctrl->fifo[5] = ks;
1390: return;
1391: case 1:
1392: fdctrl->data_state |= FD_STATE_SEEK;
1393: break;
1394: default:
1395: break;
1396: }
1397: memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
1398: if (cur_drv->bs == NULL ||
1399: bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1.1.1.3 root 1400: FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
1.1.1.4 root 1401: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
1.1 root 1402: } else {
1.1.1.3 root 1403: if (cur_drv->sect == cur_drv->last_sect) {
1404: fdctrl->data_state &= ~FD_STATE_FORMAT;
1405: /* Last sector done */
1406: if (FD_DID_SEEK(fdctrl->data_state))
1.1.1.4 root 1407: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1.1.1.3 root 1408: else
1409: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1410: } else {
1411: /* More to do */
1412: fdctrl->data_pos = 0;
1413: fdctrl->data_len = 4;
1414: }
1.1 root 1415: }
1416: }
1417:
1.1.1.10 root 1418: static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
1.1 root 1419: {
1.1.1.4 root 1420: fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
1421: fdctrl->fifo[0] = fdctrl->lock << 4;
1.1.1.14! root 1422: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1423: }
1.1 root 1424:
1.1.1.10 root 1425: static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1426: {
1.1.1.10 root 1427: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1428:
1429: /* Drives position */
1430: fdctrl->fifo[0] = drv0(fdctrl)->track;
1431: fdctrl->fifo[1] = drv1(fdctrl)->track;
1432: #if MAX_FD == 4
1433: fdctrl->fifo[2] = drv2(fdctrl)->track;
1434: fdctrl->fifo[3] = drv3(fdctrl)->track;
1.1 root 1435: #else
1.1.1.4 root 1436: fdctrl->fifo[2] = 0;
1437: fdctrl->fifo[3] = 0;
1.1 root 1438: #endif
1.1.1.4 root 1439: /* timers */
1440: fdctrl->fifo[4] = fdctrl->timer0;
1441: fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
1442: fdctrl->fifo[6] = cur_drv->last_sect;
1443: fdctrl->fifo[7] = (fdctrl->lock << 7) |
1444: (cur_drv->perpendicular << 2);
1445: fdctrl->fifo[8] = fdctrl->config;
1446: fdctrl->fifo[9] = fdctrl->precomp_trk;
1447: fdctrl_set_fifo(fdctrl, 10, 0);
1448: }
1449:
1.1.1.10 root 1450: static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1451: {
1452: /* Controller's version */
1453: fdctrl->fifo[0] = fdctrl->version;
1.1.1.14! root 1454: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1455: }
1456:
1.1.1.10 root 1457: static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1458: {
1459: fdctrl->fifo[0] = 0x41; /* Stepping 1 */
1460: fdctrl_set_fifo(fdctrl, 1, 0);
1461: }
1462:
1.1.1.10 root 1463: static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1464: {
1.1.1.10 root 1465: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1466:
1467: /* Drives position */
1468: drv0(fdctrl)->track = fdctrl->fifo[3];
1469: drv1(fdctrl)->track = fdctrl->fifo[4];
1470: #if MAX_FD == 4
1471: drv2(fdctrl)->track = fdctrl->fifo[5];
1472: drv3(fdctrl)->track = fdctrl->fifo[6];
1473: #endif
1474: /* timers */
1475: fdctrl->timer0 = fdctrl->fifo[7];
1476: fdctrl->timer1 = fdctrl->fifo[8];
1477: cur_drv->last_sect = fdctrl->fifo[9];
1478: fdctrl->lock = fdctrl->fifo[10] >> 7;
1479: cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
1480: fdctrl->config = fdctrl->fifo[11];
1481: fdctrl->precomp_trk = fdctrl->fifo[12];
1482: fdctrl->pwrd = fdctrl->fifo[13];
1483: fdctrl_reset_fifo(fdctrl);
1484: }
1485:
1.1.1.10 root 1486: static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1487: {
1.1.1.10 root 1488: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1489:
1490: fdctrl->fifo[0] = 0;
1491: fdctrl->fifo[1] = 0;
1492: /* Drives position */
1493: fdctrl->fifo[2] = drv0(fdctrl)->track;
1494: fdctrl->fifo[3] = drv1(fdctrl)->track;
1495: #if MAX_FD == 4
1496: fdctrl->fifo[4] = drv2(fdctrl)->track;
1497: fdctrl->fifo[5] = drv3(fdctrl)->track;
1498: #else
1499: fdctrl->fifo[4] = 0;
1500: fdctrl->fifo[5] = 0;
1501: #endif
1502: /* timers */
1503: fdctrl->fifo[6] = fdctrl->timer0;
1504: fdctrl->fifo[7] = fdctrl->timer1;
1505: fdctrl->fifo[8] = cur_drv->last_sect;
1506: fdctrl->fifo[9] = (fdctrl->lock << 7) |
1507: (cur_drv->perpendicular << 2);
1508: fdctrl->fifo[10] = fdctrl->config;
1509: fdctrl->fifo[11] = fdctrl->precomp_trk;
1510: fdctrl->fifo[12] = fdctrl->pwrd;
1511: fdctrl->fifo[13] = 0;
1512: fdctrl->fifo[14] = 0;
1.1.1.14! root 1513: fdctrl_set_fifo(fdctrl, 15, 0);
1.1.1.4 root 1514: }
1515:
1.1.1.10 root 1516: static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1517: {
1.1.1.10 root 1518: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1519:
1520: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1521: qemu_mod_timer(fdctrl->result_timer,
1.1.1.12 root 1522: qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() / 50));
1.1.1.4 root 1523: }
1524:
1.1.1.10 root 1525: static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1526: {
1.1.1.10 root 1527: FDrive *cur_drv;
1.1.1.4 root 1528:
1529: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1530: cur_drv = get_cur_drv(fdctrl);
1531: fdctrl->data_state |= FD_STATE_FORMAT;
1532: if (fdctrl->fifo[0] & 0x80)
1533: fdctrl->data_state |= FD_STATE_MULTI;
1534: else
1535: fdctrl->data_state &= ~FD_STATE_MULTI;
1536: fdctrl->data_state &= ~FD_STATE_SEEK;
1537: cur_drv->bps =
1538: fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
1539: #if 0
1540: cur_drv->last_sect =
1541: cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
1542: fdctrl->fifo[3] / 2;
1543: #else
1544: cur_drv->last_sect = fdctrl->fifo[3];
1545: #endif
1546: /* TODO: implement format using DMA expected by the Bochs BIOS
1547: * and Linux fdformat (read 3 bytes per sector via DMA and fill
1548: * the sector with the specified fill byte
1549: */
1550: fdctrl->data_state &= ~FD_STATE_FORMAT;
1551: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
1552: }
1553:
1.1.1.10 root 1554: static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1555: {
1556: fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
1557: fdctrl->timer1 = fdctrl->fifo[2] >> 1;
1558: if (fdctrl->fifo[2] & 1)
1559: fdctrl->dor &= ~FD_DOR_DMAEN;
1560: else
1561: fdctrl->dor |= FD_DOR_DMAEN;
1562: /* No result back */
1563: fdctrl_reset_fifo(fdctrl);
1564: }
1565:
1.1.1.10 root 1566: static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1567: {
1.1.1.10 root 1568: FDrive *cur_drv;
1.1.1.4 root 1569:
1570: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1571: cur_drv = get_cur_drv(fdctrl);
1572: cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
1573: /* 1 Byte status back */
1574: fdctrl->fifo[0] = (cur_drv->ro << 6) |
1575: (cur_drv->track == 0 ? 0x10 : 0x00) |
1576: (cur_drv->head << 2) |
1577: GET_CUR_DRV(fdctrl) |
1578: 0x28;
1579: fdctrl_set_fifo(fdctrl, 1, 0);
1580: }
1581:
1.1.1.10 root 1582: static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1583: {
1.1.1.10 root 1584: FDrive *cur_drv;
1.1.1.4 root 1585:
1586: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1587: cur_drv = get_cur_drv(fdctrl);
1588: fd_recalibrate(cur_drv);
1589: fdctrl_reset_fifo(fdctrl);
1590: /* Raise Interrupt */
1591: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1592: }
1593:
1.1.1.10 root 1594: static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1595: {
1.1.1.10 root 1596: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1597:
1598: if(fdctrl->reset_sensei > 0) {
1599: fdctrl->fifo[0] =
1600: FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
1601: fdctrl->reset_sensei--;
1602: } else {
1603: /* XXX: status0 handling is broken for read/write
1604: commands, so we do this hack. It should be suppressed
1605: ASAP */
1606: fdctrl->fifo[0] =
1607: FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1608: }
1609:
1610: fdctrl->fifo[1] = cur_drv->track;
1611: fdctrl_set_fifo(fdctrl, 2, 0);
1612: fdctrl_reset_irq(fdctrl);
1613: fdctrl->status0 = FD_SR0_RDYCHG;
1614: }
1615:
1.1.1.10 root 1616: static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1617: {
1.1.1.10 root 1618: FDrive *cur_drv;
1.1.1.4 root 1619:
1620: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1621: cur_drv = get_cur_drv(fdctrl);
1622: fdctrl_reset_fifo(fdctrl);
1.1.1.14! root 1623: /* The seek command just sends step pulses to the drive and doesn't care if
! 1624: * there is a medium inserted of if it's banging the head against the drive.
! 1625: */
1.1.1.4 root 1626: if (fdctrl->fifo[2] > cur_drv->max_track) {
1.1.1.14! root 1627: cur_drv->track = cur_drv->max_track;
1.1.1.4 root 1628: } else {
1629: cur_drv->track = fdctrl->fifo[2];
1630: }
1.1.1.14! root 1631: /* Raise Interrupt */
! 1632: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1.1.1.4 root 1633: }
1634:
1.1.1.10 root 1635: static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1636: {
1.1.1.10 root 1637: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1638:
1639: if (fdctrl->fifo[1] & 0x80)
1640: cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
1641: /* No result back */
1642: fdctrl_reset_fifo(fdctrl);
1643: }
1644:
1.1.1.10 root 1645: static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1646: {
1647: fdctrl->config = fdctrl->fifo[2];
1648: fdctrl->precomp_trk = fdctrl->fifo[3];
1649: /* No result back */
1650: fdctrl_reset_fifo(fdctrl);
1651: }
1652:
1.1.1.10 root 1653: static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1654: {
1655: fdctrl->pwrd = fdctrl->fifo[1];
1656: fdctrl->fifo[0] = fdctrl->fifo[1];
1.1.1.14! root 1657: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1658: }
1659:
1.1.1.10 root 1660: static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1661: {
1662: /* No result back */
1663: fdctrl_reset_fifo(fdctrl);
1664: }
1665:
1.1.1.10 root 1666: static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1667: {
1.1.1.10 root 1668: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.4 root 1669:
1670: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
1671: /* Command parameters done */
1672: if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
1673: fdctrl->fifo[0] = fdctrl->fifo[1];
1674: fdctrl->fifo[2] = 0;
1675: fdctrl->fifo[3] = 0;
1.1.1.14! root 1676: fdctrl_set_fifo(fdctrl, 4, 0);
1.1.1.4 root 1677: } else {
1678: fdctrl_reset_fifo(fdctrl);
1.1 root 1679: }
1.1.1.4 root 1680: } else if (fdctrl->data_len > 7) {
1681: /* ERROR */
1682: fdctrl->fifo[0] = 0x80 |
1683: (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
1.1.1.14! root 1684: fdctrl_set_fifo(fdctrl, 1, 0);
1.1.1.4 root 1685: }
1686: }
1687:
1.1.1.10 root 1688: static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1689: {
1.1.1.10 root 1690: FDrive *cur_drv;
1.1.1.4 root 1691:
1692: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1693: cur_drv = get_cur_drv(fdctrl);
1694: if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
1695: cur_drv->track = cur_drv->max_track - 1;
1696: } else {
1697: cur_drv->track += fdctrl->fifo[2];
1.1 root 1698: }
1.1.1.4 root 1699: fdctrl_reset_fifo(fdctrl);
1700: /* Raise Interrupt */
1701: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1702: }
1703:
1.1.1.10 root 1704: static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction)
1.1.1.4 root 1705: {
1.1.1.10 root 1706: FDrive *cur_drv;
1.1.1.4 root 1707:
1708: SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
1709: cur_drv = get_cur_drv(fdctrl);
1710: if (fdctrl->fifo[2] > cur_drv->track) {
1711: cur_drv->track = 0;
1712: } else {
1713: cur_drv->track -= fdctrl->fifo[2];
1714: }
1715: fdctrl_reset_fifo(fdctrl);
1716: /* Raise Interrupt */
1717: fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
1718: }
1719:
1720: static const struct {
1721: uint8_t value;
1722: uint8_t mask;
1723: const char* name;
1724: int parameters;
1.1.1.10 root 1725: void (*handler)(FDCtrl *fdctrl, int direction);
1.1.1.4 root 1726: int direction;
1727: } handlers[] = {
1728: { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
1729: { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
1730: { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
1731: { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
1732: { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
1733: { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
1734: { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
1735: { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
1736: { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
1737: { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
1738: { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
1739: { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
1740: { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
1741: { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
1742: { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
1743: { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
1744: { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
1745: { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
1746: { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
1747: { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
1748: { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
1749: { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
1750: { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
1751: { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
1752: { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
1753: { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
1754: { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
1755: { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
1756: { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
1757: { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
1758: { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
1759: { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
1760: };
1761: /* Associate command to an index in the 'handlers' array */
1762: static uint8_t command_to_handler[256];
1763:
1.1.1.10 root 1764: static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
1.1.1.4 root 1765: {
1.1.1.10 root 1766: FDrive *cur_drv;
1.1.1.4 root 1767: int pos;
1768:
1769: /* Reset mode */
1770: if (!(fdctrl->dor & FD_DOR_nRESET)) {
1771: FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
1772: return;
1773: }
1774: if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
1775: FLOPPY_ERROR("controller not ready for writing\n");
1776: return;
1777: }
1778: fdctrl->dsr &= ~FD_DSR_PWRDOWN;
1779: /* Is it write command time ? */
1780: if (fdctrl->msr & FD_MSR_NONDMA) {
1781: /* FIFO data write */
1782: pos = fdctrl->data_pos++;
1783: pos %= FD_SECTOR_LEN;
1784: fdctrl->fifo[pos] = value;
1785: if (pos == FD_SECTOR_LEN - 1 ||
1786: fdctrl->data_pos == fdctrl->data_len) {
1787: cur_drv = get_cur_drv(fdctrl);
1788: if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
1789: FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
1790: return;
1791: }
1792: if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
1793: FLOPPY_DPRINTF("error seeking to next sector %d\n",
1794: fd_sector(cur_drv));
1795: return;
1796: }
1797: }
1798: /* Switch from transfer mode to status mode
1799: * then from status mode to command mode
1800: */
1801: if (fdctrl->data_pos == fdctrl->data_len)
1802: fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
1803: return;
1804: }
1805: if (fdctrl->data_pos == 0) {
1806: /* Command */
1807: pos = command_to_handler[value & 0xff];
1808: FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
1809: fdctrl->data_len = handlers[pos].parameters + 1;
1.1.1.14! root 1810: fdctrl->msr |= FD_MSR_CMDBUSY;
1.1.1.4 root 1811: }
1812:
1.1 root 1813: FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
1.1.1.4 root 1814: fdctrl->fifo[fdctrl->data_pos++] = value;
1815: if (fdctrl->data_pos == fdctrl->data_len) {
1.1 root 1816: /* We now have all parameters
1817: * and will be able to treat the command
1818: */
1.1.1.3 root 1819: if (fdctrl->data_state & FD_STATE_FORMAT) {
1820: fdctrl_format_sector(fdctrl);
1.1 root 1821: return;
1822: }
1.1.1.4 root 1823:
1824: pos = command_to_handler[fdctrl->fifo[0] & 0xff];
1825: FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
1826: (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
1.1 root 1827: }
1828: }
1829:
1830: static void fdctrl_result_timer(void *opaque)
1831: {
1.1.1.10 root 1832: FDCtrl *fdctrl = opaque;
1833: FDrive *cur_drv = get_cur_drv(fdctrl);
1.1.1.3 root 1834:
1835: /* Pretend we are spinning.
1836: * This is needed for Coherent, which uses READ ID to check for
1837: * sector interleaving.
1838: */
1839: if (cur_drv->last_sect != 0) {
1840: cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
1841: }
1.1.1.14! root 1842: /* READ_ID can't automatically succeed! */
! 1843: if (fdctrl->check_media_rate &&
! 1844: (fdctrl->dsr & FD_DSR_DRATEMASK) != cur_drv->media_rate) {
! 1845: FLOPPY_DPRINTF("read id rate mismatch (fdc=%d, media=%d)\n",
! 1846: fdctrl->dsr & FD_DSR_DRATEMASK, cur_drv->media_rate);
! 1847: fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00);
! 1848: } else {
! 1849: fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
! 1850: }
1.1 root 1851: }
1.1.1.4 root 1852:
1.1.1.13 root 1853: static void fdctrl_change_cb(void *opaque, bool load)
1854: {
1855: FDrive *drive = opaque;
1856:
1857: drive->media_changed = 1;
1.1.1.14! root 1858: fd_revalidate(drive);
1.1.1.13 root 1859: }
1860:
1861: static const BlockDevOps fdctrl_block_ops = {
1862: .change_media_cb = fdctrl_change_cb,
1863: };
1864:
1.1.1.4 root 1865: /* Init functions */
1.1.1.10 root 1866: static int fdctrl_connect_drives(FDCtrl *fdctrl)
1.1.1.6 root 1867: {
1868: unsigned int i;
1.1.1.10 root 1869: FDrive *drive;
1.1.1.6 root 1870:
1871: for (i = 0; i < MAX_FD; i++) {
1.1.1.10 root 1872: drive = &fdctrl->drives[i];
1.1.1.14! root 1873: drive->fdctrl = fdctrl;
1.1.1.10 root 1874:
1875: if (drive->bs) {
1876: if (bdrv_get_on_error(drive->bs, 0) != BLOCK_ERR_STOP_ENOSPC) {
1877: error_report("fdc doesn't support drive option werror");
1878: return -1;
1879: }
1880: if (bdrv_get_on_error(drive->bs, 1) != BLOCK_ERR_REPORT) {
1881: error_report("fdc doesn't support drive option rerror");
1882: return -1;
1883: }
1884: }
1885:
1886: fd_init(drive);
1.1.1.14! root 1887: fdctrl_change_cb(drive, 0);
1.1.1.10 root 1888: if (drive->bs) {
1.1.1.13 root 1889: bdrv_set_dev_ops(drive->bs, &fdctrl_block_ops, drive);
1.1.1.10 root 1890: }
1.1.1.6 root 1891: }
1.1.1.10 root 1892: return 0;
1.1.1.6 root 1893: }
1894:
1.1.1.12 root 1895: void 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:
1.1.1.12 root 1917: void sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
1918: DriveInfo **fds, qemu_irq *fdc_tc)
1.1.1.6 root 1919: {
1920: DeviceState *dev;
1.1.1.10 root 1921: FDCtrlSysBus *sys;
1.1.1.6 root 1922:
1923: dev = qdev_create(NULL, "SUNW,fdtwo");
1.1.1.8 root 1924: if (fds[0]) {
1.1.1.10 root 1925: qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv);
1.1.1.8 root 1926: }
1.1.1.6 root 1927: qdev_init_nofail(dev);
1.1.1.10 root 1928: sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
1.1.1.6 root 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:
1.1.1.10 root 1934: static int fdctrl_init_common(FDCtrl *fdctrl)
1.1.1.4 root 1935: {
1936: int i, j;
1.1.1.6 root 1937: static int command_tables_inited = 0;
1.1.1.4 root 1938:
1939: /* Fill 'command_to_handler' lookup table */
1.1.1.6 root 1940: if (!command_tables_inited) {
1941: command_tables_inited = 1;
1942: for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) {
1943: for (j = 0; j < sizeof(command_to_handler); j++) {
1944: if ((j & handlers[i].mask) == handlers[i].value) {
1945: command_to_handler[j] = i;
1946: }
1947: }
1.1.1.4 root 1948: }
1949: }
1950:
1951: FLOPPY_DPRINTF("init controller\n");
1952: fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
1.1.1.6 root 1953: fdctrl->fifo_size = 512;
1.1.1.12 root 1954: fdctrl->result_timer = qemu_new_timer_ns(vm_clock,
1.1.1.4 root 1955: fdctrl_result_timer, fdctrl);
1956:
1957: fdctrl->version = 0x90; /* Intel 82078 controller */
1958: fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
1.1.1.6 root 1959: fdctrl->num_floppies = MAX_FD;
1960:
1961: if (fdctrl->dma_chann != -1)
1962: DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl);
1.1.1.10 root 1963: return fdctrl_connect_drives(fdctrl);
1.1.1.4 root 1964: }
1965:
1.1.1.13 root 1966: static const MemoryRegionPortio fdc_portio_list[] = {
1967: { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write },
1968: { 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write },
1969: PORTIO_END_OF_LIST(),
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 ret;
1.1.1.4 root 1977:
1.1.1.14! root 1978: isa_register_portio_list(dev, isa->iobase, fdc_portio_list, fdctrl, "fdc");
1.1.1.11 root 1979:
1.1.1.14! root 1980: isa_init_irq(&isa->busdev, &fdctrl->irq, isa->irq);
! 1981: fdctrl->dma_chann = isa->dma;
1.1.1.4 root 1982:
1.1.1.14! root 1983: qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 2);
1.1.1.10 root 1984: ret = fdctrl_init_common(fdctrl);
1.1.1.5 root 1985:
1.1.1.11 root 1986: add_boot_device_path(isa->bootindexA, &dev->qdev, "/floppy@0");
1987: add_boot_device_path(isa->bootindexB, &dev->qdev, "/floppy@1");
1988:
1.1.1.6 root 1989: return ret;
1.1.1.4 root 1990: }
1991:
1.1.1.6 root 1992: static int sysbus_fdc_init1(SysBusDevice *dev)
1.1.1.4 root 1993: {
1.1.1.10 root 1994: FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
1995: FDCtrl *fdctrl = &sys->state;
1.1.1.6 root 1996: int ret;
1.1.1.4 root 1997:
1.1.1.14! root 1998: memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_ops, fdctrl, "fdc", 0x08);
! 1999: sysbus_init_mmio(dev, &fdctrl->iomem);
1.1.1.6 root 2000: sysbus_init_irq(dev, &fdctrl->irq);
2001: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2002: fdctrl->dma_chann = -1;
1.1.1.5 root 2003:
1.1.1.14! root 2004: qdev_set_legacy_instance_id(&dev->qdev, 0 /* io */, 2); /* FIXME */
1.1.1.10 root 2005: ret = fdctrl_init_common(fdctrl);
1.1.1.4 root 2006:
1.1.1.6 root 2007: return ret;
1.1.1.4 root 2008: }
1.1.1.5 root 2009:
1.1.1.6 root 2010: static int sun4m_fdc_init1(SysBusDevice *dev)
1.1.1.5 root 2011: {
1.1.1.10 root 2012: FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
1.1.1.5 root 2013:
1.1.1.14! root 2014: memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_strict_ops, fdctrl,
! 2015: "fdctrl", 0x08);
! 2016: sysbus_init_mmio(dev, &fdctrl->iomem);
1.1.1.6 root 2017: sysbus_init_irq(dev, &fdctrl->irq);
2018: qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
2019:
2020: fdctrl->sun4m = 1;
1.1.1.14! root 2021: qdev_set_legacy_instance_id(&dev->qdev, 0 /* io */, 2); /* FIXME */
1.1.1.10 root 2022: return fdctrl_init_common(fdctrl);
1.1.1.5 root 2023: }
2024:
1.1.1.13 root 2025: void fdc_get_bs(BlockDriverState *bs[], ISADevice *dev)
2026: {
2027: FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
2028: FDCtrl *fdctrl = &isa->state;
2029: int i;
2030:
2031: for (i = 0; i < MAX_FD; i++) {
2032: bs[i] = fdctrl->drives[i].bs;
2033: }
2034: }
2035:
2036:
1.1.1.10 root 2037: static const VMStateDescription vmstate_isa_fdc ={
2038: .name = "fdc",
2039: .version_id = 2,
2040: .minimum_version_id = 2,
2041: .fields = (VMStateField []) {
2042: VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl),
2043: VMSTATE_END_OF_LIST()
2044: }
2045: };
2046:
1.1.1.14! root 2047: static Property isa_fdc_properties[] = {
! 2048: DEFINE_PROP_HEX32("iobase", FDCtrlISABus, iobase, 0x3f0),
! 2049: DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6),
! 2050: DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2),
! 2051: DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs),
! 2052: DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
! 2053: DEFINE_PROP_INT32("bootindexA", FDCtrlISABus, bootindexA, -1),
! 2054: DEFINE_PROP_INT32("bootindexB", FDCtrlISABus, bootindexB, -1),
! 2055: DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate,
! 2056: 0, true),
! 2057: DEFINE_PROP_END_OF_LIST(),
! 2058: };
! 2059:
! 2060: static void isabus_fdc_class_init1(ObjectClass *klass, void *data)
! 2061: {
! 2062: DeviceClass *dc = DEVICE_CLASS(klass);
! 2063: ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
! 2064: ic->init = isabus_fdc_init1;
! 2065: dc->fw_name = "fdc";
! 2066: dc->no_user = 1;
! 2067: dc->reset = fdctrl_external_reset_isa;
! 2068: dc->vmsd = &vmstate_isa_fdc;
! 2069: dc->props = isa_fdc_properties;
! 2070: }
! 2071:
! 2072: static TypeInfo isa_fdc_info = {
! 2073: .name = "isa-fdc",
! 2074: .parent = TYPE_ISA_DEVICE,
! 2075: .instance_size = sizeof(FDCtrlISABus),
! 2076: .class_init = isabus_fdc_class_init1,
1.1.1.6 root 2077: };
1.1.1.5 root 2078:
1.1.1.10 root 2079: static const VMStateDescription vmstate_sysbus_fdc ={
2080: .name = "fdc",
2081: .version_id = 2,
2082: .minimum_version_id = 2,
2083: .fields = (VMStateField []) {
2084: VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
2085: VMSTATE_END_OF_LIST()
2086: }
2087: };
2088:
1.1.1.14! root 2089: static Property sysbus_fdc_properties[] = {
! 2090: DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs),
! 2091: DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs),
! 2092: DEFINE_PROP_END_OF_LIST(),
1.1.1.6 root 2093: };
2094:
1.1.1.14! root 2095: static void sysbus_fdc_class_init(ObjectClass *klass, void *data)
! 2096: {
! 2097: DeviceClass *dc = DEVICE_CLASS(klass);
! 2098: SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
! 2099:
! 2100: k->init = sysbus_fdc_init1;
! 2101: dc->reset = fdctrl_external_reset_sysbus;
! 2102: dc->vmsd = &vmstate_sysbus_fdc;
! 2103: dc->props = sysbus_fdc_properties;
! 2104: }
! 2105:
! 2106: static TypeInfo sysbus_fdc_info = {
! 2107: .name = "sysbus-fdc",
! 2108: .parent = TYPE_SYS_BUS_DEVICE,
! 2109: .instance_size = sizeof(FDCtrlSysBus),
! 2110: .class_init = sysbus_fdc_class_init,
! 2111: };
! 2112:
! 2113: static Property sun4m_fdc_properties[] = {
! 2114: DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs),
! 2115: DEFINE_PROP_END_OF_LIST(),
! 2116: };
! 2117:
! 2118: static void sun4m_fdc_class_init(ObjectClass *klass, void *data)
! 2119: {
! 2120: DeviceClass *dc = DEVICE_CLASS(klass);
! 2121: SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
! 2122:
! 2123: k->init = sun4m_fdc_init1;
! 2124: dc->reset = fdctrl_external_reset_sysbus;
! 2125: dc->vmsd = &vmstate_sysbus_fdc;
! 2126: dc->props = sun4m_fdc_properties;
! 2127: }
! 2128:
! 2129: static TypeInfo sun4m_fdc_info = {
! 2130: .name = "SUNW,fdtwo",
! 2131: .parent = TYPE_SYS_BUS_DEVICE,
! 2132: .instance_size = sizeof(FDCtrlSysBus),
! 2133: .class_init = sun4m_fdc_class_init,
1.1.1.5 root 2134: };
2135:
1.1.1.14! root 2136: static void fdc_register_types(void)
1.1.1.5 root 2137: {
1.1.1.14! root 2138: type_register_static(&isa_fdc_info);
! 2139: type_register_static(&sysbus_fdc_info);
! 2140: type_register_static(&sun4m_fdc_info);
1.1.1.5 root 2141: }
2142:
1.1.1.14! root 2143: type_init(fdc_register_types)
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