xref: /openbmc/qemu/hw/ide/microdrive.c (revision 51b24e34)
1 /*
2  * QEMU IDE Emulation: microdrive (CF / PCMCIA)
3  *
4  * Copyright (c) 2003 Fabrice Bellard
5  * Copyright (c) 2006 Openedhand Ltd.
6  *
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 #include <hw/hw.h>
26 #include <hw/pc.h>
27 #include <hw/pcmcia.h>
28 #include "block.h"
29 #include "block_int.h"
30 #include "dma.h"
31 
32 #include <hw/ide/internal.h>
33 
34 /***********************************************************/
35 /* CF-ATA Microdrive */
36 
37 #define METADATA_SIZE	0x20
38 
39 /* DSCM-1XXXX Microdrive hard disk with CF+ II / PCMCIA interface.  */
40 typedef struct {
41     IDEBus bus;
42     PCMCIACardState card;
43     uint32_t attr_base;
44     uint32_t io_base;
45 
46     /* Card state */
47     uint8_t opt;
48     uint8_t stat;
49     uint8_t pins;
50 
51     uint8_t ctrl;
52     uint16_t io;
53     uint8_t cycle;
54 } MicroDriveState;
55 
56 /* Register bitfields */
57 enum md_opt {
58     OPT_MODE_MMAP	= 0,
59     OPT_MODE_IOMAP16	= 1,
60     OPT_MODE_IOMAP1	= 2,
61     OPT_MODE_IOMAP2	= 3,
62     OPT_MODE		= 0x3f,
63     OPT_LEVIREQ		= 0x40,
64     OPT_SRESET		= 0x80,
65 };
66 enum md_cstat {
67     STAT_INT		= 0x02,
68     STAT_PWRDWN		= 0x04,
69     STAT_XE		= 0x10,
70     STAT_IOIS8		= 0x20,
71     STAT_SIGCHG		= 0x40,
72     STAT_CHANGED	= 0x80,
73 };
74 enum md_pins {
75     PINS_MRDY		= 0x02,
76     PINS_CRDY		= 0x20,
77 };
78 enum md_ctrl {
79     CTRL_IEN		= 0x02,
80     CTRL_SRST		= 0x04,
81 };
82 
83 static inline void md_interrupt_update(MicroDriveState *s)
84 {
85     if (!s->card.slot)
86         return;
87 
88     qemu_set_irq(s->card.slot->irq,
89                     !(s->stat & STAT_INT) &&	/* Inverted */
90                     !(s->ctrl & (CTRL_IEN | CTRL_SRST)) &&
91                     !(s->opt & OPT_SRESET));
92 }
93 
94 static void md_set_irq(void *opaque, int irq, int level)
95 {
96     MicroDriveState *s = opaque;
97     if (level)
98         s->stat |= STAT_INT;
99     else
100         s->stat &= ~STAT_INT;
101 
102     md_interrupt_update(s);
103 }
104 
105 static void md_reset(MicroDriveState *s)
106 {
107     s->opt = OPT_MODE_MMAP;
108     s->stat = 0;
109     s->pins = 0;
110     s->cycle = 0;
111     s->ctrl = 0;
112     ide_bus_reset(&s->bus);
113 }
114 
115 static uint8_t md_attr_read(void *opaque, uint32_t at)
116 {
117     MicroDriveState *s = opaque;
118     if (at < s->attr_base) {
119         if (at < s->card.cis_len)
120             return s->card.cis[at];
121         else
122             return 0x00;
123     }
124 
125     at -= s->attr_base;
126 
127     switch (at) {
128     case 0x00:	/* Configuration Option Register */
129         return s->opt;
130     case 0x02:	/* Card Configuration Status Register */
131         if (s->ctrl & CTRL_IEN)
132             return s->stat & ~STAT_INT;
133         else
134             return s->stat;
135     case 0x04:	/* Pin Replacement Register */
136         return (s->pins & PINS_CRDY) | 0x0c;
137     case 0x06:	/* Socket and Copy Register */
138         return 0x00;
139 #ifdef VERBOSE
140     default:
141         printf("%s: Bad attribute space register %02x\n", __FUNCTION__, at);
142 #endif
143     }
144 
145     return 0;
146 }
147 
148 static void md_attr_write(void *opaque, uint32_t at, uint8_t value)
149 {
150     MicroDriveState *s = opaque;
151     at -= s->attr_base;
152 
153     switch (at) {
154     case 0x00:	/* Configuration Option Register */
155         s->opt = value & 0xcf;
156         if (value & OPT_SRESET)
157             md_reset(s);
158         md_interrupt_update(s);
159         break;
160     case 0x02:	/* Card Configuration Status Register */
161         if ((s->stat ^ value) & STAT_PWRDWN)
162             s->pins |= PINS_CRDY;
163         s->stat &= 0x82;
164         s->stat |= value & 0x74;
165         md_interrupt_update(s);
166         /* Word 170 in Identify Device must be equal to STAT_XE */
167         break;
168     case 0x04:	/* Pin Replacement Register */
169         s->pins &= PINS_CRDY;
170         s->pins |= value & PINS_MRDY;
171         break;
172     case 0x06:	/* Socket and Copy Register */
173         break;
174     default:
175         printf("%s: Bad attribute space register %02x\n", __FUNCTION__, at);
176     }
177 }
178 
179 static uint16_t md_common_read(void *opaque, uint32_t at)
180 {
181     MicroDriveState *s = opaque;
182     IDEState *ifs;
183     uint16_t ret;
184     at -= s->io_base;
185 
186     switch (s->opt & OPT_MODE) {
187     case OPT_MODE_MMAP:
188         if ((at & ~0x3ff) == 0x400)
189             at = 0;
190         break;
191     case OPT_MODE_IOMAP16:
192         at &= 0xf;
193         break;
194     case OPT_MODE_IOMAP1:
195         if ((at & ~0xf) == 0x3f0)
196             at -= 0x3e8;
197         else if ((at & ~0xf) == 0x1f0)
198             at -= 0x1f0;
199         break;
200     case OPT_MODE_IOMAP2:
201         if ((at & ~0xf) == 0x370)
202             at -= 0x368;
203         else if ((at & ~0xf) == 0x170)
204             at -= 0x170;
205     }
206 
207     switch (at) {
208     case 0x0:	/* Even RD Data */
209     case 0x8:
210         return ide_data_readw(&s->bus, 0);
211 
212         /* TODO: 8-bit accesses */
213         if (s->cycle)
214             ret = s->io >> 8;
215         else {
216             s->io = ide_data_readw(&s->bus, 0);
217             ret = s->io & 0xff;
218         }
219         s->cycle = !s->cycle;
220         return ret;
221     case 0x9:	/* Odd RD Data */
222         return s->io >> 8;
223     case 0xd:	/* Error */
224         return ide_ioport_read(&s->bus, 0x1);
225     case 0xe:	/* Alternate Status */
226         ifs = idebus_active_if(&s->bus);
227         if (ifs->bs)
228             return ifs->status;
229         else
230             return 0;
231     case 0xf:	/* Device Address */
232         ifs = idebus_active_if(&s->bus);
233         return 0xc2 | ((~ifs->select << 2) & 0x3c);
234     default:
235         return ide_ioport_read(&s->bus, at);
236     }
237 
238     return 0;
239 }
240 
241 static void md_common_write(void *opaque, uint32_t at, uint16_t value)
242 {
243     MicroDriveState *s = opaque;
244     at -= s->io_base;
245 
246     switch (s->opt & OPT_MODE) {
247     case OPT_MODE_MMAP:
248         if ((at & ~0x3ff) == 0x400)
249             at = 0;
250         break;
251     case OPT_MODE_IOMAP16:
252         at &= 0xf;
253         break;
254     case OPT_MODE_IOMAP1:
255         if ((at & ~0xf) == 0x3f0)
256             at -= 0x3e8;
257         else if ((at & ~0xf) == 0x1f0)
258             at -= 0x1f0;
259         break;
260     case OPT_MODE_IOMAP2:
261         if ((at & ~0xf) == 0x370)
262             at -= 0x368;
263         else if ((at & ~0xf) == 0x170)
264             at -= 0x170;
265     }
266 
267     switch (at) {
268     case 0x0:	/* Even WR Data */
269     case 0x8:
270         ide_data_writew(&s->bus, 0, value);
271         break;
272 
273         /* TODO: 8-bit accesses */
274         if (s->cycle)
275             ide_data_writew(&s->bus, 0, s->io | (value << 8));
276         else
277             s->io = value & 0xff;
278         s->cycle = !s->cycle;
279         break;
280     case 0x9:
281         s->io = value & 0xff;
282         s->cycle = !s->cycle;
283         break;
284     case 0xd:	/* Features */
285         ide_ioport_write(&s->bus, 0x1, value);
286         break;
287     case 0xe:	/* Device Control */
288         s->ctrl = value;
289         if (value & CTRL_SRST)
290             md_reset(s);
291         md_interrupt_update(s);
292         break;
293     default:
294         if (s->stat & STAT_PWRDWN) {
295             s->pins |= PINS_CRDY;
296             s->stat &= ~STAT_PWRDWN;
297         }
298         ide_ioport_write(&s->bus, at, value);
299     }
300 }
301 
302 static const VMStateDescription vmstate_microdrive = {
303     .name = "microdrive",
304     .version_id = 3,
305     .minimum_version_id = 0,
306     .minimum_version_id_old = 0,
307     .fields      = (VMStateField []) {
308         VMSTATE_UINT8(opt, MicroDriveState),
309         VMSTATE_UINT8(stat, MicroDriveState),
310         VMSTATE_UINT8(pins, MicroDriveState),
311         VMSTATE_UINT8(ctrl, MicroDriveState),
312         VMSTATE_UINT16(io, MicroDriveState),
313         VMSTATE_UINT8(cycle, MicroDriveState),
314         VMSTATE_IDE_BUS(bus, MicroDriveState),
315         VMSTATE_IDE_DRIVES(bus.ifs, MicroDriveState),
316         VMSTATE_END_OF_LIST()
317     }
318 };
319 
320 static const uint8_t dscm1xxxx_cis[0x14a] = {
321     [0x000] = CISTPL_DEVICE,	/* 5V Device Information */
322     [0x002] = 0x03,		/* Tuple length = 4 bytes */
323     [0x004] = 0xdb,		/* ID: DTYPE_FUNCSPEC, non WP, DSPEED_150NS */
324     [0x006] = 0x01,		/* Size = 2K bytes */
325     [0x008] = CISTPL_ENDMARK,
326 
327     [0x00a] = CISTPL_DEVICE_OC,	/* Additional Device Information */
328     [0x00c] = 0x04,		/* Tuple length = 4 byest */
329     [0x00e] = 0x03,		/* Conditions: Ext = 0, Vcc 3.3V, MWAIT = 1 */
330     [0x010] = 0xdb,		/* ID: DTYPE_FUNCSPEC, non WP, DSPEED_150NS */
331     [0x012] = 0x01,		/* Size = 2K bytes */
332     [0x014] = CISTPL_ENDMARK,
333 
334     [0x016] = CISTPL_JEDEC_C,	/* JEDEC ID */
335     [0x018] = 0x02,		/* Tuple length = 2 bytes */
336     [0x01a] = 0xdf,		/* PC Card ATA with no Vpp required */
337     [0x01c] = 0x01,
338 
339     [0x01e] = CISTPL_MANFID,	/* Manufacture ID */
340     [0x020] = 0x04,		/* Tuple length = 4 bytes */
341     [0x022] = 0xa4,		/* TPLMID_MANF = 00a4 (IBM) */
342     [0x024] = 0x00,
343     [0x026] = 0x00,		/* PLMID_CARD = 0000 */
344     [0x028] = 0x00,
345 
346     [0x02a] = CISTPL_VERS_1,	/* Level 1 Version */
347     [0x02c] = 0x12,		/* Tuple length = 23 bytes */
348     [0x02e] = 0x04,		/* Major Version = JEIDA 4.2 / PCMCIA 2.1 */
349     [0x030] = 0x01,		/* Minor Version = 1 */
350     [0x032] = 'I',
351     [0x034] = 'B',
352     [0x036] = 'M',
353     [0x038] = 0x00,
354     [0x03a] = 'm',
355     [0x03c] = 'i',
356     [0x03e] = 'c',
357     [0x040] = 'r',
358     [0x042] = 'o',
359     [0x044] = 'd',
360     [0x046] = 'r',
361     [0x048] = 'i',
362     [0x04a] = 'v',
363     [0x04c] = 'e',
364     [0x04e] = 0x00,
365     [0x050] = CISTPL_ENDMARK,
366 
367     [0x052] = CISTPL_FUNCID,	/* Function ID */
368     [0x054] = 0x02,		/* Tuple length = 2 bytes */
369     [0x056] = 0x04,		/* TPLFID_FUNCTION = Fixed Disk */
370     [0x058] = 0x01,		/* TPLFID_SYSINIT: POST = 1, ROM = 0 */
371 
372     [0x05a] = CISTPL_FUNCE,	/* Function Extension */
373     [0x05c] = 0x02,		/* Tuple length = 2 bytes */
374     [0x05e] = 0x01,		/* TPLFE_TYPE = Disk Device Interface */
375     [0x060] = 0x01,		/* TPLFE_DATA = PC Card ATA Interface */
376 
377     [0x062] = CISTPL_FUNCE,	/* Function Extension */
378     [0x064] = 0x03,		/* Tuple length = 3 bytes */
379     [0x066] = 0x02,		/* TPLFE_TYPE = Basic PC Card ATA Interface */
380     [0x068] = 0x08,		/* TPLFE_DATA: Rotating, Unique, Single */
381     [0x06a] = 0x0f,		/* TPLFE_DATA: Sleep, Standby, Idle, Auto */
382 
383     [0x06c] = CISTPL_CONFIG,	/* Configuration */
384     [0x06e] = 0x05,		/* Tuple length = 5 bytes */
385     [0x070] = 0x01,		/* TPCC_RASZ = 2 bytes, TPCC_RMSZ = 1 byte */
386     [0x072] = 0x07,		/* TPCC_LAST = 7 */
387     [0x074] = 0x00,		/* TPCC_RADR = 0200 */
388     [0x076] = 0x02,
389     [0x078] = 0x0f,		/* TPCC_RMSK = 200, 202, 204, 206 */
390 
391     [0x07a] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
392     [0x07c] = 0x0b,		/* Tuple length = 11 bytes */
393     [0x07e] = 0xc0,		/* TPCE_INDX = Memory Mode, Default, Iface */
394     [0x080] = 0xc0,		/* TPCE_IF = Memory, no BVDs, no WP, READY */
395     [0x082] = 0xa1,		/* TPCE_FS = Vcc only, no I/O, Memory, Misc */
396     [0x084] = 0x27,		/* NomV = 1, MinV = 1, MaxV = 1, Peakl = 1 */
397     [0x086] = 0x55,		/* NomV: 5.0 V */
398     [0x088] = 0x4d,		/* MinV: 4.5 V */
399     [0x08a] = 0x5d,		/* MaxV: 5.5 V */
400     [0x08c] = 0x4e,		/* Peakl: 450 mA */
401     [0x08e] = 0x08,		/* TPCE_MS = 1 window, 1 byte, Host address */
402     [0x090] = 0x00,		/* Window descriptor: Window length = 0 */
403     [0x092] = 0x20,		/* TPCE_MI: support power down mode, RW */
404 
405     [0x094] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
406     [0x096] = 0x06,		/* Tuple length = 6 bytes */
407     [0x098] = 0x00,		/* TPCE_INDX = Memory Mode, no Default */
408     [0x09a] = 0x01,		/* TPCE_FS = Vcc only, no I/O, no Memory */
409     [0x09c] = 0x21,		/* NomV = 1, MinV = 0, MaxV = 0, Peakl = 1 */
410     [0x09e] = 0xb5,		/* NomV: 3.3 V */
411     [0x0a0] = 0x1e,
412     [0x0a2] = 0x3e,		/* Peakl: 350 mA */
413 
414     [0x0a4] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
415     [0x0a6] = 0x0d,		/* Tuple length = 13 bytes */
416     [0x0a8] = 0xc1,		/* TPCE_INDX = I/O and Memory Mode, Default */
417     [0x0aa] = 0x41,		/* TPCE_IF = I/O and Memory, no BVD, no WP */
418     [0x0ac] = 0x99,		/* TPCE_FS = Vcc only, I/O, Interrupt, Misc */
419     [0x0ae] = 0x27,		/* NomV = 1, MinV = 1, MaxV = 1, Peakl = 1 */
420     [0x0b0] = 0x55,		/* NomV: 5.0 V */
421     [0x0b2] = 0x4d,		/* MinV: 4.5 V */
422     [0x0b4] = 0x5d,		/* MaxV: 5.5 V */
423     [0x0b6] = 0x4e,		/* Peakl: 450 mA */
424     [0x0b8] = 0x64,		/* TPCE_IO = 16-byte boundary, 16/8 accesses */
425     [0x0ba] = 0xf0,		/* TPCE_IR =  MASK, Level, Pulse, Share */
426     [0x0bc] = 0xff,		/* IRQ0..IRQ7 supported */
427     [0x0be] = 0xff,		/* IRQ8..IRQ15 supported */
428     [0x0c0] = 0x20,		/* TPCE_MI = support power down mode */
429 
430     [0x0c2] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
431     [0x0c4] = 0x06,		/* Tuple length = 6 bytes */
432     [0x0c6] = 0x01,		/* TPCE_INDX = I/O and Memory Mode */
433     [0x0c8] = 0x01,		/* TPCE_FS = Vcc only, no I/O, no Memory */
434     [0x0ca] = 0x21,		/* NomV = 1, MinV = 0, MaxV = 0, Peakl = 1 */
435     [0x0cc] = 0xb5,		/* NomV: 3.3 V */
436     [0x0ce] = 0x1e,
437     [0x0d0] = 0x3e,		/* Peakl: 350 mA */
438 
439     [0x0d2] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
440     [0x0d4] = 0x12,		/* Tuple length = 18 bytes */
441     [0x0d6] = 0xc2,		/* TPCE_INDX = I/O Primary Mode */
442     [0x0d8] = 0x41,		/* TPCE_IF = I/O and Memory, no BVD, no WP */
443     [0x0da] = 0x99,		/* TPCE_FS = Vcc only, I/O, Interrupt, Misc */
444     [0x0dc] = 0x27,		/* NomV = 1, MinV = 1, MaxV = 1, Peakl = 1 */
445     [0x0de] = 0x55,		/* NomV: 5.0 V */
446     [0x0e0] = 0x4d,		/* MinV: 4.5 V */
447     [0x0e2] = 0x5d,		/* MaxV: 5.5 V */
448     [0x0e4] = 0x4e,		/* Peakl: 450 mA */
449     [0x0e6] = 0xea,		/* TPCE_IO = 1K boundary, 16/8 access, Range */
450     [0x0e8] = 0x61,		/* Range: 2 fields, 2 bytes addr, 1 byte len */
451     [0x0ea] = 0xf0,		/* Field 1 address = 0x01f0 */
452     [0x0ec] = 0x01,
453     [0x0ee] = 0x07,		/* Address block length = 8 */
454     [0x0f0] = 0xf6,		/* Field 2 address = 0x03f6 */
455     [0x0f2] = 0x03,
456     [0x0f4] = 0x01,		/* Address block length = 2 */
457     [0x0f6] = 0xee,		/* TPCE_IR = IRQ E, Level, Pulse, Share */
458     [0x0f8] = 0x20,		/* TPCE_MI = support power down mode */
459 
460     [0x0fa] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
461     [0x0fc] = 0x06,		/* Tuple length = 6 bytes */
462     [0x0fe] = 0x02,		/* TPCE_INDX = I/O Primary Mode, no Default */
463     [0x100] = 0x01,		/* TPCE_FS = Vcc only, no I/O, no Memory */
464     [0x102] = 0x21,		/* NomV = 1, MinV = 0, MaxV = 0, Peakl = 1 */
465     [0x104] = 0xb5,		/* NomV: 3.3 V */
466     [0x106] = 0x1e,
467     [0x108] = 0x3e,		/* Peakl: 350 mA */
468 
469     [0x10a] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
470     [0x10c] = 0x12,		/* Tuple length = 18 bytes */
471     [0x10e] = 0xc3,		/* TPCE_INDX = I/O Secondary Mode, Default */
472     [0x110] = 0x41,		/* TPCE_IF = I/O and Memory, no BVD, no WP */
473     [0x112] = 0x99,		/* TPCE_FS = Vcc only, I/O, Interrupt, Misc */
474     [0x114] = 0x27,		/* NomV = 1, MinV = 1, MaxV = 1, Peakl = 1 */
475     [0x116] = 0x55,		/* NomV: 5.0 V */
476     [0x118] = 0x4d,		/* MinV: 4.5 V */
477     [0x11a] = 0x5d,		/* MaxV: 5.5 V */
478     [0x11c] = 0x4e,		/* Peakl: 450 mA */
479     [0x11e] = 0xea,		/* TPCE_IO = 1K boundary, 16/8 access, Range */
480     [0x120] = 0x61,		/* Range: 2 fields, 2 byte addr, 1 byte len */
481     [0x122] = 0x70,		/* Field 1 address = 0x0170 */
482     [0x124] = 0x01,
483     [0x126] = 0x07,		/* Address block length = 8 */
484     [0x128] = 0x76,		/* Field 2 address = 0x0376 */
485     [0x12a] = 0x03,
486     [0x12c] = 0x01,		/* Address block length = 2 */
487     [0x12e] = 0xee,		/* TPCE_IR = IRQ E, Level, Pulse, Share */
488     [0x130] = 0x20,		/* TPCE_MI = support power down mode */
489 
490     [0x132] = CISTPL_CFTABLE_ENTRY,	/* 16-bit PC Card Configuration */
491     [0x134] = 0x06,		/* Tuple length = 6 bytes */
492     [0x136] = 0x03,		/* TPCE_INDX = I/O Secondary Mode */
493     [0x138] = 0x01,		/* TPCE_FS = Vcc only, no I/O, no Memory */
494     [0x13a] = 0x21,		/* NomV = 1, MinV = 0, MaxV = 0, Peakl = 1 */
495     [0x13c] = 0xb5,		/* NomV: 3.3 V */
496     [0x13e] = 0x1e,
497     [0x140] = 0x3e,		/* Peakl: 350 mA */
498 
499     [0x142] = CISTPL_NO_LINK,	/* No Link */
500     [0x144] = 0x00,		/* Tuple length = 0 bytes */
501 
502     [0x146] = CISTPL_END,	/* Tuple End */
503 };
504 
505 static int dscm1xxxx_attach(void *opaque)
506 {
507     MicroDriveState *md = opaque;
508     md->card.attr_read = md_attr_read;
509     md->card.attr_write = md_attr_write;
510     md->card.common_read = md_common_read;
511     md->card.common_write = md_common_write;
512     md->card.io_read = md_common_read;
513     md->card.io_write = md_common_write;
514 
515     md->attr_base = md->card.cis[0x74] | (md->card.cis[0x76] << 8);
516     md->io_base = 0x0;
517 
518     md_reset(md);
519     md_interrupt_update(md);
520 
521     md->card.slot->card_string = "DSCM-1xxxx Hitachi Microdrive";
522     return 0;
523 }
524 
525 static int dscm1xxxx_detach(void *opaque)
526 {
527     MicroDriveState *md = opaque;
528     md_reset(md);
529     return 0;
530 }
531 
532 PCMCIACardState *dscm1xxxx_init(DriveInfo *bdrv)
533 {
534     MicroDriveState *md = (MicroDriveState *) qemu_mallocz(sizeof(MicroDriveState));
535     md->card.state = md;
536     md->card.attach = dscm1xxxx_attach;
537     md->card.detach = dscm1xxxx_detach;
538     md->card.cis = dscm1xxxx_cis;
539     md->card.cis_len = sizeof(dscm1xxxx_cis);
540 
541     ide_init2_with_non_qdev_drives(&md->bus, bdrv, NULL,
542                                    qemu_allocate_irqs(md_set_irq, md, 1)[0]);
543     md->bus.ifs[0].drive_kind = IDE_CFATA;
544     md->bus.ifs[0].mdata_size = METADATA_SIZE;
545     md->bus.ifs[0].mdata_storage = (uint8_t *) qemu_mallocz(METADATA_SIZE);
546 
547     vmstate_register(NULL, -1, &vmstate_microdrive, md);
548 
549     return &md->card;
550 }
551