xref: /openbmc/qemu/hw/audio/intel-hda.c (revision 8f0a3716)
1 /*
2  * Copyright (C) 2010 Red Hat, Inc.
3  *
4  * written by Gerd Hoffmann <kraxel@redhat.com>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 or
9  * (at your option) version 3 of the License.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #include "qemu/osdep.h"
21 #include "hw/hw.h"
22 #include "hw/pci/pci.h"
23 #include "hw/pci/msi.h"
24 #include "qemu/timer.h"
25 #include "qemu/bitops.h"
26 #include "hw/audio/soundhw.h"
27 #include "intel-hda.h"
28 #include "intel-hda-defs.h"
29 #include "sysemu/dma.h"
30 #include "qapi/error.h"
31 
32 /* --------------------------------------------------------------------- */
33 /* hda bus                                                               */
34 
35 static Property hda_props[] = {
36     DEFINE_PROP_UINT32("cad", HDACodecDevice, cad, -1),
37     DEFINE_PROP_END_OF_LIST()
38 };
39 
40 static const TypeInfo hda_codec_bus_info = {
41     .name = TYPE_HDA_BUS,
42     .parent = TYPE_BUS,
43     .instance_size = sizeof(HDACodecBus),
44 };
45 
46 void hda_codec_bus_init(DeviceState *dev, HDACodecBus *bus, size_t bus_size,
47                         hda_codec_response_func response,
48                         hda_codec_xfer_func xfer)
49 {
50     qbus_create_inplace(bus, bus_size, TYPE_HDA_BUS, dev, NULL);
51     bus->response = response;
52     bus->xfer = xfer;
53 }
54 
55 static void hda_codec_dev_realize(DeviceState *qdev, Error **errp)
56 {
57     HDACodecBus *bus = HDA_BUS(qdev->parent_bus);
58     HDACodecDevice *dev = HDA_CODEC_DEVICE(qdev);
59     HDACodecDeviceClass *cdc = HDA_CODEC_DEVICE_GET_CLASS(dev);
60 
61     if (dev->cad == -1) {
62         dev->cad = bus->next_cad;
63     }
64     if (dev->cad >= 15) {
65         error_setg(errp, "HDA audio codec address is full");
66         return;
67     }
68     bus->next_cad = dev->cad + 1;
69     if (cdc->init(dev) != 0) {
70         error_setg(errp, "HDA audio init failed");
71     }
72 }
73 
74 static void hda_codec_dev_unrealize(DeviceState *qdev, Error **errp)
75 {
76     HDACodecDevice *dev = HDA_CODEC_DEVICE(qdev);
77     HDACodecDeviceClass *cdc = HDA_CODEC_DEVICE_GET_CLASS(dev);
78 
79     if (cdc->exit) {
80         cdc->exit(dev);
81     }
82 }
83 
84 HDACodecDevice *hda_codec_find(HDACodecBus *bus, uint32_t cad)
85 {
86     BusChild *kid;
87     HDACodecDevice *cdev;
88 
89     QTAILQ_FOREACH(kid, &bus->qbus.children, sibling) {
90         DeviceState *qdev = kid->child;
91         cdev = HDA_CODEC_DEVICE(qdev);
92         if (cdev->cad == cad) {
93             return cdev;
94         }
95     }
96     return NULL;
97 }
98 
99 void hda_codec_response(HDACodecDevice *dev, bool solicited, uint32_t response)
100 {
101     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
102     bus->response(dev, solicited, response);
103 }
104 
105 bool hda_codec_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
106                     uint8_t *buf, uint32_t len)
107 {
108     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
109     return bus->xfer(dev, stnr, output, buf, len);
110 }
111 
112 /* --------------------------------------------------------------------- */
113 /* intel hda emulation                                                   */
114 
115 typedef struct IntelHDAStream IntelHDAStream;
116 typedef struct IntelHDAState IntelHDAState;
117 typedef struct IntelHDAReg IntelHDAReg;
118 
119 typedef struct bpl {
120     uint64_t addr;
121     uint32_t len;
122     uint32_t flags;
123 } bpl;
124 
125 struct IntelHDAStream {
126     /* registers */
127     uint32_t ctl;
128     uint32_t lpib;
129     uint32_t cbl;
130     uint32_t lvi;
131     uint32_t fmt;
132     uint32_t bdlp_lbase;
133     uint32_t bdlp_ubase;
134 
135     /* state */
136     bpl      *bpl;
137     uint32_t bentries;
138     uint32_t bsize, be, bp;
139 };
140 
141 struct IntelHDAState {
142     PCIDevice pci;
143     const char *name;
144     HDACodecBus codecs;
145 
146     /* registers */
147     uint32_t g_ctl;
148     uint32_t wake_en;
149     uint32_t state_sts;
150     uint32_t int_ctl;
151     uint32_t int_sts;
152     uint32_t wall_clk;
153 
154     uint32_t corb_lbase;
155     uint32_t corb_ubase;
156     uint32_t corb_rp;
157     uint32_t corb_wp;
158     uint32_t corb_ctl;
159     uint32_t corb_sts;
160     uint32_t corb_size;
161 
162     uint32_t rirb_lbase;
163     uint32_t rirb_ubase;
164     uint32_t rirb_wp;
165     uint32_t rirb_cnt;
166     uint32_t rirb_ctl;
167     uint32_t rirb_sts;
168     uint32_t rirb_size;
169 
170     uint32_t dp_lbase;
171     uint32_t dp_ubase;
172 
173     uint32_t icw;
174     uint32_t irr;
175     uint32_t ics;
176 
177     /* streams */
178     IntelHDAStream st[8];
179 
180     /* state */
181     MemoryRegion mmio;
182     uint32_t rirb_count;
183     int64_t wall_base_ns;
184 
185     /* debug logging */
186     const IntelHDAReg *last_reg;
187     uint32_t last_val;
188     uint32_t last_write;
189     uint32_t last_sec;
190     uint32_t repeat_count;
191 
192     /* properties */
193     uint32_t debug;
194     OnOffAuto msi;
195     bool old_msi_addr;
196 };
197 
198 #define TYPE_INTEL_HDA_GENERIC "intel-hda-generic"
199 
200 #define INTEL_HDA(obj) \
201     OBJECT_CHECK(IntelHDAState, (obj), TYPE_INTEL_HDA_GENERIC)
202 
203 struct IntelHDAReg {
204     const char *name;      /* register name */
205     uint32_t   size;       /* size in bytes */
206     uint32_t   reset;      /* reset value */
207     uint32_t   wmask;      /* write mask */
208     uint32_t   wclear;     /* write 1 to clear bits */
209     uint32_t   offset;     /* location in IntelHDAState */
210     uint32_t   shift;      /* byte access entries for dwords */
211     uint32_t   stream;
212     void       (*whandler)(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old);
213     void       (*rhandler)(IntelHDAState *d, const IntelHDAReg *reg);
214 };
215 
216 static void intel_hda_reset(DeviceState *dev);
217 
218 /* --------------------------------------------------------------------- */
219 
220 static hwaddr intel_hda_addr(uint32_t lbase, uint32_t ubase)
221 {
222     return ((uint64_t)ubase << 32) | lbase;
223 }
224 
225 static void intel_hda_update_int_sts(IntelHDAState *d)
226 {
227     uint32_t sts = 0;
228     uint32_t i;
229 
230     /* update controller status */
231     if (d->rirb_sts & ICH6_RBSTS_IRQ) {
232         sts |= (1 << 30);
233     }
234     if (d->rirb_sts & ICH6_RBSTS_OVERRUN) {
235         sts |= (1 << 30);
236     }
237     if (d->state_sts & d->wake_en) {
238         sts |= (1 << 30);
239     }
240 
241     /* update stream status */
242     for (i = 0; i < 8; i++) {
243         /* buffer completion interrupt */
244         if (d->st[i].ctl & (1 << 26)) {
245             sts |= (1 << i);
246         }
247     }
248 
249     /* update global status */
250     if (sts & d->int_ctl) {
251         sts |= (1U << 31);
252     }
253 
254     d->int_sts = sts;
255 }
256 
257 static void intel_hda_update_irq(IntelHDAState *d)
258 {
259     bool msi = msi_enabled(&d->pci);
260     int level;
261 
262     intel_hda_update_int_sts(d);
263     if (d->int_sts & (1U << 31) && d->int_ctl & (1U << 31)) {
264         level = 1;
265     } else {
266         level = 0;
267     }
268     dprint(d, 2, "%s: level %d [%s]\n", __func__,
269            level, msi ? "msi" : "intx");
270     if (msi) {
271         if (level) {
272             msi_notify(&d->pci, 0);
273         }
274     } else {
275         pci_set_irq(&d->pci, level);
276     }
277 }
278 
279 static int intel_hda_send_command(IntelHDAState *d, uint32_t verb)
280 {
281     uint32_t cad, nid, data;
282     HDACodecDevice *codec;
283     HDACodecDeviceClass *cdc;
284 
285     cad = (verb >> 28) & 0x0f;
286     if (verb & (1 << 27)) {
287         /* indirect node addressing, not specified in HDA 1.0 */
288         dprint(d, 1, "%s: indirect node addressing (guest bug?)\n", __func__);
289         return -1;
290     }
291     nid = (verb >> 20) & 0x7f;
292     data = verb & 0xfffff;
293 
294     codec = hda_codec_find(&d->codecs, cad);
295     if (codec == NULL) {
296         dprint(d, 1, "%s: addressed non-existing codec\n", __func__);
297         return -1;
298     }
299     cdc = HDA_CODEC_DEVICE_GET_CLASS(codec);
300     cdc->command(codec, nid, data);
301     return 0;
302 }
303 
304 static void intel_hda_corb_run(IntelHDAState *d)
305 {
306     hwaddr addr;
307     uint32_t rp, verb;
308 
309     if (d->ics & ICH6_IRS_BUSY) {
310         dprint(d, 2, "%s: [icw] verb 0x%08x\n", __func__, d->icw);
311         intel_hda_send_command(d, d->icw);
312         return;
313     }
314 
315     for (;;) {
316         if (!(d->corb_ctl & ICH6_CORBCTL_RUN)) {
317             dprint(d, 2, "%s: !run\n", __func__);
318             return;
319         }
320         if ((d->corb_rp & 0xff) == d->corb_wp) {
321             dprint(d, 2, "%s: corb ring empty\n", __func__);
322             return;
323         }
324         if (d->rirb_count == d->rirb_cnt) {
325             dprint(d, 2, "%s: rirb count reached\n", __func__);
326             return;
327         }
328 
329         rp = (d->corb_rp + 1) & 0xff;
330         addr = intel_hda_addr(d->corb_lbase, d->corb_ubase);
331         verb = ldl_le_pci_dma(&d->pci, addr + 4*rp);
332         d->corb_rp = rp;
333 
334         dprint(d, 2, "%s: [rp 0x%x] verb 0x%08x\n", __func__, rp, verb);
335         intel_hda_send_command(d, verb);
336     }
337 }
338 
339 static void intel_hda_response(HDACodecDevice *dev, bool solicited, uint32_t response)
340 {
341     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
342     IntelHDAState *d = container_of(bus, IntelHDAState, codecs);
343     hwaddr addr;
344     uint32_t wp, ex;
345 
346     if (d->ics & ICH6_IRS_BUSY) {
347         dprint(d, 2, "%s: [irr] response 0x%x, cad 0x%x\n",
348                __func__, response, dev->cad);
349         d->irr = response;
350         d->ics &= ~(ICH6_IRS_BUSY | 0xf0);
351         d->ics |= (ICH6_IRS_VALID | (dev->cad << 4));
352         return;
353     }
354 
355     if (!(d->rirb_ctl & ICH6_RBCTL_DMA_EN)) {
356         dprint(d, 1, "%s: rirb dma disabled, drop codec response\n", __func__);
357         return;
358     }
359 
360     ex = (solicited ? 0 : (1 << 4)) | dev->cad;
361     wp = (d->rirb_wp + 1) & 0xff;
362     addr = intel_hda_addr(d->rirb_lbase, d->rirb_ubase);
363     stl_le_pci_dma(&d->pci, addr + 8*wp, response);
364     stl_le_pci_dma(&d->pci, addr + 8*wp + 4, ex);
365     d->rirb_wp = wp;
366 
367     dprint(d, 2, "%s: [wp 0x%x] response 0x%x, extra 0x%x\n",
368            __func__, wp, response, ex);
369 
370     d->rirb_count++;
371     if (d->rirb_count == d->rirb_cnt) {
372         dprint(d, 2, "%s: rirb count reached (%d)\n", __func__, d->rirb_count);
373         if (d->rirb_ctl & ICH6_RBCTL_IRQ_EN) {
374             d->rirb_sts |= ICH6_RBSTS_IRQ;
375             intel_hda_update_irq(d);
376         }
377     } else if ((d->corb_rp & 0xff) == d->corb_wp) {
378         dprint(d, 2, "%s: corb ring empty (%d/%d)\n", __func__,
379                d->rirb_count, d->rirb_cnt);
380         if (d->rirb_ctl & ICH6_RBCTL_IRQ_EN) {
381             d->rirb_sts |= ICH6_RBSTS_IRQ;
382             intel_hda_update_irq(d);
383         }
384     }
385 }
386 
387 static bool intel_hda_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
388                            uint8_t *buf, uint32_t len)
389 {
390     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
391     IntelHDAState *d = container_of(bus, IntelHDAState, codecs);
392     hwaddr addr;
393     uint32_t s, copy, left;
394     IntelHDAStream *st;
395     bool irq = false;
396 
397     st = output ? d->st + 4 : d->st;
398     for (s = 0; s < 4; s++) {
399         if (stnr == ((st[s].ctl >> 20) & 0x0f)) {
400             st = st + s;
401             break;
402         }
403     }
404     if (s == 4) {
405         return false;
406     }
407     if (st->bpl == NULL) {
408         return false;
409     }
410     if (st->ctl & (1 << 26)) {
411         /*
412          * Wait with the next DMA xfer until the guest
413          * has acked the buffer completion interrupt
414          */
415         return false;
416     }
417 
418     left = len;
419     s = st->bentries;
420     while (left > 0 && s-- > 0) {
421         copy = left;
422         if (copy > st->bsize - st->lpib)
423             copy = st->bsize - st->lpib;
424         if (copy > st->bpl[st->be].len - st->bp)
425             copy = st->bpl[st->be].len - st->bp;
426 
427         dprint(d, 3, "dma: entry %d, pos %d/%d, copy %d\n",
428                st->be, st->bp, st->bpl[st->be].len, copy);
429 
430         pci_dma_rw(&d->pci, st->bpl[st->be].addr + st->bp, buf, copy, !output);
431         st->lpib += copy;
432         st->bp += copy;
433         buf += copy;
434         left -= copy;
435 
436         if (st->bpl[st->be].len == st->bp) {
437             /* bpl entry filled */
438             if (st->bpl[st->be].flags & 0x01) {
439                 irq = true;
440             }
441             st->bp = 0;
442             st->be++;
443             if (st->be == st->bentries) {
444                 /* bpl wrap around */
445                 st->be = 0;
446                 st->lpib = 0;
447             }
448         }
449     }
450     if (d->dp_lbase & 0x01) {
451         s = st - d->st;
452         addr = intel_hda_addr(d->dp_lbase & ~0x01, d->dp_ubase);
453         stl_le_pci_dma(&d->pci, addr + 8*s, st->lpib);
454     }
455     dprint(d, 3, "dma: --\n");
456 
457     if (irq) {
458         st->ctl |= (1 << 26); /* buffer completion interrupt */
459         intel_hda_update_irq(d);
460     }
461     return true;
462 }
463 
464 static void intel_hda_parse_bdl(IntelHDAState *d, IntelHDAStream *st)
465 {
466     hwaddr addr;
467     uint8_t buf[16];
468     uint32_t i;
469 
470     addr = intel_hda_addr(st->bdlp_lbase, st->bdlp_ubase);
471     st->bentries = st->lvi +1;
472     g_free(st->bpl);
473     st->bpl = g_malloc(sizeof(bpl) * st->bentries);
474     for (i = 0; i < st->bentries; i++, addr += 16) {
475         pci_dma_read(&d->pci, addr, buf, 16);
476         st->bpl[i].addr  = le64_to_cpu(*(uint64_t *)buf);
477         st->bpl[i].len   = le32_to_cpu(*(uint32_t *)(buf + 8));
478         st->bpl[i].flags = le32_to_cpu(*(uint32_t *)(buf + 12));
479         dprint(d, 1, "bdl/%d: 0x%" PRIx64 " +0x%x, 0x%x\n",
480                i, st->bpl[i].addr, st->bpl[i].len, st->bpl[i].flags);
481     }
482 
483     st->bsize = st->cbl;
484     st->lpib  = 0;
485     st->be    = 0;
486     st->bp    = 0;
487 }
488 
489 static void intel_hda_notify_codecs(IntelHDAState *d, uint32_t stream, bool running, bool output)
490 {
491     BusChild *kid;
492     HDACodecDevice *cdev;
493 
494     QTAILQ_FOREACH(kid, &d->codecs.qbus.children, sibling) {
495         DeviceState *qdev = kid->child;
496         HDACodecDeviceClass *cdc;
497 
498         cdev = HDA_CODEC_DEVICE(qdev);
499         cdc = HDA_CODEC_DEVICE_GET_CLASS(cdev);
500         if (cdc->stream) {
501             cdc->stream(cdev, stream, running, output);
502         }
503     }
504 }
505 
506 /* --------------------------------------------------------------------- */
507 
508 static void intel_hda_set_g_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
509 {
510     if ((d->g_ctl & ICH6_GCTL_RESET) == 0) {
511         intel_hda_reset(DEVICE(d));
512     }
513 }
514 
515 static void intel_hda_set_wake_en(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
516 {
517     intel_hda_update_irq(d);
518 }
519 
520 static void intel_hda_set_state_sts(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
521 {
522     intel_hda_update_irq(d);
523 }
524 
525 static void intel_hda_set_int_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
526 {
527     intel_hda_update_irq(d);
528 }
529 
530 static void intel_hda_get_wall_clk(IntelHDAState *d, const IntelHDAReg *reg)
531 {
532     int64_t ns;
533 
534     ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - d->wall_base_ns;
535     d->wall_clk = (uint32_t)(ns * 24 / 1000);  /* 24 MHz */
536 }
537 
538 static void intel_hda_set_corb_wp(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
539 {
540     intel_hda_corb_run(d);
541 }
542 
543 static void intel_hda_set_corb_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
544 {
545     intel_hda_corb_run(d);
546 }
547 
548 static void intel_hda_set_rirb_wp(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
549 {
550     if (d->rirb_wp & ICH6_RIRBWP_RST) {
551         d->rirb_wp = 0;
552     }
553 }
554 
555 static void intel_hda_set_rirb_sts(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
556 {
557     intel_hda_update_irq(d);
558 
559     if ((old & ICH6_RBSTS_IRQ) && !(d->rirb_sts & ICH6_RBSTS_IRQ)) {
560         /* cleared ICH6_RBSTS_IRQ */
561         d->rirb_count = 0;
562         intel_hda_corb_run(d);
563     }
564 }
565 
566 static void intel_hda_set_ics(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
567 {
568     if (d->ics & ICH6_IRS_BUSY) {
569         intel_hda_corb_run(d);
570     }
571 }
572 
573 static void intel_hda_set_st_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
574 {
575     bool output = reg->stream >= 4;
576     IntelHDAStream *st = d->st + reg->stream;
577 
578     if (st->ctl & 0x01) {
579         /* reset */
580         dprint(d, 1, "st #%d: reset\n", reg->stream);
581         st->ctl = SD_STS_FIFO_READY << 24;
582     }
583     if ((st->ctl & 0x02) != (old & 0x02)) {
584         uint32_t stnr = (st->ctl >> 20) & 0x0f;
585         /* run bit flipped */
586         if (st->ctl & 0x02) {
587             /* start */
588             dprint(d, 1, "st #%d: start %d (ring buf %d bytes)\n",
589                    reg->stream, stnr, st->cbl);
590             intel_hda_parse_bdl(d, st);
591             intel_hda_notify_codecs(d, stnr, true, output);
592         } else {
593             /* stop */
594             dprint(d, 1, "st #%d: stop %d\n", reg->stream, stnr);
595             intel_hda_notify_codecs(d, stnr, false, output);
596         }
597     }
598     intel_hda_update_irq(d);
599 }
600 
601 /* --------------------------------------------------------------------- */
602 
603 #define ST_REG(_n, _o) (0x80 + (_n) * 0x20 + (_o))
604 
605 static const struct IntelHDAReg regtab[] = {
606     /* global */
607     [ ICH6_REG_GCAP ] = {
608         .name     = "GCAP",
609         .size     = 2,
610         .reset    = 0x4401,
611     },
612     [ ICH6_REG_VMIN ] = {
613         .name     = "VMIN",
614         .size     = 1,
615     },
616     [ ICH6_REG_VMAJ ] = {
617         .name     = "VMAJ",
618         .size     = 1,
619         .reset    = 1,
620     },
621     [ ICH6_REG_OUTPAY ] = {
622         .name     = "OUTPAY",
623         .size     = 2,
624         .reset    = 0x3c,
625     },
626     [ ICH6_REG_INPAY ] = {
627         .name     = "INPAY",
628         .size     = 2,
629         .reset    = 0x1d,
630     },
631     [ ICH6_REG_GCTL ] = {
632         .name     = "GCTL",
633         .size     = 4,
634         .wmask    = 0x0103,
635         .offset   = offsetof(IntelHDAState, g_ctl),
636         .whandler = intel_hda_set_g_ctl,
637     },
638     [ ICH6_REG_WAKEEN ] = {
639         .name     = "WAKEEN",
640         .size     = 2,
641         .wmask    = 0x7fff,
642         .offset   = offsetof(IntelHDAState, wake_en),
643         .whandler = intel_hda_set_wake_en,
644     },
645     [ ICH6_REG_STATESTS ] = {
646         .name     = "STATESTS",
647         .size     = 2,
648         .wmask    = 0x7fff,
649         .wclear   = 0x7fff,
650         .offset   = offsetof(IntelHDAState, state_sts),
651         .whandler = intel_hda_set_state_sts,
652     },
653 
654     /* interrupts */
655     [ ICH6_REG_INTCTL ] = {
656         .name     = "INTCTL",
657         .size     = 4,
658         .wmask    = 0xc00000ff,
659         .offset   = offsetof(IntelHDAState, int_ctl),
660         .whandler = intel_hda_set_int_ctl,
661     },
662     [ ICH6_REG_INTSTS ] = {
663         .name     = "INTSTS",
664         .size     = 4,
665         .wmask    = 0xc00000ff,
666         .wclear   = 0xc00000ff,
667         .offset   = offsetof(IntelHDAState, int_sts),
668     },
669 
670     /* misc */
671     [ ICH6_REG_WALLCLK ] = {
672         .name     = "WALLCLK",
673         .size     = 4,
674         .offset   = offsetof(IntelHDAState, wall_clk),
675         .rhandler = intel_hda_get_wall_clk,
676     },
677     [ ICH6_REG_WALLCLK + 0x2000 ] = {
678         .name     = "WALLCLK(alias)",
679         .size     = 4,
680         .offset   = offsetof(IntelHDAState, wall_clk),
681         .rhandler = intel_hda_get_wall_clk,
682     },
683 
684     /* dma engine */
685     [ ICH6_REG_CORBLBASE ] = {
686         .name     = "CORBLBASE",
687         .size     = 4,
688         .wmask    = 0xffffff80,
689         .offset   = offsetof(IntelHDAState, corb_lbase),
690     },
691     [ ICH6_REG_CORBUBASE ] = {
692         .name     = "CORBUBASE",
693         .size     = 4,
694         .wmask    = 0xffffffff,
695         .offset   = offsetof(IntelHDAState, corb_ubase),
696     },
697     [ ICH6_REG_CORBWP ] = {
698         .name     = "CORBWP",
699         .size     = 2,
700         .wmask    = 0xff,
701         .offset   = offsetof(IntelHDAState, corb_wp),
702         .whandler = intel_hda_set_corb_wp,
703     },
704     [ ICH6_REG_CORBRP ] = {
705         .name     = "CORBRP",
706         .size     = 2,
707         .wmask    = 0x80ff,
708         .offset   = offsetof(IntelHDAState, corb_rp),
709     },
710     [ ICH6_REG_CORBCTL ] = {
711         .name     = "CORBCTL",
712         .size     = 1,
713         .wmask    = 0x03,
714         .offset   = offsetof(IntelHDAState, corb_ctl),
715         .whandler = intel_hda_set_corb_ctl,
716     },
717     [ ICH6_REG_CORBSTS ] = {
718         .name     = "CORBSTS",
719         .size     = 1,
720         .wmask    = 0x01,
721         .wclear   = 0x01,
722         .offset   = offsetof(IntelHDAState, corb_sts),
723     },
724     [ ICH6_REG_CORBSIZE ] = {
725         .name     = "CORBSIZE",
726         .size     = 1,
727         .reset    = 0x42,
728         .offset   = offsetof(IntelHDAState, corb_size),
729     },
730     [ ICH6_REG_RIRBLBASE ] = {
731         .name     = "RIRBLBASE",
732         .size     = 4,
733         .wmask    = 0xffffff80,
734         .offset   = offsetof(IntelHDAState, rirb_lbase),
735     },
736     [ ICH6_REG_RIRBUBASE ] = {
737         .name     = "RIRBUBASE",
738         .size     = 4,
739         .wmask    = 0xffffffff,
740         .offset   = offsetof(IntelHDAState, rirb_ubase),
741     },
742     [ ICH6_REG_RIRBWP ] = {
743         .name     = "RIRBWP",
744         .size     = 2,
745         .wmask    = 0x8000,
746         .offset   = offsetof(IntelHDAState, rirb_wp),
747         .whandler = intel_hda_set_rirb_wp,
748     },
749     [ ICH6_REG_RINTCNT ] = {
750         .name     = "RINTCNT",
751         .size     = 2,
752         .wmask    = 0xff,
753         .offset   = offsetof(IntelHDAState, rirb_cnt),
754     },
755     [ ICH6_REG_RIRBCTL ] = {
756         .name     = "RIRBCTL",
757         .size     = 1,
758         .wmask    = 0x07,
759         .offset   = offsetof(IntelHDAState, rirb_ctl),
760     },
761     [ ICH6_REG_RIRBSTS ] = {
762         .name     = "RIRBSTS",
763         .size     = 1,
764         .wmask    = 0x05,
765         .wclear   = 0x05,
766         .offset   = offsetof(IntelHDAState, rirb_sts),
767         .whandler = intel_hda_set_rirb_sts,
768     },
769     [ ICH6_REG_RIRBSIZE ] = {
770         .name     = "RIRBSIZE",
771         .size     = 1,
772         .reset    = 0x42,
773         .offset   = offsetof(IntelHDAState, rirb_size),
774     },
775 
776     [ ICH6_REG_DPLBASE ] = {
777         .name     = "DPLBASE",
778         .size     = 4,
779         .wmask    = 0xffffff81,
780         .offset   = offsetof(IntelHDAState, dp_lbase),
781     },
782     [ ICH6_REG_DPUBASE ] = {
783         .name     = "DPUBASE",
784         .size     = 4,
785         .wmask    = 0xffffffff,
786         .offset   = offsetof(IntelHDAState, dp_ubase),
787     },
788 
789     [ ICH6_REG_IC ] = {
790         .name     = "ICW",
791         .size     = 4,
792         .wmask    = 0xffffffff,
793         .offset   = offsetof(IntelHDAState, icw),
794     },
795     [ ICH6_REG_IR ] = {
796         .name     = "IRR",
797         .size     = 4,
798         .offset   = offsetof(IntelHDAState, irr),
799     },
800     [ ICH6_REG_IRS ] = {
801         .name     = "ICS",
802         .size     = 2,
803         .wmask    = 0x0003,
804         .wclear   = 0x0002,
805         .offset   = offsetof(IntelHDAState, ics),
806         .whandler = intel_hda_set_ics,
807     },
808 
809 #define HDA_STREAM(_t, _i)                                            \
810     [ ST_REG(_i, ICH6_REG_SD_CTL) ] = {                               \
811         .stream   = _i,                                               \
812         .name     = _t stringify(_i) " CTL",                          \
813         .size     = 4,                                                \
814         .wmask    = 0x1cff001f,                                       \
815         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
816         .whandler = intel_hda_set_st_ctl,                             \
817     },                                                                \
818     [ ST_REG(_i, ICH6_REG_SD_CTL) + 2] = {                            \
819         .stream   = _i,                                               \
820         .name     = _t stringify(_i) " CTL(stnr)",                    \
821         .size     = 1,                                                \
822         .shift    = 16,                                               \
823         .wmask    = 0x00ff0000,                                       \
824         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
825         .whandler = intel_hda_set_st_ctl,                             \
826     },                                                                \
827     [ ST_REG(_i, ICH6_REG_SD_STS)] = {                                \
828         .stream   = _i,                                               \
829         .name     = _t stringify(_i) " CTL(sts)",                     \
830         .size     = 1,                                                \
831         .shift    = 24,                                               \
832         .wmask    = 0x1c000000,                                       \
833         .wclear   = 0x1c000000,                                       \
834         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
835         .whandler = intel_hda_set_st_ctl,                             \
836         .reset    = SD_STS_FIFO_READY << 24                           \
837     },                                                                \
838     [ ST_REG(_i, ICH6_REG_SD_LPIB) ] = {                              \
839         .stream   = _i,                                               \
840         .name     = _t stringify(_i) " LPIB",                         \
841         .size     = 4,                                                \
842         .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
843     },                                                                \
844     [ ST_REG(_i, ICH6_REG_SD_LPIB) + 0x2000 ] = {                     \
845         .stream   = _i,                                               \
846         .name     = _t stringify(_i) " LPIB(alias)",                  \
847         .size     = 4,                                                \
848         .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
849     },                                                                \
850     [ ST_REG(_i, ICH6_REG_SD_CBL) ] = {                               \
851         .stream   = _i,                                               \
852         .name     = _t stringify(_i) " CBL",                          \
853         .size     = 4,                                                \
854         .wmask    = 0xffffffff,                                       \
855         .offset   = offsetof(IntelHDAState, st[_i].cbl),              \
856     },                                                                \
857     [ ST_REG(_i, ICH6_REG_SD_LVI) ] = {                               \
858         .stream   = _i,                                               \
859         .name     = _t stringify(_i) " LVI",                          \
860         .size     = 2,                                                \
861         .wmask    = 0x00ff,                                           \
862         .offset   = offsetof(IntelHDAState, st[_i].lvi),              \
863     },                                                                \
864     [ ST_REG(_i, ICH6_REG_SD_FIFOSIZE) ] = {                          \
865         .stream   = _i,                                               \
866         .name     = _t stringify(_i) " FIFOS",                        \
867         .size     = 2,                                                \
868         .reset    = HDA_BUFFER_SIZE,                                  \
869     },                                                                \
870     [ ST_REG(_i, ICH6_REG_SD_FORMAT) ] = {                            \
871         .stream   = _i,                                               \
872         .name     = _t stringify(_i) " FMT",                          \
873         .size     = 2,                                                \
874         .wmask    = 0x7f7f,                                           \
875         .offset   = offsetof(IntelHDAState, st[_i].fmt),              \
876     },                                                                \
877     [ ST_REG(_i, ICH6_REG_SD_BDLPL) ] = {                             \
878         .stream   = _i,                                               \
879         .name     = _t stringify(_i) " BDLPL",                        \
880         .size     = 4,                                                \
881         .wmask    = 0xffffff80,                                       \
882         .offset   = offsetof(IntelHDAState, st[_i].bdlp_lbase),       \
883     },                                                                \
884     [ ST_REG(_i, ICH6_REG_SD_BDLPU) ] = {                             \
885         .stream   = _i,                                               \
886         .name     = _t stringify(_i) " BDLPU",                        \
887         .size     = 4,                                                \
888         .wmask    = 0xffffffff,                                       \
889         .offset   = offsetof(IntelHDAState, st[_i].bdlp_ubase),       \
890     },                                                                \
891 
892     HDA_STREAM("IN", 0)
893     HDA_STREAM("IN", 1)
894     HDA_STREAM("IN", 2)
895     HDA_STREAM("IN", 3)
896 
897     HDA_STREAM("OUT", 4)
898     HDA_STREAM("OUT", 5)
899     HDA_STREAM("OUT", 6)
900     HDA_STREAM("OUT", 7)
901 
902 };
903 
904 static const IntelHDAReg *intel_hda_reg_find(IntelHDAState *d, hwaddr addr)
905 {
906     const IntelHDAReg *reg;
907 
908     if (addr >= ARRAY_SIZE(regtab)) {
909         goto noreg;
910     }
911     reg = regtab+addr;
912     if (reg->name == NULL) {
913         goto noreg;
914     }
915     return reg;
916 
917 noreg:
918     dprint(d, 1, "unknown register, addr 0x%x\n", (int) addr);
919     return NULL;
920 }
921 
922 static uint32_t *intel_hda_reg_addr(IntelHDAState *d, const IntelHDAReg *reg)
923 {
924     uint8_t *addr = (void*)d;
925 
926     addr += reg->offset;
927     return (uint32_t*)addr;
928 }
929 
930 static void intel_hda_reg_write(IntelHDAState *d, const IntelHDAReg *reg, uint32_t val,
931                                 uint32_t wmask)
932 {
933     uint32_t *addr;
934     uint32_t old;
935 
936     if (!reg) {
937         return;
938     }
939 
940     if (d->debug) {
941         time_t now = time(NULL);
942         if (d->last_write && d->last_reg == reg && d->last_val == val) {
943             d->repeat_count++;
944             if (d->last_sec != now) {
945                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
946                 d->last_sec = now;
947                 d->repeat_count = 0;
948             }
949         } else {
950             if (d->repeat_count) {
951                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
952             }
953             dprint(d, 2, "write %-16s: 0x%x (%x)\n", reg->name, val, wmask);
954             d->last_write = 1;
955             d->last_reg   = reg;
956             d->last_val   = val;
957             d->last_sec   = now;
958             d->repeat_count = 0;
959         }
960     }
961     assert(reg->offset != 0);
962 
963     addr = intel_hda_reg_addr(d, reg);
964     old = *addr;
965 
966     if (reg->shift) {
967         val <<= reg->shift;
968         wmask <<= reg->shift;
969     }
970     wmask &= reg->wmask;
971     *addr &= ~wmask;
972     *addr |= wmask & val;
973     *addr &= ~(val & reg->wclear);
974 
975     if (reg->whandler) {
976         reg->whandler(d, reg, old);
977     }
978 }
979 
980 static uint32_t intel_hda_reg_read(IntelHDAState *d, const IntelHDAReg *reg,
981                                    uint32_t rmask)
982 {
983     uint32_t *addr, ret;
984 
985     if (!reg) {
986         return 0;
987     }
988 
989     if (reg->rhandler) {
990         reg->rhandler(d, reg);
991     }
992 
993     if (reg->offset == 0) {
994         /* constant read-only register */
995         ret = reg->reset;
996     } else {
997         addr = intel_hda_reg_addr(d, reg);
998         ret = *addr;
999         if (reg->shift) {
1000             ret >>= reg->shift;
1001         }
1002         ret &= rmask;
1003     }
1004     if (d->debug) {
1005         time_t now = time(NULL);
1006         if (!d->last_write && d->last_reg == reg && d->last_val == ret) {
1007             d->repeat_count++;
1008             if (d->last_sec != now) {
1009                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
1010                 d->last_sec = now;
1011                 d->repeat_count = 0;
1012             }
1013         } else {
1014             if (d->repeat_count) {
1015                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
1016             }
1017             dprint(d, 2, "read  %-16s: 0x%x (%x)\n", reg->name, ret, rmask);
1018             d->last_write = 0;
1019             d->last_reg   = reg;
1020             d->last_val   = ret;
1021             d->last_sec   = now;
1022             d->repeat_count = 0;
1023         }
1024     }
1025     return ret;
1026 }
1027 
1028 static void intel_hda_regs_reset(IntelHDAState *d)
1029 {
1030     uint32_t *addr;
1031     int i;
1032 
1033     for (i = 0; i < ARRAY_SIZE(regtab); i++) {
1034         if (regtab[i].name == NULL) {
1035             continue;
1036         }
1037         if (regtab[i].offset == 0) {
1038             continue;
1039         }
1040         addr = intel_hda_reg_addr(d, regtab + i);
1041         *addr = regtab[i].reset;
1042     }
1043 }
1044 
1045 /* --------------------------------------------------------------------- */
1046 
1047 static void intel_hda_mmio_write(void *opaque, hwaddr addr, uint64_t val,
1048                                  unsigned size)
1049 {
1050     IntelHDAState *d = opaque;
1051     const IntelHDAReg *reg = intel_hda_reg_find(d, addr);
1052 
1053     intel_hda_reg_write(d, reg, val, MAKE_64BIT_MASK(0, size * 8));
1054 }
1055 
1056 static uint64_t intel_hda_mmio_read(void *opaque, hwaddr addr, unsigned size)
1057 {
1058     IntelHDAState *d = opaque;
1059     const IntelHDAReg *reg = intel_hda_reg_find(d, addr);
1060 
1061     return intel_hda_reg_read(d, reg, MAKE_64BIT_MASK(0, size * 8));
1062 }
1063 
1064 static const MemoryRegionOps intel_hda_mmio_ops = {
1065     .read = intel_hda_mmio_read,
1066     .write = intel_hda_mmio_write,
1067     .impl = {
1068         .min_access_size = 1,
1069         .max_access_size = 4,
1070     },
1071     .endianness = DEVICE_NATIVE_ENDIAN,
1072 };
1073 
1074 /* --------------------------------------------------------------------- */
1075 
1076 static void intel_hda_reset(DeviceState *dev)
1077 {
1078     BusChild *kid;
1079     IntelHDAState *d = INTEL_HDA(dev);
1080     HDACodecDevice *cdev;
1081 
1082     intel_hda_regs_reset(d);
1083     d->wall_base_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1084 
1085     /* reset codecs */
1086     QTAILQ_FOREACH(kid, &d->codecs.qbus.children, sibling) {
1087         DeviceState *qdev = kid->child;
1088         cdev = HDA_CODEC_DEVICE(qdev);
1089         device_reset(DEVICE(cdev));
1090         d->state_sts |= (1 << cdev->cad);
1091     }
1092     intel_hda_update_irq(d);
1093 }
1094 
1095 static void intel_hda_realize(PCIDevice *pci, Error **errp)
1096 {
1097     IntelHDAState *d = INTEL_HDA(pci);
1098     uint8_t *conf = d->pci.config;
1099     Error *err = NULL;
1100     int ret;
1101 
1102     d->name = object_get_typename(OBJECT(d));
1103 
1104     pci_config_set_interrupt_pin(conf, 1);
1105 
1106     /* HDCTL off 0x40 bit 0 selects signaling mode (1-HDA, 0 - Ac97) 18.1.19 */
1107     conf[0x40] = 0x01;
1108 
1109     if (d->msi != ON_OFF_AUTO_OFF) {
1110         ret = msi_init(&d->pci, d->old_msi_addr ? 0x50 : 0x60,
1111                        1, true, false, &err);
1112         /* Any error other than -ENOTSUP(board's MSI support is broken)
1113          * is a programming error */
1114         assert(!ret || ret == -ENOTSUP);
1115         if (ret && d->msi == ON_OFF_AUTO_ON) {
1116             /* Can't satisfy user's explicit msi=on request, fail */
1117             error_append_hint(&err, "You have to use msi=auto (default) or "
1118                     "msi=off with this machine type.\n");
1119             error_propagate(errp, err);
1120             return;
1121         }
1122         assert(!err || d->msi == ON_OFF_AUTO_AUTO);
1123         /* With msi=auto, we fall back to MSI off silently */
1124         error_free(err);
1125     }
1126 
1127     memory_region_init_io(&d->mmio, OBJECT(d), &intel_hda_mmio_ops, d,
1128                           "intel-hda", 0x4000);
1129     pci_register_bar(&d->pci, 0, 0, &d->mmio);
1130 
1131     hda_codec_bus_init(DEVICE(pci), &d->codecs, sizeof(d->codecs),
1132                        intel_hda_response, intel_hda_xfer);
1133 }
1134 
1135 static void intel_hda_exit(PCIDevice *pci)
1136 {
1137     IntelHDAState *d = INTEL_HDA(pci);
1138 
1139     msi_uninit(&d->pci);
1140 }
1141 
1142 static int intel_hda_post_load(void *opaque, int version)
1143 {
1144     IntelHDAState* d = opaque;
1145     int i;
1146 
1147     dprint(d, 1, "%s\n", __func__);
1148     for (i = 0; i < ARRAY_SIZE(d->st); i++) {
1149         if (d->st[i].ctl & 0x02) {
1150             intel_hda_parse_bdl(d, &d->st[i]);
1151         }
1152     }
1153     intel_hda_update_irq(d);
1154     return 0;
1155 }
1156 
1157 static const VMStateDescription vmstate_intel_hda_stream = {
1158     .name = "intel-hda-stream",
1159     .version_id = 1,
1160     .fields = (VMStateField[]) {
1161         VMSTATE_UINT32(ctl, IntelHDAStream),
1162         VMSTATE_UINT32(lpib, IntelHDAStream),
1163         VMSTATE_UINT32(cbl, IntelHDAStream),
1164         VMSTATE_UINT32(lvi, IntelHDAStream),
1165         VMSTATE_UINT32(fmt, IntelHDAStream),
1166         VMSTATE_UINT32(bdlp_lbase, IntelHDAStream),
1167         VMSTATE_UINT32(bdlp_ubase, IntelHDAStream),
1168         VMSTATE_END_OF_LIST()
1169     }
1170 };
1171 
1172 static const VMStateDescription vmstate_intel_hda = {
1173     .name = "intel-hda",
1174     .version_id = 1,
1175     .post_load = intel_hda_post_load,
1176     .fields = (VMStateField[]) {
1177         VMSTATE_PCI_DEVICE(pci, IntelHDAState),
1178 
1179         /* registers */
1180         VMSTATE_UINT32(g_ctl, IntelHDAState),
1181         VMSTATE_UINT32(wake_en, IntelHDAState),
1182         VMSTATE_UINT32(state_sts, IntelHDAState),
1183         VMSTATE_UINT32(int_ctl, IntelHDAState),
1184         VMSTATE_UINT32(int_sts, IntelHDAState),
1185         VMSTATE_UINT32(wall_clk, IntelHDAState),
1186         VMSTATE_UINT32(corb_lbase, IntelHDAState),
1187         VMSTATE_UINT32(corb_ubase, IntelHDAState),
1188         VMSTATE_UINT32(corb_rp, IntelHDAState),
1189         VMSTATE_UINT32(corb_wp, IntelHDAState),
1190         VMSTATE_UINT32(corb_ctl, IntelHDAState),
1191         VMSTATE_UINT32(corb_sts, IntelHDAState),
1192         VMSTATE_UINT32(corb_size, IntelHDAState),
1193         VMSTATE_UINT32(rirb_lbase, IntelHDAState),
1194         VMSTATE_UINT32(rirb_ubase, IntelHDAState),
1195         VMSTATE_UINT32(rirb_wp, IntelHDAState),
1196         VMSTATE_UINT32(rirb_cnt, IntelHDAState),
1197         VMSTATE_UINT32(rirb_ctl, IntelHDAState),
1198         VMSTATE_UINT32(rirb_sts, IntelHDAState),
1199         VMSTATE_UINT32(rirb_size, IntelHDAState),
1200         VMSTATE_UINT32(dp_lbase, IntelHDAState),
1201         VMSTATE_UINT32(dp_ubase, IntelHDAState),
1202         VMSTATE_UINT32(icw, IntelHDAState),
1203         VMSTATE_UINT32(irr, IntelHDAState),
1204         VMSTATE_UINT32(ics, IntelHDAState),
1205         VMSTATE_STRUCT_ARRAY(st, IntelHDAState, 8, 0,
1206                              vmstate_intel_hda_stream,
1207                              IntelHDAStream),
1208 
1209         /* additional state info */
1210         VMSTATE_UINT32(rirb_count, IntelHDAState),
1211         VMSTATE_INT64(wall_base_ns, IntelHDAState),
1212 
1213         VMSTATE_END_OF_LIST()
1214     }
1215 };
1216 
1217 static Property intel_hda_properties[] = {
1218     DEFINE_PROP_UINT32("debug", IntelHDAState, debug, 0),
1219     DEFINE_PROP_ON_OFF_AUTO("msi", IntelHDAState, msi, ON_OFF_AUTO_AUTO),
1220     DEFINE_PROP_BOOL("old_msi_addr", IntelHDAState, old_msi_addr, false),
1221     DEFINE_PROP_END_OF_LIST(),
1222 };
1223 
1224 static void intel_hda_class_init(ObjectClass *klass, void *data)
1225 {
1226     DeviceClass *dc = DEVICE_CLASS(klass);
1227     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1228 
1229     k->realize = intel_hda_realize;
1230     k->exit = intel_hda_exit;
1231     k->vendor_id = PCI_VENDOR_ID_INTEL;
1232     k->class_id = PCI_CLASS_MULTIMEDIA_HD_AUDIO;
1233     dc->reset = intel_hda_reset;
1234     dc->vmsd = &vmstate_intel_hda;
1235     dc->props = intel_hda_properties;
1236 }
1237 
1238 static void intel_hda_class_init_ich6(ObjectClass *klass, void *data)
1239 {
1240     DeviceClass *dc = DEVICE_CLASS(klass);
1241     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1242 
1243     k->device_id = 0x2668;
1244     k->revision = 1;
1245     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1246     dc->desc = "Intel HD Audio Controller (ich6)";
1247 }
1248 
1249 static void intel_hda_class_init_ich9(ObjectClass *klass, void *data)
1250 {
1251     DeviceClass *dc = DEVICE_CLASS(klass);
1252     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1253 
1254     k->device_id = 0x293e;
1255     k->revision = 3;
1256     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1257     dc->desc = "Intel HD Audio Controller (ich9)";
1258 }
1259 
1260 static const TypeInfo intel_hda_info = {
1261     .name          = TYPE_INTEL_HDA_GENERIC,
1262     .parent        = TYPE_PCI_DEVICE,
1263     .instance_size = sizeof(IntelHDAState),
1264     .class_init    = intel_hda_class_init,
1265     .abstract      = true,
1266     .interfaces = (InterfaceInfo[]) {
1267         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
1268         { },
1269     },
1270 };
1271 
1272 static const TypeInfo intel_hda_info_ich6 = {
1273     .name          = "intel-hda",
1274     .parent        = TYPE_INTEL_HDA_GENERIC,
1275     .class_init    = intel_hda_class_init_ich6,
1276 };
1277 
1278 static const TypeInfo intel_hda_info_ich9 = {
1279     .name          = "ich9-intel-hda",
1280     .parent        = TYPE_INTEL_HDA_GENERIC,
1281     .class_init    = intel_hda_class_init_ich9,
1282 };
1283 
1284 static void hda_codec_device_class_init(ObjectClass *klass, void *data)
1285 {
1286     DeviceClass *k = DEVICE_CLASS(klass);
1287     k->realize = hda_codec_dev_realize;
1288     k->unrealize = hda_codec_dev_unrealize;
1289     set_bit(DEVICE_CATEGORY_SOUND, k->categories);
1290     k->bus_type = TYPE_HDA_BUS;
1291     k->props = hda_props;
1292 }
1293 
1294 static const TypeInfo hda_codec_device_type_info = {
1295     .name = TYPE_HDA_CODEC_DEVICE,
1296     .parent = TYPE_DEVICE,
1297     .instance_size = sizeof(HDACodecDevice),
1298     .abstract = true,
1299     .class_size = sizeof(HDACodecDeviceClass),
1300     .class_init = hda_codec_device_class_init,
1301 };
1302 
1303 /*
1304  * create intel hda controller with codec attached to it,
1305  * so '-soundhw hda' works.
1306  */
1307 static int intel_hda_and_codec_init(PCIBus *bus)
1308 {
1309     DeviceState *controller;
1310     BusState *hdabus;
1311     DeviceState *codec;
1312 
1313     controller = DEVICE(pci_create_simple(bus, -1, "intel-hda"));
1314     hdabus = QLIST_FIRST(&controller->child_bus);
1315     codec = qdev_create(hdabus, "hda-duplex");
1316     qdev_init_nofail(codec);
1317     return 0;
1318 }
1319 
1320 static void intel_hda_register_types(void)
1321 {
1322     type_register_static(&hda_codec_bus_info);
1323     type_register_static(&intel_hda_info);
1324     type_register_static(&intel_hda_info_ich6);
1325     type_register_static(&intel_hda_info_ich9);
1326     type_register_static(&hda_codec_device_type_info);
1327     pci_register_soundhw("hda", "Intel HD Audio", intel_hda_and_codec_init);
1328 }
1329 
1330 type_init(intel_hda_register_types)
1331