xref: /openbmc/qemu/hw/audio/intel-hda.c (revision ba632924)
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 "qemu/log.h"
27 #include "hw/audio/soundhw.h"
28 #include "intel-hda.h"
29 #include "intel-hda-defs.h"
30 #include "sysemu/dma.h"
31 #include "qapi/error.h"
32 
33 /* --------------------------------------------------------------------- */
34 /* hda bus                                                               */
35 
36 static Property hda_props[] = {
37     DEFINE_PROP_UINT32("cad", HDACodecDevice, cad, -1),
38     DEFINE_PROP_END_OF_LIST()
39 };
40 
41 static const TypeInfo hda_codec_bus_info = {
42     .name = TYPE_HDA_BUS,
43     .parent = TYPE_BUS,
44     .instance_size = sizeof(HDACodecBus),
45 };
46 
47 void hda_codec_bus_init(DeviceState *dev, HDACodecBus *bus, size_t bus_size,
48                         hda_codec_response_func response,
49                         hda_codec_xfer_func xfer)
50 {
51     qbus_create_inplace(bus, bus_size, TYPE_HDA_BUS, dev, NULL);
52     bus->response = response;
53     bus->xfer = xfer;
54 }
55 
56 static void hda_codec_dev_realize(DeviceState *qdev, Error **errp)
57 {
58     HDACodecBus *bus = HDA_BUS(qdev->parent_bus);
59     HDACodecDevice *dev = HDA_CODEC_DEVICE(qdev);
60     HDACodecDeviceClass *cdc = HDA_CODEC_DEVICE_GET_CLASS(dev);
61 
62     if (dev->cad == -1) {
63         dev->cad = bus->next_cad;
64     }
65     if (dev->cad >= 15) {
66         error_setg(errp, "HDA audio codec address is full");
67         return;
68     }
69     bus->next_cad = dev->cad + 1;
70     if (cdc->init(dev) != 0) {
71         error_setg(errp, "HDA audio init failed");
72     }
73 }
74 
75 static void hda_codec_dev_unrealize(DeviceState *qdev, Error **errp)
76 {
77     HDACodecDevice *dev = HDA_CODEC_DEVICE(qdev);
78     HDACodecDeviceClass *cdc = HDA_CODEC_DEVICE_GET_CLASS(dev);
79 
80     if (cdc->exit) {
81         cdc->exit(dev);
82     }
83 }
84 
85 HDACodecDevice *hda_codec_find(HDACodecBus *bus, uint32_t cad)
86 {
87     BusChild *kid;
88     HDACodecDevice *cdev;
89 
90     QTAILQ_FOREACH(kid, &bus->qbus.children, sibling) {
91         DeviceState *qdev = kid->child;
92         cdev = HDA_CODEC_DEVICE(qdev);
93         if (cdev->cad == cad) {
94             return cdev;
95         }
96     }
97     return NULL;
98 }
99 
100 void hda_codec_response(HDACodecDevice *dev, bool solicited, uint32_t response)
101 {
102     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
103     bus->response(dev, solicited, response);
104 }
105 
106 bool hda_codec_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
107                     uint8_t *buf, uint32_t len)
108 {
109     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
110     return bus->xfer(dev, stnr, output, buf, len);
111 }
112 
113 /* --------------------------------------------------------------------- */
114 /* intel hda emulation                                                   */
115 
116 typedef struct IntelHDAStream IntelHDAStream;
117 typedef struct IntelHDAState IntelHDAState;
118 typedef struct IntelHDAReg IntelHDAReg;
119 
120 typedef struct bpl {
121     uint64_t addr;
122     uint32_t len;
123     uint32_t flags;
124 } bpl;
125 
126 struct IntelHDAStream {
127     /* registers */
128     uint32_t ctl;
129     uint32_t lpib;
130     uint32_t cbl;
131     uint32_t lvi;
132     uint32_t fmt;
133     uint32_t bdlp_lbase;
134     uint32_t bdlp_ubase;
135 
136     /* state */
137     bpl      *bpl;
138     uint32_t bentries;
139     uint32_t bsize, be, bp;
140 };
141 
142 struct IntelHDAState {
143     PCIDevice pci;
144     const char *name;
145     HDACodecBus codecs;
146 
147     /* registers */
148     uint32_t g_ctl;
149     uint32_t wake_en;
150     uint32_t state_sts;
151     uint32_t int_ctl;
152     uint32_t int_sts;
153     uint32_t wall_clk;
154 
155     uint32_t corb_lbase;
156     uint32_t corb_ubase;
157     uint32_t corb_rp;
158     uint32_t corb_wp;
159     uint32_t corb_ctl;
160     uint32_t corb_sts;
161     uint32_t corb_size;
162 
163     uint32_t rirb_lbase;
164     uint32_t rirb_ubase;
165     uint32_t rirb_wp;
166     uint32_t rirb_cnt;
167     uint32_t rirb_ctl;
168     uint32_t rirb_sts;
169     uint32_t rirb_size;
170 
171     uint32_t dp_lbase;
172     uint32_t dp_ubase;
173 
174     uint32_t icw;
175     uint32_t irr;
176     uint32_t ics;
177 
178     /* streams */
179     IntelHDAStream st[8];
180 
181     /* state */
182     MemoryRegion mmio;
183     uint32_t rirb_count;
184     int64_t wall_base_ns;
185 
186     /* debug logging */
187     const IntelHDAReg *last_reg;
188     uint32_t last_val;
189     uint32_t last_write;
190     uint32_t last_sec;
191     uint32_t repeat_count;
192 
193     /* properties */
194     uint32_t debug;
195     OnOffAuto msi;
196     bool old_msi_addr;
197 };
198 
199 #define TYPE_INTEL_HDA_GENERIC "intel-hda-generic"
200 
201 #define INTEL_HDA(obj) \
202     OBJECT_CHECK(IntelHDAState, (obj), TYPE_INTEL_HDA_GENERIC)
203 
204 struct IntelHDAReg {
205     const char *name;      /* register name */
206     uint32_t   size;       /* size in bytes */
207     uint32_t   reset;      /* reset value */
208     uint32_t   wmask;      /* write mask */
209     uint32_t   wclear;     /* write 1 to clear bits */
210     uint32_t   offset;     /* location in IntelHDAState */
211     uint32_t   shift;      /* byte access entries for dwords */
212     uint32_t   stream;
213     void       (*whandler)(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old);
214     void       (*rhandler)(IntelHDAState *d, const IntelHDAReg *reg);
215 };
216 
217 static void intel_hda_reset(DeviceState *dev);
218 
219 /* --------------------------------------------------------------------- */
220 
221 static hwaddr intel_hda_addr(uint32_t lbase, uint32_t ubase)
222 {
223     return ((uint64_t)ubase << 32) | lbase;
224 }
225 
226 static void intel_hda_update_int_sts(IntelHDAState *d)
227 {
228     uint32_t sts = 0;
229     uint32_t i;
230 
231     /* update controller status */
232     if (d->rirb_sts & ICH6_RBSTS_IRQ) {
233         sts |= (1 << 30);
234     }
235     if (d->rirb_sts & ICH6_RBSTS_OVERRUN) {
236         sts |= (1 << 30);
237     }
238     if (d->state_sts & d->wake_en) {
239         sts |= (1 << 30);
240     }
241 
242     /* update stream status */
243     for (i = 0; i < 8; i++) {
244         /* buffer completion interrupt */
245         if (d->st[i].ctl & (1 << 26)) {
246             sts |= (1 << i);
247         }
248     }
249 
250     /* update global status */
251     if (sts & d->int_ctl) {
252         sts |= (1U << 31);
253     }
254 
255     d->int_sts = sts;
256 }
257 
258 static void intel_hda_update_irq(IntelHDAState *d)
259 {
260     bool msi = msi_enabled(&d->pci);
261     int level;
262 
263     intel_hda_update_int_sts(d);
264     if (d->int_sts & (1U << 31) && d->int_ctl & (1U << 31)) {
265         level = 1;
266     } else {
267         level = 0;
268     }
269     dprint(d, 2, "%s: level %d [%s]\n", __func__,
270            level, msi ? "msi" : "intx");
271     if (msi) {
272         if (level) {
273             msi_notify(&d->pci, 0);
274         }
275     } else {
276         pci_set_irq(&d->pci, level);
277     }
278 }
279 
280 static int intel_hda_send_command(IntelHDAState *d, uint32_t verb)
281 {
282     uint32_t cad, nid, data;
283     HDACodecDevice *codec;
284     HDACodecDeviceClass *cdc;
285 
286     cad = (verb >> 28) & 0x0f;
287     if (verb & (1 << 27)) {
288         /* indirect node addressing, not specified in HDA 1.0 */
289         dprint(d, 1, "%s: indirect node addressing (guest bug?)\n", __func__);
290         return -1;
291     }
292     nid = (verb >> 20) & 0x7f;
293     data = verb & 0xfffff;
294 
295     codec = hda_codec_find(&d->codecs, cad);
296     if (codec == NULL) {
297         dprint(d, 1, "%s: addressed non-existing codec\n", __func__);
298         return -1;
299     }
300     cdc = HDA_CODEC_DEVICE_GET_CLASS(codec);
301     cdc->command(codec, nid, data);
302     return 0;
303 }
304 
305 static void intel_hda_corb_run(IntelHDAState *d)
306 {
307     hwaddr addr;
308     uint32_t rp, verb;
309 
310     if (d->ics & ICH6_IRS_BUSY) {
311         dprint(d, 2, "%s: [icw] verb 0x%08x\n", __func__, d->icw);
312         intel_hda_send_command(d, d->icw);
313         return;
314     }
315 
316     for (;;) {
317         if (!(d->corb_ctl & ICH6_CORBCTL_RUN)) {
318             dprint(d, 2, "%s: !run\n", __func__);
319             return;
320         }
321         if ((d->corb_rp & 0xff) == d->corb_wp) {
322             dprint(d, 2, "%s: corb ring empty\n", __func__);
323             return;
324         }
325         if (d->rirb_count == d->rirb_cnt) {
326             dprint(d, 2, "%s: rirb count reached\n", __func__);
327             return;
328         }
329 
330         rp = (d->corb_rp + 1) & 0xff;
331         addr = intel_hda_addr(d->corb_lbase, d->corb_ubase);
332         verb = ldl_le_pci_dma(&d->pci, addr + 4*rp);
333         d->corb_rp = rp;
334 
335         dprint(d, 2, "%s: [rp 0x%x] verb 0x%08x\n", __func__, rp, verb);
336         intel_hda_send_command(d, verb);
337     }
338 }
339 
340 static void intel_hda_response(HDACodecDevice *dev, bool solicited, uint32_t response)
341 {
342     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
343     IntelHDAState *d = container_of(bus, IntelHDAState, codecs);
344     hwaddr addr;
345     uint32_t wp, ex;
346 
347     if (d->ics & ICH6_IRS_BUSY) {
348         dprint(d, 2, "%s: [irr] response 0x%x, cad 0x%x\n",
349                __func__, response, dev->cad);
350         d->irr = response;
351         d->ics &= ~(ICH6_IRS_BUSY | 0xf0);
352         d->ics |= (ICH6_IRS_VALID | (dev->cad << 4));
353         return;
354     }
355 
356     if (!(d->rirb_ctl & ICH6_RBCTL_DMA_EN)) {
357         dprint(d, 1, "%s: rirb dma disabled, drop codec response\n", __func__);
358         return;
359     }
360 
361     ex = (solicited ? 0 : (1 << 4)) | dev->cad;
362     wp = (d->rirb_wp + 1) & 0xff;
363     addr = intel_hda_addr(d->rirb_lbase, d->rirb_ubase);
364     stl_le_pci_dma(&d->pci, addr + 8*wp, response);
365     stl_le_pci_dma(&d->pci, addr + 8*wp + 4, ex);
366     d->rirb_wp = wp;
367 
368     dprint(d, 2, "%s: [wp 0x%x] response 0x%x, extra 0x%x\n",
369            __func__, wp, response, ex);
370 
371     d->rirb_count++;
372     if (d->rirb_count == d->rirb_cnt) {
373         dprint(d, 2, "%s: rirb count reached (%d)\n", __func__, d->rirb_count);
374         if (d->rirb_ctl & ICH6_RBCTL_IRQ_EN) {
375             d->rirb_sts |= ICH6_RBSTS_IRQ;
376             intel_hda_update_irq(d);
377         }
378     } else if ((d->corb_rp & 0xff) == d->corb_wp) {
379         dprint(d, 2, "%s: corb ring empty (%d/%d)\n", __func__,
380                d->rirb_count, d->rirb_cnt);
381         if (d->rirb_ctl & ICH6_RBCTL_IRQ_EN) {
382             d->rirb_sts |= ICH6_RBSTS_IRQ;
383             intel_hda_update_irq(d);
384         }
385     }
386 }
387 
388 static bool intel_hda_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
389                            uint8_t *buf, uint32_t len)
390 {
391     HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus);
392     IntelHDAState *d = container_of(bus, IntelHDAState, codecs);
393     hwaddr addr;
394     uint32_t s, copy, left;
395     IntelHDAStream *st;
396     bool irq = false;
397 
398     st = output ? d->st + 4 : d->st;
399     for (s = 0; s < 4; s++) {
400         if (stnr == ((st[s].ctl >> 20) & 0x0f)) {
401             st = st + s;
402             break;
403         }
404     }
405     if (s == 4) {
406         return false;
407     }
408     if (st->bpl == NULL) {
409         return false;
410     }
411 
412     left = len;
413     s = st->bentries;
414     while (left > 0 && s-- > 0) {
415         copy = left;
416         if (copy > st->bsize - st->lpib)
417             copy = st->bsize - st->lpib;
418         if (copy > st->bpl[st->be].len - st->bp)
419             copy = st->bpl[st->be].len - st->bp;
420 
421         dprint(d, 3, "dma: entry %d, pos %d/%d, copy %d\n",
422                st->be, st->bp, st->bpl[st->be].len, copy);
423 
424         pci_dma_rw(&d->pci, st->bpl[st->be].addr + st->bp, buf, copy, !output);
425         st->lpib += copy;
426         st->bp += copy;
427         buf += copy;
428         left -= copy;
429 
430         if (st->bpl[st->be].len == st->bp) {
431             /* bpl entry filled */
432             if (st->bpl[st->be].flags & 0x01) {
433                 irq = true;
434             }
435             st->bp = 0;
436             st->be++;
437             if (st->be == st->bentries) {
438                 /* bpl wrap around */
439                 st->be = 0;
440                 st->lpib = 0;
441             }
442         }
443     }
444     if (d->dp_lbase & 0x01) {
445         s = st - d->st;
446         addr = intel_hda_addr(d->dp_lbase & ~0x01, d->dp_ubase);
447         stl_le_pci_dma(&d->pci, addr + 8*s, st->lpib);
448     }
449     dprint(d, 3, "dma: --\n");
450 
451     if (irq) {
452         st->ctl |= (1 << 26); /* buffer completion interrupt */
453         intel_hda_update_irq(d);
454     }
455     return true;
456 }
457 
458 static void intel_hda_parse_bdl(IntelHDAState *d, IntelHDAStream *st)
459 {
460     hwaddr addr;
461     uint8_t buf[16];
462     uint32_t i;
463 
464     addr = intel_hda_addr(st->bdlp_lbase, st->bdlp_ubase);
465     st->bentries = st->lvi +1;
466     g_free(st->bpl);
467     st->bpl = g_malloc(sizeof(bpl) * st->bentries);
468     for (i = 0; i < st->bentries; i++, addr += 16) {
469         pci_dma_read(&d->pci, addr, buf, 16);
470         st->bpl[i].addr  = le64_to_cpu(*(uint64_t *)buf);
471         st->bpl[i].len   = le32_to_cpu(*(uint32_t *)(buf + 8));
472         st->bpl[i].flags = le32_to_cpu(*(uint32_t *)(buf + 12));
473         dprint(d, 1, "bdl/%d: 0x%" PRIx64 " +0x%x, 0x%x\n",
474                i, st->bpl[i].addr, st->bpl[i].len, st->bpl[i].flags);
475     }
476 
477     st->bsize = st->cbl;
478     st->lpib  = 0;
479     st->be    = 0;
480     st->bp    = 0;
481 }
482 
483 static void intel_hda_notify_codecs(IntelHDAState *d, uint32_t stream, bool running, bool output)
484 {
485     BusChild *kid;
486     HDACodecDevice *cdev;
487 
488     QTAILQ_FOREACH(kid, &d->codecs.qbus.children, sibling) {
489         DeviceState *qdev = kid->child;
490         HDACodecDeviceClass *cdc;
491 
492         cdev = HDA_CODEC_DEVICE(qdev);
493         cdc = HDA_CODEC_DEVICE_GET_CLASS(cdev);
494         if (cdc->stream) {
495             cdc->stream(cdev, stream, running, output);
496         }
497     }
498 }
499 
500 /* --------------------------------------------------------------------- */
501 
502 static void intel_hda_set_g_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
503 {
504     if ((d->g_ctl & ICH6_GCTL_RESET) == 0) {
505         intel_hda_reset(DEVICE(d));
506     }
507 }
508 
509 static void intel_hda_set_wake_en(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
510 {
511     intel_hda_update_irq(d);
512 }
513 
514 static void intel_hda_set_state_sts(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
515 {
516     intel_hda_update_irq(d);
517 }
518 
519 static void intel_hda_set_int_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
520 {
521     intel_hda_update_irq(d);
522 }
523 
524 static void intel_hda_get_wall_clk(IntelHDAState *d, const IntelHDAReg *reg)
525 {
526     int64_t ns;
527 
528     ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - d->wall_base_ns;
529     d->wall_clk = (uint32_t)(ns * 24 / 1000);  /* 24 MHz */
530 }
531 
532 static void intel_hda_set_corb_wp(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
533 {
534     intel_hda_corb_run(d);
535 }
536 
537 static void intel_hda_set_corb_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
538 {
539     intel_hda_corb_run(d);
540 }
541 
542 static void intel_hda_set_rirb_wp(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
543 {
544     if (d->rirb_wp & ICH6_RIRBWP_RST) {
545         d->rirb_wp = 0;
546     }
547 }
548 
549 static void intel_hda_set_rirb_sts(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
550 {
551     intel_hda_update_irq(d);
552 
553     if ((old & ICH6_RBSTS_IRQ) && !(d->rirb_sts & ICH6_RBSTS_IRQ)) {
554         /* cleared ICH6_RBSTS_IRQ */
555         d->rirb_count = 0;
556         intel_hda_corb_run(d);
557     }
558 }
559 
560 static void intel_hda_set_ics(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
561 {
562     if (d->ics & ICH6_IRS_BUSY) {
563         intel_hda_corb_run(d);
564     }
565 }
566 
567 static void intel_hda_set_st_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
568 {
569     bool output = reg->stream >= 4;
570     IntelHDAStream *st = d->st + reg->stream;
571 
572     if (st->ctl & 0x01) {
573         /* reset */
574         dprint(d, 1, "st #%d: reset\n", reg->stream);
575         st->ctl = SD_STS_FIFO_READY << 24;
576     }
577     if ((st->ctl & 0x02) != (old & 0x02)) {
578         uint32_t stnr = (st->ctl >> 20) & 0x0f;
579         /* run bit flipped */
580         if (st->ctl & 0x02) {
581             /* start */
582             dprint(d, 1, "st #%d: start %d (ring buf %d bytes)\n",
583                    reg->stream, stnr, st->cbl);
584             intel_hda_parse_bdl(d, st);
585             intel_hda_notify_codecs(d, stnr, true, output);
586         } else {
587             /* stop */
588             dprint(d, 1, "st #%d: stop %d\n", reg->stream, stnr);
589             intel_hda_notify_codecs(d, stnr, false, output);
590         }
591     }
592     intel_hda_update_irq(d);
593 }
594 
595 /* --------------------------------------------------------------------- */
596 
597 #define ST_REG(_n, _o) (0x80 + (_n) * 0x20 + (_o))
598 
599 static const struct IntelHDAReg regtab[] = {
600     /* global */
601     [ ICH6_REG_GCAP ] = {
602         .name     = "GCAP",
603         .size     = 2,
604         .reset    = 0x4401,
605     },
606     [ ICH6_REG_VMIN ] = {
607         .name     = "VMIN",
608         .size     = 1,
609     },
610     [ ICH6_REG_VMAJ ] = {
611         .name     = "VMAJ",
612         .size     = 1,
613         .reset    = 1,
614     },
615     [ ICH6_REG_OUTPAY ] = {
616         .name     = "OUTPAY",
617         .size     = 2,
618         .reset    = 0x3c,
619     },
620     [ ICH6_REG_INPAY ] = {
621         .name     = "INPAY",
622         .size     = 2,
623         .reset    = 0x1d,
624     },
625     [ ICH6_REG_GCTL ] = {
626         .name     = "GCTL",
627         .size     = 4,
628         .wmask    = 0x0103,
629         .offset   = offsetof(IntelHDAState, g_ctl),
630         .whandler = intel_hda_set_g_ctl,
631     },
632     [ ICH6_REG_WAKEEN ] = {
633         .name     = "WAKEEN",
634         .size     = 2,
635         .wmask    = 0x7fff,
636         .offset   = offsetof(IntelHDAState, wake_en),
637         .whandler = intel_hda_set_wake_en,
638     },
639     [ ICH6_REG_STATESTS ] = {
640         .name     = "STATESTS",
641         .size     = 2,
642         .wmask    = 0x7fff,
643         .wclear   = 0x7fff,
644         .offset   = offsetof(IntelHDAState, state_sts),
645         .whandler = intel_hda_set_state_sts,
646     },
647 
648     /* interrupts */
649     [ ICH6_REG_INTCTL ] = {
650         .name     = "INTCTL",
651         .size     = 4,
652         .wmask    = 0xc00000ff,
653         .offset   = offsetof(IntelHDAState, int_ctl),
654         .whandler = intel_hda_set_int_ctl,
655     },
656     [ ICH6_REG_INTSTS ] = {
657         .name     = "INTSTS",
658         .size     = 4,
659         .wmask    = 0xc00000ff,
660         .wclear   = 0xc00000ff,
661         .offset   = offsetof(IntelHDAState, int_sts),
662     },
663 
664     /* misc */
665     [ ICH6_REG_WALLCLK ] = {
666         .name     = "WALLCLK",
667         .size     = 4,
668         .offset   = offsetof(IntelHDAState, wall_clk),
669         .rhandler = intel_hda_get_wall_clk,
670     },
671     [ ICH6_REG_WALLCLK + 0x2000 ] = {
672         .name     = "WALLCLK(alias)",
673         .size     = 4,
674         .offset   = offsetof(IntelHDAState, wall_clk),
675         .rhandler = intel_hda_get_wall_clk,
676     },
677 
678     /* dma engine */
679     [ ICH6_REG_CORBLBASE ] = {
680         .name     = "CORBLBASE",
681         .size     = 4,
682         .wmask    = 0xffffff80,
683         .offset   = offsetof(IntelHDAState, corb_lbase),
684     },
685     [ ICH6_REG_CORBUBASE ] = {
686         .name     = "CORBUBASE",
687         .size     = 4,
688         .wmask    = 0xffffffff,
689         .offset   = offsetof(IntelHDAState, corb_ubase),
690     },
691     [ ICH6_REG_CORBWP ] = {
692         .name     = "CORBWP",
693         .size     = 2,
694         .wmask    = 0xff,
695         .offset   = offsetof(IntelHDAState, corb_wp),
696         .whandler = intel_hda_set_corb_wp,
697     },
698     [ ICH6_REG_CORBRP ] = {
699         .name     = "CORBRP",
700         .size     = 2,
701         .wmask    = 0x80ff,
702         .offset   = offsetof(IntelHDAState, corb_rp),
703     },
704     [ ICH6_REG_CORBCTL ] = {
705         .name     = "CORBCTL",
706         .size     = 1,
707         .wmask    = 0x03,
708         .offset   = offsetof(IntelHDAState, corb_ctl),
709         .whandler = intel_hda_set_corb_ctl,
710     },
711     [ ICH6_REG_CORBSTS ] = {
712         .name     = "CORBSTS",
713         .size     = 1,
714         .wmask    = 0x01,
715         .wclear   = 0x01,
716         .offset   = offsetof(IntelHDAState, corb_sts),
717     },
718     [ ICH6_REG_CORBSIZE ] = {
719         .name     = "CORBSIZE",
720         .size     = 1,
721         .reset    = 0x42,
722         .offset   = offsetof(IntelHDAState, corb_size),
723     },
724     [ ICH6_REG_RIRBLBASE ] = {
725         .name     = "RIRBLBASE",
726         .size     = 4,
727         .wmask    = 0xffffff80,
728         .offset   = offsetof(IntelHDAState, rirb_lbase),
729     },
730     [ ICH6_REG_RIRBUBASE ] = {
731         .name     = "RIRBUBASE",
732         .size     = 4,
733         .wmask    = 0xffffffff,
734         .offset   = offsetof(IntelHDAState, rirb_ubase),
735     },
736     [ ICH6_REG_RIRBWP ] = {
737         .name     = "RIRBWP",
738         .size     = 2,
739         .wmask    = 0x8000,
740         .offset   = offsetof(IntelHDAState, rirb_wp),
741         .whandler = intel_hda_set_rirb_wp,
742     },
743     [ ICH6_REG_RINTCNT ] = {
744         .name     = "RINTCNT",
745         .size     = 2,
746         .wmask    = 0xff,
747         .offset   = offsetof(IntelHDAState, rirb_cnt),
748     },
749     [ ICH6_REG_RIRBCTL ] = {
750         .name     = "RIRBCTL",
751         .size     = 1,
752         .wmask    = 0x07,
753         .offset   = offsetof(IntelHDAState, rirb_ctl),
754     },
755     [ ICH6_REG_RIRBSTS ] = {
756         .name     = "RIRBSTS",
757         .size     = 1,
758         .wmask    = 0x05,
759         .wclear   = 0x05,
760         .offset   = offsetof(IntelHDAState, rirb_sts),
761         .whandler = intel_hda_set_rirb_sts,
762     },
763     [ ICH6_REG_RIRBSIZE ] = {
764         .name     = "RIRBSIZE",
765         .size     = 1,
766         .reset    = 0x42,
767         .offset   = offsetof(IntelHDAState, rirb_size),
768     },
769 
770     [ ICH6_REG_DPLBASE ] = {
771         .name     = "DPLBASE",
772         .size     = 4,
773         .wmask    = 0xffffff81,
774         .offset   = offsetof(IntelHDAState, dp_lbase),
775     },
776     [ ICH6_REG_DPUBASE ] = {
777         .name     = "DPUBASE",
778         .size     = 4,
779         .wmask    = 0xffffffff,
780         .offset   = offsetof(IntelHDAState, dp_ubase),
781     },
782 
783     [ ICH6_REG_IC ] = {
784         .name     = "ICW",
785         .size     = 4,
786         .wmask    = 0xffffffff,
787         .offset   = offsetof(IntelHDAState, icw),
788     },
789     [ ICH6_REG_IR ] = {
790         .name     = "IRR",
791         .size     = 4,
792         .offset   = offsetof(IntelHDAState, irr),
793     },
794     [ ICH6_REG_IRS ] = {
795         .name     = "ICS",
796         .size     = 2,
797         .wmask    = 0x0003,
798         .wclear   = 0x0002,
799         .offset   = offsetof(IntelHDAState, ics),
800         .whandler = intel_hda_set_ics,
801     },
802 
803 #define HDA_STREAM(_t, _i)                                            \
804     [ ST_REG(_i, ICH6_REG_SD_CTL) ] = {                               \
805         .stream   = _i,                                               \
806         .name     = _t stringify(_i) " CTL",                          \
807         .size     = 4,                                                \
808         .wmask    = 0x1cff001f,                                       \
809         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
810         .whandler = intel_hda_set_st_ctl,                             \
811     },                                                                \
812     [ ST_REG(_i, ICH6_REG_SD_CTL) + 2] = {                            \
813         .stream   = _i,                                               \
814         .name     = _t stringify(_i) " CTL(stnr)",                    \
815         .size     = 1,                                                \
816         .shift    = 16,                                               \
817         .wmask    = 0x00ff0000,                                       \
818         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
819         .whandler = intel_hda_set_st_ctl,                             \
820     },                                                                \
821     [ ST_REG(_i, ICH6_REG_SD_STS)] = {                                \
822         .stream   = _i,                                               \
823         .name     = _t stringify(_i) " CTL(sts)",                     \
824         .size     = 1,                                                \
825         .shift    = 24,                                               \
826         .wmask    = 0x1c000000,                                       \
827         .wclear   = 0x1c000000,                                       \
828         .offset   = offsetof(IntelHDAState, st[_i].ctl),              \
829         .whandler = intel_hda_set_st_ctl,                             \
830         .reset    = SD_STS_FIFO_READY << 24                           \
831     },                                                                \
832     [ ST_REG(_i, ICH6_REG_SD_LPIB) ] = {                              \
833         .stream   = _i,                                               \
834         .name     = _t stringify(_i) " LPIB",                         \
835         .size     = 4,                                                \
836         .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
837     },                                                                \
838     [ ST_REG(_i, ICH6_REG_SD_LPIB) + 0x2000 ] = {                     \
839         .stream   = _i,                                               \
840         .name     = _t stringify(_i) " LPIB(alias)",                  \
841         .size     = 4,                                                \
842         .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
843     },                                                                \
844     [ ST_REG(_i, ICH6_REG_SD_CBL) ] = {                               \
845         .stream   = _i,                                               \
846         .name     = _t stringify(_i) " CBL",                          \
847         .size     = 4,                                                \
848         .wmask    = 0xffffffff,                                       \
849         .offset   = offsetof(IntelHDAState, st[_i].cbl),              \
850     },                                                                \
851     [ ST_REG(_i, ICH6_REG_SD_LVI) ] = {                               \
852         .stream   = _i,                                               \
853         .name     = _t stringify(_i) " LVI",                          \
854         .size     = 2,                                                \
855         .wmask    = 0x00ff,                                           \
856         .offset   = offsetof(IntelHDAState, st[_i].lvi),              \
857     },                                                                \
858     [ ST_REG(_i, ICH6_REG_SD_FIFOSIZE) ] = {                          \
859         .stream   = _i,                                               \
860         .name     = _t stringify(_i) " FIFOS",                        \
861         .size     = 2,                                                \
862         .reset    = HDA_BUFFER_SIZE,                                  \
863     },                                                                \
864     [ ST_REG(_i, ICH6_REG_SD_FORMAT) ] = {                            \
865         .stream   = _i,                                               \
866         .name     = _t stringify(_i) " FMT",                          \
867         .size     = 2,                                                \
868         .wmask    = 0x7f7f,                                           \
869         .offset   = offsetof(IntelHDAState, st[_i].fmt),              \
870     },                                                                \
871     [ ST_REG(_i, ICH6_REG_SD_BDLPL) ] = {                             \
872         .stream   = _i,                                               \
873         .name     = _t stringify(_i) " BDLPL",                        \
874         .size     = 4,                                                \
875         .wmask    = 0xffffff80,                                       \
876         .offset   = offsetof(IntelHDAState, st[_i].bdlp_lbase),       \
877     },                                                                \
878     [ ST_REG(_i, ICH6_REG_SD_BDLPU) ] = {                             \
879         .stream   = _i,                                               \
880         .name     = _t stringify(_i) " BDLPU",                        \
881         .size     = 4,                                                \
882         .wmask    = 0xffffffff,                                       \
883         .offset   = offsetof(IntelHDAState, st[_i].bdlp_ubase),       \
884     },                                                                \
885 
886     HDA_STREAM("IN", 0)
887     HDA_STREAM("IN", 1)
888     HDA_STREAM("IN", 2)
889     HDA_STREAM("IN", 3)
890 
891     HDA_STREAM("OUT", 4)
892     HDA_STREAM("OUT", 5)
893     HDA_STREAM("OUT", 6)
894     HDA_STREAM("OUT", 7)
895 
896 };
897 
898 static const IntelHDAReg *intel_hda_reg_find(IntelHDAState *d, hwaddr addr)
899 {
900     const IntelHDAReg *reg;
901 
902     if (addr >= ARRAY_SIZE(regtab)) {
903         goto noreg;
904     }
905     reg = regtab+addr;
906     if (reg->name == NULL) {
907         goto noreg;
908     }
909     return reg;
910 
911 noreg:
912     dprint(d, 1, "unknown register, addr 0x%x\n", (int) addr);
913     return NULL;
914 }
915 
916 static uint32_t *intel_hda_reg_addr(IntelHDAState *d, const IntelHDAReg *reg)
917 {
918     uint8_t *addr = (void*)d;
919 
920     addr += reg->offset;
921     return (uint32_t*)addr;
922 }
923 
924 static void intel_hda_reg_write(IntelHDAState *d, const IntelHDAReg *reg, uint32_t val,
925                                 uint32_t wmask)
926 {
927     uint32_t *addr;
928     uint32_t old;
929 
930     if (!reg) {
931         return;
932     }
933     if (!reg->wmask) {
934         qemu_log_mask(LOG_GUEST_ERROR, "intel-hda: write to r/o reg %s\n",
935                       reg->name);
936         return;
937     }
938 
939     if (d->debug) {
940         time_t now = time(NULL);
941         if (d->last_write && d->last_reg == reg && d->last_val == val) {
942             d->repeat_count++;
943             if (d->last_sec != now) {
944                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
945                 d->last_sec = now;
946                 d->repeat_count = 0;
947             }
948         } else {
949             if (d->repeat_count) {
950                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
951             }
952             dprint(d, 2, "write %-16s: 0x%x (%x)\n", reg->name, val, wmask);
953             d->last_write = 1;
954             d->last_reg   = reg;
955             d->last_val   = val;
956             d->last_sec   = now;
957             d->repeat_count = 0;
958         }
959     }
960     assert(reg->offset != 0);
961 
962     addr = intel_hda_reg_addr(d, reg);
963     old = *addr;
964 
965     if (reg->shift) {
966         val <<= reg->shift;
967         wmask <<= reg->shift;
968     }
969     wmask &= reg->wmask;
970     *addr &= ~wmask;
971     *addr |= wmask & val;
972     *addr &= ~(val & reg->wclear);
973 
974     if (reg->whandler) {
975         reg->whandler(d, reg, old);
976     }
977 }
978 
979 static uint32_t intel_hda_reg_read(IntelHDAState *d, const IntelHDAReg *reg,
980                                    uint32_t rmask)
981 {
982     uint32_t *addr, ret;
983 
984     if (!reg) {
985         return 0;
986     }
987 
988     if (reg->rhandler) {
989         reg->rhandler(d, reg);
990     }
991 
992     if (reg->offset == 0) {
993         /* constant read-only register */
994         ret = reg->reset;
995     } else {
996         addr = intel_hda_reg_addr(d, reg);
997         ret = *addr;
998         if (reg->shift) {
999             ret >>= reg->shift;
1000         }
1001         ret &= rmask;
1002     }
1003     if (d->debug) {
1004         time_t now = time(NULL);
1005         if (!d->last_write && d->last_reg == reg && d->last_val == ret) {
1006             d->repeat_count++;
1007             if (d->last_sec != now) {
1008                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
1009                 d->last_sec = now;
1010                 d->repeat_count = 0;
1011             }
1012         } else {
1013             if (d->repeat_count) {
1014                 dprint(d, 2, "previous register op repeated %d times\n", d->repeat_count);
1015             }
1016             dprint(d, 2, "read  %-16s: 0x%x (%x)\n", reg->name, ret, rmask);
1017             d->last_write = 0;
1018             d->last_reg   = reg;
1019             d->last_val   = ret;
1020             d->last_sec   = now;
1021             d->repeat_count = 0;
1022         }
1023     }
1024     return ret;
1025 }
1026 
1027 static void intel_hda_regs_reset(IntelHDAState *d)
1028 {
1029     uint32_t *addr;
1030     int i;
1031 
1032     for (i = 0; i < ARRAY_SIZE(regtab); i++) {
1033         if (regtab[i].name == NULL) {
1034             continue;
1035         }
1036         if (regtab[i].offset == 0) {
1037             continue;
1038         }
1039         addr = intel_hda_reg_addr(d, regtab + i);
1040         *addr = regtab[i].reset;
1041     }
1042 }
1043 
1044 /* --------------------------------------------------------------------- */
1045 
1046 static void intel_hda_mmio_write(void *opaque, hwaddr addr, uint64_t val,
1047                                  unsigned size)
1048 {
1049     IntelHDAState *d = opaque;
1050     const IntelHDAReg *reg = intel_hda_reg_find(d, addr);
1051 
1052     intel_hda_reg_write(d, reg, val, MAKE_64BIT_MASK(0, size * 8));
1053 }
1054 
1055 static uint64_t intel_hda_mmio_read(void *opaque, hwaddr addr, unsigned size)
1056 {
1057     IntelHDAState *d = opaque;
1058     const IntelHDAReg *reg = intel_hda_reg_find(d, addr);
1059 
1060     return intel_hda_reg_read(d, reg, MAKE_64BIT_MASK(0, size * 8));
1061 }
1062 
1063 static const MemoryRegionOps intel_hda_mmio_ops = {
1064     .read = intel_hda_mmio_read,
1065     .write = intel_hda_mmio_write,
1066     .impl = {
1067         .min_access_size = 1,
1068         .max_access_size = 4,
1069     },
1070     .endianness = DEVICE_NATIVE_ENDIAN,
1071 };
1072 
1073 /* --------------------------------------------------------------------- */
1074 
1075 static void intel_hda_reset(DeviceState *dev)
1076 {
1077     BusChild *kid;
1078     IntelHDAState *d = INTEL_HDA(dev);
1079     HDACodecDevice *cdev;
1080 
1081     intel_hda_regs_reset(d);
1082     d->wall_base_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1083 
1084     /* reset codecs */
1085     QTAILQ_FOREACH(kid, &d->codecs.qbus.children, sibling) {
1086         DeviceState *qdev = kid->child;
1087         cdev = HDA_CODEC_DEVICE(qdev);
1088         device_reset(DEVICE(cdev));
1089         d->state_sts |= (1 << cdev->cad);
1090     }
1091     intel_hda_update_irq(d);
1092 }
1093 
1094 static void intel_hda_realize(PCIDevice *pci, Error **errp)
1095 {
1096     IntelHDAState *d = INTEL_HDA(pci);
1097     uint8_t *conf = d->pci.config;
1098     Error *err = NULL;
1099     int ret;
1100 
1101     d->name = object_get_typename(OBJECT(d));
1102 
1103     pci_config_set_interrupt_pin(conf, 1);
1104 
1105     /* HDCTL off 0x40 bit 0 selects signaling mode (1-HDA, 0 - Ac97) 18.1.19 */
1106     conf[0x40] = 0x01;
1107 
1108     if (d->msi != ON_OFF_AUTO_OFF) {
1109         ret = msi_init(&d->pci, d->old_msi_addr ? 0x50 : 0x60,
1110                        1, true, false, &err);
1111         /* Any error other than -ENOTSUP(board's MSI support is broken)
1112          * is a programming error */
1113         assert(!ret || ret == -ENOTSUP);
1114         if (ret && d->msi == ON_OFF_AUTO_ON) {
1115             /* Can't satisfy user's explicit msi=on request, fail */
1116             error_append_hint(&err, "You have to use msi=auto (default) or "
1117                     "msi=off with this machine type.\n");
1118             error_propagate(errp, err);
1119             return;
1120         }
1121         assert(!err || d->msi == ON_OFF_AUTO_AUTO);
1122         /* With msi=auto, we fall back to MSI off silently */
1123         error_free(err);
1124     }
1125 
1126     memory_region_init_io(&d->mmio, OBJECT(d), &intel_hda_mmio_ops, d,
1127                           "intel-hda", 0x4000);
1128     pci_register_bar(&d->pci, 0, 0, &d->mmio);
1129 
1130     hda_codec_bus_init(DEVICE(pci), &d->codecs, sizeof(d->codecs),
1131                        intel_hda_response, intel_hda_xfer);
1132 }
1133 
1134 static void intel_hda_exit(PCIDevice *pci)
1135 {
1136     IntelHDAState *d = INTEL_HDA(pci);
1137 
1138     msi_uninit(&d->pci);
1139 }
1140 
1141 static int intel_hda_post_load(void *opaque, int version)
1142 {
1143     IntelHDAState* d = opaque;
1144     int i;
1145 
1146     dprint(d, 1, "%s\n", __func__);
1147     for (i = 0; i < ARRAY_SIZE(d->st); i++) {
1148         if (d->st[i].ctl & 0x02) {
1149             intel_hda_parse_bdl(d, &d->st[i]);
1150         }
1151     }
1152     intel_hda_update_irq(d);
1153     return 0;
1154 }
1155 
1156 static const VMStateDescription vmstate_intel_hda_stream = {
1157     .name = "intel-hda-stream",
1158     .version_id = 1,
1159     .fields = (VMStateField[]) {
1160         VMSTATE_UINT32(ctl, IntelHDAStream),
1161         VMSTATE_UINT32(lpib, IntelHDAStream),
1162         VMSTATE_UINT32(cbl, IntelHDAStream),
1163         VMSTATE_UINT32(lvi, IntelHDAStream),
1164         VMSTATE_UINT32(fmt, IntelHDAStream),
1165         VMSTATE_UINT32(bdlp_lbase, IntelHDAStream),
1166         VMSTATE_UINT32(bdlp_ubase, IntelHDAStream),
1167         VMSTATE_END_OF_LIST()
1168     }
1169 };
1170 
1171 static const VMStateDescription vmstate_intel_hda = {
1172     .name = "intel-hda",
1173     .version_id = 1,
1174     .post_load = intel_hda_post_load,
1175     .fields = (VMStateField[]) {
1176         VMSTATE_PCI_DEVICE(pci, IntelHDAState),
1177 
1178         /* registers */
1179         VMSTATE_UINT32(g_ctl, IntelHDAState),
1180         VMSTATE_UINT32(wake_en, IntelHDAState),
1181         VMSTATE_UINT32(state_sts, IntelHDAState),
1182         VMSTATE_UINT32(int_ctl, IntelHDAState),
1183         VMSTATE_UINT32(int_sts, IntelHDAState),
1184         VMSTATE_UINT32(wall_clk, IntelHDAState),
1185         VMSTATE_UINT32(corb_lbase, IntelHDAState),
1186         VMSTATE_UINT32(corb_ubase, IntelHDAState),
1187         VMSTATE_UINT32(corb_rp, IntelHDAState),
1188         VMSTATE_UINT32(corb_wp, IntelHDAState),
1189         VMSTATE_UINT32(corb_ctl, IntelHDAState),
1190         VMSTATE_UINT32(corb_sts, IntelHDAState),
1191         VMSTATE_UINT32(corb_size, IntelHDAState),
1192         VMSTATE_UINT32(rirb_lbase, IntelHDAState),
1193         VMSTATE_UINT32(rirb_ubase, IntelHDAState),
1194         VMSTATE_UINT32(rirb_wp, IntelHDAState),
1195         VMSTATE_UINT32(rirb_cnt, IntelHDAState),
1196         VMSTATE_UINT32(rirb_ctl, IntelHDAState),
1197         VMSTATE_UINT32(rirb_sts, IntelHDAState),
1198         VMSTATE_UINT32(rirb_size, IntelHDAState),
1199         VMSTATE_UINT32(dp_lbase, IntelHDAState),
1200         VMSTATE_UINT32(dp_ubase, IntelHDAState),
1201         VMSTATE_UINT32(icw, IntelHDAState),
1202         VMSTATE_UINT32(irr, IntelHDAState),
1203         VMSTATE_UINT32(ics, IntelHDAState),
1204         VMSTATE_STRUCT_ARRAY(st, IntelHDAState, 8, 0,
1205                              vmstate_intel_hda_stream,
1206                              IntelHDAStream),
1207 
1208         /* additional state info */
1209         VMSTATE_UINT32(rirb_count, IntelHDAState),
1210         VMSTATE_INT64(wall_base_ns, IntelHDAState),
1211 
1212         VMSTATE_END_OF_LIST()
1213     }
1214 };
1215 
1216 static Property intel_hda_properties[] = {
1217     DEFINE_PROP_UINT32("debug", IntelHDAState, debug, 0),
1218     DEFINE_PROP_ON_OFF_AUTO("msi", IntelHDAState, msi, ON_OFF_AUTO_AUTO),
1219     DEFINE_PROP_BOOL("old_msi_addr", IntelHDAState, old_msi_addr, false),
1220     DEFINE_PROP_END_OF_LIST(),
1221 };
1222 
1223 static void intel_hda_class_init(ObjectClass *klass, void *data)
1224 {
1225     DeviceClass *dc = DEVICE_CLASS(klass);
1226     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1227 
1228     k->realize = intel_hda_realize;
1229     k->exit = intel_hda_exit;
1230     k->vendor_id = PCI_VENDOR_ID_INTEL;
1231     k->class_id = PCI_CLASS_MULTIMEDIA_HD_AUDIO;
1232     dc->reset = intel_hda_reset;
1233     dc->vmsd = &vmstate_intel_hda;
1234     dc->props = intel_hda_properties;
1235 }
1236 
1237 static void intel_hda_class_init_ich6(ObjectClass *klass, void *data)
1238 {
1239     DeviceClass *dc = DEVICE_CLASS(klass);
1240     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1241 
1242     k->device_id = 0x2668;
1243     k->revision = 1;
1244     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1245     dc->desc = "Intel HD Audio Controller (ich6)";
1246 }
1247 
1248 static void intel_hda_class_init_ich9(ObjectClass *klass, void *data)
1249 {
1250     DeviceClass *dc = DEVICE_CLASS(klass);
1251     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1252 
1253     k->device_id = 0x293e;
1254     k->revision = 3;
1255     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1256     dc->desc = "Intel HD Audio Controller (ich9)";
1257 }
1258 
1259 static const TypeInfo intel_hda_info = {
1260     .name          = TYPE_INTEL_HDA_GENERIC,
1261     .parent        = TYPE_PCI_DEVICE,
1262     .instance_size = sizeof(IntelHDAState),
1263     .class_init    = intel_hda_class_init,
1264     .abstract      = true,
1265     .interfaces = (InterfaceInfo[]) {
1266         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
1267         { },
1268     },
1269 };
1270 
1271 static const TypeInfo intel_hda_info_ich6 = {
1272     .name          = "intel-hda",
1273     .parent        = TYPE_INTEL_HDA_GENERIC,
1274     .class_init    = intel_hda_class_init_ich6,
1275 };
1276 
1277 static const TypeInfo intel_hda_info_ich9 = {
1278     .name          = "ich9-intel-hda",
1279     .parent        = TYPE_INTEL_HDA_GENERIC,
1280     .class_init    = intel_hda_class_init_ich9,
1281 };
1282 
1283 static void hda_codec_device_class_init(ObjectClass *klass, void *data)
1284 {
1285     DeviceClass *k = DEVICE_CLASS(klass);
1286     k->realize = hda_codec_dev_realize;
1287     k->unrealize = hda_codec_dev_unrealize;
1288     set_bit(DEVICE_CATEGORY_SOUND, k->categories);
1289     k->bus_type = TYPE_HDA_BUS;
1290     k->props = hda_props;
1291 }
1292 
1293 static const TypeInfo hda_codec_device_type_info = {
1294     .name = TYPE_HDA_CODEC_DEVICE,
1295     .parent = TYPE_DEVICE,
1296     .instance_size = sizeof(HDACodecDevice),
1297     .abstract = true,
1298     .class_size = sizeof(HDACodecDeviceClass),
1299     .class_init = hda_codec_device_class_init,
1300 };
1301 
1302 /*
1303  * create intel hda controller with codec attached to it,
1304  * so '-soundhw hda' works.
1305  */
1306 static int intel_hda_and_codec_init(PCIBus *bus)
1307 {
1308     DeviceState *controller;
1309     BusState *hdabus;
1310     DeviceState *codec;
1311 
1312     controller = DEVICE(pci_create_simple(bus, -1, "intel-hda"));
1313     hdabus = QLIST_FIRST(&controller->child_bus);
1314     codec = qdev_create(hdabus, "hda-duplex");
1315     qdev_init_nofail(codec);
1316     return 0;
1317 }
1318 
1319 static void intel_hda_register_types(void)
1320 {
1321     type_register_static(&hda_codec_bus_info);
1322     type_register_static(&intel_hda_info);
1323     type_register_static(&intel_hda_info_ich6);
1324     type_register_static(&intel_hda_info_ich9);
1325     type_register_static(&hda_codec_device_type_info);
1326     pci_register_soundhw("hda", "Intel HD Audio", intel_hda_and_codec_init);
1327 }
1328 
1329 type_init(intel_hda_register_types)
1330